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| author | Chen Liqin <liqin.chen@sunplusct.com> | 2009-06-12 18:01:00 +0400 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2009-06-19 13:38:47 +0400 |
| commit | 6bc9a3966f0395419b09b2ec90f89f7f00341b37 (patch) | |
| tree | 9c0d9d5376020266f5602501c8376d4a4f13142d /arch/score | |
| parent | 0732f87761dbe417cb6e084b712d07e879e876ef (diff) | |
| download | linux-6bc9a3966f0395419b09b2ec90f89f7f00341b37.tar.xz | |
score: Add support for Sunplus S+core architecture
This is the complete set of new arch Score's files for linux.
Score instruction set support 16bits, 32bits and 64bits instruction,
Score SOC had been used in game machine and LCD TV.
Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/score')
126 files changed, 8566 insertions, 0 deletions
diff --git a/arch/score/Kconfig b/arch/score/Kconfig new file mode 100644 index 000000000000..55d413e6dcf2 --- /dev/null +++ b/arch/score/Kconfig @@ -0,0 +1,141 @@ +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.txt. + +mainmenu "Linux/SCORE Kernel Configuration" + +menu "Machine selection" + +choice + prompt "System type" + default MACH_SPCT6600 + +config ARCH_SCORE7 + bool "SCORE7 processor" + select SYS_SUPPORTS_32BIT_KERNEL + select CPU_SCORE7 + select GENERIC_HAS_IOMAP + +config MACH_SPCT6600 + bool "SPCT6600 series based machines" + select SYS_SUPPORTS_32BIT_KERNEL + select CPU_SCORE7 + select GENERIC_HAS_IOMAP + +config SCORE_SIM + bool "Score simulator" + select SYS_SUPPORTS_32BIT_KERNEL + select CPU_SCORE7 + select GENERIC_HAS_IOMAP +endchoice + +endmenu + +config CPU_SCORE7 + bool + +config GENERIC_IOMAP + def_bool y + +config NO_DMA + bool + default y + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config GENERIC_FIND_NEXT_BIT + def_bool y + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_CALIBRATE_DELAY + def_bool y + +config GENERIC_CLOCKEVENTS + def_bool y + +config GENERIC_TIME + def_bool y + +config SCHED_NO_NO_OMIT_FRAME_POINTER + def_bool y + +config GENERIC_HARDIRQS_NO__DO_IRQ + def_bool y + +config GENERIC_SYSCALL_TABLE + def_bool y + +config SCORE_L1_CACHE_SHIFT + int + default "4" + +menu "Kernel type" + +config 32BIT + def_bool y + +config GENERIC_HARDIRQS + def_bool y + +config ARCH_FLATMEM_ENABLE + def_bool y + +config ARCH_POPULATES_NODE_MAP + def_bool y + +source "mm/Kconfig" + +config MEMORY_START + hex + default 0xa0000000 + +source "kernel/time/Kconfig" +source "kernel/Kconfig.hz" +source "kernel/Kconfig.preempt" + +endmenu + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config LOCKDEP_SUPPORT + def_bool y + +config STACKTRACE_SUPPORT + def_bool y + +source "init/Kconfig" + +config PROBE_INITRD_HEADER + bool "Probe initrd header created by addinitrd" + depends on BLK_DEV_INITRD + help + Probe initrd header at the last page of kernel image. + Say Y here if you are using arch/score/boot/addinitrd.c to + add initrd or initramfs image to the kernel image. + Otherwise, say N. + +config MMU + def_bool y + +menu "Executable file formats" + +source "fs/Kconfig.binfmt" + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "arch/score/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" diff --git a/arch/score/Kconfig.debug b/arch/score/Kconfig.debug new file mode 100644 index 000000000000..451ed54ce646 --- /dev/null +++ b/arch/score/Kconfig.debug @@ -0,0 +1,37 @@ +menu "Kernel hacking" + +config TRACE_IRQFLAGS_SUPPORT + bool + default y + +source "lib/Kconfig.debug" + +config CMDLINE + string "Default kernel command string" + default "" + help + On some platforms, there is currently no way for the boot loader to + pass arguments to the kernel. For these platforms, you can supply + some command-line options at build time by entering them here. In + other cases you can specify kernel args so that you don't have + to set them up in board prom initialization routines. + +config DEBUG_STACK_USAGE + bool "Enable stack utilization instrumentation" + depends on DEBUG_KERNEL + help + Enables the display of the minimum amount of free stack which each + task has ever had available in the sysrq-T and sysrq-P debug output. + + This option will slow down process creation somewhat. + +config RUNTIME_DEBUG + bool "Enable run-time debugging" + depends on DEBUG_KERNEL + help + If you say Y here, some debugging macros will do run-time checking. + If you say N here, those macros will mostly turn to no-ops. See + include/asm-score/debug.h for debuging macros. + If unsure, say N. + +endmenu diff --git a/arch/score/Makefile b/arch/score/Makefile new file mode 100644 index 000000000000..68e0cd06d5c9 --- /dev/null +++ b/arch/score/Makefile @@ -0,0 +1,43 @@ +# +# arch/score/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# + +KBUILD_DEFCONFIG := spct6600_defconfig +CROSS_COMPILE := score-linux- + +# +# CPU-dependent compiler/assembler options for optimization. +# +cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \ + -D__linux__ -ffunction-sections -ffreestanding + +# +# Board-dependent options and extra files +# +KBUILD_AFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) +MODFLAGS += -mlong-calls +LDFLAGS += --oformat elf32-littlescore +LDFLAGS_vmlinux += -G0 -static -nostdlib + +head-y := arch/score/kernel/head.o +libs-y += arch/score/lib/ +core-y += arch/score/kernel/ arch/score/mm/ + +boot := arch/score/boot + +vmlinux.bin: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +archclean: + @$(MAKE) $(clean)=$(boot) + +define archhelp + echo ' vmlinux.bin - Raw binary boot image' + echo + echo ' These will be default as apropriate for a configured platform.' +endef diff --git a/arch/score/boot/Makefile b/arch/score/boot/Makefile new file mode 100644 index 000000000000..0c5fbd0fb696 --- /dev/null +++ b/arch/score/boot/Makefile @@ -0,0 +1,15 @@ +# +# arch/score/boot/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# + +targets := vmlinux.bin + +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + @echo 'Kernel: $@ is ready' ' (#'`cat .version`')' + +clean-files += vmlinux.bin diff --git a/arch/score/configs/spct6600_defconfig b/arch/score/configs/spct6600_defconfig new file mode 100644 index 000000000000..e064943b13d4 --- /dev/null +++ b/arch/score/configs/spct6600_defconfig @@ -0,0 +1,717 @@ +# +# Automatically generated make config: don't edit +# Linux kernel version: 2.6.30-rc5 +# Fri Jun 12 18:57:07 2009 +# + +# +# Machine selection +# +# CONFIG_ARCH_SCORE7 is not set +CONFIG_MACH_SPCT6600=y +# CONFIG_SCORE_SIM is not set +CONFIG_CPU_SCORE7=y +CONFIG_GENERIC_IOMAP=y +CONFIG_NO_DMA=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +CONFIG_GENERIC_FIND_NEXT_BIT=y +CONFIG_GENERIC_HWEIGHT=y +CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_GENERIC_CLOCKEVENTS=y +CONFIG_GENERIC_TIME=y +CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y +CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y +CONFIG_GENERIC_SYSCALL_TABLE=y +CONFIG_SCORE_L1_CACHE_SHIFT=4 + +# +# Kernel type +# +CONFIG_32BIT=y +CONFIG_GENERIC_HARDIRQS=y +CONFIG_ARCH_FLATMEM_ENABLE=y +CONFIG_ARCH_POPULATES_NODE_MAP=y +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +CONFIG_PAGEFLAGS_EXTENDED=y +CONFIG_SPLIT_PTLOCK_CPUS=4 +# CONFIG_PHYS_ADDR_T_64BIT is not set +CONFIG_ZONE_DMA_FLAG=0 +CONFIG_VIRT_TO_BUS=y +CONFIG_UNEVICTABLE_LRU=y +CONFIG_HAVE_MLOCK=y +CONFIG_HAVE_MLOCKED_PAGE_BIT=y +CONFIG_MEMORY_START=0xa0000000 +# CONFIG_NO_HZ is not set +# CONFIG_HIGH_RES_TIMERS is not set +CONFIG_GENERIC_CLOCKEVENTS_BUILD=y +CONFIG_HZ_100=y +# CONFIG_HZ_250 is not set +# CONFIG_HZ_300 is not set +# CONFIG_HZ_1000 is not set +CONFIG_HZ=100 +# CONFIG_SCHED_HRTICK is not set +# CONFIG_PREEMPT_NONE is not set +CONFIG_PREEMPT_VOLUNTARY=y +# CONFIG_PREEMPT is not set +CONFIG_LOCKDEP_SUPPORT=y +CONFIG_STACKTRACE_SUPPORT=y +CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" + +# +# General setup +# +CONFIG_EXPERIMENTAL=y +CONFIG_BROKEN_ON_SMP=y +CONFIG_INIT_ENV_ARG_LIMIT=32 +CONFIG_LOCALVERSION="" +# CONFIG_LOCALVERSION_AUTO is not set +CONFIG_SWAP=y +CONFIG_SYSVIPC=y +CONFIG_SYSVIPC_SYSCTL=y +CONFIG_POSIX_MQUEUE=y +CONFIG_POSIX_MQUEUE_SYSCTL=y +CONFIG_BSD_PROCESS_ACCT=y +# CONFIG_BSD_PROCESS_ACCT_V3 is not set +# CONFIG_TASKSTATS is not set +# CONFIG_AUDIT is not set + +# +# RCU Subsystem +# +CONFIG_CLASSIC_RCU=y +# CONFIG_TREE_RCU is not set +# CONFIG_PREEMPT_RCU is not set +# CONFIG_TREE_RCU_TRACE is not set +# CONFIG_PREEMPT_RCU_TRACE is not set +# CONFIG_IKCONFIG is not set +CONFIG_LOG_BUF_SHIFT=12 +# CONFIG_GROUP_SCHED is not set +# CONFIG_CGROUPS is not set +CONFIG_SYSFS_DEPRECATED=y +CONFIG_SYSFS_DEPRECATED_V2=y +# CONFIG_RELAY is not set +# CONFIG_NAMESPACES is not set +CONFIG_BLK_DEV_INITRD=y +CONFIG_INITRAMFS_SOURCE="" +CONFIG_RD_GZIP=y +# CONFIG_RD_BZIP2 is not set +# CONFIG_RD_LZMA is not set +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_SYSCTL=y +CONFIG_ANON_INODES=y +CONFIG_EMBEDDED=y +CONFIG_SYSCTL_SYSCALL=y +# CONFIG_KALLSYMS is not set +# CONFIG_STRIP_ASM_SYMS is not set +# CONFIG_HOTPLUG is not set +CONFIG_PRINTK=y +CONFIG_BUG=y +CONFIG_ELF_CORE=y +CONFIG_BASE_FULL=y +CONFIG_FUTEX=y +CONFIG_EPOLL=y +CONFIG_SIGNALFD=y +CONFIG_TIMERFD=y +CONFIG_EVENTFD=y +CONFIG_SHMEM=y +CONFIG_AIO=y +CONFIG_VM_EVENT_COUNTERS=y +CONFIG_COMPAT_BRK=y +CONFIG_SLAB=y +# CONFIG_SLUB is not set +# CONFIG_SLOB is not set +# CONFIG_PROFILING is not set +# CONFIG_MARKERS is not set +# CONFIG_SLOW_WORK is not set +# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set +CONFIG_SLABINFO=y +CONFIG_RT_MUTEXES=y +CONFIG_BASE_SMALL=0 +CONFIG_MODULES=y +CONFIG_MODULE_FORCE_LOAD=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODULE_FORCE_UNLOAD=y +# CONFIG_MODVERSIONS is not set +# CONFIG_MODULE_SRCVERSION_ALL is not set +CONFIG_BLOCK=y +CONFIG_LBD=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_BLK_DEV_INTEGRITY is not set + +# +# IO Schedulers +# +CONFIG_IOSCHED_NOOP=y +CONFIG_IOSCHED_AS=y +CONFIG_IOSCHED_DEADLINE=y +CONFIG_IOSCHED_CFQ=y +# CONFIG_DEFAULT_AS is not set +# CONFIG_DEFAULT_DEADLINE is not set +CONFIG_DEFAULT_CFQ=y +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="cfq" +# CONFIG_PROBE_INITRD_HEADER is not set +CONFIG_MMU=y + +# +# Executable file formats +# +CONFIG_BINFMT_ELF=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +# CONFIG_HAVE_AOUT is not set +CONFIG_BINFMT_MISC=y +CONFIG_NET=y + +# +# Networking options +# +# CONFIG_PACKET is not set +CONFIG_UNIX=y +CONFIG_XFRM=y +# CONFIG_XFRM_USER is not set +# CONFIG_XFRM_SUB_POLICY is not set +# CONFIG_XFRM_MIGRATE is not set +# CONFIG_XFRM_STATISTICS is not set +CONFIG_NET_KEY=y +# CONFIG_NET_KEY_MIGRATE is not set +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +# CONFIG_IP_ADVANCED_ROUTER is not set +CONFIG_IP_FIB_HASH=y +# CONFIG_IP_PNP is not set +# CONFIG_NET_IPIP is not set +# CONFIG_NET_IPGRE is not set +# CONFIG_IP_MROUTE is not set +CONFIG_ARPD=y +# CONFIG_SYN_COOKIES is not set +# CONFIG_INET_AH is not set +# CONFIG_INET_ESP is not set +# CONFIG_INET_IPCOMP is not set +# CONFIG_INET_XFRM_TUNNEL is not set +# CONFIG_INET_TUNNEL is not set +CONFIG_INET_XFRM_MODE_TRANSPORT=y +CONFIG_INET_XFRM_MODE_TUNNEL=y +CONFIG_INET_XFRM_MODE_BEET=y +# CONFIG_INET_LRO is not set +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TCP_CONG_CUBIC=y +CONFIG_DEFAULT_TCP_CONG="cubic" +# CONFIG_TCP_MD5SIG is not set +# CONFIG_IPV6 is not set +# CONFIG_NETLABEL is not set +# CONFIG_NETWORK_SECMARK is not set +# CONFIG_NETFILTER is not set +# CONFIG_IP_DCCP is not set +# CONFIG_IP_SCTP is not set +# CONFIG_TIPC is not set +# CONFIG_ATM is not set +# CONFIG_BRIDGE is not set +# CONFIG_NET_DSA is not set +# CONFIG_VLAN_8021Q is not set +# CONFIG_DECNET is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set +# CONFIG_X25 is not set +# CONFIG_LAPB is not set +# CONFIG_ECONET is not set +# CONFIG_WAN_ROUTER is not set +# CONFIG_PHONET is not set +# CONFIG_NET_SCHED is not set +# CONFIG_DCB is not set + +# +# Network testing +# +# CONFIG_NET_PKTGEN is not set +# CONFIG_HAMRADIO is not set +# CONFIG_CAN is not set +# CONFIG_IRDA is not set +# CONFIG_BT is not set +# CONFIG_AF_RXRPC is not set +# CONFIG_WIRELESS is not set +# CONFIG_WIMAX is not set +# CONFIG_RFKILL is not set +# CONFIG_NET_9P is not set + +# +# Device Drivers +# + +# +# Generic Driver Options +# +# CONFIG_STANDALONE is not set +# CONFIG_PREVENT_FIRMWARE_BUILD is not set +# CONFIG_SYS_HYPERVISOR is not set +# CONFIG_CONNECTOR is not set +# CONFIG_MTD is not set +# CONFIG_PARPORT is not set +CONFIG_BLK_DEV=y +# CONFIG_BLK_DEV_COW_COMMON is not set +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=y +# CONFIG_BLK_DEV_NBD is not set +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_COUNT=1 +CONFIG_BLK_DEV_RAM_SIZE=4096 +# CONFIG_BLK_DEV_XIP is not set +# CONFIG_CDROM_PKTCDVD is not set +# CONFIG_ATA_OVER_ETH is not set +# CONFIG_MISC_DEVICES is not set + +# +# SCSI device support +# +# CONFIG_RAID_ATTRS is not set +# CONFIG_SCSI is not set +# CONFIG_SCSI_DMA is not set +# CONFIG_SCSI_NETLINK is not set +# CONFIG_MD is not set +CONFIG_NETDEVICES=y +CONFIG_COMPAT_NET_DEV_OPS=y +# CONFIG_DUMMY is not set +# CONFIG_BONDING is not set +# CONFIG_MACVLAN is not set +# CONFIG_EQUALIZER is not set +# CONFIG_TUN is not set +# CONFIG_VETH is not set +# CONFIG_NET_ETHERNET is not set +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set + +# +# Wireless LAN +# +# CONFIG_WLAN_PRE80211 is not set +# CONFIG_WLAN_80211 is not set + +# +# Enable WiMAX (Networking options) to see the WiMAX drivers +# +# CONFIG_WAN is not set +# CONFIG_PPP is not set +# CONFIG_SLIP is not set +# CONFIG_NETCONSOLE is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set +# CONFIG_ISDN is not set +# CONFIG_PHONE is not set + +# +# Input device support +# +CONFIG_INPUT=y +# CONFIG_INPUT_FF_MEMLESS is not set +# CONFIG_INPUT_POLLDEV is not set + +# +# Userland interfaces +# +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_JOYDEV is not set +# CONFIG_INPUT_EVDEV is not set +# CONFIG_INPUT_EVBUG is not set + +# +# Input Device Drivers +# +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_TABLET is not set +# CONFIG_INPUT_TOUCHSCREEN is not set +# CONFIG_INPUT_MISC is not set + +# +# Hardware I/O ports +# +# CONFIG_SERIO is not set +# CONFIG_GAMEPORT is not set + +# +# Character devices +# +CONFIG_VT=y +CONFIG_CONSOLE_TRANSLATIONS=y +CONFIG_VT_CONSOLE=y +CONFIG_HW_CONSOLE=y +# CONFIG_VT_HW_CONSOLE_BINDING is not set +CONFIG_DEVKMEM=y +CONFIG_SERIAL_NONSTANDARD=y +# CONFIG_N_HDLC is not set +# CONFIG_RISCOM8 is not set +# CONFIG_SPECIALIX is not set +# CONFIG_RIO is not set +CONFIG_STALDRV=y + +# +# Serial drivers +# +# CONFIG_SERIAL_8250 is not set + +# +# Non-8250 serial port support +# +CONFIG_UNIX98_PTYS=y +# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set +CONFIG_LEGACY_PTYS=y +CONFIG_LEGACY_PTY_COUNT=256 +# CONFIG_IPMI_HANDLER is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_RTC is not set +# CONFIG_GEN_RTC is not set +# CONFIG_R3964 is not set +CONFIG_RAW_DRIVER=y +CONFIG_MAX_RAW_DEVS=8192 +# CONFIG_TCG_TPM is not set +# CONFIG_I2C is not set +# CONFIG_SPI is not set +# CONFIG_W1 is not set +# CONFIG_POWER_SUPPLY is not set +# CONFIG_HWMON is not set +# CONFIG_THERMAL is not set +# CONFIG_THERMAL_HWMON is not set +# CONFIG_WATCHDOG is not set + +# +# Multifunction device drivers +# +# CONFIG_MFD_CORE is not set +# CONFIG_MFD_SM501 is not set +# CONFIG_HTC_PASIC3 is not set +# CONFIG_MFD_TMIO is not set +# CONFIG_REGULATOR is not set + +# +# Multimedia devices +# + +# +# Multimedia core support +# +# CONFIG_VIDEO_DEV is not set +# CONFIG_DVB_CORE is not set +# CONFIG_VIDEO_MEDIA is not set + +# +# Multimedia drivers +# +# CONFIG_DAB is not set + +# +# Graphics support +# +# CONFIG_VGASTATE is not set +# CONFIG_VIDEO_OUTPUT_CONTROL is not set +# CONFIG_FB is not set +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set + +# +# Display device support +# +# CONFIG_DISPLAY_SUPPORT is not set + +# +# Console display driver support +# +# CONFIG_VGA_CONSOLE is not set +CONFIG_DUMMY_CONSOLE=y +# CONFIG_SOUND is not set +# CONFIG_HID_SUPPORT is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_MMC is not set +# CONFIG_MEMSTICK is not set +# CONFIG_NEW_LEDS is not set +# CONFIG_ACCESSIBILITY is not set +# CONFIG_RTC_CLASS is not set +# CONFIG_AUXDISPLAY is not set +# CONFIG_UIO is not set +# CONFIG_STAGING is not set + +# +# File systems +# +CONFIG_EXT2_FS=y +CONFIG_EXT2_FS_XATTR=y +CONFIG_EXT2_FS_POSIX_ACL=y +# CONFIG_EXT2_FS_SECURITY is not set +# CONFIG_EXT2_FS_XIP is not set +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_EXT3_FS_XATTR=y +CONFIG_EXT3_FS_POSIX_ACL=y +# CONFIG_EXT3_FS_SECURITY is not set +# CONFIG_EXT4_FS is not set +CONFIG_JBD=y +CONFIG_FS_MBCACHE=y +# CONFIG_REISERFS_FS is not set +# CONFIG_JFS_FS is not set +CONFIG_FS_POSIX_ACL=y +CONFIG_FILE_LOCKING=y +# CONFIG_XFS_FS is not set +# CONFIG_GFS2_FS is not set +# CONFIG_OCFS2_FS is not set +# CONFIG_BTRFS_FS is not set +CONFIG_DNOTIFY=y +CONFIG_INOTIFY=y +CONFIG_INOTIFY_USER=y +# CONFIG_QUOTA is not set +CONFIG_AUTOFS_FS=y +CONFIG_AUTOFS4_FS=y +# CONFIG_FUSE_FS is not set +CONFIG_GENERIC_ACL=y + +# +# Caches +# +# CONFIG_FSCACHE is not set + +# +# CD-ROM/DVD Filesystems +# +# CONFIG_ISO9660_FS is not set +# CONFIG_UDF_FS is not set + +# +# DOS/FAT/NT Filesystems +# +# CONFIG_MSDOS_FS is not set +# CONFIG_VFAT_FS is not set +# CONFIG_NTFS_FS is not set + +# +# Pseudo filesystems +# +CONFIG_PROC_FS=y +CONFIG_PROC_KCORE=y +CONFIG_PROC_SYSCTL=y +# CONFIG_PROC_PAGE_MONITOR is not set +CONFIG_SYSFS=y +CONFIG_TMPFS=y +CONFIG_TMPFS_POSIX_ACL=y +# CONFIG_HUGETLB_PAGE is not set +# CONFIG_CONFIGFS_FS is not set +CONFIG_MISC_FILESYSTEMS=y +# CONFIG_ADFS_FS is not set +# CONFIG_AFFS_FS is not set +# CONFIG_ECRYPT_FS is not set +# CONFIG_HFS_FS is not set +# CONFIG_HFSPLUS_FS is not set +# CONFIG_BEFS_FS is not set +# CONFIG_BFS_FS is not set +# CONFIG_EFS_FS is not set +# CONFIG_CRAMFS is not set +# CONFIG_SQUASHFS is not set +# CONFIG_VXFS_FS is not set +# CONFIG_MINIX_FS is not set +# CONFIG_OMFS_FS is not set +# CONFIG_HPFS_FS is not set +# CONFIG_QNX4FS_FS is not set +# CONFIG_ROMFS_FS is not set +# CONFIG_SYSV_FS is not set +# CONFIG_UFS_FS is not set +# CONFIG_NILFS2_FS is not set +CONFIG_NETWORK_FILESYSTEMS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V3=y +CONFIG_NFS_V3_ACL=y +CONFIG_NFS_V4=y +CONFIG_NFSD=y +CONFIG_NFSD_V2_ACL=y +CONFIG_NFSD_V3=y +CONFIG_NFSD_V3_ACL=y +CONFIG_NFSD_V4=y +CONFIG_LOCKD=y +CONFIG_LOCKD_V4=y +CONFIG_EXPORTFS=y +CONFIG_NFS_ACL_SUPPORT=y +CONFIG_NFS_COMMON=y +CONFIG_SUNRPC=y +CONFIG_SUNRPC_GSS=y +CONFIG_RPCSEC_GSS_KRB5=y +# CONFIG_RPCSEC_GSS_SPKM3 is not set +# CONFIG_SMB_FS is not set +# CONFIG_CIFS is not set +# CONFIG_NCP_FS is not set +# CONFIG_CODA_FS is not set +# CONFIG_AFS_FS is not set + +# +# Partition Types +# +# CONFIG_PARTITION_ADVANCED is not set +CONFIG_MSDOS_PARTITION=y +# CONFIG_NLS is not set +# CONFIG_DLM is not set + +# +# Kernel hacking +# +CONFIG_TRACE_IRQFLAGS_SUPPORT=y +# CONFIG_PRINTK_TIME is not set +CONFIG_ENABLE_WARN_DEPRECATED=y +CONFIG_ENABLE_MUST_CHECK=y +CONFIG_FRAME_WARN=1024 +# CONFIG_MAGIC_SYSRQ is not set +# CONFIG_UNUSED_SYMBOLS is not set +# CONFIG_DEBUG_FS is not set +# CONFIG_HEADERS_CHECK is not set +# CONFIG_DEBUG_KERNEL is not set +# CONFIG_DEBUG_MEMORY_INIT is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +# CONFIG_SYSCTL_SYSCALL_CHECK is not set +CONFIG_TRACING_SUPPORT=y + +# +# Tracers +# +# CONFIG_IRQSOFF_TRACER is not set +# CONFIG_SCHED_TRACER is not set +# CONFIG_CONTEXT_SWITCH_TRACER is not set +# CONFIG_EVENT_TRACER is not set +# CONFIG_BOOT_TRACER is not set +# CONFIG_TRACE_BRANCH_PROFILING is not set +# CONFIG_KMEMTRACE is not set +# CONFIG_WORKQUEUE_TRACER is not set +# CONFIG_BLK_DEV_IO_TRACE is not set +# CONFIG_SAMPLES is not set +CONFIG_CMDLINE="" + +# +# Security options +# +CONFIG_KEYS=y +CONFIG_KEYS_DEBUG_PROC_KEYS=y +CONFIG_SECURITY=y +# CONFIG_SECURITYFS is not set +CONFIG_SECURITY_NETWORK=y +# CONFIG_SECURITY_NETWORK_XFRM is not set +# CONFIG_SECURITY_PATH is not set +CONFIG_SECURITY_FILE_CAPABILITIES=y +CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0 +# CONFIG_SECURITY_TOMOYO is not set +CONFIG_CRYPTO=y + +# +# Crypto core or helper +# +# CONFIG_CRYPTO_FIPS is not set +CONFIG_CRYPTO_ALGAPI=y +CONFIG_CRYPTO_ALGAPI2=y +CONFIG_CRYPTO_AEAD=y +CONFIG_CRYPTO_AEAD2=y +CONFIG_CRYPTO_BLKCIPHER=y +CONFIG_CRYPTO_BLKCIPHER2=y +CONFIG_CRYPTO_HASH=y +CONFIG_CRYPTO_HASH2=y +CONFIG_CRYPTO_RNG=y +CONFIG_CRYPTO_RNG2=y +CONFIG_CRYPTO_PCOMP=y +CONFIG_CRYPTO_MANAGER=y +CONFIG_CRYPTO_MANAGER2=y +# CONFIG_CRYPTO_GF128MUL is not set +CONFIG_CRYPTO_NULL=y +CONFIG_CRYPTO_WORKQUEUE=y +CONFIG_CRYPTO_CRYPTD=y +# CONFIG_CRYPTO_AUTHENC is not set +# CONFIG_CRYPTO_TEST is not set + +# +# Authenticated Encryption with Associated Data +# +# CONFIG_CRYPTO_CCM is not set +# CONFIG_CRYPTO_GCM is not set +CONFIG_CRYPTO_SEQIV=y + +# +# Block modes +# +CONFIG_CRYPTO_CBC=y +# CONFIG_CRYPTO_CTR is not set +# CONFIG_CRYPTO_CTS is not set +# CONFIG_CRYPTO_ECB is not set +# CONFIG_CRYPTO_LRW is not set +# CONFIG_CRYPTO_PCBC is not set +# CONFIG_CRYPTO_XTS is not set + +# +# Hash modes +# +# CONFIG_CRYPTO_HMAC is not set +# CONFIG_CRYPTO_XCBC is not set + +# +# Digest +# +CONFIG_CRYPTO_CRC32C=y +CONFIG_CRYPTO_MD4=y +CONFIG_CRYPTO_MD5=y +CONFIG_CRYPTO_MICHAEL_MIC=y +# CONFIG_CRYPTO_RMD128 is not set +# CONFIG_CRYPTO_RMD160 is not set +# CONFIG_CRYPTO_RMD256 is not set +# CONFIG_CRYPTO_RMD320 is not set +# CONFIG_CRYPTO_SHA1 is not set +# CONFIG_CRYPTO_SHA256 is not set +# CONFIG_CRYPTO_SHA512 is not set +# CONFIG_CRYPTO_TGR192 is not set +# CONFIG_CRYPTO_WP512 is not set + +# +# Ciphers +# +# CONFIG_CRYPTO_AES is not set +# CONFIG_CRYPTO_ANUBIS is not set +# CONFIG_CRYPTO_ARC4 is not set +# CONFIG_CRYPTO_BLOWFISH is not set +# CONFIG_CRYPTO_CAMELLIA is not set +# CONFIG_CRYPTO_CAST5 is not set +# CONFIG_CRYPTO_CAST6 is not set +CONFIG_CRYPTO_DES=y +# CONFIG_CRYPTO_FCRYPT is not set +# CONFIG_CRYPTO_KHAZAD is not set +# CONFIG_CRYPTO_SALSA20 is not set +# CONFIG_CRYPTO_SEED is not set +# CONFIG_CRYPTO_SERPENT is not set +# CONFIG_CRYPTO_TEA is not set +# CONFIG_CRYPTO_TWOFISH is not set + +# +# Compression +# +# CONFIG_CRYPTO_DEFLATE is not set +# CONFIG_CRYPTO_ZLIB is not set +# CONFIG_CRYPTO_LZO is not set + +# +# Random Number Generation +# +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set +# CONFIG_BINARY_PRINTF is not set + +# +# Library routines +# +CONFIG_BITREVERSE=y +CONFIG_GENERIC_FIND_LAST_BIT=y +CONFIG_CRC_CCITT=y +CONFIG_CRC16=y +# CONFIG_CRC_T10DIF is not set +# CONFIG_CRC_ITU_T is not set +CONFIG_CRC32=y +# CONFIG_CRC7 is not set +CONFIG_LIBCRC32C=y +CONFIG_ZLIB_INFLATE=y +CONFIG_DECOMPRESS_GZIP=y +CONFIG_HAS_IOMEM=y +CONFIG_HAS_IOPORT=y +CONFIG_NLATTR=y diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild new file mode 100644 index 000000000000..b367abd4620f --- /dev/null +++ b/arch/score/include/asm/Kbuild @@ -0,0 +1,3 @@ +include include/asm-generic/Kbuild.asm + +header-y += diff --git a/arch/score/include/asm/asmmacro.h b/arch/score/include/asm/asmmacro.h new file mode 100644 index 000000000000..a04a54cea25d --- /dev/null +++ b/arch/score/include/asm/asmmacro.h @@ -0,0 +1,161 @@ +#ifndef _ASM_SCORE_ASMMACRO_H +#define _ASM_SCORE_ASMMACRO_H + +#include <asm/asm-offsets.h> + +#ifdef __ASSEMBLY__ + +.macro SAVE_ALL + mfcr r30, cr0 + mv r31, r0 + nop + /* if UMs == 1, change stack. */ + slli.c r30, r30, 28 + bpl 1f + la r31, kernelsp + lw r31, [r31] +1: + mv r30, r0 + addri r0, r31, -PT_SIZE + + sw r30, [r0, PT_R0] + .set r1 + sw r1, [r0, PT_R1] + .set nor1 + sw r2, [r0, PT_R2] + sw r3, [r0, PT_R3] + sw r4, [r0, PT_R4] + sw r5, [r0, PT_R5] + sw r6, [r0, PT_R6] + sw r7, [r0, PT_R7] + + sw r8, [r0, PT_R8] + sw r9, [r0, PT_R9] + sw r10, [r0, PT_R10] + sw r11, [r0, PT_R11] + sw r12, [r0, PT_R12] + sw r13, [r0, PT_R13] + sw r14, [r0, PT_R14] + sw r15, [r0, PT_R15] + + sw r16, [r0, PT_R16] + sw r17, [r0, PT_R17] + sw r18, [r0, PT_R18] + sw r19, [r0, PT_R19] + sw r20, [r0, PT_R20] + sw r21, [r0, PT_R21] + sw r22, [r0, PT_R22] + sw r23, [r0, PT_R23] + + sw r24, [r0, PT_R24] + sw r25, [r0, PT_R25] + sw r25, [r0, PT_R25] + sw r26, [r0, PT_R26] + sw r27, [r0, PT_R27] + + sw r28, [r0, PT_R28] + sw r29, [r0, PT_R29] + orri r28, r0, 0x1fff + li r31, 0x00001fff + xor r28, r28, r31 + + mfcehl r30, r31 + sw r30, [r0, PT_CEH] + sw r31, [r0, PT_CEL] + + mfcr r31, cr0 + sw r31, [r0, PT_PSR] + + mfcr r31, cr1 + sw r31, [r0, PT_CONDITION] + + mfcr r31, cr2 + sw r31, [r0, PT_ECR] + + mfcr r31, cr5 + srli r31, r31, 1 + slli r31, r31, 1 + sw r31, [r0, PT_EPC] +.endm + +.macro RESTORE_ALL_AND_RET + mfcr r30, cr0 + srli r30, r30, 1 + slli r30, r30, 1 + mtcr r30, cr0 + nop + nop + nop + nop + nop + + .set r1 + ldis r1, 0x00ff + and r30, r30, r1 + not r1, r1 + lw r31, [r0, PT_PSR] + and r31, r31, r1 + .set nor1 + or r31, r31, r30 + mtcr r31, cr0 + nop + nop + nop + nop + nop + + lw r30, [r0, PT_CONDITION] + mtcr r30, cr1 + nop + nop + nop + nop + nop + + lw r30, [r0, PT_CEH] + lw r31, [r0, PT_CEL] + mtcehl r30, r31 + + .set r1 + lw r1, [r0, PT_R1] + .set nor1 + lw r2, [r0, PT_R2] + lw r3, [r0, PT_R3] + lw r4, [r0, PT_R4] + lw r5, [r0, PT_R5] + lw r6, [r0, PT_R6] + lw r7, [r0, PT_R7] + + lw r8, [r0, PT_R8] + lw r9, [r0, PT_R9] + lw r10, [r0, PT_R10] + lw r11, [r0, PT_R11] + lw r12, [r0, PT_R12] + lw r13, [r0, PT_R13] + lw r14, [r0, PT_R14] + lw r15, [r0, PT_R15] + + lw r16, [r0, PT_R16] + lw r17, [r0, PT_R17] + lw r18, [r0, PT_R18] + lw r19, [r0, PT_R19] + lw r20, [r0, PT_R20] + lw r21, [r0, PT_R21] + lw r22, [r0, PT_R22] + lw r23, [r0, PT_R23] + + lw r24, [r0, PT_R24] + lw r25, [r0, PT_R25] + lw r26, [r0, PT_R26] + lw r27, [r0, PT_R27] + lw r28, [r0, PT_R28] + lw r29, [r0, PT_R29] + + lw r30, [r0, PT_EPC] + lw r0, [r0, PT_R0] + mtcr r30, cr5 + rte +.endm + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_SCORE_ASMMACRO_H */ diff --git a/arch/score/include/asm/atomic.h b/arch/score/include/asm/atomic.h new file mode 100644 index 000000000000..84eb8ddf9f3f --- /dev/null +++ b/arch/score/include/asm/atomic.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_ATOMIC_H +#define _ASM_SCORE_ATOMIC_H + +#include <asm-generic/atomic.h> + +#endif /* _ASM_SCORE_ATOMIC_H */ diff --git a/arch/score/include/asm/auxvec.h b/arch/score/include/asm/auxvec.h new file mode 100644 index 000000000000..f69151565aee --- /dev/null +++ b/arch/score/include/asm/auxvec.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_AUXVEC_H +#define _ASM_SCORE_AUXVEC_H + +#endif /* _ASM_SCORE_AUXVEC_H */ diff --git a/arch/score/include/asm/bitops.h b/arch/score/include/asm/bitops.h new file mode 100644 index 000000000000..2763b050fca8 --- /dev/null +++ b/arch/score/include/asm/bitops.h @@ -0,0 +1,16 @@ +#ifndef _ASM_SCORE_BITOPS_H +#define _ASM_SCORE_BITOPS_H + +#include <asm/byteorder.h> /* swab32 */ +#include <asm/system.h> /* save_flags */ + +/* + * clear_bit() doesn't provide any barrier for the compiler. + */ +#define smp_mb__before_clear_bit() barrier() +#define smp_mb__after_clear_bit() barrier() + +#include <asm-generic/bitops.h> +#include <asm-generic/bitops/__fls.h> + +#endif /* _ASM_SCORE_BITOPS_H */ diff --git a/arch/score/include/asm/bitsperlong.h b/arch/score/include/asm/bitsperlong.h new file mode 100644 index 000000000000..86ff337aa459 --- /dev/null +++ b/arch/score/include/asm/bitsperlong.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_BITSPERLONG_H +#define _ASM_SCORE_BITSPERLONG_H + +#include <asm-generic/bitsperlong.h> + +#endif /* _ASM_SCORE_BITSPERLONG_H */ diff --git a/arch/score/include/asm/bug.h b/arch/score/include/asm/bug.h new file mode 100644 index 000000000000..bb76a330bcf1 --- /dev/null +++ b/arch/score/include/asm/bug.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_BUG_H +#define _ASM_SCORE_BUG_H + +#include <asm-generic/bug.h> + +#endif /* _ASM_SCORE_BUG_H */ diff --git a/arch/score/include/asm/bugs.h b/arch/score/include/asm/bugs.h new file mode 100644 index 000000000000..a062e1056bb3 --- /dev/null +++ b/arch/score/include/asm/bugs.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_BUGS_H +#define _ASM_SCORE_BUGS_H + +#include <asm-generic/bugs.h> + +#endif /* _ASM_SCORE_BUGS_H */ diff --git a/arch/score/include/asm/byteorder.h b/arch/score/include/asm/byteorder.h new file mode 100644 index 000000000000..88cbebc79212 --- /dev/null +++ b/arch/score/include/asm/byteorder.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_BYTEORDER_H +#define _ASM_SCORE_BYTEORDER_H + +#include <linux/byteorder/little_endian.h> + +#endif /* _ASM_SCORE_BYTEORDER_H */ diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h new file mode 100644 index 000000000000..ae3d59f2d2c4 --- /dev/null +++ b/arch/score/include/asm/cache.h @@ -0,0 +1,7 @@ +#ifndef _ASM_SCORE_CACHE_H +#define _ASM_SCORE_CACHE_H + +#define L1_CACHE_SHIFT 4 +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) + +#endif /* _ASM_SCORE_CACHE_H */ diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h new file mode 100644 index 000000000000..1c74628caf71 --- /dev/null +++ b/arch/score/include/asm/cacheflush.h @@ -0,0 +1,47 @@ +#ifndef _ASM_SCORE_CACHEFLUSH_H +#define _ASM_SCORE_CACHEFLUSH_H + +/* Keep includes the same across arches. */ +#include <linux/mm.h> + +extern void (*flush_cache_all)(void); +extern void (*flush_cache_mm)(struct mm_struct *mm); +extern void (*flush_cache_range)(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +extern void (*flush_cache_page)(struct vm_area_struct *vma, + unsigned long page, unsigned long pfn); +extern void (*flush_cache_sigtramp)(unsigned long addr); +extern void (*flush_icache_all)(void); +extern void (*flush_icache_range)(unsigned long start, unsigned long end); +extern void (*flush_data_cache_page)(unsigned long addr); + +extern void s7_flush_cache_all(void); + +#define flush_cache_dup_mm(mm) do {} while (0) +#define flush_dcache_page(page) do {} while (0) +#define flush_dcache_mmap_lock(mapping) do {} while (0) +#define flush_dcache_mmap_unlock(mapping) do {} while (0) +#define flush_cache_vmap(start, end) do {} while (0) +#define flush_cache_vunmap(start, end) do {} while (0) + +static inline void flush_icache_page(struct vm_area_struct *vma, + struct page *page) +{ + if (vma->vm_flags & VM_EXEC) { + void *v = page_address(page); + flush_icache_range((unsigned long) v, + (unsigned long) v + PAGE_SIZE); + } +} + +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + memcpy(dst, src, len); \ + if ((vma->vm_flags & VM_EXEC)) \ + flush_cache_page(vma, vaddr, page_to_pfn(page));\ + } while (0) + +#endif /* _ASM_SCORE_CACHEFLUSH_H */ diff --git a/arch/score/include/asm/checksum.h b/arch/score/include/asm/checksum.h new file mode 100644 index 000000000000..f909ac3144a4 --- /dev/null +++ b/arch/score/include/asm/checksum.h @@ -0,0 +1,235 @@ +#ifndef _ASM_SCORE_CHECKSUM_H +#define _ASM_SCORE_CHECKSUM_H + +#include <linux/in6.h> +#include <asm/uaccess.h> + +/* + * computes the checksum of a memory block at buff, length len, + * and adds in "sum" (32-bit) + * + * returns a 32-bit number suitable for feeding into itself + * or csum_tcpudp_magic + * + * this function must be called with even lengths, except + * for the last fragment, which may be odd + * + * it's best to have buff aligned on a 32-bit boundary + */ +unsigned int csum_partial(const void *buff, int len, __wsum sum); +unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len, + unsigned int sum, int *csum_err); +unsigned int csum_partial_copy(const char *src, char *dst, + int len, unsigned int sum); + +/* + * this is a new version of the above that records errors it finds in *errp, + * but continues and zeros the rest of the buffer. + */ + +/* + * Copy and checksum to user + */ +#define HAVE_CSUM_COPY_USER +static inline +__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len, + __wsum sum, int *err_ptr) +{ + sum = csum_partial(src, len, sum); + if (copy_to_user(dst, src, len)) { + *err_ptr = -EFAULT; + return (__force __wsum) -1; /* invalid checksum */ + } + return sum; +} + + +#define csum_partial_copy_nocheck csum_partial_copy +/* + * Fold a partial checksum without adding pseudo headers + */ + +static inline __sum16 csum_fold(__wsum sum) +{ + /* the while loop is unnecessary really, it's always enough with two + iterations */ + __asm__ __volatile__( + ".set volatile\n\t" + ".set\tr1\n\t" + "slli\tr1,%0, 16\n\t" + "add\t%0,%0, r1\n\t" + "cmp.c\tr1, %0\n\t" + "srli\t%0, %0, 16\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:ldi\tr30, 0xffff\n\t" + "xor\t%0, %0, r30\n\t" + "slli\t%0, %0, 16\n\t" + "srli\t%0, %0, 16\n\t" + ".set\tnor1\n\t" + ".set optimize\n\t" + : "=r" (sum) + : "0" (sum)); + return sum; +} + +/* + * This is a version of ip_compute_csum() optimized for IP headers, + * which always checksum on 4 octet boundaries. + * + * By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by + * Arnt Gulbrandsen. + */ +static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) +{ + unsigned int sum; + unsigned long dummy; + + __asm__ __volatile__( + ".set volatile\n\t" + ".set\tnor1\n\t" + "lw\t%0, [%1]\n\t" + "subri\t%2, %2, 4\n\t" + "slli\t%2, %2, 2\n\t" + "lw\t%3, [%1, 4]\n\t" + "add\t%2, %2, %1\n\t" + "add\t%0, %0, %3\n\t" + "cmp.c\t%3, %0\n\t" + "lw\t%3, [%1, 8]\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:\n\t" + "add\t%0, %0, %3\n\t" + "cmp.c\t%3, %0\n\t" + "lw\t%3, [%1, 12]\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %3\n\t" + "cmp.c\t%3, %0\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n" + + "1:\tlw\t%3, [%1, 16]\n\t" + "addi\t%1, 4\n\t" + "add\t%0, %0, %3\n\t" + "cmp.c\t%3, %0\n\t" + "bleu\t2f\n\t" + "addi\t%0, 0x1\n" + "2:cmp.c\t%2, %1\n\t" + "bne\t1b\n\t" + + ".set\tr1\n\t" + ".set optimize\n\t" + : "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy) + : "1" (iph), "2" (ihl)); + + return csum_fold(sum); +} + +static inline __wsum +csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, + unsigned short proto, __wsum sum) +{ + unsigned long tmp = (ntohs(len) << 16) + proto * 256; + __asm__ __volatile__( + ".set volatile\n\t" + "add\t%0, %0, %2\n\t" + "cmp.c\t%2, %0\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:\n\t" + "add\t%0, %0, %3\n\t" + "cmp.c\t%3, %0\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:\n\t" + "add\t%0, %0, %4\n\t" + "cmp.c\t%4, %0\n\t" + "bleu\t1f\n\t" + "addi\t%0, 0x1\n\t" + "1:\n\t" + ".set optimize\n\t" + : "=r" (sum) + : "0" (daddr), "r"(saddr), + "r" (tmp), + "r" (sum)); + return sum; +} + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 16-bit checksum, already complemented + */ +static inline __sum16 +csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len, + unsigned short proto, __wsum sum) +{ + return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum)); +} + +/* + * this routine is used for miscellaneous IP-like checksums, mainly + * in icmp.c + */ + +static inline unsigned short ip_compute_csum(const void *buff, int len) +{ + return csum_fold(csum_partial(buff, len, 0)); +} + +#define _HAVE_ARCH_IPV6_CSUM +static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u32 len, unsigned short proto, + __wsum sum) +{ + __asm__ __volatile__( + ".set\tnoreorder\t\t\t# csum_ipv6_magic\n\t" + ".set\tnoat\n\t" + "addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t" + "sltu\t$1, %0, %5\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %6\t\t\t# csum\n\t" + "sltu\t$1, %0, %6\n\t" + "lw\t%1, 0(%2)\t\t\t# four words source address\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 4(%2)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 8(%2)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 12(%2)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 0(%3)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 4(%3)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 8(%3)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "lw\t%1, 12(%3)\n\t" + "addu\t%0, $1\n\t" + "addu\t%0, %1\n\t" + "sltu\t$1, %0, %1\n\t" + "addu\t%0, $1\t\t\t# Add final carry\n\t" + ".set\tnoat\n\t" + ".set\tnoreorder" + : "=r" (sum), "=r" (proto) + : "r" (saddr), "r" (daddr), + "0" (htonl(len)), "1" (htonl(proto)), "r" (sum)); + + return csum_fold(sum); +} +#endif /* _ASM_SCORE_CHECKSUM_H */ diff --git a/arch/score/include/asm/cputime.h b/arch/score/include/asm/cputime.h new file mode 100644 index 000000000000..1fced99f0d67 --- /dev/null +++ b/arch/score/include/asm/cputime.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_CPUTIME_H +#define _ASM_SCORE_CPUTIME_H + +#include <asm-generic/cputime.h> + +#endif /* _ASM_SCORE_CPUTIME_H */ diff --git a/arch/score/include/asm/current.h b/arch/score/include/asm/current.h new file mode 100644 index 000000000000..16eae9cbaf1a --- /dev/null +++ b/arch/score/include/asm/current.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_CURRENT_H +#define _ASM_SCORE_CURRENT_H + +#include <asm-generic/current.h> + +#endif /* _ASM_SCORE_CURRENT_H */ diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h new file mode 100644 index 000000000000..ad716f6d922d --- /dev/null +++ b/arch/score/include/asm/delay.h @@ -0,0 +1,21 @@ +#ifndef _ASM_SCORE_DELAY_H +#define _ASM_SCORE_DELAY_H + +static inline void __delay(unsigned long loops) +{ + __asm__ __volatile__ ( + "1:\tsubi\t%0,1\n\t" + "cmpz.c\t%0\n\t" + "bne\t1b\n\t" + : "=r" (loops) + : "0" (loops)); +} + +static inline void __udelay(unsigned long usecs) +{ + __delay(usecs); +} + +#define udelay(usecs) __udelay(usecs) + +#endif /* _ASM_SCORE_DELAY_H */ diff --git a/arch/score/include/asm/device.h b/arch/score/include/asm/device.h new file mode 100644 index 000000000000..2dc7cc5d5ef9 --- /dev/null +++ b/arch/score/include/asm/device.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_DEVICE_H +#define _ASM_SCORE_DEVICE_H + +#include <asm-generic/device.h> + +#endif /* _ASM_SCORE_DEVICE_H */ diff --git a/arch/score/include/asm/div64.h b/arch/score/include/asm/div64.h new file mode 100644 index 000000000000..75fae19824eb --- /dev/null +++ b/arch/score/include/asm/div64.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_DIV64_H +#define _ASM_SCORE_DIV64_H + +#include <asm-generic/div64.h> + +#endif /* _ASM_SCORE_DIV64_H */ diff --git a/arch/score/include/asm/dma-mapping.h b/arch/score/include/asm/dma-mapping.h new file mode 100644 index 000000000000..f9c0193c7a53 --- /dev/null +++ b/arch/score/include/asm/dma-mapping.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_DMA_MAPPING_H +#define _ASM_SCORE_DMA_MAPPING_H + +#include <asm-generic/dma-mapping-broken.h> + +#endif /* _ASM_SCORE_DMA_MAPPING_H */ diff --git a/arch/score/include/asm/dma.h b/arch/score/include/asm/dma.h new file mode 100644 index 000000000000..9f44185298bf --- /dev/null +++ b/arch/score/include/asm/dma.h @@ -0,0 +1,8 @@ +#ifndef _ASM_SCORE_DMA_H +#define _ASM_SCORE_DMA_H + +#include <asm/io.h> + +#define MAX_DMA_ADDRESS (0) + +#endif /* _ASM_SCORE_DMA_H */ diff --git a/arch/score/include/asm/elf.h b/arch/score/include/asm/elf.h new file mode 100644 index 000000000000..832436375ac3 --- /dev/null +++ b/arch/score/include/asm/elf.h @@ -0,0 +1,99 @@ +#ifndef _ASM_SCORE_ELF_H +#define _ASM_SCORE_ELF_H + +/* ELF register definitions */ +#define ELF_NGREG 45 +#define ELF_NFPREG 33 +#define EM_SCORE7 135 + +/* Relocation types. */ +#define R_SCORE_NONE 0 +#define R_SCORE_HI16 1 +#define R_SCORE_LO16 2 +#define R_SCORE_BCMP 3 +#define R_SCORE_24 4 +#define R_SCORE_PC19 5 +#define R_SCORE16_11 6 +#define R_SCORE16_PC8 7 +#define R_SCORE_ABS32 8 +#define R_SCORE_ABS16 9 +#define R_SCORE_DUMMY2 10 +#define R_SCORE_GP15 11 +#define R_SCORE_GNU_VTINHERIT 12 +#define R_SCORE_GNU_VTENTRY 13 +#define R_SCORE_GOT15 14 +#define R_SCORE_GOT_LO16 15 +#define R_SCORE_CALL15 16 +#define R_SCORE_GPREL32 17 +#define R_SCORE_REL32 18 +#define R_SCORE_DUMMY_HI16 19 +#define R_SCORE_IMM30 20 +#define R_SCORE_IMM32 21 + +typedef unsigned long elf_greg_t; +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +typedef double elf_fpreg_t; +typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; + +#define elf_check_arch(x) ((x)->e_machine == EM_SCORE7) + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_CLASS ELFCLASS32 + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_DATA ELFDATA2LSB +#define ELF_ARCH EM_SCORE7 + +#define SET_PERSONALITY(ex) \ +do { \ + set_personality(PER_LINUX); \ +} while (0) + +struct task_struct; +struct pt_regs; + +#define USE_ELF_CORE_DUMP +#define ELF_EXEC_PAGESIZE PAGE_SIZE + +/* This yields a mask that user programs can use to figure out what + instruction set this cpu supports. This could be done in userspace, + but it's not easy, and we've already done it here. */ + +#define ELF_HWCAP (0) + +/* This yields a string that ld.so will use to load implementation + specific libraries for optimization. This is more specific in + intent than poking at uname or /proc/cpuinfo. + + For the moment, we have only optimizations for the Intel generations, + but that could change... */ + +#define ELF_PLATFORM (NULL) + +#define ELF_PLAT_INIT(_r, load_addr) \ +do { \ + _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \ + _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \ + _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \ + _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \ + _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \ + _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \ + _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \ + _r->regs[30] = _r->regs[31] = 0; \ +} while (0) + +/* This is the location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +#ifndef ELF_ET_DYN_BASE +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) +#endif + +#endif /* _ASM_SCORE_ELF_H */ diff --git a/arch/score/include/asm/emergency-restart.h b/arch/score/include/asm/emergency-restart.h new file mode 100644 index 000000000000..ca31e9803a8a --- /dev/null +++ b/arch/score/include/asm/emergency-restart.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_EMERGENCY_RESTART_H +#define _ASM_SCORE_EMERGENCY_RESTART_H + +#include <asm-generic/emergency-restart.h> + +#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */ diff --git a/arch/score/include/asm/errno.h b/arch/score/include/asm/errno.h new file mode 100644 index 000000000000..7cd3e1f07c0b --- /dev/null +++ b/arch/score/include/asm/errno.h @@ -0,0 +1,7 @@ +#ifndef _ASM_SCORE_ERRNO_H +#define _ASM_SCORE_ERRNO_H + +#include <asm-generic/errno.h> +#define EMAXERRNO 1024 + +#endif /* _ASM_SCORE_ERRNO_H */ diff --git a/arch/score/include/asm/fcntl.h b/arch/score/include/asm/fcntl.h new file mode 100644 index 000000000000..03968a3103a4 --- /dev/null +++ b/arch/score/include/asm/fcntl.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_FCNTL_H +#define _ASM_SCORE_FCNTL_H + +#include <asm-generic/fcntl.h> + +#endif /* _ASM_SCORE_FCNTL_H */ diff --git a/arch/score/include/asm/fixmap.h b/arch/score/include/asm/fixmap.h new file mode 100644 index 000000000000..ee1676694024 --- /dev/null +++ b/arch/score/include/asm/fixmap.h @@ -0,0 +1,82 @@ +#ifndef _ASM_SCORE_FIXMAP_H +#define _ASM_SCORE_FIXMAP_H + +#include <asm/page.h> + +#define PHY_RAM_BASE 0x00000000 +#define PHY_IO_BASE 0x10000000 + +#define VIRTUAL_RAM_BASE 0xa0000000 +#define VIRTUAL_IO_BASE 0xb0000000 + +#define RAM_SPACE_SIZE 0x10000000 +#define IO_SPACE_SIZE 0x10000000 + +/* Kernel unmapped, cached 512MB */ +#define KSEG1 0xa0000000 + +/* + * Here we define all the compile-time 'special' virtual + * addresses. The point is to have a constant address at + * compile time, but to set the physical address only + * in the boot process. We allocate these special addresses + * from the end of virtual memory (0xfffff000) backwards. + * Also this lets us do fail-safe vmalloc(), we + * can guarantee that these special addresses and + * vmalloc()-ed addresses never overlap. + * + * these 'compile-time allocated' memory buffers are + * fixed-size 4k pages. (or larger if used with an increment + * highger than 1) use fixmap_set(idx,phys) to associate + * physical memory with fixmap indices. + * + * TLB entries of such buffers will not be flushed across + * task switches. + */ + +/* + * on UP currently we will have no trace of the fixmap mechanizm, + * no page table allocations, etc. This might change in the + * future, say framebuffers for the console driver(s) could be + * fix-mapped? + */ +enum fixed_addresses { +#define FIX_N_COLOURS 8 + FIX_CMAP_BEGIN, + FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS, + __end_of_fixed_addresses +}; + +/* + * used by vmalloc.c. + * + * Leave one empty page between vmalloc'ed areas and + * the start of the fixmap, and leave one page empty + * at the top of mem.. + */ +#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000) +#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) +#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) + +#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) +#define __virt_to_fix(x) \ + ((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT) + +extern void __this_fixmap_does_not_exist(void); + +/* + * 'index to address' translation. If anyone tries to use the idx + * directly without tranlation, we catch the bug with a NULL-deference + * kernel oops. Illegal ranges of incoming indices are caught too. + */ +static inline unsigned long fix_to_virt(const unsigned int idx) +{ + return __fix_to_virt(idx); +} + +static inline unsigned long virt_to_fix(const unsigned long vaddr) +{ + return __virt_to_fix(vaddr); +} + +#endif /* _ASM_SCORE_FIXMAP_H */ diff --git a/arch/score/include/asm/ftrace.h b/arch/score/include/asm/ftrace.h new file mode 100644 index 000000000000..79d6f10e1f5b --- /dev/null +++ b/arch/score/include/asm/ftrace.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_FTRACE_H +#define _ASM_SCORE_FTRACE_H + +#endif /* _ASM_SCORE_FTRACE_H */ diff --git a/arch/score/include/asm/futex.h b/arch/score/include/asm/futex.h new file mode 100644 index 000000000000..1dca2420f8db --- /dev/null +++ b/arch/score/include/asm/futex.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_FUTEX_H +#define _ASM_SCORE_FUTEX_H + +#include <asm-generic/futex.h> + +#endif /* _ASM_SCORE_FUTEX_H */ diff --git a/arch/score/include/asm/hardirq.h b/arch/score/include/asm/hardirq.h new file mode 100644 index 000000000000..dc932c50d3ee --- /dev/null +++ b/arch/score/include/asm/hardirq.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_HARDIRQ_H +#define _ASM_SCORE_HARDIRQ_H + +#include <asm-generic/hardirq.h> + +#endif /* _ASM_SCORE_HARDIRQ_H */ diff --git a/arch/score/include/asm/hw_irq.h b/arch/score/include/asm/hw_irq.h new file mode 100644 index 000000000000..4caafb2b509a --- /dev/null +++ b/arch/score/include/asm/hw_irq.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_HW_IRQ_H +#define _ASM_SCORE_HW_IRQ_H + +#endif /* _ASM_SCORE_HW_IRQ_H */ diff --git a/arch/score/include/asm/io.h b/arch/score/include/asm/io.h new file mode 100644 index 000000000000..fbbfd7132e3b --- /dev/null +++ b/arch/score/include/asm/io.h @@ -0,0 +1,9 @@ +#ifndef _ASM_SCORE_IO_H +#define _ASM_SCORE_IO_H + +#include <asm-generic/io.h> + +#define virt_to_bus virt_to_phys +#define bus_to_virt phys_to_virt + +#endif /* _ASM_SCORE_IO_H */ diff --git a/arch/score/include/asm/ioctl.h b/arch/score/include/asm/ioctl.h new file mode 100644 index 000000000000..a351d2194bfd --- /dev/null +++ b/arch/score/include/asm/ioctl.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_IOCTL_H +#define _ASM_SCORE_IOCTL_H + +#include <asm-generic/ioctl.h> + +#endif /* _ASM_SCORE_IOCTL_H */ diff --git a/arch/score/include/asm/ioctls.h b/arch/score/include/asm/ioctls.h new file mode 100644 index 000000000000..ed01d2b9aeab --- /dev/null +++ b/arch/score/include/asm/ioctls.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_IOCTLS_H +#define _ASM_SCORE_IOCTLS_H + +#include <asm-generic/ioctls.h> + +#endif /* _ASM_SCORE_IOCTLS_H */ diff --git a/arch/score/include/asm/ipcbuf.h b/arch/score/include/asm/ipcbuf.h new file mode 100644 index 000000000000..e082ceff1818 --- /dev/null +++ b/arch/score/include/asm/ipcbuf.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_IPCBUF_H +#define _ASM_SCORE_IPCBUF_H + +#include <asm-generic/ipcbuf.h> + +#endif /* _ASM_SCORE_IPCBUF_H */ diff --git a/arch/score/include/asm/irq.h b/arch/score/include/asm/irq.h new file mode 100644 index 000000000000..401f6704848c --- /dev/null +++ b/arch/score/include/asm/irq.h @@ -0,0 +1,33 @@ +#ifndef _ASM_SCORE_IRQ_H +#define _ASM_SCORE_IRQ_H + +#define EXCEPTION_VECTOR_BASE_ADDR 0xa0000000 +#define VECTOR_ADDRESS_OFFSET_MODE4 0 +#define VECTOR_ADDRESS_OFFSET_MODE16 1 + +#define DEBUG_VECTOR_SIZE (0x4) +#define DEBUG_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc) + +#define GENERAL_VECTOR_SIZE (0x10) +#define GENERAL_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x200) + +#define NR_IRQS 64 +#define IRQ_VECTOR_SIZE (0x10) +#define IRQ_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x210) +#define IRQ_VECTOR_END_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0) + +#define irq_canonicalize(irq) (irq) + +#define P_INT_PNDL 0x95F50000 +#define P_INT_PNDH 0x95F50004 +#define P_INT_PRIORITY_M 0x95F50008 +#define P_INT_PRIORITY_SG0 0x95F50010 +#define P_INT_PRIORITY_SG1 0x95F50014 +#define P_INT_PRIORITY_SG2 0x95F50018 +#define P_INT_PRIORITY_SG3 0x95F5001C +#define P_INT_MASKL 0x95F50020 +#define P_INT_MASKH 0x95F50024 + +#define IRQ_TIMER (7) /* Timer IRQ number of SPCT6600 */ + +#endif /* _ASM_SCORE_IRQ_H */ diff --git a/arch/score/include/asm/irq_regs.h b/arch/score/include/asm/irq_regs.h new file mode 100644 index 000000000000..905b7b078bae --- /dev/null +++ b/arch/score/include/asm/irq_regs.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_IRQ_REGS_H +#define _ASM_SCORE_IRQ_REGS_H + +#include <asm-generic/irq_regs.h> + +#endif /* _ASM_SCORE_IRQ_REGS_H */ diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h new file mode 100644 index 000000000000..92eeb33dd72b --- /dev/null +++ b/arch/score/include/asm/irqflags.h @@ -0,0 +1,111 @@ +#ifndef _ASM_SCORE_IRQFLAGS_H +#define _ASM_SCORE_IRQFLAGS_H + +#ifndef __ASSEMBLY__ + +#define raw_local_irq_save(x) \ +{ \ + __asm__ __volatile__( \ + "mfcr r8, cr0;" \ + "li r9, 0xfffffffe;" \ + "nop;" \ + "mv %0, r8;" \ + "and r8, r8, r9;" \ + "mtcr r8, cr0;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "ldi r9, 0x1;" \ + "and %0, %0, r9;" \ + : "=r" (x) \ + : \ + : "r8", "r9" \ + ); \ +} + +#define raw_local_irq_restore(x) \ +{ \ + __asm__ __volatile__( \ + "mfcr r8, cr0;" \ + "ldi r9, 0x1;" \ + "and %0, %0, r9;" \ + "or r8, r8, %0;" \ + "mtcr r8, cr0;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + : \ + : "r"(x) \ + : "r8", "r9" \ + ); \ +} + +#define raw_local_irq_enable(void) \ +{ \ + __asm__ __volatile__( \ + "mfcr\tr8,cr0;" \ + "nop;" \ + "nop;" \ + "ori\tr8,0x1;" \ + "mtcr\tr8,cr0;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + : \ + : \ + : "r8"); \ +} + +#define raw_local_irq_disable(void) \ +{ \ + __asm__ __volatile__( \ + "mfcr\tr8,cr0;" \ + "nop;" \ + "nop;" \ + "srli\tr8,r8,1;" \ + "slli\tr8,r8,1;" \ + "mtcr\tr8,cr0;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + : \ + : \ + : "r8"); \ +} + +#define raw_local_save_flags(x) \ +{ \ + __asm__ __volatile__( \ + "mfcr r8, cr0;" \ + "nop;" \ + "nop;" \ + "mv %0, r8;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "nop;" \ + "ldi r9, 0x1;" \ + "and %0, %0, r9;" \ + : "=r" (x) \ + : \ + : "r8", "r9" \ + ); \ +} + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & 1); +} + +#endif + +#endif /* _ASM_SCORE_IRQFLAGS_H */ diff --git a/arch/score/include/asm/kdebug.h b/arch/score/include/asm/kdebug.h new file mode 100644 index 000000000000..a666e513f747 --- /dev/null +++ b/arch/score/include/asm/kdebug.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_KDEBUG_H +#define _ASM_SCORE_KDEBUG_H + +#include <asm-generic/kdebug.h> + +#endif /* _ASM_SCORE_KDEBUG_H */ diff --git a/arch/score/include/asm/kmap_types.h b/arch/score/include/asm/kmap_types.h new file mode 100644 index 000000000000..6c46eb5077d3 --- /dev/null +++ b/arch/score/include/asm/kmap_types.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_KMAP_TYPES_H +#define _ASM_SCORE_KMAP_TYPES_H + +#include <asm-generic/kmap_types.h> + +#endif /* _ASM_SCORE_KMAP_TYPES_H */ diff --git a/arch/score/include/asm/linkage.h b/arch/score/include/asm/linkage.h new file mode 100644 index 000000000000..2580fbbfe946 --- /dev/null +++ b/arch/score/include/asm/linkage.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_LINKAGE_H +#define _ASM_SCORE_LINKAGE_H + +#endif /* _ASM_SCORE_LINKAGE_H */ diff --git a/arch/score/include/asm/local.h b/arch/score/include/asm/local.h new file mode 100644 index 000000000000..7e02f13dbba8 --- /dev/null +++ b/arch/score/include/asm/local.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_LOCAL_H +#define _ASM_SCORE_LOCAL_H + +#include <asm-generic/local.h> + +#endif /* _ASM_SCORE_LOCAL_H */ diff --git a/arch/score/include/asm/mman.h b/arch/score/include/asm/mman.h new file mode 100644 index 000000000000..84d85ddfed8d --- /dev/null +++ b/arch/score/include/asm/mman.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_MMAN_H +#define _ASM_SCORE_MMAN_H + +#include <asm-generic/mman.h> + +#endif /* _ASM_SCORE_MMAN_H */ diff --git a/arch/score/include/asm/mmu.h b/arch/score/include/asm/mmu.h new file mode 100644 index 000000000000..676828e4c10a --- /dev/null +++ b/arch/score/include/asm/mmu.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_MMU_H +#define _ASM_SCORE_MMU_H + +typedef unsigned long mm_context_t; + +#endif /* _ASM_SCORE_MMU_H */ diff --git a/arch/score/include/asm/mmu_context.h b/arch/score/include/asm/mmu_context.h new file mode 100644 index 000000000000..2644577c96e8 --- /dev/null +++ b/arch/score/include/asm/mmu_context.h @@ -0,0 +1,113 @@ +#ifndef _ASM_SCORE_MMU_CONTEXT_H +#define _ASM_SCORE_MMU_CONTEXT_H + +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <asm-generic/mm_hooks.h> + +#include <asm/cacheflush.h> +#include <asm/tlbflush.h> +#include <asm/scoreregs.h> + +/* + * For the fast tlb miss handlers, we keep a per cpu array of pointers + * to the current pgd for each processor. Also, the proc. id is stuffed + * into the context register. + */ +extern unsigned long asid_cache; +extern unsigned long pgd_current; + +#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd)) + +#define TLBMISS_HANDLER_SETUP() \ +do { \ + write_c0_context(0); \ + TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir) \ +} while (0) + +/* + * All unused by hardware upper bits will be considered + * as a software asid extension. + */ +#define ASID_VERSION_MASK 0xfffff000 +#define ASID_FIRST_VERSION 0x1000 + +/* PEVN --------- VPN ---------- --ASID--- -NA- */ +/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */ +/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */ +#define ASID_INC 0x10 +#define ASID_MASK 0xff0 + +static inline void enter_lazy_tlb(struct mm_struct *mm, + struct task_struct *tsk) +{} + +static inline void +get_new_mmu_context(struct mm_struct *mm) +{ + unsigned long asid = asid_cache + ASID_INC; + + if (!(asid & ASID_MASK)) { + local_flush_tlb_all(); /* start new asid cycle */ + if (!asid) /* fix version if needed */ + asid = ASID_FIRST_VERSION; + } + + mm->context = asid; + asid_cache = asid; +} + +/* + * Initialize the context related info for a new mm_struct + * instance. + */ +static inline int +init_new_context(struct task_struct *tsk, struct mm_struct *mm) +{ + mm->context = 0; + return 0; +} + +static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) +{ + unsigned long flags; + + local_irq_save(flags); + if ((next->context ^ asid_cache) & ASID_VERSION_MASK) + get_new_mmu_context(next); + + pevn_set(next->context); + TLBMISS_HANDLER_SETUP_PGD(next->pgd); + local_irq_restore(flags); +} + +/* + * Destroy context related info for an mm_struct that is about + * to be put to rest. + */ +static inline void destroy_context(struct mm_struct *mm) +{} + +static inline void +deactivate_mm(struct task_struct *task, struct mm_struct *mm) +{} + +/* + * After we have set current->mm to a new value, this activates + * the context for the new mm so we see the new mappings. + */ +static inline void +activate_mm(struct mm_struct *prev, struct mm_struct *next) +{ + unsigned long flags; + + local_irq_save(flags); + get_new_mmu_context(next); + pevn_set(next->context); + TLBMISS_HANDLER_SETUP_PGD(next->pgd); + local_irq_restore(flags); +} + +#endif /* _ASM_SCORE_MMU_CONTEXT_H */ diff --git a/arch/score/include/asm/module.h b/arch/score/include/asm/module.h new file mode 100644 index 000000000000..f0b5dc0bd023 --- /dev/null +++ b/arch/score/include/asm/module.h @@ -0,0 +1,39 @@ +#ifndef _ASM_SCORE_MODULE_H +#define _ASM_SCORE_MODULE_H + +#include <linux/list.h> +#include <asm/uaccess.h> + +struct mod_arch_specific { + /* Data Bus Error exception tables */ + struct list_head dbe_list; + const struct exception_table_entry *dbe_start; + const struct exception_table_entry *dbe_end; +}; + +typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */ + +#define Elf_Shdr Elf32_Shdr +#define Elf_Sym Elf32_Sym +#define Elf_Ehdr Elf32_Ehdr +#define Elf_Addr Elf32_Addr + +/* Given an address, look for it in the exception tables. */ +#ifdef CONFIG_MODULES +const struct exception_table_entry *search_module_dbetables(unsigned long addr); +#else +static inline const struct exception_table_entry +*search_module_dbetables(unsigned long addr) +{ + return NULL; +} +#endif + +#define MODULE_PROC_FAMILY "SCORE7" +#define MODULE_KERNEL_TYPE "32BIT " +#define MODULE_KERNEL_SMTC "" + +#define MODULE_ARCH_VERMAGIC \ + MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC + +#endif /* _ASM_SCORE_MODULE_H */ diff --git a/arch/score/include/asm/msgbuf.h b/arch/score/include/asm/msgbuf.h new file mode 100644 index 000000000000..7506721e29fa --- /dev/null +++ b/arch/score/include/asm/msgbuf.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_MSGBUF_H +#define _ASM_SCORE_MSGBUF_H + +#include <asm-generic/msgbuf.h> + +#endif /* _ASM_SCORE_MSGBUF_H */ diff --git a/arch/score/include/asm/mutex.h b/arch/score/include/asm/mutex.h new file mode 100644 index 000000000000..10d48fe4db97 --- /dev/null +++ b/arch/score/include/asm/mutex.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_MUTEX_H +#define _ASM_SCORE_MUTEX_H + +#include <asm-generic/mutex-dec.h> + +#endif /* _ASM_SCORE_MUTEX_H */ diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h new file mode 100644 index 000000000000..67e98206be6a --- /dev/null +++ b/arch/score/include/asm/page.h @@ -0,0 +1,92 @@ +#ifndef _ASM_SCORE_PAGE_H +#define _ASM_SCORE_PAGE_H + +#include <linux/pfn.h> + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT (12) +#define PAGE_SIZE (1UL << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ + +#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1))) +#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1))) + +/* align addr on a size boundary - adjust address up/down if needed */ +#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1))) +#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1))) + +/* align addr on a size boundary - adjust address up if needed */ +#define _ALIGN(addr, size) _ALIGN_UP(addr, size) + +/* + * PAGE_OFFSET -- the first address of the first page of memory. When not + * using MMU this corresponds to the first free page in physical memory (aligned + * on a page boundary). + */ +#define PAGE_OFFSET (0xA0000000UL) + +#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE) +#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) + +#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE) +#define copy_user_page(vto, vfrom, vaddr, topg) \ + memcpy((vto), (vfrom), PAGE_SIZE) + +/* + * These are used to make use of C type-checking.. + */ + +typedef struct { unsigned long pte; } pte_t; /* page table entry */ +typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */ +typedef struct { unsigned long pgprot; } pgprot_t; +typedef struct page *pgtable_t; + +#define pte_val(x) ((x).pte) +#define pgd_val(x) ((x).pgd) +#define pgprot_val(x) ((x).pgprot) + +#define __pte(x) ((pte_t) { (x) }) +#define __pgd(x) ((pgd_t) { (x) }) +#define __pgprot(x) ((pgprot_t) { (x) }) + +extern unsigned long max_low_pfn; +extern unsigned long min_low_pfn; +extern unsigned long max_pfn; + +#define __pa(vaddr) ((unsigned long) (vaddr)) +#define __va(paddr) ((void *) (paddr)) + +#define phys_to_pfn(phys) (PFN_DOWN(phys)) +#define pfn_to_phys(pfn) (PFN_PHYS(pfn)) + +#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr)))) +#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn))) + +#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr))) +#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page))) + +#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page))) +#define page_to_bus(page) (page_to_phys(page)) +#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr))) + +#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr) + +#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) + +#endif /* __ASSEMBLY__ */ + +#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr))) + +#endif /* __KERNEL__ */ + +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#include <asm-generic/memory_model.h> +#include <asm-generic/getorder.h> + +#endif /* _ASM_SCORE_PAGE_H */ diff --git a/arch/score/include/asm/param.h b/arch/score/include/asm/param.h new file mode 100644 index 000000000000..916b8690b6aa --- /dev/null +++ b/arch/score/include/asm/param.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_PARAM_H +#define _ASM_SCORE_PARAM_H + +#include <asm-generic/param.h> + +#endif /* _ASM_SCORE_PARAM_H */ diff --git a/arch/score/include/asm/pci.h b/arch/score/include/asm/pci.h new file mode 100644 index 000000000000..3f3cfd82549c --- /dev/null +++ b/arch/score/include/asm/pci.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_PCI_H +#define _ASM_SCORE_PCI_H + +#endif /* _ASM_SCORE_PCI_H */ diff --git a/arch/score/include/asm/percpu.h b/arch/score/include/asm/percpu.h new file mode 100644 index 000000000000..e7bd4e05b475 --- /dev/null +++ b/arch/score/include/asm/percpu.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_PERCPU_H +#define _ASM_SCORE_PERCPU_H + +#include <asm-generic/percpu.h> + +#endif /* _ASM_SCORE_PERCPU_H */ diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h new file mode 100644 index 000000000000..28dacc1cbbab --- /dev/null +++ b/arch/score/include/asm/pgalloc.h @@ -0,0 +1,83 @@ +#ifndef _ASM_SCORE_PGALLOC_H +#define _ASM_SCORE_PGALLOC_H + +#include <linux/mm.h> + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, + pte_t *pte) +{ + set_pmd(pmd, __pmd((unsigned long)pte)); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, + pgtable_t pte) +{ + set_pmd(pmd, __pmd((unsigned long)page_address(pte))); +} + +#define pmd_pgtable(pmd) pmd_page(pmd) + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + pgd_t *ret, *init; + + ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER); + if (ret) { + init = pgd_offset(&init_mm, 0UL); + pgd_init((unsigned long)ret); + memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD, + (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); + } + + return ret; +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + free_pages((unsigned long)pgd, PGD_ORDER); +} + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + pte_t *pte; + + pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, + PTE_ORDER); + + return pte; +} + +static inline struct page *pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *pte; + + pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); + if (pte) { + clear_highpage(pte); + pgtable_page_ctor(pte); + } + return pte; +} + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_pages((unsigned long)pte, PTE_ORDER); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t pte) +{ + pgtable_page_dtor(pte); + __free_pages(pte, PTE_ORDER); +} + +#define __pte_free_tlb(tlb, pte) \ +do { \ + pgtable_page_dtor(pte); \ + tlb_remove_page((tlb), pte); \ +} while (0) + +#define check_pgt_cache() do {} while (0) + +#endif /* _ASM_SCORE_PGALLOC_H */ diff --git a/arch/score/include/asm/pgtable-bits.h b/arch/score/include/asm/pgtable-bits.h new file mode 100644 index 000000000000..ca16d357a644 --- /dev/null +++ b/arch/score/include/asm/pgtable-bits.h @@ -0,0 +1,23 @@ +#ifndef _ASM_SCORE_PGTABLE_BITS_H +#define _ASM_SCORE_PGTABLE_BITS_H + +#define _PAGE_ACCESSED (1<<5) /* implemented in software */ +#define _PAGE_READ (1<<6) /* implemented in software */ +#define _PAGE_WRITE (1<<7) /* implemented in software */ +#define _PAGE_PRESENT (1<<9) /* implemented in software */ +#define _PAGE_MODIFIED (1<<10) /* implemented in software */ +#define _PAGE_FILE (1<<10) + +#define _PAGE_GLOBAL (1<<0) +#define _PAGE_VALID (1<<1) +#define _PAGE_SILENT_READ (1<<1) /* synonym */ +#define _PAGE_DIRTY (1<<2) /* Write bit */ +#define _PAGE_SILENT_WRITE (1<<2) +#define _PAGE_CACHE (1<<3) /* cache */ +#define _CACHE_MASK (1<<3) +#define _PAGE_BUFFERABLE (1<<4) /*Fallow Spec. */ + +#define _PAGE_CHG_MASK \ + (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE) + +#endif /* _ASM_SCORE_PGTABLE_BITS_H */ diff --git a/arch/score/include/asm/pgtable.h b/arch/score/include/asm/pgtable.h new file mode 100644 index 000000000000..0f7177a42205 --- /dev/null +++ b/arch/score/include/asm/pgtable.h @@ -0,0 +1,267 @@ +#ifndef _ASM_SCORE_PGTABLE_H +#define _ASM_SCORE_PGTABLE_H + +#include <linux/const.h> +#include <asm-generic/pgtable-nopmd.h> + +#include <asm/fixmap.h> +#include <asm/setup.h> +#include <asm/pgtable-bits.h> + +extern void load_pgd(unsigned long pg_dir); +extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)]; + +/* PGDIR_SHIFT determines what a third-level page table entry can map */ +#define PGDIR_SHIFT 22 +#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE - 1)) + +/* + * Entries per page directory level: we use two-level, so + * we don't really have any PUD/PMD directory physically. + */ +#define PGD_ORDER 0 +#define PTE_ORDER 0 + +#define PTRS_PER_PGD 1024 +#define PTRS_PER_PTE 1024 + +#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE) +#define FIRST_USER_ADDRESS 0 + +#define VMALLOC_START (0xc0000000UL) + +#define PKMAP_BASE (0xfd000000UL) + +#define VMALLOC_END (FIXADDR_START - 2*PAGE_SIZE) + +#define pte_ERROR(e) \ + printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \ + __FILE__, __LINE__, pte_val(e)) +#define pgd_ERROR(e) \ + printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \ + __FILE__, __LINE__, pgd_val(e)) + +/* + * Empty pgd/pmd entries point to the invalid_pte_table. + */ +static inline int pmd_none(pmd_t pmd) +{ + return pmd_val(pmd) == (unsigned long) invalid_pte_table; +} + +#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK) + +static inline int pmd_present(pmd_t pmd) +{ + return pmd_val(pmd) != (unsigned long) invalid_pte_table; +} + +static inline void pmd_clear(pmd_t *pmdp) +{ + pmd_val(*pmdp) = ((unsigned long) invalid_pte_table); +} + +#define pte_page(x) pfn_to_page(pte_pfn(x)) +#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT)) +#define pfn_pte(pfn, prot) \ + __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot)) + +#define __pgd_offset(address) pgd_index(address) +#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) +#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) + +/* to find an entry in a kernel page-table-directory */ +#define pgd_offset_k(address) pgd_offset(&init_mm, address) +#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) + +/* to find an entry in a page-table-directory */ +#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr)) + +/* Find an entry in the third-level page table.. */ +#define __pte_offset(address) \ + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) +#define pte_offset(dir, address) \ + ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) +#define pte_offset_kernel(dir, address) \ + ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) + +#define pte_offset_map(dir, address) \ + ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) +#define pte_offset_map_nested(dir, address) \ + ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) +#define pte_unmap(pte) ((void)(pte)) +#define pte_unmap_nested(pte) ((void)(pte)) + +/* + * Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken, + * split up 30 bits of offset into this range: + */ +#define PTE_FILE_MAX_BITS 30 +#define pte_to_pgoff(_pte) \ + (((_pte).pte & 0x1ff) | (((_pte).pte >> 11) << 9)) +#define pgoff_to_pte(off) \ + ((pte_t) {((off) & 0x1ff) | (((off) >> 9) << 11) | _PAGE_FILE}) +#define __pte_to_swp_entry(pte) \ + ((swp_entry_t) { pte_val(pte)}) +#define __swp_entry_to_pte(x) ((pte_t) {(x).val}) + +#define __P000 __pgprot(0) +#define __P001 __pgprot(0) +#define __P010 __pgprot(0) +#define __P011 __pgprot(0) +#define __P100 __pgprot(0) +#define __P101 __pgprot(0) +#define __P110 __pgprot(0) +#define __P111 __pgprot(0) + +#define __S000 __pgprot(0) +#define __S001 __pgprot(0) +#define __S010 __pgprot(0) +#define __S011 __pgprot(0) +#define __S100 __pgprot(0) +#define __S101 __pgprot(0) +#define __S110 __pgprot(0) +#define __S111 __pgprot(0) + +#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd))) +#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot) +static inline pte_t pte_mkspecial(pte_t pte) { return pte; } + +#define set_pte(pteptr, pteval) (*(pteptr) = pteval) +#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) +#define pte_clear(mm, addr, xp) \ + do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) + +#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ + remap_pfn_range(vma, vaddr, pfn, size, prot) + +#define pgd_present(pgd) (1) /* pages are always present on non MMU */ +#define pgd_none(pgd) (0) +#define pgd_bad(pgd) (0) +#define pgd_clear(pgdp) + +#define kern_addr_valid(addr) (1) +#define pmd_offset(a, b) ((void *) 0) +#define pmd_page_vaddr(pmd) pmd_val(pmd) + +#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL)) +#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT) + +#define pud_offset(pgd, address) ((pud_t *) pgd) + +#define PAGE_NONE __pgprot(0) /* these mean nothing to non MMU */ +#define PAGE_SHARED __pgprot(0) /* these mean nothing to non MMU */ +#define PAGE_COPY __pgprot(0) /* these mean nothing to non MMU */ +#define PAGE_READONLY __pgprot(0) /* these mean nothing to non MMU */ +#define PAGE_KERNEL __pgprot(0) /* these mean nothing to non MMU */ + +#define pgprot_noncached(x) (x) + +#define __swp_type(x) (0) +#define __swp_offset(x) (0) +#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) + +#define ZERO_PAGE(vaddr) ({ BUG(); NULL; }) + +#define swapper_pg_dir ((pgd_t *) NULL) + +#define pgtable_cache_init() do {} while (0) + +#define arch_enter_lazy_cpu_mode() do {} while (0) + +static inline int pte_write(pte_t pte) +{ + return pte_val(pte) & _PAGE_WRITE; +} + +static inline int pte_dirty(pte_t pte) +{ + return pte_val(pte) & _PAGE_MODIFIED; +} + +static inline int pte_young(pte_t pte) +{ + return pte_val(pte) & _PAGE_ACCESSED; +} + +static inline int pte_file(pte_t pte) +{ + return pte_val(pte) & _PAGE_FILE; +} + +#define pte_special(pte) (0) + +static inline pte_t pte_wrprotect(pte_t pte) +{ + pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE); + return pte; +} + +static inline pte_t pte_mkclean(pte_t pte) +{ + pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE); + return pte; +} + +static inline pte_t pte_mkold(pte_t pte) +{ + pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ); + return pte; +} + +static inline pte_t pte_mkwrite(pte_t pte) +{ + pte_val(pte) |= _PAGE_WRITE; + if (pte_val(pte) & _PAGE_MODIFIED) + pte_val(pte) |= _PAGE_SILENT_WRITE; + return pte; +} + +static inline pte_t pte_mkdirty(pte_t pte) +{ + pte_val(pte) |= _PAGE_MODIFIED; + if (pte_val(pte) & _PAGE_WRITE) + pte_val(pte) |= _PAGE_SILENT_WRITE; + return pte; +} + +static inline pte_t pte_mkyoung(pte_t pte) +{ + pte_val(pte) |= _PAGE_ACCESSED; + if (pte_val(pte) & _PAGE_READ) + pte_val(pte) |= _PAGE_SILENT_READ; + return pte; +} + +#define set_pmd(pmdptr, pmdval) \ + do { *(pmdptr) = (pmdval); } while (0) +#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT) + +extern unsigned long pgd_current; +extern void paging_init(void); + +static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) +{ + return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); +} + +extern void __update_tlb(struct vm_area_struct *vma, + unsigned long address, pte_t pte); +extern void __update_cache(struct vm_area_struct *vma, + unsigned long address, pte_t pte); + +static inline void update_mmu_cache(struct vm_area_struct *vma, + unsigned long address, pte_t pte) +{ + __update_tlb(vma, address, pte); + __update_cache(vma, address, pte); +} + +#ifndef __ASSEMBLY__ +#include <asm-generic/pgtable.h> + +void setup_memory(void); +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_SCORE_PGTABLE_H */ diff --git a/arch/score/include/asm/poll.h b/arch/score/include/asm/poll.h new file mode 100644 index 000000000000..18532db02861 --- /dev/null +++ b/arch/score/include/asm/poll.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_POLL_H +#define _ASM_SCORE_POLL_H + +#include <asm-generic/poll.h> + +#endif /* _ASM_SCORE_POLL_H */ diff --git a/arch/score/include/asm/posix_types.h b/arch/score/include/asm/posix_types.h new file mode 100644 index 000000000000..b88acf80048a --- /dev/null +++ b/arch/score/include/asm/posix_types.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_POSIX_TYPES_H +#define _ASM_SCORE_POSIX_TYPES_H + +#include <asm-generic/posix_types.h> + +#endif /* _ASM_SCORE_POSIX_TYPES_H */ diff --git a/arch/score/include/asm/processor.h b/arch/score/include/asm/processor.h new file mode 100644 index 000000000000..7e22f216d771 --- /dev/null +++ b/arch/score/include/asm/processor.h @@ -0,0 +1,106 @@ +#ifndef _ASM_SCORE_PROCESSOR_H +#define _ASM_SCORE_PROCESSOR_H + +#include <linux/cpumask.h> +#include <linux/threads.h> + +#include <asm/segment.h> + +struct task_struct; + +/* + * System setup and hardware flags.. + */ +extern void (*cpu_wait)(void); + +extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); +extern unsigned long thread_saved_pc(struct task_struct *tsk); +extern void start_thread(struct pt_regs *regs, + unsigned long pc, unsigned long sp); +extern unsigned long get_wchan(struct task_struct *p); + +/* + * Return current * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +#define cpu_relax() barrier() +#define release_thread(thread) do {} while (0) +#define prepare_to_copy(tsk) do {} while (0) + +/* + * User space process size: 2GB. This is hardcoded into a few places, + * so don't change it unless you know what you are doing. + */ +#define TASK_SIZE 0x7fff8000UL + +/* + * This decides where the kernel will search for a free chunk of vm + * space during mmap's. + */ +#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE)) + +#ifdef __KERNEL__ +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX TASK_SIZE +#endif + +/* + * If you change thread_struct remember to change the #defines below too! + */ +struct thread_struct { + unsigned long reg0, reg2, reg3; + unsigned long reg12, reg13, reg14, reg15, reg16; + unsigned long reg17, reg18, reg19, reg20, reg21; + + unsigned long cp0_psr; + unsigned long cp0_ema; /* Last user fault */ + unsigned long cp0_badvaddr; /* Last user fault */ + unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ + unsigned long error_code; + unsigned long trap_no; + + unsigned long mflags; + unsigned long reg29; + + unsigned long single_step; + unsigned long ss_nextcnt; + + unsigned long insn1_type; + unsigned long addr1; + unsigned long insn1; + + unsigned long insn2_type; + unsigned long addr2; + unsigned long insn2; + + mm_segment_t current_ds; +}; + +#define INIT_THREAD { \ + .reg0 = 0, \ + .reg2 = 0, \ + .reg3 = 0, \ + .reg12 = 0, \ + .reg13 = 0, \ + .reg14 = 0, \ + .reg15 = 0, \ + .reg16 = 0, \ + .reg17 = 0, \ + .reg18 = 0, \ + .reg19 = 0, \ + .reg20 = 0, \ + .reg21 = 0, \ + .cp0_psr = 0, \ + .error_code = 0, \ + .trap_no = 0, \ +} + +#define kstk_tos(tsk) \ + ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32) +#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1) + +#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc) +#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29]) + +#endif /* _ASM_SCORE_PROCESSOR_H */ diff --git a/arch/score/include/asm/ptrace.h b/arch/score/include/asm/ptrace.h new file mode 100644 index 000000000000..1a4900ac49f3 --- /dev/null +++ b/arch/score/include/asm/ptrace.h @@ -0,0 +1,87 @@ +#ifndef _ASM_SCORE_PTRACE_H +#define _ASM_SCORE_PTRACE_H + +#define PC 32 +#define CONDITION 33 +#define ECR 34 +#define EMA 35 +#define CEH 36 +#define CEL 37 +#define COUNTER 38 +#define LDCR 39 +#define STCR 40 +#define PSR 41 + +#define SINGLESTEP16_INSN 0x7006 +#define SINGLESTEP32_INSN 0x840C8000 +#define BREAKPOINT16_INSN 0x7002 /* work on SPG300 */ +#define BREAKPOINT32_INSN 0x84048000 /* work on SPG300 */ + +/* Define instruction mask */ +#define INSN32_MASK 0x80008000 + +#define J32 0x88008000 /* 1_00010_0000000000_1_000000000000000 */ +#define J32M 0xFC008000 /* 1_11111_0000000000_1_000000000000000 */ + +#define B32 0x90008000 /* 1_00100_0000000000_1_000000000000000 */ +#define B32M 0xFC008000 +#define BL32 0x90008001 /* 1_00100_0000000000_1_000000000000001 */ +#define BL32M B32 +#define BR32 0x80008008 /* 1_00000_0000000000_1_00000000_000100_0 */ +#define BR32M 0xFFE0807E +#define BRL32 0x80008009 /* 1_00000_0000000000_1_00000000_000100_1 */ +#define BRL32M BR32M + +#define B32_SET (J32 | B32 | BL32 | BR32 | BRL32) + +#define J16 0x3000 /* 0_011_....... */ +#define J16M 0xF000 +#define B16 0x4000 /* 0_100_....... */ +#define B16M 0xF000 +#define BR16 0x0004 /* 0_000.......0100 */ +#define BR16M 0xF00F +#define B16_SET (J16 | B16 | BR16) + + +/* + * This struct defines the way the registers are stored on the stack during a + * system call/exception. As usual the registers k0/k1 aren't being saved. + */ +struct pt_regs { + unsigned long pad0[6]; + unsigned long orig_r4; + unsigned long orig_r7; + unsigned long regs[32]; + + unsigned long cel; + unsigned long ceh; + + unsigned long sr0; /* cnt */ + unsigned long sr1; /* lcr */ + unsigned long sr2; /* scr */ + + unsigned long cp0_epc; + unsigned long cp0_ema; + unsigned long cp0_psr; + unsigned long cp0_ecr; + unsigned long cp0_condition; + + long is_syscall; +}; + +#ifdef __KERNEL__ + +/* + * Does the process account for user or for system time? + */ +#define user_mode(regs) ((regs->cp0_psr & 8) == 8) + +#define instruction_pointer(regs) (0) +#define profile_pc(regs) instruction_pointer(regs) + +extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit); +extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *); +extern void clear_single_step(struct task_struct *); +#endif + +#endif /* _ASM_SCORE_PTRACE_H */ diff --git a/arch/score/include/asm/resource.h b/arch/score/include/asm/resource.h new file mode 100644 index 000000000000..9ce22bc7b475 --- /dev/null +++ b/arch/score/include/asm/resource.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_RESOURCE_H +#define _ASM_SCORE_RESOURCE_H + +#include <asm-generic/resource.h> + +#endif /* _ASM_SCORE_RESOURCE_H */ diff --git a/arch/score/include/asm/scatterlist.h b/arch/score/include/asm/scatterlist.h new file mode 100644 index 000000000000..9f533b8362c7 --- /dev/null +++ b/arch/score/include/asm/scatterlist.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SCATTERLIST_H +#define _ASM_SCORE_SCATTERLIST_H + +#include <asm-generic/scatterlist.h> + +#endif /* _ASM_SCORE_SCATTERLIST_H */ diff --git a/arch/score/include/asm/scoreregs.h b/arch/score/include/asm/scoreregs.h new file mode 100644 index 000000000000..d0ad29204518 --- /dev/null +++ b/arch/score/include/asm/scoreregs.h @@ -0,0 +1,51 @@ +#ifndef _ASM_SCORE_SCOREREGS_H +#define _ASM_SCORE_SCOREREGS_H + +#include <linux/linkage.h> + +/* TIMER register */ +#define TIME0BASE 0x96080000 +#define P_TIMER0_CTRL (TIME0BASE + 0x00) +#define P_TIMER0_CPP_CTRL (TIME0BASE + 0x04) +#define P_TIMER0_PRELOAD (TIME0BASE + 0x08) +#define P_TIMER0_CPP_REG (TIME0BASE + 0x0C) +#define P_TIMER0_UPCNT (TIME0BASE + 0x10) + +/* Timer Controller Register */ +/* bit 0 Timer enable */ +#define TMR_DISABLE 0x0000 +#define TMR_ENABLE 0x0001 + +/* bit 1 Interrupt enable */ +#define TMR_IE_DISABLE 0x0000 +#define TMR_IE_ENABLE 0x0002 + +/* bit 2 Output enable */ +#define TMR_OE_DISABLE 0x0004 +#define TMR_OE_ENABLE 0x0000 + +/* bit4 Up/Down counting selection */ +#define TMR_UD_DOWN 0x0000 +#define TMR_UD_UP 0x0010 + +/* bit5 Up/Down counting control selection */ +#define TMR_UDS_UD 0x0000 +#define TMR_UDS_EXTUD 0x0020 + +/* bit6 Time output mode */ +#define TMR_OM_TOGGLE 0x0000 +#define TMR_OM_PILSE 0x0040 + +/* bit 8..9 External input active edge selection */ +#define TMR_ES_PE 0x0000 +#define TMR_ES_NE 0x0100 +#define TMR_ES_BOTH 0x0200 + +/* bit 10..11 Operating mode */ +#define TMR_M_FREE 0x0000 /* free running timer mode */ +#define TMR_M_PERIODIC 0x0400 /* periodic timer mode */ +#define TMR_M_FC 0x0800 /* free running counter mode */ +#define TMR_M_PC 0x0c00 /* periodic counter mode */ + +#define SYSTEM_CLOCK (27*1000000/4) /* 27 MHz */ +#endif /* _ASM_SCORE_SCOREREGS_H */ diff --git a/arch/score/include/asm/sections.h b/arch/score/include/asm/sections.h new file mode 100644 index 000000000000..9441d23af005 --- /dev/null +++ b/arch/score/include/asm/sections.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SECTIONS_H +#define _ASM_SCORE_SECTIONS_H + +#include <asm-generic/sections.h> + +#endif /* _ASM_SCORE_SECTIONS_H */ diff --git a/arch/score/include/asm/segment.h b/arch/score/include/asm/segment.h new file mode 100644 index 000000000000..e16cf6afb495 --- /dev/null +++ b/arch/score/include/asm/segment.h @@ -0,0 +1,21 @@ +#ifndef _ASM_SCORE_SEGMENT_H +#define _ASM_SCORE_SEGMENT_H + +#ifndef __ASSEMBLY__ + +typedef struct { + unsigned long seg; +} mm_segment_t; + +#define KERNEL_DS ((mm_segment_t){0}) +#define USER_DS KERNEL_DS + +# define get_ds() (KERNEL_DS) +# define get_fs() (current_thread_info()->addr_limit) +# define set_fs(x) \ + do { current_thread_info()->addr_limit = (x); } while (0) + +# define segment_eq(a, b) ((a).seg == (b).seg) + +# endif /* __ASSEMBLY__ */ +#endif /* _ASM_SCORE_SEGMENT_H */ diff --git a/arch/score/include/asm/sembuf.h b/arch/score/include/asm/sembuf.h new file mode 100644 index 000000000000..dae5e835ce9e --- /dev/null +++ b/arch/score/include/asm/sembuf.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SEMBUF_H +#define _ASM_SCORE_SEMBUF_H + +#include <asm-generic/sembuf.h> + +#endif /* _ASM_SCORE_SEMBUF_H */ diff --git a/arch/score/include/asm/setup.h b/arch/score/include/asm/setup.h new file mode 100644 index 000000000000..de89eff98dae --- /dev/null +++ b/arch/score/include/asm/setup.h @@ -0,0 +1,40 @@ +#ifndef _ASM_SCORE_SETUP_H +#define _ASM_SCORE_SETUP_H + +#define COMMAND_LINE_SIZE 256 +#define MEM_SIZE 0x2000000 + +#ifdef __KERNEL__ + +extern void pagetable_init(void); +extern void pgd_init(unsigned long page); + +extern void setup_early_printk(void); +extern void cpu_cache_init(void); +extern void tlb_init(void); + +extern void handle_nmi(void); +extern void handle_adelinsn(void); +extern void handle_adedata(void); +extern void handle_ibe(void); +extern void handle_pel(void); +extern void handle_sys(void); +extern void handle_ccu(void); +extern void handle_ri(void); +extern void handle_tr(void); +extern void handle_ades(void); +extern void handle_cee(void); +extern void handle_cpe(void); +extern void handle_dve(void); +extern void handle_dbe(void); +extern void handle_reserved(void); +extern void handle_tlb_refill(void); +extern void handle_tlb_invaild(void); +extern void handle_mod(void); +extern void debug_exception_vector(void); +extern void general_exception_vector(void); +extern void interrupt_exception_vector(void); + +#endif /* __KERNEL__ */ + +#endif /* _ASM_SCORE_SETUP_H */ diff --git a/arch/score/include/asm/shmbuf.h b/arch/score/include/asm/shmbuf.h new file mode 100644 index 000000000000..c85b2429ba21 --- /dev/null +++ b/arch/score/include/asm/shmbuf.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SHMBUF_H +#define _ASM_SCORE_SHMBUF_H + +#include <asm-generic/shmbuf.h> + +#endif /* _ASM_SCORE_SHMBUF_H */ diff --git a/arch/score/include/asm/shmparam.h b/arch/score/include/asm/shmparam.h new file mode 100644 index 000000000000..1d60813141b6 --- /dev/null +++ b/arch/score/include/asm/shmparam.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SHMPARAM_H +#define _ASM_SCORE_SHMPARAM_H + +#include <asm-generic/shmparam.h> + +#endif /* _ASM_SCORE_SHMPARAM_H */ diff --git a/arch/score/include/asm/sigcontext.h b/arch/score/include/asm/sigcontext.h new file mode 100644 index 000000000000..5ffda39ddb90 --- /dev/null +++ b/arch/score/include/asm/sigcontext.h @@ -0,0 +1,22 @@ +#ifndef _ASM_SCORE_SIGCONTEXT_H +#define _ASM_SCORE_SIGCONTEXT_H + +/* + * Keep this struct definition in sync with the sigcontext fragment + * in arch/score/tools/offset.c + */ +struct sigcontext { + unsigned int sc_regmask; + unsigned int sc_psr; + unsigned int sc_condition; + unsigned long sc_pc; + unsigned long sc_regs[32]; + unsigned int sc_ssflags; + unsigned int sc_mdceh; + unsigned int sc_mdcel; + unsigned int sc_ecr; + unsigned long sc_ema; + unsigned long sc_sigset[4]; +}; + +#endif /* _ASM_SCORE_SIGCONTEXT_H */ diff --git a/arch/score/include/asm/siginfo.h b/arch/score/include/asm/siginfo.h new file mode 100644 index 000000000000..87ca35607a28 --- /dev/null +++ b/arch/score/include/asm/siginfo.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SIGINFO_H +#define _ASM_SCORE_SIGINFO_H + +#include <asm-generic/siginfo.h> + +#endif /* _ASM_SCORE_SIGINFO_H */ diff --git a/arch/score/include/asm/signal.h b/arch/score/include/asm/signal.h new file mode 100644 index 000000000000..2605bc06b64f --- /dev/null +++ b/arch/score/include/asm/signal.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SIGNAL_H +#define _ASM_SCORE_SIGNAL_H + +#include <asm-generic/signal.h> + +#endif /* _ASM_SCORE_SIGNAL_H */ diff --git a/arch/score/include/asm/socket.h b/arch/score/include/asm/socket.h new file mode 100644 index 000000000000..612a70e385ba --- /dev/null +++ b/arch/score/include/asm/socket.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SOCKET_H +#define _ASM_SCORE_SOCKET_H + +#include <asm-generic/socket.h> + +#endif /* _ASM_SCORE_SOCKET_H */ diff --git a/arch/score/include/asm/sockios.h b/arch/score/include/asm/sockios.h new file mode 100644 index 000000000000..ba8256480189 --- /dev/null +++ b/arch/score/include/asm/sockios.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SOCKIOS_H +#define _ASM_SCORE_SOCKIOS_H + +#include <asm-generic/sockios.h> + +#endif /* _ASM_SCORE_SOCKIOS_H */ diff --git a/arch/score/include/asm/stat.h b/arch/score/include/asm/stat.h new file mode 100644 index 000000000000..5037055500a2 --- /dev/null +++ b/arch/score/include/asm/stat.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_STAT_H +#define _ASM_SCORE_STAT_H + +#include <asm-generic/stat.h> + +#endif /* _ASM_SCORE_STAT_H */ diff --git a/arch/score/include/asm/statfs.h b/arch/score/include/asm/statfs.h new file mode 100644 index 000000000000..36e41004e996 --- /dev/null +++ b/arch/score/include/asm/statfs.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_STATFS_H +#define _ASM_SCORE_STATFS_H + +#include <asm-generic/statfs.h> + +#endif /* _ASM_SCORE_STATFS_H */ diff --git a/arch/score/include/asm/string.h b/arch/score/include/asm/string.h new file mode 100644 index 000000000000..8a6bf5063aa5 --- /dev/null +++ b/arch/score/include/asm/string.h @@ -0,0 +1,8 @@ +#ifndef _ASM_SCORE_STRING_H +#define _ASM_SCORE_STRING_H + +extern void *memset(void *__s, int __c, size_t __count); +extern void *memcpy(void *__to, __const__ void *__from, size_t __n); +extern void *memmove(void *__dest, __const__ void *__src, size_t __n); + +#endif /* _ASM_SCORE_STRING_H */ diff --git a/arch/score/include/asm/swab.h b/arch/score/include/asm/swab.h new file mode 100644 index 000000000000..fadc3cc6d8a2 --- /dev/null +++ b/arch/score/include/asm/swab.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_SWAB_H +#define _ASM_SCORE_SWAB_H + +#include <asm-generic/swab.h> + +#endif /* _ASM_SCORE_SWAB_H */ diff --git a/arch/score/include/asm/syscalls.h b/arch/score/include/asm/syscalls.h new file mode 100644 index 000000000000..00c28e04fdfc --- /dev/null +++ b/arch/score/include/asm/syscalls.h @@ -0,0 +1,9 @@ +#ifndef _ASM_SCORE_SYSCALLS_H +#define _ASM_SCORE_SYSCALLS_H + +asmlinkage long sys_clone(int flags, unsigned long stack, struct pt_regs *regs); +#define sys_clone sys_clone + +#include <asm-generic/syscalls.h> + +#endif /* _ASM_SCORE_SYSCALLS_H */ diff --git a/arch/score/include/asm/system.h b/arch/score/include/asm/system.h new file mode 100644 index 000000000000..589d5c7e171c --- /dev/null +++ b/arch/score/include/asm/system.h @@ -0,0 +1,90 @@ +#ifndef _ASM_SCORE_SYSTEM_H +#define _ASM_SCORE_SYSTEM_H + +#include <linux/types.h> +#include <linux/irqflags.h> + +struct pt_regs; +struct task_struct; + +extern void *resume(void *last, void *next, void *next_ti); + +#define switch_to(prev, next, last) \ +do { \ + (last) = resume(prev, next, task_thread_info(next)); \ +} while (0) + +#define finish_arch_switch(prev) do {} while (0) + +typedef void (*vi_handler_t)(void); +extern unsigned long arch_align_stack(unsigned long sp); + +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() + +#define read_barrier_depends() do {} while (0) +#define smp_read_barrier_depends() do {} while (0) + +#define set_mb(var, value) do {var = value; wmb(); } while (0) + +#define __HAVE_ARCH_CMPXCHG 1 + +#include <asm-generic/cmpxchg-local.h> + +#ifndef __ASSEMBLY__ + +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((struct __xchg_dummy *)(x)) + +static inline +unsigned long __xchg(volatile unsigned long *m, unsigned long val) +{ + unsigned long retval; + unsigned long flags; + + local_irq_save(flags); + retval = *m; + *m = val; + local_irq_restore(flags); + return retval; +} + +#define xchg(ptr, v) \ + ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \ + (unsigned long)(v))) + +static inline unsigned long __cmpxchg(volatile unsigned long *m, + unsigned long old, unsigned long new) +{ + unsigned long retval; + unsigned long flags; + + local_irq_save(flags); + retval = *m; + if (retval == old) + *m = new; + local_irq_restore(flags); + return retval; +} + +#define cmpxchg(ptr, o, n) \ + ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \ + (unsigned long)(o), \ + (unsigned long)(n))) + +extern void __die(const char *, struct pt_regs *, const char *, + const char *, unsigned long) __attribute__((noreturn)); +extern void __die_if_kernel(const char *, struct pt_regs *, const char *, + const char *, unsigned long); + +#define die(msg, regs) \ + __die(msg, regs, __FILE__ ":", __func__, __LINE__) +#define die_if_kernel(msg, regs) \ + __die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__) + +#endif /* !__ASSEMBLY__ */ +#endif /* _ASM_SCORE_SYSTEM_H */ diff --git a/arch/score/include/asm/termbits.h b/arch/score/include/asm/termbits.h new file mode 100644 index 000000000000..9a95c1412437 --- /dev/null +++ b/arch/score/include/asm/termbits.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_TERMBITS_H +#define _ASM_SCORE_TERMBITS_H + +#include <asm-generic/termbits.h> + +#endif /* _ASM_SCORE_TERMBITS_H */ diff --git a/arch/score/include/asm/termios.h b/arch/score/include/asm/termios.h new file mode 100644 index 000000000000..40984e811ad6 --- /dev/null +++ b/arch/score/include/asm/termios.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_TERMIOS_H +#define _ASM_SCORE_TERMIOS_H + +#include <asm-generic/termios.h> + +#endif /* _ASM_SCORE_TERMIOS_H */ diff --git a/arch/score/include/asm/thread_info.h b/arch/score/include/asm/thread_info.h new file mode 100644 index 000000000000..0af8ca074c8d --- /dev/null +++ b/arch/score/include/asm/thread_info.h @@ -0,0 +1,103 @@ +#ifndef _ASM_SCORE_THREAD_INFO_H +#define _ASM_SCORE_THREAD_INFO_H + +#ifdef __KERNEL__ + +#define KU_MASK 0x08 +#define KU_USER 0x08 +#define KU_KERN 0x00 + +#ifndef __ASSEMBLY__ + +#include <asm/processor.h> + +/* + * low level task data that entry.S needs immediate access to + * - this struct should fit entirely inside of one cache line + * - this struct shares the supervisor stack pages + * - if the contents of this structure are changed, the assembly constants + * must also be changed + */ +struct thread_info { + struct task_struct *task; /* main task structure */ + struct exec_domain *exec_domain; /* execution domain */ + unsigned long flags; /* low level flags */ + unsigned long tp_value; /* thread pointer */ + __u32 cpu; /* current CPU */ + + /* 0 => preemptable, < 0 => BUG */ + int preempt_count; + + /* + * thread address space: + * 0-0xBFFFFFFF for user-thead + * 0-0xFFFFFFFF for kernel-thread + */ + mm_segment_t addr_limit; + struct restart_block restart_block; + struct pt_regs *regs; +}; + +/* + * macros/functions for gaining access to the thread information structure + * + * preempt_count needs to be 1 initially, until the scheduler is functional. + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .exec_domain = &default_exec_domain, \ + .cpu = 0, \ + .preempt_count = 1, \ + .addr_limit = KERNEL_DS, \ + .restart_block = { \ + .fn = do_no_restart_syscall, \ + }, \ +} + +#define init_thread_info (init_thread_union.thread_info) +#define init_stack (init_thread_union.stack) + +/* How to get the thread information struct from C. */ +register struct thread_info *__current_thread_info __asm__("r28"); +#define current_thread_info() __current_thread_info + +/* thread information allocation */ +#define THREAD_SIZE_ORDER (1) +#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) +#define THREAD_MASK (THREAD_SIZE - 1UL) +#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR + +#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL) +#define free_thread_info(info) kfree(info) + +#endif /* !__ASSEMBLY__ */ + +#define PREEMPT_ACTIVE 0x10000000 + +/* + * thread information flags + * - these are process state flags that various assembly files may need to + * access + * - pending work-to-be-done flags are in LSW + * - other flags in MSW + */ +#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ +#define TIF_SIGPENDING 1 /* signal pending */ +#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ +#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */ +#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling + TIF_NEED_RESCHED */ +#define TIF_MEMDIE 18 + +#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) +#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) +#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) +#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) + +#define _TIF_WORK_MASK (0x0000ffff) + +#endif /* __KERNEL__ */ + +#endif /* _ASM_SCORE_THREAD_INFO_H */ diff --git a/arch/score/include/asm/timex.h b/arch/score/include/asm/timex.h new file mode 100644 index 000000000000..a524ae0c5e7b --- /dev/null +++ b/arch/score/include/asm/timex.h @@ -0,0 +1,8 @@ +#ifndef _ASM_SCORE_TIMEX_H +#define _ASM_SCORE_TIMEX_H + +#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */ + +#include <asm-generic/timex.h> + +#endif /* _ASM_SCORE_TIMEX_H */ diff --git a/arch/score/include/asm/tlb.h b/arch/score/include/asm/tlb.h new file mode 100644 index 000000000000..46882ed524e6 --- /dev/null +++ b/arch/score/include/asm/tlb.h @@ -0,0 +1,17 @@ +#ifndef _ASM_SCORE_TLB_H +#define _ASM_SCORE_TLB_H + +/* + * SCORE doesn't need any special per-pte or per-vma handling, except + * we need to flush cache for area to be unmapped. + */ +#define tlb_start_vma(tlb, vma) do {} while (0) +#define tlb_end_vma(tlb, vma) do {} while (0) +#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0) +#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) + +extern void score7_FTLB_refill_Handler(void); + +#include <asm-generic/tlb.h> + +#endif /* _ASM_SCORE_TLB_H */ diff --git a/arch/score/include/asm/tlbflush.h b/arch/score/include/asm/tlbflush.h new file mode 100644 index 000000000000..9cce978367d5 --- /dev/null +++ b/arch/score/include/asm/tlbflush.h @@ -0,0 +1,142 @@ +#ifndef _ASM_SCORE_TLBFLUSH_H +#define _ASM_SCORE_TLBFLUSH_H + +#include <linux/mm.h> + +/* + * TLB flushing: + * + * - flush_tlb_all() flushes all processes TLB entries + * - flush_tlb_mm(mm) flushes the specified mm context TLB entries + * - flush_tlb_page(vma, vmaddr) flushes one page + * - flush_tlb_range(vma, start, end) flushes a range of pages + * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages + */ +extern void local_flush_tlb_all(void); +extern void local_flush_tlb_mm(struct mm_struct *mm); +extern void local_flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +extern void local_flush_tlb_kernel_range(unsigned long start, + unsigned long end); +extern void local_flush_tlb_page(struct vm_area_struct *vma, + unsigned long page); +extern void local_flush_tlb_one(unsigned long vaddr); + +#define flush_tlb_all() local_flush_tlb_all() +#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) +#define flush_tlb_range(vma, vmaddr, end) \ + local_flush_tlb_range(vma, vmaddr, end) +#define flush_tlb_kernel_range(vmaddr, end) \ + local_flush_tlb_kernel_range(vmaddr, end) +#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page) +#define flush_tlb_one(vaddr) local_flush_tlb_one(vaddr) + +#ifndef __ASSEMBLY__ + +static inline unsigned long pevn_get(void) +{ + unsigned long val; + + __asm__ __volatile__( + "mfcr %0, cr11\n" + "nop\nnop\n" + : "=r" (val)); + + return val; +} + +static inline void pevn_set(unsigned long val) +{ + __asm__ __volatile__( + "mtcr %0, cr11\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (val)); +} + +static inline void pectx_set(unsigned long val) +{ + __asm__ __volatile__( + "mtcr %0, cr12\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (val)); +} + +static inline unsigned long pectx_get(void) +{ + unsigned long val; + __asm__ __volatile__( + "mfcr %0, cr12\n" + "nop\nnop\n" + : "=r" (val)); + return val; +} +static inline unsigned long tlblock_get(void) +{ + unsigned long val; + + __asm__ __volatile__( + "mfcr %0, cr7\n" + "nop\nnop\n" + : "=r" (val)); + return val; +} +static inline void tlblock_set(unsigned long val) +{ + __asm__ __volatile__( + "mtcr %0, cr7\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (val)); +} + +static inline void tlbpt_set(unsigned long val) +{ + __asm__ __volatile__( + "mtcr %0, cr8\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (val)); +} + +static inline long tlbpt_get(void) +{ + long val; + + __asm__ __volatile__( + "mfcr %0, cr8\n" + "nop\nnop\n" + : "=r" (val)); + + return val; +} + +static inline void peaddr_set(unsigned long val) +{ + __asm__ __volatile__( + "mtcr %0, cr9\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (val)); +} + +/* TLB operations. */ +static inline void tlb_probe(void) +{ + __asm__ __volatile__("stlb;nop;nop;nop;nop;nop"); +} + +static inline void tlb_read(void) +{ + __asm__ __volatile__("mftlb;nop;nop;nop;nop;nop"); +} + +static inline void tlb_write_indexed(void) +{ + __asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop"); +} + +static inline void tlb_write_random(void) +{ + __asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop"); +} + +#endif /* Not __ASSEMBLY__ */ + +#endif /* _ASM_SCORE_TLBFLUSH_H */ diff --git a/arch/score/include/asm/topology.h b/arch/score/include/asm/topology.h new file mode 100644 index 000000000000..425fba381f88 --- /dev/null +++ b/arch/score/include/asm/topology.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_TOPOLOGY_H +#define _ASM_SCORE_TOPOLOGY_H + +#include <asm-generic/topology.h> + +#endif /* _ASM_SCORE_TOPOLOGY_H */ diff --git a/arch/score/include/asm/types.h b/arch/score/include/asm/types.h new file mode 100644 index 000000000000..2140032778ee --- /dev/null +++ b/arch/score/include/asm/types.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_TYPES_H +#define _ASM_SCORE_TYPES_H + +#include <asm-generic/types.h> + +#endif /* _ASM_SCORE_TYPES_H */ diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h new file mode 100644 index 000000000000..43ce28a1d0fc --- /dev/null +++ b/arch/score/include/asm/uaccess.h @@ -0,0 +1,27 @@ +#ifndef _ASM_SCORE_UACCESS_H +#define _ASM_SCORE_UACCESS_H +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +struct pt_regs; +extern int fixup_exception(struct pt_regs *regs); + +#ifndef __ASSEMBLY__ + +#define __range_ok(addr, size) \ + ((((unsigned long)(addr) >= 0x80000000) \ + || ((unsigned long)(size) > 0x80000000) \ + || (((unsigned long)(addr) + (unsigned long)(size)) > 0x80000000))) + +#define __access_ok(addr, size) \ + (__range_ok((addr), (size)) == 0) + +#include <asm-generic/uaccess.h> + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_SCORE_UACCESS_H */ diff --git a/arch/score/include/asm/unaligned.h b/arch/score/include/asm/unaligned.h new file mode 100644 index 000000000000..2fc06de51c62 --- /dev/null +++ b/arch/score/include/asm/unaligned.h @@ -0,0 +1,6 @@ +#ifndef _ASM_SCORE_UNALIGNED_H +#define _ASM_SCORE_UNALIGNED_H + +#include <asm-generic/unaligned.h> + +#endif /* _ASM_SCORE_UNALIGNED_H */ diff --git a/arch/score/include/asm/unistd.h b/arch/score/include/asm/unistd.h new file mode 100644 index 000000000000..9aa3a159bbf6 --- /dev/null +++ b/arch/score/include/asm/unistd.h @@ -0,0 +1,8 @@ +#ifndef _ASM_SCORE_UNISTD_H +#define _ASM_SCORE_UNISTD_H + +#define __ARCH_HAVE_MMU + +#include <asm-generic/unistd.h> + +#endif /* _ASM_SCORE_UNISTD_H */ diff --git a/arch/score/include/asm/user.h b/arch/score/include/asm/user.h new file mode 100644 index 000000000000..3cf75720fe08 --- /dev/null +++ b/arch/score/include/asm/user.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SCORE_USER_H +#define _ASM_SCORE_USER_H + +#endif /* _ASM_SCORE_USER_H */ diff --git a/arch/score/kernel/Makefile b/arch/score/kernel/Makefile new file mode 100644 index 000000000000..1e5de89d5c73 --- /dev/null +++ b/arch/score/kernel/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for the Linux/SCORE kernel. +# + +extra-y := head.o vmlinux.lds + +obj-y += entry.o init_task.o irq.o process.o ptrace.o \ + setup.o signal.o sys_score.o time.o traps.o + +obj-$(CONFIG_MODULES) += module.o diff --git a/arch/score/kernel/asm-offsets.c b/arch/score/kernel/asm-offsets.c new file mode 100644 index 000000000000..57788f44c6fb --- /dev/null +++ b/arch/score/kernel/asm-offsets.c @@ -0,0 +1,216 @@ +/* + * arch/score/kernel/asm-offsets.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/kbuild.h> +#include <linux/interrupt.h> +#include <linux/mm.h> +#include <linux/sched.h> + +#include <asm-generic/cmpxchg-local.h> + +void output_ptreg_defines(void) +{ + COMMENT("SCORE pt_regs offsets."); + OFFSET(PT_R0, pt_regs, regs[0]); + OFFSET(PT_R1, pt_regs, regs[1]); + OFFSET(PT_R2, pt_regs, regs[2]); + OFFSET(PT_R3, pt_regs, regs[3]); + OFFSET(PT_R4, pt_regs, regs[4]); + OFFSET(PT_R5, pt_regs, regs[5]); + OFFSET(PT_R6, pt_regs, regs[6]); + OFFSET(PT_R7, pt_regs, regs[7]); + OFFSET(PT_R8, pt_regs, regs[8]); + OFFSET(PT_R9, pt_regs, regs[9]); + OFFSET(PT_R10, pt_regs, regs[10]); + OFFSET(PT_R11, pt_regs, regs[11]); + OFFSET(PT_R12, pt_regs, regs[12]); + OFFSET(PT_R13, pt_regs, regs[13]); + OFFSET(PT_R14, pt_regs, regs[14]); + OFFSET(PT_R15, pt_regs, regs[15]); + OFFSET(PT_R16, pt_regs, regs[16]); + OFFSET(PT_R17, pt_regs, regs[17]); + OFFSET(PT_R18, pt_regs, regs[18]); + OFFSET(PT_R19, pt_regs, regs[19]); + OFFSET(PT_R20, pt_regs, regs[20]); + OFFSET(PT_R21, pt_regs, regs[21]); + OFFSET(PT_R22, pt_regs, regs[22]); + OFFSET(PT_R23, pt_regs, regs[23]); + OFFSET(PT_R24, pt_regs, regs[24]); + OFFSET(PT_R25, pt_regs, regs[25]); + OFFSET(PT_R26, pt_regs, regs[26]); + OFFSET(PT_R27, pt_regs, regs[27]); + OFFSET(PT_R28, pt_regs, regs[28]); + OFFSET(PT_R29, pt_regs, regs[29]); + OFFSET(PT_R30, pt_regs, regs[30]); + OFFSET(PT_R31, pt_regs, regs[31]); + + OFFSET(PT_ORIG_R4, pt_regs, orig_r4); + OFFSET(PT_ORIG_R7, pt_regs, orig_r7); + OFFSET(PT_CEL, pt_regs, cel); + OFFSET(PT_CEH, pt_regs, ceh); + OFFSET(PT_SR0, pt_regs, sr0); + OFFSET(PT_SR1, pt_regs, sr1); + OFFSET(PT_SR2, pt_regs, sr2); + OFFSET(PT_EPC, pt_regs, cp0_epc); + OFFSET(PT_EMA, pt_regs, cp0_ema); + OFFSET(PT_PSR, pt_regs, cp0_psr); + OFFSET(PT_ECR, pt_regs, cp0_ecr); + OFFSET(PT_CONDITION, pt_regs, cp0_condition); + OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall); + + DEFINE(PT_SIZE, sizeof(struct pt_regs)); + BLANK(); +} + +void output_task_defines(void) +{ + COMMENT("SCORE task_struct offsets."); + OFFSET(TASK_STATE, task_struct, state); + OFFSET(TASK_THREAD_INFO, task_struct, stack); + OFFSET(TASK_FLAGS, task_struct, flags); + OFFSET(TASK_MM, task_struct, mm); + OFFSET(TASK_PID, task_struct, pid); + DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct)); + BLANK(); +} + +void output_thread_info_defines(void) +{ + COMMENT("SCORE thread_info offsets."); + OFFSET(TI_TASK, thread_info, task); + OFFSET(TI_EXEC_DOMAIN, thread_info, exec_domain); + OFFSET(TI_FLAGS, thread_info, flags); + OFFSET(TI_TP_VALUE, thread_info, tp_value); + OFFSET(TI_CPU, thread_info, cpu); + OFFSET(TI_PRE_COUNT, thread_info, preempt_count); + OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit); + OFFSET(TI_RESTART_BLOCK, thread_info, restart_block); + OFFSET(TI_REGS, thread_info, regs); + DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE); + DEFINE(KERNEL_STACK_MASK, THREAD_MASK); + BLANK(); +} + +void output_thread_defines(void) +{ + COMMENT("SCORE specific thread_struct offsets."); + OFFSET(THREAD_REG0, task_struct, thread.reg0); + OFFSET(THREAD_REG2, task_struct, thread.reg2); + OFFSET(THREAD_REG3, task_struct, thread.reg3); + OFFSET(THREAD_REG12, task_struct, thread.reg12); + OFFSET(THREAD_REG13, task_struct, thread.reg13); + OFFSET(THREAD_REG14, task_struct, thread.reg14); + OFFSET(THREAD_REG15, task_struct, thread.reg15); + OFFSET(THREAD_REG16, task_struct, thread.reg16); + OFFSET(THREAD_REG17, task_struct, thread.reg17); + OFFSET(THREAD_REG18, task_struct, thread.reg18); + OFFSET(THREAD_REG19, task_struct, thread.reg19); + OFFSET(THREAD_REG20, task_struct, thread.reg20); + OFFSET(THREAD_REG21, task_struct, thread.reg21); + OFFSET(THREAD_REG29, task_struct, thread.reg29); + + OFFSET(THREAD_PSR, task_struct, thread.cp0_psr); + OFFSET(THREAD_EMA, task_struct, thread.cp0_ema); + OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr); + OFFSET(THREAD_ECODE, task_struct, thread.error_code); + OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no); + BLANK(); +} + +void output_mm_defines(void) +{ + COMMENT("Size of struct page"); + DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page)); + BLANK(); + COMMENT("Linux mm_struct offsets."); + OFFSET(MM_USERS, mm_struct, mm_users); + OFFSET(MM_PGD, mm_struct, pgd); + OFFSET(MM_CONTEXT, mm_struct, context); + BLANK(); + DEFINE(_PAGE_SIZE, PAGE_SIZE); + DEFINE(_PAGE_SHIFT, PAGE_SHIFT); + BLANK(); + DEFINE(_PGD_T_SIZE, sizeof(pgd_t)); + DEFINE(_PTE_T_SIZE, sizeof(pte_t)); + BLANK(); + DEFINE(_PGD_ORDER, PGD_ORDER); + DEFINE(_PTE_ORDER, PTE_ORDER); + BLANK(); + DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT); + BLANK(); + DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD); + DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE); + BLANK(); +} + +void output_sc_defines(void) +{ + COMMENT("Linux sigcontext offsets."); + OFFSET(SC_REGS, sigcontext, sc_regs); + OFFSET(SC_MDCEH, sigcontext, sc_mdceh); + OFFSET(SC_MDCEL, sigcontext, sc_mdcel); + OFFSET(SC_PC, sigcontext, sc_pc); + OFFSET(SC_PSR, sigcontext, sc_psr); + OFFSET(SC_ECR, sigcontext, sc_ecr); + OFFSET(SC_EMA, sigcontext, sc_ema); + BLANK(); +} + +void output_signal_defined(void) +{ + COMMENT("Linux signal numbers."); + DEFINE(_SIGHUP, SIGHUP); + DEFINE(_SIGINT, SIGINT); + DEFINE(_SIGQUIT, SIGQUIT); + DEFINE(_SIGILL, SIGILL); + DEFINE(_SIGTRAP, SIGTRAP); + DEFINE(_SIGIOT, SIGIOT); + DEFINE(_SIGABRT, SIGABRT); + DEFINE(_SIGFPE, SIGFPE); + DEFINE(_SIGKILL, SIGKILL); + DEFINE(_SIGBUS, SIGBUS); + DEFINE(_SIGSEGV, SIGSEGV); + DEFINE(_SIGSYS, SIGSYS); + DEFINE(_SIGPIPE, SIGPIPE); + DEFINE(_SIGALRM, SIGALRM); + DEFINE(_SIGTERM, SIGTERM); + DEFINE(_SIGUSR1, SIGUSR1); + DEFINE(_SIGUSR2, SIGUSR2); + DEFINE(_SIGCHLD, SIGCHLD); + DEFINE(_SIGPWR, SIGPWR); + DEFINE(_SIGWINCH, SIGWINCH); + DEFINE(_SIGURG, SIGURG); + DEFINE(_SIGIO, SIGIO); + DEFINE(_SIGSTOP, SIGSTOP); + DEFINE(_SIGTSTP, SIGTSTP); + DEFINE(_SIGCONT, SIGCONT); + DEFINE(_SIGTTIN, SIGTTIN); + DEFINE(_SIGTTOU, SIGTTOU); + DEFINE(_SIGVTALRM, SIGVTALRM); + DEFINE(_SIGPROF, SIGPROF); + DEFINE(_SIGXCPU, SIGXCPU); + DEFINE(_SIGXFSZ, SIGXFSZ); + BLANK(); +} diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S new file mode 100644 index 000000000000..6c6b7ea58afa --- /dev/null +++ b/arch/score/kernel/entry.S @@ -0,0 +1,542 @@ +/* + * arch/score/kernel/entry.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/linkage.h> + +#include <asm/asmmacro.h> +#include <asm/thread_info.h> +#include <asm/unistd.h> + +/* + * disable interrupts. + */ +.macro disable_irq + mfcr r8, cr0 + srli r8, r8, 1 + slli r8, r8, 1 + mtcr r8, cr0 + nop + nop + nop + nop + nop +.endm + +/* + * enable interrupts. + */ +.macro enable_irq + mfcr r8, cr0 + ori r8, 1 + mtcr r8, cr0 + nop + nop + nop + nop + nop +.endm + +__INIT +ENTRY(debug_exception_vector) + nop! + nop! + nop! + nop! + nop! + nop! + nop! + nop! + +ENTRY(general_exception_vector) # should move to addr 0x200 + j general_exception + nop! + nop! + nop! + nop! + nop! + nop! + +ENTRY(interrupt_exception_vector) # should move to addr 0x210 + j interrupt_exception + nop! + nop! + nop! + nop! + nop! + nop! + + .section ".text", "ax" + .align 2; +general_exception: + mfcr r31, cr2 + nop + la r30, exception_handlers + andi r31, 0x1f # get ecr.exc_code + slli r31, r31, 2 + add r30, r30, r31 + lw r30, [r30] + br r30 + +interrupt_exception: + SAVE_ALL + mfcr r4, cr2 + nop + lw r16, [r28, TI_REGS] + sw r0, [r28, TI_REGS] + la r3, ret_from_irq + srli r4, r4, 18 # get ecr.ip[7:2], interrupt No. + mv r5, r0 + j do_IRQ + +ENTRY(handle_nmi) # NMI #1 + SAVE_ALL + mv r4, r0 + la r8, nmi_exception_handler + brl r8 + j restore_all + +ENTRY(handle_adelinsn) # AdEL-instruction #2 + SAVE_ALL + mfcr r8, cr6 + nop + nop + sw r8, [r0, PT_EMA] + mv r4, r0 + la r8, do_adelinsn + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_ibe) # BusEL-instruction #5 + SAVE_ALL + mv r4, r0 + la r8, do_be + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_pel) # P-EL #6 + SAVE_ALL + mv r4, r0 + la r8, do_pel + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_ccu) # CCU #8 + SAVE_ALL + mv r4, r0 + la r8, do_ccu + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_ri) # RI #9 + SAVE_ALL + mv r4, r0 + la r8, do_ri + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_tr) # Trap #10 + SAVE_ALL + mv r4, r0 + la r8, do_tr + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_adedata) # AdES-instruction #12 + SAVE_ALL + mfcr r8, cr6 + nop + nop + sw r8, [r0, PT_EMA] + mv r4, r0 + la r8, do_adedata + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_cee) # CeE #16 + SAVE_ALL + mv r4, r0 + la r8, do_cee + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_cpe) # CpE #17 + SAVE_ALL + mv r4, r0 + la r8, do_cpe + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_dbe) # BusEL-data #18 + SAVE_ALL + mv r4, r0 + la r8, do_be + brl r8 + mv r4, r0 + j ret_from_exception + nop + +ENTRY(handle_reserved) # others + SAVE_ALL + mv r4, r0 + la r8, do_reserved + brl r8 + mv r4, r0 + j ret_from_exception + nop + +#ifndef CONFIG_PREEMPT +#define resume_kernel restore_all +#else +#define __ret_from_irq ret_from_exception +#endif + + .align 2 +#ifndef CONFIG_PREEMPT +ENTRY(ret_from_exception) + disable_irq # preempt stop + nop + j __ret_from_irq + nop +#endif + +ENTRY(ret_from_irq) + sw r16, [r28, TI_REGS] + +ENTRY(__ret_from_irq) + lw r8, [r0, PT_PSR] # returning to kernel mode? + andri.c r8, r8, KU_USER + beq resume_kernel + +resume_userspace: + disable_irq + lw r6, [r28, TI_FLAGS] # current->work + li r8, _TIF_WORK_MASK + and.c r8, r8, r6 # ignoring syscall_trace + bne work_pending + nop + j restore_all + nop + +#ifdef CONFIG_PREEMPT +resume_kernel: + disable_irq + lw r8, [r28, TI_PRE_COUNT] + cmpz.c r8 + bne r8, restore_all +need_resched: + lw r8, [r28, TI_FLAGS] + andri.c r9, r8, _TIF_NEED_RESCHED + beq restore_all + lw r8, [r28, PT_PSR] # Interrupts off? + andri.c r8, r8, 1 + beq restore_all + bl preempt_schedule_irq + nop + j need_resched + nop +#endif + +ENTRY(ret_from_fork) + bl schedule_tail # r4=struct task_struct *prev + +ENTRY(syscall_exit) + nop + disable_irq + lw r6, [r28, TI_FLAGS] # current->work + li r8, _TIF_WORK_MASK + and.c r8, r6, r8 + bne syscall_exit_work + +ENTRY(restore_all) # restore full frame + RESTORE_ALL_AND_RET + +work_pending: + andri.c r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS + beq work_notifysig +work_resched: + bl schedule + nop + disable_irq + lw r6, [r28, TI_FLAGS] + li r8, _TIF_WORK_MASK + and.c r8, r6, r8 # is there any work to be done + # other than syscall tracing? + beq restore_all + andri.c r8, r6, _TIF_NEED_RESCHED + bne work_resched + +work_notifysig: + mv r4, r0 + li r5, 0 + bl do_notify_resume # r6 already loaded + nop + j resume_userspace + nop + +ENTRY(syscall_exit_work) + li r8, _TIF_SYSCALL_TRACE + and.c r8, r8, r6 # r6 is preloaded with TI_FLAGS + beq work_pending # trace bit set? + nop + enable_irq + mv r4, r0 + li r5, 1 + bl do_syscall_trace + nop + b resume_userspace + nop + +.macro save_context reg + sw r12, [\reg, THREAD_REG12]; + sw r13, [\reg, THREAD_REG13]; + sw r14, [\reg, THREAD_REG14]; + sw r15, [\reg, THREAD_REG15]; + sw r16, [\reg, THREAD_REG16]; + sw r17, [\reg, THREAD_REG17]; + sw r18, [\reg, THREAD_REG18]; + sw r19, [\reg, THREAD_REG19]; + sw r20, [\reg, THREAD_REG20]; + sw r21, [\reg, THREAD_REG21]; + sw r29, [\reg, THREAD_REG29]; + sw r2, [\reg, THREAD_REG2]; + sw r0, [\reg, THREAD_REG0] +.endm + +.macro restore_context reg + lw r12, [\reg, THREAD_REG12]; + lw r13, [\reg, THREAD_REG13]; + lw r14, [\reg, THREAD_REG14]; + lw r15, [\reg, THREAD_REG15]; + lw r16, [\reg, THREAD_REG16]; + lw r17, [\reg, THREAD_REG17]; + lw r18, [\reg, THREAD_REG18]; + lw r19, [\reg, THREAD_REG19]; + lw r20, [\reg, THREAD_REG20]; + lw r21, [\reg, THREAD_REG21]; + lw r29, [\reg, THREAD_REG29]; + lw r0, [\reg, THREAD_REG0]; + lw r2, [\reg, THREAD_REG2]; + lw r3, [\reg, THREAD_REG3] +.endm + +/* + * task_struct *resume(task_struct *prev, task_struct *next, + * struct thread_info *next_ti) + */ +ENTRY(resume) + mfcr r9, cr0 + nop + nop + sw r9, [r4, THREAD_PSR] + save_context r4 + sw r3, [r4, THREAD_REG3] + + mv r28, r6 + restore_context r5 + mv r8, r6 + addi r8, KERNEL_STACK_SIZE + subi r8, 32 + la r9, kernelsp; + sw r8, [r9]; + + mfcr r9, cr0 + ldis r7, 0x00ff + nop + and r9, r9, r7 + lw r6, [r5, THREAD_PSR] + not r7, r7 + and r6, r6, r7 + or r6, r6, r9 + mtcr r6, cr0 + nop; nop; nop; nop; nop + br r3 + +ENTRY(handle_sys) + SAVE_ALL + enable_irq + + sw r4, [r0, PT_ORIG_R4] #for restart syscall + sw r7, [r0, PT_ORIG_R7] #for restart syscall + sw r27, [r0, PT_IS_SYSCALL] # it from syscall + + lw r9, [r0, PT_EPC] # skip syscall on return + addi r9, 4 + sw r9, [r0, PT_EPC] + + cmpi.c r27, __NR_syscalls # check syscall number + bgtu illegal_syscall + + slli r8, r27, 3 # get syscall routine + la r11, sys_call_table + add r11, r11, r8 + lw r10, [r11] # get syscall entry + lw r11, [r11, 4] # get number of args + + cmpz.c r10 + beq illegal_syscall + + cmpi.c r11, 4 # more than 4 arguments? + bgtu stackargs + +stack_done: + lw r8, [r28, TI_FLAGS] + li r9, _TIF_SYSCALL_TRACE + and.c r8, r8, r9 + bne syscall_trace_entry + + brl r10 # Do The Real system call + + cmpi.c r4, 0 + blt 1f + ldi r8, 0 + sw r8, [r0, PT_R7] + b 2f +1: + cmpi.c r4, -EMAXERRNO-1 # -EMAXERRNO - 1=-1134 + ble 2f + ldi r8, 0x1; + sw r8, [r0, PT_R7] + neg r4, r4 +2: + sw r4, [r0, PT_R4] # save result + +syscall_return: + disable_irq + lw r6, [r28, TI_FLAGS] # current->work + li r8, _TIF_WORK_MASK + and.c r8, r6, r8 + bne syscall_return_work + j restore_all + +syscall_return_work: + j syscall_exit_work + +syscall_trace_entry: + mv r16, r10 + mv r4, r0 + li r5, 0 + bl do_syscall_trace + + mv r8, r16 + lw r4, [r0, PT_R4] # Restore argument registers + lw r5, [r0, PT_R5] + lw r6, [r0, PT_R6] + lw r7, [r0, PT_R7] + brl r8 + + li r8, -EMAXERRNO - 1 # error? + sw r8, [r0, PT_R7] # set error flag + + neg r4, r4 # error + sw r4, [r0, PT_R0] # set flag for syscall + # restarting +1: sw r4, [r0, PT_R2] # result + j syscall_exit + +stackargs: + lw r8, [r0, PT_R0] + andri.c r9, r8, 3 # test whether user sp is align a word + bne bad_stack + subi r11, 5 + slli r9, r11, 2 + add.c r9, r9, r8 + + bmi bad_stack + la r9, 3f # calculate branch address + slli r11, r11, 3 + sub r9, r9, r11 + br r9 + +2: lw r9, [r8, 20] # argument 6 from usp + sw r9, [r0, 20] + +3: lw r9, [r8, 16] # argument 5 from usp + sw r9, [r0, 16] + j stack_done + + .section __ex_table,"a" + .word 2b, bad_stack + .word 3b, bad_stack + .previous + + /* + * The stackpointer for a call with more than 4 arguments is bad. + * We probably should handle this case a bit more drastic. + */ +bad_stack: + neg r27, r27 # error + sw r27, [r0, PT_ORIG_R4] + sw r27, [r0, PT_R4] + ldi r8, 1 # set error flag + sw r8, [r0, PT_R7] + j syscall_return + +illegal_syscall: + ldi r4, -ENOSYS # error + sw r4, [r0, PT_ORIG_R4] + sw r4, [r0, PT_R4] + ldi r9, 1 # set error flag + sw r9, [r0, PT_R7] + j syscall_return + +ENTRY(sys_execve) + mv r4, r0 + la r8, score_execve + br r8 + +ENTRY(sys_clone) + mv r4, r0 + la r8, score_clone + br r8 + +ENTRY(sys_rt_sigreturn) + mv r4, r0 + la r8, score_rt_sigreturn + br r8 + +ENTRY(sys_sigaltstack) + mv r4, r0 + la r8, score_sigaltstack + br r8 diff --git a/arch/score/kernel/head.S b/arch/score/kernel/head.S new file mode 100644 index 000000000000..22a7e3c7292b --- /dev/null +++ b/arch/score/kernel/head.S @@ -0,0 +1,70 @@ +/* + * arch/score/kernel/head.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/init.h> +#include <linux/linkage.h> + +#include <asm/asm-offsets.h> + + .extern start_kernel + .global init_thread_union + .global kernelsp + +__INIT +ENTRY(_stext) + la r30, __bss_start /* initialize BSS segment. */ + la r31, _end + xor r8, r8, r8 + +1: cmp.c r31, r30 + beq 2f + + sw r8, [r30] /* clean memory. */ + addi r30, 4 + b 1b + +2: la r28, init_thread_union /* set kernel stack. */ + mv r0, r28 + addi r0, KERNEL_STACK_SIZE - 32 + la r30, kernelsp + sw r0, [r30] + subi r0, 4*4 + xor r30, r30, r30 + ori r30, 0x02 /* enable MMU. */ + mtcr r30, cr4 + nop + nop + nop + nop + nop + nop + nop + + /* there is no parameter */ + xor r4, r4, r4 + xor r5, r5, r5 + xor r6, r6, r6 + xor r7, r7, r7 + la r30, start_kernel /* jump to init_arch */ + br r30 diff --git a/arch/score/kernel/init_task.c b/arch/score/kernel/init_task.c new file mode 100644 index 000000000000..9eecde00932f --- /dev/null +++ b/arch/score/kernel/init_task.c @@ -0,0 +1,49 @@ +/* + * arch/score/kernel/init_task.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init_task.h> +#include <linux/mqueue.h> + +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); +struct mm_struct init_mm = INIT_MM(init_mm); +EXPORT_SYMBOL(init_mm); + +/* + * Initial thread structure. + * + * We need to make sure that this is THREAD_SIZE aligned due to the + * way process stacks are handled. This is done by having a special + * "init_task" linker map entry.. + */ +union thread_union init_thread_union + __attribute__((__section__(".data.init_task"))) = + { INIT_THREAD_INFO(init_task) }; + +/* + * Initial task structure. + * + * All other task structs will be allocated on slabs in fork.c + */ +struct task_struct init_task = INIT_TASK(init_task); +EXPORT_SYMBOL(init_task); diff --git a/arch/score/kernel/irq.c b/arch/score/kernel/irq.c new file mode 100644 index 000000000000..55474e8e9725 --- /dev/null +++ b/arch/score/kernel/irq.c @@ -0,0 +1,135 @@ +/* + * arch/score/kernel/irq.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/interrupt.h> +#include <linux/kernel_stat.h> +#include <linux/seq_file.h> + +#include <asm/io.h> + +/* + * handles all normal device IRQs + */ +asmlinkage void do_IRQ(int irq) +{ + irq_enter(); + generic_handle_irq(irq); + irq_exit(); +} + +static void score_mask(unsigned int irq_nr) +{ + unsigned int irq_source = 63 - irq_nr; + + if (irq_source < 32) + __raw_writel((__raw_readl((void *)P_INT_MASKL) | \ + (1 << irq_source)), (void *)P_INT_MASKL); + else + __raw_writel((__raw_readl((void *)P_INT_MASKH) | \ + (1 << (irq_source - 32))), (void *)P_INT_MASKH); +} + +static void score_unmask(unsigned int irq_nr) +{ + unsigned int irq_source = 63 - irq_nr; + + if (irq_source < 32) + __raw_writel((__raw_readl((void *)P_INT_MASKL) & \ + ~(1 << irq_source)), (void *)P_INT_MASKL); + else + __raw_writel((__raw_readl((void *)P_INT_MASKH) & \ + ~(1 << (irq_source - 32))), (void *)P_INT_MASKH); +} + +struct irq_chip score_irq_chip = { + .name = "Score7-level", + .mask = score_mask, + .mask_ack = score_mask, + .unmask = score_unmask, +}; + +/* + * initialise the interrupt system + */ +void __init init_IRQ(void) +{ + int index; + unsigned long target_addr; + + for (index = 0; index < NR_IRQS; ++index) + set_irq_chip_and_handler(index, &score_irq_chip, + handle_level_irq); + + for (target_addr = IRQ_VECTOR_BASE_ADDR; + target_addr <= IRQ_VECTOR_END_ADDR; + target_addr += IRQ_VECTOR_SIZE) + memcpy((void *)target_addr, \ + interrupt_exception_vector, IRQ_VECTOR_SIZE); + + __raw_writel(0xffffffff, (void *)P_INT_MASKL); + __raw_writel(0xffffffff, (void *)P_INT_MASKH); + + __asm__ __volatile__( + "mtcr %0, cr3\n\t" + : : "r" (EXCEPTION_VECTOR_BASE_ADDR | \ + VECTOR_ADDRESS_OFFSET_MODE16)); +} + +/* + * Generic, controller-independent functions: + */ +int show_interrupts(struct seq_file *p, void *v) +{ + int i = *(loff_t *)v, cpu; + struct irqaction *action; + unsigned long flags; + + if (i == 0) { + seq_puts(p, " "); + for_each_online_cpu(cpu) + seq_printf(p, "CPU%d ", cpu); + seq_putc(p, '\n'); + } + + if (i < NR_IRQS) { + spin_lock_irqsave(&irq_desc[i].lock, flags); + action = irq_desc[i].action; + if (!action) + goto unlock; + + seq_printf(p, "%3d: ", i); + seq_printf(p, "%10u ", kstat_irqs(i)); + seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-"); + seq_printf(p, " %s", action->name); + for (action = action->next; action; action = action->next) + seq_printf(p, ", %s", action->name); + + seq_putc(p, '\n'); +unlock: + spin_unlock_irqrestore(&irq_desc[i].lock, flags); + } + + return 0; +} diff --git a/arch/score/kernel/module.c b/arch/score/kernel/module.c new file mode 100644 index 000000000000..4ffce7fe1560 --- /dev/null +++ b/arch/score/kernel/module.c @@ -0,0 +1,164 @@ +/* + * arch/score/kernel/module.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/vmalloc.h> + +void *module_alloc(unsigned long size) +{ + return size ? vmalloc(size) : NULL; +} + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); +} + +int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) +{ + return 0; +} + +int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relindex, + struct module *me) +{ + Elf32_Shdr *symsec = sechdrs + symindex; + Elf32_Shdr *relsec = sechdrs + relindex; + Elf32_Shdr *dstsec = sechdrs + relsec->sh_info; + Elf32_Rel *rel = (void *)relsec->sh_addr; + unsigned int i; + + for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) { + unsigned long loc; + Elf32_Sym *sym; + s32 offset; + + offset = ELF32_R_SYM(rel->r_info); + if ((offset < 0) || + (offset > (symsec->sh_size / sizeof(Elf32_Sym)))) { + printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n", + me->name, relindex, i); + return -ENOEXEC; + } + + sym = ((Elf32_Sym *)symsec->sh_addr) + offset; + + if ((rel->r_offset < 0) || + (rel->r_offset > dstsec->sh_size - sizeof(u32))) { + printk(KERN_ERR "%s: out of bounds relocation, " + "section %d reloc %d offset %d size %d\n", + me->name, relindex, i, rel->r_offset, + dstsec->sh_size); + return -ENOEXEC; + } + + loc = dstsec->sh_addr + rel->r_offset; + switch (ELF32_R_TYPE(rel->r_info)) { + case R_SCORE_NONE: + break; + case R_SCORE_ABS32: + *(unsigned long *)loc += sym->st_value; + break; + case R_SCORE_HI16: + break; + case R_SCORE_LO16: { + unsigned long hi16_offset, offset; + unsigned long uvalue; + unsigned long temp, temp_hi; + temp_hi = *((unsigned long *)loc - 1); + temp = *(unsigned long *)loc; + + hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) | + ((temp_hi) & 0x7fff)) >> 1; + offset = ((temp >> 16 & 0x03) << 15) | + ((temp & 0x7fff) >> 1); + offset = (hi16_offset << 16) | (offset & 0xffff); + uvalue = sym->st_value + offset; + hi16_offset = (uvalue >> 16) << 1; + + temp_hi = ((temp_hi) & (~(0x37fff))) | + (hi16_offset & 0x7fff) | + ((hi16_offset << 1) & 0x30000); + *((unsigned long *)loc - 1) = temp_hi; + + offset = (uvalue & 0xffff) << 1; + temp = (temp & (~(0x37fff))) | (offset & 0x7fff) | + ((offset << 1) & 0x30000); + *(unsigned long *)loc = temp; + break; + } + case R_SCORE_24: { + unsigned long hi16_offset, offset; + unsigned long uvalue; + unsigned long temp; + + temp = *(unsigned long *)loc; + offset = (temp & 0x03FF7FFE); + hi16_offset = (offset & 0xFFFF0000); + offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2; + + uvalue = (sym->st_value + offset) >> 1; + uvalue = uvalue & 0x00ffffff; + + temp = (temp & 0xfc008001) | + ((uvalue << 2) & 0x3ff0000) | + ((uvalue & 0x3fff) << 1); + *(unsigned long *)loc = temp; + break; + } + default: + printk(KERN_ERR "%s: unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rel->r_info)); + return -ENOEXEC; + } + } + + return 0; +} + +int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relsec, + struct module *me) +{ + return 0; +} + +/* Given an address, look for it in the module exception tables. */ +const struct exception_table_entry *search_module_dbetables(unsigned long addr) +{ + return 0; +} + +/* Put in dbe list if necessary. */ +int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, + struct module *me) +{ + return 0; +} + +void module_arch_cleanup(struct module *mod) {} diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c new file mode 100644 index 000000000000..aaa3085251fa --- /dev/null +++ b/arch/score/kernel/process.c @@ -0,0 +1,165 @@ +/* + * arch/score/kernel/process.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> + +void (*pm_power_off)(void); +EXPORT_SYMBOL(pm_power_off); + +/* If or when software machine-restart is implemented, add code here. */ +void machine_restart(char *command) {} + +/* If or when software machine-halt is implemented, add code here. */ +void machine_halt(void) {} + +/* If or when software machine-power-off is implemented, add code here. */ +void machine_power_off(void) {} + +/* + * The idle thread. There's no useful work to be + * done, so just try to conserve power and have a + * low exit latency (ie sit in a loop waiting for + * somebody to say that they'd like to reschedule) + */ +void __noreturn cpu_idle(void) +{ + /* endless idle loop with no priority at all */ + while (1) { + while (!need_resched()) + barrier(); + + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } +} + +asmlinkage void ret_from_fork(void); + +void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp) +{ + unsigned long status; + + /* New thread loses kernel privileges. */ + status = regs->cp0_psr & ~(KU_MASK); + status |= KU_USER; + regs->cp0_psr = status; + regs->cp0_epc = pc; + regs->regs[0] = sp; +} + +void exit_thread(void) {} + +/* + * When a process does an "exec", machine state like FPU and debug + * registers need to be reset. This is a hook function for that. + * Currently we don't have any such state to reset, so this is empty. + */ +void flush_thread(void) {} + +/* + * set up the kernel stack and exception frames for a new process + */ +int copy_thread(unsigned long clone_flags, unsigned long usp, + unsigned long unused, + struct task_struct *p, struct pt_regs *regs) +{ + struct thread_info *ti = task_thread_info(p); + struct pt_regs *childregs = task_pt_regs(p); + + p->set_child_tid = NULL; + p->clear_child_tid = NULL; + + *childregs = *regs; + childregs->regs[7] = 0; /* Clear error flag */ + childregs->regs[4] = 0; /* Child gets zero as return value */ + regs->regs[4] = p->pid; + + if (childregs->cp0_psr & 0x8) { /* test kernel fork or user fork */ + childregs->regs[0] = usp; /* user fork */ + } else { + childregs->regs[28] = (unsigned long) ti; /* kernel fork */ + childregs->regs[0] = (unsigned long) childregs; + } + + p->thread.reg0 = (unsigned long) childregs; + p->thread.reg3 = (unsigned long) ret_from_fork; + p->thread.cp0_psr = 0; + + return 0; +} + +/* Fill in the fpu structure for a core dump. */ +int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r) +{ + return 1; +} + +static void __noreturn +kernel_thread_helper(void *unused0, int (*fn)(void *), + void *arg, void *unused1) +{ + do_exit(fn(arg)); +} + +/* + * Create a kernel thread. + */ +long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) +{ + struct pt_regs regs; + + memset(®s, 0, sizeof(regs)); + + regs.regs[6] = (unsigned long) arg; + regs.regs[5] = (unsigned long) fn; + regs.cp0_epc = (unsigned long) kernel_thread_helper; + regs.cp0_psr = (regs.cp0_psr & ~(0x1|0x4|0x8)) | \ + ((regs.cp0_psr & 0x3) << 2); + + return do_fork(flags | CLONE_VM | CLONE_UNTRACED, \ + 0, ®s, 0, NULL, NULL); +} + +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + return task_pt_regs(tsk)->cp0_epc; +} + +unsigned long get_wchan(struct task_struct *task) +{ + if (!task || task == current || task->state == TASK_RUNNING) + return 0; + + if (!task_stack_page(task)) + return 0; + + return task_pt_regs(task)->cp0_epc; +} + +unsigned long arch_align_stack(unsigned long sp) +{ + return sp; +} diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c new file mode 100644 index 000000000000..8fe7209355aa --- /dev/null +++ b/arch/score/kernel/ptrace.c @@ -0,0 +1,465 @@ +/* + * arch/score/kernel/ptrace.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/kernel.h> +#include <linux/ptrace.h> + +#include <asm/uaccess.h> + +static int is_16bitinsn(unsigned long insn) +{ + if ((insn & INSN32_MASK) == INSN32_MASK) + return 0; + else + return 1; +} + +int +read_tsk_long(struct task_struct *child, + unsigned long addr, unsigned long *res) +{ + int copied; + + copied = access_process_vm(child, addr, res, sizeof(*res), 0); + + return copied != sizeof(*res) ? -EIO : 0; +} + +int +read_tsk_short(struct task_struct *child, + unsigned long addr, unsigned short *res) +{ + int copied; + + copied = access_process_vm(child, addr, res, sizeof(*res), 0); + + return copied != sizeof(*res) ? -EIO : 0; +} + +static int +write_tsk_short(struct task_struct *child, + unsigned long addr, unsigned short val) +{ + int copied; + + copied = access_process_vm(child, addr, &val, sizeof(val), 1); + + return copied != sizeof(val) ? -EIO : 0; +} + +static int +write_tsk_long(struct task_struct *child, + unsigned long addr, unsigned long val) +{ + int copied; + + copied = access_process_vm(child, addr, &val, sizeof(val), 1); + + return copied != sizeof(val) ? -EIO : 0; +} + +void set_single_step(struct task_struct *child) +{ + /* far_epc is the target of branch */ + unsigned int epc, far_epc = 0; + unsigned long epc_insn, far_epc_insn; + int ninsn_type; /* next insn type 0=16b, 1=32b */ + unsigned int tmp, tmp2; + struct pt_regs *regs = task_pt_regs(child); + child->thread.single_step = 1; + child->thread.ss_nextcnt = 1; + epc = regs->cp0_epc; + + read_tsk_long(child, epc, &epc_insn); + + if (is_16bitinsn(epc_insn)) { + if ((epc_insn & J16M) == J16) { + tmp = epc_insn & 0xFFE; + epc = (epc & 0xFFFFF000) | tmp; + } else if ((epc_insn & B16M) == B16) { + child->thread.ss_nextcnt = 2; + tmp = (epc_insn & 0xFF) << 1; + tmp = tmp << 23; + tmp = (unsigned int)((int) tmp >> 23); + far_epc = epc + tmp; + epc += 2; + } else if ((epc_insn & BR16M) == BR16) { + child->thread.ss_nextcnt = 2; + tmp = (epc_insn >> 4) & 0xF; + far_epc = regs->regs[tmp]; + epc += 2; + } else + epc += 2; + } else { + if ((epc_insn & J32M) == J32) { + tmp = epc_insn & 0x03FFFFFE; + tmp2 = tmp & 0x7FFF; + tmp = (((tmp >> 16) & 0x3FF) << 15) | tmp2; + epc = (epc & 0xFFC00000) | tmp; + } else if ((epc_insn & B32M) == B32) { + child->thread.ss_nextcnt = 2; + tmp = epc_insn & 0x03FFFFFE; /* discard LK bit */ + tmp2 = tmp & 0x3FF; + tmp = (((tmp >> 16) & 0x3FF) << 10) | tmp2; /* 20bit */ + tmp = tmp << 12; + tmp = (unsigned int)((int) tmp >> 12); + far_epc = epc + tmp; + epc += 4; + } else if ((epc_insn & BR32M) == BR32) { + child->thread.ss_nextcnt = 2; + tmp = (epc_insn >> 16) & 0x1F; + far_epc = regs->regs[tmp]; + epc += 4; + } else + epc += 4; + } + + if (child->thread.ss_nextcnt == 1) { + read_tsk_long(child, epc, &epc_insn); + + if (is_16bitinsn(epc_insn)) { + write_tsk_short(child, epc, SINGLESTEP16_INSN); + ninsn_type = 0; + } else { + write_tsk_long(child, epc, SINGLESTEP32_INSN); + ninsn_type = 1; + } + + if (ninsn_type == 0) { /* 16bits */ + child->thread.insn1_type = 0; + child->thread.addr1 = epc; + /* the insn may have 32bit data */ + child->thread.insn1 = (short)epc_insn; + } else { + child->thread.insn1_type = 1; + child->thread.addr1 = epc; + child->thread.insn1 = epc_insn; + } + } else { + /* branch! have two target child->thread.ss_nextcnt=2 */ + read_tsk_long(child, epc, &epc_insn); + read_tsk_long(child, far_epc, &far_epc_insn); + if (is_16bitinsn(epc_insn)) { + write_tsk_short(child, epc, SINGLESTEP16_INSN); + ninsn_type = 0; + } else { + write_tsk_long(child, epc, SINGLESTEP32_INSN); + ninsn_type = 1; + } + + if (ninsn_type == 0) { /* 16bits */ + child->thread.insn1_type = 0; + child->thread.addr1 = epc; + /* the insn may have 32bit data */ + child->thread.insn1 = (short)epc_insn; + } else { + child->thread.insn1_type = 1; + child->thread.addr1 = epc; + child->thread.insn1 = epc_insn; + } + + if (is_16bitinsn(far_epc_insn)) { + write_tsk_short(child, far_epc, SINGLESTEP16_INSN); + ninsn_type = 0; + } else { + write_tsk_long(child, far_epc, SINGLESTEP32_INSN); + ninsn_type = 1; + } + + if (ninsn_type == 0) { /* 16bits */ + child->thread.insn2_type = 0; + child->thread.addr2 = far_epc; + /* the insn may have 32bit data */ + child->thread.insn2 = (short)far_epc_insn; + } else { + child->thread.insn2_type = 1; + child->thread.addr2 = far_epc; + child->thread.insn2 = far_epc_insn; + } + } +} + +void clear_single_step(struct task_struct *child) +{ + if (child->thread.insn1_type == 0) + write_tsk_short(child, child->thread.addr1, + child->thread.insn1); + + if (child->thread.insn1_type == 1) + write_tsk_long(child, child->thread.addr1, + child->thread.insn1); + + if (child->thread.ss_nextcnt == 2) { /* branch */ + if (child->thread.insn1_type == 0) + write_tsk_short(child, child->thread.addr1, + child->thread.insn1); + if (child->thread.insn1_type == 1) + write_tsk_long(child, child->thread.addr1, + child->thread.insn1); + if (child->thread.insn2_type == 0) + write_tsk_short(child, child->thread.addr2, + child->thread.insn2); + if (child->thread.insn2_type == 1) + write_tsk_long(child, child->thread.addr2, + child->thread.insn2); + } + + child->thread.single_step = 0; + child->thread.ss_nextcnt = 0; +} + + +void ptrace_disable(struct task_struct *child) {} + +long +arch_ptrace(struct task_struct *child, long request, long addr, long data) +{ + int ret; + + if (request == PTRACE_TRACEME) { + /* are we already being traced? */ + if (current->ptrace & PT_PTRACED) + return -EPERM; + + /* set the ptrace bit in the process flags. */ + current->ptrace |= PT_PTRACED; + return 0; + } + + ret = -ESRCH; + if (!child) + return ret; + + ret = -EPERM; + + if (request == PTRACE_ATTACH) { + ret = ptrace_attach(child); + return ret; + } + + ret = ptrace_check_attach(child, request == PTRACE_KILL); + if (ret < 0) + return ret; + + switch (request) { + case PTRACE_PEEKTEXT: /* read word at location addr. */ + case PTRACE_PEEKDATA: { + unsigned long tmp; + int copied; + + copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); + ret = -EIO; + if (copied != sizeof(tmp)) + break; + + ret = put_user(tmp, (unsigned long *) data); + return ret; + } + + /* Read the word at location addr in the USER area. */ + case PTRACE_PEEKUSR: { + struct pt_regs *regs; + unsigned long tmp; + + regs = task_pt_regs(child); + + tmp = 0; /* Default return value. */ + switch (addr) { + case 0 ... 31: + tmp = regs->regs[addr]; + break; + case PC: + tmp = regs->cp0_epc; + break; + case ECR: + tmp = regs->cp0_ecr; + break; + case EMA: + tmp = regs->cp0_ema; + break; + case CEH: + tmp = regs->ceh; + break; + case CEL: + tmp = regs->cel; + break; + case CONDITION: + tmp = regs->cp0_condition; + break; + case PSR: + tmp = regs->cp0_psr; + break; + case COUNTER: + tmp = regs->sr0; + break; + case LDCR: + tmp = regs->sr1; + break; + case STCR: + tmp = regs->sr2; + break; + default: + tmp = 0; + return -EIO; + } + + ret = put_user(tmp, (unsigned long *) data); + return ret; + } + + case PTRACE_POKETEXT: /* write the word at location addr. */ + case PTRACE_POKEDATA: + ret = 0; + if (access_process_vm(child, addr, &data, sizeof(data), 1) + == sizeof(data)) + break; + ret = -EIO; + return ret; + + case PTRACE_POKEUSR: { + struct pt_regs *regs; + ret = 0; + regs = task_pt_regs(child); + + switch (addr) { + case 0 ... 31: + regs->regs[addr] = data; + break; + case PC: + regs->cp0_epc = data; + break; + case CEH: + regs->ceh = data; + break; + case CEL: + regs->cel = data; + break; + case CONDITION: + regs->cp0_condition = data; + break; + case PSR: + case COUNTER: + case STCR: + case LDCR: + break; /* user can't write the reg */ + default: + /* The rest are not allowed. */ + ret = -EIO; + break; + } + break; + } + + case PTRACE_SYSCALL: /* continue and stop at next + (return from) syscall. */ + case PTRACE_CONT: { /* restart after signal. */ + ret = -EIO; + if (!valid_signal(data)) + break; + if (request == PTRACE_SYSCALL) + set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + else + clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + + child->exit_code = data; + wake_up_process(child); + ret = 0; + break; + } + + /* + * make the child exit. Best I can do is send it a sigkill. + * perhaps it should be put in the status that it wants to + * exit. + */ + case PTRACE_KILL: + ret = 0; + if (child->state == EXIT_ZOMBIE) /* already dead. */ + break; + child->exit_code = SIGKILL; + clear_single_step(child); + wake_up_process(child); + break; + + case PTRACE_SINGLESTEP: { /* set the trap flag. */ + ret = -EIO; + if ((unsigned long) data > _NSIG) + break; + clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + set_single_step(child); + child->exit_code = data; + /* give it a chance to run. */ + wake_up_process(child); + ret = 0; + break; + } + + case PTRACE_DETACH: /* detach a process that was attached. */ + ret = ptrace_detach(child, data); + break; + + case PTRACE_SETOPTIONS: + if (data & PTRACE_O_TRACESYSGOOD) + child->ptrace |= PT_TRACESYSGOOD; + else + child->ptrace &= ~PT_TRACESYSGOOD; + ret = 0; + break; + + default: + ret = -EIO; + break; + } + + return ret; +} + +/* + * Notification of system call entry/exit + * - triggered by current->work.syscall_trace + */ +asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) +{ + if (!(current->ptrace & PT_PTRACED)) + return; + + if (!test_thread_flag(TIF_SYSCALL_TRACE)) + return; + + /* The 0x80 provides a way for the tracing parent to distinguish + between a syscall stop and SIGTRAP delivery. */ + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ? + 0x80 : 0)); + + /* + * this isn't the same as continuing with a signal, but it will do + * for normal use. strace only continues with a signal if the + * stopping signal is not SIGTRAP. -brl + */ + if (current->exit_code) { + send_sig(current->exit_code, current, 1); + current->exit_code = 0; + } +} diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c new file mode 100644 index 000000000000..a172ce170f62 --- /dev/null +++ b/arch/score/kernel/setup.c @@ -0,0 +1,157 @@ +/* + * arch/score/kernel/setup.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/bootmem.h> +#include <linux/initrd.h> +#include <linux/ioport.h> +#include <linux/seq_file.h> +#include <linux/screen_info.h> + +#include <asm-generic/sections.h> + +struct screen_info screen_info; +unsigned long kernelsp; + +static char command_line[COMMAND_LINE_SIZE]; +static struct resource code_resource = { .name = "Kernel code",}; +static struct resource data_resource = { .name = "Kernel data",}; + +static void __init bootmem_init(void) +{ + unsigned long reserved_end, bootmap_size; + unsigned long size = initrd_end - initrd_start; + + reserved_end = (unsigned long)_end; + + min_low_pfn = 0; + max_low_pfn = MEM_SIZE / PAGE_SIZE; + + /* Initialize the boot-time allocator with low memory only. */ + bootmap_size = init_bootmem_node(NODE_DATA(0), reserved_end, + min_low_pfn, max_low_pfn); + add_active_range(0, min_low_pfn, max_low_pfn); + + free_bootmem(PFN_PHYS(reserved_end), + (max_low_pfn - reserved_end) << PAGE_SHIFT); + memory_present(0, reserved_end, max_low_pfn); + + /* Reserve space for the bootmem bitmap. */ + reserve_bootmem(PFN_PHYS(reserved_end), bootmap_size, BOOTMEM_DEFAULT); + + if (size == 0) { + printk(KERN_INFO "Initrd not found or empty"); + goto disable; + } + + if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) { + printk(KERN_ERR "Initrd extends beyond end of memory"); + goto disable; + } + + /* Reserve space for the initrd bitmap. */ + reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT); + initrd_below_start_ok = 1; + + pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n", + initrd_start, size); + return; +disable: + printk(KERN_CONT " - disabling initrd\n"); + initrd_start = 0; + initrd_end = 0; +} + +static void __init resource_init(void) +{ + struct resource *res; + + code_resource.start = (unsigned long)_text; + code_resource.end = (unsigned long)_etext - 1; + data_resource.start = (unsigned long)_etext; + data_resource.end = (unsigned long)_edata - 1; + + res = alloc_bootmem(sizeof(struct resource)); + res->name = "System RAM"; + res->start = 0; + res->end = MEM_SIZE - 1; + res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; + request_resource(&iomem_resource, res); + + request_resource(res, &code_resource); + request_resource(res, &data_resource); +} + +void __init setup_arch(char **cmdline_p) +{ + randomize_va_space = 0; + *cmdline_p = command_line; + + cpu_cache_init(); + tlb_init(); + bootmem_init(); + paging_init(); + resource_init(); +} + +static int show_cpuinfo(struct seq_file *m, void *v) +{ + unsigned long n = (unsigned long) v - 1; + + seq_printf(m, "processor\t\t: %ld\n", n); + seq_printf(m, "\n"); + + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + unsigned long i = *pos; + + return i < 1 ? (void *) (i + 1) : NULL; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; + +static int __init topology_init(void) +{ + return 0; +} + +subsys_initcall(topology_init); diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c new file mode 100644 index 000000000000..b4ed1b3f8072 --- /dev/null +++ b/arch/score/kernel/signal.c @@ -0,0 +1,355 @@ +/* + * arch/score/kernel/signal.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/errno.h> +#include <linux/signal.h> +#include <linux/unistd.h> +#include <linux/uaccess.h> +#include <asm-generic/ucontext.h> + +#include <asm/cacheflush.h> + +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + +struct rt_sigframe { + u32 rs_ass[4]; /* argument save space */ + u32 rs_code[2]; /* signal trampoline */ + struct siginfo rs_info; + struct ucontext rs_uc; +}; + +int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc) +{ + int err = 0; + unsigned long reg; + + reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc); + err |= __put_user(regs->cp0_psr, &sc->sc_psr); + err |= __put_user(regs->cp0_condition, &sc->sc_condition); + + +#define save_gp_reg(i) { \ + reg = regs->regs[i]; \ + err |= __put_user(reg, &sc->sc_regs[i]); \ +} while (0) + save_gp_reg(0); save_gp_reg(1); save_gp_reg(2); + save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); + save_gp_reg(6); save_gp_reg(7); save_gp_reg(8); + save_gp_reg(9); save_gp_reg(10); save_gp_reg(11); + save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); + save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); + save_gp_reg(18); save_gp_reg(19); save_gp_reg(20); + save_gp_reg(21); save_gp_reg(22); save_gp_reg(23); + save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); + save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); +#undef save_gp_reg + + reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh); + reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel); + err |= __put_user(regs->cp0_ecr, &sc->sc_ecr); + err |= __put_user(regs->cp0_ema, &sc->sc_ema); + + return err; +} + +int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc) +{ + int err = 0; + u32 reg; + + err |= __get_user(regs->cp0_epc, &sc->sc_pc); + err |= __get_user(regs->cp0_condition, &sc->sc_condition); + + err |= __get_user(reg, &sc->sc_mdceh); + regs->ceh = (int) reg; + err |= __get_user(reg, &sc->sc_mdcel); + regs->cel = (int) reg; + + err |= __get_user(reg, &sc->sc_psr); + regs->cp0_psr = (int) reg; + err |= __get_user(reg, &sc->sc_ecr); + regs->cp0_ecr = (int) reg; + err |= __get_user(reg, &sc->sc_ema); + regs->cp0_ema = (int) reg; + +#define restore_gp_reg(i) do { \ + err |= __get_user(reg, &sc->sc_regs[i]); \ + regs->regs[i] = reg; \ +} while (0) + restore_gp_reg(0); restore_gp_reg(1); restore_gp_reg(2); + restore_gp_reg(3); restore_gp_reg(4); restore_gp_reg(5); + restore_gp_reg(6); restore_gp_reg(7); restore_gp_reg(8); + restore_gp_reg(9); restore_gp_reg(10); restore_gp_reg(11); + restore_gp_reg(12); restore_gp_reg(13); restore_gp_reg(14); + restore_gp_reg(15); restore_gp_reg(16); restore_gp_reg(17); + restore_gp_reg(18); restore_gp_reg(19); restore_gp_reg(20); + restore_gp_reg(21); restore_gp_reg(22); restore_gp_reg(23); + restore_gp_reg(24); restore_gp_reg(25); restore_gp_reg(26); + restore_gp_reg(27); restore_gp_reg(28); restore_gp_reg(29); +#undef restore_gp_reg + + return err; +} + +/* + * Determine which stack to use.. + */ +void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, + size_t frame_size) +{ + unsigned long sp; + + /* Default to using normal stack */ + sp = regs->regs[0]; + sp -= 32; + + /* This is the X/Open sanctioned signal stack switching. */ + if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp))) + sp = current->sas_ss_sp + current->sas_ss_size; + + return (void *)((sp - frame_size) & ~7); +} + +asmlinkage int score_sigaltstack(struct pt_regs *regs) +{ + const stack_t *uss = (const stack_t *) regs->regs[4]; + stack_t *uoss = (stack_t *) regs->regs[5]; + unsigned long usp = regs->regs[0]; + + return do_sigaltstack(uss, uoss, usp); +} + +asmlinkage void score_rt_sigreturn(struct pt_regs *regs) +{ + struct rt_sigframe __user *frame; + sigset_t set; + stack_t st; + int sig; + + frame = (struct rt_sigframe __user *) regs->regs[0]; + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + spin_lock_irq(¤t->sighand->siglock); + current->blocked = set; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext); + if (sig < 0) + goto badframe; + else if (sig) + force_sig(sig, current); + + if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st))) + goto badframe; + + /* It is more difficult to avoid calling this function than to + call it and ignore errors. */ + do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]); + + __asm__ __volatile__( + "mv\tr0, %0\n\t" + "la\tr8, syscall_exit\n\t" + "br\tr8\n\t" + : : "r" (regs) : "r8"); + +badframe: + force_sig(SIGSEGV, current); +} + +int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, + int signr, sigset_t *set, siginfo_t *info) +{ + struct rt_sigframe *frame; + int err = 0; + + frame = get_sigframe(ka, regs, sizeof(*frame)); + if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) + goto give_sigsegv; + + /* + * Set up the return code ... + * + * li v0, __NR_rt_sigreturn + * syscall + */ + err |= __put_user(0x87788000 + __NR_rt_sigreturn*2, + frame->rs_code + 0); + err |= __put_user(0x80008002, frame->rs_code + 1); + flush_cache_sigtramp((unsigned long) frame->rs_code); + + err |= copy_siginfo_to_user(&frame->rs_info, info); + err |= __put_user(0, &frame->rs_uc.uc_flags); + err |= __put_user(0, &frame->rs_uc.uc_link); + err |= __put_user((void *)current->sas_ss_sp, + &frame->rs_uc.uc_stack.ss_sp); + err |= __put_user(sas_ss_flags(regs->regs[0]), + &frame->rs_uc.uc_stack.ss_flags); + err |= __put_user(current->sas_ss_size, + &frame->rs_uc.uc_stack.ss_size); + err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext); + err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set)); + + if (err) + goto give_sigsegv; + + regs->regs[0] = (unsigned long) frame; + regs->regs[3] = (unsigned long) frame->rs_code; + regs->regs[4] = signr; + regs->regs[5] = (unsigned long) &frame->rs_info; + regs->regs[6] = (unsigned long) &frame->rs_uc; + regs->regs[29] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = (unsigned long) ka->sa.sa_handler; + + return 0; + +give_sigsegv: + if (signr == SIGSEGV) + ka->sa.sa_handler = SIG_DFL; + force_sig(SIGSEGV, current); + return -EFAULT; +} + +int handle_signal(unsigned long sig, siginfo_t *info, + struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs) +{ + int ret; + + if (regs->is_syscall) { + switch (regs->regs[4]) { + case ERESTART_RESTARTBLOCK: + case ERESTARTNOHAND: + regs->regs[4] = EINTR; + break; + case ERESTARTSYS: + if (!(ka->sa.sa_flags & SA_RESTART)) { + regs->regs[4] = EINTR; + break; + } + case ERESTARTNOINTR: + regs->regs[4] = regs->orig_r4; + regs->regs[7] = regs->orig_r7; + regs->cp0_epc -= 8; + } + + regs->is_syscall = 0; + } + + /* + * Set up the stack frame + */ + ret = setup_rt_frame(ka, regs, sig, oldset, info); + + spin_lock_irq(¤t->sighand->siglock); + sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); + if (!(ka->sa.sa_flags & SA_NODEFER)) + sigaddset(¤t->blocked, sig); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + return ret; +} + +asmlinkage void do_signal(struct pt_regs *regs) +{ + struct k_sigaction ka; + sigset_t *oldset; + siginfo_t info; + int signr; + + /* + * We want the common case to go fast, which is why we may in certain + * cases get here from kernel mode. Just return without doing anything + * if so. + */ + if (!user_mode(regs)) + return; + + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else + oldset = ¤t->blocked; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); + if (signr > 0) { + /* Actually deliver the signal. */ + if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { + /* + * A signal was successfully delivered; the saved + * sigmask will have been stored in the signal frame, + * and will be restored by sigreturn, so we can simply + * clear the TIF_RESTORE_SIGMASK flag. + */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + clear_thread_flag(TIF_RESTORE_SIGMASK); + } + + return; + } + + if (regs->is_syscall) { + if (regs->regs[4] == ERESTARTNOHAND || + regs->regs[4] == ERESTARTSYS || + regs->regs[4] == ERESTARTNOINTR) { + regs->regs[4] = regs->orig_r4; + regs->regs[7] = regs->orig_r7; + regs->cp0_epc -= 8; + } + + if (regs->regs[4] == ERESTART_RESTARTBLOCK) { + regs->regs[27] = __NR_restart_syscall; + regs->regs[4] = regs->orig_r4; + regs->regs[7] = regs->orig_r7; + regs->cp0_epc -= 8; + } + + regs->is_syscall = 0; /* Don't deal with this again. */ + } + + /* + * If there's no signal to deliver, we just put the saved sigmask + * back + */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) { + clear_thread_flag(TIF_RESTORE_SIGMASK); + sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); + } +} + +/* + * notification of userspace execution resumption + * - triggered by the TIF_WORK_MASK flags + */ +asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused, + __u32 thread_info_flags) +{ + /* deal with pending signal delivery */ + if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) + do_signal(regs); +} diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c new file mode 100644 index 000000000000..6a60d1ee5330 --- /dev/null +++ b/arch/score/kernel/sys_score.c @@ -0,0 +1,147 @@ +/* + * arch/score/kernel/syscall.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/mman.h> +#include <linux/module.h> +#include <linux/unistd.h> + +unsigned long shm_align_mask = PAGE_SIZE - 1; +EXPORT_SYMBOL(shm_align_mask); + +asmlinkage unsigned long +sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, + unsigned long flags, unsigned long fd, unsigned long pgoff) +{ + int error = -EBADF; + struct file *file = NULL; + + if (pgoff & (~PAGE_MASK >> 12)) + return -EINVAL; + + flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + if (!(flags & MAP_ANONYMOUS)) { + file = fget(fd); + if (!file) + return error; + } + + down_write(¤t->mm->mmap_sem); + error = do_mmap_pgoff(file, addr, len, prot, flags, + pgoff >> (PAGE_SHIFT - 12)); + up_write(¤t->mm->mmap_sem); + + if (file) + fput(file); + + return error; +} + +/* + * Clone a task - this clones the calling program thread. + * This is called indirectly via a small wrapper + */ +asmlinkage int +score_clone(struct pt_regs *regs) +{ + unsigned long clone_flags; + unsigned long newsp; + int __user *parent_tidptr, *child_tidptr; + + clone_flags = regs->regs[4]; + newsp = regs->regs[5]; + if (!newsp) + newsp = regs->regs[0]; + parent_tidptr = (int __user *)regs->regs[6]; + + child_tidptr = NULL; + if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)) { + int __user *__user *usp = (int __user *__user *)regs->regs[0]; + + if (get_user(child_tidptr, &usp[4])) + return -EFAULT; + } + + return do_fork(clone_flags, newsp, regs, 0, + parent_tidptr, child_tidptr); +} + +/* + * sys_execve() executes a new program. + * This is called indirectly via a small wrapper + */ +asmlinkage int score_execve(struct pt_regs *regs) +{ + int error; + char *filename; + + filename = getname((char *) (long) regs->regs[4]); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + return error; + + error = do_execve(filename, (char **) (long) regs->regs[5], + (char **) (long) regs->regs[6], regs); + + putname(filename); + return error; +} + +/* + * If we ever come here the user sp is bad. Zap the process right away. + * Due to the bad stack signaling wouldn't work. + */ +asmlinkage void bad_stack(void) +{ + do_exit(SIGSEGV); +} + +/* + * Do a system call from kernel instead of calling sys_execve so we + * end up with proper pt_regs. + */ +int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +{ + register unsigned long __r4 asm("r4") = (unsigned long) filename; + register unsigned long __r5 asm("r5") = (unsigned long) argv; + register unsigned long __r6 asm("r6") = (unsigned long) envp; + register unsigned long __r7 asm("r7"); + + __asm__ __volatile__ (" \n" + "ldi r27, %5 \n" + "syscall \n" + "mv %0, r4 \n" + "mv %1, r7 \n" + : "=&r" (__r4), "=r" (__r7) + : "r" (__r4), "r" (__r5), "r" (__r6), "i" (__NR_execve) + : "r8", "r9", "r10", "r11", "r22", "r23", "r24", "r25", + "r26", "r27", "memory"); + + if (__r7 == 0) + return __r4; + + return -__r4; +} diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c new file mode 100644 index 000000000000..cd66ba327ca7 --- /dev/null +++ b/arch/score/kernel/time.c @@ -0,0 +1,99 @@ +/* + * arch/score/kernel/time.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/clockchips.h> +#include <linux/interrupt.h> + +#include <asm/scoreregs.h> + +irqreturn_t timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evdev = dev_id; + + /* clear timer interrupt flag */ + outl(1, P_TIMER0_CPP_REG); + evdev->event_handler(evdev); + + return IRQ_HANDLED; +} + +static struct irqaction timer_irq = { + .handler = timer_interrupt, + .flags = IRQF_DISABLED | IRQF_TIMER, + .name = "timer", +}; + +static int score_timer_set_next_event(unsigned long delta, + struct clock_event_device *evdev) +{ + outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL); + outl(delta, P_TIMER0_PRELOAD); + outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL); + + return 0; +} + +static void score_timer_set_mode(enum clock_event_mode mode, + struct clock_event_device *evdev) +{ + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL); + outl(SYSTEM_CLOCK/HZ, P_TIMER0_PRELOAD); + outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL); + break; + case CLOCK_EVT_MODE_ONESHOT: + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_RESUME: + case CLOCK_EVT_MODE_UNUSED: + break; + default: + BUG(); + } +} + +static struct clock_event_device score_clockevent = { + .name = "score_clockevent", + .features = CLOCK_EVT_FEAT_PERIODIC, + .shift = 16, + .set_next_event = score_timer_set_next_event, + .set_mode = score_timer_set_mode, +}; + +void __init time_init(void) +{ + timer_irq.dev_id = &score_clockevent; + setup_irq(IRQ_TIMER , &timer_irq); + + /* setup COMPARE clockevent */ + score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC, + score_clockevent.shift); + score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0, + &score_clockevent); + score_clockevent.min_delta_ns = clockevent_delta2ns(50, + &score_clockevent) + 1; + score_clockevent.cpumask = cpumask_of(0); + clockevents_register_device(&score_clockevent); +} diff --git a/arch/score/kernel/traps.c b/arch/score/kernel/traps.c new file mode 100644 index 000000000000..957ae9eb3567 --- /dev/null +++ b/arch/score/kernel/traps.c @@ -0,0 +1,349 @@ +/* + * arch/score/kernel/traps.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/sched.h> + +#include <asm/cacheflush.h> +#include <asm/irq.h> +#include <asm/irq_regs.h> + +unsigned long exception_handlers[32]; + +/* + * The architecture-independent show_stack generator + */ +void show_stack(struct task_struct *task, unsigned long *sp) +{ + int i; + long stackdata; + + sp = sp ? sp : (unsigned long *)&sp; + + printk(KERN_NOTICE "Stack: "); + i = 1; + while ((long) sp & (PAGE_SIZE - 1)) { + if (i && ((i % 8) == 0)) + printk(KERN_NOTICE "\n"); + if (i > 40) { + printk(KERN_NOTICE " ..."); + break; + } + + if (__get_user(stackdata, sp++)) { + printk(KERN_NOTICE " (Bad stack address)"); + break; + } + + printk(KERN_NOTICE " %08lx", stackdata); + i++; + } + printk(KERN_NOTICE "\n"); +} + +static void show_trace(long *sp) +{ + int i; + long addr; + + sp = sp ? sp : (long *) &sp; + + printk(KERN_NOTICE "Call Trace: "); + i = 1; + while ((long) sp & (PAGE_SIZE - 1)) { + if (__get_user(addr, sp++)) { + if (i && ((i % 6) == 0)) + printk(KERN_NOTICE "\n"); + printk(KERN_NOTICE " (Bad stack address)\n"); + break; + } + + if (kernel_text_address(addr)) { + if (i && ((i % 6) == 0)) + printk(KERN_NOTICE "\n"); + if (i > 40) { + printk(KERN_NOTICE " ..."); + break; + } + + printk(KERN_NOTICE " [<%08lx>]", addr); + i++; + } + } + printk(KERN_NOTICE "\n"); +} + +static void show_code(unsigned int *pc) +{ + long i; + + printk(KERN_NOTICE "\nCode:"); + + for (i = -3; i < 6; i++) { + unsigned long insn; + if (__get_user(insn, pc + i)) { + printk(KERN_NOTICE " (Bad address in epc)\n"); + break; + } + printk(KERN_NOTICE "%c%08lx%c", (i ? ' ' : '<'), + insn, (i ? ' ' : '>')); + } +} + +/* + * FIXME: really the generic show_regs should take a const pointer argument. + */ +void show_regs(struct pt_regs *regs) +{ + printk("r0 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3], + regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); + printk("r8 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11], + regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]); + printk("r16: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19], + regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]); + printk("r24: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + regs->regs[24], regs->regs[25], regs->regs[26], regs->regs[27], + regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]); + + printk("CEH : %08lx\n", regs->ceh); + printk("CEL : %08lx\n", regs->cel); + + printk("EMA:%08lx, epc:%08lx %s\nPSR: %08lx\nECR:%08lx\nCondition : %08lx\n", + regs->cp0_ema, regs->cp0_epc, print_tainted(), regs->cp0_psr, + regs->cp0_ecr, regs->cp0_condition); +} + +static void show_registers(struct pt_regs *regs) +{ + show_regs(regs); + printk(KERN_NOTICE "Process %s (pid: %d, stackpage=%08lx)\n", + current->comm, current->pid, (unsigned long) current); + show_stack(current_thread_info()->task, (long *) regs->regs[0]); + show_trace((long *) regs->regs[0]); + show_code((unsigned int *) regs->cp0_epc); + printk(KERN_NOTICE "\n"); +} + +/* + * The architecture-independent dump_stack generator + */ +void dump_stack(void) +{ + show_stack(current_thread_info()->task, + (long *) get_irq_regs()->regs[0]); +} +EXPORT_SYMBOL(dump_stack); + +void __die(const char *str, struct pt_regs *regs, const char *file, + const char *func, unsigned long line) +{ + console_verbose(); + printk("%s", str); + if (file && func) + printk(" in %s:%s, line %ld", file, func, line); + printk(":\n"); + show_registers(regs); + do_exit(SIGSEGV); +} + +void __die_if_kernel(const char *str, struct pt_regs *regs, + const char *file, const char *func, unsigned long line) +{ + if (!user_mode(regs)) + __die(str, regs, file, func, line); +} + +asmlinkage void do_adelinsn(struct pt_regs *regs) +{ + printk("do_ADE-linsn:ema:0x%08lx:epc:0x%08lx\n", + regs->cp0_ema, regs->cp0_epc); + die_if_kernel("do_ade execution Exception\n", regs); + force_sig(SIGBUS, current); +} + +asmlinkage void do_adedata(struct pt_regs *regs) +{ + const struct exception_table_entry *fixup; + fixup = search_exception_tables(regs->cp0_epc); + if (fixup) { + regs->cp0_epc = fixup->fixup; + return; + } + printk("do_ADE-data:ema:0x%08lx:epc:0x%08lx\n", + regs->cp0_ema, regs->cp0_epc); + die_if_kernel("do_ade execution Exception\n", regs); + force_sig(SIGBUS, current); +} + +asmlinkage void do_pel(struct pt_regs *regs) +{ + die_if_kernel("do_pel execution Exception", regs); + force_sig(SIGFPE, current); +} + +asmlinkage void do_cee(struct pt_regs *regs) +{ + die_if_kernel("do_cee execution Exception", regs); + force_sig(SIGFPE, current); +} + +asmlinkage void do_cpe(struct pt_regs *regs) +{ + die_if_kernel("do_cpe execution Exception", regs); + force_sig(SIGFPE, current); +} + +asmlinkage void do_be(struct pt_regs *regs) +{ + die_if_kernel("do_be execution Exception", regs); + force_sig(SIGBUS, current); +} + +asmlinkage void do_ov(struct pt_regs *regs) +{ + siginfo_t info; + + die_if_kernel("do_ov execution Exception", regs); + + info.si_code = FPE_INTOVF; + info.si_signo = SIGFPE; + info.si_errno = 0; + info.si_addr = (void *)regs->cp0_epc; + force_sig_info(SIGFPE, &info, current); +} + +asmlinkage void do_tr(struct pt_regs *regs) +{ + die_if_kernel("do_tr execution Exception", regs); + force_sig(SIGTRAP, current); +} + +asmlinkage void do_ri(struct pt_regs *regs) +{ + unsigned long epc_insn; + unsigned long epc = regs->cp0_epc; + + read_tsk_long(current, epc, &epc_insn); + if (current->thread.single_step == 1) { + if ((epc == current->thread.addr1) || + (epc == current->thread.addr2)) { + clear_single_step(current); + force_sig(SIGTRAP, current); + return; + } else + BUG(); + } else if ((epc_insn == BREAKPOINT32_INSN) || + ((epc_insn & 0x0000FFFF) == 0x7002) || + ((epc_insn & 0xFFFF0000) == 0x70020000)) { + force_sig(SIGTRAP, current); + return; + } else { + die_if_kernel("do_ri execution Exception", regs); + force_sig(SIGILL, current); + } +} + +asmlinkage void do_ccu(struct pt_regs *regs) +{ + die_if_kernel("do_ccu execution Exception", regs); + force_sig(SIGILL, current); +} + +asmlinkage void do_reserved(struct pt_regs *regs) +{ + /* + * Game over - no way to handle this if it ever occurs. Most probably + * caused by a new unknown cpu type or after another deadly + * hard/software error. + */ + die_if_kernel("do_reserved execution Exception", regs); + show_regs(regs); + panic("Caught reserved exception - should not happen."); +} + +/* + * NMI exception handler. + */ +void nmi_exception_handler(struct pt_regs *regs) +{ + die_if_kernel("nmi_exception_handler execution Exception", regs); + die("NMI", regs); +} + +/* Install CPU exception handler */ +void *set_except_vector(int n, void *addr) +{ + unsigned long handler = (unsigned long) addr; + unsigned long old_handler = exception_handlers[n]; + + exception_handlers[n] = handler; + return (void *)old_handler; +} + +void __init trap_init(void) +{ + int i; + + pgd_current = (unsigned long)init_mm.pgd; + /* DEBUG EXCEPTION */ + memcpy((void *)DEBUG_VECTOR_BASE_ADDR, + &debug_exception_vector, DEBUG_VECTOR_SIZE); + /* NMI EXCEPTION */ + memcpy((void *)GENERAL_VECTOR_BASE_ADDR, + &general_exception_vector, GENERAL_VECTOR_SIZE); + + /* + * Initialise exception handlers + */ + for (i = 0; i <= 31; i++) + set_except_vector(i, handle_reserved); + + set_except_vector(1, handle_nmi); + set_except_vector(2, handle_adelinsn); + set_except_vector(3, handle_tlb_refill); + set_except_vector(4, handle_tlb_invaild); + set_except_vector(5, handle_ibe); + set_except_vector(6, handle_pel); + set_except_vector(7, handle_sys); + set_except_vector(8, handle_ccu); + set_except_vector(9, handle_ri); + set_except_vector(10, handle_tr); + set_except_vector(11, handle_adedata); + set_except_vector(12, handle_adedata); + set_except_vector(13, handle_tlb_refill); + set_except_vector(14, handle_tlb_invaild); + set_except_vector(15, handle_mod); + set_except_vector(16, handle_cee); + set_except_vector(17, handle_cpe); + set_except_vector(18, handle_dbe); + flush_icache_range(DEBUG_VECTOR_BASE_ADDR, IRQ_VECTOR_BASE_ADDR); + + atomic_inc(&init_mm.mm_count); + current->active_mm = &init_mm; + cpu_cache_init(); +} diff --git a/arch/score/kernel/vmlinux.lds.S b/arch/score/kernel/vmlinux.lds.S new file mode 100644 index 000000000000..f85569831d5c --- /dev/null +++ b/arch/score/kernel/vmlinux.lds.S @@ -0,0 +1,148 @@ +/* + * arch/score/kernel/vmlinux.lds.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <asm-generic/vmlinux.lds.h> + +OUTPUT_ARCH(score) +ENTRY(_stext) + +jiffies = jiffies_64; + +SECTIONS +{ + . = CONFIG_MEMORY_START + 0x2000; + /* read-only */ + .text : { + _text = .; /* Text and read-only data */ + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + KPROBES_TEXT + *(.text.*) + *(.fixup) + . = ALIGN (4) ; + _etext = .; /* End of text section */ + } + + . = ALIGN(16); + RODATA + + /* Exception table */ + . = ALIGN(16); + __ex_table : { + __start___ex_table = .; + *(__ex_table) + __stop___ex_table = .; + } + + /* writeable */ + .data ALIGN (4096): { + *(.data.init_task) + + DATA_DATA + CONSTRUCTORS + } + + /* We want the small data sections together, so single-instruction offsets + can access them all, and initialized data all before uninitialized, so + we can shorten the on-disk segment size. */ + . = ALIGN(8); + .sdata : { + *(.sdata) + } + + . = ALIGN(32); + .data.cacheline_aligned : { + *(.data.cacheline_aligned) + } + _edata = .; /* End of data section */ + + /* will be freed after init */ + . = ALIGN(4096); /* Init code and data */ + __init_begin = .; + + . = ALIGN(4096); + .init.text : { + _sinittext = .; + INIT_TEXT + _einittext = .; + } + .init.data : { + INIT_DATA + } + . = ALIGN(16); + .init.setup : { + __setup_start = .; + *(.init.setup) + __setup_end = .; + } + + .initcall.init : { + __initcall_start = .; + INITCALLS + __initcall_end = .; + } + + .con_initcall.init : { + __con_initcall_start = .; + *(.con_initcall.init) + __con_initcall_end = .; + } + SECURITY_INIT + + /* .exit.text is discarded at runtime, not link time, to deal with + * references from .rodata + */ + .exit.text : { + EXIT_TEXT + } + .exit.data : { + EXIT_DATA + } +#if defined(CONFIG_BLK_DEV_INITRD) + .init.ramfs ALIGN(4096): { + __initramfs_start = .; + *(.init.ramfs) + __initramfs_end = .; + . = ALIGN(4); + LONG(0); + } +#endif + . = ALIGN(4096); + __init_end = .; + /* freed after init ends here */ + + __bss_start = .; /* BSS */ + .sbss : { + *(.sbss) + *(.scommon) + } + .bss : { + *(.bss) + *(COMMON) + } + __bss_stop = .; + _end = .; +} diff --git a/arch/score/lib/Makefile b/arch/score/lib/Makefile new file mode 100644 index 000000000000..553e30e81faf --- /dev/null +++ b/arch/score/lib/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for SCORE-specific library files.. +# + +lib-y += string.o checksum.o checksum_copy.o + +# libgcc-style stuff needed in the kernel +obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c new file mode 100644 index 000000000000..15691a910431 --- /dev/null +++ b/arch/score/lib/ashldi3.c @@ -0,0 +1,46 @@ +/* + * arch/score/lib/ashldi3.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include "libgcc.h" + +long long __ashldi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + w.s.low = 0; + w.s.high = (unsigned int) uu.s.low << -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.low >> bm; + + w.s.low = (unsigned int) uu.s.low << b; + w.s.high = ((unsigned int) uu.s.high << b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__ashldi3); diff --git a/arch/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c new file mode 100644 index 000000000000..d9814a5d8d30 --- /dev/null +++ b/arch/score/lib/ashrdi3.c @@ -0,0 +1,48 @@ +/* + * arch/score/lib/ashrdi3.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include "libgcc.h" + +long long __ashrdi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + /* w.s.high = 1..1 or 0..0 */ + w.s.high = + uu.s.high >> 31; + w.s.low = uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__ashrdi3); diff --git a/arch/score/lib/checksum.S b/arch/score/lib/checksum.S new file mode 100644 index 000000000000..706157edc7d5 --- /dev/null +++ b/arch/score/lib/checksum.S @@ -0,0 +1,255 @@ +/* + * arch/score/lib/csum_partial.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/linkage.h> + +#define ADDC(sum,reg) \ + add sum, sum, reg; \ + cmp.c reg, sum; \ + bleu 9f; \ + addi sum, 0x1; \ +9: + +#define CSUM_BIGCHUNK(src, offset, sum) \ + lw r8, [src, offset + 0x00]; \ + lw r9, [src, offset + 0x04]; \ + lw r10, [src, offset + 0x08]; \ + lw r11, [src, offset + 0x0c]; \ + ADDC(sum, r8); \ + ADDC(sum, r9); \ + ADDC(sum, r10); \ + ADDC(sum, r11); \ + lw r8, [src, offset + 0x10]; \ + lw r9, [src, offset + 0x14]; \ + lw r10, [src, offset + 0x18]; \ + lw r11, [src, offset + 0x1c]; \ + ADDC(sum, r8); \ + ADDC(sum, r9); \ + ADDC(sum, r10); \ + ADDC(sum, r11); \ + +#define src r4 +#define dest r5 +#define sum r27 + + .text +/* unknown src alignment and < 8 bytes to go */ +small_csumcpy: + mv r5, r10 + ldi r9, 0x0 + cmpi.c r25, 0x1 + beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/ + andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/ + +pass_small_set_t7: + beq aligned + cmpi.c r5, 0x0 + beq fold + lbu r9, [src] + slli r9,r9, 0x8 /*Little endian*/ + ADDC(sum, r9) + addi src, 0x1 + subi.c r5, 0x1 + + /*len still a full word */ +aligned: + andri.c r8, r5, 0x4 /*Len >= 4?*/ + beq len_less_4bytes + + /* Still a full word (4byte) to go,and the src is word aligned.*/ + andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/ + beq four_byte_aligned + lhu r9, [src] + addi src, 2 + ADDC(sum, r9) + lhu r9, [src] + addi src, 2 + ADDC(sum, r9) + b len_less_4bytes + +four_byte_aligned: /* Len >=4 and four byte aligned */ + lw r9, [src] + addi src, 4 + ADDC(sum, r9) + +len_less_4bytes: /* 2 byte aligned aligned and length<4B */ + andri.c r8, r5, 0x2 + beq len_less_2bytes + lhu r9, [src] + addi src, 0x2 /* src+=2 */ + ADDC(sum, r9) + +len_less_2bytes: /* len = 1 */ + andri.c r8, r5, 0x1 + beq fold /* less than 2 and not equal 1--> len=0 -> fold */ + lbu r9, [src] + +fold_ADDC: + ADDC(sum, r9) +fold: + /* fold checksum */ + slli r26, sum, 16 + add sum, sum, r26 + cmp.c r26, sum + srli sum, sum, 16 + bleu 1f /* if r26<=sum */ + addi sum, 0x1 /* r26>sum */ +1: + /* odd buffer alignment? r25 was set in csum_partial */ + cmpi.c r25, 0x0 + beq 1f + slli r26, sum, 8 + srli sum, sum, 8 + or sum, sum, r26 + andi sum, 0xffff +1: + .set optimize + /* Add the passed partial csum. */ + ADDC(sum, r6) + mv r4, sum + br r3 + .set volatile + + .align 5 +ENTRY(csum_partial) + ldi sum, 0 + ldi r25, 0 + mv r10, r5 + cmpi.c r5, 0x8 + blt small_csumcpy /* < 8(singed) bytes to copy */ + cmpi.c r5, 0x0 + beq out + andri.c r25, src, 0x1 /* odd buffer? */ + + beq word_align +hword_align: /* 1 byte */ + lbu r8, [src] + subi r5, 0x1 + slli r8, r8, 8 + ADDC(sum, r8) + addi src, 0x1 + +word_align: /* 2 bytes */ + andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */ + beq dword_align /* not, maybe dword_align */ + lhu r8, [src] + subi r5, 0x2 + ADDC(sum, r8) + addi src, 0x2 + +dword_align: /* 4bytes */ + mv r26, r5 /* maybe useless when len >=56 */ + ldi r8, 56 + cmp.c r8, r5 + bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */ + andri.c r26, src, 0x4 + beq qword_align + lw r8, [src] + subi r5, 0x4 + ADDC(sum, r8) + addi src, 0x4 + +qword_align: /* 8 bytes */ + andri.c r26, src, 0x8 + beq oword_align + lw r8, [src, 0x0] + lw r9, [src, 0x4] + subi r5, 0x8 /* len-=0x8 */ + ADDC(sum, r8) + ADDC(sum, r9) + addi src, 0x8 + +oword_align: /* 16bytes */ + andri.c r26, src, 0x10 + beq begin_movement + lw r10, [src, 0x08] + lw r11, [src, 0x0c] + lw r8, [src, 0x00] + lw r9, [src, 0x04] + ADDC(sum, r10) + ADDC(sum, r11) + ADDC(sum, r8) + ADDC(sum, r9) + subi r5, 0x10 + addi src, 0x10 + +begin_movement: + srli.c r26, r5, 0x7 /* len>=128? */ + beq 1f /* len<128 */ + +/* r26 is the result that computed in oword_align */ +move_128bytes: + CSUM_BIGCHUNK(src, 0x00, sum) + CSUM_BIGCHUNK(src, 0x20, sum) + CSUM_BIGCHUNK(src, 0x40, sum) + CSUM_BIGCHUNK(src, 0x60, sum) + subi.c r26, 0x01 /* r26 equals len/128 */ + addi src, 0x80 + bne move_128bytes + +1: /* len<128,we process 64byte here */ + andri.c r10, r5, 0x40 + beq 1f + +move_64bytes: + CSUM_BIGCHUNK(src, 0x00, sum) + CSUM_BIGCHUNK(src, 0x20, sum) + addi src, 0x40 + +1: /* len<64 */ + andri r26, r5, 0x1c /* 0x1c=28 */ + andri.c r10, r5, 0x20 + beq do_end_words /* decided by andri */ + +move_32bytes: + CSUM_BIGCHUNK(src, 0x00, sum) + andri r26, r5, 0x1c + addri src, src, 0x20 + +do_end_words: /* len<32 */ + /* r26 was set already in dword_align */ + cmpi.c r26, 0x0 + beq maybe_end_cruft /* len<28 or len<56 */ + srli r26, r26, 0x2 + +end_words: + lw r8, [src] + subi.c r26, 0x1 /* unit is 4 byte */ + ADDC(sum, r8) + addi src, 0x4 + cmpi.c r26, 0x0 + bne end_words /* r26!=0 */ + +maybe_end_cruft: /* len<4 */ + andri r10, r5, 0x3 + +small_memcpy: + mv r5, r10 + j small_csumcpy + +out: + mv r4, sum + br r3 + +END(csum_partial) diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c new file mode 100644 index 000000000000..04565dd3ded8 --- /dev/null +++ b/arch/score/lib/checksum_copy.c @@ -0,0 +1,52 @@ +/* + * arch/score/lib/csum_partial_copy.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <net/checksum.h> + +#include <asm/uaccess.h> + +unsigned int csum_partial_copy(const char *src, char *dst, + int len, unsigned int sum) +{ + sum = csum_partial(src, len, sum); + memcpy(dst, src, len); + + return sum; +} + +unsigned int csum_partial_copy_from_user(const char *src, char *dst, + int len, unsigned int sum, + int *err_ptr) +{ + int missing; + + missing = copy_from_user(dst, src, len); + if (missing) { + memset(dst + len - missing, 0, missing); + *err_ptr = -EFAULT; + } + + return csum_partial(dst, len, sum); +} diff --git a/arch/score/lib/cmpdi2.c b/arch/score/lib/cmpdi2.c new file mode 100644 index 000000000000..1ed5290c66ed --- /dev/null +++ b/arch/score/lib/cmpdi2.c @@ -0,0 +1,44 @@ +/* + * arch/score/lib/cmpdi2.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include "libgcc.h" + +word_type __cmpdi2(long long a, long long b) +{ + const DWunion au = { + .ll = a + }; + const DWunion bu = { + .ll = b + }; + + if (au.s.high < bu.s.high) + return 0; + else if (au.s.high > bu.s.high) + return 2; + + if ((unsigned int) au.s.low < (unsigned int) bu.s.low) + return 0; + else if ((unsigned int) au.s.low > (unsigned int) bu.s.low) + return 2; + + return 1; +} +EXPORT_SYMBOL(__cmpdi2); diff --git a/arch/score/lib/libgcc.h b/arch/score/lib/libgcc.h new file mode 100644 index 000000000000..0f12543d9f31 --- /dev/null +++ b/arch/score/lib/libgcc.h @@ -0,0 +1,37 @@ +/* + * arch/score/lib/libgcc.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + + +#ifndef __ASM_LIBGCC_H +#define __ASM_LIBGCC_H + +#include <asm/byteorder.h> + +typedef int word_type __attribute__((mode(__word__))); + +struct DWstruct { + int low, high; +}; + +typedef union { + struct DWstruct s; + long long ll; +} DWunion; + +#endif /* __ASM_LIBGCC_H */ diff --git a/arch/score/lib/lshrdi3.c b/arch/score/lib/lshrdi3.c new file mode 100644 index 000000000000..ce21175fd791 --- /dev/null +++ b/arch/score/lib/lshrdi3.c @@ -0,0 +1,47 @@ +/* + * arch/score/lib/lshrdi3.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + + +#include <linux/module.h> +#include "libgcc.h" + +long long __lshrdi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + w.s.high = 0; + w.s.low = (unsigned int) uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = (unsigned int) uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__lshrdi3); diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S new file mode 100644 index 000000000000..943d0911ea89 --- /dev/null +++ b/arch/score/lib/string.S @@ -0,0 +1,196 @@ +/* + * arch/score/lib/string.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Chen Liqin <liqin.chen@sunplusct.com> + * Lennox Wu <lennox.wu@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/linkage.h> +#include <asm-generic/errno.h> + + .text + .align 2 +ENTRY(__strncpy_from_user) + cmpi.c r6, 0 + mv r9, r6 + ble .L2 +0: lbu r7, [r5] + ldi r8, 0 +1: sb r7, [r4] +2: lb r6, [r5] + cmp.c r6, r8 + beq .L2 + +.L5: + addi r8, 1 + cmp.c r8, r9 + beq .L7 +3: lbu r6, [r5, 1]+ +4: sb r6, [r4, 1]+ +5: lb r7, [r5] + cmpi.c r7, 0 + bne .L5 +.L7: + mv r4, r8 + br r3 +.L2: + ldi r8, 0 + mv r4, r8 + br r3 + .section .fixup, "ax" +99: + ldi r4, -EFAULT + br r3 + .previous + .section __ex_table, "a" + .align 2 + .word 0b ,99b + .word 1b ,99b + .word 2b ,99b + .word 3b ,99b + .word 4b ,99b + .word 5b ,99b + .previous + + .align 2 +ENTRY(__strnlen_user) + cmpi.c r5, 0 + ble .L11 +0: lb r6, [r4] + ldi r7, 0 + cmp.c r6, r7 + beq .L11 +.L15: + addi r7, 1 + cmp.c r7, r5 + beq .L23 +1: lb r6, [r4,1]+ + cmpi.c r6, 0 + bne .L15 +.L23: + addri r4, r7, 1 + br r3 + +.L11: + ldi r4, 1 + br r3 + .section .fixup, "ax" +99: + ldi r4, 0 + br r3 + + .section __ex_table,"a" + .align 2 + .word 0b, 99b + .word 1b, 99b + .previous + + .align 2 +ENTRY(__strlen_user) +0: lb r6, [r4] + mv r7, r4 + extsb r6, r6 + cmpi.c r6, 0 + mv r4, r6 + beq .L27 +.L28: +1: lb r6, [r7, 1]+ + addi r6, 1 + cmpi.c r6, 0 + bne .L28 +.L27: + br r3 + .section .fixup, "ax" + ldi r4, 0x0 + br r3 +99: + ldi r4, 0 + br r3 + .previous + .section __ex_table, "a" + .align 2 + .word 0b ,99b + .word 1b ,99b + .previous + + .align 2 +ENTRY(__copy_tofrom_user) + cmpi.c r6, 0 + mv r10,r6 + beq .L32 + ldi r9, 0 +.L34: + add r6, r5, r9 +0: lbu r8, [r6] + add r7, r4, r9 +1: sb r8, [r7] + addi r9, 1 + cmp.c r9, r10 + bne .L34 +.L32: + ldi r4, 0 + br r3 + .section .fixup, "ax" +99: + sub r4, r10, r9 + br r3 + .previous + .section __ex_table, "a" + .align 2 + .word 0b, 99b + .word 1b, 99b + .previous + + .align 2 +ENTRY(__clear_user) + cmpi.c r5, 0 + beq .L38 + ldi r6, 0 + mv r7, r6 +.L40: + addi r6, 1 +0: sb r7, [r4]+, 1 + cmp.c r6, r5 + bne .L40 +.L38: + ldi r4, 0 + br r3 + + .section .fixup, "ax" + br r3 + .previous + .section __ex_table, "a" + .align 2 +99: + .word 0b, 99b + .previous + + .align 2 +ENTRY(__put_user_unknown) + .set volatile + ldi r4, -EFAULT + br r3 + + .align 2 +ENTRY(__get_user_unknown) + ldi r5, 0 + ldi r4, -EFAULT + br r3 diff --git a/arch/score/lib/ucmpdi2.c b/arch/score/lib/ucmpdi2.c new file mode 100644 index 000000000000..b15241e0b079 --- /dev/null +++ b/arch/score/lib/ucmpdi2.c @@ -0,0 +1,38 @@ +/* + * arch/score/lib/ucmpdi2.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> +#include "libgcc.h" + +word_type __ucmpdi2(unsigned long long a, unsigned long long b) +{ + const DWunion au = {.ll = a}; + const DWunion bu = {.ll = b}; + + if ((unsigned int) au.s.high < (unsigned int) bu.s.high) + return 0; + else if ((unsigned int) au.s.high > (unsigned int) bu.s.high) + return 2; + if ((unsigned int) au.s.low < (unsigned int) bu.s.low) + return 0; + else if ((unsigned int) au.s.low > (unsigned int) bu.s.low) + return 2; + return 1; +} +EXPORT_SYMBOL(__ucmpdi2); diff --git a/arch/score/mm/Makefile b/arch/score/mm/Makefile new file mode 100644 index 000000000000..7b1e29b1f8cd --- /dev/null +++ b/arch/score/mm/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the Linux/SCORE-specific parts of the memory manager. +# + +obj-y += cache.o extable.o fault.o init.o \ + tlb-miss.o tlb-score.o pgtable.o diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c new file mode 100644 index 000000000000..1ebc67f18c6d --- /dev/null +++ b/arch/score/mm/cache.c @@ -0,0 +1,308 @@ +/* + * arch/score/mm/cache.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/linkage.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/sched.h> + +#include <asm/mmu_context.h> + +/* Cache operations. */ +void (*flush_cache_all)(void); +void (*__flush_cache_all)(void); +void (*flush_cache_mm)(struct mm_struct *mm); +void (*flush_cache_range)(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +void (*flush_cache_page)(struct vm_area_struct *vma, + unsigned long page, unsigned long pfn); +void (*flush_icache_range)(unsigned long start, unsigned long end); +void (*__flush_cache_vmap)(void); +void (*__flush_cache_vunmap)(void); +void (*flush_cache_sigtramp)(unsigned long addr); +void (*flush_data_cache_page)(unsigned long addr); +EXPORT_SYMBOL(flush_data_cache_page); +void (*flush_icache_all)(void); + +/*Score 7 cache operations*/ +static inline void s7___flush_cache_all(void); +static void s7_flush_cache_mm(struct mm_struct *mm); +static void s7_flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +static void s7_flush_cache_page(struct vm_area_struct *vma, + unsigned long page, unsigned long pfn); +static void s7_flush_icache_range(unsigned long start, unsigned long end); +static void s7_flush_cache_sigtramp(unsigned long addr); +static void s7_flush_data_cache_page(unsigned long addr); +static void s7_flush_dcache_range(unsigned long start, unsigned long end); + +void __update_cache(struct vm_area_struct *vma, unsigned long address, + pte_t pte) +{ + struct page *page; + unsigned long pfn, addr; + int exec = (vma->vm_flags & VM_EXEC); + + pfn = pte_pfn(pte); + if (unlikely(!pfn_valid(pfn))) + return; + page = pfn_to_page(pfn); + if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) { + addr = (unsigned long) page_address(page); + if (exec) + s7_flush_data_cache_page(addr); + clear_bit(PG_arch_1, &page->flags); + } +} + +static inline void setup_protection_map(void) +{ + protection_map[0] = PAGE_NONE; + protection_map[1] = PAGE_READONLY; + protection_map[2] = PAGE_COPY; + protection_map[3] = PAGE_COPY; + protection_map[4] = PAGE_READONLY; + protection_map[5] = PAGE_READONLY; + protection_map[6] = PAGE_COPY; + protection_map[7] = PAGE_COPY; + protection_map[8] = PAGE_NONE; + protection_map[9] = PAGE_READONLY; + protection_map[10] = PAGE_SHARED; + protection_map[11] = PAGE_SHARED; + protection_map[12] = PAGE_READONLY; + protection_map[13] = PAGE_READONLY; + protection_map[14] = PAGE_SHARED; + protection_map[15] = PAGE_SHARED; +} + +void __devinit cpu_cache_init(void) +{ + flush_cache_all = s7_flush_cache_all; + __flush_cache_all = s7___flush_cache_all; + flush_cache_mm = s7_flush_cache_mm; + flush_cache_range = s7_flush_cache_range; + flush_cache_page = s7_flush_cache_page; + flush_icache_range = s7_flush_icache_range; + flush_cache_sigtramp = s7_flush_cache_sigtramp; + flush_data_cache_page = s7_flush_data_cache_page; + + setup_protection_map(); +} + +void s7_flush_icache_all(void) +{ + __asm__ __volatile__( + "la r8, s7_flush_icache_all\n" + "cache 0x10, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + : : : "r8"); +} + +void s7_flush_dcache_all(void) +{ + __asm__ __volatile__( + "la r8, s7_flush_dcache_all\n" + "cache 0x1f, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + "cache 0x1a, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + : : : "r8"); +} + +void s7_flush_cache_all(void) +{ + __asm__ __volatile__( + "la r8, s7_flush_cache_all\n" + "cache 0x10, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + "cache 0x1f, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + "cache 0x1a, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + : : : "r8"); +} + +void s7___flush_cache_all(void) +{ + __asm__ __volatile__( + "la r8, s7_flush_cache_all\n" + "cache 0x10, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + "cache 0x1f, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + "cache 0x1a, [r8, 0]\n" + "nop\nnop\nnop\nnop\nnop\nnop\n" + : : : "r8"); +} + +static void s7_flush_cache_mm(struct mm_struct *mm) +{ + if (!(mm->context)) + return; + s7_flush_cache_all(); +} + +/*if we flush a range precisely , the processing may be very long. +We must check each page in the range whether present. If the page is present, +we can flush the range in the page. Be careful, the range may be cross two +page, a page is present and another is not present. +*/ +/* +The interface is provided in hopes that the port can find +a suitably efficient method for removing multiple page +sized regions from the cache. +*/ +static void +s7_flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + struct mm_struct *mm = vma->vm_mm; + int exec = vma->vm_flags & VM_EXEC; + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp; + pte_t *ptep; + + if (!(mm->context)) + return; + + pgdp = pgd_offset(mm, start); + pudp = pud_offset(pgdp, start); + pmdp = pmd_offset(pudp, start); + ptep = pte_offset(pmdp, start); + + while (start <= end) { + unsigned long tmpend; + pgdp = pgd_offset(mm, start); + pudp = pud_offset(pgdp, start); + pmdp = pmd_offset(pudp, start); + ptep = pte_offset(pmdp, start); + + if (!(pte_val(*ptep) & _PAGE_PRESENT)) { + start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1); + continue; + } + tmpend = (start | (PAGE_SIZE-1)) > end ? + end : (start | (PAGE_SIZE-1)); + + s7_flush_dcache_range(start, tmpend); + if (exec) + s7_flush_icache_range(start, tmpend); + start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1); + } +} + +static void +s7_flush_cache_page(struct vm_area_struct *vma, + unsigned long addr, unsigned long pfn) +{ + int exec = vma->vm_flags & VM_EXEC; + unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT); + + s7_flush_dcache_range(kaddr, kaddr + PAGE_SIZE); + + if (exec) + s7_flush_icache_range(kaddr, kaddr + PAGE_SIZE); +} + +static void s7_flush_cache_sigtramp(unsigned long addr) +{ + __asm__ __volatile__( + "cache 0x02, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + "cache 0x02, [%0, 0x4]\n" + "nop\nnop\nnop\nnop\nnop\n" + + "cache 0x0d, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + "cache 0x0d, [%0, 0x4]\n" + "nop\nnop\nnop\nnop\nnop\n" + + "cache 0x1a, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (addr)); +} + +/* +Just flush entire Dcache!! +You must ensure the page doesn't include instructions, because +the function will not flush the Icache. +The addr must be cache aligned. +*/ +static void s7_flush_data_cache_page(unsigned long addr) +{ + unsigned int i; + for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) { + __asm__ __volatile__( + "cache 0x0e, [%0, 0]\n" + "cache 0x1a, [%0, 0]\n" + "nop\n" + : : "r" (addr)); + addr += L1_CACHE_BYTES; + } +} + +/* +1. WB and invalid a cache line of Dcache +2. Drain Write Buffer +the range must be smaller than PAGE_SIZE +*/ +static void s7_flush_dcache_range(unsigned long start, unsigned long end) +{ + int size, i; + + start = start & ~(L1_CACHE_BYTES - 1); + end = end & ~(L1_CACHE_BYTES - 1); + size = end - start; + /* flush dcache to ram, and invalidate dcache lines. */ + for (i = 0; i < size; i += L1_CACHE_BYTES) { + __asm__ __volatile__( + "cache 0x0e, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + "cache 0x1a, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (start)); + start += L1_CACHE_BYTES; + } +} + +static void s7_flush_icache_range(unsigned long start, unsigned long end) +{ + int size, i; + start = start & ~(L1_CACHE_BYTES - 1); + end = end & ~(L1_CACHE_BYTES - 1); + + size = end - start; + /* invalidate icache lines. */ + for (i = 0; i < size; i += L1_CACHE_BYTES) { + __asm__ __volatile__( + "cache 0x02, [%0, 0]\n" + "nop\nnop\nnop\nnop\nnop\n" + : : "r" (start)); + start += L1_CACHE_BYTES; + } +} diff --git a/arch/score/mm/extable.c b/arch/score/mm/extable.c new file mode 100644 index 000000000000..01ff6445171c --- /dev/null +++ b/arch/score/mm/extable.c @@ -0,0 +1,38 @@ +/* + * arch/score/mm/extable.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/module.h> + +int fixup_exception(struct pt_regs *regs) +{ + const struct exception_table_entry *fixup; + + fixup = search_exception_tables(regs->cp0_epc); + if (fixup) { + regs->cp0_epc = fixup->fixup; + return 1; + } + return 0; +} diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c new file mode 100644 index 000000000000..47b600e4b2c5 --- /dev/null +++ b/arch/score/mm/fault.c @@ -0,0 +1,235 @@ +/* + * arch/score/mm/fault.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/mman.h> +#include <linux/module.h> +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/ptrace.h> + +/* + * This routine handles page faults. It determines the address, + * and the problem, and then passes it off to one of the appropriate + * routines. + */ +asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write, + unsigned long address) +{ + struct vm_area_struct *vma = NULL; + struct task_struct *tsk = current; + struct mm_struct *mm = tsk->mm; + const int field = sizeof(unsigned long) * 2; + siginfo_t info; + int fault; + + info.si_code = SEGV_MAPERR; + + /* + * We fault-in kernel-space virtual memory on-demand. The + * 'reference' page table is init_mm.pgd. + * + * NOTE! We MUST NOT take any locks for this case. We may + * be in an interrupt or a critical region, and should + * only copy the information from the master page table, + * nothing more. + */ + if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END)) + goto vmalloc_fault; +#ifdef MODULE_START + if (unlikely(address >= MODULE_START && address < MODULE_END)) + goto vmalloc_fault; +#endif + + /* + * If we're in an interrupt or have no user + * context, we must not take the fault.. + */ + if (in_atomic() || !mm) + goto bad_area_nosemaphore; + + down_read(&mm->mmap_sem); + vma = find_vma(mm, address); + if (!vma) + goto bad_area; + if (vma->vm_start <= address) + goto good_area; + if (!(vma->vm_flags & VM_GROWSDOWN)) + goto bad_area; + if (expand_stack(vma, address)) + goto bad_area; + /* + * Ok, we have a good vm_area for this memory access, so + * we can handle it.. + */ +good_area: + info.si_code = SEGV_ACCERR; + + if (write) { + if (!(vma->vm_flags & VM_WRITE)) + goto bad_area; + } else { + if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) + goto bad_area; + } + +survive: + /* + * If for any reason at all we couldn't handle the fault, + * make sure we exit gracefully rather than endlessly redo + * the fault. + */ + fault = handle_mm_fault(mm, vma, address, write); + if (unlikely(fault & VM_FAULT_ERROR)) { + if (fault & VM_FAULT_OOM) + goto out_of_memory; + else if (fault & VM_FAULT_SIGBUS) + goto do_sigbus; + BUG(); + } + if (fault & VM_FAULT_MAJOR) + tsk->maj_flt++; + else + tsk->min_flt++; + + up_read(&mm->mmap_sem); + return; + + /* + * Something tried to access memory that isn't in our memory map.. + * Fix it, but check if it's kernel or user first.. + */ +bad_area: + up_read(&mm->mmap_sem); + +bad_area_nosemaphore: + /* User mode accesses just cause a SIGSEGV */ + if (user_mode(regs)) { + tsk->thread.cp0_badvaddr = address; + tsk->thread.error_code = write; + info.si_signo = SIGSEGV; + info.si_errno = 0; + /* info.si_code has been set above */ + info.si_addr = (void __user *) address; + force_sig_info(SIGSEGV, &info, tsk); + return; + } + +no_context: + /* Are we prepared to handle this kernel fault? */ + if (fixup_exception(regs)) { + current->thread.cp0_baduaddr = address; + return; + } + + /* + * Oops. The kernel tried to access some bad page. We'll have to + * terminate things with extreme prejudice. + */ + bust_spinlocks(1); + + printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at " + "virtual address %0*lx, epc == %0*lx, ra == %0*lx\n", + 0, field, address, field, regs->cp0_epc, + field, regs->regs[3]); + die("Oops", regs); + + /* + * We ran out of memory, or some other thing happened to us that made + * us unable to handle the page fault gracefully. + */ +out_of_memory: + up_read(&mm->mmap_sem); + if (is_global_init(tsk)) { + yield(); + down_read(&mm->mmap_sem); + goto survive; + } + printk("VM: killing process %s\n", tsk->comm); + if (user_mode(regs)) + do_group_exit(SIGKILL); + goto no_context; + +do_sigbus: + up_read(&mm->mmap_sem); + /* Kernel mode? Handle exceptions or die */ + if (!user_mode(regs)) + goto no_context; + else + /* + * Send a sigbus, regardless of whether we were in kernel + * or user mode. + */ + tsk->thread.cp0_badvaddr = address; + info.si_signo = SIGBUS; + info.si_errno = 0; + info.si_code = BUS_ADRERR; + info.si_addr = (void __user *) address; + force_sig_info(SIGBUS, &info, tsk); + return; +vmalloc_fault: + { + /* + * Synchronize this task's top level page-table + * with the 'reference' page table. + * + * Do _not_ use "tsk" here. We might be inside + * an interrupt in the middle of a task switch.. + */ + int offset = __pgd_offset(address); + pgd_t *pgd, *pgd_k; + pud_t *pud, *pud_k; + pmd_t *pmd, *pmd_k; + pte_t *pte_k; + + pgd = (pgd_t *) pgd_current + offset; + pgd_k = init_mm.pgd + offset; + + if (!pgd_present(*pgd_k)) + goto no_context; + set_pgd(pgd, *pgd_k); + + pud = pud_offset(pgd, address); + pud_k = pud_offset(pgd_k, address); + if (!pud_present(*pud_k)) + goto no_context; + + pmd = pmd_offset(pud, address); + pmd_k = pmd_offset(pud_k, address); + if (!pmd_present(*pmd_k)) + goto no_context; + set_pmd(pmd, *pmd_k); + + pte_k = pte_offset_kernel(pmd_k, address); + if (!pte_present(*pte_k)) + goto no_context; + return; + } +} diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c new file mode 100644 index 000000000000..7780eecc5a43 --- /dev/null +++ b/arch/score/mm/init.c @@ -0,0 +1,173 @@ +/* + * arch/score/mm/init.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/errno.h> +#include <linux/bootmem.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/mman.h> +#include <linux/pagemap.h> +#include <linux/proc_fs.h> +#include <linux/sched.h> +#include <asm-generic/sections.h> + +#include <asm/tlb.h> + +DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); + +/* + * We have up to 8 empty zeroed pages so we can map one of the right colour + * when needed. + */ +unsigned long zero_page_mask; +unsigned long empty_zero_page; +EXPORT_SYMBOL_GPL(empty_zero_page); + +static struct kcore_list kcore_mem, kcore_vmalloc; + +unsigned long setup_zero_pages(void) +{ + unsigned int order = 0; + unsigned long size; + struct page *page; + + empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order); + if (!empty_zero_page) + panic("Oh boy, that early out of memory?"); + + page = virt_to_page((void *) empty_zero_page); + split_page(page, order); + while (page < virt_to_page((void *) (empty_zero_page + + (PAGE_SIZE << order)))) { + SetPageReserved(page); + page++; + } + + size = PAGE_SIZE << order; + zero_page_mask = (size - 1) & PAGE_MASK; + + return 1UL << order; +} + +#ifndef CONFIG_NEED_MULTIPLE_NODES +static int __init page_is_ram(unsigned long pagenr) +{ + if (pagenr >= min_low_pfn && pagenr < max_low_pfn) + return 1; + else + return 0; +} + +void __init paging_init(void) +{ + unsigned long max_zone_pfns[MAX_NR_ZONES]; + unsigned long lastpfn; + + pagetable_init(); + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; + lastpfn = max_low_pfn; + free_area_init_nodes(max_zone_pfns); +} + +void __init mem_init(void) +{ + unsigned long codesize, reservedpages, datasize, initsize; + unsigned long tmp, ram = 0; + + max_mapnr = max_low_pfn; + high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT); + totalram_pages += free_all_bootmem(); + totalram_pages -= setup_zero_pages(); /* Setup zeroed pages. */ + reservedpages = 0; + + for (tmp = 0; tmp < max_low_pfn; tmp++) + if (page_is_ram(tmp)) { + ram++; + if (PageReserved(pfn_to_page(tmp))) + reservedpages++; + } + + num_physpages = ram; + codesize = (unsigned long) &_etext - (unsigned long) &_text; + datasize = (unsigned long) &_edata - (unsigned long) &_etext; + initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin; + + kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT); + kclist_add(&kcore_vmalloc, (void *) VMALLOC_START, + VMALLOC_END - VMALLOC_START); + + printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, " + "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n", + (unsigned long) nr_free_pages() << (PAGE_SHIFT-10), + ram << (PAGE_SHIFT-10), codesize >> 10, + reservedpages << (PAGE_SHIFT-10), datasize >> 10, + initsize >> 10, + (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); +} +#endif /* !CONFIG_NEED_MULTIPLE_NODES */ + +void free_init_pages(const char *what, unsigned long begin, unsigned long end) +{ + unsigned long pfn; + + for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) { + struct page *page = pfn_to_page(pfn); + void *addr = phys_to_virt(PFN_PHYS(pfn)); + + ClearPageReserved(page); + init_page_count(page); + memset(addr, POISON_FREE_INITMEM, PAGE_SIZE); + __free_page(page); + totalram_pages++; + } + printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10); +} + +#ifdef CONFIG_BLK_DEV_INITRD +void free_initrd_mem(unsigned long start, unsigned long end) +{ + free_init_pages("initrd memory", + virt_to_phys((void *) start), + virt_to_phys((void *) end)); +} +#endif + +void __init_refok free_initmem(void) +{ + free_init_pages("unused kernel memory", + (unsigned long)__init_begin, (unsigned long)__init_end); +} + +unsigned long pgd_current; + +#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order))) + +/* + * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER + * are constants. So we use the variants from asm-offset.h until that gcc + * will officially be retired. + */ +pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER); diff --git a/arch/score/mm/pgtable.c b/arch/score/mm/pgtable.c new file mode 100644 index 000000000000..10b0962f83d4 --- /dev/null +++ b/arch/score/mm/pgtable.c @@ -0,0 +1,60 @@ +/* + * arch/score/mm/pgtable-32.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/bootmem.h> +#include <linux/init.h> +#include <linux/pfn.h> +#include <linux/mm.h> + +void pgd_init(unsigned long page) +{ + unsigned long *p = (unsigned long *) page; + int i; + + for (i = 0; i < USER_PTRS_PER_PGD; i += 8) { + p[i + 0] = (unsigned long) invalid_pte_table; + p[i + 1] = (unsigned long) invalid_pte_table; + p[i + 2] = (unsigned long) invalid_pte_table; + p[i + 3] = (unsigned long) invalid_pte_table; + p[i + 4] = (unsigned long) invalid_pte_table; + p[i + 5] = (unsigned long) invalid_pte_table; + p[i + 6] = (unsigned long) invalid_pte_table; + p[i + 7] = (unsigned long) invalid_pte_table; + } +} + +void __init pagetable_init(void) +{ + unsigned long vaddr; + pgd_t *pgd_base; + + /* Initialize the entire pgd. */ + pgd_init((unsigned long) swapper_pg_dir); + pgd_init((unsigned long) swapper_pg_dir + + sizeof(pgd_t) * USER_PTRS_PER_PGD); + + pgd_base = swapper_pg_dir; + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; +} diff --git a/arch/score/mm/tlb-miss.S b/arch/score/mm/tlb-miss.S new file mode 100644 index 000000000000..f27651914e8d --- /dev/null +++ b/arch/score/mm/tlb-miss.S @@ -0,0 +1,199 @@ +/* + * arch/score/mm/tlbex.S + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <asm/asmmacro.h> +#include <asm/pgtable-bits.h> +#include <asm/scoreregs.h> + +/* +* After this macro runs, the pte faulted on is +* in register PTE, a ptr into the table in which +* the pte belongs is in PTR. +*/ + .macro load_pte, pte, ptr + la \ptr, pgd_current + lw \ptr, [\ptr, 0] + mfcr \pte, cr6 + srli \pte, \pte, 22 + slli \pte, \pte, 2 + add \ptr, \ptr, \pte + lw \ptr, [\ptr, 0] + mfcr \pte, cr6 + srli \pte, \pte, 10 + andi \pte, 0xffc + add \ptr, \ptr, \pte + lw \pte, [\ptr, 0] + .endm + + .macro pte_reload, ptr + lw \ptr, [\ptr, 0] + mtcr \ptr, cr12 + nop + nop + nop + nop + nop + .endm + + .macro do_fault, write + SAVE_ALL + mfcr r6, cr6 + mv r4, r0 + ldi r5, \write + la r8, do_page_fault + brl r8 + j ret_from_exception + .endm + + .macro pte_writable, pte, ptr, label + andi \pte, 0x280 + cmpi.c \pte, 0x280 + bne \label + lw \pte, [\ptr, 0] /*reload PTE*/ + .endm + +/* + * Make PTE writable, update software status bits as well, + * then store at PTR. + */ + .macro pte_makewrite, pte, ptr + ori \pte, 0x426 + sw \pte, [\ptr, 0] + .endm + + .text +ENTRY(score7_FTLB_refill_Handler) + la r31, pgd_current /* get pgd pointer */ + lw r31, [r31, 0] /* get the address of PGD */ + mfcr r30, cr6 + srli r30, r30, 22 /* PGDIR_SHIFT = 22*/ + slli r30, r30, 2 + add r31, r31, r30 + lw r31, [r31, 0] /* get the address of the start address of PTE table */ + + mfcr r30, cr9 + andi r30, 0xfff /* equivalent to get PET index and right shift 2 bits */ + add r31, r31, r30 + lw r30, [r31, 0] /* load pte entry */ + mtcr r30, cr12 + nop + nop + nop + nop + nop + mtrtlb + nop + nop + nop + nop + nop + rte /* 6 cycles to make sure tlb entry works */ + +ENTRY(score7_KSEG_refill_Handler) + la r31, pgd_current /* get pgd pointer */ + lw r31, [r31, 0] /* get the address of PGD */ + mfcr r30, cr6 + srli r30, r30, 22 /* PGDIR_SHIFT = 22 */ + slli r30, r30, 2 + add r31, r31, r30 + lw r31, [r31, 0] /* get the address of the start address of PTE table */ + + mfcr r30, cr6 /* get Bad VPN */ + srli r30, r30, 10 + andi r30, 0xffc /* PTE VPN mask (bit 11~2) */ + + add r31, r31, r30 + lw r30, [r31, 0] /* load pte entry */ + mtcr r30, cr12 + nop + nop + nop + nop + nop + mtrtlb + nop + nop + nop + nop + nop + rte /* 6 cycles to make sure tlb entry works */ + +nopage_tlbl: + do_fault 0 /* Read */ + +ENTRY(handle_tlb_refill) + load_pte r30, r31 + pte_writable r30, r31, handle_tlb_refill_nopage + pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */ + pte_reload r31 + mtrtlb + nop + nop + nop + nop + nop + rte +handle_tlb_refill_nopage: + do_fault 0 /* Read */ + +ENTRY(handle_tlb_invaild) + load_pte r30, r31 + stlb /* find faulting entry */ + pte_writable r30, r31, handle_tlb_invaild_nopage + pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */ + pte_reload r31 + mtptlb + nop + nop + nop + nop + nop + rte +handle_tlb_invaild_nopage: + do_fault 0 /* Read */ + +ENTRY(handle_mod) + load_pte r30, r31 + stlb /* find faulting entry */ + andi r30, _PAGE_WRITE /* Writable? */ + cmpz.c r30 + beq nowrite_mod + lw r30, [r31, 0] /* reload into r30 */ + + /* Present and writable bits set, set accessed and dirty bits. */ + pte_makewrite r30, r31 + + /* Now reload the entry into the tlb. */ + pte_reload r31 + mtptlb + nop + nop + nop + nop + nop + rte + +nowrite_mod: + do_fault 1 /* Write */ diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c new file mode 100644 index 000000000000..4fa5aa5afecc --- /dev/null +++ b/arch/score/mm/tlb-score.c @@ -0,0 +1,251 @@ +/* + * arch/score/mm/tlb-score.c + * + * Score Processor version. + * + * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. + * Lennox Wu <lennox.wu@sunplusct.com> + * Chen Liqin <liqin.chen@sunplusct.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/highmem.h> +#include <linux/module.h> + +#include <asm/irq.h> +#include <asm/mmu_context.h> +#include <asm/tlb.h> + +#define TLBSIZE 32 + +unsigned long asid_cache = ASID_FIRST_VERSION; +EXPORT_SYMBOL(asid_cache); + +void local_flush_tlb_all(void) +{ + unsigned long flags; + unsigned long old_ASID; + int entry; + + local_irq_save(flags); + old_ASID = pevn_get() & ASID_MASK; + pectx_set(0); /* invalid */ + entry = tlblock_get(); /* skip locked entries*/ + + for (; entry < TLBSIZE; entry++) { + tlbpt_set(entry); + pevn_set(KSEG1); + barrier(); + tlb_write_indexed(); + } + pevn_set(old_ASID); + local_irq_restore(flags); +} + +/* + * If mm is currently active_mm, we can't really drop it. Instead, + * we will get a new one for it. + */ +static inline void +drop_mmu_context(struct mm_struct *mm) +{ + unsigned long flags; + + local_irq_save(flags); + get_new_mmu_context(mm); + pevn_set(mm->context & ASID_MASK); + local_irq_restore(flags); +} + +void local_flush_tlb_mm(struct mm_struct *mm) +{ + if (mm->context != 0) + drop_mmu_context(mm); +} + +void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end) +{ + struct mm_struct *mm = vma->vm_mm; + unsigned long vma_mm_context = mm->context; + if (mm->context != 0) { + unsigned long flags; + int size; + + local_irq_save(flags); + size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT; + if (size <= TLBSIZE) { + int oldpid = pevn_get() & ASID_MASK; + int newpid = vma_mm_context & ASID_MASK; + + start &= PAGE_MASK; + end += (PAGE_SIZE - 1); + end &= PAGE_MASK; + while (start < end) { + int idx; + + pevn_set(start | newpid); + start += PAGE_SIZE; + barrier(); + tlb_probe(); + idx = tlbpt_get(); + pectx_set(0); + pevn_set(KSEG1); + if (idx < 0) + continue; + tlb_write_indexed(); + } + pevn_set(oldpid); + } else { + /* Bigger than TLBSIZE, get new ASID directly */ + get_new_mmu_context(mm); + if (mm == current->active_mm) + pevn_set(vma_mm_context & ASID_MASK); + } + local_irq_restore(flags); + } +} + +void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + unsigned long flags; + int size; + + local_irq_save(flags); + size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT; + if (size <= TLBSIZE) { + int pid = pevn_get(); + + start &= PAGE_MASK; + end += PAGE_SIZE - 1; + end &= PAGE_MASK; + + while (start < end) { + long idx; + + pevn_set(start); + start += PAGE_SIZE; + tlb_probe(); + idx = tlbpt_get(); + if (idx < 0) + continue; + pectx_set(0); + pevn_set(KSEG1); + barrier(); + tlb_write_indexed(); + } + pevn_set(pid); + } else { + local_flush_tlb_all(); + } + + local_irq_restore(flags); +} + +void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) +{ + if (!vma || vma->vm_mm->context != 0) { + unsigned long flags; + int oldpid, newpid, idx; + unsigned long vma_ASID = vma->vm_mm->context; + + newpid = vma_ASID & ASID_MASK; + page &= PAGE_MASK; + local_irq_save(flags); + oldpid = pevn_get() & ASID_MASK; + pevn_set(page | newpid); + barrier(); + tlb_probe(); + idx = tlbpt_get(); + pectx_set(0); + pevn_set(KSEG1); + if (idx < 0) /* p_bit(31) - 1: miss, 0: hit*/ + goto finish; + barrier(); + tlb_write_indexed(); +finish: + pevn_set(oldpid); + local_irq_restore(flags); + } +} + +/* + * This one is only used for pages with the global bit set so we don't care + * much about the ASID. + */ +void local_flush_tlb_one(unsigned long page) +{ + unsigned long flags; + int oldpid, idx; + + local_irq_save(flags); + oldpid = pevn_get(); + page &= (PAGE_MASK << 1); + pevn_set(page); + barrier(); + tlb_probe(); + idx = tlbpt_get(); + pectx_set(0); + if (idx >= 0) { + /* Make sure all entries differ. */ + pevn_set(KSEG1); + barrier(); + tlb_write_indexed(); + } + pevn_set(oldpid); + local_irq_restore(flags); +} + +void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte) +{ + unsigned long flags; + int idx, pid; + + /* + * Handle debugger faulting in for debugee. + */ + if (current->active_mm != vma->vm_mm) + return; + + pid = pevn_get() & ASID_MASK; + + local_irq_save(flags); + address &= PAGE_MASK; + pevn_set(address | pid); + barrier(); + tlb_probe(); + idx = tlbpt_get(); + pectx_set(pte_val(pte)); + pevn_set(address | pid); + if (idx < 0) + tlb_write_random(); + else + tlb_write_indexed(); + + pevn_set(pid); + local_irq_restore(flags); +} + +void __cpuinit tlb_init(void) +{ + tlblock_set(0); + local_flush_tlb_all(); + memcpy((void *)(EXCEPTION_VECTOR_BASE_ADDR + 0x100), + &score7_FTLB_refill_Handler, 0xFC); + flush_icache_range(EXCEPTION_VECTOR_BASE_ADDR + 0x100, + EXCEPTION_VECTOR_BASE_ADDR + 0x1FC); +} |