# SPDX-License-Identifier: GPL-2.0-only config 64BIT bool "64-bit kernel" if "$(ARCH)" = "sparc" default "$(ARCH)" = "sparc64" help SPARC is a family of RISC microprocessors designed and marketed by Sun Microsystems, incorporated. They are very widely found in Sun workstations and clones. Say yes to build a 64-bit kernel - formerly known as sparc64 Say no to build a 32-bit kernel - formerly known as sparc config SPARC bool default y select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI select ARCH_MIGHT_HAVE_PC_SERIO select OF select OF_PROMTREE select HAVE_IDE select HAVE_OPROFILE select HAVE_ARCH_KGDB if !SMP || SPARC64 select HAVE_ARCH_TRACEHOOK select HAVE_EXIT_THREAD select HAVE_PCI select SYSCTL_EXCEPTION_TRACE select RTC_CLASS select RTC_DRV_M48T59 select RTC_SYSTOHC select HAVE_ARCH_JUMP_LABEL if SPARC64 select GENERIC_IRQ_SHOW select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_PCI_IOMAP select HAVE_NMI_WATCHDOG if SPARC64 select HAVE_CBPF_JIT if SPARC32 select HAVE_EBPF_JIT if SPARC64 select HAVE_DEBUG_BUGVERBOSE select GENERIC_SMP_IDLE_THREAD select GENERIC_CLOCKEVENTS select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select MODULES_USE_ELF_RELA select PCI_SYSCALL if PCI select ODD_RT_SIGACTION select OLD_SIGSUSPEND select CPU_NO_EFFICIENT_FFS select LOCKDEP_SMALL if LOCKDEP select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH config SPARC32 def_bool !64BIT select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_CPU select GENERIC_ATOMIC64 select CLZ_TAB select HAVE_UID16 select OLD_SIGACTION config SPARC64 def_bool 64BIT select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_KRETPROBES select HAVE_KPROBES select HAVE_RCU_TABLE_FREE if SMP select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE select HAVE_MEMBLOCK_NODE_MAP select HAVE_ARCH_TRANSPARENT_HUGEPAGE select HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD select HAVE_SYSCALL_TRACEPOINTS select HAVE_CONTEXT_TRACKING select HAVE_DEBUG_KMEMLEAK select IOMMU_HELPER select SPARSE_IRQ select RTC_DRV_CMOS select RTC_DRV_BQ4802 select RTC_DRV_SUN4V select RTC_DRV_STARFIRE select HAVE_PERF_EVENTS select PERF_USE_VMALLOC select IRQ_PREFLOW_FASTEOI select ARCH_HAVE_NMI_SAFE_CMPXCHG select HAVE_C_RECORDMCOUNT select HAVE_ARCH_AUDITSYSCALL select ARCH_SUPPORTS_ATOMIC_RMW select HAVE_NMI select HAVE_REGS_AND_STACK_ACCESS_API select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS select GENERIC_TIME_VSYSCALL select ARCH_CLOCKSOURCE_DATA select ARCH_HAS_PTE_SPECIAL select PCI_DOMAINS if PCI select ARCH_HAS_GIGANTIC_PAGE config ARCH_DEFCONFIG string default "arch/sparc/configs/sparc32_defconfig" if SPARC32 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 config ARCH_PROC_KCORE_TEXT def_bool y config CPU_BIG_ENDIAN def_bool y config ARCH_ATU bool default y if SPARC64 config STACKTRACE_SUPPORT bool default y if SPARC64 config LOCKDEP_SUPPORT bool default y if SPARC64 config ARCH_HIBERNATION_POSSIBLE def_bool y if SPARC64 config AUDIT_ARCH bool default y config HAVE_SETUP_PER_CPU_AREA def_bool y if SPARC64 config NEED_PER_CPU_EMBED_FIRST_CHUNK def_bool y if SPARC64 config NEED_PER_CPU_PAGE_FIRST_CHUNK def_bool y if SPARC64 config MMU bool default y config HIGHMEM bool default y if SPARC32 config ZONE_DMA bool default y if SPARC32 config GENERIC_ISA_DMA bool default y if SPARC32 config ARCH_SUPPORTS_DEBUG_PAGEALLOC def_bool y if SPARC64 config PGTABLE_LEVELS default 4 if 64BIT default 3 config ARCH_SUPPORTS_UPROBES def_bool y if SPARC64 menu "Processor type and features" config SMP bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y. If you say N here, the kernel will run on uni- and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, uniprocessor machines. On a uniprocessor machine, the kernel will run faster if you say N here. People using multiprocessor machines who say Y here should also say Y to "Enhanced Real Time Clock Support", below. The "Advanced Power Management" code will be disabled if you say Y here. See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs" depends on SMP range 2 32 if SPARC32 range 2 4096 if SPARC64 default 32 if SPARC32 default 4096 if SPARC64 source "kernel/Kconfig.hz" config GENERIC_HWEIGHT bool default y config GENERIC_CALIBRATE_DELAY bool default y config ARCH_MAY_HAVE_PC_FDC bool default y config EMULATED_CMPXCHG bool default y if SPARC32 help Sparc32 does not have a CAS instruction like sparc64. cmpxchg() is emulated, and therefore it is not completely atomic. # Makefile helpers config SPARC32_SMP bool default y depends on SPARC32 && SMP config SPARC64_SMP bool default y depends on SPARC64 && SMP config EARLYFB bool "Support for early boot text console" default y depends on SPARC64 help Say Y here to enable a faster early framebuffer boot console. config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on SPARC64 && PROC_FS default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc/<pid>/seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" depends on SPARC64 && SMP help Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu/cpu#. Say N if you want to disable CPU hotplug. if SPARC64 source "drivers/cpufreq/Kconfig" endif config US3_MC tristate "UltraSPARC-III Memory Controller driver" depends on SPARC64 default y help This adds a driver for the UltraSPARC-III memory controller. Loading this driver allows exact mnemonic strings to be printed in the event of a memory error, so that the faulty DIMM on the motherboard can be matched to the error. If in doubt, say Y, as this information can be very useful. # Global things across all Sun machines. config GENERIC_LOCKBREAK bool default y depends on SPARC64 && SMP && PREEMPT config NUMA bool "NUMA support" depends on SPARC64 && SMP config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" range 4 5 if SPARC64 default "5" depends on NEED_MULTIPLE_NODES help Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. # Some NUMA nodes have memory ranges that span # other nodes. Even though a pfn is valid and # between a node's start and end pfns, it may not # reside on that node. See memmap_init_zone() # for details. config NODES_SPAN_OTHER_NODES def_bool y depends on NEED_MULTIPLE_NODES config ARCH_SELECT_MEMORY_MODEL def_bool y if SPARC64 config ARCH_SPARSEMEM_ENABLE def_bool y if SPARC64 select SPARSEMEM_VMEMMAP_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y if SPARC64 config FORCE_MAX_ZONEORDER int "Maximum zone order" default "13" help The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value. This config option is actually maximum order plus one. For example, a value of 13 means that the largest free memory block is 2^12 pages. if SPARC64 source "kernel/power/Kconfig" endif config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" depends on SPARC64 && SMP default y help SMT scheduler support improves the CPU scheduler's decision making when dealing with SPARC cpus at a cost of slightly increased overhead in some places. If unsure say N here. config SCHED_MC bool "Multi-core scheduler support" depends on SPARC64 && SMP default y help Multi-core scheduler support improves the CPU scheduler's decision making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here. config CMDLINE_BOOL bool "Default bootloader kernel arguments" depends on SPARC64 config CMDLINE string "Initial kernel command string" depends on CMDLINE_BOOL default "console=ttyS0,9600 root=/dev/sda1" help Say Y here if you want to be able to pass default arguments to the kernel. This will be overridden by the bootloader, if you use one (such as SILO). This is most useful if you want to boot a kernel from TFTP, and want default options to be available with having them passed on the command line. NOTE: This option WILL override the PROM bootargs setting! config SUN_PM bool default y if SPARC32 help Enable power management and CPU standby features on supported SPARC platforms. config SPARC_LED tristate "Sun4m LED driver" depends on SPARC32 help This driver toggles the front-panel LED on sun4m systems in a user-specifiable manner. Its state can be probed by reading /proc/led and its blinking mode can be changed via writes to /proc/led config SERIAL_CONSOLE bool depends on SPARC32 default y ---help--- If you say Y here, it will be possible to use a serial port as the system console (the system console is the device which receives all kernel messages and warnings and which allows logins in single user mode). This could be useful if some terminal or printer is connected to that serial port. Even if you say Y here, the currently visible virtual console (/dev/tty0) will still be used as the system console by default, but you can alter that using a kernel command line option such as "console=ttyS1". (Try "man bootparam" or see the documentation of your boot loader (silo) about how to pass options to the kernel at boot time.) If you don't have a graphics card installed and you say Y here, the kernel will automatically use the first serial line, /dev/ttyS0, as system console. If unsure, say N. config SPARC_LEON bool "Sparc Leon processor family" depends on SPARC32 select USB_EHCI_BIG_ENDIAN_MMIO select USB_EHCI_BIG_ENDIAN_DESC select USB_UHCI_BIG_ENDIAN_MMIO select USB_UHCI_BIG_ENDIAN_DESC ---help--- If you say Y here if you are running on a SPARC-LEON processor. The LEON processor is a synthesizable VHDL model of the SPARC-v8 standard. LEON is part of the GRLIB collection of IP cores that are distributed under GPL. GRLIB can be downloaded from www.gaisler.com. You can download a sparc-linux cross-compilation toolchain at www.gaisler.com. if SPARC_LEON menu "U-Boot options" config UBOOT_LOAD_ADDR hex "uImage Load Address" default 0x40004000 ---help--- U-Boot kernel load address, the address in physical address space where u-boot will place the Linux kernel before booting it. This address is normally the base address of main memory + 0x4000. config UBOOT_FLASH_ADDR hex "uImage.o Load Address" default 0x00080000 ---help--- Optional setting only affecting the uImage.o ELF-image used to download the uImage file to the target using a ELF-loader other than U-Boot. It may for example be used to download an uImage to FLASH with the GRMON utility before even starting u-boot. config UBOOT_ENTRY_ADDR hex "uImage Entry Address" default 0xf0004000 ---help--- Do not change this unless you know what you're doing. This is hardcoded by the SPARC32 and LEON port. This is the virtual address u-boot jumps to when booting the Linux Kernel. endmenu endif endmenu menu "Bus options (PCI etc.)" config SBUS bool default y config SBUSCHAR bool default y config SUN_LDOMS bool "Sun Logical Domains support" depends on SPARC64 help Say Y here is you want to support virtual devices via Logical Domains. config PCIC_PCI bool depends on PCI && SPARC32 && !SPARC_LEON default y config LEON_PCI bool depends on PCI && SPARC_LEON default y config SPARC_GRPCI1 bool "GRPCI Host Bridge Support" depends on LEON_PCI default y help Say Y here to include the GRPCI Host Bridge Driver. The GRPCI PCI host controller is typically found in GRLIB SPARC32/LEON systems. The driver has one property (all_pci_errors) controlled from the bootloader that makes the GRPCI to generate interrupts on detected PCI Parity and System errors. config SPARC_GRPCI2 bool "GRPCI2 Host Bridge Support" depends on LEON_PCI default y help Say Y here to include the GRPCI2 Host Bridge Driver. config SUN_OPENPROMFS tristate "Openprom tree appears in /proc/openprom" help If you say Y, the OpenPROM device tree will be available as a virtual file system, which you can mount to /proc/openprom by "mount -t openpromfs none /proc/openprom". To compile the /proc/openprom support as a module, choose M here: the module will be called openpromfs. Only choose N if you know in advance that you will not need to modify OpenPROM settings on the running system. # Makefile helpers config SPARC64_PCI bool default y depends on SPARC64 && PCI config SPARC64_PCI_MSI bool default y depends on SPARC64_PCI && PCI_MSI endmenu config COMPAT bool depends on SPARC64 default y select COMPAT_BINFMT_ELF select HAVE_UID16 select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION config SYSVIPC_COMPAT bool depends on COMPAT && SYSVIPC default y source "drivers/sbus/char/Kconfig"