diff options
author | Greg Ungerer <gerg@uclinux.org> | 2011-03-22 06:39:27 +0300 |
---|---|---|
committer | Greg Ungerer <gerg@uclinux.org> | 2011-03-25 07:05:13 +0300 |
commit | 66d857b08b8c3ed5c72c361f863cce77d2a978d7 (patch) | |
tree | 47222d86f4d78dc0da31baf64188bd2e4b38ac1e /arch/m68k/platform/68328 | |
parent | d39dd11c3e6a7af5c20bfac40594db36cf270f42 (diff) | |
download | linux-66d857b08b8c3ed5c72c361f863cce77d2a978d7.tar.xz |
m68k: merge m68k and m68knommu arch directories
There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.
This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.
> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif
On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.
With this in place there is now quite a bit of scope for merge cleanups
in future patches.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/platform/68328')
-rw-r--r-- | arch/m68k/platform/68328/Makefile | 22 | ||||
-rw-r--r-- | arch/m68k/platform/68328/bootlogo.h | 270 | ||||
-rw-r--r-- | arch/m68k/platform/68328/bootlogo.pl | 10 | ||||
-rw-r--r-- | arch/m68k/platform/68328/config.c | 52 | ||||
-rw-r--r-- | arch/m68k/platform/68328/entry.S | 263 | ||||
-rw-r--r-- | arch/m68k/platform/68328/head-de2.S | 128 | ||||
-rw-r--r-- | arch/m68k/platform/68328/head-pilot.S | 222 | ||||
-rw-r--r-- | arch/m68k/platform/68328/head-ram.S | 141 | ||||
-rw-r--r-- | arch/m68k/platform/68328/head-rom.S | 110 | ||||
-rw-r--r-- | arch/m68k/platform/68328/ints.c | 186 | ||||
-rw-r--r-- | arch/m68k/platform/68328/romvec.S | 35 | ||||
-rw-r--r-- | arch/m68k/platform/68328/timers.c | 134 |
12 files changed, 1573 insertions, 0 deletions
diff --git a/arch/m68k/platform/68328/Makefile b/arch/m68k/platform/68328/Makefile new file mode 100644 index 000000000000..5e5435552d56 --- /dev/null +++ b/arch/m68k/platform/68328/Makefile @@ -0,0 +1,22 @@ +# +# Makefile for arch/m68knommu/platform/68328. +# + +head-y = head-$(MODEL).o +head-$(CONFIG_PILOT) = head-pilot.o +head-$(CONFIG_DRAGEN2) = head-de2.o + +obj-y += entry.o ints.o timers.o +obj-$(CONFIG_M68328) += config.o +obj-$(CONFIG_ROM) += romvec.o + +extra-y := head.o +extra-$(CONFIG_M68328) += bootlogo.rh head.o + +$(obj)/bootlogo.rh: $(src)/bootlogo.h + perl $(src)/bootlogo.pl < $(src)/bootlogo.h > $(obj)/bootlogo.rh + +$(obj)/head.o: $(obj)/$(head-y) + ln -sf $(head-y) $(obj)/head.o + +clean-files := $(obj)/bootlogo.rh $(obj)/head.o $(head-y) diff --git a/arch/m68k/platform/68328/bootlogo.h b/arch/m68k/platform/68328/bootlogo.h new file mode 100644 index 000000000000..67bc2c17386e --- /dev/null +++ b/arch/m68k/platform/68328/bootlogo.h @@ -0,0 +1,270 @@ +#define bootlogo_width 160 +#define bootlogo_height 160 +static unsigned char bootlogo_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x40, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x55, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xa0, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x02, 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0xfc, 0xff, 0x1f, 0x80, 0x22, 0x00, 0x90, 0x24, 0x49, + 0x12, 0x92, 0x40, 0xb2, 0x24, 0x09, 0xc9, 0x49, 0x04, 0x80, 0x90, 0xfc, + 0xff, 0xbf, 0x24, 0x00, 0x00, 0x90, 0x24, 0x49, 0x12, 0x92, 0x40, 0x92, + 0x24, 0x06, 0x49, 0x48, 0x50, 0x0a, 0x02, 0xfe, 0xff, 0x3f, 0x00, 0x05, + 0x00, 0x50, 0xa5, 0x4a, 0x15, 0x92, 0x40, 0x92, 0x24, 0x06, 0x49, 0x48, + 0x80, 0x40, 0x48, 0xfe, 0xff, 0x3f, 0x49, 0x00, 0x00, 0x20, 0x42, 0x84, + 0x88, 0x1a, 0x41, 0x92, 0x34, 0x49, 0x49, 0x68, 0x00, 0x38, 0x10, 0x07, + 0x00, 0x60, 0x80, 0x00, 0x00, 0x20, 0x42, 0x84, 0x88, 0x14, 0x4e, 0x92, + 0x28, 0x49, 0x46, 0x50, 0x00, 0x80, 0x83, 0x01, 0x00, 0xa0, 0x6a, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, + 0x00, 0x00, 0xfc, 0x00, 0x00, 0xc0, 0x3b, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, }; diff --git a/arch/m68k/platform/68328/bootlogo.pl b/arch/m68k/platform/68328/bootlogo.pl new file mode 100644 index 000000000000..b04ae3f50da5 --- /dev/null +++ b/arch/m68k/platform/68328/bootlogo.pl @@ -0,0 +1,10 @@ + +$_ = join("", <>); + +s/(0x[0-9a-f]{2})/sprintf("0x%.2x",ord(pack("b8",unpack("B8",chr(hex($1))))))/gei; + +s/^ / .byte /gm; +s/[,};]+$//gm; +s/^static.*//gm; + +print $_; diff --git a/arch/m68k/platform/68328/config.c b/arch/m68k/platform/68328/config.c new file mode 100644 index 000000000000..a7bd21deb00f --- /dev/null +++ b/arch/m68k/platform/68328/config.c @@ -0,0 +1,52 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68328/config.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * + * 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. + * + * VZ Support/Fixes Evan Stawnyczy <e@lineo.ca> + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <asm/system.h> +#include <asm/machdep.h> +#include <asm/MC68328.h> + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec); + +/***************************************************************************/ + +void m68328_reset (void) +{ + local_irq_disable(); + asm volatile ("moveal #0x10c00000, %a0;\n\t" + "moveb #0, 0xFFFFF300;\n\t" + "moveal 0(%a0), %sp;\n\t" + "moveal 4(%a0), %a0;\n\t" + "jmp (%a0);"); +} + +/***************************************************************************/ + +void config_BSP(char *command, int len) +{ + printk(KERN_INFO "\n68328 support D. Jeff Dionne <jeff@uclinux.org>\n"); + printk(KERN_INFO "68328 support Kenneth Albanowski <kjahds@kjshds.com>\n"); + printk(KERN_INFO "68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n"); + + mach_gettod = m68328_timer_gettod; + mach_reset = m68328_reset; +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/68328/entry.S b/arch/m68k/platform/68328/entry.S new file mode 100644 index 000000000000..676960cf022a --- /dev/null +++ b/arch/m68k/platform/68328/entry.S @@ -0,0 +1,263 @@ +/* + * linux/arch/m68knommu/platform/68328/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/thread_info.h> +#include <asm/unistd.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/traps.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +.text + +.globl system_call +.globl resume +.globl ret_from_exception +.globl ret_from_signal +.globl sys_call_table +.globl ret_from_interrupt +.globl bad_interrupt +.globl inthandler1 +.globl inthandler2 +.globl inthandler3 +.globl inthandler4 +.globl inthandler5 +.globl inthandler6 +.globl inthandler7 + +badsys: + movel #-ENOSYS,%sp@(PT_OFF_D0) + jra ret_from_exception + +do_trace: + movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/ + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace_enter + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_OFF_ORIG_D0),%d1 + movel #-ENOSYS,%d0 + cmpl #NR_syscalls,%d1 + jcc 1f + lsl #2,%d1 + lea sys_call_table, %a0 + jbsr %a0@(%d1) + +1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */ + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + jbsr syscall_trace_leave + +ret_from_signal: + RESTORE_SWITCH_STACK + addql #4,%sp + jra ret_from_exception + +ENTRY(system_call) + SAVE_ALL + + /* save top of frame*/ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + + movel %sp@(PT_OFF_ORIG_D0),%d0 + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 + btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + jne do_trace + cmpl #NR_syscalls,%d0 + jcc badsys + lsl #2,%d0 + lea sys_call_table,%a0 + movel %a0@(%d0), %a0 + jbsr %a0@ + movel %d0,%sp@(PT_OFF_D0) /* save the return value*/ + +ret_from_exception: + btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel*/ + jeq Luser_return /* if so, skip resched, signals*/ + +Lkernel_return: + RESTORE_ALL + +Luser_return: + /* only allow interrupts when we are really the last one on the*/ + /* kernel stack, otherwise stack overflow can occur during*/ + /* heavy interrupt load*/ + andw #ALLOWINT,%sr + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 +1: + move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + jne Lwork_to_do + RESTORE_ALL + +Lwork_to_do: + movel %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + btst #TIF_NEED_RESCHED,%d1 + jne reschedule + +Lsignal_return: + subql #4,%sp /* dummy return address*/ + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + bsrw do_signal + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jra 1b + +/* + * This is the main interrupt handler, responsible for calling process_int() + */ +inthandler1: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #65,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler2: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #66,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler3: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #67,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler4: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #68,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler5: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #69,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler6: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #70,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler7: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #71,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel %d0,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +ret_from_interrupt: + jeq 1f +2: + RESTORE_ALL +1: + moveb %sp@(PT_OFF_SR), %d0 + and #7, %d0 + jhi 2b + + /* check if we need to do software interrupts */ + jeq ret_from_exception + + pea ret_from_exception + jra do_softirq + + +/* + * Handler for uninitialized and spurious interrupts. + */ +ENTRY(bad_interrupt) + addql #1,num_spurious + rte + +/* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + */ +ENTRY(resume) + movel %a0,%d1 /* save prev thread in d1 */ + movew %sr,%a0@(TASK_THREAD+THREAD_SR) /* save sr */ + movel %usp,%a2 /* save usp */ + movel %a2,%a0@(TASK_THREAD+THREAD_USP) + + SAVE_SWITCH_STACK + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new thread stack */ + RESTORE_SWITCH_STACK + + movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore user stack */ + movel %a0,%usp + movew %a1@(TASK_THREAD+THREAD_SR),%sr /* restore thread status reg */ + rts + diff --git a/arch/m68k/platform/68328/head-de2.S b/arch/m68k/platform/68328/head-de2.S new file mode 100644 index 000000000000..f632fdcb93e9 --- /dev/null +++ b/arch/m68k/platform/68328/head-de2.S @@ -0,0 +1,128 @@ + +#define MEM_END 0x00800000 /* Memory size 8Mb */ + +#undef CRT_DEBUG + +.macro PUTC CHAR +#ifdef CRT_DEBUG + moveq #\CHAR, %d7 + jsr putc +#endif +.endm + + .global _start + .global _rambase + .global _ramvec + .global _ramstart + .global _ramend + + .data + +/* + * Set up the usable of RAM stuff + */ +_rambase: + .long 0 +_ramvec: + .long 0 +_ramstart: + .long 0 +_ramend: + .long 0 + + .text + +_start: + +/* + * Setup initial stack + */ + /* disable all interrupts */ + movew #0x2700, %sr + movel #-1, 0xfffff304 + movel #MEM_END-4, %sp + + PUTC '\r' + PUTC '\n' + PUTC 'A' + PUTC 'B' + +/* + * Determine end of RAM + */ + + movel #MEM_END, %a0 + movel %a0, _ramend + + PUTC 'C' + +/* + * Move ROM filesystem above bss :-) + */ + + moveal #_sbss, %a0 /* romfs at the start of bss */ + moveal #_ebss, %a1 /* Set up destination */ + movel %a0, %a2 /* Copy of bss start */ + + movel 8(%a0), %d1 /* Get size of ROMFS */ + addql #8, %d1 /* Allow for rounding */ + andl #0xfffffffc, %d1 /* Whole words */ + + addl %d1, %a0 /* Copy from end */ + addl %d1, %a1 /* Copy from end */ + movel %a1, _ramstart /* Set start of ram */ + +1: + movel -(%a0), %d0 /* Copy dword */ + movel %d0, -(%a1) + cmpl %a0, %a2 /* Check if at end */ + bne 1b + + PUTC 'D' + +/* + * Initialize BSS segment to 0 + */ + + lea _sbss, %a0 + lea _ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +2: cmpal %a0, %a1 + beq 1f + clrl (%a0)+ + bra 2b +1: + + PUTC 'E' + +/* + * Load the current task pointer and stack + */ + + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + + PUTC 'F' + PUTC '\r' + PUTC '\n' + +/* + * Go + */ + + jmp start_kernel + +/* + * Local functions + */ + +#ifdef CRT_DEBUG +putc: + moveb %d7, 0xfffff907 +1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq 1b + rts +#endif diff --git a/arch/m68k/platform/68328/head-pilot.S b/arch/m68k/platform/68328/head-pilot.S new file mode 100644 index 000000000000..aecff532b343 --- /dev/null +++ b/arch/m68k/platform/68328/head-pilot.S @@ -0,0 +1,222 @@ +/* + * linux/arch/m68knommu/platform/68328/head-pilot.S + * - A startup file for the MC68328 + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * The Silver Hammer Group, Ltd. + * + * (c) 1995, Dionne & Associates + * (c) 1995, DKG Display Tech. + */ + +#define ASSEMBLY + +#define IMMED # +#define DBG_PUTC(x) moveb IMMED x, 0xfffff907 + + +.global _stext +.global _start + +.global _rambase +.global _ramvec +.global _ramstart +.global _ramend + +.global penguin_bits + +#ifdef CONFIG_PILOT + +#define IMR 0xFFFFF304 + + .data + .align 16 + +penguin_bits: +#include "bootlogo.rh" + +#endif + +/*****************************************************************************/ + +.data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +.text + +_start: +_stext: + + +#ifdef CONFIG_M68328 + +#ifdef CONFIG_PILOT + .byte 0x4e, 0xfa, 0x00, 0x0a /* Jmp +X bytes */ + .byte 'b', 'o', 'o', 't' + .word 10000 + + nop +#endif + + moveq #0, %d0 + movew %d0, 0xfffff618 /* Watchdog off */ + movel #0x00011f07, 0xfffff114 /* CS A1 Mask */ + + movew #0x0800, 0xfffff906 /* Ignore CTS */ + movew #0x010b, 0xfffff902 /* BAUD to 9600 */ + + movew #0x2410, 0xfffff200 /* PLLCR */ + movew #0x123, 0xfffff202 /* PLLFSR */ + +#ifdef CONFIG_PILOT + moveb #0, 0xfffffA27 /* LCKCON */ + movel #_start, 0xfffffA00 /* LSSA */ + moveb #0xa, 0xfffffA05 /* LVPW */ + movew #0x9f, 0xFFFFFa08 /* LXMAX */ + movew #0x9f, 0xFFFFFa0a /* LYMAX */ + moveb #9, 0xfffffa29 /* LBAR */ + moveb #0, 0xfffffa25 /* LPXCD */ + moveb #0x04, 0xFFFFFa20 /* LPICF */ + moveb #0x58, 0xfffffA27 /* LCKCON */ + moveb #0x85, 0xfffff429 /* PFDATA */ + moveb #0xd8, 0xfffffA27 /* LCKCON */ + moveb #0xc5, 0xfffff429 /* PFDATA */ + moveb #0xd5, 0xfffff429 /* PFDATA */ + + moveal #0x00100000, %a3 + moveal #0x100ffc00, %a4 +#endif /* CONFIG_PILOT */ + +#endif /* CONFIG_M68328 */ + + movew #0x2700, %sr + lea %a4@(-4), %sp + + DBG_PUTC('\r') + DBG_PUTC('\n') + DBG_PUTC('A') + + moveq #0,%d0 + movew #16384, %d0 /* PLL settle wait loop */ +L0: + subw #1, %d0 + bne L0 + + DBG_PUTC('B') + + /* Copy command line from beginning of RAM (+16) to end of bss */ + movel #CONFIG_VECTORBASE, %d7 + addl #16, %d7 + moveal %d7, %a0 + moveal #_ebss, %a1 + lea %a1@(512), %a2 + + DBG_PUTC('C') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +L2: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi L2 + + /* Copy data+init segment from ROM to RAM */ + moveal #_etext, %a0 + moveal #_sdata, %a1 + moveal #__init_end, %a2 + + DBG_PUTC('D') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +LD1: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi LD1 + + DBG_PUTC('E') + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + + DBG_PUTC('F') + + /* Copy command line from end of bss to command line */ + moveal #_ebss, %a0 + moveal #command_line, %a1 + lea %a1@(512), %a2 + + DBG_PUTC('G') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +L3: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi L3 + + movel #_sdata, %d0 + movel %d0, _rambase + movel #_ebss, %d0 + movel %d0, _ramstart + + movel %a4, %d0 + subl #4096, %d0 /* Reserve 4K of stack */ + moveq #79, %d7 + movel %d0, _ramend + + movel %a3, %d0 + movel %d0, rom_length + + pea 0 + pea env + pea %sp@(4) + pea 0 + + DBG_PUTC('H') + +#ifdef CONFIG_PILOT + movel #penguin_bits, 0xFFFFFA00 + moveb #10, 0xFFFFFA05 + movew #160, 0xFFFFFA08 + movew #160, 0xFFFFFA0A +#endif /* CONFIG_PILOT */ + + DBG_PUTC('I') + + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + + DBG_PUTC('J') + DBG_PUTC('\r') + DBG_PUTC('\n') + + jsr start_kernel +_exit: + + jmp _exit + + + .data +env: + .long 0 diff --git a/arch/m68k/platform/68328/head-ram.S b/arch/m68k/platform/68328/head-ram.S new file mode 100644 index 000000000000..7f1aeeacb219 --- /dev/null +++ b/arch/m68k/platform/68328/head-ram.S @@ -0,0 +1,141 @@ + + .global __main + .global __rom_start + + .global _rambase + .global _ramstart + + .global splash_bits + .global _start + .global _stext + .global _edata + +#define DEBUG +#define ROM_OFFSET 0x10C00000 +#define STACK_GAURD 0x10 + + .text + +_start: +_stext: + movew #0x2700, %sr /* Exceptions off! */ + +#if 0 + /* Init chip registers. uCsimm specific */ + moveb #0x00, 0xfffffb0b /* Watchdog off */ + moveb #0x10, 0xfffff000 /* SCR */ + + movew #0x2400, 0xfffff200 /* PLLCR */ + movew #0x0123, 0xfffff202 /* PLLFSR */ + + moveb #0x00, 0xfffff40b /* enable chip select */ + moveb #0x00, 0xfffff423 /* enable /DWE */ + moveb #0x08, 0xfffffd0d /* disable hardmap */ + moveb #0x07, 0xfffffd0e /* level 7 interrupt clear */ + + movew #0x8600, 0xfffff100 /* FLASH at 0x10c00000 */ + movew #0x018b, 0xfffff110 /* 2Meg, enable, 0ws */ + + movew #0x8f00, 0xfffffc00 /* DRAM configuration */ + movew #0x9667, 0xfffffc02 /* DRAM control */ + movew #0x0000, 0xfffff106 /* DRAM at 0x00000000 */ + movew #0x068f, 0xfffff116 /* 8Meg, enable, 0ws */ + + moveb #0x40, 0xfffff300 /* IVR */ + movel #0x007FFFFF, %d0 /* IMR */ + movel %d0, 0xfffff304 + + moveb 0xfffff42b, %d0 + andb #0xe0, %d0 + moveb %d0, 0xfffff42b + + moveb #0x08, 0xfffff907 /* Ignore CTS */ + movew #0x010b, 0xfffff902 /* BAUD to 9600 */ + movew #0xe100, 0xfffff900 /* enable */ +#endif + + movew #16384, %d0 /* PLL settle wait loop */ +L0: + subw #1, %d0 + bne L0 +#ifdef DEBUG + moveq #70, %d7 /* 'F' */ + moveb %d7,0xfffff907 /* No absolute addresses */ +pclp1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp1 +#endif /* DEBUG */ + +#ifdef DEBUG + moveq #82, %d7 /* 'R' */ + moveb %d7,0xfffff907 /* No absolute addresses */ +pclp3: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp3 +#endif /* DEBUG */ + moveal #0x007ffff0, %ssp + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 >= %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + +#ifdef DEBUG + moveq #67, %d7 /* 'C' */ + jsr putc +#endif /* DEBUG */ + + pea 0 + pea env + pea %sp@(4) + pea 0 + +#ifdef DEBUG + moveq #70, %d7 /* 'F' */ + jsr putc +#endif /* DEBUG */ + +lp: + jsr start_kernel + jmp lp +_exit: + + jmp _exit + +__main: + /* nothing */ + rts + +#ifdef DEBUG +putc: + moveb %d7,0xfffff907 +pclp: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp + rts +#endif /* DEBUG */ + + .data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +env: + .long 0 diff --git a/arch/m68k/platform/68328/head-rom.S b/arch/m68k/platform/68328/head-rom.S new file mode 100644 index 000000000000..6ec77d3ea0b3 --- /dev/null +++ b/arch/m68k/platform/68328/head-rom.S @@ -0,0 +1,110 @@ + + .global _start + .global _stext + + .global _rambase + .global _ramvec + .global _ramstart + .global _ramend + +#ifdef CONFIG_INIT_LCD + .global splash_bits +#endif + + .data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE) + +#ifdef CONFIG_INIT_LCD +splash_bits: +#include "bootlogo.rh" +#endif + + .text +_start: +_stext: movew #0x2700,%sr +#ifdef CONFIG_INIT_LCD + movel #splash_bits, 0xfffffA00 /* LSSA */ + moveb #0x28, 0xfffffA05 /* LVPW */ + movew #0x280, 0xFFFFFa08 /* LXMAX */ + movew #0x1df, 0xFFFFFa0a /* LYMAX */ + moveb #0, 0xfffffa29 /* LBAR */ + moveb #0, 0xfffffa25 /* LPXCD */ + moveb #0x08, 0xFFFFFa20 /* LPICF */ + moveb #0x01, 0xFFFFFA21 /* -ve pol */ + moveb #0x81, 0xfffffA27 /* LCKCON */ + movew #0xff00, 0xfffff412 /* LCD pins */ +#endif + moveal #RAMEND-CONFIG_MEMORY_RESERVE*0x100000 - 0x10, %sp + movew #32767, %d0 /* PLL settle wait loop */ +1: subq #1, %d0 + bne 1b + + /* Copy data segment from ROM to RAM */ + moveal #_etext, %a0 + moveal #_sdata, %a1 + moveal #_edata, %a2 + + /* Copy %a0 to %a1 until %a1 == %a2 */ +1: movel %a0@+, %a1@+ + cmpal %a1, %a2 + bhi 1b + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + /* Copy 0 to %a0 until %a0 == %a1 */ + +1: + clrl %a0@+ + cmpal %a0, %a1 + bhi 1b + + movel #_sdata, %d0 + movel %d0, _rambase + movel #_ebss, %d0 + movel %d0, _ramstart + movel #RAMEND-CONFIG_MEMORY_RESERVE*0x100000, %d0 + movel %d0, _ramend + movel #CONFIG_VECTORBASE, %d0 + movel %d0, _ramvec + +/* + * load the current task pointer and stack + */ + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + +1: jsr start_kernel + bra 1b +_exit: + + jmp _exit + + +putc: + moveb %d7,0xfffff907 +1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq 1b + rts + + .data +env: + .long 0 + .text + diff --git a/arch/m68k/platform/68328/ints.c b/arch/m68k/platform/68328/ints.c new file mode 100644 index 000000000000..e5631831a200 --- /dev/null +++ b/arch/m68k/platform/68328/ints.c @@ -0,0 +1,186 @@ +/* + * linux/arch/m68knommu/platform/68328/ints.c + * + * 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. + * + * Copyright 1996 Roman Zippel + * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com> + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <asm/traps.h> +#include <asm/io.h> +#include <asm/machdep.h> + +#if defined(CONFIG_M68328) +#include <asm/MC68328.h> +#elif defined(CONFIG_M68EZ328) +#include <asm/MC68EZ328.h> +#elif defined(CONFIG_M68VZ328) +#include <asm/MC68VZ328.h> +#endif + +/* assembler routines */ +asmlinkage void system_call(void); +asmlinkage void buserr(void); +asmlinkage void trap(void); +asmlinkage void trap3(void); +asmlinkage void trap4(void); +asmlinkage void trap5(void); +asmlinkage void trap6(void); +asmlinkage void trap7(void); +asmlinkage void trap8(void); +asmlinkage void trap9(void); +asmlinkage void trap10(void); +asmlinkage void trap11(void); +asmlinkage void trap12(void); +asmlinkage void trap13(void); +asmlinkage void trap14(void); +asmlinkage void trap15(void); +asmlinkage void trap33(void); +asmlinkage void trap34(void); +asmlinkage void trap35(void); +asmlinkage void trap36(void); +asmlinkage void trap37(void); +asmlinkage void trap38(void); +asmlinkage void trap39(void); +asmlinkage void trap40(void); +asmlinkage void trap41(void); +asmlinkage void trap42(void); +asmlinkage void trap43(void); +asmlinkage void trap44(void); +asmlinkage void trap45(void); +asmlinkage void trap46(void); +asmlinkage void trap47(void); +asmlinkage irqreturn_t bad_interrupt(int, void *); +asmlinkage irqreturn_t inthandler(void); +asmlinkage irqreturn_t inthandler1(void); +asmlinkage irqreturn_t inthandler2(void); +asmlinkage irqreturn_t inthandler3(void); +asmlinkage irqreturn_t inthandler4(void); +asmlinkage irqreturn_t inthandler5(void); +asmlinkage irqreturn_t inthandler6(void); +asmlinkage irqreturn_t inthandler7(void); + +extern e_vector *_ramvec; + +/* The number of spurious interrupts */ +volatile unsigned int num_spurious; + +/* The 68k family did not have a good way to determine the source + * of interrupts until later in the family. The EC000 core does + * not provide the vector number on the stack, we vector everything + * into one vector and look in the blasted mask register... + * This code is designed to be fast, almost constant time, not clean! + */ +void process_int(int vec, struct pt_regs *fp) +{ + int irq; + int mask; + + unsigned long pend = ISR; + + while (pend) { + if (pend & 0x0000ffff) { + if (pend & 0x000000ff) { + if (pend & 0x0000000f) { + mask = 0x00000001; + irq = 0; + } else { + mask = 0x00000010; + irq = 4; + } + } else { + if (pend & 0x00000f00) { + mask = 0x00000100; + irq = 8; + } else { + mask = 0x00001000; + irq = 12; + } + } + } else { + if (pend & 0x00ff0000) { + if (pend & 0x000f0000) { + mask = 0x00010000; + irq = 16; + } else { + mask = 0x00100000; + irq = 20; + } + } else { + if (pend & 0x0f000000) { + mask = 0x01000000; + irq = 24; + } else { + mask = 0x10000000; + irq = 28; + } + } + } + + while (! (mask & pend)) { + mask <<=1; + irq++; + } + + do_IRQ(irq, fp); + pend &= ~mask; + } +} + +static void intc_irq_unmask(struct irq_data *d) +{ + IMR &= ~(1 << d->irq); +} + +static void intc_irq_mask(struct irq_data *d) +{ + IMR |= (1 << d->irq); +} + +static struct irq_chip intc_irq_chip = { + .name = "M68K-INTC", + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +/* + * This function should be called during kernel startup to initialize + * the machine vector table. + */ +void __init init_IRQ(void) +{ + int i; + + /* set up the vectors */ + for (i = 72; i < 256; ++i) + _ramvec[i] = (e_vector) bad_interrupt; + + _ramvec[32] = system_call; + + _ramvec[65] = (e_vector) inthandler1; + _ramvec[66] = (e_vector) inthandler2; + _ramvec[67] = (e_vector) inthandler3; + _ramvec[68] = (e_vector) inthandler4; + _ramvec[69] = (e_vector) inthandler5; + _ramvec[70] = (e_vector) inthandler6; + _ramvec[71] = (e_vector) inthandler7; + + IVR = 0x40; /* Set DragonBall IVR (interrupt base) to 64 */ + + /* turn off all interrupts */ + IMR = ~0; + + for (i = 0; (i < NR_IRQS); i++) { + set_irq_chip(i, &intc_irq_chip); + set_irq_handler(i, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/68328/romvec.S b/arch/m68k/platform/68328/romvec.S new file mode 100644 index 000000000000..31084466eae8 --- /dev/null +++ b/arch/m68k/platform/68328/romvec.S @@ -0,0 +1,35 @@ +/* + * linux/arch/m68knommu/platform/68328/romvec.S + * + * 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. + * + * Copyright 1996 Roman Zippel + * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com> + * Copyright 2006 Greg Ungerer <gerg@snapgear.com> + */ + +.global _start +.global _buserr +.global trap +.global system_call + +.section .romvec + +e_vectors: +.long CONFIG_RAMBASE+CONFIG_RAMSIZE-4, _start, buserr, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +/* TRAP #0-15 */ +.long system_call, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 + diff --git a/arch/m68k/platform/68328/timers.c b/arch/m68k/platform/68328/timers.c new file mode 100644 index 000000000000..309f725995bf --- /dev/null +++ b/arch/m68k/platform/68328/timers.c @@ -0,0 +1,134 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68328/timers.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * Copyright (C) 2001 Georges Menie, Ken Desmet + * + * 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. + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clocksource.h> +#include <asm/setup.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/MC68VZ328.h> + +/***************************************************************************/ + +#if defined(CONFIG_DRAGEN2) +/* with a 33.16 MHz clock, this will give usec resolution to the time functions */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK +#define CLOCK_PRE 7 +#define TICKS_PER_JIFFY 41450 + +#elif defined(CONFIG_XCOPILOT_BUGS) +/* + * The only thing I know is that CLK32 is not available on Xcopilot + * I have little idea about what frequency SYSCLK has on Xcopilot. + * The values for prescaler and compare registers were simply + * taken from the original source + */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK +#define CLOCK_PRE 2 +#define TICKS_PER_JIFFY 0xd7e4 + +#else +/* default to using the 32Khz clock */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_32KHZ +#define CLOCK_PRE 31 +#define TICKS_PER_JIFFY 10 +#endif + +static u32 m68328_tick_cnt; + +/***************************************************************************/ + +static irqreturn_t hw_tick(int irq, void *dummy) +{ + /* Reset Timer1 */ + TSTAT &= 0; + + m68328_tick_cnt += TICKS_PER_JIFFY; + return arch_timer_interrupt(irq, dummy); +} + +/***************************************************************************/ + +static struct irqaction m68328_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = hw_tick, +}; + +/***************************************************************************/ + +static cycle_t m68328_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u32 cycles; + + local_irq_save(flags); + cycles = m68328_tick_cnt + TCN; + local_irq_restore(flags); + + return cycles; +} + +/***************************************************************************/ + +static struct clocksource m68328_clk = { + .name = "timer", + .rating = 250, + .read = m68328_read_clk, + .shift = 20, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +/***************************************************************************/ + +void hw_timer_init(void) +{ + /* disable timer 1 */ + TCTL = 0; + + /* set ISR */ + setup_irq(TMR_IRQ_NUM, &m68328_timer_irq); + + /* Restart mode, Enable int, Set clock source */ + TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE; + TPRER = CLOCK_PRE; + TCMP = TICKS_PER_JIFFY; + + /* Enable timer 1 */ + TCTL |= TCTL_TEN; + m68328_clk.mult = clocksource_hz2mult(TICKS_PER_JIFFY*HZ, m68328_clk.shift); + clocksource_register(&m68328_clk); +} + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec) +{ + long now = RTCTIME; + + *year = *mon = *day = 1; + *hour = (now >> 24) % 24; + *min = (now >> 16) % 60; + *sec = now % 60; +} + +/***************************************************************************/ |