From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/m68knommu/platform/68328/Makefile | 21 +++ arch/m68knommu/platform/68328/bootlogo.h | 270 +++++++++++++++++++++++++++ arch/m68knommu/platform/68328/bootlogo.pl | 10 + arch/m68knommu/platform/68328/config.c | 125 +++++++++++++ arch/m68knommu/platform/68328/entry.S | 276 ++++++++++++++++++++++++++++ arch/m68knommu/platform/68328/head-pilot.S | 224 +++++++++++++++++++++++ arch/m68knommu/platform/68328/head-ram.S | 171 +++++++++++++++++ arch/m68knommu/platform/68328/head-rom.S | 109 +++++++++++ arch/m68knommu/platform/68328/ints.c | 285 +++++++++++++++++++++++++++++ 9 files changed, 1491 insertions(+) create mode 100644 arch/m68knommu/platform/68328/Makefile create mode 100644 arch/m68knommu/platform/68328/bootlogo.h create mode 100644 arch/m68knommu/platform/68328/bootlogo.pl create mode 100644 arch/m68knommu/platform/68328/config.c create mode 100644 arch/m68knommu/platform/68328/entry.S create mode 100644 arch/m68knommu/platform/68328/head-pilot.S create mode 100644 arch/m68knommu/platform/68328/head-ram.S create mode 100644 arch/m68knommu/platform/68328/head-rom.S create mode 100644 arch/m68knommu/platform/68328/ints.c (limited to 'arch/m68knommu/platform/68328') diff --git a/arch/m68knommu/platform/68328/Makefile b/arch/m68knommu/platform/68328/Makefile new file mode 100644 index 00000000000..1b3b719e447 --- /dev/null +++ b/arch/m68knommu/platform/68328/Makefile @@ -0,0 +1,21 @@ +# +# 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 + +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 $(head-y) diff --git a/arch/m68knommu/platform/68328/bootlogo.h b/arch/m68knommu/platform/68328/bootlogo.h new file mode 100644 index 00000000000..67bc2c17386 --- /dev/null +++ b/arch/m68knommu/platform/68328/bootlogo.h @@ -0,0 +1,270 @@ +#define bootlogo_width 160 +#define bootlogo_height 160 +static unsigned char bootlogo_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x40, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x55, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, + 0x00, 0x00, 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0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, }; diff --git a/arch/m68knommu/platform/68328/bootlogo.pl b/arch/m68knommu/platform/68328/bootlogo.pl new file mode 100644 index 00000000000..b04ae3f50da --- /dev/null +++ b/arch/m68knommu/platform/68328/bootlogo.pl @@ -0,0 +1,10 @@ + +$_ = 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 $_; diff --git a/arch/m68knommu/platform/68328/config.c b/arch/m68knommu/platform/68328/config.c new file mode 100644 index 00000000000..fd7c93f8648 --- /dev/null +++ b/arch/m68knommu/platform/68328/config.c @@ -0,0 +1,125 @@ +/* + * linux/arch/$(ARCH)/platform/$(PLATFORM)/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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + + +void BSP_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *)) +{ + +#ifdef 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 + */ + + /* Restart mode, Enable int, SYSCLK, Enable timer */ + TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_SYSCLK | TCTL_TEN; + /* Set prescaler */ + TPRER2 = 2; + /* Set compare register */ + TCMP2 = 0xd7e4; +#else + /* Restart mode, Enable int, 32KHz, Enable timer */ + TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_32KHZ | TCTL_TEN; + /* Set prescaler (Divide 32KHz by 32)*/ + TPRER2 = 31; + /* Set compare register 32Khz / 32 / 10 = 100 */ + TCMP2 = 10; +#endif + + request_irq(TMR2_IRQ_NUM, timer_routine, IRQ_FLG_LOCK, "timer", NULL); +} + +void BSP_tick(void) +{ + /* Reset Timer2 */ + TSTAT2 &= 0; +} + +unsigned long BSP_gettimeoffset (void) +{ + return 0; +} + +void BSP_gettod (int *yearp, int *monp, int *dayp, + int *hourp, int *minp, int *secp) +{ +} + +int BSP_hwclk(int op, struct hwclk_time *t) +{ + if (!op) { + /* read */ + } else { + /* write */ + } + return 0; +} + +int BSP_set_clock_mmss (unsigned long nowtime) +{ +#if 0 + short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60; + + tod->second1 = real_seconds / 10; + tod->second2 = real_seconds % 10; + tod->minute1 = real_minutes / 10; + tod->minute2 = real_minutes % 10; +#endif + return 0; +} + +void BSP_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 \n"); + printk(KERN_INFO "68328 support Kenneth Albanowski \n"); + printk(KERN_INFO "68328/Pilot support Bernhard Kuhn \n"); + + mach_sched_init = BSP_sched_init; + mach_tick = BSP_tick; + mach_gettimeoffset = BSP_gettimeoffset; + mach_gettod = BSP_gettod; + mach_hwclk = NULL; + mach_set_clock_mmss = NULL; + mach_reset = BSP_reset; + *command = '\0'; +} diff --git a/arch/m68knommu/platform/68328/entry.S b/arch/m68knommu/platform/68328/entry.S new file mode 100644 index 00000000000..0f5d1fe8eb5 --- /dev/null +++ b/arch/m68knommu/platform/68328/entry.S @@ -0,0 +1,276 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +.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_D0) + jra ret_from_exception + +do_trace: + movel #-ENOSYS,%sp@(PT_D0) /* needed for strace*/ + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_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_D0) /* save the return value */ + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + jbsr syscall_trace + +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_ORIG_D0),%d0 + + movel %sp,%d1 /* get thread_info pointer */ + andl #0xffffe000,%d1 + movel %d1,%a2 + btst #TIF_SYSCALL_TRACE,%a2@(TI_FLAGS) + 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_D0) /* save the return value*/ + +ret_from_exception: + btst #5,%sp@(PT_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 #0xffffe000,%d1 + movel %d1,%a2 + move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + andl #_TIF_WORK_MASK,%d1 + 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) + clrl %sp@- + bsrw do_signal + addql #8,%sp + RESTORE_SWITCH_STACK + addql #4,%sp +Lreturn: + RESTORE_ALL + +/* + * This is the main interrupt handler, responsible for calling process_int() + */ +inthandler1: + SAVE_ALL + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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 + addql #1,local_irq_count /* put exception # in d0*/ + movew %sp@(PT_VECTOR), %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: + subql #1,local_irq_count + jeq 1f +2: + RESTORE_ALL +1: + moveb %sp@(PT_SR), %d0 + and #7, %d0 + jhi 2b + + /* check if we need to do software interrupts */ + movel local_irq_count,%d0 + 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/m68knommu/platform/68328/head-pilot.S b/arch/m68knommu/platform/68328/head-pilot.S new file mode 100644 index 00000000000..c46775fe04b --- /dev/null +++ b/arch/m68knommu/platform/68328/head-pilot.S @@ -0,0 +1,224 @@ +/* + * linux/arch/m68knommu/platform/68328/head-rom.S + * - A startup file for the MC68328 + * + * Copyright (C) 1998 D. Jeff Dionne , + * Kenneth Albanowski , + * 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 + +#include + +.global _stext +.global _start + +.global _rambase +.global __ramvec +.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 #__ramvec, %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/m68knommu/platform/68328/head-ram.S b/arch/m68knommu/platform/68328/head-ram.S new file mode 100644 index 00000000000..6bdc9bce43f --- /dev/null +++ b/arch/m68knommu/platform/68328/head-ram.S @@ -0,0 +1,171 @@ +#include + + .global __main + .global __ram_start + .global __ram_end + .global __rom_start + .global __rom_end + + .global _rambase + .global _ramstart + + .global splash_bits + .global _start + .global _stext + +#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 CONFIG_RELOCATE + /* Copy me to RAM */ + moveal #__rom_start, %a0 + moveal #__ram_start, %a1 + moveal #_edata, %a2 + + /* Copy %a0 to %a1 until %a1 == %a2 */ +LD1: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi LD1 + +#ifdef DEBUG + moveq #74, %d7 /* 'J' */ + moveb %d7,0xfffff907 /* No absolute addresses */ +pclp2: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp2 +#endif /* DEBUG */ + /* jump into the RAM copy */ + jmp ram_jump +ram_jump: + +#endif /* CONFIG_RELOCATE */ + +#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/m68knommu/platform/68328/head-rom.S b/arch/m68knommu/platform/68328/head-rom.S new file mode 100644 index 00000000000..2b448a29701 --- /dev/null +++ b/arch/m68knommu/platform/68328/head-rom.S @@ -0,0 +1,109 @@ +#include + + .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 + +#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 #__ramvec, %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/m68knommu/platform/68328/ints.c b/arch/m68knommu/platform/68328/ints.c new file mode 100644 index 00000000000..7437217813d --- /dev/null +++ b/arch/m68knommu/platform/68328/ints.c @@ -0,0 +1,285 @@ +/* + * 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 + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#if defined(CONFIG_M68328) +#include +#elif defined(CONFIG_M68EZ328) +#include +#elif defined(CONFIG_M68VZ328) +#include +#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 *, struct pt_regs *); +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; +unsigned int local_irq_count[NR_CPUS]; + +/* irq node variables for the 32 (potential) on chip sources */ +static irq_node_t int_irq_list[NR_IRQS]; + +#if !defined(CONFIG_DRAGEN2) +asm (".global _start, __ramend/n/t" + ".section .romvec/n" + "e_vectors:\n\t" + ".long __ramend-4, _start, buserr, trap, trap, trap, trap, trap\n\t" + ".long trap, trap, trap, trap, trap, trap, trap, trap\n\t" + ".long trap, trap, trap, trap, trap, trap, trap, trap\n\t" + ".long trap, trap, trap, trap\n\t" + ".long trap, trap, trap, trap\n\t" + /*.long inthandler, inthandler, inthandler, inthandler + .long inthandler4, inthandler, inthandler, inthandler */ + /* TRAP #0-15 */ + ".long system_call, trap, trap, trap, trap, trap, trap, trap\n\t" + ".long trap, trap, trap, trap, trap, trap, trap, trap\n\t" + ".long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\n\t" + ".text\n" + "ignore: rte"); +#endif + +/* + * This function should be called during kernel startup to initialize + * the IRQ handling routines. + */ +void 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 */ + + /* initialize handlers */ + for (i = 0; i < NR_IRQS; i++) { + int_irq_list[i].handler = bad_interrupt; + int_irq_list[i].flags = IRQ_FLG_STD; + int_irq_list[i].dev_id = NULL; + int_irq_list[i].devname = NULL; + } + + /* turn off all interrupts */ + IMR = ~0; +} + +int request_irq( + unsigned int irq, + irqreturn_t (*handler)(int, void *, struct pt_regs *), + unsigned long flags, + const char *devname, + void *dev_id) +{ + if (irq >= NR_IRQS) { + printk (KERN_ERR "%s: Unknown IRQ %d from %s\n", __FUNCTION__, irq, devname); + return -ENXIO; + } + + if (!(int_irq_list[irq].flags & IRQ_FLG_STD)) { + if (int_irq_list[irq].flags & IRQ_FLG_LOCK) { + printk(KERN_ERR "%s: IRQ %d from %s is not replaceable\n", + __FUNCTION__, irq, int_irq_list[irq].devname); + return -EBUSY; + } + if (flags & IRQ_FLG_REPLACE) { + printk(KERN_ERR "%s: %s can't replace IRQ %d from %s\n", + __FUNCTION__, devname, irq, int_irq_list[irq].devname); + return -EBUSY; + } + } + + int_irq_list[irq].handler = handler; + int_irq_list[irq].flags = flags; + int_irq_list[irq].dev_id = dev_id; + int_irq_list[irq].devname = devname; + + IMR &= ~(1<= NR_IRQS) { + printk (KERN_ERR "%s: Unknown IRQ %d\n", __FUNCTION__, irq); + return; + } + + if (int_irq_list[irq].dev_id != dev_id) + printk(KERN_INFO "%s: removing probably wrong IRQ %d from %s\n", + __FUNCTION__, irq, int_irq_list[irq].devname); + + int_irq_list[irq].handler = bad_interrupt; + int_irq_list[irq].flags = IRQ_FLG_STD; + int_irq_list[irq].dev_id = NULL; + int_irq_list[irq].devname = NULL; + + IMR |= 1<