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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | /* * Copyright (C) 1998 Dan Malek <dmalek@jlc.net> * Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se> * Copyright (C) 2000-2003 Wolfgang Denk <wd@denx.de> * Coldfire contribution by Bernhard Kuhn <bkuhn@metrowerks.com> * * See file CREDITS for list of people who contributed to this * project. * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <config.h> #include "version.h" #ifndef CONFIG_IDENT_STRING #define CONFIG_IDENT_STRING "" #endif #define MCF_MBAR 0x10000000 #define MEM_BUILTIN_ADDR 0x20000000 #define MEM_BUILTIN_SIZE 0x1000 #define DRAM_ADDR 0x0 #define DRAM_SIZE 0x400000 .text .globl _start _start: nop nop move.w #0x2700,%sr move.l #0, %d0 movec %d0, %VBR #ifdef CONFIG_M5272 move.l #(MCF_MBAR+1), %d0 move.c %d0, %MBAR move.l #(MEM_BUILTIN_ADDR+1), %d0 movec %d0, %RAMBAR0 move.l #0x01000000, %d0 /* Invalidate cache cmd */ movec %d0, %CACR /* Invalidate cache */ move.l #0x0000c000, %d0 /* Setup cache mask */ movec %d0, %ACR0 /* Enable cache */ move.l #0xff00c000, %d0 /* Setup cache mask */ movec %d0, %ACR1 /* Enable cache */ move.l #0x80000100, %d0 /* Setup cache mask */ movec %d0, %CACR /* Enable cache */ #endif move.l #_sbss,%a0 move.l #_ebss,%d0 1: clr.l (%a0)+ cmp.l %a0,%d0 bne.s 1b /* move.l #MEM_BUILTIN_ADDR+MEM_BUILTIN_SIZE, %sp */ move.l #DRAM_ADDR+DRAM_SIZE, %sp clr.l %sp@- jsr board_init_f .globl exception_handler exception_handler: move.w #0x2700,%sr lea %sp@(-60),%sp movem.l %d0-%d7/%a0-%a6,%sp@ jsr do_exception movem.l %sp@,%d0-%d7/%a0-%a6 lea %sp@(60),%sp rte .globl buserror_handler buserror_handler: move.w #0x2700,%sr lea %sp@(-60),%sp movem.l %d0-%d7/%a0-%a6,%sp@ jsr do_buserror movem.l %sp@,%d0-%d7/%a0-%a6 lea %sp@(60),%sp rte .globl addresserror_handler addresserror_handler: move.w #0x2700,%sr lea %sp@(-60),%sp movem.l %d0-%d7/%a0-%a6,%sp@ jsr do_buserror movem.l %sp@,%d0-%d7/%a0-%a6 lea %sp@(60),%sp rte .globl get_endaddr get_endaddr: movel #_end,%d0 rts #ifdef CONFIG_M5272 .globl icache_enable icache_enable: move.l #0x01000000, %d0 /* Invalidate cache cmd */ movec %d0, %CACR /* Invalidate cache */ move.l #0x0000c000, %d0 /* Setup cache mask */ movec %d0, %ACR0 /* Enable cache */ move.l #0xff00c000, %d0 /* Setup cache mask */ movec %d0, %ACR1 /* Enable cache */ move.l #0x80000100, %d0 /* Setup cache mask */ movec %d0, %CACR /* Enable cache */ moveq #1, %d0 move.l %d0, icache_state rts .globl icache_disable icache_disable: move.l #0x00000100, %d0 /* Setup cache mask */ movec %d0, %CACR /* Enable cache */ clr.l %d0 /* Setup cache mask */ movec %d0, %ACR0 /* Enable cache */ movec %d0, %ACR1 /* Enable cache */ moveq #0, %d0 move.l %d0, icache_state rts #endif #ifdef CONFIG_M5282 .globl icache_enable icache_enable: rts .globl icache_disable icache_disable: rts #endif .globl icache_status icache_status: move.l icache_state, %d0 rts .data icache_state: .long 1 .globl version_string version_string: .ascii U_BOOT_VERSION .ascii " (", __DATE__, " - ", __TIME__, ")" .ascii CONFIG_IDENT_STRING, "\0" |