Loading...
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | /* * 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 |