[2ea8df3] | 1 | /* |
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| 2 | * $Id$ |
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| 3 | */ |
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| 4 | |
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[702c5f5] | 5 | #include "asm.h" |
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| 6 | |
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| 7 | BEGIN_CODE |
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| 8 | |
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| 9 | .globl _romStart |
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[80e24f1f] | 10 | .globl start |
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[702c5f5] | 11 | .globl _start |
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| 12 | .globl _romFaultStart |
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| 13 | .globl _led_array |
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| 14 | .text |
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[80e24f1f] | 15 | start: /* JRS */ |
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| 16 | _start: /* JRS */ |
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[702c5f5] | 17 | SYM(romStart ): |
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| 18 | SYM(_romStart ): |
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| 19 | # This line is to make compiler happy. |
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| 20 | mov 0, g14 |
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| 21 | ldconst 0x120f,r10 # BIST register |
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| 22 | /* |
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| 23 | Setup code for in memory loaded image |
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| 24 | */ |
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| 25 | /* |
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| 26 | # Interrupt stack is used by default. |
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| 27 | # Copy all code (except Fault Table and Fault Handler) |
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| 28 | # from EPROM into DRAM. |
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| 29 | */ |
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| 30 | ldconst 0x120f,r10 //# BIST register |
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| 31 | ldconst 0x2,r3 |
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| 32 | stob r3,0(r10) //# 2->LED |
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| 33 | /* |
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| 34 | # Zero all uninitialized data |
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| 35 | */ |
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| 36 | callx _zeroBss |
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| 37 | ldconst 0x120f,r10 //# BIST register |
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| 38 | ldconst 0x3,r3 |
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| 39 | stob r3,0(r10) //# 3->LED |
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| 40 | /* |
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| 41 | # And reinitialize processor. |
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| 42 | # _start is a few lines below. |
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| 43 | # _prcb is RAM-based struct PRCB. |
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| 44 | */ |
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| 45 | ldconst 0x300, r4 |
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| 46 | ldconst _pmc_start, r5 |
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| 47 | ldconst _ram_prcb, r6 |
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| 48 | sysctl r4, r5, r6 |
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| 49 | /* |
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| 50 | # This point will never be reached. |
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| 51 | */ |
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| 52 | |
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| 53 | SYM(_pmc_start) : |
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| 54 | SYM(pmc_start) : |
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| 55 | ldconst 0x120f,r10 # BIST register |
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| 56 | ldconst 0x4,r3 |
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| 57 | stob r3,0(r10) //# 4->LED |
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| 58 | mov 0, g14 |
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| 59 | /* |
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| 60 | # To get ready to invoke procedures. |
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| 61 | # I'll use supervisor stack. |
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| 62 | */ |
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| 63 | |
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| 64 | ldconst _svrStackPtr, fp |
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| 65 | lda 16*4(fp), sp |
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| 66 | ldconst 0x5,r3 |
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| 67 | stob r3,0(r10) //# 5->LED |
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| 68 | |
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| 69 | ldconst 0x1F0000, r4 |
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| 70 | ldconst 0x1F2000, r3 |
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| 71 | ldconst 0, r5 |
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| 72 | modpc r4, r3, r5 |
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| 73 | |
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| 74 | ldconst 7,r3 |
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| 75 | stob r3,0(r10) //# 7->LED |
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| 76 | |
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| 77 | callx _rx_boot_card |
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| 78 | /* # if _romMain ever returns ... */ |
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| 79 | b _romExit |
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| 80 | |
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| 81 | SYM(romFaultStart) : |
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| 82 | SYM(_romFaultStart) : |
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| 83 | |
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| 84 | mov 0, g14 |
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| 85 | |
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[ae7325bd] | 86 | /* ldconst 0, sf0 XXX JRS */ |
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[702c5f5] | 87 | /* |
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| 88 | # To get ready to invoke procedures. |
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| 89 | # I'll use supervisor stack. |
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| 90 | # _svrStackPtr is defined directly in rom.ld. |
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| 91 | */ |
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| 92 | ldconst _svrStackPtr, fp |
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| 93 | lda 16*4(fp), sp |
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| 94 | /* |
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| 95 | # Set processor priority to zero. |
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| 96 | */ |
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| 97 | ldconst 0x1F0000, r4 |
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| 98 | ldconst 0, r5 |
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| 99 | modpc r4, r4, r5 |
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| 100 | // # Now to real code |
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| 101 | // Fix this up callx _romFaultMain |
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| 102 | callx _rx_boot_card |
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| 103 | // # if _romMain ever returns ... |
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| 104 | b _romExit |
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| 105 | |
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| 106 | _romExit : |
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| 107 | // # if _romMain ever returns ... |
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| 108 | // fmark |
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| 109 | b _romExit |
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| 110 | |
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| 111 | |
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| 112 | |
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| 113 | SYM(led_array): |
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| 114 | .byte 99 |
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| 115 | .byte 1 |
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| 116 | .byte 2 |
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| 117 | .byte 3 |
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| 118 | .byte 4 |
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| 119 | .byte 5 |
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| 120 | .byte 6 |
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| 121 | .byte 7 |
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| 122 | .byte 8 |
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| 123 | .byte 9 |
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| 124 | .byte 0xa |
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| 125 | .byte 0xb |
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| 126 | .byte 0xc |
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[80e24f1f] | 127 | |
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| 128 | |
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| 129 | /* just to compile and link application XXX JOEL */ |
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| 130 | .globl _faultStart |
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| 131 | .globl _faultEnd |
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| 132 | .globl _faultCheckSum |
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| 133 | .globl _faultBuffer |
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| 134 | .globl _svrStackPtr |
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| 135 | .globl _console_pmr_getc |
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| 136 | .globl _console_pmr_kbhit |
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| 137 | .globl _console_pmr_init |
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| 138 | .globl _console_pmr_putc |
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| 139 | .globl _DBGConsole_make_sync |
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| 140 | .globl _codeRamStart |
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| 141 | .globl _codeRomStart |
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| 142 | .globl _codeRamEnd |
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| 143 | .globl _codeRomEnd |
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| 144 | .globl _bssStart |
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| 145 | .globl _bssEnd |
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| 146 | .globl _bssStart_1 |
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| 147 | .globl _bssEnd_1 |
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| 148 | .globl _intStackPtr |
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| 149 | |
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| 150 | _faultStart: |
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| 151 | _faultEnd: |
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| 152 | _faultCheckSum: |
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| 153 | _faultBuffer: |
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| 154 | _svrStackPtr: |
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| 155 | _console_pmr_getc: |
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| 156 | _console_pmr_kbhit: |
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| 157 | _console_pmr_init: |
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| 158 | _console_pmr_putc: |
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| 159 | _DBGConsole_make_sync: |
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| 160 | _codeRamStart: |
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| 161 | _codeRomStart: |
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| 162 | _codeRamEnd: |
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| 163 | _codeRomEnd: |
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| 164 | _bssStart: |
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| 165 | _bssEnd: |
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| 166 | _bssStart_1: |
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| 167 | _bssEnd_1: |
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| 168 | _intStackPtr: |
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| 169 | |
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