[33442772] | 1 | /* macros.inc |
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| 2 | * |
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| 3 | * This file assists the board independent startup code |
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| 4 | * by initializing the chip-select channels to |
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| 5 | * reflect the proper memory configuration. |
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| 6 | * |
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| 7 | * NOTE: No stack has been established when this routine |
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| 8 | * is invoked. It returns to start.s through ldsegs |
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| 9 | * |
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| 10 | * Submitted by: |
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| 11 | * |
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| 12 | * Erik Ivanenko |
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| 13 | * University of Toronto |
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| 14 | * erik.ivanenko@utoronto.ca |
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| 15 | * |
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| 16 | * The license and distribution terms for this file may be |
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| 17 | * found in the file LICENSE in this distribution or at |
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| 18 | * http://www.OARcorp.com/rtems/license.html. |
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| 19 | * |
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| 20 | * $Id$ |
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| 21 | */ |
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| 22 | |
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| 23 | .set GDT_CODE_PTR , 0x10 |
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| 24 | .set GDT_DATA_PTR , 0x18 |
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| 25 | |
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| 26 | .set BOARD_SELECT , 0x301 |
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| 27 | .set BOARD_DATA , 0x302 |
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| 28 | .set BOARD_LATCH , 0x303 |
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| 29 | |
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| 30 | |
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| 31 | #define SetExRegByte(_register,_value) \ |
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| 32 | movb $ ## _value, al; \ |
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| 33 | movw $ ## _register, dx; \ |
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| 34 | outb al, dx |
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| 35 | |
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| 36 | #define SetExRegWord(_register,_value) \ |
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| 37 | movw $ ## _value, ax; \ |
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| 38 | movw $ ## _register, dx ; \ |
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| 39 | outw ax, dx |
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| 40 | |
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| 41 | |
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| 42 | #define DESC2(lim_0_15, bas_0_15, bas_16_23, access, gran, bas_24_31) \ |
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| 43 | .word lim_0_15 ; \ |
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| 44 | .word bas_0_15 ; \ |
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| 45 | .byte bas_16_23 ; \ |
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| 46 | .byte access ; \ |
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| 47 | .byte gran ; \ |
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| 48 | .byte bas_24_31 |
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| 49 | |
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| 50 | #define DESC3( _base, _limit) \ |
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| 51 | .word _limit ; \ |
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| 52 | .long _base |
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| 53 | |
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| 54 | /* THE GET_ACCESS IS CHANGED FROM 8E TO 9E */ |
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| 55 | |
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| 56 | #define INTERRUPT_GATE( _vector ) \ |
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| 57 | .word _vector ; \ |
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| 58 | .word GDT_CODE_PTR ; \ |
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| 59 | .byte 0x0 ; \ |
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| 60 | .byte 0x8E ; \ |
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| 61 | .word 0x0 |
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| 62 | |
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| 63 | #define rLOAD_INDEX( _selector, _segment_register) \ |
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| 64 | movl _selector , _segment_register ; \ |
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| 65 | addb al, ( eax ) |
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| 66 | |
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| 67 | #define rLOAD_SEGMENT( _reg, _segment_register) \ |
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| 68 | mov _reg , _segment_register ; \ |
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| 69 | |
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| 70 | /* #define rLOAD_SEGMENT( _reg, _segment_register) \ |
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| 71 | .code16 ; \ |
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| 72 | mov _reg , _segment_register ; \ |
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| 73 | .code32 |
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| 74 | */ |
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| 75 | #define pLOAD_SEGMENT( _selector, _segment_register) \ |
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| 76 | movl $ ## _selector , eax ; .code16 ; \ |
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| 77 | mov ax, _segment_register ; .code32 |
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| 78 | |
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| 79 | /* #define MOVE_WORD( _immed32, _reg ) \ |
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| 80 | data16 ; \ |
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| 81 | movl _immed32, _reg |
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| 82 | */ |
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| 83 | |
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| 84 | #define MOVE_WORD( _immed32, _reg ) \ |
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| 85 | movw _immed32, _reg |
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| 86 | |
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| 87 | /* #define MOVE_IMMED_WORD( _immed32, _reg ) \ |
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| 88 | data16 ; \ |
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| 89 | mov $ ## _immed32, _reg |
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| 90 | |
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| 91 | #define CS_OFF( _cs_symbol, _reg ) \ |
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| 92 | data16 ; \ |
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| 93 | mov _cs_symbol, _reg ; \ |
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| 94 | data16 ;\ |
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| 95 | andl $0x000ffff, _reg |
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| 96 | |
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| 97 | #define _16_NOPS \ |
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| 98 | nop ; \ |
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| 99 | nop ; \ |
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| 100 | nop ; \ |
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| 101 | nop ; \ |
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| 102 | nop ; \ |
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| 103 | nop ; \ |
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| 104 | nop ; \ |
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| 105 | nop ; \ |
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| 106 | nop ; \ |
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| 107 | nop ; \ |
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| 108 | nop ; \ |
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| 109 | nop ; \ |
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| 110 | nop ; \ |
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| 111 | nop ; \ |
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| 112 | nop ; \ |
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| 113 | nop ; |
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| 114 | */ |
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| 115 | |
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