1 | /*
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2 | * Copyright (C) 2006-2016 Oracle Corporation
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3 | *
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4 | * This file is part of VirtualBox Open Source Edition (OSE), as
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5 | * available from http://www.virtualbox.org. This file is free software;
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6 | * you can redistribute it and/or modify it under the terms of the GNU
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7 | * General Public License (GPL) as published by the Free Software
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8 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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9 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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10 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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11 | * --------------------------------------------------------------------
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12 | *
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13 | * This code is based on:
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14 | *
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15 | * ROM BIOS for use with Bochs/Plex86/QEMU emulation environment
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16 | *
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17 | * Copyright (C) 2002 MandrakeSoft S.A.
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18 | *
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19 | * MandrakeSoft S.A.
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20 | * 43, rue d'Aboukir
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21 | * 75002 Paris - France
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22 | * http://www.linux-mandrake.com/
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23 | * http://www.mandrakesoft.com/
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24 | *
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25 | * This library is free software; you can redistribute it and/or
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26 | * modify it under the terms of the GNU Lesser General Public
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27 | * License as published by the Free Software Foundation; either
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28 | * version 2 of the License, or (at your option) any later version.
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29 | *
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30 | * This library is distributed in the hope that it will be useful,
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31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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33 | * Lesser General Public License for more details.
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34 | *
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35 | * You should have received a copy of the GNU Lesser General Public
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36 | * License along with this library; if not, write to the Free Software
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37 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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38 | *
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39 | */
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40 |
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41 |
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42 | /* Compile-time assertion macro. */
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43 | #define ct_assert(a) extern int ct_ass_arr[!!(a) == 1];
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44 |
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45 | /* For functions called from assembly code. */
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46 | #define BIOSCALL __cdecl
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47 |
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48 | #define BX_ELTORITO_BOOT 1
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49 | #define BX_PCIBIOS 1
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50 | #define BX_USE_PS2_MOUSE 1
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51 | #define BX_APM 1
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52 |
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53 | #ifndef DEBUG_ATA
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54 | # define DEBUG_ATA 0
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55 | #endif
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56 | #ifdef DEBUG_AHCI
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57 | # define DEBUG_AHCI 0
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58 | #endif
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59 | #ifndef DEBUG_SCSI
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60 | # define DEBUG_SCSI 0
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61 | #endif
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62 | #ifndef DEBUG_CD_BOOT
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63 | # define DEBUG_CD_BOOT 0
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64 | #endif
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65 | #ifndef DEBUG_ELTORITO
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66 | # define DEBUG_ELTORITO 0
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67 | #endif
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68 | #ifndef DEBUG_INT13_HD
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69 | # define DEBUG_INT13_HD 0
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70 | #endif
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71 | #ifndef DEBUG_INT13_FL
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72 | # define DEBUG_INT13_FL 0
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73 | #endif
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74 | #ifndef DEBUG_INT13_CD
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75 | # define DEBUG_INT13_CD 0
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76 | #endif
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77 | #ifndef DEBUG_INT15
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78 | # define DEBUG_INT15 0
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79 | #endif
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80 | #ifndef DEBUG_INT15_MS
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81 | # define DEBUG_INT15_MS 0
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82 | #endif
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83 | #ifndef DEBUG_INT16
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84 | # define DEBUG_INT16 0
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85 | #endif
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86 | #ifndef DEBUG_INT1A
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87 | # define DEBUG_INT1A 0
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88 | #endif
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89 | #ifndef DEBUG_INT74
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90 | # define DEBUG_INT74 0
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91 | #endif
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92 | #ifndef DEBUG_PCI
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93 | # define DEBUG_PCI 0
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94 | #endif
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95 | #ifndef DEBUG_APM
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96 | # define DEBUG_APM 0
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97 | #endif
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98 | #ifndef DEBUG_POST
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99 | # define DEBUG_POST 0
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100 | #endif
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101 |
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102 | #define FP_OFF(p) ((unsigned)(p))
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103 | #define FP_SEG(p) ((unsigned)((unsigned long)(void __far*)(p) >> 16))
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104 | #define MK_FP(s,o) (((unsigned short)(s)):>((void __near *)(o)))
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105 |
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106 | typedef struct {
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107 | union {
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108 | struct {
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109 | uint16_t di, si, bp, sp;
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110 | uint16_t bx, dx, cx, ax;
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111 | } r16;
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112 | struct {
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113 | uint16_t filler[4];
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114 | uint8_t bl, bh, dl, dh, cl, ch, al, ah;
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115 | } r8;
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116 | } u;
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117 | } pusha_regs_t;
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118 |
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119 | typedef struct {
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120 | union {
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121 | struct {
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122 | uint32_t edi, esi, ebp, esp;
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123 | uint32_t ebx, edx, ecx, eax;
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124 | } r32;
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125 | struct {
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126 | uint16_t di, filler1, si, filler2, bp, filler3, sp, filler4;
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127 | uint16_t bx, filler5, dx, filler6, cx, filler7, ax, filler8;
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128 | } r16;
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129 | struct {
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130 | uint32_t filler[4];
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131 | uint8_t bl, bh;
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132 | uint16_t filler1;
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133 | uint8_t dl, dh;
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134 | uint16_t filler2;
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135 | uint8_t cl, ch;
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136 | uint16_t filler3;
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137 | uint8_t al, ah;
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138 | uint16_t filler4;
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139 | } r8;
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140 | } u;
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141 | } pushad_regs_t;
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142 |
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143 | typedef struct {
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144 | union {
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145 | struct {
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146 | uint16_t flags;
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147 | } r16;
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148 | struct {
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149 | uint8_t flagsl;
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150 | uint8_t flagsh;
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151 | } r8;
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152 | } u;
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153 | } flags_t;
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154 |
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155 | typedef struct {
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156 | uint16_t ip;
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157 | uint16_t cs;
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158 | flags_t flags;
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159 | } iret_addr_t;
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160 |
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161 | typedef struct {
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162 | uint16_t ds;
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163 | uint16_t es;
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164 | pusha_regs_t gr;
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165 | iret_addr_t ra;
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166 | } disk_regs_t;
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167 |
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168 | typedef struct {
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169 | pusha_regs_t gr;
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170 | uint16_t es;
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171 | uint16_t ds;
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172 | iret_addr_t ra;
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173 | } kbd_regs_t;
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174 |
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175 | typedef struct {
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176 | pusha_regs_t gr;
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177 | uint16_t es;
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178 | uint16_t ds;
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179 | flags_t fl;
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180 | } sys_regs_t;
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181 |
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182 | typedef struct {
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183 | pushad_regs_t gr;
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184 | uint16_t es;
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185 | uint16_t ds;
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186 | flags_t fl;
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187 | } sys32_regs_t;
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188 |
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189 | typedef struct {
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190 | pusha_regs_t gr;
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191 | iret_addr_t ra;
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192 | } i1apci_regs_t;
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193 |
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194 |
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195 | #define SetCF(x) x.u.r8.flagsl |= 0x01
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196 | #define SetZF(x) x.u.r8.flagsl |= 0x40
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197 | #define ClearCF(x) x.u.r8.flagsl &= 0xfe
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198 | #define ClearZF(x) x.u.r8.flagsl &= 0xbf
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199 | #define GetCF(x) (x.u.r8.flagsl & 0x01)
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200 |
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201 | #define SET_AL(val8) AX = ((AX & 0xff00) | (val8))
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202 | #define SET_BL(val8) BX = ((BX & 0xff00) | (val8))
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203 | #define SET_CL(val8) CX = ((CX & 0xff00) | (val8))
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204 | #define SET_DL(val8) DX = ((DX & 0xff00) | (val8))
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205 | #define SET_AH(val8) AX = ((AX & 0x00ff) | ((val8) << 8))
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206 | #define SET_BH(val8) BX = ((BX & 0x00ff) | ((val8) << 8))
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207 | #define SET_CH(val8) CX = ((CX & 0x00ff) | ((val8) << 8))
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208 | #define SET_DH(val8) DX = ((DX & 0x00ff) | ((val8) << 8))
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209 |
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210 | #define GET_AL() ( AX & 0x00ff )
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211 | #define GET_BL() ( BX & 0x00ff )
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212 | #define GET_CL() ( CX & 0x00ff )
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213 | #define GET_DL() ( DX & 0x00ff )
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214 | #define GET_AH() ( AX >> 8 )
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215 | #define GET_BH() ( BX >> 8 )
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216 | #define GET_CH() ( CX >> 8 )
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217 | #define GET_DH() ( DX >> 8 )
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218 |
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219 | #define GET_ELDL() ( ELDX & 0x00ff )
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220 | #define GET_ELDH() ( ELDX >> 8 )
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221 |
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222 | #define SET_CF() FLAGS |= 0x0001
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223 | #define CLEAR_CF() FLAGS &= 0xfffe
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224 | #define GET_CF() (FLAGS & 0x0001)
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225 |
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226 | #define SET_ZF() FLAGS |= 0x0040
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227 | #define CLEAR_ZF() FLAGS &= 0xffbf
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228 | #define GET_ZF() (FLAGS & 0x0040)
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229 |
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230 | #define SET_IF() FLAGS |= 0x0200
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231 |
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232 | typedef unsigned short bx_bool;
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233 |
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234 | #define BX_VIRTUAL_PORTS 1 /* normal output to Bochs ports */
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235 | #define BX_DEBUG_SERIAL 0 /* output to COM1 */
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236 |
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237 | #define BIOS_PRINTF_HALT 1
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238 | #define BIOS_PRINTF_SCREEN 2
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239 | #define BIOS_PRINTF_INFO 4
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240 | #define BIOS_PRINTF_DEBUG 8
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241 | #define BIOS_PRINTF_ALL (BIOS_PRINTF_SCREEN | BIOS_PRINTF_INFO)
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242 | #define BIOS_PRINTF_DEBHALT (BIOS_PRINTF_SCREEN | BIOS_PRINTF_INFO | BIOS_PRINTF_HALT)
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243 |
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244 | extern const char bios_prefix_string[];
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245 | extern void bios_printf(uint16_t action, const char *s, ...);
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246 | extern void put_str(uint16_t action, const char __far *s);
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247 | extern void put_str_near(uint16_t action, const char __near *s);
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248 | extern uint8_t inb_cmos(uint8_t cmos_reg);
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249 | extern void outb_cmos(uint8_t cmos_reg, uint8_t val);
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250 | extern uint16_t cdrom_boot(void);
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251 | extern void show_logo(void);
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252 | extern void delay_boot(uint16_t secs);
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253 | extern bx_bool set_enable_a20(bx_bool val);
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254 |
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255 | #define printf(...) bios_printf(BIOS_PRINTF_SCREEN, __VA_ARGS__)
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256 |
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257 | // Defines the output macros.
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258 | // BX_DEBUG goes to INFO port until we can easily choose debug info on a
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259 | // per-device basis. Debug info are sent only in debug mode
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260 | #define DEBUG_ROMBIOS 1
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261 | #if DEBUG_ROMBIOS
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262 | # define BX_DEBUG(...) bios_printf(BIOS_PRINTF_INFO, __VA_ARGS__)
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263 | #else
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264 | # define BX_DEBUG(...)
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265 | #endif
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266 | #ifdef VBOX
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267 | #define BX_INFO(...) do { put_str(BIOS_PRINTF_INFO, bios_prefix_string); bios_printf(BIOS_PRINTF_INFO, __VA_ARGS__); } while (0)
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268 | #else /* !VBOX */
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269 | #define BX_INFO(...) bios_printf(BIOS_PRINTF_INFO, __VA_ARGS__)
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270 | #endif /* !VBOX */
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271 | #define BX_PANIC(...) bios_printf(BIOS_PRINTF_DEBHALT, __VA_ARGS__)
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272 |
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273 | /* Because we don't tell the recompiler when guest physical memory
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274 | * is written, it can incorrectly cache guest code overwritten by
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275 | * DMA (bus master or not). We just re-write the memory block to flush
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276 | * any of its caches. This is not exactly efficient, but works!
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277 | */
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278 | #define DMA_WORKAROUND 1
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279 |
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280 | /* Random hardware-related definitions. */
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281 |
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282 | #define PIC_MASTER 0x20
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283 | #define PIC_MASTER_MASK 0x21
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284 | #define PIC_SLAVE 0xA0
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285 | #define PIC_SLAVE_MASK 0xA1
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286 | #define PIC_CMD_EOI 0x20
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287 | #define PIC_CMD_RD_ISR 0x0B
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288 | #define PIC_CMD_INIT 0x11
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