1 | ; Project name : XTIDE Universal BIOS Configurator v2 |
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2 | ; Description : Functions to automatically configure XTIDE |
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3 | ; Universal BIOS for current system. |
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4 | |
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5 | ; |
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6 | ; XTIDE Universal BIOS and Associated Tools |
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7 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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8 | ; |
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9 | ; This program is free software; you can redistribute it and/or modify |
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10 | ; it under the terms of the GNU General Public License as published by |
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11 | ; the Free Software Foundation; either version 2 of the License, or |
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12 | ; (at your option) any later version. |
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13 | ; |
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14 | ; This program is distributed in the hope that it will be useful, |
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15 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | ; GNU General Public License for more details. |
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18 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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19 | ; |
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20 | |
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21 | ; Section containing code |
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22 | SECTION .text |
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23 | |
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24 | |
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25 | ;-------------------------------------------------------------------- |
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26 | ; AutoConfigure_ForThisSystem |
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27 | ; MENUITEM activation function (.fnActivate) |
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28 | ; Parameters: |
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29 | ; SS:BP: Ptr to MENU |
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30 | ; Returns: |
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31 | ; Nothing |
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32 | ; Corrupts registers: |
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33 | ; All, except segments |
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34 | ;-------------------------------------------------------------------- |
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35 | ALIGN JUMP_ALIGN |
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36 | AutoConfigure_ForThisSystem: |
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37 | push es |
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38 | push ds |
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39 | |
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40 | call Buffers_GetFileBufferToESDI ; ROMVARS now in ES:DI |
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41 | push es |
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42 | pop ds ; ROMVARS now in DS:DI |
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43 | call ChecksumSystemBios |
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44 | call DetectOlivettiM24 |
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45 | call ResetIdevarsToDefaultValues |
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46 | call DetectIdePortsAndDevices |
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47 | call EnableInterruptsForAllStandardControllers |
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48 | call StoreAndDisplayNumberOfControllers |
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49 | |
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50 | pop ds |
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51 | pop es |
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52 | .Return: |
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53 | ret |
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54 | |
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55 | |
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56 | ;-------------------------------------------------------------------- |
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57 | ; ChecksumSystemBios |
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58 | ; Parameters: |
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59 | ; DS:DI: Ptr to ROMVARS |
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60 | ; Returns: |
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61 | ; Nothing |
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62 | ; Corrupts registers: |
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63 | ; AX, BX, CX, DX, SI |
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64 | ;-------------------------------------------------------------------- |
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65 | ALIGN JUMP_ALIGN |
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66 | ChecksumSystemBios: |
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67 | push ds |
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68 | mov si, 0F000h |
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69 | mov ds, si |
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70 | mov si, 0FFFFh |
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71 | ; DS:SI now points to the end of the System BIOS. |
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72 | std |
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73 | mov cx, 32768 ; The smallest known problematic BIOS so far. |
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74 | mov dx, si ; Initialize the checksum |
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75 | call CalculateCRC_CCITTfromDSSIwithSizeInCX |
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76 | pop ds |
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77 | mov bx, .Checksums |
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78 | cld |
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79 | .NextChecksum: |
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80 | mov ax, [cs:bx] |
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81 | test ax, ax |
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82 | jz SHORT AutoConfigure_ForThisSystem.Return |
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83 | inc bx |
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84 | inc bx |
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85 | cmp ax, dx |
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86 | jne SHORT .NextChecksum |
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87 | or BYTE [di+ROMVARS.wFlags], FLG_ROMVARS_CLEAR_BDA_HD_COUNT |
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88 | mov dx, g_szDlgBadBiosFound |
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89 | jmp Dialogs_DisplayNotificationFromCSDX |
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90 | |
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91 | ALIGN WORD_ALIGN |
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92 | .Checksums: |
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93 | dw 0D192h ; 32 KB Zenith Z-161 (071784) |
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94 | dw 02F69h ; 32 KB Zenith Z-171 (031485) |
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95 | dw 0 |
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96 | |
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97 | |
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98 | ;-------------------------------------------------------------------- |
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99 | ; CalculateCRC_CCITTfromDSSIwithSizeInCX |
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100 | ; Parameters: |
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101 | ; DS:SI: Pointer to string to checksum |
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102 | ; CX: Length of string to checksum |
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103 | ; DX: Checksum (initially 0FFFFh) |
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104 | ; DF: Set/Clear depending on direction wanted |
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105 | ; Returns: |
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106 | ; DX: Checksum |
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107 | ; DS:SI: Pointer to byte after the end of checksummed string |
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108 | ; Corrupts registers: |
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109 | ; AX, BX, CX |
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110 | ;-------------------------------------------------------------------- |
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111 | ALIGN JUMP_ALIGN |
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112 | CalculateCRC_CCITTfromDSSIwithSizeInCX: |
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113 | ; jcxz .Return |
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114 | xor bh, bh |
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115 | mov ah, 0E0h |
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116 | .NextByte: |
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117 | lodsb |
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118 | xor dh, al |
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119 | mov bl, dh |
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120 | %ifdef USE_186 |
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121 | rol bx, 4 |
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122 | %else |
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123 | rol bx, 1 |
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124 | rol bx, 1 |
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125 | rol bx, 1 |
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126 | rol bx, 1 |
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127 | %endif |
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128 | xor dx, bx |
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129 | rol bx, 1 |
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130 | xchg dh, dl |
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131 | xor dx, bx |
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132 | %ifdef USE_186 |
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133 | ror bx, 4 |
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134 | %else |
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135 | ror bx, 1 |
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136 | ror bx, 1 |
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137 | ror bx, 1 |
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138 | ror bx, 1 |
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139 | %endif |
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140 | and bl, ah |
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141 | xor dx, bx |
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142 | ror bx, 1 |
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143 | xor dh, bl |
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144 | loop .NextByte |
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145 | ;.Return: |
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146 | ret |
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147 | |
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148 | |
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149 | ;-------------------------------------------------------------------- |
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150 | ; DetectOlivettiM24 |
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151 | ; Parameters: |
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152 | ; Nothing |
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153 | ; Returns: |
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154 | ; ZF: Set if computer is not an Olivetti M24 |
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155 | ; Clear if computer is an Olivetti M24 |
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156 | ; Corrupts registers: |
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157 | ; AX, BX, CX, DX |
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158 | ;-------------------------------------------------------------------- |
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159 | ALIGN JUMP_ALIGN |
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160 | DetectOlivettiM24: |
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161 | mov ah, 0FEh ; Request the current date and time |
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162 | mov ch, 0FFh ; Set the hours to an invalid value |
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163 | int BIOS_TIME_PCI_PNP_INTERRUPT_1Ah |
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164 | inc ch ; Hours changed? |
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165 | jz SHORT .ThisIsNotAnOlivettiM24 |
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166 | mov BYTE [cs:bIsOlivettiM24], 1 |
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167 | .ThisIsNotAnOlivettiM24: |
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168 | ret |
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169 | |
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170 | bIsOlivettiM24: |
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171 | db 0 |
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172 | |
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173 | |
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174 | ;-------------------------------------------------------------------- |
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175 | ; ResetIdevarsToDefaultValues |
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176 | ; Parameters: |
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177 | ; DS:DI: Ptr to ROMVARS |
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178 | ; ES:DI: Ptr to ROMVARS |
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179 | ; Returns: |
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180 | ; Nothing |
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181 | ; Corrupts registers: |
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182 | ; AX, CX |
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183 | ;-------------------------------------------------------------------- |
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184 | ALIGN JUMP_ALIGN |
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185 | ResetIdevarsToDefaultValues: |
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186 | push di |
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187 | add di, BYTE ROMVARS.ideVarsBegin |
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188 | mov cx, ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin |
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189 | call Memory_ZeroESDIwithSizeInCX ; Never clears ROMVARS.ideVarsSerialAuto |
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190 | pop di |
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191 | |
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192 | ; Set default values (other than zero) |
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193 | mov ax, DISABLE_WRITE_CACHE | (TRANSLATEMODE_AUTO<<TRANSLATEMODE_FIELD_POSITION) | FLG_DRVPARAMS_BLOCKMODE |
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194 | mov [di+ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags], ax |
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195 | mov [di+ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags], ax |
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196 | |
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197 | mov [di+ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags], ax |
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198 | mov [di+ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags], ax |
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199 | |
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200 | mov [di+ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags], ax |
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201 | mov [di+ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags], ax |
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202 | |
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203 | mov [di+ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags], ax |
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204 | mov [di+ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags], ax |
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205 | ret |
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206 | |
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207 | |
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208 | ;-------------------------------------------------------------------- |
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209 | ; DetectIdePortsAndDevices |
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210 | ; Parameters: |
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211 | ; DS:DI: Ptr to ROMVARS |
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212 | ; Returns: |
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213 | ; CX: Number of controllers detected |
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214 | ; Corrupts registers: |
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215 | ; AX, BX, DX, SI |
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216 | ;-------------------------------------------------------------------- |
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217 | ALIGN JUMP_ALIGN |
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218 | DetectIdePortsAndDevices: |
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219 | xor cx, cx ; Number of devices found |
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220 | xor dx, dx ; IDE_PORT_TO_START_DETECTION |
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221 | lea si, [di+ROMVARS.ideVarsBegin] ; DS:SI points to first IDEVARS |
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222 | |
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223 | .DetectFromNextPort: |
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224 | call IdeAutodetect_IncrementDXtoNextIdeBasePort |
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225 | jz SHORT .AllPortsAlreadyDetected |
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226 | push si |
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227 | call IdeAutodetect_DetectIdeDeviceFromPortDXAndReturnControlBlockInSI |
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228 | mov bx, si |
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229 | pop si |
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230 | jc SHORT .DetectFromNextPort |
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231 | |
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232 | ; Device found from port DX, Device Type returned in AL |
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233 | inc cx ; Increment number of controllers found |
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234 | mov [si+IDEVARS.wBasePort], dx |
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235 | mov [si+IDEVARS.wControlBlockPort], bx |
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236 | mov [si+IDEVARS.bDevice], al |
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237 | |
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238 | ; Point to next IDEVARS |
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239 | add si, IDEVARS_size |
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240 | cmp si, ROMVARS.ideVars3 |
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241 | jbe SHORT .DetectFromNextPort |
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242 | .AllPortsAlreadyDetected: |
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243 | ret |
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244 | |
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245 | |
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246 | ;-------------------------------------------------------------------- |
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247 | ; EnableInterruptsForAllStandardControllers |
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248 | ; Parameters: |
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249 | ; DS:DI: Ptr to ROMVARS |
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250 | ; CX: Number of controllers detected |
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251 | ; Returns: |
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252 | ; Nothing |
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253 | ; Corrupts registers: |
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254 | ; AX |
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255 | ;-------------------------------------------------------------------- |
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256 | ALIGN JUMP_ALIGN |
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257 | EnableInterruptsForAllStandardControllers: |
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258 | jcxz .NoControllersDetected |
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259 | test BYTE [ROMVARS.wFlags+1], FLG_ROMVARS_MODULE_IRQ >> 8 |
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260 | jz SHORT .NoModuleIrq |
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261 | call Buffers_IsXTbuildLoaded |
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262 | je SHORT .DoNotEnableIRQforXTbuilds |
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263 | push di |
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264 | push cx |
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265 | |
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266 | add di, BYTE ROMVARS.ideVars0 ; DS:DI now points first IDEVARS |
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267 | .CheckNextController: |
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268 | mov al, 14 |
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269 | cmp WORD [di+IDEVARS.wBasePort], DEVICE_ATA_PRIMARY_PORT |
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270 | je SHORT .EnableIrqAL |
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271 | |
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272 | inc ax ; 15 |
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273 | cmp WORD [di+IDEVARS.wBasePort], DEVICE_ATA_SECONDARY_PORT |
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274 | |
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275 | %if 0 |
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276 | je SHORT .EnableIrqAL |
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277 | |
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278 | ; Defaults on the GSI Inc. Model 2C EIDE controller |
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279 | mov al, 11 |
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280 | cmp WORD [di+IDEVARS.wBasePort], DEVICE_ATA_TERTIARY_PORT |
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281 | je SHORT .EnableIrqAL |
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282 | |
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283 | dec ax ; 10 |
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284 | cmp WORD [di+IDEVARS.wBasePort], DEVICE_ATA_QUATERNARY_PORT |
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285 | %endif |
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286 | |
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287 | jne SHORT .DoNotEnableIRQ |
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288 | |
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289 | .EnableIrqAL: |
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290 | mov [di+IDEVARS.bIRQ], al |
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291 | .DoNotEnableIRQ: |
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292 | add di, IDEVARS_size |
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293 | loop .CheckNextController |
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294 | pop cx |
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295 | pop di |
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296 | .DoNotEnableIRQforXTbuilds: |
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297 | .NoModuleIrq: |
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298 | .NoControllersDetected: |
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299 | ret |
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300 | |
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301 | |
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302 | ;-------------------------------------------------------------------- |
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303 | ; StoreAndDisplayNumberOfControllers |
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304 | ; Parameters: |
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305 | ; CX: Number of controllers detected |
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306 | ; DS:DI: Ptr to ROMVARS |
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307 | ; SS:BP: Ptr to MENU |
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308 | ; Returns: |
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309 | ; Nothing |
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310 | ; Corrupts registers: |
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311 | ; AX, BX, DX, DI, SI, DS, ES |
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312 | ;-------------------------------------------------------------------- |
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313 | ALIGN JUMP_ALIGN |
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314 | StoreAndDisplayNumberOfControllers: |
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315 | xor ax, ax |
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316 | or al, cl |
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317 | jnz SHORT .AtLeastOneController |
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318 | inc ax ; Cannot store zero |
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319 | .AtLeastOneController: |
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320 | test BYTE [di+ROMVARS.wFlags], FLG_ROMVARS_FULLMODE |
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321 | jnz SHORT .FullModeSoNoNeedToLimit |
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322 | MIN_U al, MAX_LITE_MODE_CONTROLLERS |
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323 | .FullModeSoNoNeedToLimit: |
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324 | |
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325 | ; Store number of IDE Controllers. This will also modify |
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326 | ; menu and set unsaved changes flag. |
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327 | push cs |
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328 | pop ds |
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329 | mov si, g_MenuitemConfigurationIdeControllers |
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330 | call Menuitem_StoreValueFromAXtoMenuitemInDSSI |
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331 | |
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332 | ; Display results (should be changed to proper string formatting) |
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333 | add cl, '0' |
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334 | mov [cs:g_bControllersDetected], cl |
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335 | mov dx, g_szDlgAutoConfigure |
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336 | jmp Dialogs_DisplayNotificationFromCSDX |
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