1 | ; Project name : XTIDE Universal BIOS Configurator v2 |
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2 | ; Description : Functions for flashing the EEPROM. |
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3 | |
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4 | ; Section containing code |
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5 | SECTION .text |
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6 | |
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7 | ;-------------------------------------------------------------------- |
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8 | ; Flash_EepromWithFlashvarsInDSSI |
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9 | ; Parameters: |
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10 | ; DS:SI: Ptr to FLASHVARS |
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11 | ; Returns: |
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12 | ; FLASHVARS.flashResult |
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13 | ; Corrupts registers: |
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14 | ; All, including segments |
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15 | ;-------------------------------------------------------------------- |
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16 | ALIGN JUMP_ALIGN |
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17 | Flash_EepromWithFlashvarsInDSSI: |
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18 | mov [si+FLASHVARS.wProgressUpdateParam], bp ; Store handle to progress DIALOG |
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19 | mov bp, si ; Flashvars now in SS:BP |
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20 | mov cx, [bp+FLASHVARS.wPagesToFlash] |
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21 | ALIGN JUMP_ALIGN |
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22 | .FlashNextPage: |
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23 | call DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP |
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24 | call Flash_SinglePageWithFlashvarsInSSBP |
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25 | jc SHORT .PollingError |
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26 | call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP |
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27 | jne SHORT .DataVerifyError |
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28 | |
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29 | mov ax, [bp+FLASHVARS.wEepromPageSize] |
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30 | add [bp+FLASHVARS.fpNextSourcePage], ax |
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31 | add [bp+FLASHVARS.fpNextComparisonPage], ax |
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32 | add [bp+FLASHVARS.fpNextDestinationPage], ax |
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33 | |
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34 | loop .FlashNextPage |
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35 | %if FLASH_RESULT.success = 0 ; Just in case this should ever change |
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36 | mov [bp+FLASHVARS.flashResult], cl |
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37 | %else |
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38 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.success |
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39 | %endif |
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40 | ret |
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41 | |
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42 | .PollingError: |
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43 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.PollingTimeoutError |
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44 | ret |
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45 | .DataVerifyError: |
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46 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.DataVerifyError |
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47 | ret |
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48 | |
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49 | |
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50 | ;-------------------------------------------------------------------- |
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51 | ; Flash_SinglePageWithFlashvarsInSSBP |
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52 | ; Parameters: |
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53 | ; SS:BP: Ptr to FLASHVARS |
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54 | ; Returns: |
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55 | ; CF: Set if polling timeout error |
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56 | ; Cleared if page written successfully |
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57 | ; Corrupts registers: |
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58 | ; AX, BX, DX, SI, DI, DS, ES |
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59 | ;-------------------------------------------------------------------- |
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60 | ALIGN JUMP_ALIGN |
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61 | Flash_SinglePageWithFlashvarsInSSBP: |
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62 | cld |
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63 | call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP |
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64 | je SHORT .NoNeedToFlashThePage ; CF cleared |
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65 | |
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66 | push cx |
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67 | call .GetSdpCommandFunctionToDXwithFlashvarsInSSBP |
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68 | mov cx, [bp+FLASHVARS.wEepromPageSize] |
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69 | mov si, [bp+FLASHVARS.fpNextSourcePage] |
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70 | les di, [bp+FLASHVARS.fpNextComparisonPage] |
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71 | mov bx, [bp+FLASHVARS.fpNextDestinationPage] |
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72 | call WriteAllChangedBytesFromPageToEeprom |
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73 | pop cx |
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74 | .NoNeedToFlashThePage: |
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75 | ret |
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76 | |
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77 | ;-------------------------------------------------------------------- |
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78 | ; .GetSdpCommandFunctionToDXwithFlashvarsInSSBP |
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79 | ; Parameters: |
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80 | ; SS:BP: Ptr to FLASHVARS |
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81 | ; Returns: |
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82 | ; DX: Ptr to SDP Command function |
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83 | ; Corrupts registers: |
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84 | ; BX, SI |
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85 | ;-------------------------------------------------------------------- |
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86 | ALIGN JUMP_ALIGN |
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87 | .GetSdpCommandFunctionToDXwithFlashvarsInSSBP: |
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88 | eMOVZX bx, BYTE [bp+FLASHVARS.bEepromSdpCommand] |
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89 | mov si, [cs:bx+.rgpSdpCommandToEepromTypeLookupTable] |
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90 | mov bl, [bp+FLASHVARS.bEepromType] |
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91 | mov dx, [cs:bx+si] |
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92 | ret |
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93 | |
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94 | ALIGN WORD_ALIGN |
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95 | .rgpSdpCommandToEepromTypeLookupTable: |
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96 | dw .rgfnFlashWithoutSDP ; SDP_COMMAND.none |
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97 | dw .rgfnEnableSdpAndFlash ; SDP_COMMAND.enable |
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98 | dw .rgfnDisableSdpAndFlash ; SDP_COMMAND.disable |
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99 | .rgfnFlashWithoutSDP: ; SDP_COMMAND.none |
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100 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2816_2kiB |
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101 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB |
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102 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB_MOD |
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103 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28256_32kiB |
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104 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28512_64kiB |
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105 | .rgfnEnableSdpAndFlash: ; SDP_COMMAND.enable |
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106 | dw WriteSdpEnableCommandFor2816 ; EEPROM_TYPE.2816_2kiB |
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107 | dw WriteSdpEnableCommandFor2864 ; EEPROM_TYPE.2864_8kiB |
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108 | dw WriteSdpEnableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD |
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109 | dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB |
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110 | dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB |
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111 | .rgfnDisableSdpAndFlash: ; SDP_COMMAND.disable |
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112 | dw WriteSdpDisableCommandFor2816 ; EEPROM_TYPE.2816_2kiB |
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113 | dw WriteSdpDisableCommandFor2864 ; EEPROM_TYPE.2864_8kiB |
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114 | dw WriteSdpDisableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD |
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115 | dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB |
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116 | dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB |
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117 | |
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118 | |
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119 | ;-------------------------------------------------------------------- |
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120 | ; AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP |
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121 | ; Parameters: |
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122 | ; SS:BP: Ptr to FLASHVARS |
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123 | ; Returns: |
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124 | ; ZF: Set if pages are equal |
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125 | ; Cleared if pages are not equal |
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126 | ; Corrupts registers: |
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127 | ; SI, DI |
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128 | ;-------------------------------------------------------------------- |
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129 | ALIGN JUMP_ALIGN |
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130 | AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP: |
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131 | push cx |
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132 | mov cx, [bp+FLASHVARS.wEepromPageSize] |
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133 | lds si, [bp+FLASHVARS.fpNextSourcePage] |
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134 | les di, [bp+FLASHVARS.fpNextDestinationPage] |
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135 | repe cmpsb |
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136 | pop cx |
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137 | ret |
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138 | |
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139 | |
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140 | ;-------------------------------------------------------------------- |
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141 | ; ENABLE_SDP |
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142 | ; Parameters: |
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143 | ; %1: Offset for first command byte |
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144 | ; %2: Offset for second command byte |
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145 | ; DS: Segment to beginning of EEPROM |
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146 | ; Returns: |
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147 | ; Nothing |
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148 | ; Corrupts registers: |
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149 | ; Nothing |
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150 | ;-------------------------------------------------------------------- |
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151 | %macro ENABLE_SDP 2 |
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152 | mov BYTE [%1], 0AAh |
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153 | mov BYTE [%2], 55h |
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154 | mov BYTE [%1], 0A0h |
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155 | %endmacro |
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156 | |
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157 | ;-------------------------------------------------------------------- |
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158 | ; DISABLE_SDP |
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159 | ; Parameters: |
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160 | ; %1: Offset for first command byte |
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161 | ; %2: Offset for second command byte |
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162 | ; DS: Segment to beginning of EEPROM |
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163 | ; Returns: |
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164 | ; Nothing |
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165 | ; Corrupts registers: |
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166 | ; Nothing |
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167 | ;-------------------------------------------------------------------- |
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168 | %macro DISABLE_SDP 2 |
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169 | mov BYTE [%1], 0AAh |
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170 | mov BYTE [%2], 55h |
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171 | mov BYTE [%1], 80h |
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172 | mov BYTE [%1], 0AAh |
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173 | mov BYTE [%2], 55h |
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174 | mov BYTE [%1], 20h |
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175 | %endmacro |
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176 | |
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177 | ;-------------------------------------------------------------------- |
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178 | ; SDP Command Functions |
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179 | ; Parameters: |
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180 | ; DS: Segment to beginning of EEPROM |
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181 | ; Returns: |
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182 | ; Nothing but jumps to WriteActualDataByteAfterSdpCommand |
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183 | ; Corrupts registers: |
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184 | ; Nothing |
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185 | ;-------------------------------------------------------------------- |
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186 | ALIGN JUMP_ALIGN |
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187 | WriteSdpEnableCommandFor2816: |
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188 | ENABLE_SDP 555h, 2AAh |
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189 | jmp ReturnFromSdpCommand |
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190 | |
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191 | ALIGN JUMP_ALIGN |
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192 | WriteSdpEnableCommandFor2864: |
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193 | ENABLE_SDP 1555h, 0AAAh |
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194 | jmp ReturnFromSdpCommand |
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195 | |
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196 | ALIGN JUMP_ALIGN |
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197 | WriteSdpEnableCommandFor2864mod: |
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198 | ENABLE_SDP 155Ch, 0AA3h |
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199 | jmp ReturnFromSdpCommand |
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200 | |
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201 | ALIGN JUMP_ALIGN |
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202 | WriteSdpEnableCommandFor28256or28512: |
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203 | ENABLE_SDP 5555h, 2AAAh |
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204 | jmp ReturnFromSdpCommand |
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205 | |
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206 | |
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207 | ALIGN JUMP_ALIGN |
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208 | WriteSdpDisableCommandFor2816: |
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209 | DISABLE_SDP 555h, 2AAh |
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210 | jmp SHORT ReturnFromSdpCommand |
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211 | |
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212 | ALIGN JUMP_ALIGN |
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213 | WriteSdpDisableCommandFor2864: |
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214 | DISABLE_SDP 1555h, 0AAAh |
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215 | jmp SHORT ReturnFromSdpCommand |
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216 | |
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217 | ALIGN JUMP_ALIGN |
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218 | WriteSdpDisableCommandFor2864mod: |
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219 | DISABLE_SDP 155Ch, 0AA3h |
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220 | jmp SHORT ReturnFromSdpCommand |
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221 | |
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222 | ALIGN JUMP_ALIGN |
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223 | WriteSdpDisableCommandFor28256or28512: |
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224 | DISABLE_SDP 5555h, 2AAAh |
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225 | DoNotWriteAnySdpCommand: |
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226 | jmp SHORT ReturnFromSdpCommand |
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227 | |
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228 | |
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229 | ;-------------------------------------------------------------------- |
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230 | ; WriteNextChangedByteFromPageToEeprom |
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231 | ; Parameters: |
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232 | ; CX: Number of bytes left to write |
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233 | ; DX: Offset to SDP command function |
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234 | ; BX: Offset to next destination byte |
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235 | ; SI: Offset to next source byte |
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236 | ; ES:DI: Ptr to next comparison byte |
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237 | ; SS:BP: Ptr to FLASHVARS |
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238 | ; Returns: |
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239 | ; CF: Set if polling timeout error |
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240 | ; Cleared if page written successfully |
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241 | ; Corrupts registers: |
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242 | ; AX, BX, CX, SI, DI, DS, ES |
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243 | ;-------------------------------------------------------------------- |
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244 | ALIGN JUMP_ALIGN |
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245 | WriteAllChangedBytesFromPageToEeprom: |
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246 | mov ax, [bp+FLASHVARS.fpNextSourcePage+2] ; AX = Source segment |
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247 | mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS = EEPROM segment |
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248 | cli ; Disable interrupts |
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249 | jmp dx ; Write SDP command (once to the beginning of page) |
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250 | ALIGN JUMP_ALIGN |
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251 | ReturnFromSdpCommand: |
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252 | mov ds, ax ; DS:SI now points to source byte |
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253 | |
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254 | ALIGN JUMP_ALIGN |
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255 | .WriteActualDataByteAfterSdpCommand: |
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256 | lodsb ; Load source byte to AL |
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257 | scasb ; Compare source byte to comparison byte |
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258 | je SHORT .NoChangesForThisByte |
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259 | |
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260 | mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS:BX now points to EEPROM |
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261 | mov [bx], al ; Write byte to EEPROM |
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262 | mov ds, [bp+FLASHVARS.fpNextSourcePage+2] ; Restore DS |
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263 | mov [bp+FLASHVARS.wLastOffsetWritten], bx |
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264 | mov [bp+FLASHVARS.bLastByteWritten], al |
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265 | |
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266 | ALIGN JUMP_ALIGN |
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267 | .NoChangesForThisByte: |
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268 | inc bx ; Increment destination offset |
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269 | loop .WriteActualDataByteAfterSdpCommand |
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270 | sti ; Enable interrupts |
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271 | ; Fall to WaitUntilEepromPageWriteHasCompleted |
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272 | |
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273 | |
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274 | ;-------------------------------------------------------------------- |
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275 | ; WaitUntilEepromPageWriteHasCompleted |
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276 | ; Parameters: |
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277 | ; SS:BP: Ptr to FLASHVARS |
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278 | ; Returns: |
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279 | ; CF: Set if polling timeout error |
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280 | ; Cleared if page written successfully |
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281 | ; Corrupts registers: |
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282 | ; AX, BX, DI, DS, ES |
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283 | ;-------------------------------------------------------------------- |
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284 | ALIGN JUMP_ALIGN |
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285 | WaitUntilEepromPageWriteHasCompleted: |
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286 | call .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP |
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287 | mov es, [bp+FLASHVARS.fpNextDestinationPage+2] |
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288 | mov di, [bp+FLASHVARS.wLastOffsetWritten] |
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289 | ALIGN JUMP_ALIGN |
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290 | .PollEeprom: |
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291 | call .HasWriteCycleCompleted |
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292 | je SHORT .PageWriteCompleted ; CF cleared |
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293 | call TimerTicks_GetTimeoutTicksLeftToAXfromDSBX |
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294 | jnc SHORT .PollEeprom |
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295 | ALIGN JUMP_ALIGN |
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296 | .PageWriteCompleted: |
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297 | ret |
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298 | |
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299 | ;-------------------------------------------------------------------- |
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300 | ; .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP |
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301 | ; Parameters: |
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302 | ; SS:BP: Ptr to FLASHVARS |
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303 | ; Returns: |
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304 | ; DS:BX: Ptr to timeout counter variable |
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305 | ; Corrupts registers: |
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306 | ; AX |
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307 | ;-------------------------------------------------------------------- |
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308 | ALIGN JUMP_ALIGN |
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309 | .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP: |
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310 | push ss |
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311 | pop ds |
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312 | lea bx, [bp+FLASHVARS.wTimeoutCounter] |
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313 | mov ax, EEPROM_POLLING_TIMEOUT_TICKS |
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314 | jmp TimerTicks_InitializeTimeoutFromAX |
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315 | |
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316 | ;-------------------------------------------------------------------- |
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317 | ; .HasWriteCycleCompleted |
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318 | ; Parameters: |
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319 | ; ES:DI: Ptr to last written byte in EEPROM |
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320 | ; SS:BP: Ptr to FLASHVARS |
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321 | ; Returns: |
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322 | ; ZF: Set if write cycle has completed |
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323 | ; Cleared if write cycle in progress |
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324 | ; Corrupts registers: |
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325 | ; AX |
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326 | ;-------------------------------------------------------------------- |
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327 | ALIGN JUMP_ALIGN |
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328 | .HasWriteCycleCompleted: |
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329 | mov ah, [es:di] ; Load byte from EEPROM |
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330 | mov al, [bp+FLASHVARS.bLastByteWritten] |
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331 | and ax, 8080h ; Clear all but bit 7 from both bytes |
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332 | cmp al, ah ; Set ZF if high bits are the same |
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333 | ret |
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334 | |
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335 | |
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336 | ;-------------------------------------------------------------------- |
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337 | ; DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP |
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338 | ; Parameters: |
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339 | ; CX: Number of pages left to flash |
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340 | ; SS:BP: Ptr to FLASHVARS |
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341 | ; Returns: |
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342 | ; Nothing |
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343 | ; Corrupts registers: |
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344 | ; AX, DI |
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345 | ;-------------------------------------------------------------------- |
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346 | ALIGN JUMP_ALIGN |
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347 | DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP: |
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348 | push bp |
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349 | |
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350 | mov ax, [bp+FLASHVARS.wPagesToFlash] |
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351 | sub ax, cx |
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352 | mov bp, [bp+FLASHVARS.wProgressUpdateParam] ; BP now has MENU handle |
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353 | CALL_MENU_LIBRARY SetProgressValueFromAX |
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354 | |
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355 | pop bp |
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356 | ret |
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