1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Authors : Tomi Tilli |
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3 | ; : aitotat@gmail.com |
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4 | ; : |
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5 | ; : Krister Nordvall |
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6 | ; : krille_n_@hotmail.com |
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7 | ; : |
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8 | ; Description : Main file for BIOS. This is the only file that needs |
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9 | ; to be compiled since other files are included to this |
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10 | ; file (so no linker needed, Nasm does it all). |
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11 | |
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12 | ORG 000h ; Code start offset 0000h |
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13 | |
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14 | |
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15 | ; Included .inc files |
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16 | %include "AssemblyLibrary.inc" ; Assembly Library. Must be included first! |
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17 | %include "Interrupts.inc" ; For interrupt equates |
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18 | %include "ATA_ID.inc" ; For ATA Drive Information structs |
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19 | %include "IdeRegisters.inc" ; For ATA Registers, flags and commands |
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20 | %include "Int13h.inc" ; Equates for INT 13h functions |
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21 | %include "CustomDPT.inc" ; For Disk Parameter Table |
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22 | %include "RomVars.inc" ; For ROMVARS and IDEVARS structs |
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23 | %include "RamVars.inc" ; For RAMVARS struct |
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24 | %include "BootVars.inc" ; For BOOTVARS and BOOTNFO structs |
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25 | %include "BootMenu.inc" ; For Boot Menu |
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26 | %include "IDE_8bit.inc" ; For IDE 8-bit data port macros |
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27 | |
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28 | |
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29 | ; Section containing code |
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30 | SECTION .text |
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31 | |
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32 | ; ROM variables (must start at offset 0) |
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33 | CNT_ROM_BLOCKS EQU 16 ; 16 * 512B = 8kB BIOS |
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34 | istruc ROMVARS |
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35 | at ROMVARS.wRomSign, dw 0AA55h ; PC ROM signature |
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36 | at ROMVARS.bRomSize, db CNT_ROM_BLOCKS ; ROM size in 512B blocks |
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37 | at ROMVARS.rgbJump, jmp Initialize_FromMainBiosRomSearch |
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38 | at ROMVARS.rgbSign, db "XTIDE120" ; Signature for flash program |
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39 | at ROMVARS.szTitle |
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40 | db "-=XTIDE Universal BIOS" |
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41 | %ifdef USE_AT |
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42 | db " (AT)=-",NULL |
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43 | %elifdef USE_186 |
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44 | db " (XT+)=-",NULL |
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45 | %else |
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46 | db " (XT)=-",NULL |
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47 | %endif |
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48 | at ROMVARS.szVersion, db "v1.2.0_wip (",__DATE__,")",NULL |
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49 | |
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50 | ;---------------------------; |
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51 | ; AT Build default settings ; |
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52 | ;---------------------------; |
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53 | %ifdef USE_AT |
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54 | at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_DRVXLAT |
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55 | at ROMVARS.bIdeCnt, db 3 ; Number of supported controllers |
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56 | at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive |
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57 | at ROMVARS.bBootDelay, db 30 ; Boot Menu selection delay (secs) |
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58 | at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives |
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59 | at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory |
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60 | |
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61 | at ROMVARS.ideVars0+IDEVARS.wPort, dw 1F0h ; Controller Command Block base port |
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62 | at ROMVARS.ideVars0+IDEVARS.wPortCtrl, dw 3F0h ; Controller Control Block base port |
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63 | at ROMVARS.ideVars0+IDEVARS.bBusType, db BUS_TYPE_16 ; Bus type |
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64 | at ROMVARS.ideVars0+IDEVARS.bIRQ, db 14 ; IRQ |
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65 | at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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66 | at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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67 | |
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68 | at ROMVARS.ideVars1+IDEVARS.wPort, dw 170h ; Controller Command Block base port |
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69 | at ROMVARS.ideVars1+IDEVARS.wPortCtrl, dw 370h ; Controller Control Block base port |
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70 | at ROMVARS.ideVars1+IDEVARS.bBusType, db BUS_TYPE_16 ; Bus type |
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71 | at ROMVARS.ideVars1+IDEVARS.bIRQ, db 15 ; IRQ |
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72 | at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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73 | at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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74 | |
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75 | at ROMVARS.ideVars2+IDEVARS.wPort, dw 300h ; Controller Command Block base port |
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76 | at ROMVARS.ideVars2+IDEVARS.wPortCtrl, dw 308h ; Controller Control Block base port |
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77 | at ROMVARS.ideVars2+IDEVARS.bBusType, db BUS_TYPE_8_DUAL ; Bus type |
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78 | at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0 ; IRQ |
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79 | at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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80 | at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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81 | %else |
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82 | ;-----------------------------------; |
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83 | ; XT and XT+ Build default settings ; |
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84 | ;-----------------------------------; |
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85 | at ROMVARS.wFlags, dw FLG_ROMVARS_DRVXLAT |
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86 | at ROMVARS.bIdeCnt, db 1 ; Number of supported controllers |
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87 | at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive |
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88 | at ROMVARS.bBootDelay, db 30 ; Boot Menu selection delay (secs) |
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89 | at ROMVARS.bMinFddCnt, db 1 ; Assume at least 1 floppy drive present if autodetect fails |
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90 | at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory in full mode |
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91 | |
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92 | at ROMVARS.ideVars0+IDEVARS.wPort, dw 300h ; Controller Command Block base port |
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93 | at ROMVARS.ideVars0+IDEVARS.wPortCtrl, dw 308h ; Controller Control Block base port |
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94 | at ROMVARS.ideVars0+IDEVARS.bBusType, db BUS_TYPE_8_DUAL ; Bus type |
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95 | at ROMVARS.ideVars0+IDEVARS.bIRQ, db 0 ; IRQ |
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96 | at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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97 | at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE |
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98 | %endif |
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99 | iend |
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100 | |
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101 | |
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102 | ; Include .asm files (static data and libraries) |
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103 | %include "AssemblyLibrary.asm" |
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104 | %include "Strings.asm" ; For BIOS message strings |
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105 | |
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106 | ; Include .asm files (Initialization and drive detection) |
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107 | %include "Initialize.asm" ; For BIOS initialization |
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108 | %include "Interrupts.asm" ; For Interrupt initialization |
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109 | %include "RamVars.asm" ; For RAMVARS initialization and access |
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110 | %include "CreateDPT.asm" ; For creating DPTs |
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111 | %include "FindDPT.asm" ; For finding DPTs |
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112 | %include "AccessDPT.asm" ; For accessing DPTs |
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113 | %include "BootInfo.asm" ; For creating BOOTNFO structs |
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114 | %include "AtaID.asm" ; For ATA Identify Device information |
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115 | %include "DetectDrives.asm" ; For detecting IDE drives |
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116 | %include "DetectPrint.asm" ; For printing drive detection strings |
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117 | |
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118 | ; Include .asm files (boot menu) |
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119 | %include "BootMenu.asm" ; For Boot Menu operations |
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120 | %include "BootMenuEvent.asm" ; For menu library event handling |
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121 | %include "FloppyDrive.asm" ; Floppy Drive related functions |
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122 | %include "BootSector.asm" ; For loading boot sector |
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123 | %include "BootPrint.asm" ; For printing boot information |
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124 | %include "BootMenuPrint.asm" ; For printing Boot Menu strings |
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125 | %include "BootMenuPrintCfg.asm" ; For printing hard disk configuration |
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126 | |
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127 | ; Include .asm files (general drive accessing) |
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128 | %include "DriveXlate.asm" ; For swapping drive numbers |
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129 | %include "HAddress.asm" ; For sector address translations |
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130 | %include "HCapacity.asm" ; For calculating drive capacity |
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131 | %include "HError.asm" ; For error checking |
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132 | %include "HPIO.asm" ; For PIO transfers |
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133 | %include "HIRQ.asm" ; For IRQ handling |
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134 | %include "HStatus.asm" ; For reading hard disk status |
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135 | %include "HDrvSel.asm" ; For selecting drive to access |
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136 | %include "HCommand.asm" ; For outputting command and parameters |
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137 | |
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138 | ; Include .asm files (Interrupt handlers) |
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139 | %include "Int13h.asm" ; For Int 13h, Disk functions |
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140 | %ifndef USE_AT |
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141 | %include "Int19hLate.asm" ; For late initialization |
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142 | %endif |
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143 | %include "Int19hMenu.asm" ; For Int 19h, Boot Loader for Boot Menu |
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144 | |
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145 | ; Include .asm files (Hard Disk BIOS functions) |
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146 | %include "AH0h_HReset.asm" ; Required by Int13h_Jump.asm |
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147 | %include "AH1h_HStatus.asm" ; Required by Int13h_Jump.asm |
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148 | %include "AH2h_HRead.asm" ; Required by Int13h_Jump.asm |
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149 | %include "AH3h_HWrite.asm" ; Required by Int13h_Jump.asm |
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150 | %include "AH4h_HVerify.asm" ; Required by Int13h_Jump.asm |
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151 | %include "AH8h_HParams.asm" ; Required by Int13h_Jump.asm |
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152 | %include "AH9h_HInit.asm" ; Required by Int13h_Jump.asm |
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153 | %include "AHCh_HSeek.asm" ; Required by Int13h_Jump.asm |
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154 | %include "AHDh_HReset.asm" ; Required by Int13h_Jump.asm |
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155 | %include "AH10h_HReady.asm" ; Required by Int13h_Jump.asm |
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156 | %include "AH11h_HRecal.asm" ; Required by Int13h_Jump.asm |
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157 | %include "AH15h_HSize.asm" ; Required by Int13h_Jump.asm |
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158 | %include "AH23h_HFeatures.asm" ; Required by Int13h_Jump.asm |
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159 | %include "AH24h_HSetBlocks.asm" ; Required by Int13h_Jump.asm |
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160 | %include "AH25h_HDrvID.asm" ; Required by Int13h_Jump.asm |
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161 | |
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162 | |
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163 | |
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164 | ; Fill with zeroes until size is what we want |
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165 | ;times (CNT_ROM_BLOCKS*512)-($-$$) db 0 |
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