| [3] | 1 | ; Project name : XTIDE Universal BIOS
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| [86] | 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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| [3] | 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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| [97] | 14 |
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| [3] | 15 | ; Included .inc files
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| [88] | 16 | %include "AssemblyLibrary.inc" ; Assembly Library. Must be included first!
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| [3] | 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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| [88] | 38 | at ROMVARS.rgbSign, db "XTIDE120" ; Signature for flash program
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| [3] | 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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| [88] | 42 | db " (AT)=-",NULL
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| [3] | 43 | %elifdef USE_186
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| [88] | 44 | db " (XT+)=-",NULL
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| [3] | 45 | %else
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| [88] | 46 | db " (XT)=-",NULL
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| [3] | 47 | %endif
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| [97] | 48 | at ROMVARS.szVersion, db "v1.2.0_wip (",__DATE__,")",NULL
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| [3] | 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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| [93] | 54 | at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_DRVXLAT
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| [137] | 55 | at ROMVARS.wBootTimeout, dw 30 * TICKS_PER_SECOND ; Boot Menu selection timeout
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| [3] | 56 | at ROMVARS.bIdeCnt, db 3 ; Number of supported controllers
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| 57 | at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
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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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| [93] | 85 | at ROMVARS.wFlags, dw FLG_ROMVARS_DRVXLAT
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| [137] | 86 | at ROMVARS.wBootTimeout, dw 30 * TICKS_PER_SECOND ; Boot Menu selection timeout
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| [3] | 87 | at ROMVARS.bIdeCnt, db 1 ; Number of supported controllers
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| 88 | at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
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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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| [88] | 103 | %include "AssemblyLibrary.asm"
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| [3] | 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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| [33] | 108 | %include "Interrupts.asm" ; For Interrupt initialization
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| [3] | 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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| [96] | 122 | %include "BootSector.asm" ; For loading boot sector
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| 123 | %include "BootPrint.asm" ; For printing boot information
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| [3] | 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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| [140] | 137 | %include "HTimer.asm" ; For timeout and delay
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| [3] | 138 |
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| 139 | ; Include .asm files (Interrupt handlers)
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| 140 | %include "Int13h.asm" ; For Int 13h, Disk functions
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| [90] | 141 | %ifndef USE_AT
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| 142 | %include "Int19hLate.asm" ; For late initialization
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| 143 | %endif
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| [3] | 144 | %include "Int19hMenu.asm" ; For Int 19h, Boot Loader for Boot Menu
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| 145 |
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| 146 | ; Include .asm files (Hard Disk BIOS functions)
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| 147 | %include "AH0h_HReset.asm" ; Required by Int13h_Jump.asm
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| 148 | %include "AH1h_HStatus.asm" ; Required by Int13h_Jump.asm
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| 149 | %include "AH2h_HRead.asm" ; Required by Int13h_Jump.asm
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| 150 | %include "AH3h_HWrite.asm" ; Required by Int13h_Jump.asm
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| 151 | %include "AH4h_HVerify.asm" ; Required by Int13h_Jump.asm
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| 152 | %include "AH8h_HParams.asm" ; Required by Int13h_Jump.asm
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| 153 | %include "AH9h_HInit.asm" ; Required by Int13h_Jump.asm
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| 154 | %include "AHCh_HSeek.asm" ; Required by Int13h_Jump.asm
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| 155 | %include "AHDh_HReset.asm" ; Required by Int13h_Jump.asm
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| 156 | %include "AH10h_HReady.asm" ; Required by Int13h_Jump.asm
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| 157 | %include "AH11h_HRecal.asm" ; Required by Int13h_Jump.asm
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| 158 | %include "AH15h_HSize.asm" ; Required by Int13h_Jump.asm
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| 159 | %include "AH23h_HFeatures.asm" ; Required by Int13h_Jump.asm
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| 160 | %include "AH24h_HSetBlocks.asm" ; Required by Int13h_Jump.asm
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| 161 | %include "AH25h_HDrvID.asm" ; Required by Int13h_Jump.asm
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| 162 |
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| 163 |
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| 164 |
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| 165 | ; Fill with zeroes until size is what we want
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| [88] | 166 | ;times (CNT_ROM_BLOCKS*512)-($-$$) db 0
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