source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Main.asm@ 188

; Project name  :   XTIDE Universal BIOS
; Authors       :   Tomi Tilli
;               :   aitotat@gmail.com
;               :
;               :   Greg Lindhorst
;               :   gregli@hotmail.com
;               ;
;               :   Krister Nordvall
;               :   krille_n_@hotmail.com
;               :
; Description   :   Main file for BIOS. This is the only file that needs
;                   to be compiled since other files are included to this
;                   file (so no linker needed, Nasm does it all).

ORG 000h                        ; Code start offset 0000h

%define MENUEVENT_INLINE_OFFSETS    ; Only one menu required, save space and inline offsets
        
    ; Included .inc files
    %include "AssemblyLibrary.inc"  ; Assembly Library. Must be included first!
    %include "IntController.inc"    ; For Interrupt Controller equates
    %include "ATA_ID.inc"           ; For ATA Drive Information structs
    %include "IdeRegisters.inc"     ; For ATA Registers, flags and commands
    %include "Int13h.inc"           ; Equates for INT 13h functions
%ifdef MODULE_EBIOS
    %include "EBIOS.inc"            ; Equates for EBIOS functions
%endif
    %include "CustomDPT.inc"        ; For Disk Parameter Table
    %include "RomVars.inc"          ; For ROMVARS and IDEVARS structs
    %include "RamVars.inc"          ; For RAMVARS struct
    %include "BootVars.inc"         ; For BOOTVARS and BOOTNFO structs
    %include "BootMenu.inc"         ; For Boot Menu
    %include "IDE_8bit.inc"         ; For IDE 8-bit data port macros
    %include "DeviceIDE.inc"        ; For IDE device equates


; Section containing code
SECTION .text

; ROM variables (must start at offset 0)
CNT_ROM_BLOCKS      EQU     16  ; 16 * 512B = 8kB BIOS
istruc ROMVARS
    at  ROMVARS.wRomSign,   dw  0AA55h          ; PC ROM signature
    at  ROMVARS.bRomSize,   db  CNT_ROM_BLOCKS  ; ROM size in 512B blocks
    at  ROMVARS.rgbJump,    jmp Initialize_FromMainBiosRomSearch
    at  ROMVARS.rgbSign,    db  "XTIDE120"      ; Signature for flash program
    at  ROMVARS.szTitle
        db  "-=XTIDE Universal BIOS"
%ifdef USE_AT
        db  " (AT)=-",NULL
%elifdef USE_186
        db  " (XT+)=-",NULL
%else
        db  " (XT)=-",NULL
%endif
    at  ROMVARS.szVersion,  db  "v1.2.0_wip (",__DATE__,")",NULL

;;; For OR'ing into wFlags below
;;;
%ifdef MODULE_SERIAL
    MAIN_FLG_MODULE_SERIAL  equ FLG_ROMVARS_MODULE_SERIAL
%else
    MAIN_FLG_MODULE_SERIAL  equ 0
%endif

%ifdef MODULE_EBIOS
    MAIN_FLG_MODULE_EBIOS   equ FLG_ROMVARS_MODULE_EBIOS
%else
    MAIN_FLG_MODULE_EBIOS   equ 0
%endif

;---------------------------;
; AT Build default settings ;
;---------------------------;
%ifdef USE_AT
    at  ROMVARS.wFlags,         dw  FLG_ROMVARS_FULLMODE | FLG_ROMVARS_DRVXLAT | MAIN_FLG_MODULE_SERIAL | MAIN_FLG_MODULE_EBIOS
    at  ROMVARS.wDisplayMode,   dw  DEFAULT_TEXT_MODE
    at  ROMVARS.wBootTimeout,   dw  30 * TICKS_PER_SECOND   ; Boot Menu selection timeout
    at  ROMVARS.bIdeCnt,        db  4                       ; Number of supported controllers
    at  ROMVARS.bBootDrv,       db  80h                     ; Boot Menu default drive
    at  ROMVARS.bMinFddCnt,     db  0                       ; Do not force minimum number of floppy drives
    at  ROMVARS.bStealSize,     db  1                       ; Steal 1kB from base memory

    at  ROMVARS.ideVars0+IDEVARS.wPort,         dw  1F0h            ; Controller Command Block base port
    at  ROMVARS.ideVars0+IDEVARS.wPortCtrl,     dw  3F0h            ; Controller Control Block base port
    at  ROMVARS.ideVars0+IDEVARS.bDevice,       db  DEVICE_16BIT_ATA
    at  ROMVARS.ideVars0+IDEVARS.bIRQ,          db  0
    at  ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars1+IDEVARS.wPort,         dw  170h            ; Controller Command Block base port
    at  ROMVARS.ideVars1+IDEVARS.wPortCtrl,     dw  370h            ; Controller Control Block base port
    at  ROMVARS.ideVars1+IDEVARS.bDevice,       db  DEVICE_16BIT_ATA
    at  ROMVARS.ideVars1+IDEVARS.bIRQ,          db  0
    at  ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars2+IDEVARS.wPort,         dw  300h            ; Controller Command Block base port
    at  ROMVARS.ideVars2+IDEVARS.wPortCtrl,     dw  308h            ; Controller Control Block base port
    at  ROMVARS.ideVars2+IDEVARS.bDevice,       db  DEVICE_8BIT_DUAL_PORT_XTIDE
    at  ROMVARS.ideVars2+IDEVARS.bIRQ,          db  0
    at  ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars3+IDEVARS.wPort,         dw  168h            ; Controller Command Block base port
    at  ROMVARS.ideVars3+IDEVARS.wPortCtrl,     dw  368h            ; Controller Control Block base port
    at  ROMVARS.ideVars3+IDEVARS.bDevice,       db  DEVICE_16BIT_ATA
    at  ROMVARS.ideVars3+IDEVARS.bIRQ,          db  0
    at  ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

%ifdef MODULE_SERIAL
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice,      db  DEVICE_SERIAL_PORT
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
%endif
%else
;-----------------------------------;
; XT and XT+ Build default settings ;
;-----------------------------------;
    at  ROMVARS.wFlags,         dw  FLG_ROMVARS_DRVXLAT | MAIN_FLG_MODULE_SERIAL | MAIN_FLG_MODULE_EBIOS
    at  ROMVARS.wDisplayMode,   dw  DEFAULT_TEXT_MODE
    at  ROMVARS.wBootTimeout,   dw  30 * TICKS_PER_SECOND   ; Boot Menu selection timeout
    at  ROMVARS.bIdeCnt,        db  1                       ; Number of supported controllers
    at  ROMVARS.bBootDrv,       db  80h                     ; Boot Menu default drive
    at  ROMVARS.bMinFddCnt,     db  1                       ; Assume at least 1 floppy drive present if autodetect fails
    at  ROMVARS.bStealSize,     db  1                       ; Steal 1kB from base memory in full mode

    at  ROMVARS.ideVars0+IDEVARS.wPort,         dw  300h            ; Controller Command Block base port
    at  ROMVARS.ideVars0+IDEVARS.wPortCtrl,     dw  308h            ; Controller Control Block base port
    at  ROMVARS.ideVars0+IDEVARS.bDevice,       db  DEVICE_8BIT_DUAL_PORT_XTIDE
    at  ROMVARS.ideVars0+IDEVARS.bIRQ,          db  0               ; IRQ
    at  ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

    at  ROMVARS.ideVars3+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVars3+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,   db  FLG_DRVPARAMS_BLOCKMODE

%ifdef MODULE_SERIAL
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.bDevice,      db  DEVICE_SERIAL_PORT
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db  FLG_DRVPARAMS_BLOCKMODE
    at  ROMVARS.ideVarsSerialAuto+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags,  db  FLG_DRVPARAMS_BLOCKMODE
%endif
%endif
iend

    ; Libraries and data
    %include "AssemblyLibrary.asm"
%ifdef MODULE_STRINGS_COMPRESSED
    %include "StringsCompressed.asm"
%else
    %include "Strings.asm"          ; For BIOS message strings
%endif

    ; Initialization and drive detection
    %include "Initialize.asm"       ; For BIOS initialization
    %include "Interrupts.asm"       ; For Interrupt initialization
    %include "RamVars.asm"          ; For RAMVARS initialization and access
    %include "CreateDPT.asm"        ; For creating DPTs
    %include "FindDPT.asm"          ; For finding DPTs
    %include "AccessDPT.asm"        ; For accessing DPTs
    %include "BootInfo.asm"         ; For creating BOOTNFO structs
    %include "AtaID.asm"            ; For ATA Identify Device information
    %include "DetectDrives.asm"     ; For detecting IDE drives
    %include "DetectPrint.asm"      ; For printing drive detection strings

    ; Boot menu
    %include "BootMenu.asm"         ; For Boot Menu operations
    %include "BootMenuEvent.asm"    ; For menu library event handling
    %include "BootMenuPrint.asm"    ; For printing Boot Menu strings (needs to come after BootMenuEvent.asm)
    %include "FloppyDrive.asm"      ; Floppy Drive related functions
    %include "BootSector.asm"       ; For loading boot sector
    %include "BootPrint.asm"        ; For printing boot information
    %include "BootMenuPrintCfg.asm" ; For printing hard disk configuration

    ; Boot loader
%ifndef USE_AT
    %include "Int19hLate.asm"       ; For late initialization
%endif
    %include "Int19hMenu.asm"       ; For Int 19h, Boot Loader for Boot Menu

    ; For all device types
    %include "Device.asm"
    %include "Idepack.asm"
    %include "Timer.asm"            ; For timeout and delay

    ; IDE Device support
    %include "IdeCommand.asm"
    %include "IdeTransfer.asm"      ; Must be included after IdeCommand.asm
    %include "IdeDPT.asm"
    %include "IdeIO.asm"
    %include "IdeIrq.asm"
    %include "IdeWait.asm"
    %include "IdeError.asm"         ; Must be included after IdeWait.asm

%ifdef MODULE_SERIAL                ; Serial Port Device support
    %include "SerialCommand.asm"
    %include "SerialDPT.asm"
%endif

    ; INT 13h Hard Disk BIOS functions
    %include "DriveXlate.asm"       ; For swapping drive numbers
    %include "Address.asm"          ; For sector address translations
    %include "CommandLookup.asm"    ; For getting correct transfer command
    %include "Int13h.asm"           ; For Int 13h, Disk functions
    %include "AH0h_HReset.asm"      ; Required by Int13h_Jump.asm
    %include "AH1h_HStatus.asm"     ; Required by Int13h_Jump.asm
    %include "AH2h_HRead.asm"       ; Required by Int13h_Jump.asm
    %include "AH3h_HWrite.asm"      ; Required by Int13h_Jump.asm
    %include "AH4h_HVerify.asm"     ; Required by Int13h_Jump.asm
    %include "AH8h_HParams.asm"     ; Required by Int13h_Jump.asm
    %include "AH9h_HInit.asm"       ; Required by Int13h_Jump.asm
    %include "AHCh_HSeek.asm"       ; Required by Int13h_Jump.asm
    %include "AHDh_HReset.asm"      ; Required by Int13h_Jump.asm
    %include "AH10h_HReady.asm"     ; Required by Int13h_Jump.asm
    %include "AH11h_HRecal.asm"     ; Required by Int13h_Jump.asm
    %include "AH15h_HSize.asm"      ; Required by Int13h_Jump.asm
    %include "AH23h_HFeatures.asm"  ; Required by Int13h_Jump.asm
    %include "AH24h_HSetBlocks.asm" ; Required by Int13h_Jump.asm
    %include "AH25h_HDrvID.asm"     ; Required by Int13h_Jump.asm
%ifdef MODULE_EBIOS
    %include "AH41h_CheckIfExtensionsPresent.asm"
    %include "AH42h_ExtendedReadSectors.asm"
    %include "AH43h_ExtendedWriteSectors.asm"
    %include "AH44h_ExtendedVerifySectors.asm"
    %include "AH47h_ExtendedSeek.asm"
    %include "AH48h_GetExtendedDriveParameters.asm"
%endif


; Fill with zeroes until size is what we want
;times (CNT_ROM_BLOCKS*512)-($-$$) db 0