ri61fcb.asm

<BIOS研发技术剖析>书的源代码,包括完整的BIOS汇编语言源程序.

        call    ConfigNumberToNodeData  ;Move proper values into node data
        popa
        clc
        ret
GetNodeDynamic  endp


;---------------------------------------;
; SetNodeStatic                         ;
;---------------------------------------;-------------------------------------;
; This function sets a device's configuration in CMOS.  This function is      ;
; called only during runtime.                                                 ;
;                                                                             ;
; Input:  AL = Node number                                                    ;
;         DS:SI = Pointer to the node                                         ;
;         Stack available                                                     ;
;                                                                             ;
; Output: CF = Set if error setting node, clear if no error                   ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
SetNodeStatic   proc near private
        pusha
        call    NodeDataToConfigNumber  ;AL = Entry # in DeviceConfigTable
        jc      SetNodeDone             ;Br if invalid config was requested

        mov     ah, al                  ;AH = 0/1/2/3/4 for
                                        ;     Disabled/3F8/2F8/3E8/2E8
        inc     ah                      ;AH = 1/2/3/4/5 for
                                        ;     Disabled/3F8/2F8/3E8/2E8
        mov     al, Q_IT8661F_COMB_PORT
        call    set_cmos_item_checksum
        clc

SetNodeDone:
        popa
        ret
SetNodeStatic   endp


;---------------------------------------;
; SetNodeDynamic                        ;
;---------------------------------------;-------------------------------------;
; This function sets a device's configuration directly into hardware.  This   ;
; function is called during POST and runtime.                                 ;
;                                                                             ;
; Input:  AL = Node number                                                    ;
;         DS:SI = Pointer to the node                                         ;
;         Stack available                                                     ;
;                                                                             ;
; Output: CF = Set if error setting node, clear if no error                   ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
SetNodeDynamic  proc near private
        pusha
        call    NodeDataToConfigNumber  ;AL = Entry # in DeviceConfigTable
        jc      SetNodeDone             ;Br if invalid config was requested
                                        ;AL = 0/1/2/3/4 for
                                        ;     Disabled/3F8/2F8/3E8/2E8
;       call    set_portB_decode_select ;configure the COMB I/O range in chipset
        call    SetHardwareConfig       ;Configure device to requested setting
        clc

SetNodeDone:
        popa
        ret
SetNodeDynamic  endp


;---------------------------------------;
; RegisterInit                          ;
;---------------------------------------;-------------------------------------;
; This function initializes the peripheral chip's registers to power on       ;
; defaults and prepares the chip for configuration.  The device should be     ;
; disabled so it is not detected as an off board device.                      ;
;                                                                             ;
; Input:  Nothing                                                             ;
;         Stack available                                                     ;
;                                                                             ;
; Output: Nothing                                                             ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
RegisterInit    proc near private
        call    IT8661FCommonRegisterInit
        ret
RegisterInit    endp


;---------------------------------------;
; GetAutoStatus                         ;
;---------------------------------------;-------------------------------------;
; This function reports if a peripheral chip device is set to auto or manual  ;
; in CMOS.                                                                    ;
;                                                                             ;
; Input:  AL = Node number                                                    ;
;         Stack available                                                     ;
;                                                                             ;
; Output: AL = 0 If device is set to AUTO mode in CMOS                        ;
;              1 If device is set to MANUAL mode in CMOS                      ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
GetAutoStatus   proc near private
        mov     al, Q_IT8661F_COMB_PORT
        call    get_cmos_item           ;AL = 0/1/2/3/4/5 for
                                        ;     AUTO/Disabled/3F8/2F8/3E8/2E8
        jz      GetAutoDone             ;Br if set to auto
        mov     al, 1                   ;Return manual value
GetAutoDone:
        ret
GetAutoStatus   endp


;---------------------------------------;
; IdeSetMode                            ;
;---------------------------------------;-------------------------------------;
; This routine should set the mode/DMA timing of an IDE peripheral device.    ;
;                                                                             ;
; Input:  PIO mode / DMA timing                                               ;
;         Stack available                                                     ;
;                                                                             ;
; Output:                                                                     ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
IdeSetMode      proc near private
        ret
IdeSetMode      endp


;---------------------------------------;
; AdjustSetup                           ;
;---------------------------------------;-------------------------------------;
; This routine programs any peripheral chip specific parameters which need to ;
; be programmed after SETUP e.g. Serial Port FIFO enable, Parallel Port       ;
; Direction, etc.  Please note that before setup, these parameters should be  ;
; set to disabled (normal) setting.  This routine is called from ADJUST_SETUP ;
; hook in PC1.ASM file.                                                       ;
;                                                                             ;
; Input:  Nothing                                                             ;
;         Stack available                                                     ;
;                                                                             ;
; Output: Nothing                                                             ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
AdjustSetup     proc near private
        push    ax
        and     cs:IT8661FSerialPortB, not PTFLAG_INVISIBLE_NODE
        call    GetHardwareConfig
        or      al, al
        jnz     @F                      ;Br if enabled
        or      cs:IT8661FSerialPortB, PTFLAG_INVISIBLE_NODE
@@:
        pop     ax
        ret
AdjustSetup     endp


;---------------------------------------;
; IsrInstall                            ;
;---------------------------------------;-------------------------------------;
; This routine may hook any interrupt vector.  This hook will be called only  ;
; when the BIOS is running from RAM, so any old vector address may be saved   ;
; in the code segment for chaining.                                           ;
;                                                                             ;
; Input:  Nothing                                                             ;
;         Stack available                                                     ;
;                                                                             ;
; Output: Nothing                                                             ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
IsrInstall      proc near private
        ret
IsrInstall      endp


;---------------------------------------;
; InitHotKey                            ;
;---------------------------------------;-------------------------------------;
; This routine can be used to do any peripheral programming after hot key     ;
; setup is run and system does not need to reboot. this routine is called     ;
; from HOT_KEY_ADJUST_SETUP.                                                  ;
;                                                                             ;
; Input:  Pointer to _old_cmos_buffer and _common_cmos_buffer ?.............. ;
;         DS = Segment of _old_cmos_buffer and _common_cmos_buffer            ;
;         Stack available                                                     ;
;                                                                             ;
; Output: Nothing                                                             ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
InitHotKey      proc near private
        ret
InitHotKey      endp


;---------------------------------------;
; InitBufferPrfOptimal                  ;
;---------------------------------------;-------------------------------------;
; This routine can be used to update _common_cmos_buffer in peripheral setup  ;
; screen when user loads optimal values.  This routine is called from         ;
; CMOS_SETUP.                                                                 ;
;                                                                             ;
; Input:  Pointer to _common_cmos_buffer ?.................                   ;
;         DS = ES = Segment of _common_cmos_buffer                            ;
;         Stack available                                                     ;
;                                                                             ;
; Output: Nothing                                                             ;
;                                                                             ;
; Destroys: Nothing                                                           ;
;-----------------------------------------------------------------------------;
InitBufferPrfOptimal    proc near private
        ret
InitBufferPrfOptimal    endp


;---------------------------------------;
; InitBufferPrfFailSafe                 ;
;---------------------------------------;-------------------------------------;
; This routine can be used to update _common_cmos_buffer in peripheral setup  ;
; screen when user loads fail safe values.  This routine is called from       ;
; CMOS_SETUP.                                                                 ;
;                                                                             ;
; Input:  Pointer to _common_cmos_buffer ?.................                   ;
;         DS = ES = Segment of _common_cmos_buffer                            ;