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Rev 4434 Rev 4923
Line 399... Line 399...
399 
; set up esp
 399 
; set up esp
400 
        movzx   esp, sp
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        movzx   esp, sp
Line 401... Line 401...
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 401 
 
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        push    0
 402 
        push    0
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        pop     es
 - 
 
404 
        xor     ax, ax
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        and     word [es:BOOT_IDE_BASE_ADDR], ax        ;0
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        and     word [es:BOOT_IDE_BAR0_16], ax  ;0
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407 
        and     word [es:BOOT_IDE_BAR1_16], ax  ;0
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        and     word [es:BOOT_IDE_BAR2_16], ax  ;0
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        and     word [es:BOOT_IDE_BAR3_16], ax  ;0
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; \begin{Mario79}
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411 
; find HDD IDE DMA PCI device
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; check for PCI BIOS
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        mov     ax, 0xB101
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        int     0x1A
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        jc      .nopci
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        cmp     edx, 'PCI '
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        jnz     .nopci
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; find PCI class code
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419 
; class 1 = mass storage
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420 
; subclass 1 = IDE controller
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421 
; a) class 1, subclass 1, programming interface 0x80
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; This is a Parallel IDE Controller which uses IRQs 14 and 15.
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x80
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        mov     [es:BOOT_IDE_PI_16], cx
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        xor     si, si  ; device index = 0
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        int     0x1A
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        jnc     .found_1 ; Parallel IDE Controller
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; b) class 1, subclass 1, programming interface 0x8f
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x8f
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        mov     [es:BOOT_IDE_PI_16], cx
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        xor     si, si  ; device index = 0
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        int     0x1A
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        jnc     .found_1
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; c) class 1, subclass 1, programming interface 0x85
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x85
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        mov     [es:BOOT_IDE_PI_16], cx
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        xor     si, si  ; device index = 0
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        int     0x1A
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        jnc     .found_1
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443 
; d) class 1, subclass 1, programming interface 0x8A
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444 
; This is a Parallel IDE Controller which uses IRQs 14 and 15.
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x8A
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        mov     [es:BOOT_IDE_PI_16], cx
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        xor     si, si  ; device index = 0
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        int     0x1A
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        jnc     .found_1 ; Parallel IDE Controller
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; Controller not found!
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        xor     ax, ax
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        mov     [es:BOOT_IDE_PI_16], ax
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        jmp     .nopci
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;--------------------------------------
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.found_1:
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457 
; get memory base BAR4
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458 
        mov     ax, 0xB10A
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        mov     di, 0x20        ; memory base is config register at 0x20
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        push    cx
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461 
        int     0x1A
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        jc      .no_BAR4        ;.nopci
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463 
        and     cx, 0xFFFC      ; clear address decode type
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        mov     [es:BOOT_IDE_BASE_ADDR], cx
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.no_BAR4:
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        pop     cx
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;--------------------------------------
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.found:
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469 
; get Interrupt Line
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        mov     ax, 0xB10A
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        mov     di, 0x3c        ; memory base is config register at 0x3c
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472 
        push    cx
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473 
        int     0x1A
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474 
        jc      .no_Interrupt        ;.nopci
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475 
 
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        mov     [es:BOOT_IDE_INTERR_16], cx
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477 
.no_Interrupt:
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        pop     cx
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;--------------------------------------
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480 
; get memory base BAR0
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        mov     ax, 0xB10A
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        mov     di, 0x10        ; memory base is config register at 0x10
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        push    cx
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        int     0x1A
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        jc      .no_BAR0        ;.nopci
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486 
 
 - 
 
487 
        mov     [es:BOOT_IDE_BAR0_16], cx
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.no_BAR0:
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        pop     cx
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490 
;--------------------------------------
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491 
; get memory base BAR1
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492 
        mov     ax, 0xB10A
 - 
 
493 
        mov     di, 0x14        ; memory base is config register at 0x14
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494 
        push    cx
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        int     0x1A
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        jc      .no_BAR1        ;.nopci
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497 
 
 - 
 
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        mov     [es:BOOT_IDE_BAR1_16], cx
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.no_BAR1:
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        pop     cx
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501 
;--------------------------------------
 - 
 
502 
; get memory base BAR2
 - 
 
503 
        mov     ax, 0xB10A
 - 
 
504 
        mov     di, 0x18        ; memory base is config register at 0x18
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505 
        push    cx
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506 
        int     0x1A
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507 
        jc      .no_BAR2        ;.nopci
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508 
 
 - 
 
509 
        mov     [es:BOOT_IDE_BAR2_16], cx
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510 
.no_BAR2:
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        pop     cx
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512 
;--------------------------------------
 - 
 
513 
; get memory base BAR3
 - 
 
514 
        mov     ax, 0xB10A
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515 
        mov     di, 0x1C        ; memory base is config register at 0x1c
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516 
        push    cx
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517 
        int     0x1A
 - 
 
518 
        jc      .no_BAR3        ;.nopci
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519 
 
 - 
 
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        mov     [es:BOOT_IDE_BAR3_16], cx
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.no_BAR3:
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        pop     cx
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;--------------------------------------
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.nopci:
 - 
 
Line 525... Line 403...
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; \end{Mario79}
 403 
        pop     es
526 
 
 404 
 
527 
        mov     al, 0xf6        ; Сброс клавиатуры, разрешить сканирование
 405 
        mov     al, 0xf6        ; Сброс клавиатуры, разрешить сканирование
528 
        out     0x60, al
 406 
        out     0x60, al