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Rev 3555 Rev 3725
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;;  KolibriOS 16-bit loader,                                    ;;
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;;  KolibriOS 16-bit loader,                                    ;;
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;;                        based on bootcode for MenuetOS        ;;
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;;                        based on bootcode for MenuetOS        ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 3555 $
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$Revision: 3725 $
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; set up esp
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; set up esp
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        movzx   esp, sp
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        movzx   esp, sp
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        push    0
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        push    0
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        pop     es
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        pop     es
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        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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        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_BASE_ADDR], 0
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        and     word [es:BOOT_IDE_BAR3_16], ax  ;0
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; \begin{Mario79}
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; \begin{Mario79}
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; find HDD IDE DMA PCI device
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; find HDD IDE DMA PCI device
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; check for PCI BIOS
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; check for PCI BIOS
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        mov     ax, 0xB101
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        mov     ax, 0xB101
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        jnz     .nopci
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        jnz     .nopci
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; find PCI class code
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; find PCI class code
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; class 1 = mass storage
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; class 1 = mass storage
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; subclass 1 = IDE controller
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; subclass 1 = IDE controller
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; a) class 1, subclass 1, programming interface 0x80
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; 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     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x80
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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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        xor     si, si  ; device index = 0
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        int     0x1A
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        int     0x1A
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        jnc     .found
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        jnc     .found_1 ; Parallel IDE Controller
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; b) class 1, subclass 1, programming interface 0x8A
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; b) class 1, subclass 1, programming interface 0x8f
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        mov     ax, 0xB103
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x8A
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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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        xor     si, si  ; device index = 0
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        int     0x1A
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        int     0x1A
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        jnc     .found
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        jnc     .found
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; c) class 1, subclass 1, programming interface 0x85
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; c) class 1, subclass 1, programming interface 0x85
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        mov     ax, 0xB103
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        mov     ax, 0xB103
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        mov     ecx, 1*10000h + 1*100h + 0x85
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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
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        xor     si, si  ; device index = 0
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        int     0x1A
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        int     0x1A
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        jnc     .found
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; d) class 1, subclass 1, programming interface 0x8A
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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 + 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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        jc      .nopci
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        jmp     .nopci
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.found:
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.found_1:
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; get memory base
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; get memory base BAR4
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        mov     ax, 0xB10A
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        mov     ax, 0xB10A
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        mov     di, 0x20        ; memory base is config register at 0x20
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        mov     di, 0x20        ; memory base is config register at 0x20
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        push    cx
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        int     0x1A
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        int     0x1A
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        jc      .nopci
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        jc      .no_BAR4        ;.nopci
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        and     cx, 0xFFF0      ; clear address decode type
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        and     cx, 0xFFF0      ; clear address decode type
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        mov     [es:BOOT_IDE_BASE_ADDR], cx
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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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.found:
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; 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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        mov     [es:BOOT_IDE_BAR0_16], cx
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.no_BAR0:
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        pop     cx
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; get memory base BAR1
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        mov     ax, 0xB10A
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        mov     di, 0x14        ; memory base is config register at 0x14
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        push    cx
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        int     0x1A
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        jc      .no_BAR1        ;.nopci
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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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; get memory base BAR2
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        mov     ax, 0xB10A
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        mov     di, 0x18        ; memory base is config register at 0x18
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        push    cx
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        int     0x1A
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        jc      .no_BAR2        ;.nopci
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        mov     [es:BOOT_IDE_BAR2_16], cx
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.no_BAR2:
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        pop     cx
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; get memory base BAR3
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        mov     ax, 0xB10A
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        mov     di, 0x1C        ; memory base is config register at 0x1c
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        push    cx
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        int     0x1A
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        jc      .no_BAR3        ;.nopci
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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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.nopci:
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.nopci:
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; \end{Mario79}
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; \end{Mario79}
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        mov     al, 0xf6        ; Сброс клавиатуры, разрешить сканирование
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        mov     al, 0xf6        ; Сброс клавиатуры, разрешить сканирование
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end if
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end if
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.preboot_device_inited:
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.preboot_device_inited:
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; following 4 lines set variables to 1 if its current value is 0
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; following 4 lines set variables to 1 if its current value is 0
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        cmp     byte [di+preboot_dma-preboot_device], 1
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        cmp     byte [di+preboot_dma-preboot_device], 1
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        adc     byte [di+preboot_dma-preboot_device], 0
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        adc     byte [di+preboot_dma-preboot_device], 0
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        cmp     byte [di+preboot_biosdisk-preboot_device], 1
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;        cmp     byte [di+preboot_biosdisk-preboot_device], 1
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        adc     byte [di+preboot_biosdisk-preboot_device], 0
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;        adc     byte [di+preboot_biosdisk-preboot_device], 0
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;; default value for VRR is OFF
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;; default value for VRR is OFF
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;        cmp     byte [di+preboot_vrrm-preboot_device], 0
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;        cmp     byte [di+preboot_vrrm-preboot_device], 0
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;        jnz	@f
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;        jnz	@f
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;        mov	byte [di+preboot_vrrm-preboot_device], 2
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;        mov	byte [di+preboot_vrrm-preboot_device], 2
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;@@:
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;@@: