401,129 → 401,7 |
|
push 0 |
pop es |
xor ax, ax |
and word [es:BOOT_IDE_BASE_ADDR], ax ;0 |
and word [es:BOOT_IDE_BAR0_16], ax ;0 |
and word [es:BOOT_IDE_BAR1_16], ax ;0 |
and word [es:BOOT_IDE_BAR2_16], ax ;0 |
and word [es:BOOT_IDE_BAR3_16], ax ;0 |
; \begin{Mario79} |
; find HDD IDE DMA PCI device |
; check for PCI BIOS |
mov ax, 0xB101 |
int 0x1A |
jc .nopci |
cmp edx, 'PCI ' |
jnz .nopci |
; find PCI class code |
; class 1 = mass storage |
; subclass 1 = IDE controller |
; a) class 1, subclass 1, programming interface 0x80 |
; This is a Parallel IDE Controller which uses IRQs 14 and 15. |
mov ax, 0xB103 |
mov ecx, 1*10000h + 1*100h + 0x80 |
mov [es:BOOT_IDE_PI_16], cx |
xor si, si ; device index = 0 |
int 0x1A |
jnc .found_1 ; Parallel IDE Controller |
; b) class 1, subclass 1, programming interface 0x8f |
mov ax, 0xB103 |
mov ecx, 1*10000h + 1*100h + 0x8f |
mov [es:BOOT_IDE_PI_16], cx |
xor si, si ; device index = 0 |
int 0x1A |
jnc .found_1 |
; c) class 1, subclass 1, programming interface 0x85 |
mov ax, 0xB103 |
mov ecx, 1*10000h + 1*100h + 0x85 |
mov [es:BOOT_IDE_PI_16], cx |
xor si, si ; device index = 0 |
int 0x1A |
jnc .found_1 |
; d) class 1, subclass 1, programming interface 0x8A |
; This is a Parallel IDE Controller which uses IRQs 14 and 15. |
mov ax, 0xB103 |
mov ecx, 1*10000h + 1*100h + 0x8A |
mov [es:BOOT_IDE_PI_16], cx |
xor si, si ; device index = 0 |
int 0x1A |
jnc .found_1 ; Parallel IDE Controller |
; Controller not found! |
xor ax, ax |
mov [es:BOOT_IDE_PI_16], ax |
jmp .nopci |
;-------------------------------------- |
.found_1: |
; get memory base BAR4 |
mov ax, 0xB10A |
mov di, 0x20 ; memory base is config register at 0x20 |
push cx |
int 0x1A |
jc .no_BAR4 ;.nopci |
and cx, 0xFFFC ; clear address decode type |
mov [es:BOOT_IDE_BASE_ADDR], cx |
.no_BAR4: |
pop cx |
;-------------------------------------- |
.found: |
; get Interrupt Line |
mov ax, 0xB10A |
mov di, 0x3c ; memory base is config register at 0x3c |
push cx |
int 0x1A |
jc .no_Interrupt ;.nopci |
|
mov [es:BOOT_IDE_INTERR_16], cx |
.no_Interrupt: |
pop cx |
;-------------------------------------- |
; get memory base BAR0 |
mov ax, 0xB10A |
mov di, 0x10 ; memory base is config register at 0x10 |
push cx |
int 0x1A |
jc .no_BAR0 ;.nopci |
|
mov [es:BOOT_IDE_BAR0_16], cx |
.no_BAR0: |
pop cx |
;-------------------------------------- |
; get memory base BAR1 |
mov ax, 0xB10A |
mov di, 0x14 ; memory base is config register at 0x14 |
push cx |
int 0x1A |
jc .no_BAR1 ;.nopci |
|
mov [es:BOOT_IDE_BAR1_16], cx |
.no_BAR1: |
pop cx |
;-------------------------------------- |
; get memory base BAR2 |
mov ax, 0xB10A |
mov di, 0x18 ; memory base is config register at 0x18 |
push cx |
int 0x1A |
jc .no_BAR2 ;.nopci |
|
mov [es:BOOT_IDE_BAR2_16], cx |
.no_BAR2: |
pop cx |
;-------------------------------------- |
; get memory base BAR3 |
mov ax, 0xB10A |
mov di, 0x1C ; memory base is config register at 0x1c |
push cx |
int 0x1A |
jc .no_BAR3 ;.nopci |
|
mov [es:BOOT_IDE_BAR3_16], cx |
.no_BAR3: |
pop cx |
;-------------------------------------- |
.nopci: |
; \end{Mario79} |
|
mov al, 0xf6 ; Сброс клавиатуры, разрешить сканирование |
out 0x60, al |
xor cx, cx |