| 0,0 → 1,108 |
|---|
| include 'cfg_bios.inc' |
| use16 |
| org 0 |
| |
| rom_header: |
| ; PnP Option ROM header |
| rom_signature dw 0xAA55 ; +0 : magic |
| rom_length db 1 ; +2 : number of 512byte blocks |
| rom_entry: |
| jmp init_entry ; +3 : initialization entry point |
| ; retf ; +5 |
| @@: |
| times (24-$) db 0 ; : left blank |
| rom_pci_struc dw pci_header ; +18h : offset to PCI data structure |
| |
| times (32-$) db 0 |
| |
| ; +32 |
| pci_header: |
| ; PCI Data Structure |
| pci_magic db 'PCIR' ; +0 : magic |
| pci_vendor dw BIOS_PCI_VENDOR ; +4 : 10EE |
| pci_device dw BIOS_PCI_DEVICE ; +6 : 0007 |
| pci_vdata dw 0 ; +8 : 0 = no vital product data |
| pci_length dw 0x18 ; +A : PCI data structure length |
| pci_classrev dd BIOS_PCI_CLASS ; +C : rev.00 + class 05.00.00 |
| pci_size dw 1 ; +10 : image length (512byte blocks) |
| pci_rev dw 0 ; +12 |
| pci_codetype db 0 ; +14 : x86 |
| pci_indicator db 0x80 ; +15 : last image |
| pci_maxlen dw 1 ; +16 : max length (512b blocks) |
| pci_hdrptr dw 0; manstr ; +18 : ExROM's config utility code header |
| pci_dmtf_entry dw 0 ; +1A : DMTP CLP entry point |
| |
| times (64-$) db 0 |
| |
| manstr: |
| db 1,'Kolibri-A Operating System',13,10,0 |
| ; utility code header size = 42 bytes |
| times (64+41-$) db 0 ; |
| db 1 ; ver.1 |
| |
| utility_entry: |
| jmp boot_failure |
| times (128-$) db 0 |
| |
| ;align 128 |
| |
| boot_failure: |
| int 18h ; return to BIOS Boot sequence |
| |
| align 4 |
| init_entry: |
| ; note x86 "unreal" mode! |
| ; ax = b:d.f |
| ; bx = run-time segment |
| ; cx = PMM segment |
| ; dx = PMM entry offset |
| |
| mov dx, 0x0cf8 ; PCI config address |
| ; mov eax, 0x80010010 ; BAR0 |
| and eax, 0x0FFFF |
| shl eax, 8 |
| or eax, 0x80000010 ;BAR0 |
| out dx, eax |
| out dx, eax |
| add dl, 4 |
| in eax, dx |
| and eax, 0xFFFFFF00 |
| add eax, 0x0400 ; LPC control reg |
| mov dword[eax], 0x90050000 ; LED port |
| mov dword[eax+4], 0x055 |
| xor eax, eax |
| sub dl, 4 |
| out dx, eax |
| mov bx, ax |
| retf |
| |
| |
| ; mov edx,[esp] ; get the origin |
| ; and dl, 0xF0 |
| ; shl ebx, 4 ; correct run-time address |
| ; mov cx, 0 ; words counter |
| ;@@: |
| ; mov ax, word[edx+ecx] |
| ; mov [ebx+ecx],ax |
| ; inc cx |
| ; inc cx |
| ; test cx,0x200 |
| ; jz @b |
| ; xor ax, ax |
| ; mov bx, ax |
| ; mov al, 0x20 ; IPL device's attached |
| |
| ; retd ; double ! |
| |
| |
| times (0xDF-$) db 0 ; checksum position |
| |
| sum = 0 |
| repeat $-$$ |
| load a byte from $$+% -1 |
| sum = a + sum |
| end repeat |
| check = sum mod 256 |
| check_byte db (0x100 - check ) mod 256 |
| |
| times (512-$) db 0 |