kolibrios/kernel/branches/Kolibri-A/trunk/bootloader/bios-bev/bev.asm

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include 'cfg_bios.inc'
use16
;org 0
rom_header:
; PnP Option ROM header
rom_signature dw 0xAA55 ; +0 : magic
rom_length db BIOS_BOOT_BLOCK_SIZE ; +2 : number of 512byte blocks
rom_entry:
jmp init_entry ; +3 : initialization entry point
db 'AZ'
rom_reserved rb 0x11 ; +7 : reserved (17 bytes)
rom_pci_struc dw pci_header ; +18h : offset to PCI data structure
rom_expansion dw pnp_header ; +1Ah : offset to expansion header structure
align 16
pnp_header:
; PnP Expansion Header
pnp_signature db '$PnP' ; +0 : magic
pnp_revision db 1 ; +4 : revision
pnp_length db 2 ; +5 : length (in 16byte paragraphs)
pnp_next dw 0 ; +6 : offset of the next header (0 if none)
pnp_reserv1 db 0 ; +8
pnp_checksum db 0 ; +9 : checksum
pnp_devid dd 0x0 ; +A : device identifier
pnp_manstr dw manstr ; +E : pointer to manufacturer string
pnp_prodstr dw prodstr ; +10 : pointer to product name string
pnp_devtype1 db 2 ; +12 : device type code
pnp_devtype2 dw 0x000
pnp_devind db 0x14 ; +15 : device indicators
pnp_bcv dw 0 ; +16 : boot connection vector (must be 0)
pnp_discv dw 0 ; +18 : disconnect vector
pnp_bev dw boot_entry ; +1A : boot entry vector
pnp_reserv2 dw 0 ; +1C
pnp_info dw 0 ; +1E : static resource information vector
align 16
pci_header:
; PCI Data Structure
pci_magic db 'PCIR' ; +0 : magic
pci_vendor dw BIOS_PCI_VENDOR ; +4 :
pci_device dw BIOS_PCI_DEVICE ; +6 : sb700 PCI bridge
pci_vdata dw 0 ; +8 : vital product data offset
pci_length dw 0x18 ; +A : PCI data structure length
pci_classrev dd BIOS_PCI_CLASS ; +C : rev.00 + class 04.00.00
pci_size dw BIOS_BOOT_BLOCK_SIZE ; +10 : image length (512byte blocks)
pci_rev dw 0 ; +12
pci_codetype db 0 ; +14 : x86
pci_indicator db 0x80 ; +15 : last image
pci_reserved dw 0
align 4
manstr:
db 'Kolibri-A Operation System',0
prodstr:
db 'ver.ROM-0.1',0
align 4
boot_entry:
@@:
boot_failure:
int 18h ; return to BIOS Boot sequence
align 4
init_entry:
xor ax, ax
mov [cs:rom_length], al
mov al, 0x20
retf
check = 0
repeat $-$$
load a byte from $$+%-1
check = a + check
end repeat
check_byte db 0x100 - (check mod 256)
times (512-$) db 0