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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1952 | art_zh | 1 | include 'cfg_bios.inc' |
| 2 | use16 |
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| 3 | ;org 0 |
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| 4 | |||
| 5 | rom_header: |
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| 6 | ; PnP Option ROM header |
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| 7 | rom_signature dw 0xAA55 ; +0 : magic |
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| 8 | rom_length db BIOS_BOOT_BLOCK_SIZE ; +2 : number of 512byte blocks |
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| 9 | rom_entry: |
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| 10 | jmp init_entry ; +3 : initialization entry point |
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| 11 | db 'AZ' |
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| 12 | rom_reserved rb 0x11 ; +7 : reserved (17 bytes) |
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| 13 | rom_pci_struc dw pci_header ; +18h : offset to PCI data structure |
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| 14 | rom_expansion dw pnp_header ; +1Ah : offset to expansion header structure |
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| 15 | |||
| 16 | align 16 |
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| 17 | pnp_header: |
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| 18 | ; PnP Expansion Header |
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| 19 | pnp_signature db '$PnP' ; +0 : magic |
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| 20 | pnp_revision db 1 ; +4 : revision |
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| 21 | pnp_length db 2 ; +5 : length (in 16byte paragraphs) |
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| 22 | pnp_next dw 0 ; +6 : offset of the next header (0 if none) |
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| 23 | pnp_reserv1 db 0 ; +8 |
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| 24 | pnp_checksum db 0 ; +9 : checksum |
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| 25 | pnp_devid dd 0x0 ; +A : device identifier |
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| 26 | pnp_manstr dw manstr ; +E : pointer to manufacturer string |
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| 27 | pnp_prodstr dw prodstr ; +10 : pointer to product name string |
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| 28 | pnp_devtype1 db 2 ; +12 : device type code |
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| 29 | pnp_devtype2 dw 0x000 |
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| 30 | pnp_devind db 0x14 ; +15 : device indicators |
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| 31 | pnp_bcv dw 0 ; +16 : boot connection vector (must be 0) |
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| 32 | pnp_discv dw 0 ; +18 : disconnect vector |
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| 33 | pnp_bev dw boot_entry ; +1A : boot entry vector |
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| 34 | pnp_reserv2 dw 0 ; +1C |
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| 35 | pnp_info dw 0 ; +1E : static resource information vector |
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| 36 | |||
| 37 | align 16 |
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| 38 | pci_header: |
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| 39 | ; PCI Data Structure |
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| 40 | pci_magic db 'PCIR' ; +0 : magic |
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| 41 | pci_vendor dw BIOS_PCI_VENDOR ; +4 : |
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| 42 | pci_device dw BIOS_PCI_DEVICE ; +6 : sb700 PCI bridge |
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| 43 | pci_vdata dw 0 ; +8 : vital product data offset |
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| 44 | pci_length dw 0x18 ; +A : PCI data structure length |
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| 45 | pci_classrev dd BIOS_PCI_CLASS ; +C : rev.00 + class 04.00.00 |
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| 46 | pci_size dw BIOS_BOOT_BLOCK_SIZE ; +10 : image length (512byte blocks) |
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| 47 | pci_rev dw 0 ; +12 |
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| 48 | pci_codetype db 0 ; +14 : x86 |
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| 49 | pci_indicator db 0x80 ; +15 : last image |
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| 50 | pci_reserved dw 0 |
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| 51 | |||
| 52 | align 4 |
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| 53 | manstr: |
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| 54 | db 'Kolibri-A Operation System',0 |
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| 55 | prodstr: |
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| 56 | db 'ver.ROM-0.1',0 |
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| 57 | |||
| 58 | align 4 |
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| 59 | boot_entry: |
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| 60 | @@: |
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| 61 | |||
| 62 | |||
| 63 | boot_failure: |
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| 64 | int 18h ; return to BIOS Boot sequence |
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| 65 | |||
| 66 | align 4 |
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| 67 | init_entry: |
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| 68 | xor ax, ax |
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| 69 | mov [cs:rom_length], al |
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| 70 | mov al, 0x20 |
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| 71 | retf |
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| 72 | |||
| 73 | |||
| 74 | check = 0 |
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| 75 | repeat $-$$ |
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| 76 | load a byte from $$+%-1 |
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| 77 | check = a + check |
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| 78 | end repeat |
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| 79 | |||
| 80 | check_byte db 0x100 - (check mod 256) |
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| 81 | |||
| 82 | times (512-$) db 0 |