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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6442 | 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 1 ; +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 | ; retf ; +5 |
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| 12 | @@: |
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| 13 | times (24-$) db 0 ; : left blank |
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| 14 | rom_pci_struc dw pci_header ; +18h : offset to PCI data structure |
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| 15 | |||
| 16 | times (32-$) db 0 |
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| 17 | |||
| 18 | ; +32 |
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| 19 | pci_header: |
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| 20 | ; PCI Data Structure |
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| 21 | pci_magic db 'PCIR' ; +0 : magic |
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| 22 | pci_vendor dw BIOS_PCI_VENDOR ; +4 : 10EE |
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| 23 | pci_device dw BIOS_PCI_DEVICE ; +6 : 0007 |
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| 24 | pci_vdata dw 0 ; +8 : 0 = no vital product data |
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| 25 | pci_length dw 0x18 ; +A : PCI data structure length |
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| 26 | pci_classrev dd BIOS_PCI_CLASS ; +C : rev.00 + class 05.00.00 |
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| 27 | pci_size dw 1 ; +10 : image length (512byte blocks) |
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| 28 | pci_rev dw 0 ; +12 |
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| 29 | pci_codetype db 0 ; +14 : x86 |
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| 30 | pci_indicator db 0x80 ; +15 : last image |
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| 31 | pci_maxlen dw 1 ; +16 : max length (512b blocks) |
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| 32 | pci_hdrptr dw 0; manstr ; +18 : ExROM's config utility code header |
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| 33 | pci_dmtf_entry dw 0 ; +1A : DMTP CLP entry point |
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| 34 | |||
| 35 | times (64-$) db 0 |
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| 36 | |||
| 37 | manstr: |
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| 38 | db 1,'Kolibri-A Operating System',13,10,0 |
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| 39 | ; utility code header size = 42 bytes |
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| 40 | times (64+41-$) db 0 ; |
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| 41 | db 1 ; ver.1 |
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| 42 | |||
| 43 | utility_entry: |
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| 44 | jmp boot_failure |
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| 45 | times (128-$) db 0 |
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| 46 | |||
| 47 | ;align 128 |
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| 48 | |||
| 49 | boot_failure: |
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| 50 | int 18h ; return to BIOS Boot sequence |
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| 51 | |||
| 52 | align 4 |
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| 53 | init_entry: |
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| 54 | ; note x86 "unreal" mode! |
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| 55 | ; ax = b:d.f |
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| 56 | ; bx = run-time segment |
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| 57 | ; cx = PMM segment |
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| 58 | ; dx = PMM entry offset |
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| 59 | |||
| 60 | mov dx, 0x0cf8 ; PCI config address |
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| 61 | ; mov eax, 0x80010010 ; BAR0 |
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| 62 | and eax, 0x0FFFF |
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| 63 | shl eax, 8 |
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| 64 | or eax, 0x80000010 ;BAR0 |
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| 65 | out dx, eax |
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| 66 | out dx, eax |
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| 67 | add dl, 4 |
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| 68 | in eax, dx |
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| 69 | and eax, 0xFFFFFF00 |
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| 70 | add eax, 0x0400 ; LPC control reg |
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| 71 | mov dword[eax], 0x90050000 ; LED port |
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| 72 | mov dword[eax+4], 0x055 |
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| 73 | xor eax, eax |
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| 74 | sub dl, 4 |
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| 75 | out dx, eax |
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| 76 | mov bx, ax |
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| 77 | retf |
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| 78 | |||
| 79 | |||
| 80 | ; mov edx,[esp] ; get the origin |
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| 81 | ; and dl, 0xF0 |
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| 82 | ; shl ebx, 4 ; correct run-time address |
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| 83 | ; mov cx, 0 ; words counter |
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| 84 | ;@@: |
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| 85 | ; mov ax, word[edx+ecx] |
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| 86 | ; mov [ebx+ecx],ax |
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| 87 | ; inc cx |
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| 88 | ; inc cx |
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| 89 | ; test cx,0x200 |
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| 90 | ; jz @b |
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| 91 | ; xor ax, ax |
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| 92 | ; mov bx, ax |
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| 93 | ; mov al, 0x20 ; IPL device's attached |
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| 94 | |||
| 95 | ; retd ; double ! |
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| 96 | |||
| 97 | |||
| 98 | times (0xDF-$) db 0 ; checksum position |
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| 99 | |||
| 100 | sum = 0 |
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| 101 | repeat $-$$ |
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| 102 | load a byte from $$+% -1 |
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| 103 | sum = a + sum |
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| 104 | end repeat |
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| 105 | check = sum mod 256 |
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| 106 | check_byte db (0x100 - check ) mod 256 |
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| 107 | |||
| 108 | times (512-$) db 0 |