Rev 7129 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 7129 | dunkaist | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2 | ;; ;; |
||
| 3 | ;; 16 BIT ENTRY FROM BOOTSECTOR ;; |
||
| 4 | ;; ;; |
||
| 5 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
| 6 | |||
| 7 | include 'macros.inc' |
||
| 8 | include 'struct.inc' |
||
| 7140 | clevermous | 9 | include 'lang.inc' |
| 7129 | dunkaist | 10 | include 'encoding.inc' |
| 11 | include 'const.inc' |
||
| 12 | |||
| 13 | os_code = code_l - tmp_gdt |
||
| 14 | |||
| 15 | use16 |
||
| 16 | org 0x0 |
||
| 17 | jmp start_of_code |
||
| 18 | |||
| 19 | if lang eq sp |
||
| 20 | include "kernelsp.inc" ; spanish kernel messages |
||
| 21 | else if lang eq et |
||
| 22 | version db 'Kolibri OS versioon 0.7.7.0+ ',13,10,13,10,0 |
||
| 23 | else |
||
| 24 | version db 'Kolibri OS version 0.7.7.0+ ',13,10,13,10,0 |
||
| 25 | end if |
||
| 26 | |||
| 27 | include "boot/bootstr.inc" ; language-independent boot messages |
||
| 28 | include "boot/preboot.inc" |
||
| 29 | |||
| 30 | if lang eq ge |
||
| 31 | include "boot/bootge.inc" ; german system boot messages |
||
| 32 | else if lang eq sp |
||
| 33 | include "boot/bootsp.inc" ; spanish system boot messages |
||
| 34 | else if lang eq ru |
||
| 35 | include "boot/bootru.inc" ; russian system boot messages |
||
| 36 | include "boot/ru.inc" ; Russian font |
||
| 37 | else if lang eq et |
||
| 38 | include "boot/bootet.inc" ; estonian system boot messages |
||
| 39 | include "boot/et.inc" ; Estonian font |
||
| 40 | else |
||
| 41 | include "boot/booten.inc" ; english system boot messages |
||
| 42 | end if |
||
| 43 | |||
| 44 | include "boot/bootcode.inc" ; 16 bit system boot code |
||
| 45 | include "bus/pci/pci16.inc" |
||
| 46 | include "detect/biosdisk.inc" |
||
| 47 | |||
| 48 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
| 49 | ;; ;; |
||
| 50 | ;; SWITCH TO 32 BIT PROTECTED MODE ;; |
||
| 51 | ;; ;; |
||
| 52 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
| 53 | |||
| 54 | |||
| 55 | ; CR0 Flags - Protected mode and Paging |
||
| 56 | |||
| 57 | mov ecx, CR0_PE+CR0_AM |
||
| 58 | |||
| 59 | ; Enabling 32 bit protected mode |
||
| 60 | |||
| 61 | sidt [cs:old_ints_h] |
||
| 62 | |||
| 63 | cli ; disable all irqs |
||
| 64 | cld |
||
| 65 | mov al, 255 ; mask all irqs |
||
| 66 | out 0xa1, al |
||
| 67 | out 0x21, al |
||
| 68 | l.5: |
||
| 69 | in al, 0x64 ; Enable A20 |
||
| 70 | test al, 2 |
||
| 71 | jnz l.5 |
||
| 72 | mov al, 0xD1 |
||
| 73 | out 0x64, al |
||
| 74 | l.6: |
||
| 75 | in al, 0x64 |
||
| 76 | test al, 2 |
||
| 77 | jnz l.6 |
||
| 78 | mov al, 0xDF |
||
| 79 | out 0x60, al |
||
| 80 | l.7: |
||
| 81 | in al, 0x64 |
||
| 82 | test al, 2 |
||
| 83 | jnz l.7 |
||
| 84 | mov al, 0xFF |
||
| 85 | out 0x64, al |
||
| 86 | |||
| 87 | lgdt [cs:tmp_gdt] ; Load GDT |
||
| 88 | mov eax, cr0 ; protected mode |
||
| 89 | or eax, ecx |
||
| 90 | and eax, 10011111b *65536*256 + 0xffffff ; caching enabled |
||
| 91 | mov cr0, eax |
||
| 92 | jmp pword os_code:B32 ; jmp to enable 32 bit mode |
||
| 93 | |||
| 94 | align 8 |
||
| 95 | tmp_gdt: |
||
| 96 | |||
| 97 | dw 23 |
||
| 98 | dd tmp_gdt+0x10000 |
||
| 99 | dw 0 |
||
| 100 | code_l: |
||
| 101 | dw 0xffff |
||
| 102 | dw 0x0000 |
||
| 103 | db 0x00 |
||
| 104 | dw 11011111b *256 +10011010b |
||
| 105 | db 0x00 |
||
| 106 | |||
| 107 | dw 0xffff |
||
| 108 | dw 0x0000 |
||
| 109 | db 0x00 |
||
| 110 | dw 11011111b *256 +10010010b |
||
| 111 | db 0x00 |
||
| 112 | |||
| 113 | include "data16.inc" |
||
| 114 | |||
| 115 | if ~ lang eq sp |
||
| 116 | diff16 "end of bootcode",0,$+0x10000 |
||
| 117 | end if |
||
| 118 | |||
| 119 | use32 |
||
| 120 | org $+0x10000 |
||
| 121 | |||
| 122 | align 4 |
||
| 123 | B32: |