| /kernel/trunk/boot/rdload.inc |
|---|
| 0,0 → 1,95 |
| ; READ RAMDISK IMAGE FROM HD |
| cmp [boot_dev],1 |
| jne no_sys_on_hd |
| test [0x40001],byte 0x40 |
| jz position_2 |
| mov [hdbase],0x1f0 |
| mov [hdid],0x0 |
| mov [hdpos],1 |
| mov [fat32part],0 |
| position_1_1: |
| inc [fat32part] |
| call search_and_read_image |
| cmp [image_retrieved],1 |
| je yes_sys_on_hd |
| movzx eax,byte [0x40002] |
| cmp [fat32part],eax |
| jle position_1_1 |
| position_2: |
| test [0x40001],byte 0x10 |
| jz position_3 |
| mov [hdbase],0x1f0 |
| mov [hdid],0x10 |
| mov [hdpos],2 |
| mov [fat32part],0 |
| position_2_1: |
| inc [fat32part] |
| call search_and_read_image |
| cmp [image_retrieved],1 |
| je yes_sys_on_hd |
| movzx eax,byte [0x40003] |
| cmp eax,[fat32part] |
| jle position_2_1 |
| position_3: |
| test [0x40001],byte 0x4 |
| jz position_4 |
| mov [hdbase],0x170 |
| mov [hdid],0x0 |
| mov [hdpos],3 |
| mov [fat32part],0 |
| position_3_1: |
| inc [fat32part] |
| call search_and_read_image |
| cmp [image_retrieved],1 |
| je yes_sys_on_hd |
| movzx eax,byte [0x40004] |
| cmp eax,[fat32part] |
| jle position_3_1 |
| position_4: |
| test [0x40001],byte 0x1 |
| jz no_sys_on_hd |
| mov [hdbase],0x170 |
| mov [hdid],0x10 |
| mov [hdpos],4 |
| mov [fat32part],0 |
| position_4_1: |
| inc [fat32part] |
| call search_and_read_image |
| cmp [image_retrieved],1 |
| je yes_sys_on_hd |
| movzx eax,byte [0x40005] |
| cmp eax,[fat32part] |
| jle position_4_1 |
| jmp yes_sys_on_hd |
| search_and_read_image: |
| ; mov [0xfe10],dword 0 ; entries in hd cache |
| call set_FAT32_variables |
| mov edx, bootpath |
| call read_image |
| test eax, eax |
| jz image_present |
| mov edx, bootpath2 |
| call read_image |
| test eax, eax |
| jz image_present |
| ret |
| image_present: |
| mov [image_retrieved],1 |
| ret |
| read_image: |
| mov eax, hdsysimage |
| mov ebx, 1474560/512 |
| mov ecx, 0x100000 |
| mov esi, 0 |
| mov edi, 12 |
| call file_read |
| ret |
| image_retrieved db 0 |
| counter_of_partitions db 0 |
| no_sys_on_hd: |
| yes_sys_on_hd: |