Revision 75b9f690
| b/pc-bios/optionrom/linuxboot.S | ||
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#include "optionrom.h" |
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#define BOOT_ROM_PRODUCT "Linux loader" |
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BOOT_ROM_START |
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run_linuxboot: |
| b/pc-bios/optionrom/multiboot.S | ||
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#include "optionrom.h" |
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#define BOOT_ROM_PRODUCT "multiboot loader" |
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#define MULTIBOOT_MAGIC 0x2badb002 |
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#define GS_PROT_JUMP 0 |
| b/pc-bios/optionrom/optionrom.h | ||
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#define BOOT_ROM_START \ |
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OPTION_ROM_START \ |
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push %eax; \ |
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push %ds; \ |
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\ |
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/* setup ds so we can access the IVT */ \ |
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xor %ax, %ax; \ |
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mov %ax, %ds; \ |
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\ |
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/* install our int 19 handler */ \ |
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movw $int19_handler, (0x19*4); \ |
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mov %cs, (0x19*4+2); \ |
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\ |
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pop %ds; \ |
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pop %eax; \ |
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lret; \ |
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\ |
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int19_handler:; \ |
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.org 0x18; \ |
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.short 0; \ |
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.short _pnph; \ |
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_pnph: \ |
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.ascii "$PnP"; \ |
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.byte 0x01; \ |
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.byte ( _pnph_len / 16 ); \ |
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.short 0x0000; \ |
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.byte 0x00; \ |
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.byte 0x00; \ |
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.long 0x00000000; \ |
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.short _manufacturer; \ |
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.short _product; \ |
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.long 0x00000000; \ |
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.short 0x0000; \ |
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.short 0x0000; \ |
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.short _bev; \ |
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.short 0x0000; \ |
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.short 0x0000; \ |
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.equ _pnph_len, . - _pnph; \ |
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_bev:; \ |
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/* DS = CS */ \ |
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movw %cs, %ax; \ |
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movw %ax, %ds; |
| ... | ... | |
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_end: |
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#define BOOT_ROM_END \ |
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_manufacturer:; \ |
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.asciz "QEMU"; \ |
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_product:; \ |
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.asciz BOOT_ROM_PRODUCT; \ |
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OPTION_ROM_END |
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