| /SPARTAN/trunk/arch/ia32/src/boot/boot.S |
|---|
| 52,6 → 52,7 |
| cli |
| xorw %ax, %ax |
| movw %ax, %ds |
| movw %ax, %es |
| movw %ax, %ss # initialize stack segment register |
| movl $BOOTSTRAP_OFFSET - 0x400, %esp # initialize stack pointer |
| 85,7 → 86,7 |
| movw %ax, %ds # kernel data + stack |
| movw %ax, %ss |
| movb $0xd1, %al # enable A20 using the keyboard controller |
| movb $0xd1, %al # enable A20 using i8042 controller |
| outb %al, $0x64 |
| movb $0xdf, %al |
| outb %al, $0x60 |
| /SPARTAN/trunk/arch/ia32/src/boot/memmap.S |
|---|
| 38,11 → 38,8 |
| .section K_TEXT_START_2 |
| memmap_arch_init: |
| e820begin: |
| xorl %ebx,%ebx # during first call, ebx must be 0 |
| movw %bx,%ds |
| movw %bx,%es |
| movw $e820table_boot,%di |
| movb $MEMMAP_E820_MAX_RECORDS,e820counter_boot |
| e820loop: |
| 66,8 → 63,8 |
| decb e820counter_boot # buffer is full |
| jz e820end |
| cmpl $0,%ebx |
| jne e820loop |
| testl %ebx,%ebx |
| jnz e820loop |
| e820end: |
| movb $MEMMAP_E820_MAX_RECORDS,%al |
| 110,7 → 107,9 |
| e801end: |
| ret |
| .section K_DATA_START |
| #memory size in 1 kb chunks |
| e801memorysize: |
| .long 0 |