| 1,5 → 1,5 |
|---|
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # Copyright (C) 2001-2004 Ondrej Palkovsky |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| 26,7 → 26,11 |
|---|
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| #define __ASM__ |
| |
| #include <arch/mm/page.h> |
| #include <arch/mm/ptl.h> |
| #include <arch/pm.h> |
| |
| #define START_STACK 0x7c00 |
| #define START_STACK_64 $0xffffffff80007c00 |
| 51,11 → 55,11 |
|---|
| |
| # call memmap_arch_init |
| |
| mov $0x80000000, %eax |
| movl $0x80000000, %eax |
| cpuid |
| cmp $0x80000000, %eax # any function > 80000000h? |
| jbe no_long_mode |
| mov $0x80000001, %eax # Extended function code 80000001 |
| movl $0x80000001, %eax # Extended function code 80000001 |
| cpuid |
| bt $29, %edx # Test if long mode is supported. |
| jnc no_long_mode |
| 68,7 → 72,7 |
|---|
| orl $0x1,%eax |
| movl %eax,%cr0 # switch to protected mode |
| |
| jmpl $40, $now_in_prot |
| jmpl $selector(KTEXT32_DES), $now_in_prot |
| |
| no_long_mode: |
| 1: |
| 78,7 → 82,7 |
|---|
| # the Default operand size must not be 1 when entering long mode |
| now_in_prot: |
| # Set up stack & data descriptors |
| movw $16, %ax |
| movw $selector(KDATA_DES), %ax |
| movw %ax, %ds |
| movw %ax, %fs |
| movw %ax, %gs |
| 106,7 → 110,7 |
|---|
| movl %eax, %cr0 |
| |
| # At this point we are in compatibility mode |
| jmpl $8, $start64 |
| jmpl $selector(KTEXT_DES), $start64 |
| |
| .code64 |
| start64: |
| 149,10 → 153,10 |
|---|
| |
| .global gdtr_inst |
| gdtr_inst: |
| .word 7*8 # GDT_ITEMS * 8 |
| .long gdt + 0x80000000 |
| .word selector(GDT_ITEMS) |
| .long KA2PA(gdt) |
| |
| .global idtr_inst |
| idtr_inst: |
| .word 0 |
| .long idt + 0x80000000 |
| .long KA2PA(idt) |