blob: 497a0a828fe2103f4fefe3f0c4f03e68d847b6a3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
; other processors will enter here!
[org 0x7000]
jmp switch_to_pm
%include "boot/GDT.asm"
[bits 16]
switch_to_pm:
cli ;switch off interrupts!
lgdt [gdt_descriptor] ;load descriptor table!
;switch on 32-bit protected mode
mov eax, cr0
or eax,0x1
mov cr0, eax
jmp 0x8:init_pm
[bits 32]
init_pm:
mov ax, 0x10
mov ds, ax
mov ss, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ebp, 0x95000
mov esp, ebp
call boot_32_pm ;continue booting in 32-bit protected mode
boot_32_pm:
mov eax,1
;
call 0x1000 ;jump into our Kernel!
|
