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x32 still not working (TODO: do 1:1 page mapping, except for kernel)

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Alex
2022-10-18 21:16:12 +03:00
parent 348aa69dcb
commit cb349ae620
15 changed files with 480 additions and 94 deletions
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16
Architecture/i686/boot.asm
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@ -18,19 +18,29 @@ KERNEL_VIRTUAL_BASE equ 0xC0000000 ; 3GB
KERNEL_PAGE_NUMBER equ (KERNEL_VIRTUAL_BASE >> 22) ; 768
KERNEL_STACK_SIZE equ 0x4000 ; 16KB
extern x32Entry
extern x32Multiboot2Entry
global _start
section .data
align 0x1000
BootPageTable:
dd 0x00000083
times (KERNEL_PAGE_NUMBER - 1) dd 0
times ((KERNEL_PAGE_NUMBER) - 1) dd 0
dd 0x00000083
times (1024 - KERNEL_PAGE_NUMBER - 1) dd 0
section .text
_start:
mov word [0xb8000], 0x074C ; L
mov word [0xb8002], 0x076F ; o
mov word [0xb8004], 0x0761 ; a
mov word [0xb8006], 0x0764 ; d
mov word [0xb8008], 0x0769 ; i
mov word [0xb800a], 0x076E ; n
mov word [0xb800c], 0x0767 ; g
mov word [0xb800e], 0x072E ; .
mov word [0xb8010], 0x072E ; .
mov word [0xb8012], 0x072E ; .
mov ecx, (BootPageTable - KERNEL_VIRTUAL_BASE)
mov cr3, ecx
mov ecx, cr4
@ -48,7 +58,7 @@ HigherHalfStart:
push eax ; Multiboot2 Magic
add ebx, KERNEL_VIRTUAL_BASE
push ebx ; Multiboot2 Header
call x32Entry
call x32Multiboot2Entry
Loop:
hlt
jmp Loop