VESA support

[nyax.git] / boot.asm

diff --git a/boot.asm b/boot.asm
deleted file mode 100644 (file)
index 415449e..0000000
--- a/boot.asm
+++ /dev/null
@@ -1,140 +0,0 @@
-[org 0x7C00]
-
-%define PAGETABLE 0x1000
-%define KERNEL 0xD000
-%define STACK 0x7E00
-
-boot:
-       xor ax, ax
-       mov ds, ax
-       mov es, ax
-       mov fs, ax
-       mov gs, ax
-       mov ss, ax
-
-       mov bp, STACK
-       mov sp, bp
-
-       mov ax, booting_msg
-       call print_str
-
-       mov bx, KERNEL
-       mov cl, 2
-       mov al, (MAIN_SIZE + 511) / 512
-       call load_disk
-
-       mov di, PAGETABLE+0x0000
-.clr_buf:
-       mov byte[di], 0
-       inc di
-       cmp di, PAGETABLE+0x4000
-       jne .clr_buf
-
-       mov dword[PAGETABLE+0x0000], PAGETABLE+0x1003
-       mov dword[PAGETABLE+0x1000], PAGETABLE+0x2003
-       mov dword[PAGETABLE+0x2000], PAGETABLE+0x3003
-
-       mov eax, 3
-       mov di, PAGETABLE+0x3000
-.build_pt:
-       mov [di], eax
-       add eax, 0x1000
-       add di, 8
-       cmp eax, 0x100000
-       jb .build_pt
-
-       mov di, PAGETABLE
-
-       mov al, 0xFF
-       out 0xA1, al
-       out 0x21, al
-
-       nop
-       nop
-
-       lidt [IDT]
-
-       mov eax, 0b10100000
-       mov cr4, eax
-
-       mov edx, edi
-       mov cr3, edx
-
-       mov ecx, 0xC0000080
-       rdmsr
-
-       or eax, 0x00000100
-       wrmsr
-
-       mov ebx, cr0
-       or ebx, 0x80000001
-       mov cr0, ebx
-
-       lgdt [GDT.pointer]
-
-       jmp 0x0008:long_mode
-
-load_disk:
-       push ax
-       mov ah, 0x02
-       xor ch, ch
-       xor dh, dh
-       int 0x13
-       jc disk_error
-       pop cx
-       cmp al, cl
-       jne disk_error
-       ret
-
-disk_error:
-       mov ax, disk_error_msg
-       call print_str
-       jmp $
-
-print_str:
-       push ax
-       push bx
-       mov bx, ax
-       mov ah, 0x0E
-.print:
-       mov al, [bx]
-       cmp al, 0
-       je .return
-       int 0x10
-       inc bx
-       jmp .print
-.return:
-       pop bx
-       pop ax
-       ret
-
-booting_msg: db 10, 13, "Loading NyaX...", 10, 10, 13, 0
-disk_error_msg: db "Disk is bwoken, cant boot ;-;", 10, 13, 0
-
-GDT:
-       dq 0
-       dq 0x00209A0000000000
-       dq 0x0000920000000000
-       dw 0
-.pointer:
-       dw $ - GDT - 1
-       dd GDT
-
-IDT:
-       dw 0
-       dd 0
-
-[bits 64]
-
-long_mode:
-       mov ax, 0x0010
-       mov ds, ax
-       mov es, ax
-       mov fs, ax
-       mov gs, ax
-       mov ss, ax
-
-       jmp KERNEL
-
-times 510-($-$$) db 0
-dw 0xAA55