[BITS 32]
global _start
extern start_kernel

CODE_SEG equ 0x08
DATA_SEG equ 0x10

; No access to BIOS from now on....
_start:
	; Set all segments to the same as the DATA_SEG
	mov ax, DATA_SEG
	mov ds, ax
	mov es, ax
	mov fs, ax
	mov gs, ax
	mov ss, ax

	; Set the stack pointer and base pointer further in mem
	mov ebp, 0x00200000
	mov esp, ebp

	; Enable A20 line
	in al, 0x92
	or al, 2
	out 0x92, al


	; Remap master PIC
	mov al, 00010001b
	out 0x20, al	; MasterPIC

	mov al, 0x20	; Start master ISR at 0x20
	out 0x21, al

	mov al, 00000001b	; Put the PIC in x86 mode
	out 0x21, al

	sti

	; Jump to C code
	call start_kernel
	jmp $

; Hack to align the source code at 16bytes (because 512 is a multiple of 16)
times 512 - ($ - $$) db 0