; boot.asm
; Author: Josh Holtrop
; Date: 2009-06-25
; Adapted from HOS 0.16 source

%define CONSOLE_MEMORY              0xB8000

; Symbols from C
extern k_bootstrap, bootstrap_stack

;**************************************************************************
;* This is the entry point for the kernel.                                *
;**************************************************************************
[global start]
start:
    mov     cx, 0x0700 + 'a'
    mov     [CONSOLE_MEMORY+160*8+0*2], cx

    mov     esp, bootstrap_stack+4096       ; set up temporary stack space

    push    eax                             ; multiboot bootloader magic value
    push    ebx                             ; pointer to multiboot info struct
    call    k_bootstrap