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/*
* Raw binary prefix
*
* Assumes that entire image is already loaded as a contiguous block
* on a paragraph boundary and entered in real mode.
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )
.section ".note.GNU-stack", "", @progbits
.text
.arch i386
.org 0
.code16
#include <librm.h>
.section ".prefix", "ax", @progbits
.globl _raw_start
_raw_start:
/* Adjust %cs so that %cs:0000 is the start of the image */
movw %cs, %ax
call 1f
1: popw %bx
subw $1b, %bx
shrw $4, %bx
addw %bx, %ax
pushw %ax
pushw $2f
lret
2:
/* Install iPXE */
call install
/* Set up real-mode stack */
movw %bx, %ss
movw $_estack16, %sp
/* Jump to .text16 segment */
pushw %ax
pushw $1f
lret
.section ".text16", "awx", @progbits
1:
/* Run iPXE */
virtcall main
/* Uninstall iPXE */
call uninstall
/* Boot next device */
int $0x18
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