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.text
.arch i386
.code16
.section ".prefix", "ax", @progbits
.org 0
nbi_header:
/*****************************************************************************
* NBI file header
*****************************************************************************
*/
file_header:
.long 0x1b031336 /* Signature */
.byte 0x04 /* 16 bytes header, no vendor info */
.byte 0
.byte 0
.byte 0 /* No flags */
.word 0x0000, 0x07c0 /* Load header to 0x07c0:0x0000 */
.word _nbi_start, 0x07c0 /* Start execution at 0x07c0:entry */
.size file_header, . - file_header
/*****************************************************************************
* NBI segment header
*****************************************************************************
*/
segment_header:
.byte 0x04 /* 16 bytes header, no vendor info */
.byte 0
.byte 0
.byte 0x04 /* Last segment */
.long 0x00007e00
imglen: .long -512
memlen: .long -512
.size segment_header, . - segment_header
.section ".zinfo.fixup", "a", @progbits /* Compressor fixups */
.ascii "ADDL"
.long imglen
.long 1
.long 0
.ascii "ADDL"
.long memlen
.long 1
.long 0
.previous
/*****************************************************************************
* NBI entry point
*****************************************************************************
*/
.globl _nbi_start
_nbi_start:
/* 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:
pushl $main
pushw %cs
call prot_call
popl %ecx /* discard */
/* Uninstall iPXE */
call uninstall
/* Reboot system */
int $0x19
.previous
.size _nbi_start, . - _nbi_start
nbi_header_end:
.org 512
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