| /* |
| * 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 |
| .code16 |
| .arch i386 |
| .org 0 |
| |
| #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 |
