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/*
* Copyright (C) Paul Mackerras 1997.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* NOTE: this code runs in 32 bit mode and is packaged as ELF32.
*/
#include "ppc_asm.h"
.text
.globl _zimage_start
_zimage_start:
bl reloc_offset
reloc_offset:
mflr r0
lis r9,reloc_offset@ha
addi r9,r9,reloc_offset@l
subf. r0,r9,r0
beq clear_caches
reloc_got2:
lis r9,__got2_start@ha
addi r9,r9,__got2_start@l
lis r8,__got2_end@ha
addi r8,r8,__got2_end@l
subf. r8,r9,r8
beq clear_caches
srwi. r8,r8,2
mtctr r8
add r9,r0,r9
reloc_got2_loop:
lwz r8,0(r9)
add r8,r8,r0
stw r8,0(r9)
addi r9,r9,4
bdnz reloc_got2_loop
clear_caches:
lis r9,_start@h
add r9,r0,r9
lis r8,_etext@ha
addi r8,r8,_etext@l
add r8,r0,r8
1: dcbf r0,r9
icbi r0,r9
addi r9,r9,0x20
cmplwi 0,r9,8
blt 1b
sync
isync
mr r6,r1
b start
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