/*
|
* PS3 bootwrapper entry.
|
*
|
* Copyright (C) 2007 Sony Computer Entertainment Inc.
|
* Copyright 2007 Sony Corp.
|
*
|
* 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; version 2 of the License.
|
*
|
* This program is distributed in the hope that it will be useful,
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
* GNU General Public License for more details.
|
*
|
* You should have received a copy of the GNU General Public License
|
* along with this program; if not, write to the Free Software
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
*/
|
|
#include "ppc_asm.h"
|
|
.machine "ppc64"
|
|
.text
|
|
/*
|
* __system_reset_overlay - The PS3 first stage entry.
|
*
|
* The bootwraper build script copies the 512 bytes at symbol
|
* __system_reset_overlay to offset 0x100 of the rom image. This symbol
|
* must occupy 512 or less bytes.
|
*
|
* The PS3 has a single processor with two threads.
|
*/
|
|
.globl __system_reset_overlay
|
__system_reset_overlay:
|
|
/* Switch to 32-bit mode. */
|
|
mfmsr r9
|
clrldi r9,r9,1
|
mtmsrd r9
|
nop
|
|
/* Get thread number in r3 and branch. */
|
|
mfspr r3, 0x88
|
cntlzw. r3, r3
|
beq 1f
|
|
/* Secondary goes to __secondary_hold in kernel. */
|
|
li r4, 0x60
|
mtctr r4
|
bctr
|
|
1:
|
/* Primary delays then goes to _zimage_start in wrapper. */
|
|
or 31, 31, 31 /* db16cyc */
|
or 31, 31, 31 /* db16cyc */
|
|
lis r4, _zimage_start@ha
|
addi r4, r4, _zimage_start@l
|
mtctr r4
|
bctr
|
|
. = __system_reset_overlay + 512
|
|
/*
|
* __system_reset_kernel - Place holder for the kernel reset vector.
|
*
|
* The bootwrapper build script copies 512 bytes from offset 0x100
|
* of the rom image to the symbol __system_reset_kernel. At runtime
|
* the bootwrapper program copies the 512 bytes at __system_reset_kernel
|
* to ram address 0x100. This symbol must occupy 512 bytes.
|
*/
|
|
.globl __system_reset_kernel
|
__system_reset_kernel:
|
|
. = __system_reset_kernel + 512
|
