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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* PS3 bootwrapper entry.
*
* Copyright (C) 2007 Sony Computer Entertainment Inc.
* Copyright 2007 Sony Corp.
*/
#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
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