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/*
* Xtensa Secondary Processors startup code.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2013 Tensilica Inc.
*
* Joe Taylor <joe@tensilica.com>
* Chris Zankel <chris@zankel.net>
* Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
* Pete Delaney <piet@tensilica.com>
*/
#include <linux/linkage.h>
#include <asm/cacheasm.h>
#include <asm/initialize_mmu.h>
#include <asm/mxregs.h>
#include <asm/regs.h>
.section .SecondaryResetVector.text, "ax"
ENTRY(_SecondaryResetVector)
_j _SetupOCD
.begin no-absolute-literals
.literal_position
_SetupOCD:
/*
* Initialize WB, WS, and clear PS.EXCM (to allow loop instructions).
* Set Interrupt Level just below XCHAL_DEBUGLEVEL to allow
* xt-gdb to single step via DEBUG exceptions received directly
* by ocd.
*/
movi a1, 1
movi a0, 0
wsr a1, windowstart
wsr a0, windowbase
rsync
movi a1, LOCKLEVEL
wsr a1, ps
rsync
_SetupMMU:
Offset = _SetupMMU - _SecondaryResetVector
#ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
initialize_mmu
#endif
/*
* Start Secondary Processors with NULL pointer to boot params.
*/
movi a2, 0 # a2 == NULL
movi a3, _startup
jx a3
.end no-absolute-literals
.section .SecondaryResetVector.remapped_text, "ax"
.global _RemappedSecondaryResetVector
.org 0 # Need to do org before literals
_RemappedSecondaryResetVector:
.begin no-absolute-literals
.literal_position
_j _RemappedSetupMMU
. = _RemappedSecondaryResetVector + Offset
_RemappedSetupMMU:
#ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
initialize_mmu
#endif
.end no-absolute-literals
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