/*
 * arch/xtensa/boot/boot-elf/bootstrap.S
 *
 * Low-level exception handling
 *
 * 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) 2004 - 2013 by Tensilica Inc.
 *
 * Chris Zankel <chris@zankel.net>
 * Marc Gauthier <marc@tensilica.com>
 * Piet Delaney <piet@tensilica.com>
 */

#include <asm/bootparam.h>
#include <asm/initialize_mmu.h>
#include <asm/vectors.h>
#include <linux/linkage.h>

        .section        .ResetVector.text, "ax"
        .global         _ResetVector
        .global         reset

_ResetVector:
        _j _SetupMMU

        .begin  no-absolute-literals
        .literal_position

#ifdef CONFIG_PARSE_BOOTPARAM
        .align 4
_bootparam:
        .short  BP_TAG_FIRST
        .short  4
        .long   BP_VERSION
        .short  BP_TAG_LAST
        .short  0
        .long   0
#endif

        .align  4
_SetupMMU:
#if XCHAL_HAVE_WINDOWED
        movi    a0, 0
        wsr     a0, windowbase
        rsync
        movi    a0, 1
        wsr     a0, windowstart
        rsync
#endif
        movi    a0, 0x1F
        wsr     a0, ps
        rsync

#ifndef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
        initialize_mmu
#endif

        rsil    a0, XCHAL_DEBUGLEVEL-1
        rsync
reset:
#if defined(CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX) && \
        XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
        movi    a0, CONFIG_KERNEL_LOAD_ADDRESS
#else
        movi    a0, KERNELOFFSET
#endif
#ifdef CONFIG_PARSE_BOOTPARAM
        movi    a2, _bootparam
#else
        movi    a2, 0
#endif
        movi    a3, 0
        movi    a4, 0
        jx      a0

        .end    no-absolute-literals