57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <bl_common.h>
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#include <desc_image_load.h>
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#include <plat_arm.h>
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#if JUNO_AARCH32_EL3_RUNTIME
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/*******************************************************************************
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* This function changes the spsr for BL32 image to bypass
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* the check in BL1 AArch64 exception handler. This is needed in the aarch32
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* boot flow as the core comes up in aarch64 and to enter the BL32 image a warm
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* reset in aarch32 state is required.
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******************************************************************************/
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int bl2_plat_handle_post_image_load(unsigned int image_id)
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{
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int err = arm_bl2_handle_post_image_load(image_id);
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if (!err && (image_id == BL32_IMAGE_ID)) {
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bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
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assert(bl_mem_params);
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bl_mem_params->ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
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DISABLE_ALL_EXCEPTIONS);
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}
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return err;
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}
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#endif /* JUNO_AARCH32_EL3_RUNTIME */
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