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9003fa0b0c
The Firmware Update (FWU) feature needs support for an optional
secure world image, BL2U, to allow additional secure world
initialization required by FWU, for example DDR initialization.
This patch adds generic framework support to create BL2U.
NOTE: A platform makefile must supply additional `BL2U_SOURCES`
to build the bl2u target. A subsequent patch adds bl2u
support for ARM platforms.
Change-Id: If2ce036199bb40b39b7f91a9332106bcd4e25413
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/*
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* Copyright (c) 2015, 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 <arch.h>
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#include <arch_helpers.h>
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#include <assert.h>
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#include <auth_mod.h>
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#include <bl_common.h>
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#include <bl1.h>
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#include <debug.h>
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#include <platform.h>
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#include <platform_def.h>
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#include <stdint.h>
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/*******************************************************************************
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* This function is responsible to:
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* Load SCP_BL2U if platform has defined SCP_BL2U_BASE
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* Perform platform setup.
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* Go back to EL3.
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******************************************************************************/
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void bl2u_main(void)
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{
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NOTICE("BL2U: %s\n", version_string);
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NOTICE("BL2U: %s\n", build_message);
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#if SCP_BL2U_BASE
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int rc;
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/* Load the subsequent bootloader images */
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rc = bl2u_plat_handle_scp_bl2u();
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if (rc) {
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ERROR("Failed to load SCP_BL2U (%i)\n", rc);
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panic();
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}
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#endif
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/* Perform platform setup in BL2U after loading SCP_BL2U */
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bl2u_platform_setup();
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/*
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* Indicate that BL2U is done and resume back to
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* normal world via an SMC to BL1.
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* x1 could be passed to Normal world,
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* so DO NOT pass any secret information.
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*/
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smc(FWU_SMC_SEC_IMAGE_DONE, 0, 0, 0, 0, 0, 0, 0);
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wfi();
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}
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