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/*
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <arch_helpers.h>
#include <assert.h>
#include <auth_mod.h>
#include <bl1.h>
#include <bl_common.h>
#include <console.h>
#include <debug.h>
#include <platform.h>
#include <platform_def.h>
#include <stdint.h>
/*******************************************************************************
* This function is responsible to:
* Load SCP_BL2U if platform has defined SCP_BL2U_BASE
* Perform platform setup.
* Go back to EL3.
******************************************************************************/
void bl2u_main(void)
{
NOTICE("BL2U: %s\n", version_string);
NOTICE("BL2U: %s\n", build_message);
#if SCP_BL2U_BASE
int rc;
/* Load the subsequent bootloader images */
rc = bl2u_plat_handle_scp_bl2u();
if (rc) {
ERROR("Failed to load SCP_BL2U (%i)\n", rc);
panic();
}
#endif
/* Perform platform setup in BL2U after loading SCP_BL2U */
bl2u_platform_setup();
console_flush();
#ifdef AARCH32
/*
* For AArch32 state BL1 and BL2U share the MMU setup.
* Given that BL2U does not map BL1 regions, MMU needs
* to be disabled in order to go back to BL1.
*/
disable_mmu_icache_secure();
#endif /* AARCH32 */
/*
* Indicate that BL2U is done and resume back to
* normal world via an SMC to BL1.
* x1 could be passed to Normal world,
* so DO NOT pass any secret information.
*/
smc(FWU_SMC_SEC_IMAGE_DONE, 0, 0, 0, 0, 0, 0, 0);
wfi();
}
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