blob: 101eb33d07da5e30496e6669f967f13c703760fa [file] [log] [blame]
/*
* Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <auth_mod.h>
#include <bl1.h>
#include <bl2.h>
#include <bl_common.h>
#include <console.h>
#include <debug.h>
#include <platform.h>
#include "bl2_private.h"
#ifdef AARCH32
#define NEXT_IMAGE "BL32"
#else
#define NEXT_IMAGE "BL31"
#endif
/*******************************************************************************
* The only thing to do in BL2 is to load further images and pass control to
* next BL. The memory occupied by BL2 will be reclaimed by BL3x stages. BL2
* runs entirely in S-EL1.
******************************************************************************/
void bl2_main(void)
{
entry_point_info_t *next_bl_ep_info;
NOTICE("BL2: %s\n", version_string);
NOTICE("BL2: %s\n", build_message);
/* Perform remaining generic architectural setup in S-EL1 */
bl2_arch_setup();
#if TRUSTED_BOARD_BOOT
/* Initialize authentication module */
auth_mod_init();
#endif /* TRUSTED_BOARD_BOOT */
/* initialize boot source */
bl2_plat_preload_setup();
/* Load the subsequent bootloader images. */
next_bl_ep_info = bl2_load_images();
#if !BL2_AT_EL3
#ifdef AARCH32
/*
* For AArch32 state BL1 and BL2 share the MMU setup.
* Given that BL2 does not map BL1 regions, MMU needs
* to be disabled in order to go back to BL1.
*/
disable_mmu_icache_secure();
#endif /* AARCH32 */
console_flush();
/*
* Run next BL image via an SMC to BL1. Information on how to pass
* control to the BL32 (if present) and BL33 software images will
* be passed to next BL image as an argument.
*/
smc(BL1_SMC_RUN_IMAGE, (unsigned long)next_bl_ep_info, 0, 0, 0, 0, 0, 0);
#else
NOTICE("BL2: Booting " NEXT_IMAGE "\n");
print_entry_point_info(next_bl_ep_info);
console_flush();
bl2_run_next_image(next_bl_ep_info);
#endif
}