blob: a626830231ffad00d7faba8d83360fbbfdcebec3 [file] [log] [blame]
/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <arm_def.h>
#include <assert.h>
#include <bl_common.h>
#include <generic_delay_timer.h>
#include <plat_arm.h>
#include <platform_def.h>
#include <platform.h>
#include <string.h>
/* Weak definitions may be overridden in specific ARM standard platform */
#pragma weak bl2u_platform_setup
#pragma weak bl2u_early_platform_setup
#pragma weak bl2u_plat_arch_setup
#define MAP_BL2U_TOTAL MAP_REGION_FLAT( \
BL2U_BASE, \
BL2U_LIMIT - BL2U_BASE, \
MT_MEMORY | MT_RW | MT_SECURE)
/*
* Perform ARM standard platform setup for BL2U
*/
void arm_bl2u_platform_setup(void)
{
/* Initialize the secure environment */
plat_arm_security_setup();
}
void bl2u_platform_setup(void)
{
arm_bl2u_platform_setup();
}
void arm_bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
{
/* Initialize the console to provide early debug support */
arm_console_boot_init();
generic_delay_timer_init();
}
/*******************************************************************************
* BL1 can pass platform dependent information to BL2U in x1.
* In case of ARM CSS platforms x1 contains SCP_BL2U image info.
* In case of ARM FVP platforms x1 is not used.
* In both cases, x0 contains the extents of the memory available to BL2U
******************************************************************************/
void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
{
arm_bl2u_early_platform_setup(mem_layout, plat_info);
}
/*******************************************************************************
* Perform the very early platform specific architectural setup here. At the
* moment this is only initializes the mmu in a quick and dirty way.
* The memory that is used by BL2U is only mapped.
******************************************************************************/
void arm_bl2u_plat_arch_setup(void)
{
#if USE_COHERENT_MEM
/* Ensure ARM platforms dont use coherent memory in BL2U */
assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
#endif
const mmap_region_t bl_regions[] = {
MAP_BL2U_TOTAL,
ARM_MAP_BL_RO,
{0}
};
arm_setup_page_tables(bl_regions, plat_arm_get_mmap());
#ifdef AARCH32
enable_mmu_secure(0);
#else
enable_mmu_el1(0);
#endif
}
void bl2u_plat_arch_setup(void)
{
arm_bl2u_plat_arch_setup();
}