blob: 4cf1cc57355d83fc1f95d80f2ad1077da3346e08 [file] [log] [blame]
/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <bl_common.h>
#include <debug.h>
#include <errno.h>
#if TRUSTED_BOARD_BOOT
#include <mbedtls_config.h>
#endif
#include <platform.h>
#include <xlat_tables_compat.h>
/*
* The following platform functions are weakly defined. The Platforms
* may redefine with strong definition.
*/
#pragma weak bl2_el3_plat_prepare_exit
#pragma weak plat_error_handler
#pragma weak bl2_plat_preload_setup
#pragma weak bl2_plat_handle_pre_image_load
#pragma weak bl2_plat_handle_post_image_load
#pragma weak plat_try_next_boot_source
#pragma weak plat_get_mbedtls_heap
void bl2_el3_plat_prepare_exit(void)
{
}
void __dead2 plat_error_handler(int err)
{
while (1)
wfi();
}
void bl2_plat_preload_setup(void)
{
}
int bl2_plat_handle_pre_image_load(unsigned int image_id)
{
return 0;
}
int bl2_plat_handle_post_image_load(unsigned int image_id)
{
return 0;
}
int plat_try_next_boot_source(void)
{
return 0;
}
#if TRUSTED_BOARD_BOOT
/*
* The following default implementation of the function simply returns the
* by-default allocated heap.
*/
int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
{
static unsigned char heap[TF_MBEDTLS_HEAP_SIZE];
assert(heap_addr != NULL);
assert(heap_size != NULL);
*heap_addr = heap;
*heap_size = sizeof(heap);
return 0;
}
#endif /* TRUSTED_BOARD_BOOT */
/*
* Set up the page tables for the generic and platform-specific memory regions.
* The size of the Trusted SRAM seen by the BL image must be specified as well
* as an array specifying the generic memory regions which can be;
* - Code section;
* - Read-only data section;
* - Init code section, if applicable
* - Coherent memory region, if applicable.
*/
void __init setup_page_tables(const mmap_region_t *bl_regions,
const mmap_region_t *plat_regions)
{
#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
const mmap_region_t *regions = bl_regions;
while (regions->size != 0U) {
VERBOSE("Region: 0x%lx - 0x%lx has attributes 0x%x\n",
regions->base_va,
regions->base_va + regions->size,
regions->attr);
regions++;
}
#endif
/*
* Map the Trusted SRAM with appropriate memory attributes.
* Subsequent mappings will adjust the attributes for specific regions.
*/
mmap_add(bl_regions);
/* Now (re-)map the platform-specific memory regions */
mmap_add(plat_regions);
/* Create the page tables to reflect the above mappings */
init_xlat_tables();
}