1 /* 2 * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <arch_helpers.h> 8 #include <assert.h> 9 #include <bl_common.h> 10 #include <debug.h> 11 #include <errno.h> 12 #if TRUSTED_BOARD_BOOT 13 #include <mbedtls_config.h> 14 #endif 15 #include <platform.h> 16 #include <xlat_tables_compat.h> 17 18 /* 19 * The following platform functions are weakly defined. The Platforms 20 * may redefine with strong definition. 21 */ 22 #pragma weak bl2_el3_plat_prepare_exit 23 #pragma weak plat_error_handler 24 #pragma weak bl2_plat_preload_setup 25 #pragma weak bl2_plat_handle_pre_image_load 26 #pragma weak bl2_plat_handle_post_image_load 27 #pragma weak plat_try_next_boot_source 28 #pragma weak plat_get_mbedtls_heap 29 30 void bl2_el3_plat_prepare_exit(void) 31 { 32 } 33 34 void __dead2 plat_error_handler(int err) 35 { 36 while (1) 37 wfi(); 38 } 39 40 void bl2_plat_preload_setup(void) 41 { 42 } 43 44 int bl2_plat_handle_pre_image_load(unsigned int image_id) 45 { 46 return 0; 47 } 48 49 int bl2_plat_handle_post_image_load(unsigned int image_id) 50 { 51 return 0; 52 } 53 54 int plat_try_next_boot_source(void) 55 { 56 return 0; 57 } 58 59 #if TRUSTED_BOARD_BOOT 60 /* 61 * The following default implementation of the function simply returns the 62 * by-default allocated heap. 63 */ 64 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size) 65 { 66 static unsigned char heap[TF_MBEDTLS_HEAP_SIZE]; 67 68 assert(heap_addr != NULL); 69 assert(heap_size != NULL); 70 71 *heap_addr = heap; 72 *heap_size = sizeof(heap); 73 return 0; 74 } 75 #endif /* TRUSTED_BOARD_BOOT */ 76