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 17 /* 18 * The following platform functions are weakly defined. The Platforms 19 * may redefine with strong definition. 20 */ 21 #pragma weak bl2_el3_plat_prepare_exit 22 #pragma weak plat_error_handler 23 #pragma weak bl2_plat_preload_setup 24 #pragma weak bl2_plat_handle_pre_image_load 25 #pragma weak bl2_plat_handle_post_image_load 26 #pragma weak plat_try_next_boot_source 27 #pragma weak plat_get_mbedtls_heap 28 29 void bl2_el3_plat_prepare_exit(void) 30 { 31 } 32 33 void __dead2 plat_error_handler(int err) 34 { 35 while (1) 36 wfi(); 37 } 38 39 void bl2_plat_preload_setup(void) 40 { 41 } 42 43 int bl2_plat_handle_pre_image_load(unsigned int image_id) 44 { 45 return 0; 46 } 47 48 int bl2_plat_handle_post_image_load(unsigned int image_id) 49 { 50 return 0; 51 } 52 53 int plat_try_next_boot_source(void) 54 { 55 return 0; 56 } 57 58 #if !ERROR_DEPRECATED 59 #pragma weak bl2_early_platform_setup2 60 61 /* 62 * The following platform API implementation that allow compatibility for 63 * the older platform APIs. 64 */ 65 void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, 66 u_register_t arg2, u_register_t arg3) 67 { 68 bl2_early_platform_setup((void *)arg1); 69 } 70 #endif 71 72 73 #if TRUSTED_BOARD_BOOT 74 /* 75 * The following default implementation of the function simply returns the 76 * by-default allocated heap. 77 */ 78 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size) 79 { 80 static unsigned char heap[TF_MBEDTLS_HEAP_SIZE]; 81 82 assert(heap_addr != NULL); 83 assert(heap_size != NULL); 84 85 *heap_addr = heap; 86 *heap_size = sizeof(heap); 87 return 0; 88 } 89 #endif /* TRUSTED_BOARD_BOOT */ 90