| George Beckstein | d82afbf | 2020-10-29 17:32:11 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2020 Embedded Planet |
| 3 | * Copyright (c) 2020 ARM Limited |
| 4 | * SPDX-License-Identifier: Apache-2.0 |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License |
| 17 | */ |
| 18 | |
| 19 | #if MCUBOOT_BOOTLOADER_BUILD |
| 20 | |
| 21 | #include <stdlib.h> |
| 22 | #include "bootutil/bootutil.h" |
| 23 | #include "bootutil/image.h" |
| 24 | #include "hal/serial_api.h" |
| 25 | #include "mbed_application.h" |
| 26 | |
| 27 | #if (MCUBOOT_CRYPTO_BACKEND == MBEDTLS) |
| 28 | #include "mbedtls/platform.h" |
| 29 | #elif (MCUBOOT_CRYPTO_BACKEND == TINYCRYPT) |
| 30 | #include "tinycrypt/ecc.h" |
| 31 | #endif |
| 32 | |
| 33 | #define MBED_TRACE_MAX_LEVEL TRACE_LEVEL_DEBUG |
| 34 | #define TRACE_GROUP "BL" |
| 35 | #include "mbed-trace/mbed_trace.h" |
| 36 | |
| 37 | #if (MCUBOOT_CRYPTO_BACKEND == TINYCRYPT) |
| 38 | /* XXX add this global definition for linking only |
| 39 | * TinyCrypt is used for signature verification and ECIES using secp256r1 and AES encryption; |
| 40 | * RNG is not required. So here we provide a stub. |
| 41 | * See https://github.com/mcu-tools/mcuboot/pull/791#discussion_r514480098 |
| 42 | */ |
| 43 | |
| 44 | extern "C" { |
| 45 | int default_CSPRNG(uint8_t *dest, unsigned int size) { return 0; } |
| 46 | } |
| 47 | #endif |
| 48 | |
| 49 | int main() |
| 50 | { |
| 51 | int rc; |
| 52 | |
| 53 | mbed_trace_init(); |
| 54 | #if MCUBOOT_LOG_BOOTLOADER_ONLY |
| 55 | mbed_trace_include_filters_set("MCUb,BL"); |
| 56 | #endif |
| 57 | |
| 58 | tr_info("Starting MCUboot"); |
| 59 | |
| 60 | #if (MCUBOOT_CRYPTO_BACKEND == MBEDTLS) |
| 61 | // Initialize mbedtls crypto for use by MCUboot |
| 62 | mbedtls_platform_context unused_ctx; |
| 63 | rc = mbedtls_platform_setup(&unused_ctx); |
| 64 | if(rc != 0) { |
| 65 | tr_error("Failed to setup Mbed TLS, error: %d", rc); |
| 66 | exit(rc); |
| 67 | } |
| 68 | #elif (MCUBOOT_CRYPTO_BACKEND == TINYCRYPT) |
| 69 | uECC_set_rng(0); |
| 70 | #endif |
| 71 | |
| 72 | struct boot_rsp rsp; |
| 73 | rc = boot_go(&rsp); |
| 74 | if(rc != 0) { |
| 75 | tr_error("Failed to locate firmware image, error: %d", rc); |
| 76 | exit(rc); |
| 77 | } |
| 78 | |
| 79 | uint32_t address = rsp.br_image_off + rsp.br_hdr->ih_hdr_size; |
| 80 | |
| 81 | // Workaround: The extra \n ensures the last trace gets flushed |
| 82 | // before mbed_start_application() destroys the stack and jumps |
| 83 | // to the application |
| 84 | tr_info("Booting firmware image at 0x%x\n", address); |
| 85 | |
| 86 | // Run the application in the primary slot |
| 87 | // Add header size offset to calculate the actual start address of application |
| 88 | mbed_start_application(address); |
| 89 | } |
| 90 | |
| 91 | #endif // MCUBOOT_BOOTLOADER_BUILD |