1 /* 2 * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <assert.h> 32 #include <common_def.h> 33 #include <debug.h> 34 #include <io_driver.h> 35 #include <io_storage.h> 36 #include <io_semihosting.h> 37 #include <plat_arm.h> 38 #include <semihosting.h> /* For FOPEN_MODE_... */ 39 40 /* Semihosting filenames */ 41 #define BL2_IMAGE_NAME "bl2.bin" 42 #define BL31_IMAGE_NAME "bl31.bin" 43 #define BL32_IMAGE_NAME "bl32.bin" 44 #define BL33_IMAGE_NAME "bl33.bin" 45 46 #if TRUSTED_BOARD_BOOT 47 #define TRUSTED_BOOT_FW_CERT_NAME "tb_fw.crt" 48 #define TRUSTED_KEY_CERT_NAME "trusted_key.crt" 49 #define SOC_FW_KEY_CERT_NAME "soc_fw_key.crt" 50 #define TOS_FW_KEY_CERT_NAME "tos_fw_key.crt" 51 #define NT_FW_KEY_CERT_NAME "nt_fw_key.crt" 52 #define SOC_FW_CONTENT_CERT_NAME "soc_fw_content.crt" 53 #define TOS_FW_CONTENT_CERT_NAME "tos_fw_content.crt" 54 #define NT_FW_CONTENT_CERT_NAME "nt_fw_content.crt" 55 #endif /* TRUSTED_BOARD_BOOT */ 56 57 /* IO devices */ 58 static const io_dev_connector_t *sh_dev_con; 59 static uintptr_t sh_dev_handle; 60 61 static const io_file_spec_t sh_file_spec[] = { 62 [BL2_IMAGE_ID] = { 63 .path = BL2_IMAGE_NAME, 64 .mode = FOPEN_MODE_RB 65 }, 66 [BL31_IMAGE_ID] = { 67 .path = BL31_IMAGE_NAME, 68 .mode = FOPEN_MODE_RB 69 }, 70 [BL32_IMAGE_ID] = { 71 .path = BL32_IMAGE_NAME, 72 .mode = FOPEN_MODE_RB 73 }, 74 [BL33_IMAGE_ID] = { 75 .path = BL33_IMAGE_NAME, 76 .mode = FOPEN_MODE_RB 77 }, 78 #if TRUSTED_BOARD_BOOT 79 [TRUSTED_BOOT_FW_CERT_ID] = { 80 .path = TRUSTED_BOOT_FW_CERT_NAME, 81 .mode = FOPEN_MODE_RB 82 }, 83 [TRUSTED_KEY_CERT_ID] = { 84 .path = TRUSTED_KEY_CERT_NAME, 85 .mode = FOPEN_MODE_RB 86 }, 87 [SOC_FW_KEY_CERT_ID] = { 88 .path = SOC_FW_KEY_CERT_NAME, 89 .mode = FOPEN_MODE_RB 90 }, 91 [TRUSTED_OS_FW_KEY_CERT_ID] = { 92 .path = TOS_FW_KEY_CERT_NAME, 93 .mode = FOPEN_MODE_RB 94 }, 95 [NON_TRUSTED_FW_KEY_CERT_ID] = { 96 .path = NT_FW_KEY_CERT_NAME, 97 .mode = FOPEN_MODE_RB 98 }, 99 [SOC_FW_CONTENT_CERT_ID] = { 100 .path = SOC_FW_CONTENT_CERT_NAME, 101 .mode = FOPEN_MODE_RB 102 }, 103 [TRUSTED_OS_FW_CONTENT_CERT_ID] = { 104 .path = TOS_FW_CONTENT_CERT_NAME, 105 .mode = FOPEN_MODE_RB 106 }, 107 [NON_TRUSTED_FW_CONTENT_CERT_ID] = { 108 .path = NT_FW_CONTENT_CERT_NAME, 109 .mode = FOPEN_MODE_RB 110 }, 111 #endif /* TRUSTED_BOARD_BOOT */ 112 }; 113 114 115 static int open_semihosting(const uintptr_t spec) 116 { 117 int result; 118 uintptr_t local_image_handle; 119 120 /* See if the file exists on semi-hosting.*/ 121 result = io_dev_init(sh_dev_handle, (uintptr_t)NULL); 122 if (result == 0) { 123 result = io_open(sh_dev_handle, spec, &local_image_handle); 124 if (result == 0) { 125 VERBOSE("Using Semi-hosting IO\n"); 126 io_close(local_image_handle); 127 } 128 } 129 return result; 130 } 131 132 void plat_arm_io_setup(void) 133 { 134 int io_result; 135 136 arm_io_setup(); 137 138 /* Register the additional IO devices on this platform */ 139 io_result = register_io_dev_sh(&sh_dev_con); 140 assert(io_result == 0); 141 142 /* Open connections to devices and cache the handles */ 143 io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle); 144 assert(io_result == 0); 145 146 /* Ignore improbable errors in release builds */ 147 (void)io_result; 148 } 149 150 /* 151 * FVP provides semihosting as an alternative to load images 152 */ 153 int plat_arm_get_alt_image_source(unsigned int image_id, uintptr_t *dev_handle, 154 uintptr_t *image_spec) 155 { 156 int result = open_semihosting((const uintptr_t)&sh_file_spec[image_id]); 157 if (result == 0) { 158 *dev_handle = sh_dev_handle; 159 *image_spec = (uintptr_t)&sh_file_spec[image_id]; 160 } 161 162 return result; 163 } 164