1 /* 2 * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <string.h> 9 10 #include <platform_def.h> 11 12 #include <arch_helpers.h> 13 #include <common/debug.h> 14 #include <drivers/io/io_block.h> 15 #include <drivers/io/io_driver.h> 16 #include <drivers/io/io_dummy.h> 17 #include <drivers/io/io_storage.h> 18 #include <drivers/mmc.h> 19 #include <drivers/partition/partition.h> 20 #include <drivers/st/io_mmc.h> 21 #include <drivers/st/io_stm32image.h> 22 #include <drivers/st/stm32_sdmmc2.h> 23 #include <lib/mmio.h> 24 #include <lib/utils.h> 25 #include <plat/common/platform.h> 26 27 /* IO devices */ 28 static const io_dev_connector_t *dummy_dev_con; 29 static uintptr_t dummy_dev_handle; 30 static uintptr_t dummy_dev_spec; 31 32 static uintptr_t image_dev_handle; 33 34 static io_block_spec_t gpt_block_spec = { 35 .offset = 0, 36 .length = 34 * MMC_BLOCK_SIZE, /* Size of GPT table */ 37 }; 38 39 static uint32_t block_buffer[MMC_BLOCK_SIZE] __aligned(MMC_BLOCK_SIZE); 40 41 static const io_block_dev_spec_t mmc_block_dev_spec = { 42 /* It's used as temp buffer in block driver */ 43 .buffer = { 44 .offset = (size_t)&block_buffer, 45 .length = MMC_BLOCK_SIZE, 46 }, 47 .ops = { 48 .read = mmc_read_blocks, 49 .write = NULL, 50 }, 51 .block_size = MMC_BLOCK_SIZE, 52 }; 53 54 static uintptr_t storage_dev_handle; 55 static const io_dev_connector_t *mmc_dev_con; 56 57 #ifdef AARCH32_SP_OPTEE 58 static const struct stm32image_part_info optee_header_partition_spec = { 59 .name = OPTEE_HEADER_IMAGE_NAME, 60 .binary_type = OPTEE_HEADER_BINARY_TYPE, 61 }; 62 63 static const struct stm32image_part_info optee_pager_partition_spec = { 64 .name = OPTEE_PAGER_IMAGE_NAME, 65 .binary_type = OPTEE_PAGER_BINARY_TYPE, 66 }; 67 68 static const struct stm32image_part_info optee_paged_partition_spec = { 69 .name = OPTEE_PAGED_IMAGE_NAME, 70 .binary_type = OPTEE_PAGED_BINARY_TYPE, 71 }; 72 #else 73 static const io_block_spec_t bl32_block_spec = { 74 .offset = BL32_BASE, 75 .length = STM32MP_BL32_SIZE 76 }; 77 #endif 78 79 static const io_block_spec_t bl2_block_spec = { 80 .offset = BL2_BASE, 81 .length = STM32MP_BL2_SIZE, 82 }; 83 84 static const struct stm32image_part_info bl33_partition_spec = { 85 .name = BL33_IMAGE_NAME, 86 .binary_type = BL33_BINARY_TYPE, 87 }; 88 89 enum { 90 IMG_IDX_BL33, 91 #ifdef AARCH32_SP_OPTEE 92 IMG_IDX_OPTEE_HEADER, 93 IMG_IDX_OPTEE_PAGER, 94 IMG_IDX_OPTEE_PAGED, 95 #endif 96 IMG_IDX_NUM 97 }; 98 99 static struct stm32image_device_info stm32image_dev_info_spec = { 100 .lba_size = MMC_BLOCK_SIZE, 101 .part_info[IMG_IDX_BL33] = { 102 .name = BL33_IMAGE_NAME, 103 .binary_type = BL33_BINARY_TYPE, 104 }, 105 #ifdef AARCH32_SP_OPTEE 106 .part_info[IMG_IDX_OPTEE_HEADER] = { 107 .name = OPTEE_HEADER_IMAGE_NAME, 108 .binary_type = OPTEE_HEADER_BINARY_TYPE, 109 }, 110 .part_info[IMG_IDX_OPTEE_PAGER] = { 111 .name = OPTEE_PAGER_IMAGE_NAME, 112 .binary_type = OPTEE_PAGER_BINARY_TYPE, 113 }, 114 .part_info[IMG_IDX_OPTEE_PAGED] = { 115 .name = OPTEE_PAGED_IMAGE_NAME, 116 .binary_type = OPTEE_PAGED_BINARY_TYPE, 117 }, 118 #endif 119 }; 120 121 static io_block_spec_t stm32image_block_spec = { 122 .offset = 0, 123 .length = 0, 124 }; 125 126 static const io_dev_connector_t *stm32image_dev_con; 127 128 static int open_dummy(const uintptr_t spec); 129 static int open_image(const uintptr_t spec); 130 static int open_storage(const uintptr_t spec); 131 132 struct plat_io_policy { 133 uintptr_t *dev_handle; 134 uintptr_t image_spec; 135 int (*check)(const uintptr_t spec); 136 }; 137 138 static const struct plat_io_policy policies[] = { 139 [BL2_IMAGE_ID] = { 140 .dev_handle = &dummy_dev_handle, 141 .image_spec = (uintptr_t)&bl2_block_spec, 142 .check = open_dummy 143 }, 144 #ifdef AARCH32_SP_OPTEE 145 [BL32_IMAGE_ID] = { 146 .dev_handle = &image_dev_handle, 147 .image_spec = (uintptr_t)&optee_header_partition_spec, 148 .check = open_image 149 }, 150 [BL32_EXTRA1_IMAGE_ID] = { 151 .dev_handle = &image_dev_handle, 152 .image_spec = (uintptr_t)&optee_pager_partition_spec, 153 .check = open_image 154 }, 155 [BL32_EXTRA2_IMAGE_ID] = { 156 .dev_handle = &image_dev_handle, 157 .image_spec = (uintptr_t)&optee_paged_partition_spec, 158 .check = open_image 159 }, 160 #else 161 [BL32_IMAGE_ID] = { 162 .dev_handle = &dummy_dev_handle, 163 .image_spec = (uintptr_t)&bl32_block_spec, 164 .check = open_dummy 165 }, 166 #endif 167 [BL33_IMAGE_ID] = { 168 .dev_handle = &image_dev_handle, 169 .image_spec = (uintptr_t)&bl33_partition_spec, 170 .check = open_image 171 }, 172 [GPT_IMAGE_ID] = { 173 .dev_handle = &storage_dev_handle, 174 .image_spec = (uintptr_t)&gpt_block_spec, 175 .check = open_storage 176 }, 177 [STM32_IMAGE_ID] = { 178 .dev_handle = &storage_dev_handle, 179 .image_spec = (uintptr_t)&stm32image_block_spec, 180 .check = open_storage 181 } 182 }; 183 184 static int open_dummy(const uintptr_t spec) 185 { 186 return io_dev_init(dummy_dev_handle, 0); 187 } 188 189 static int open_image(const uintptr_t spec) 190 { 191 return io_dev_init(image_dev_handle, 0); 192 } 193 194 static int open_storage(const uintptr_t spec) 195 { 196 return io_dev_init(storage_dev_handle, 0); 197 } 198 199 static void print_boot_device(boot_api_context_t *boot_context) 200 { 201 switch (boot_context->boot_interface_selected) { 202 case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_SD: 203 INFO("Using SDMMC\n"); 204 break; 205 case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_EMMC: 206 INFO("Using EMMC\n"); 207 break; 208 default: 209 ERROR("Boot interface not found\n"); 210 panic(); 211 break; 212 } 213 214 if (boot_context->boot_interface_instance != 0U) { 215 INFO(" Instance %d\n", boot_context->boot_interface_instance); 216 } 217 } 218 219 static void boot_mmc(enum mmc_device_type mmc_dev_type, 220 uint16_t boot_interface_instance) 221 { 222 int io_result __unused; 223 uint8_t idx; 224 struct stm32image_part_info *part; 225 struct stm32_sdmmc2_params params; 226 struct mmc_device_info device_info; 227 const partition_entry_t *entry; 228 229 zeromem(&device_info, sizeof(struct mmc_device_info)); 230 zeromem(¶ms, sizeof(struct stm32_sdmmc2_params)); 231 232 device_info.mmc_dev_type = mmc_dev_type; 233 234 switch (boot_interface_instance) { 235 case 1: 236 params.reg_base = STM32MP_SDMMC1_BASE; 237 break; 238 case 2: 239 params.reg_base = STM32MP_SDMMC2_BASE; 240 break; 241 case 3: 242 params.reg_base = STM32MP_SDMMC3_BASE; 243 break; 244 default: 245 WARN("SDMMC instance not found, using default\n"); 246 if (mmc_dev_type == MMC_IS_SD) { 247 params.reg_base = STM32MP_SDMMC1_BASE; 248 } else { 249 params.reg_base = STM32MP_SDMMC2_BASE; 250 } 251 break; 252 } 253 254 params.device_info = &device_info; 255 if (stm32_sdmmc2_mmc_init(¶ms) != 0) { 256 ERROR("SDMMC%u init failed\n", boot_interface_instance); 257 panic(); 258 } 259 260 /* Open MMC as a block device to read GPT table */ 261 io_result = register_io_dev_block(&mmc_dev_con); 262 if (io_result != 0) { 263 panic(); 264 } 265 266 io_result = io_dev_open(mmc_dev_con, (uintptr_t)&mmc_block_dev_spec, 267 &storage_dev_handle); 268 assert(io_result == 0); 269 270 partition_init(GPT_IMAGE_ID); 271 272 io_result = io_dev_close(storage_dev_handle); 273 assert(io_result == 0); 274 275 stm32image_dev_info_spec.device_size = 276 stm32_sdmmc2_mmc_get_device_size(); 277 278 for (idx = 0U; idx < IMG_IDX_NUM; idx++) { 279 part = &stm32image_dev_info_spec.part_info[idx]; 280 entry = get_partition_entry(part->name); 281 if (entry == NULL) { 282 ERROR("Partition %s not found\n", part->name); 283 panic(); 284 } 285 286 part->part_offset = entry->start; 287 part->bkp_offset = 0U; 288 } 289 290 /* 291 * Re-open MMC with io_mmc, for better perfs compared to 292 * io_block. 293 */ 294 io_result = register_io_dev_mmc(&mmc_dev_con); 295 assert(io_result == 0); 296 297 io_result = io_dev_open(mmc_dev_con, 0, &storage_dev_handle); 298 assert(io_result == 0); 299 300 io_result = register_io_dev_stm32image(&stm32image_dev_con); 301 assert(io_result == 0); 302 303 io_result = io_dev_open(stm32image_dev_con, 304 (uintptr_t)&stm32image_dev_info_spec, 305 &image_dev_handle); 306 assert(io_result == 0); 307 } 308 309 void stm32mp_io_setup(void) 310 { 311 int io_result __unused; 312 boot_api_context_t *boot_context = 313 (boot_api_context_t *)stm32mp_get_boot_ctx_address(); 314 315 print_boot_device(boot_context); 316 317 if ((boot_context->boot_partition_used_toboot == 1U) || 318 (boot_context->boot_partition_used_toboot == 2U)) { 319 INFO("Boot used partition fsbl%d\n", 320 boot_context->boot_partition_used_toboot); 321 } 322 323 io_result = register_io_dev_dummy(&dummy_dev_con); 324 assert(io_result == 0); 325 326 io_result = io_dev_open(dummy_dev_con, dummy_dev_spec, 327 &dummy_dev_handle); 328 assert(io_result == 0); 329 330 switch (boot_context->boot_interface_selected) { 331 case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_SD: 332 dmbsy(); 333 boot_mmc(MMC_IS_SD, boot_context->boot_interface_instance); 334 break; 335 case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_EMMC: 336 dmbsy(); 337 boot_mmc(MMC_IS_EMMC, boot_context->boot_interface_instance); 338 break; 339 340 default: 341 ERROR("Boot interface %d not supported\n", 342 boot_context->boot_interface_selected); 343 break; 344 } 345 } 346 347 /* 348 * Return an IO device handle and specification which can be used to access 349 * an image. Use this to enforce platform load policy. 350 */ 351 int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle, 352 uintptr_t *image_spec) 353 { 354 int rc; 355 const struct plat_io_policy *policy; 356 357 assert(image_id < ARRAY_SIZE(policies)); 358 359 policy = &policies[image_id]; 360 rc = policy->check(policy->image_spec); 361 if (rc == 0) { 362 *image_spec = policy->image_spec; 363 *dev_handle = *(policy->dev_handle); 364 } 365 366 return rc; 367 } 368