Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | /* Define a simple and generic interface to access eMMC and SD-card devices. */ |
| 8 | |
| 9 | #include <arch_helpers.h> |
| 10 | #include <assert.h> |
| 11 | #include <debug.h> |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 12 | #include <delay_timer.h> |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 13 | #include <errno.h> |
| 14 | #include <mmc.h> |
| 15 | #include <stdbool.h> |
| 16 | #include <string.h> |
| 17 | #include <utils.h> |
| 18 | |
| 19 | #define MMC_DEFAULT_MAX_RETRIES 5 |
| 20 | #define SEND_OP_COND_MAX_RETRIES 100 |
| 21 | |
| 22 | #define MULT_BY_512K_SHIFT 19 |
| 23 | |
| 24 | static const struct mmc_ops *ops; |
| 25 | static unsigned int mmc_ocr_value; |
| 26 | static struct mmc_csd_emmc mmc_csd; |
| 27 | static unsigned char mmc_ext_csd[512] __aligned(4); |
| 28 | static unsigned int mmc_flags; |
| 29 | static struct mmc_device_info *mmc_dev_info; |
| 30 | static unsigned int rca; |
| 31 | |
| 32 | static const unsigned char tran_speed_base[16] = { |
| 33 | 0, 10, 12, 13, 15, 20, 26, 30, 35, 40, 45, 52, 55, 60, 70, 80 |
| 34 | }; |
| 35 | |
| 36 | static const unsigned char sd_tran_speed_base[16] = { |
| 37 | 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 |
| 38 | }; |
| 39 | |
| 40 | static bool is_cmd23_enabled(void) |
| 41 | { |
| 42 | return ((mmc_flags & MMC_FLAG_CMD23) != 0U); |
| 43 | } |
| 44 | |
| 45 | static int mmc_send_cmd(unsigned int idx, unsigned int arg, |
| 46 | unsigned int r_type, unsigned int *r_data) |
| 47 | { |
| 48 | struct mmc_cmd cmd; |
| 49 | int ret; |
| 50 | |
| 51 | zeromem(&cmd, sizeof(struct mmc_cmd)); |
| 52 | |
| 53 | cmd.cmd_idx = idx; |
| 54 | cmd.cmd_arg = arg; |
| 55 | cmd.resp_type = r_type; |
| 56 | |
| 57 | ret = ops->send_cmd(&cmd); |
| 58 | |
| 59 | if ((ret == 0) && (r_data != NULL)) { |
| 60 | int i; |
| 61 | |
| 62 | for (i = 0; i < 4; i++) { |
| 63 | *r_data = cmd.resp_data[i]; |
| 64 | r_data++; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | if (ret != 0) { |
| 69 | VERBOSE("Send command %u error: %d\n", idx, ret); |
| 70 | } |
| 71 | |
| 72 | return ret; |
| 73 | } |
| 74 | |
| 75 | static int mmc_device_state(void) |
| 76 | { |
| 77 | int retries = MMC_DEFAULT_MAX_RETRIES; |
| 78 | unsigned int resp_data[4]; |
| 79 | |
| 80 | do { |
| 81 | int ret; |
| 82 | |
| 83 | if (retries == 0) { |
| 84 | ERROR("CMD13 failed after %d retries\n", |
| 85 | MMC_DEFAULT_MAX_RETRIES); |
| 86 | return -EIO; |
| 87 | } |
| 88 | |
| 89 | ret = mmc_send_cmd(MMC_CMD(13), rca << RCA_SHIFT_OFFSET, |
| 90 | MMC_RESPONSE_R(1), &resp_data[0]); |
| 91 | if (ret != 0) { |
| 92 | return ret; |
| 93 | } |
| 94 | |
| 95 | if ((resp_data[0] & STATUS_SWITCH_ERROR) != 0U) { |
| 96 | return -EIO; |
| 97 | } |
| 98 | |
| 99 | retries--; |
| 100 | } while ((resp_data[0] & STATUS_READY_FOR_DATA) == 0U); |
| 101 | |
| 102 | return MMC_GET_STATE(resp_data[0]); |
| 103 | } |
| 104 | |
| 105 | static int mmc_set_ext_csd(unsigned int ext_cmd, unsigned int value) |
| 106 | { |
| 107 | int ret; |
| 108 | |
| 109 | ret = mmc_send_cmd(MMC_CMD(6), |
| 110 | EXTCSD_WRITE_BYTES | EXTCSD_CMD(ext_cmd) | |
| 111 | EXTCSD_VALUE(value) | EXTCSD_CMD_SET_NORMAL, |
| 112 | 0, NULL); |
| 113 | if (ret != 0) { |
| 114 | return ret; |
| 115 | } |
| 116 | |
| 117 | do { |
| 118 | ret = mmc_device_state(); |
| 119 | if (ret < 0) { |
| 120 | return ret; |
| 121 | } |
| 122 | } while (ret == MMC_STATE_PRG); |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static int mmc_sd_switch(unsigned int bus_width) |
| 128 | { |
| 129 | int ret; |
| 130 | int retries = MMC_DEFAULT_MAX_RETRIES; |
| 131 | unsigned int scr[2] = { 0 }; |
| 132 | unsigned int bus_width_arg = 0; |
| 133 | |
| 134 | ret = ops->prepare(0, (uintptr_t)&scr, sizeof(scr)); |
| 135 | if (ret != 0) { |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | /* CMD55: Application Specific Command */ |
| 140 | ret = mmc_send_cmd(MMC_CMD(55), rca << RCA_SHIFT_OFFSET, |
| 141 | MMC_RESPONSE_R(1), NULL); |
| 142 | if (ret != 0) { |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | /* ACMD51: SEND_SCR */ |
| 147 | do { |
| 148 | ret = mmc_send_cmd(MMC_ACMD(51), 0, MMC_RESPONSE_R(1), NULL); |
| 149 | if ((ret != 0) && (retries == 0)) { |
| 150 | ERROR("ACMD51 failed after %d retries (ret=%d)\n", |
| 151 | MMC_DEFAULT_MAX_RETRIES, ret); |
| 152 | return ret; |
| 153 | } |
| 154 | |
| 155 | retries--; |
| 156 | } while (ret != 0); |
| 157 | |
| 158 | ret = ops->read(0, (uintptr_t)&scr, sizeof(scr)); |
| 159 | if (ret != 0) { |
| 160 | return ret; |
| 161 | } |
| 162 | |
| 163 | if (((scr[0] & SD_SCR_BUS_WIDTH_4) != 0U) && |
| 164 | (bus_width == MMC_BUS_WIDTH_4)) { |
| 165 | bus_width_arg = 2; |
| 166 | } |
| 167 | |
| 168 | /* CMD55: Application Specific Command */ |
| 169 | ret = mmc_send_cmd(MMC_CMD(55), rca << RCA_SHIFT_OFFSET, |
| 170 | MMC_RESPONSE_R(1), NULL); |
| 171 | if (ret != 0) { |
| 172 | return ret; |
| 173 | } |
| 174 | |
| 175 | /* ACMD6: SET_BUS_WIDTH */ |
| 176 | ret = mmc_send_cmd(MMC_ACMD(6), bus_width_arg, MMC_RESPONSE_R(1), NULL); |
| 177 | if (ret != 0) { |
| 178 | return ret; |
| 179 | } |
| 180 | |
| 181 | do { |
| 182 | ret = mmc_device_state(); |
| 183 | if (ret < 0) { |
| 184 | return ret; |
| 185 | } |
| 186 | } while (ret == MMC_STATE_PRG); |
| 187 | |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | static int mmc_set_ios(unsigned int clk, unsigned int bus_width) |
| 192 | { |
| 193 | int ret; |
| 194 | unsigned int width = bus_width; |
| 195 | |
| 196 | if (mmc_dev_info->mmc_dev_type != MMC_IS_EMMC) { |
| 197 | if (width == MMC_BUS_WIDTH_8) { |
| 198 | WARN("Wrong bus config for SD-card, force to 4\n"); |
| 199 | width = MMC_BUS_WIDTH_4; |
| 200 | } |
| 201 | ret = mmc_sd_switch(width); |
| 202 | if (ret != 0) { |
| 203 | return ret; |
| 204 | } |
| 205 | } else if (mmc_csd.spec_vers == 4U) { |
| 206 | ret = mmc_set_ext_csd(CMD_EXTCSD_BUS_WIDTH, |
| 207 | (unsigned int)width); |
| 208 | if (ret != 0) { |
| 209 | return ret; |
| 210 | } |
| 211 | } else { |
| 212 | VERBOSE("Wrong MMC type or spec version\n"); |
| 213 | } |
| 214 | |
| 215 | return ops->set_ios(clk, width); |
| 216 | } |
| 217 | |
| 218 | static int mmc_fill_device_info(void) |
| 219 | { |
| 220 | unsigned long long c_size; |
| 221 | unsigned int speed_idx; |
| 222 | unsigned int nb_blocks; |
| 223 | unsigned int freq_unit; |
| 224 | int ret; |
| 225 | struct mmc_csd_sd_v2 *csd_sd_v2; |
| 226 | |
| 227 | switch (mmc_dev_info->mmc_dev_type) { |
| 228 | case MMC_IS_EMMC: |
| 229 | mmc_dev_info->block_size = MMC_BLOCK_SIZE; |
| 230 | |
| 231 | ret = ops->prepare(0, (uintptr_t)&mmc_ext_csd, |
| 232 | sizeof(mmc_ext_csd)); |
| 233 | if (ret != 0) { |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | /* MMC CMD8: SEND_EXT_CSD */ |
| 238 | ret = mmc_send_cmd(MMC_CMD(8), 0, MMC_RESPONSE_R(1), NULL); |
| 239 | if (ret != 0) { |
| 240 | return ret; |
| 241 | } |
| 242 | |
| 243 | ret = ops->read(0, (uintptr_t)&mmc_ext_csd, |
| 244 | sizeof(mmc_ext_csd)); |
| 245 | if (ret != 0) { |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | nb_blocks = (mmc_ext_csd[CMD_EXTCSD_SEC_CNT] << 0) | |
| 250 | (mmc_ext_csd[CMD_EXTCSD_SEC_CNT + 1] << 8) | |
| 251 | (mmc_ext_csd[CMD_EXTCSD_SEC_CNT + 2] << 16) | |
| 252 | (mmc_ext_csd[CMD_EXTCSD_SEC_CNT + 3] << 24); |
| 253 | |
| 254 | mmc_dev_info->device_size = (unsigned long long)nb_blocks * |
| 255 | mmc_dev_info->block_size; |
| 256 | |
| 257 | break; |
| 258 | |
| 259 | case MMC_IS_SD: |
| 260 | /* |
| 261 | * Use the same mmc_csd struct, as required fields here |
| 262 | * (READ_BL_LEN, C_SIZE, CSIZE_MULT) are common with eMMC. |
| 263 | */ |
| 264 | mmc_dev_info->block_size = BIT_32(mmc_csd.read_bl_len); |
| 265 | |
| 266 | c_size = ((unsigned long long)mmc_csd.c_size_high << 2U) | |
| 267 | (unsigned long long)mmc_csd.c_size_low; |
| 268 | assert(c_size != 0xFFFU); |
| 269 | |
| 270 | mmc_dev_info->device_size = (c_size + 1U) * |
| 271 | BIT_64(mmc_csd.c_size_mult + 2U) * |
| 272 | mmc_dev_info->block_size; |
| 273 | |
| 274 | break; |
| 275 | |
| 276 | case MMC_IS_SD_HC: |
| 277 | assert(mmc_csd.csd_structure == 1U); |
| 278 | |
| 279 | mmc_dev_info->block_size = MMC_BLOCK_SIZE; |
| 280 | |
| 281 | /* Need to use mmc_csd_sd_v2 struct */ |
| 282 | csd_sd_v2 = (struct mmc_csd_sd_v2 *)&mmc_csd; |
| 283 | c_size = ((unsigned long long)csd_sd_v2->c_size_high << 16) | |
| 284 | (unsigned long long)csd_sd_v2->c_size_low; |
| 285 | |
| 286 | mmc_dev_info->device_size = (c_size + 1U) << MULT_BY_512K_SHIFT; |
| 287 | |
| 288 | break; |
| 289 | |
| 290 | default: |
| 291 | ret = -EINVAL; |
| 292 | break; |
| 293 | } |
| 294 | |
| 295 | if (ret != 0) { |
| 296 | return ret; |
| 297 | } |
| 298 | |
| 299 | speed_idx = (mmc_csd.tran_speed & CSD_TRAN_SPEED_MULT_MASK) >> |
| 300 | CSD_TRAN_SPEED_MULT_SHIFT; |
| 301 | |
| 302 | assert(speed_idx > 0U); |
| 303 | |
| 304 | if (mmc_dev_info->mmc_dev_type == MMC_IS_EMMC) { |
| 305 | mmc_dev_info->max_bus_freq = tran_speed_base[speed_idx]; |
| 306 | } else { |
| 307 | mmc_dev_info->max_bus_freq = sd_tran_speed_base[speed_idx]; |
| 308 | } |
| 309 | |
| 310 | freq_unit = mmc_csd.tran_speed & CSD_TRAN_SPEED_UNIT_MASK; |
| 311 | while (freq_unit != 0U) { |
| 312 | mmc_dev_info->max_bus_freq *= 10U; |
| 313 | --freq_unit; |
| 314 | } |
| 315 | |
| 316 | mmc_dev_info->max_bus_freq *= 10000U; |
| 317 | |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | static int sd_send_op_cond(void) |
| 322 | { |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 323 | int n; |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 324 | unsigned int resp_data[4]; |
| 325 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 326 | for (n = 0; n < SEND_OP_COND_MAX_RETRIES; n++) { |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 327 | int ret; |
| 328 | |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 329 | /* CMD55: Application Specific Command */ |
| 330 | ret = mmc_send_cmd(MMC_CMD(55), 0, MMC_RESPONSE_R(1), NULL); |
| 331 | if (ret != 0) { |
| 332 | return ret; |
| 333 | } |
| 334 | |
| 335 | /* ACMD41: SD_SEND_OP_COND */ |
| 336 | ret = mmc_send_cmd(MMC_ACMD(41), OCR_HCS, MMC_RESPONSE_R(3), |
| 337 | &resp_data[0]); |
| 338 | if (ret != 0) { |
| 339 | return ret; |
| 340 | } |
| 341 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 342 | if ((resp_data[0] & OCR_POWERUP) != 0U) { |
| 343 | mmc_ocr_value = resp_data[0]; |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 344 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 345 | if ((mmc_ocr_value & OCR_HCS) != 0U) { |
| 346 | mmc_dev_info->mmc_dev_type = MMC_IS_SD_HC; |
| 347 | } else { |
| 348 | mmc_dev_info->mmc_dev_type = MMC_IS_SD; |
| 349 | } |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 350 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | mdelay(1); |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 355 | } |
| 356 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 357 | ERROR("ACMD41 failed after %d retries\n", SEND_OP_COND_MAX_RETRIES); |
| 358 | |
| 359 | return -EIO; |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 360 | } |
| 361 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 362 | static int mmc_reset_to_idle(void) |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 363 | { |
| 364 | int ret; |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 365 | |
| 366 | mdelay(1); |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 367 | |
| 368 | /* CMD0: reset to IDLE */ |
| 369 | ret = mmc_send_cmd(MMC_CMD(0), 0, 0, NULL); |
| 370 | if (ret != 0) { |
| 371 | return ret; |
| 372 | } |
| 373 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 374 | mdelay(2); |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 375 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | static int mmc_send_op_cond(void) |
| 380 | { |
| 381 | int ret, n; |
| 382 | unsigned int resp_data[4]; |
| 383 | |
| 384 | mmc_reset_to_idle(); |
| 385 | |
| 386 | for (n = 0; n < SEND_OP_COND_MAX_RETRIES; n++) { |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 387 | ret = mmc_send_cmd(MMC_CMD(1), OCR_SECTOR_MODE | |
| 388 | OCR_VDD_MIN_2V7 | OCR_VDD_MIN_1V7, |
| 389 | MMC_RESPONSE_R(3), &resp_data[0]); |
| 390 | if (ret != 0) { |
| 391 | return ret; |
| 392 | } |
| 393 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 394 | if ((resp_data[0] & OCR_POWERUP) != 0U) { |
| 395 | mmc_ocr_value = resp_data[0]; |
| 396 | return 0; |
| 397 | } |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 398 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 399 | mdelay(1); |
| 400 | } |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 401 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 402 | ERROR("CMD1 failed after %d retries\n", SEND_OP_COND_MAX_RETRIES); |
| 403 | |
| 404 | return -EIO; |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | static int mmc_enumerate(unsigned int clk, unsigned int bus_width) |
| 408 | { |
| 409 | int ret; |
| 410 | unsigned int resp_data[4]; |
| 411 | |
| 412 | ops->init(); |
| 413 | |
Yann Gautier | 15e913d | 2018-08-02 13:46:17 +0200 | [diff] [blame^] | 414 | mmc_reset_to_idle(); |
Yann Gautier | ad71d45 | 2018-07-03 18:32:12 +0200 | [diff] [blame] | 415 | |
| 416 | /* CMD8: Send Interface Condition Command */ |
| 417 | ret = mmc_send_cmd(MMC_CMD(8), VHS_2_7_3_6_V | CMD8_CHECK_PATTERN, |
| 418 | MMC_RESPONSE_R(7), &resp_data[0]); |
| 419 | |
| 420 | if ((ret == 0) && ((resp_data[0] & 0xffU) == CMD8_CHECK_PATTERN)) { |
| 421 | ret = sd_send_op_cond(); |
| 422 | } else { |
| 423 | ret = mmc_send_op_cond(); |
| 424 | } |
| 425 | if (ret != 0) { |
| 426 | return ret; |
| 427 | } |
| 428 | |
| 429 | /* CMD2: Card Identification */ |
| 430 | ret = mmc_send_cmd(MMC_CMD(2), 0, MMC_RESPONSE_R(2), NULL); |
| 431 | if (ret != 0) { |
| 432 | return ret; |
| 433 | } |
| 434 | |
| 435 | /* CMD3: Set Relative Address */ |
| 436 | if (mmc_dev_info->mmc_dev_type == MMC_IS_EMMC) { |
| 437 | rca = MMC_FIX_RCA; |
| 438 | ret = mmc_send_cmd(MMC_CMD(3), rca << RCA_SHIFT_OFFSET, |
| 439 | MMC_RESPONSE_R(1), NULL); |
| 440 | if (ret != 0) { |
| 441 | return ret; |
| 442 | } |
| 443 | } else { |
| 444 | ret = mmc_send_cmd(MMC_CMD(3), 0, |
| 445 | MMC_RESPONSE_R(6), &resp_data[0]); |
| 446 | if (ret != 0) { |
| 447 | return ret; |
| 448 | } |
| 449 | |
| 450 | rca = (resp_data[0] & 0xFFFF0000U) >> 16; |
| 451 | } |
| 452 | |
| 453 | /* CMD9: CSD Register */ |
| 454 | ret = mmc_send_cmd(MMC_CMD(9), rca << RCA_SHIFT_OFFSET, |
| 455 | MMC_RESPONSE_R(2), &resp_data[0]); |
| 456 | if (ret != 0) { |
| 457 | return ret; |
| 458 | } |
| 459 | |
| 460 | memcpy(&mmc_csd, &resp_data, sizeof(resp_data)); |
| 461 | |
| 462 | /* CMD7: Select Card */ |
| 463 | ret = mmc_send_cmd(MMC_CMD(7), rca << RCA_SHIFT_OFFSET, |
| 464 | MMC_RESPONSE_R(1), NULL); |
| 465 | if (ret != 0) { |
| 466 | return ret; |
| 467 | } |
| 468 | |
| 469 | do { |
| 470 | ret = mmc_device_state(); |
| 471 | if (ret < 0) { |
| 472 | return ret; |
| 473 | } |
| 474 | } while (ret != MMC_STATE_TRAN); |
| 475 | |
| 476 | ret = mmc_fill_device_info(); |
| 477 | if (ret != 0) { |
| 478 | return ret; |
| 479 | } |
| 480 | |
| 481 | return mmc_set_ios(clk, bus_width); |
| 482 | } |
| 483 | |
| 484 | size_t mmc_read_blocks(unsigned int lba, uintptr_t buf, size_t size) |
| 485 | { |
| 486 | int ret; |
| 487 | unsigned int cmd_idx, cmd_arg; |
| 488 | |
| 489 | assert((ops != NULL) && |
| 490 | (ops->read != NULL) && |
| 491 | (size != 0U) && |
| 492 | ((size & MMC_BLOCK_MASK) == 0U)); |
| 493 | |
| 494 | ret = ops->prepare(lba, buf, size); |
| 495 | if (ret != 0) { |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | if (is_cmd23_enabled()) { |
| 500 | /* Set block count */ |
| 501 | ret = mmc_send_cmd(MMC_CMD(23), size / MMC_BLOCK_SIZE, |
| 502 | MMC_RESPONSE_R(1), NULL); |
| 503 | if (ret != 0) { |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | cmd_idx = MMC_CMD(18); |
| 508 | } else { |
| 509 | if (size > MMC_BLOCK_SIZE) { |
| 510 | cmd_idx = MMC_CMD(18); |
| 511 | } else { |
| 512 | cmd_idx = MMC_CMD(17); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | if (((mmc_ocr_value & OCR_ACCESS_MODE_MASK) == OCR_BYTE_MODE) && |
| 517 | (mmc_dev_info->mmc_dev_type != MMC_IS_SD_HC)) { |
| 518 | cmd_arg = lba * MMC_BLOCK_SIZE; |
| 519 | } else { |
| 520 | cmd_arg = lba; |
| 521 | } |
| 522 | |
| 523 | ret = mmc_send_cmd(cmd_idx, cmd_arg, MMC_RESPONSE_R(1), NULL); |
| 524 | if (ret != 0) { |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | ret = ops->read(lba, buf, size); |
| 529 | if (ret != 0) { |
| 530 | return 0; |
| 531 | } |
| 532 | |
| 533 | /* Wait buffer empty */ |
| 534 | do { |
| 535 | ret = mmc_device_state(); |
| 536 | if (ret < 0) { |
| 537 | return 0; |
| 538 | } |
| 539 | } while ((ret != MMC_STATE_TRAN) && (ret != MMC_STATE_DATA)); |
| 540 | |
| 541 | if (!is_cmd23_enabled() && (size > MMC_BLOCK_SIZE)) { |
| 542 | ret = mmc_send_cmd(MMC_CMD(12), 0, 0, NULL); |
| 543 | if (ret != 0) { |
| 544 | return 0; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | return size; |
| 549 | } |
| 550 | |
| 551 | size_t mmc_write_blocks(unsigned int lba, const uintptr_t buf, size_t size) |
| 552 | { |
| 553 | int ret; |
| 554 | unsigned int cmd_idx, cmd_arg; |
| 555 | |
| 556 | assert((ops != NULL) && |
| 557 | (ops->write != NULL) && |
| 558 | (size != 0U) && |
| 559 | ((buf & MMC_BLOCK_MASK) == 0U) && |
| 560 | ((size & MMC_BLOCK_MASK) == 0U)); |
| 561 | |
| 562 | ret = ops->prepare(lba, buf, size); |
| 563 | if (ret != 0) { |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | if (is_cmd23_enabled()) { |
| 568 | /* Set block count */ |
| 569 | ret = mmc_send_cmd(MMC_CMD(23), size / MMC_BLOCK_SIZE, |
| 570 | MMC_RESPONSE_R(1), NULL); |
| 571 | if (ret != 0) { |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | cmd_idx = MMC_CMD(25); |
| 576 | } else { |
| 577 | if (size > MMC_BLOCK_SIZE) { |
| 578 | cmd_idx = MMC_CMD(25); |
| 579 | } else { |
| 580 | cmd_idx = MMC_CMD(24); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | if ((mmc_ocr_value & OCR_ACCESS_MODE_MASK) == OCR_BYTE_MODE) { |
| 585 | cmd_arg = lba * MMC_BLOCK_SIZE; |
| 586 | } else { |
| 587 | cmd_arg = lba; |
| 588 | } |
| 589 | |
| 590 | ret = mmc_send_cmd(cmd_idx, cmd_arg, MMC_RESPONSE_R(1), NULL); |
| 591 | if (ret != 0) { |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | ret = ops->write(lba, buf, size); |
| 596 | if (ret != 0) { |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | /* Wait buffer empty */ |
| 601 | do { |
| 602 | ret = mmc_device_state(); |
| 603 | if (ret < 0) { |
| 604 | return 0; |
| 605 | } |
| 606 | } while ((ret != MMC_STATE_TRAN) && (ret != MMC_STATE_RCV)); |
| 607 | |
| 608 | if (!is_cmd23_enabled() && (size > MMC_BLOCK_SIZE)) { |
| 609 | ret = mmc_send_cmd(MMC_CMD(12), 0, 0, NULL); |
| 610 | if (ret != 0) { |
| 611 | return 0; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | return size; |
| 616 | } |
| 617 | |
| 618 | size_t mmc_erase_blocks(unsigned int lba, size_t size) |
| 619 | { |
| 620 | int ret; |
| 621 | |
| 622 | assert(ops != NULL); |
| 623 | assert((size != 0U) && ((size & MMC_BLOCK_MASK) == 0U)); |
| 624 | |
| 625 | ret = mmc_send_cmd(MMC_CMD(35), lba, MMC_RESPONSE_R(1), NULL); |
| 626 | if (ret != 0) { |
| 627 | return 0; |
| 628 | } |
| 629 | |
| 630 | ret = mmc_send_cmd(MMC_CMD(36), lba + (size / MMC_BLOCK_SIZE) - 1U, |
| 631 | MMC_RESPONSE_R(1), NULL); |
| 632 | if (ret != 0) { |
| 633 | return 0; |
| 634 | } |
| 635 | |
| 636 | ret = mmc_send_cmd(MMC_CMD(38), lba, MMC_RESPONSE_R(0x1B), NULL); |
| 637 | if (ret != 0) { |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | do { |
| 642 | ret = mmc_device_state(); |
| 643 | if (ret < 0) { |
| 644 | return 0; |
| 645 | } |
| 646 | } while (ret != MMC_STATE_TRAN); |
| 647 | |
| 648 | return size; |
| 649 | } |
| 650 | |
| 651 | static inline void mmc_rpmb_enable(void) |
| 652 | { |
| 653 | mmc_set_ext_csd(CMD_EXTCSD_PARTITION_CONFIG, |
| 654 | PART_CFG_BOOT_PARTITION1_ENABLE | |
| 655 | PART_CFG_PARTITION1_ACCESS); |
| 656 | } |
| 657 | |
| 658 | static inline void mmc_rpmb_disable(void) |
| 659 | { |
| 660 | mmc_set_ext_csd(CMD_EXTCSD_PARTITION_CONFIG, |
| 661 | PART_CFG_BOOT_PARTITION1_ENABLE); |
| 662 | } |
| 663 | |
| 664 | size_t mmc_rpmb_read_blocks(unsigned int lba, uintptr_t buf, size_t size) |
| 665 | { |
| 666 | size_t size_read; |
| 667 | |
| 668 | mmc_rpmb_enable(); |
| 669 | size_read = mmc_read_blocks(lba, buf, size); |
| 670 | mmc_rpmb_disable(); |
| 671 | |
| 672 | return size_read; |
| 673 | } |
| 674 | |
| 675 | size_t mmc_rpmb_write_blocks(unsigned int lba, const uintptr_t buf, size_t size) |
| 676 | { |
| 677 | size_t size_written; |
| 678 | |
| 679 | mmc_rpmb_enable(); |
| 680 | size_written = mmc_write_blocks(lba, buf, size); |
| 681 | mmc_rpmb_disable(); |
| 682 | |
| 683 | return size_written; |
| 684 | } |
| 685 | |
| 686 | size_t mmc_rpmb_erase_blocks(unsigned int lba, size_t size) |
| 687 | { |
| 688 | size_t size_erased; |
| 689 | |
| 690 | mmc_rpmb_enable(); |
| 691 | size_erased = mmc_erase_blocks(lba, size); |
| 692 | mmc_rpmb_disable(); |
| 693 | |
| 694 | return size_erased; |
| 695 | } |
| 696 | |
| 697 | int mmc_init(const struct mmc_ops *ops_ptr, unsigned int clk, |
| 698 | unsigned int width, unsigned int flags, |
| 699 | struct mmc_device_info *device_info) |
| 700 | { |
| 701 | assert((ops_ptr != NULL) && |
| 702 | (ops_ptr->init != NULL) && |
| 703 | (ops_ptr->send_cmd != NULL) && |
| 704 | (ops_ptr->set_ios != NULL) && |
| 705 | (ops_ptr->prepare != NULL) && |
| 706 | (ops_ptr->read != NULL) && |
| 707 | (ops_ptr->write != NULL) && |
| 708 | (device_info != NULL) && |
| 709 | (clk != 0) && |
| 710 | ((width == MMC_BUS_WIDTH_1) || |
| 711 | (width == MMC_BUS_WIDTH_4) || |
| 712 | (width == MMC_BUS_WIDTH_8) || |
| 713 | (width == MMC_BUS_WIDTH_DDR_4) || |
| 714 | (width == MMC_BUS_WIDTH_DDR_8))); |
| 715 | |
| 716 | ops = ops_ptr; |
| 717 | mmc_flags = flags; |
| 718 | mmc_dev_info = device_info; |
| 719 | |
| 720 | return mmc_enumerate(clk, width); |
| 721 | } |