Angel Pons | 8a3453f | 2020-04-02 23:48:19 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 2 | #include <stdint.h> |
| 3 | #include <string.h> |
| 4 | #include <spi-generic.h> |
| 5 | #include <spi_sdcard.h> |
| 6 | #include <crc_byte.h> |
| 7 | #include <commonlib/helpers.h> |
| 8 | #include <console/console.h> |
| 9 | |
Arthur Heymans | e19d33b | 2023-05-19 12:16:07 +0200 | [diff] [blame] | 10 | #define SPI_SDCARD_DEBUG 0 |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 11 | |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 12 | #define dprintk(fmt, args...) \ |
Arthur Heymans | e19d33b | 2023-05-19 12:16:07 +0200 | [diff] [blame] | 13 | do { if (SPI_SDCARD_DEBUG) { printk(BIOS_DEBUG, fmt, ##args); }} while (0) |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 14 | |
| 15 | #define SDCARD_TYPE_SDSC 1 |
| 16 | #define SDCARD_TYPE_SDHC 2 |
| 17 | #define SDCARD_TYPE_SDXC 3 |
| 18 | |
| 19 | /* CMD */ |
| 20 | #define GO_IDLE_STATE 0 |
| 21 | #define SEND_OP_COND 1 |
| 22 | #define SWITCH_FUNC 6 |
| 23 | #define SEND_IF_COND 8 |
| 24 | #define SEND_CSD 9 |
| 25 | #define SEND_CID 10 |
| 26 | #define STOP_TRANSMISSION 12 |
| 27 | #define SEND_STATUS 13 |
| 28 | #define SET_BLOCKLEN 16 |
| 29 | #define READ_SINGLE_BLOCK 17 |
| 30 | #define READ_MULTIPLEBLOCK 18 |
| 31 | #define WRITE_BLOCK 24 |
| 32 | #define WRITE_MULTIPLEBLOCK 25 |
| 33 | #define PROGRAM_CSD 27 |
| 34 | #define SET_WRITE_PROT 28 |
| 35 | #define CLR_WRITE_PROT 29 |
| 36 | #define SEND_WRITE_PROT 30 |
| 37 | #define ERASE_WR_BLK_START_ADDR 32 |
| 38 | #define ERASE_WR_BLK_END_ADDR 33 |
| 39 | #define ERASE 38 |
| 40 | #define LOCK_UNLOCK 42 |
| 41 | #define APP_CMD 55 |
| 42 | #define GEN_CMD 56 |
| 43 | #define READ_OCR 58 |
| 44 | #define CRC_ON_OFF 59 |
| 45 | |
| 46 | /* ACMD */ |
| 47 | #define SD_STATUS 13 |
| 48 | #define SEND_NUM_WR_BLOCKS 22 |
| 49 | #define SET_WR_BLK_ERASE_COUNT 23 |
| 50 | #define SD_SEND_OP_COND 41 |
| 51 | #define SET_CLR_CARD_DETECT 42 |
| 52 | #define SEND_SCR 51 |
| 53 | |
| 54 | /* control tokens */ |
| 55 | #define CT_BLOCK_START 0xfe |
| 56 | #define CT_MULTIPLE_BLOCK_START 0xfc |
| 57 | #define CT_MULTIPLE_BLOCK_STOP 0xfd |
| 58 | #define CT_RESPONSE_MASK 0x1f |
| 59 | #define CT_RESPONSE_ACCEPTED 0x05 |
| 60 | #define CT_RESPONSE_REJECTED_CRC 0x0b |
| 61 | #define CT_RESPONSE_REJECTED_WRITE_ERR 0x0d |
| 62 | |
| 63 | /* response type */ |
| 64 | #define RSP_R1 0 |
| 65 | #define RSP_R1b 1 |
| 66 | #define RSP_R2 2 |
| 67 | #define RSP_R3 3 |
| 68 | #define RSP_R4 4 |
| 69 | #define RSP_R5 5 |
| 70 | #define RSP_R7 7 |
| 71 | |
| 72 | #define RSP_ERR_CARD_IS_LOCKED (1 << 0) |
| 73 | #define RSP_ERR_WP_ERASE_SKIP (1 << 1) |
| 74 | #define RSP_ERR_GENERAL (1 << 2) |
| 75 | #define RSP_ERR_CC (1 << 3) |
| 76 | #define RSP_ERR_ECC (1 << 4) |
| 77 | #define RSP_ERR_WP_VIOLATION (1 << 5) |
| 78 | #define RSP_ERR_ERASE_PARAM (1 << 6) |
| 79 | #define RSP_ERR_OUT_OF_RANGE (1 << 7) |
| 80 | #define RSP_ERR_IN_IDLE (1 << 8) |
| 81 | #define RSP_ERR_ERASE_RESET (1 << 9) |
| 82 | #define RSP_ERR_ILLEGAL_COMMAND (1 << 10) |
| 83 | #define RSP_ERR_COM_CRC (1 << 11) |
| 84 | #define RSP_ERR_ERASE_SEQUENCE (1 << 12) |
| 85 | #define RSP_ERR_ADDRESS (1 << 13) |
| 86 | #define RSP_ERR_PARAMETER (1 << 14) |
| 87 | |
| 88 | #define BLOCK_SIZE 512 |
| 89 | |
| 90 | static unsigned long long extract_bits(uint8_t *buff, |
| 91 | int width, int start, int end) |
| 92 | { |
| 93 | unsigned long long r = 0; |
| 94 | for (int i = end; i >= start; i--) { |
| 95 | int bitpos = width - i - 1; |
| 96 | int b = bitpos / 8; |
| 97 | int shift = 7 - bitpos % 8; |
| 98 | r = (r << 1) | ((buff[b] >> shift) & 1); |
| 99 | } |
| 100 | return r; |
| 101 | } |
| 102 | |
| 103 | static void spi_sdcard_enable_cs(const struct spi_sdcard *card) |
| 104 | { |
| 105 | spi_claim_bus(&card->slave); |
| 106 | } |
| 107 | |
| 108 | static void spi_sdcard_disable_cs(const struct spi_sdcard *card) |
| 109 | { |
| 110 | spi_release_bus(&card->slave); |
| 111 | } |
| 112 | |
| 113 | static void spi_sdcard_sendbyte(const struct spi_sdcard *card, uint8_t b) |
| 114 | { |
| 115 | dprintk("sdcard -> %#x\n", b); |
| 116 | spi_xfer(&card->slave, &b, 1, NULL, 0); |
| 117 | } |
| 118 | |
| 119 | static uint8_t spi_sdcard_recvbyte(const struct spi_sdcard *card) |
| 120 | { |
| 121 | uint8_t b, t = 0xff; |
| 122 | spi_xfer(&card->slave, &t, 1, &b, 1); |
| 123 | dprintk("sdcard <- %#x\n", b); |
| 124 | return b; |
| 125 | } |
| 126 | |
| 127 | static uint8_t spi_sdcard_calculate_command_crc(uint8_t cmd, uint32_t argument) |
| 128 | { |
| 129 | uint8_t crc = 0; |
| 130 | crc = crc7_byte(crc, (cmd | 0x40) & 0x7f); |
| 131 | crc = crc7_byte(crc, (argument >> (3 * 8)) & 0xff); |
| 132 | crc = crc7_byte(crc, (argument >> (2 * 8)) & 0xff); |
| 133 | crc = crc7_byte(crc, (argument >> (1 * 8)) & 0xff); |
| 134 | crc = crc7_byte(crc, (argument >> (0 * 8)) & 0xff); |
| 135 | return crc | 1; |
| 136 | } |
| 137 | |
| 138 | static int lookup_cmd_response_type(uint8_t cmd) |
| 139 | { |
| 140 | switch (cmd) { |
| 141 | case GO_IDLE_STATE: |
| 142 | case SEND_OP_COND: |
| 143 | case SWITCH_FUNC: |
| 144 | case SEND_CSD: |
| 145 | case SEND_CID: |
| 146 | case SET_BLOCKLEN: |
| 147 | case READ_SINGLE_BLOCK: |
| 148 | case READ_MULTIPLEBLOCK: |
| 149 | case WRITE_BLOCK: |
| 150 | case WRITE_MULTIPLEBLOCK: |
| 151 | case PROGRAM_CSD: |
| 152 | case SEND_WRITE_PROT: |
| 153 | case ERASE_WR_BLK_START_ADDR: |
| 154 | case ERASE_WR_BLK_END_ADDR: |
| 155 | case LOCK_UNLOCK: |
| 156 | case APP_CMD: |
| 157 | case GEN_CMD: |
| 158 | case CRC_ON_OFF: |
| 159 | return RSP_R1; |
| 160 | case STOP_TRANSMISSION: |
| 161 | case SET_WRITE_PROT: |
| 162 | case CLR_WRITE_PROT: |
| 163 | case ERASE: |
| 164 | return RSP_R1b; |
| 165 | case SEND_STATUS: |
| 166 | return RSP_R2; |
| 167 | case READ_OCR: |
| 168 | return RSP_R3; |
| 169 | case SEND_IF_COND: |
| 170 | return RSP_R7; |
| 171 | } |
| 172 | return -1; |
| 173 | } |
| 174 | |
| 175 | static int lookup_acmd_response_type(uint8_t cmd) |
| 176 | { |
| 177 | switch (cmd) { |
| 178 | case SEND_NUM_WR_BLOCKS: |
| 179 | case SET_WR_BLK_ERASE_COUNT: |
| 180 | case SD_SEND_OP_COND: |
| 181 | case SET_CLR_CARD_DETECT: |
| 182 | case SEND_SCR: |
| 183 | return RSP_R1; |
| 184 | case SD_STATUS: |
| 185 | return RSP_R2; |
| 186 | } |
| 187 | return -1; |
| 188 | } |
| 189 | |
| 190 | static int lookup_response_length(int response_type) |
| 191 | { |
| 192 | switch (response_type) { |
| 193 | case RSP_R1: |
| 194 | case RSP_R1b: |
| 195 | return 1; |
| 196 | case RSP_R2: |
| 197 | return 2; |
| 198 | case RSP_R3: |
| 199 | case RSP_R7: |
| 200 | return 5; |
| 201 | } |
| 202 | return -1; |
| 203 | } |
| 204 | |
| 205 | static int response_resolve(int response_type, uint8_t *response, |
| 206 | uint32_t *out_register) |
| 207 | { |
Bill XIE | ac136250 | 2022-07-08 16:53:21 +0800 | [diff] [blame] | 208 | __maybe_unused static const char * const sd_err[] = { |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 209 | "Card is locked", |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 210 | "wp erase skip | lock/unlock cmd failed", |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 211 | "error", |
| 212 | "CC error", |
| 213 | "card err failed", |
| 214 | "wp violation", |
| 215 | "erase param", |
| 216 | "out of range | csd overwrite", |
| 217 | "in idle state", |
| 218 | "erase reset", |
| 219 | "illegal command", |
| 220 | "com crc error", |
| 221 | "erase sequence error", |
| 222 | "address error", |
| 223 | "parameter error" |
| 224 | }; |
| 225 | uint8_t r1 = 0, r2 = 0; |
| 226 | |
| 227 | if ((response_type == RSP_R1) |
| 228 | || (response_type == RSP_R1b) |
| 229 | || (response_type == RSP_R2) |
| 230 | || (response_type == RSP_R3) |
| 231 | || (response_type == RSP_R7)) |
| 232 | r1 = response[0]; |
| 233 | |
| 234 | if (response_type == RSP_R2) |
| 235 | r2 = response[1]; |
| 236 | |
| 237 | if (((response_type == RSP_R3) || (response_type == RSP_R7)) |
| 238 | && (out_register != NULL)) { |
| 239 | *out_register = 0; |
| 240 | *out_register = (*out_register << 8) | response[1]; |
| 241 | *out_register = (*out_register << 8) | response[2]; |
| 242 | *out_register = (*out_register << 8) | response[3]; |
| 243 | *out_register = (*out_register << 8) | response[4]; |
| 244 | } |
| 245 | |
| 246 | if (r1 != 0 || r2 != 0) { |
| 247 | int i = 0; |
| 248 | uint16_t r = (r1 << 8) | r2; |
| 249 | while (r) { |
| 250 | if (r & 1) |
| 251 | dprintk("SDCARD ERROR: %s\n", sd_err[i]); |
| 252 | r = r >> 1; |
| 253 | i++; |
| 254 | } |
| 255 | return (r1 << 8) | r2; |
| 256 | } |
| 257 | |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | static int spi_sdcard_do_command_help(const struct spi_sdcard *card, |
| 262 | int is_acmd, |
| 263 | uint8_t cmd, |
| 264 | uint32_t argument, |
| 265 | uint32_t *out_register) |
| 266 | { |
| 267 | int ret, type, length, wait; |
| 268 | uint8_t crc, c, response[5]; |
| 269 | |
| 270 | /* calculate crc for command */ |
| 271 | crc = spi_sdcard_calculate_command_crc(cmd, argument); |
| 272 | |
| 273 | if (is_acmd) |
| 274 | dprintk("\nsdcard execute acmd%d, argument = %#x, crc = %#x\n", |
| 275 | cmd, argument, crc); |
| 276 | else |
| 277 | dprintk("\nsdcard execute cmd%d, argument = %#x, crc = %#x\n", |
| 278 | cmd, argument, crc); |
| 279 | |
| 280 | /* lookup response type of command */ |
| 281 | if (!is_acmd) |
| 282 | type = lookup_cmd_response_type(cmd); |
| 283 | else |
| 284 | type = lookup_acmd_response_type(cmd); |
| 285 | |
| 286 | /* lookup response length of command */ |
| 287 | length = lookup_response_length(type); |
| 288 | |
| 289 | /* enable cs */ |
| 290 | spi_sdcard_enable_cs(card); |
| 291 | |
| 292 | /* just delay 8 clocks */ |
| 293 | spi_sdcard_recvbyte(card); |
| 294 | |
| 295 | /* send command */ |
| 296 | spi_sdcard_sendbyte(card, (cmd | 0x40) & 0x7f); |
| 297 | /* send argument */ |
| 298 | spi_sdcard_sendbyte(card, (argument >> (8 * 3)) & 0xff); |
| 299 | spi_sdcard_sendbyte(card, (argument >> (8 * 2)) & 0xff); |
| 300 | spi_sdcard_sendbyte(card, (argument >> (8 * 1)) & 0xff); |
| 301 | spi_sdcard_sendbyte(card, (argument >> (8 * 0)) & 0xff); |
| 302 | /* send crc */ |
| 303 | spi_sdcard_sendbyte(card, crc); |
| 304 | |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 305 | /* waiting for response */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 306 | wait = 0xffff; |
| 307 | while (((c = spi_sdcard_recvbyte(card)) & 0x80) && --wait) |
| 308 | ; |
| 309 | if (!wait) { |
| 310 | spi_sdcard_disable_cs(card); |
| 311 | return -1; /* timeout */ |
| 312 | } |
| 313 | |
| 314 | /* obtain response */ |
| 315 | for (int i = 0; i < length; i++) { |
| 316 | response[i] = c; |
| 317 | c = spi_sdcard_recvbyte(card); |
| 318 | } |
| 319 | |
| 320 | if (type == RSP_R1b) { |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 321 | /* waiting done */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 322 | wait = 0xffffff; |
| 323 | while (c == 0 && --wait) |
| 324 | c = spi_sdcard_recvbyte(card); |
| 325 | if (!wait) { |
| 326 | spi_sdcard_disable_cs(card); |
| 327 | return -1; /* timeout */ |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | spi_sdcard_disable_cs(card); |
| 332 | |
| 333 | ret = response_resolve(type, response, out_register); |
| 334 | |
| 335 | return ret; |
| 336 | } |
| 337 | |
| 338 | static int spi_sdcard_do_command(const struct spi_sdcard *card, |
| 339 | uint8_t cmd, |
| 340 | uint32_t argument, |
| 341 | uint32_t *out_register) |
| 342 | { |
| 343 | return spi_sdcard_do_command_help(card, 0, cmd, argument, out_register); |
| 344 | } |
| 345 | |
| 346 | static int spi_sdcard_do_app_command(const struct spi_sdcard *card, |
| 347 | uint8_t cmd, |
| 348 | uint32_t argument, |
| 349 | uint32_t *out_register) |
| 350 | { |
| 351 | /* CMD55 */ |
John Zhao | 19e22f5 | 2020-09-22 11:12:37 -0700 | [diff] [blame] | 352 | if (spi_sdcard_do_command(card, APP_CMD, 0, NULL)) |
| 353 | return -1; |
| 354 | |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 355 | return spi_sdcard_do_command_help(card, 1, cmd, argument, out_register); |
| 356 | } |
| 357 | |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 358 | size_t spi_sdcard_size(const struct spi_sdcard *card) |
| 359 | { |
| 360 | int wait; |
| 361 | uint8_t csd[16]; |
| 362 | uint16_t c = 0; |
| 363 | |
| 364 | /* CMD9, send csd (128bits register) */ |
| 365 | if (spi_sdcard_do_command(card, SEND_CSD, 0, NULL)) |
| 366 | return -1; |
| 367 | |
| 368 | /* enable CS */ |
| 369 | spi_sdcard_enable_cs(card); |
| 370 | |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 371 | /* waiting start block token */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 372 | wait = 0xffff; |
| 373 | while ((spi_sdcard_recvbyte(card) != CT_BLOCK_START) && --wait) |
| 374 | ; |
| 375 | if (!wait) { |
| 376 | spi_sdcard_disable_cs(card); |
| 377 | return -1; |
| 378 | } |
| 379 | |
| 380 | /* receive data */ |
| 381 | for (int i = 0; i < 16; i++) { |
| 382 | csd[i] = spi_sdcard_recvbyte(card); |
| 383 | c = crc16_byte(c, csd[i]); |
| 384 | } |
| 385 | |
| 386 | /* receive crc and verify check sum */ |
| 387 | if (((c >> 8) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 388 | spi_sdcard_disable_cs(card); |
| 389 | return -1; |
| 390 | } |
| 391 | if (((c >> 0) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 392 | spi_sdcard_disable_cs(card); |
| 393 | return -1; |
| 394 | } |
| 395 | |
| 396 | /* disable cs */ |
| 397 | spi_sdcard_disable_cs(card); |
| 398 | |
| 399 | if (extract_bits(csd, 128, 126, 127) == 0) { |
| 400 | /* csd version 1.0 */ |
| 401 | size_t c_size = extract_bits(csd, 128, 62, 73); |
| 402 | size_t mult = extract_bits(csd, 128, 47, 49); |
| 403 | size_t read_bl_len = extract_bits(csd, 128, 80, 83); |
| 404 | return (c_size + 1) * mult * (1 << read_bl_len); |
| 405 | } |
| 406 | |
| 407 | if (extract_bits(csd, 128, 126, 127) == 1) { |
| 408 | /* csd version 2.0 */ |
| 409 | size_t c_size = extract_bits(csd, 128, 48, 69); |
| 410 | return (c_size + 1) * 512 * 1024; |
| 411 | } |
| 412 | |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | int spi_sdcard_init(struct spi_sdcard *card, |
| 417 | const unsigned int bus, const unsigned int cs) |
| 418 | { |
| 419 | int resolve, wait; |
| 420 | uint32_t ocr; |
| 421 | |
| 422 | /* initialize spi controller */ |
| 423 | spi_setup_slave(bus, cs, &card->slave); |
| 424 | |
| 425 | /* must wait at least 74 clock ticks after reset |
| 426 | * disable cs pin to enter spi mode */ |
| 427 | spi_sdcard_disable_cs(card); |
| 428 | for (int i = 0; i < 10; i++) |
| 429 | spi_sdcard_sendbyte(card, 0xff); |
| 430 | |
| 431 | /* CMD0, reset sdcard */ |
| 432 | wait = 0xffff; |
| 433 | while ((spi_sdcard_do_command(card, GO_IDLE_STATE, 0, NULL) |
| 434 | != RSP_ERR_IN_IDLE) && --wait) |
| 435 | ; |
| 436 | if (!wait) |
| 437 | return -1; /* timeout */ |
| 438 | |
| 439 | /* CMD8 */ |
| 440 | resolve = spi_sdcard_do_command(card, SEND_IF_COND, 0x1aa, NULL); |
| 441 | if (resolve & RSP_ERR_ILLEGAL_COMMAND) { |
| 442 | /* ACMD41, initialize card */ |
| 443 | wait = 0xffff; |
| 444 | while ((resolve = spi_sdcard_do_app_command(card, |
| 445 | SD_SEND_OP_COND, 0, NULL)) && --wait) |
| 446 | ; |
| 447 | if ((resolve & RSP_ERR_ILLEGAL_COMMAND) || !wait) { |
| 448 | wait = 0xffff; |
| 449 | /* CMD1, initialize card for 2.1mm SD Memory Card */ |
| 450 | while (spi_sdcard_do_app_command(card, SEND_OP_COND, |
| 451 | 0, NULL) && --wait) |
| 452 | ; |
| 453 | if (!wait) |
| 454 | return -1; /* unknown card */ |
| 455 | } |
| 456 | } else { |
| 457 | /* ACMD41, initialize card */ |
| 458 | wait = 0xffff; |
| 459 | while (spi_sdcard_do_app_command(card, SD_SEND_OP_COND, |
| 460 | 0x40000000, NULL) && --wait) |
| 461 | ; |
| 462 | if (!wait) |
| 463 | return -1; |
| 464 | } |
| 465 | |
| 466 | /* CMD58, read ocr register */ |
| 467 | if (spi_sdcard_do_command(card, READ_OCR, 0, &ocr)) |
| 468 | return -1; |
| 469 | |
| 470 | /* CMD16, set block length to 512 bytes */ |
| 471 | if (spi_sdcard_do_command(card, SET_BLOCKLEN, 512, NULL)) |
| 472 | return -1; |
| 473 | |
| 474 | /* CCS is bit30 of ocr register |
| 475 | * CCS = 0 -> SDSC |
| 476 | * CCS = 1 -> SDHC/SDXC |
| 477 | * */ |
| 478 | if ((ocr & 0x40000000) == 0) |
| 479 | card->type = SDCARD_TYPE_SDSC; |
| 480 | else { |
| 481 | /* size > 32G -> SDXC */ |
| 482 | if (spi_sdcard_size(card) > 32LL * 1024 * 1024 * 1024) |
| 483 | card->type = SDCARD_TYPE_SDXC; |
| 484 | else |
| 485 | card->type = SDCARD_TYPE_SDHC; |
| 486 | } |
| 487 | |
| 488 | return 0; |
| 489 | } |
| 490 | |
| 491 | int spi_sdcard_single_read(const struct spi_sdcard *card, |
| 492 | size_t block_address, |
| 493 | void *buff) |
| 494 | { |
| 495 | int wait; |
| 496 | uint16_t c = 0; |
| 497 | |
| 498 | if (card->type == SDCARD_TYPE_SDSC) |
| 499 | block_address = block_address * 512; |
| 500 | |
| 501 | /* CMD17, start single block read */ |
| 502 | if (spi_sdcard_do_command(card, READ_SINGLE_BLOCK, block_address, NULL)) |
| 503 | return -1; |
| 504 | |
| 505 | /* enable cs */ |
| 506 | spi_sdcard_enable_cs(card); |
| 507 | |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 508 | /* waiting start block token */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 509 | wait = 0xffff; |
| 510 | while ((spi_sdcard_recvbyte(card) != CT_BLOCK_START) && --wait) |
| 511 | ; |
| 512 | if (!wait) { /* timeout */ |
| 513 | spi_sdcard_disable_cs(card); |
| 514 | return -1; |
| 515 | } |
| 516 | |
| 517 | /* receive data */ |
| 518 | for (int i = 0; i < 512; i++) { |
| 519 | ((uint8_t *)buff)[i] = spi_sdcard_recvbyte(card); |
| 520 | c = crc16_byte(c, ((uint8_t *)buff)[i]); |
| 521 | } |
| 522 | |
| 523 | /* receive crc and verify check sum */ |
| 524 | if (((c >> 8) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 525 | spi_sdcard_disable_cs(card); |
| 526 | return -1; |
| 527 | } |
| 528 | if (((c >> 0) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 529 | spi_sdcard_disable_cs(card); |
| 530 | return -1; |
| 531 | } |
| 532 | |
| 533 | /* disable cs */ |
| 534 | spi_sdcard_disable_cs(card); |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | int spi_sdcard_multiple_read(const struct spi_sdcard *card, |
| 540 | size_t start_block_address, |
| 541 | size_t end_block_address, |
| 542 | void *buff) |
| 543 | { |
| 544 | int wait; |
| 545 | int block_num = end_block_address - start_block_address + 1; |
| 546 | if (card->type == SDCARD_TYPE_SDSC) { |
| 547 | start_block_address = start_block_address * 512; |
| 548 | end_block_address = end_block_address * 512; |
| 549 | } |
| 550 | /* CMD18, start multiple block read */ |
| 551 | if (spi_sdcard_do_command(card, |
| 552 | READ_MULTIPLEBLOCK, start_block_address, NULL)) |
| 553 | return -1; |
| 554 | |
| 555 | /* enable cs */ |
| 556 | spi_sdcard_enable_cs(card); |
| 557 | |
| 558 | for (int i = 0; i < block_num; i++) { |
| 559 | uint16_t c = 0; |
| 560 | |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 561 | /* waiting start block token */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 562 | wait = 0xffff; |
| 563 | while ((spi_sdcard_recvbyte(card) != CT_BLOCK_START) && --wait) |
| 564 | ; |
| 565 | if (!wait) { /* timeout */ |
| 566 | spi_sdcard_disable_cs(card); |
| 567 | return -1; |
| 568 | } |
| 569 | |
| 570 | /* receive data */ |
| 571 | for (int k = 0; k < 512; k++) { |
| 572 | uint8_t tmp = spi_sdcard_recvbyte(card); |
| 573 | ((uint8_t *)buff)[512 * i + k] = tmp; |
| 574 | c = crc16_byte(c, tmp); |
| 575 | } |
| 576 | |
| 577 | /* receive crc and verify check sum */ |
| 578 | if (((c >> 8) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 579 | spi_sdcard_disable_cs(card); |
| 580 | return -1; |
| 581 | } |
| 582 | if (((c >> 0) & 0xff) != spi_sdcard_recvbyte(card)) { |
| 583 | spi_sdcard_disable_cs(card); |
| 584 | return -1; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /* disable cs */ |
| 589 | spi_sdcard_disable_cs(card); |
| 590 | |
| 591 | if (spi_sdcard_do_command(card, STOP_TRANSMISSION, 0, NULL)) |
| 592 | if (spi_sdcard_do_command(card, SEND_STATUS, 0, NULL)) |
| 593 | return -1; |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | int spi_sdcard_read(const struct spi_sdcard *card, |
| 599 | void *dest, |
| 600 | size_t offset, |
| 601 | size_t count) |
| 602 | { |
| 603 | size_t start_block_address = offset / BLOCK_SIZE; |
| 604 | size_t end_block_address = (offset + count - 1) / BLOCK_SIZE; |
| 605 | size_t has_begin = !!(offset % BLOCK_SIZE); |
| 606 | size_t has_end = !!((offset + count) % BLOCK_SIZE); |
| 607 | |
| 608 | if (start_block_address == end_block_address) { |
| 609 | uint8_t tmp[BLOCK_SIZE]; |
| 610 | size_t o = offset % BLOCK_SIZE; |
| 611 | size_t l = count; |
| 612 | if (spi_sdcard_single_read(card, start_block_address, tmp)) |
| 613 | return -1; |
| 614 | memcpy(dest, tmp + o, l); |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | if (has_begin) { |
| 619 | uint8_t tmp[BLOCK_SIZE]; |
| 620 | size_t o = offset % BLOCK_SIZE; |
| 621 | size_t l = BLOCK_SIZE - o; |
| 622 | if (spi_sdcard_single_read(card, start_block_address, tmp)) |
| 623 | return -1; |
| 624 | memcpy(dest, tmp + o, l); |
| 625 | } |
| 626 | |
| 627 | if (start_block_address + has_begin <= end_block_address - has_end) { |
| 628 | size_t start_lba = start_block_address + has_begin; |
| 629 | size_t end_lba = end_block_address - has_end; |
| 630 | size_t o = has_begin ? BLOCK_SIZE - offset % BLOCK_SIZE : 0; |
| 631 | if (start_lba < end_lba) { |
| 632 | if (spi_sdcard_multiple_read(card, start_lba, end_lba, |
| 633 | dest + o)) |
| 634 | return -1; |
| 635 | } else { |
| 636 | if (spi_sdcard_single_read(card, start_lba, dest + o)) |
| 637 | return -1; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | if (has_end) { |
| 642 | uint8_t tmp[BLOCK_SIZE]; |
| 643 | size_t o = 0; |
| 644 | size_t l = (offset + count) % BLOCK_SIZE; |
| 645 | if (spi_sdcard_single_read(card, end_block_address, tmp)) |
| 646 | return -1; |
| 647 | memcpy(dest + count - l, tmp + o, l); |
| 648 | } |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | int spi_sdcard_single_write(const struct spi_sdcard *card, |
| 654 | size_t block_address, |
| 655 | void *buff) |
| 656 | { |
| 657 | int wait; |
| 658 | uint16_t c = 0; |
| 659 | if (card->type == SDCARD_TYPE_SDSC) |
| 660 | block_address = block_address * 512; |
| 661 | |
| 662 | if (spi_sdcard_do_command(card, WRITE_BLOCK, block_address, NULL)) |
| 663 | return -1; |
| 664 | |
Martin Roth | 3e25f85 | 2023-09-04 15:37:07 -0600 | [diff] [blame] | 665 | /* enable cs */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 666 | spi_sdcard_enable_cs(card); |
| 667 | |
| 668 | /* send start block token */ |
| 669 | spi_sdcard_sendbyte(card, CT_BLOCK_START); |
| 670 | |
| 671 | /* send data */ |
| 672 | for (int i = 0; i < 512; i++) { |
| 673 | spi_sdcard_sendbyte(card, ((uint8_t *)buff)[i]); |
| 674 | c = crc16_byte(c, ((uint8_t *)buff)[i]); |
| 675 | } |
| 676 | |
| 677 | /* send crc check sum */ |
| 678 | spi_sdcard_sendbyte(card, 0xff & (c >> 8)); |
| 679 | spi_sdcard_sendbyte(card, 0xff & (c >> 0)); |
| 680 | |
Martin Roth | 0949e73 | 2021-10-01 14:28:22 -0600 | [diff] [blame] | 681 | /* receive and verify data response token */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 682 | c = spi_sdcard_recvbyte(card); |
| 683 | if ((c & CT_RESPONSE_MASK) != CT_RESPONSE_ACCEPTED) { |
| 684 | spi_sdcard_disable_cs(card); |
| 685 | return -1; |
| 686 | } |
| 687 | |
| 688 | wait = 0xffff; |
| 689 | while ((spi_sdcard_recvbyte(card) == 0) && --wait) |
| 690 | ;/* wait for complete */ |
| 691 | if (!wait) { |
| 692 | spi_sdcard_disable_cs(card); |
| 693 | return -1; |
| 694 | } |
| 695 | |
| 696 | /* disable cs */ |
| 697 | spi_sdcard_disable_cs(card); |
| 698 | |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | int spi_sdcard_multiple_write(const struct spi_sdcard *card, |
| 703 | size_t start_block_address, |
| 704 | size_t end_block_address, |
| 705 | void *buff) |
| 706 | { |
| 707 | int wait, ret = 0; |
| 708 | int block_num = end_block_address - start_block_address + 1; |
| 709 | if (card->type == SDCARD_TYPE_SDSC) { |
| 710 | start_block_address = start_block_address * 512; |
| 711 | end_block_address = end_block_address * 512; |
| 712 | } |
| 713 | |
| 714 | if (spi_sdcard_do_command(card, WRITE_MULTIPLEBLOCK, |
| 715 | start_block_address, NULL)) |
| 716 | return -1; |
| 717 | |
| 718 | /* enable cs */ |
| 719 | spi_sdcard_enable_cs(card); |
| 720 | |
| 721 | for (int i = 0; i < block_num; i++) { |
| 722 | uint16_t c = 0; |
| 723 | |
| 724 | ret = -1; |
| 725 | |
| 726 | /* send start block token */ |
| 727 | spi_sdcard_sendbyte(card, CT_MULTIPLE_BLOCK_START); |
| 728 | |
| 729 | /* send data */ |
| 730 | for (int k = 0; k < 512; k++) { |
| 731 | uint8_t tmp = ((uint8_t *)buff)[512 * i + k]; |
| 732 | spi_sdcard_sendbyte(card, tmp); |
| 733 | c = crc16_byte(c, tmp); |
| 734 | } |
| 735 | |
| 736 | /* send crc check sum */ |
| 737 | spi_sdcard_sendbyte(card, 0xff & (c >> 8)); |
| 738 | spi_sdcard_sendbyte(card, 0xff & (c >> 0)); |
| 739 | |
Martin Roth | 0949e73 | 2021-10-01 14:28:22 -0600 | [diff] [blame] | 740 | /* receive and verify data response token */ |
Xiang Wang | b134945 | 2019-08-27 15:57:23 +0800 | [diff] [blame] | 741 | c = spi_sdcard_recvbyte(card); |
| 742 | if ((c & CT_RESPONSE_MASK) != CT_RESPONSE_ACCEPTED) |
| 743 | break; |
| 744 | |
| 745 | wait = 0xffff; |
| 746 | while ((spi_sdcard_recvbyte(card) == 0) && --wait) |
| 747 | ;/* wait for complete */ |
| 748 | if (!wait) |
| 749 | break; |
| 750 | |
| 751 | ret = 0; |
| 752 | } |
| 753 | |
| 754 | /* send stop transmission token */ |
| 755 | spi_sdcard_sendbyte(card, CT_MULTIPLE_BLOCK_STOP); |
| 756 | |
| 757 | /* disable cs */ |
| 758 | spi_sdcard_disable_cs(card); |
| 759 | |
| 760 | if (spi_sdcard_do_command(card, STOP_TRANSMISSION, 0, NULL)) |
| 761 | if (spi_sdcard_do_command(card, SEND_STATUS, 0, NULL)) |
| 762 | return -1; |
| 763 | |
| 764 | return ret; |
| 765 | } |
| 766 | |
| 767 | int spi_sdcard_erase(const struct spi_sdcard *card, |
| 768 | size_t start_block_address, |
| 769 | size_t end_block_address) |
| 770 | { |
| 771 | if (card->type == SDCARD_TYPE_SDSC) { |
| 772 | start_block_address = start_block_address * 512; |
| 773 | end_block_address = end_block_address * 512; |
| 774 | } |
| 775 | |
| 776 | /* CMD32, set erase start address */ |
| 777 | if (spi_sdcard_do_command(card, ERASE_WR_BLK_START_ADDR, |
| 778 | start_block_address, NULL)) |
| 779 | return -1; |
| 780 | |
| 781 | /* CMD33, set erase end address */ |
| 782 | if (spi_sdcard_do_command(card, ERASE_WR_BLK_END_ADDR, |
| 783 | end_block_address, NULL)) |
| 784 | return -1; |
| 785 | |
| 786 | /* CMD38, erase */ |
| 787 | if (spi_sdcard_do_command(card, ERASE, 0, NULL)) |
| 788 | return -1; |
| 789 | |
| 790 | return 0; |
| 791 | } |
| 792 | |
| 793 | int spi_sdcard_erase_all(const struct spi_sdcard *card) |
| 794 | { |
| 795 | return spi_sdcard_erase(card, 0, spi_sdcard_size(card) / BLOCK_SIZE); |
| 796 | } |