Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Atmel SPI DataFlash support |
| 3 | * |
| 4 | * Copyright (C) 2008 Atmel Corporation |
Mike Frysinger | 22f8b68 | 2009-10-09 17:12:44 -0400 | [diff] [blame] | 5 | * Licensed under the GPL-2 or later. |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 6 | */ |
Mike Frysinger | c5431ac | 2009-03-23 23:03:58 -0400 | [diff] [blame] | 7 | |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 8 | #include <common.h> |
| 9 | #include <malloc.h> |
| 10 | #include <spi_flash.h> |
| 11 | |
| 12 | #include "spi_flash_internal.h" |
| 13 | |
| 14 | /* AT45-specific commands */ |
| 15 | #define CMD_AT45_READ_STATUS 0xd7 |
| 16 | #define CMD_AT45_ERASE_PAGE 0x81 |
| 17 | #define CMD_AT45_LOAD_PROG_BUF1 0x82 |
| 18 | #define CMD_AT45_LOAD_BUF1 0x84 |
| 19 | #define CMD_AT45_LOAD_PROG_BUF2 0x85 |
| 20 | #define CMD_AT45_LOAD_BUF2 0x87 |
| 21 | #define CMD_AT45_PROG_BUF1 0x88 |
| 22 | #define CMD_AT45_PROG_BUF2 0x89 |
| 23 | |
| 24 | /* AT45 status register bits */ |
| 25 | #define AT45_STATUS_P2_PAGE_SIZE (1 << 0) |
| 26 | #define AT45_STATUS_READY (1 << 7) |
| 27 | |
| 28 | /* DataFlash family IDs, as obtained from the second idcode byte */ |
| 29 | #define DF_FAMILY_AT26F 0 |
| 30 | #define DF_FAMILY_AT45 1 |
| 31 | #define DF_FAMILY_AT26DF 2 /* AT25DF and AT26DF */ |
| 32 | |
| 33 | struct atmel_spi_flash_params { |
| 34 | u8 idcode1; |
| 35 | /* Log2 of page size in power-of-two mode */ |
| 36 | u8 l2_page_size; |
| 37 | u8 pages_per_block; |
| 38 | u8 blocks_per_sector; |
| 39 | u8 nr_sectors; |
| 40 | const char *name; |
| 41 | }; |
| 42 | |
Brad Bozarth | 615c220 | 2009-01-01 22:45:47 -0500 | [diff] [blame] | 43 | /* spi_flash needs to be first so upper layers can free() it */ |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 44 | struct atmel_spi_flash { |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 45 | struct spi_flash flash; |
Brad Bozarth | 615c220 | 2009-01-01 22:45:47 -0500 | [diff] [blame] | 46 | const struct atmel_spi_flash_params *params; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | static inline struct atmel_spi_flash * |
| 50 | to_atmel_spi_flash(struct spi_flash *flash) |
| 51 | { |
| 52 | return container_of(flash, struct atmel_spi_flash, flash); |
| 53 | } |
| 54 | |
| 55 | static const struct atmel_spi_flash_params atmel_spi_flash_table[] = { |
| 56 | { |
Jean-Christophe PLAGNIOL-VILLARD | af2b299 | 2009-01-04 07:44:07 +0100 | [diff] [blame] | 57 | .idcode1 = 0x22, |
| 58 | .l2_page_size = 8, |
| 59 | .pages_per_block = 8, |
| 60 | .blocks_per_sector = 16, |
| 61 | .nr_sectors = 4, |
| 62 | .name = "AT45DB011D", |
| 63 | }, |
| 64 | { |
| 65 | .idcode1 = 0x23, |
| 66 | .l2_page_size = 8, |
| 67 | .pages_per_block = 8, |
| 68 | .blocks_per_sector = 16, |
| 69 | .nr_sectors = 8, |
| 70 | .name = "AT45DB021D", |
| 71 | }, |
| 72 | { |
| 73 | .idcode1 = 0x24, |
| 74 | .l2_page_size = 8, |
| 75 | .pages_per_block = 8, |
| 76 | .blocks_per_sector = 32, |
| 77 | .nr_sectors = 8, |
| 78 | .name = "AT45DB041D", |
| 79 | }, |
| 80 | { |
| 81 | .idcode1 = 0x25, |
| 82 | .l2_page_size = 8, |
| 83 | .pages_per_block = 8, |
| 84 | .blocks_per_sector = 32, |
| 85 | .nr_sectors = 16, |
| 86 | .name = "AT45DB081D", |
| 87 | }, |
| 88 | { |
| 89 | .idcode1 = 0x26, |
| 90 | .l2_page_size = 9, |
| 91 | .pages_per_block = 8, |
| 92 | .blocks_per_sector = 32, |
| 93 | .nr_sectors = 16, |
| 94 | .name = "AT45DB161D", |
| 95 | }, |
| 96 | { |
| 97 | .idcode1 = 0x27, |
| 98 | .l2_page_size = 9, |
| 99 | .pages_per_block = 8, |
| 100 | .blocks_per_sector = 64, |
| 101 | .nr_sectors = 64, |
| 102 | .name = "AT45DB321D", |
| 103 | }, |
| 104 | { |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 105 | .idcode1 = 0x28, |
| 106 | .l2_page_size = 10, |
| 107 | .pages_per_block = 8, |
| 108 | .blocks_per_sector = 32, |
| 109 | .nr_sectors = 32, |
| 110 | .name = "AT45DB642D", |
| 111 | }, |
| 112 | }; |
| 113 | |
| 114 | static int at45_wait_ready(struct spi_flash *flash, unsigned long timeout) |
| 115 | { |
Mike Frysinger | 8982146 | 2011-04-11 23:39:28 -0400 | [diff] [blame] | 116 | struct spi_slave *spi = flash->spi; |
| 117 | unsigned long timebase; |
| 118 | int ret; |
| 119 | u8 cmd = CMD_AT45_READ_STATUS; |
| 120 | u8 status; |
| 121 | |
| 122 | timebase = get_timer(0); |
| 123 | |
| 124 | ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); |
| 125 | if (ret) |
| 126 | return -1; |
| 127 | |
| 128 | do { |
| 129 | ret = spi_xfer(spi, 8, NULL, &status, 0); |
| 130 | if (ret) |
| 131 | return -1; |
| 132 | |
| 133 | if (status & AT45_STATUS_READY) |
| 134 | break; |
| 135 | } while (get_timer(timebase) < timeout); |
| 136 | |
| 137 | /* Deactivate CS */ |
| 138 | spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); |
| 139 | |
| 140 | if (status & AT45_STATUS_READY) |
| 141 | return 0; |
| 142 | |
| 143 | /* Timed out */ |
| 144 | return -1; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Assemble the address part of a command for AT45 devices in |
| 149 | * non-power-of-two page size mode. |
| 150 | */ |
| 151 | static void at45_build_address(struct atmel_spi_flash *asf, u8 *cmd, u32 offset) |
| 152 | { |
| 153 | unsigned long page_addr; |
| 154 | unsigned long byte_addr; |
| 155 | unsigned long page_size; |
| 156 | unsigned int page_shift; |
| 157 | |
| 158 | /* |
| 159 | * The "extra" space per page is the power-of-two page size |
| 160 | * divided by 32. |
| 161 | */ |
| 162 | page_shift = asf->params->l2_page_size; |
| 163 | page_size = (1 << page_shift) + (1 << (page_shift - 5)); |
| 164 | page_shift++; |
| 165 | page_addr = offset / page_size; |
| 166 | byte_addr = offset % page_size; |
| 167 | |
| 168 | cmd[0] = page_addr >> (16 - page_shift); |
| 169 | cmd[1] = page_addr << (page_shift - 8) | (byte_addr >> 8); |
| 170 | cmd[2] = byte_addr; |
| 171 | } |
| 172 | |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 173 | static int dataflash_read_fast_at45(struct spi_flash *flash, |
| 174 | u32 offset, size_t len, void *buf) |
| 175 | { |
| 176 | struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); |
| 177 | u8 cmd[5]; |
| 178 | |
| 179 | cmd[0] = CMD_READ_ARRAY_FAST; |
| 180 | at45_build_address(asf, cmd + 1, offset); |
| 181 | cmd[4] = 0x00; |
| 182 | |
| 183 | return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); |
| 184 | } |
| 185 | |
Todor I Mollov | 6a5a250 | 2009-04-04 07:14:44 -0400 | [diff] [blame] | 186 | /* |
| 187 | * TODO: the two write funcs (_p2/_at45) should get unified ... |
| 188 | */ |
| 189 | static int dataflash_write_p2(struct spi_flash *flash, |
| 190 | u32 offset, size_t len, const void *buf) |
| 191 | { |
| 192 | struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); |
| 193 | unsigned long page_size; |
| 194 | u32 addr = offset; |
| 195 | size_t chunk_len; |
| 196 | size_t actual; |
| 197 | int ret; |
| 198 | u8 cmd[4]; |
| 199 | |
| 200 | /* |
| 201 | * TODO: This function currently uses only page buffer #1. We can |
| 202 | * speed this up by using both buffers and loading one buffer while |
| 203 | * the other is being programmed into main memory. |
| 204 | */ |
| 205 | |
| 206 | page_size = (1 << asf->params->l2_page_size); |
| 207 | |
| 208 | ret = spi_claim_bus(flash->spi); |
| 209 | if (ret) { |
| 210 | debug("SF: Unable to claim SPI bus\n"); |
| 211 | return ret; |
| 212 | } |
| 213 | |
| 214 | for (actual = 0; actual < len; actual += chunk_len) { |
| 215 | chunk_len = min(len - actual, page_size - (addr % page_size)); |
| 216 | |
| 217 | /* Use the same address bits for both commands */ |
| 218 | cmd[0] = CMD_AT45_LOAD_BUF1; |
| 219 | cmd[1] = addr >> 16; |
| 220 | cmd[2] = addr >> 8; |
| 221 | cmd[3] = addr; |
| 222 | |
| 223 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, |
| 224 | buf + actual, chunk_len); |
| 225 | if (ret < 0) { |
| 226 | debug("SF: Loading AT45 buffer failed\n"); |
| 227 | goto out; |
| 228 | } |
| 229 | |
| 230 | cmd[0] = CMD_AT45_PROG_BUF1; |
| 231 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); |
| 232 | if (ret < 0) { |
| 233 | debug("SF: AT45 page programming failed\n"); |
| 234 | goto out; |
| 235 | } |
| 236 | |
| 237 | ret = at45_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
| 238 | if (ret < 0) { |
| 239 | debug("SF: AT45 page programming timed out\n"); |
| 240 | goto out; |
| 241 | } |
| 242 | |
| 243 | addr += chunk_len; |
| 244 | } |
| 245 | |
| 246 | debug("SF: AT45: Successfully programmed %zu bytes @ 0x%x\n", |
| 247 | len, offset); |
| 248 | ret = 0; |
| 249 | |
| 250 | out: |
| 251 | spi_release_bus(flash->spi); |
| 252 | return ret; |
| 253 | } |
| 254 | |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 255 | static int dataflash_write_at45(struct spi_flash *flash, |
| 256 | u32 offset, size_t len, const void *buf) |
| 257 | { |
| 258 | struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); |
| 259 | unsigned long page_addr; |
| 260 | unsigned long byte_addr; |
| 261 | unsigned long page_size; |
| 262 | unsigned int page_shift; |
| 263 | size_t chunk_len; |
| 264 | size_t actual; |
| 265 | int ret; |
| 266 | u8 cmd[4]; |
| 267 | |
Todor I Mollov | 6a5a250 | 2009-04-04 07:14:44 -0400 | [diff] [blame] | 268 | /* |
| 269 | * TODO: This function currently uses only page buffer #1. We can |
| 270 | * speed this up by using both buffers and loading one buffer while |
| 271 | * the other is being programmed into main memory. |
| 272 | */ |
| 273 | |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 274 | page_shift = asf->params->l2_page_size; |
| 275 | page_size = (1 << page_shift) + (1 << (page_shift - 5)); |
| 276 | page_shift++; |
| 277 | page_addr = offset / page_size; |
| 278 | byte_addr = offset % page_size; |
| 279 | |
| 280 | ret = spi_claim_bus(flash->spi); |
| 281 | if (ret) { |
| 282 | debug("SF: Unable to claim SPI bus\n"); |
| 283 | return ret; |
| 284 | } |
| 285 | |
| 286 | for (actual = 0; actual < len; actual += chunk_len) { |
| 287 | chunk_len = min(len - actual, page_size - byte_addr); |
| 288 | |
| 289 | /* Use the same address bits for both commands */ |
| 290 | cmd[0] = CMD_AT45_LOAD_BUF1; |
| 291 | cmd[1] = page_addr >> (16 - page_shift); |
| 292 | cmd[2] = page_addr << (page_shift - 8) | (byte_addr >> 8); |
| 293 | cmd[3] = byte_addr; |
| 294 | |
| 295 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, |
| 296 | buf + actual, chunk_len); |
| 297 | if (ret < 0) { |
| 298 | debug("SF: Loading AT45 buffer failed\n"); |
| 299 | goto out; |
| 300 | } |
| 301 | |
| 302 | cmd[0] = CMD_AT45_PROG_BUF1; |
| 303 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); |
| 304 | if (ret < 0) { |
| 305 | debug("SF: AT45 page programming failed\n"); |
| 306 | goto out; |
| 307 | } |
| 308 | |
| 309 | ret = at45_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
| 310 | if (ret < 0) { |
| 311 | debug("SF: AT45 page programming timed out\n"); |
| 312 | goto out; |
| 313 | } |
| 314 | |
| 315 | page_addr++; |
| 316 | byte_addr = 0; |
| 317 | } |
| 318 | |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 319 | debug("SF: AT45: Successfully programmed %zu bytes @ 0x%x\n", |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 320 | len, offset); |
| 321 | ret = 0; |
| 322 | |
| 323 | out: |
| 324 | spi_release_bus(flash->spi); |
| 325 | return ret; |
| 326 | } |
| 327 | |
Todor I Mollov | 6a5a250 | 2009-04-04 07:14:44 -0400 | [diff] [blame] | 328 | /* |
| 329 | * TODO: the two erase funcs (_p2/_at45) should get unified ... |
| 330 | */ |
Mike Frysinger | aea4e17 | 2011-04-12 01:51:29 -0400 | [diff] [blame] | 331 | static int dataflash_erase_p2(struct spi_flash *flash, u32 offset, size_t len) |
Todor I Mollov | 6a5a250 | 2009-04-04 07:14:44 -0400 | [diff] [blame] | 332 | { |
| 333 | struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); |
| 334 | unsigned long page_size; |
| 335 | |
| 336 | size_t actual; |
| 337 | int ret; |
| 338 | u8 cmd[4]; |
| 339 | |
| 340 | /* |
| 341 | * TODO: This function currently uses page erase only. We can |
| 342 | * probably speed things up by using block and/or sector erase |
| 343 | * when possible. |
| 344 | */ |
| 345 | |
| 346 | page_size = (1 << asf->params->l2_page_size); |
| 347 | |
| 348 | if (offset % page_size || len % page_size) { |
| 349 | debug("SF: Erase offset/length not multiple of page size\n"); |
| 350 | return -1; |
| 351 | } |
| 352 | |
| 353 | cmd[0] = CMD_AT45_ERASE_PAGE; |
| 354 | cmd[3] = 0x00; |
| 355 | |
| 356 | ret = spi_claim_bus(flash->spi); |
| 357 | if (ret) { |
| 358 | debug("SF: Unable to claim SPI bus\n"); |
| 359 | return ret; |
| 360 | } |
| 361 | |
| 362 | for (actual = 0; actual < len; actual += page_size) { |
| 363 | cmd[1] = offset >> 16; |
| 364 | cmd[2] = offset >> 8; |
| 365 | |
| 366 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); |
| 367 | if (ret < 0) { |
| 368 | debug("SF: AT45 page erase failed\n"); |
| 369 | goto out; |
| 370 | } |
| 371 | |
| 372 | ret = at45_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); |
| 373 | if (ret < 0) { |
| 374 | debug("SF: AT45 page erase timed out\n"); |
| 375 | goto out; |
| 376 | } |
| 377 | |
| 378 | offset += page_size; |
| 379 | } |
| 380 | |
| 381 | debug("SF: AT45: Successfully erased %zu bytes @ 0x%x\n", |
| 382 | len, offset); |
| 383 | ret = 0; |
| 384 | |
| 385 | out: |
| 386 | spi_release_bus(flash->spi); |
| 387 | return ret; |
| 388 | } |
| 389 | |
Mike Frysinger | aea4e17 | 2011-04-12 01:51:29 -0400 | [diff] [blame] | 390 | static int dataflash_erase_at45(struct spi_flash *flash, u32 offset, size_t len) |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 391 | { |
| 392 | struct atmel_spi_flash *asf = to_atmel_spi_flash(flash); |
| 393 | unsigned long page_addr; |
| 394 | unsigned long page_size; |
| 395 | unsigned int page_shift; |
| 396 | size_t actual; |
| 397 | int ret; |
| 398 | u8 cmd[4]; |
| 399 | |
| 400 | /* |
| 401 | * TODO: This function currently uses page erase only. We can |
| 402 | * probably speed things up by using block and/or sector erase |
| 403 | * when possible. |
| 404 | */ |
| 405 | |
| 406 | page_shift = asf->params->l2_page_size; |
| 407 | page_size = (1 << page_shift) + (1 << (page_shift - 5)); |
| 408 | page_shift++; |
| 409 | page_addr = offset / page_size; |
| 410 | |
| 411 | if (offset % page_size || len % page_size) { |
| 412 | debug("SF: Erase offset/length not multiple of page size\n"); |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | cmd[0] = CMD_AT45_ERASE_PAGE; |
| 417 | cmd[3] = 0x00; |
| 418 | |
| 419 | ret = spi_claim_bus(flash->spi); |
| 420 | if (ret) { |
| 421 | debug("SF: Unable to claim SPI bus\n"); |
| 422 | return ret; |
| 423 | } |
| 424 | |
| 425 | for (actual = 0; actual < len; actual += page_size) { |
| 426 | cmd[1] = page_addr >> (16 - page_shift); |
| 427 | cmd[2] = page_addr << (page_shift - 8); |
| 428 | |
| 429 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0); |
| 430 | if (ret < 0) { |
| 431 | debug("SF: AT45 page erase failed\n"); |
| 432 | goto out; |
| 433 | } |
| 434 | |
| 435 | ret = at45_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); |
| 436 | if (ret < 0) { |
| 437 | debug("SF: AT45 page erase timed out\n"); |
| 438 | goto out; |
| 439 | } |
| 440 | |
| 441 | page_addr++; |
| 442 | } |
| 443 | |
Stefan Roese | 3762825 | 2008-08-06 14:05:38 +0200 | [diff] [blame] | 444 | debug("SF: AT45: Successfully erased %zu bytes @ 0x%x\n", |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 445 | len, offset); |
| 446 | ret = 0; |
| 447 | |
| 448 | out: |
| 449 | spi_release_bus(flash->spi); |
| 450 | return ret; |
| 451 | } |
| 452 | |
| 453 | struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode) |
| 454 | { |
| 455 | const struct atmel_spi_flash_params *params; |
Mike Frysinger | 02110b5 | 2010-04-29 00:35:12 -0400 | [diff] [blame] | 456 | unsigned page_size; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 457 | unsigned int family; |
| 458 | struct atmel_spi_flash *asf; |
| 459 | unsigned int i; |
| 460 | int ret; |
| 461 | u8 status; |
| 462 | |
| 463 | for (i = 0; i < ARRAY_SIZE(atmel_spi_flash_table); i++) { |
| 464 | params = &atmel_spi_flash_table[i]; |
| 465 | if (params->idcode1 == idcode[1]) |
| 466 | break; |
| 467 | } |
| 468 | |
| 469 | if (i == ARRAY_SIZE(atmel_spi_flash_table)) { |
| 470 | debug("SF: Unsupported DataFlash ID %02x\n", |
| 471 | idcode[1]); |
| 472 | return NULL; |
| 473 | } |
| 474 | |
| 475 | asf = malloc(sizeof(struct atmel_spi_flash)); |
| 476 | if (!asf) { |
| 477 | debug("SF: Failed to allocate memory\n"); |
| 478 | return NULL; |
| 479 | } |
| 480 | |
| 481 | asf->params = params; |
| 482 | asf->flash.spi = spi; |
| 483 | asf->flash.name = params->name; |
| 484 | |
| 485 | /* Assuming power-of-two page size initially. */ |
| 486 | page_size = 1 << params->l2_page_size; |
| 487 | |
| 488 | family = idcode[1] >> 5; |
| 489 | |
| 490 | switch (family) { |
| 491 | case DF_FAMILY_AT45: |
| 492 | /* |
| 493 | * AT45 chips have configurable page size. The status |
| 494 | * register indicates which configuration is active. |
| 495 | */ |
| 496 | ret = spi_flash_cmd(spi, CMD_AT45_READ_STATUS, &status, 1); |
| 497 | if (ret) |
| 498 | goto err; |
| 499 | |
| 500 | debug("SF: AT45 status register: %02x\n", status); |
| 501 | |
| 502 | if (!(status & AT45_STATUS_P2_PAGE_SIZE)) { |
| 503 | asf->flash.read = dataflash_read_fast_at45; |
| 504 | asf->flash.write = dataflash_write_at45; |
| 505 | asf->flash.erase = dataflash_erase_at45; |
| 506 | page_size += 1 << (params->l2_page_size - 5); |
| 507 | } else { |
Mike Frysinger | 373e7d6 | 2011-01-10 02:20:14 -0500 | [diff] [blame] | 508 | asf->flash.read = spi_flash_cmd_read_fast; |
Todor I Mollov | 6a5a250 | 2009-04-04 07:14:44 -0400 | [diff] [blame] | 509 | asf->flash.write = dataflash_write_p2; |
| 510 | asf->flash.erase = dataflash_erase_p2; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | break; |
| 514 | |
| 515 | case DF_FAMILY_AT26F: |
| 516 | case DF_FAMILY_AT26DF: |
Mike Frysinger | 373e7d6 | 2011-01-10 02:20:14 -0500 | [diff] [blame] | 517 | asf->flash.read = spi_flash_cmd_read_fast; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 518 | break; |
| 519 | |
| 520 | default: |
| 521 | debug("SF: Unsupported DataFlash family %u\n", family); |
| 522 | goto err; |
| 523 | } |
| 524 | |
Richard Retanubun | b0148dc | 2011-02-16 16:37:22 -0500 | [diff] [blame] | 525 | asf->flash.sector_size = page_size; |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 526 | asf->flash.size = page_size * params->pages_per_block |
| 527 | * params->blocks_per_sector |
| 528 | * params->nr_sectors; |
| 529 | |
Haavard Skinnemoen | 2f5bfb7 | 2008-05-16 11:10:33 +0200 | [diff] [blame] | 530 | return &asf->flash; |
| 531 | |
| 532 | err: |
| 533 | free(asf); |
| 534 | return NULL; |
| 535 | } |