drivers/mtd/spi/spi_flash_probe.c

   1 /*
   2  * SPI flash probing
   3  *
   4  * Copyright (C) 2008 Atmel Corporation
   5  * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
   6  * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
   7  *
   8  * Licensed under the GPL-2 or later.
   9  */
  10
  11 #include <common.h>
  12 #include <fdtdec.h>
  13 #include <malloc.h>
  14 #include <spi.h>
  15 #include <spi_flash.h>
  16
  17 #include "spi_flash_internal.h"
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 /*
  22  * struct spi_flash_params - SPI/QSPI flash device params structure
  23  *
  24  * @name:               Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO])
  25  * @jedec:              Device jedec ID (0x[1byte_manuf_id][2byte_dev_id])
  26  * @ext_jedec:          Device ext_jedec ID
  27  * @sector_size:        Sector size of this device
  28  * @nr_sectors: No.of sectors on this device
  29  * @flags:              Importent param, for flash specific behaviour
  30  */
  31 struct spi_flash_params {
  32         const char *name;
  33         u32 jedec;
  34         u16 ext_jedec;
  35         u32 sector_size;
  36         u32 nr_sectors;
  37         u16 flags;
  38 };
  39
  40 static const struct spi_flash_params spi_flash_params_table[] = {
  41 #ifdef CONFIG_SPI_FLASH_ATMEL           /* ATMEL */
  42         {"AT45DB011D",     0x1f2200, 0x0,       64 * 1024,     4,            0},
  43         {"AT45DB021D",     0x1f2300, 0x0,       64 * 1024,     8,            0},
  44         {"AT45DB041D",     0x1f2400, 0x0,       64 * 1024,     8,            0},
  45         {"AT45DB081D",     0x1f2500, 0x0,       64 * 1024,    16,            0},
  46         {"AT45DB161D",     0x1f2600, 0x0,       64 * 1024,    32,            0},
  47         {"AT45DB321D",     0x1f2700, 0x0,       64 * 1024,    64,            0},
  48         {"AT45DB641D",     0x1f2800, 0x0,       64 * 1024,   128,            0},
  49 #endif
  50 #ifdef CONFIG_SPI_FLASH_EON             /* EON */
  51         {"EN25Q32B",       0x1c3016, 0x0,       64 * 1024,    64,            0},
  52         {"EN25Q128B",      0x1c3018, 0x0,       64 * 1024,   256,            0},
  53 #endif
  54 #ifdef CONFIG_SPI_FLASH_GIGADEVICE      /* GIGADEVICE */
  55         {"GD25Q64B",       0xc84017, 0x0,       64 * 1024,   128,            0},
  56         {"GD25LQ32",       0xc86016, 0x0,       64 * 1024,    64,            0},
  57 #endif
  58 #ifdef CONFIG_SPI_FLASH_MACRONIX        /* MACRONIX */
  59         {"MX25L4005",      0xc22013, 0x0,       64 * 1024,     8,            0},
  60         {"MX25L8005",      0xc22014, 0x0,       64 * 1024,    16,            0},
  61         {"MX25L1605D",     0xc22015, 0x0,       64 * 1024,    32,            0},
  62         {"MX25L3205D",     0xc22016, 0x0,       64 * 1024,    64,            0},
  63         {"MX25L6405D",     0xc22017, 0x0,       64 * 1024,   128,            0},
  64         {"MX25L12805",     0xc22018, 0x0,       64 * 1024,   256,            0},
  65         {"MX25L12855E",    0xc22618, 0x0,       64 * 1024,   256,            0},
  66 #endif
  67 #ifdef CONFIG_SPI_FLASH_SPANSION        /* SPANSION */
  68         {"S25FL008A",      0x010213, 0x0,       64 * 1024,    16,            0},
  69         {"S25FL016A",      0x010214, 0x0,       64 * 1024,    32,            0},
  70         {"S25FL032A",      0x010215, 0x0,       64 * 1024,    64,            0},
  71         {"S25FL064A",      0x010216, 0x0,       64 * 1024,   128,            0},
  72         {"S25FL128P_256K", 0x012018, 0x0300,   256 * 1024,    64,            0},
  73         {"S25FL128P_64K",  0x012018, 0x0301,    64 * 1024,   256,            0},
  74         {"S25FL032P",      0x010215, 0x4d00,    64 * 1024,    64,            0},
  75         {"S25FL064P",      0x010216, 0x4d00,    64 * 1024,   128,            0},
  76         {"S25FL128S_64K",  0x012018, 0x4d01,    64 * 1024,   256,            0},
  77         {"S25FL256S_64K",  0x010219, 0x4d01,    64 * 1024,   512,            0},
  78         {"S25FL512S_64K",  0x010220, 0x4d01,    64 * 1024,  1024,            0},
  79 #endif
  80 #ifdef CONFIG_SPI_FLASH_STMICRO         /* STMICRO */
  81         {"M25P10",         0x202011, 0x0,       32 * 1024,     4,            0},
  82         {"M25P20",         0x202012, 0x0,       64 * 1024,     4,            0},
  83         {"M25P40",         0x202013, 0x0,       64 * 1024,     8,            0},
  84         {"M25P80",         0x202014, 0x0,       64 * 1024,    16,            0},
  85         {"M25P16",         0x202015, 0x0,       64 * 1024,    32,            0},
  86         {"M25P32",         0x202016, 0x0,       64 * 1024,    64,            0},
  87         {"M25P64",         0x202017, 0x0,       64 * 1024,   128,            0},
  88         {"M25P128",        0x202018, 0x0,      256 * 1024,    64,            0},
  89         {"N25Q32",         0x20ba16, 0x0,       64 * 1024,    64,            0},
  90         {"N25Q32A",        0x20bb16, 0x0,       64 * 1024,    64,            0},
  91         {"N25Q64",         0x20ba17, 0x0,       64 * 1024,   128,            0},
  92         {"N25Q64A",        0x20bb17, 0x0,       64 * 1024,   128,            0},
  93         {"N25Q128",        0x20ba18, 0x0,       64 * 1024,   256,            0},
  94         {"N25Q128A",       0x20bb18, 0x0,       64 * 1024,   256,            0},
  95         {"N25Q256",        0x20ba19, 0x0,       64 * 1024,   512,            0},
  96         {"N25Q256A",       0x20bb19, 0x0,       64 * 1024,   512,            0},
  97         {"N25Q512",        0x20ba20, 0x0,       64 * 1024,  1024,            0},
  98         {"N25Q512A",       0x20bb20, 0x0,       64 * 1024,  1024,            0},
  99         {"N25Q1024",       0x20ba21, 0x0,       64 * 1024,  2048,            0},
 100         {"N25Q1024A",      0x20bb21, 0x0,       64 * 1024,  2048,            0},
 101 #endif
 102 #ifdef CONFIG_SPI_FLASH_SST             /* SST */
 103         {"SST25VF040B",    0xbf258d, 0x0,       64 * 1024,     8,       SST_WP},
 104         {"SST25VF080B",    0xbf258e, 0x0,       64 * 1024,    16,       SST_WP},
 105         {"SST25VF016B",    0xbf2541, 0x0,       64 * 1024,    32,       SST_WP},
 106         {"SST25VF032B",    0xbf254a, 0x0,       64 * 1024,    64,       SST_WP},
 107         {"SST25VF064C",    0xbf254b, 0x0,       64 * 1024,   128,            0},
 108         {"SST25WF512",     0xbf2501, 0x0,       64 * 1024,     1,       SST_WP},
 109         {"SST25WF010",     0xbf2502, 0x0,       64 * 1024,     2,       SST_WP},
 110         {"SST25WF020",     0xbf2503, 0x0,       64 * 1024,     4,       SST_WP},
 111         {"SST25WF040",     0xbf2504, 0x0,       64 * 1024,     8,       SST_WP},
 112         {"SST25WF080",     0xbf2505, 0x0,       64 * 1024,    16,       SST_WP},
 113 #endif
 114 #ifdef CONFIG_SPI_FLASH_WINBOND         /* WINBOND */
 115         {"W25P80",         0xef2014, 0x0,       64 * 1024,    16,            0},
 116         {"W25P16",         0xef2015, 0x0,       64 * 1024,    32,            0},
 117         {"W25P32",         0xef2016, 0x0,       64 * 1024,    64,            0},
 118         {"W25X40",         0xef3013, 0x0,       64 * 1024,     8,            0},
 119         {"W25X16",         0xef3015, 0x0,       64 * 1024,    32,            0},
 120         {"W25X32",         0xef3016, 0x0,       64 * 1024,    64,            0},
 121         {"W25X64",         0xef3017, 0x0,       64 * 1024,   128,            0},
 122         {"W25Q80BL",       0xef4014, 0x0,       64 * 1024,    16,            0},
 123         {"W25Q16CL",       0xef4015, 0x0,       64 * 1024,    32,            0},
 124         {"W25Q32BV",       0xef4016, 0x0,       64 * 1024,    64,            0},
 125         {"W25Q64CV",       0xef4017, 0x0,       64 * 1024,   128,            0},
 126         {"W25Q128BV",      0xef4018, 0x0,       64 * 1024,   256,            0},
 127         {"W25Q256",        0xef4019, 0x0,       64 * 1024,   512,            0},
 128         {"W25Q80BW",       0xef5014, 0x0,       64 * 1024,    16,            0},
 129         {"W25Q16DW",       0xef6015, 0x0,       64 * 1024,    32,            0},
 130         {"W25Q32DW",       0xef6016, 0x0,       64 * 1024,    64,            0},
 131         {"W25Q64DW",       0xef6017, 0x0,       64 * 1024,   128,            0},
 132         {"W25Q128FW",      0xef6018, 0x0,       64 * 1024,   256,            0},
 133 #endif
 134         /*
 135          * Note:
 136          * Below paired flash devices has similar spi_flash_params params.
 137          * (S25FL129P_64K, S25FL128S_64K)
 138          * (W25Q80BL, W25Q80BV)
 139          * (W25Q16CL, W25Q16DV)
 140          * (W25Q32BV, W25Q32FV_SPI)
 141          * (W25Q64CV, W25Q64FV_SPI)
 142          * (W25Q128BV, W25Q128FV_SPI)
 143          * (W25Q32DW, W25Q32FV_QPI)
 144          * (W25Q64DW, W25Q64FV_QPI)
 145          * (W25Q128FW, W25Q128FV_QPI)
 146          */
 147         /*
 148          * TODO:
 149          * RAMTRON
 150          */
 151 };
 152
 153 struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode)
 154 {
 155         const struct spi_flash_params *params;
 156         struct spi_flash *flash;
 157         int i;
 158         u16 jedec = idcode[1] << 8 | idcode[2];
 159         u16 ext_jedec = idcode[3] << 8 | idcode[4];
 160
 161         /* Get the flash id (jedec = manuf_id + dev_id, ext_jedec) */
 162         for (i = 0; i < ARRAY_SIZE(spi_flash_params_table); i++) {
 163                 params = &spi_flash_params_table[i];
 164                 if ((params->jedec >> 16) == idcode[0]) {
 165                         if ((params->jedec & 0xFFFF) == jedec) {
 166                                 if (params->ext_jedec == 0)
 167                                         break;
 168                                 else if (params->ext_jedec == ext_jedec)
 169                                         break;
 170                         }
 171                 }
 172         }
 173
 174         if (i == ARRAY_SIZE(spi_flash_params_table)) {
 175                 printf("SF: Unsupported flash IDs: ");
 176                 printf("manuf %02x, jedec %04x, ext_jedec %04x\n",
 177                        idcode[0], jedec, ext_jedec);
 178                 return NULL;
 179         }
 180
 181         flash = malloc(sizeof(*flash));
 182         if (!flash) {
 183                 debug("SF: Failed to allocate spi_flash\n");
 184                 return NULL;
 185         }
 186         memset(flash, '\0', sizeof(*flash));
 187
 188         flash->spi = spi;
 189         flash->name = params->name;
 190         flash->poll_cmd = CMD_READ_STATUS;
 191
 192         /* Assign spi_flash ops */
 193         flash->write = spi_flash_cmd_write_multi;
 194 #ifdef CONFIG_SPI_FLASH_SST
 195         if (params->flags & SST_WP)
 196                 flash->write = sst_write_wp;
 197 #endif
 198         flash->erase = spi_flash_cmd_erase;
 199         flash->read = spi_flash_cmd_read_fast;
 200
 201         /* Compute the flash size */
 202         flash->page_size = 256;
 203         flash->sector_size = params->sector_size;
 204         flash->size = flash->sector_size * params->nr_sectors;
 205
 206         /* Flash powers up read-only, so clear BP# bits */
 207 #if defined(CONFIG_SPI_FLASH_ATMEL) || \
 208         defined(CONFIG_SPI_FLASH_MACRONIX) || \
 209         defined(CONFIG_SPI_FLASH_SST)
 210                 spi_flash_cmd_write_status(flash, 0);
 211 #endif
 212
 213         return flash;
 214 }
 215
 216 #ifdef CONFIG_SPI_FLASH_BAR
 217 int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0)
 218 {
 219         u8 cmd;
 220         u8 curr_bank = 0;
 221
 222         /* discover bank cmds */
 223         switch (idcode0) {
 224         case SPI_FLASH_SPANSION_IDCODE0:
 225                 flash->bank_read_cmd = CMD_BANKADDR_BRRD;
 226                 flash->bank_write_cmd = CMD_BANKADDR_BRWR;
 227                 break;
 228         case SPI_FLASH_STMICRO_IDCODE0:
 229         case SPI_FLASH_WINBOND_IDCODE0:
 230                 flash->bank_read_cmd = CMD_EXTNADDR_RDEAR;
 231                 flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
 232                 break;
 233         default:
 234                 printf("SF: Unsupported bank commands %02x\n", idcode0);
 235                 return -1;
 236         }
 237
 238         /* read the bank reg - on which bank the flash is in currently */
 239         cmd = flash->bank_read_cmd;
 240         if (flash->size > SPI_FLASH_16MB_BOUN) {
 241                 if (spi_flash_read_common(flash, &cmd, 1, &curr_bank, 1)) {
 242                         debug("SF: fail to read bank addr register\n");
 243                         return -1;
 244                 }
 245                 flash->bank_curr = curr_bank;
 246         } else {
 247                 flash->bank_curr = curr_bank;
 248         }
 249
 250         return 0;
 251 }
 252 #endif
 253
 254 #ifdef CONFIG_OF_CONTROL
 255 int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
 256 {
 257         fdt_addr_t addr;
 258         fdt_size_t size;
 259         int node;
 260
 261         /* If there is no node, do nothing */
 262         node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH);
 263         if (node < 0)
 264                 return 0;
 265
 266         addr = fdtdec_get_addr_size(blob, node, "memory-map", &size);
 267         if (addr == FDT_ADDR_T_NONE) {
 268                 debug("%s: Cannot decode address\n", __func__);
 269                 return 0;
 270         }
 271
 272         if (flash->size != size) {
 273                 debug("%s: Memory map must cover entire device\n", __func__);
 274                 return -1;
 275         }
 276         flash->memory_map = (void *)addr;
 277
 278         return 0;
 279 }
 280 #endif /* CONFIG_OF_CONTROL */
 281
 282 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 283                 unsigned int max_hz, unsigned int spi_mode)
 284 {
 285         struct spi_slave *spi;
 286         struct spi_flash *flash = NULL;
 287         u8 idcode[5], *idp;
 288         int ret;
 289
 290         /* Setup spi_slave */
 291         spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
 292         if (!spi) {
 293                 printf("SF: Failed to set up slave\n");
 294                 return NULL;
 295         }
 296
 297         /* Claim spi bus */
 298         ret = spi_claim_bus(spi);
 299         if (ret) {
 300                 debug("SF: Failed to claim SPI bus: %d\n", ret);
 301                 goto err_claim_bus;
 302         }
 303
 304         /* Read the ID codes */
 305         ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
 306         if (ret) {
 307                 printf("SF: Failed to get idcodes\n");
 308                 goto err_read_id;
 309         }
 310
 311 #ifdef DEBUG
 312         printf("SF: Got idcodes\n");
 313         print_buffer(0, idcode, 1, sizeof(idcode), 0);
 314 #endif
 315
 316         /* Validate ID's from flash dev table */
 317         idp = idcode;
 318         flash = spi_flash_validate_ids(spi, idp);
 319         if (!flash)
 320                 goto err_read_id;
 321
 322 #ifdef CONFIG_SPI_FLASH_BAR
 323         /* Configure the BAR - discover bank cmds and read current bank  */
 324         ret = spi_flash_bank_config(flash, *idp);
 325         if (ret < 0)
 326                 goto err_read_id;
 327 #endif
 328
 329 #ifdef CONFIG_OF_CONTROL
 330         if (spi_flash_decode_fdt(gd->fdt_blob, flash)) {
 331                 debug("SF: FDT decode error\n");
 332                 goto err_read_id;
 333         }
 334 #endif
 335 #ifndef CONFIG_SPL_BUILD
 336         printf("SF: Detected %s with page size ", flash->name);
 337         print_size(flash->sector_size, ", total ");
 338         print_size(flash->size, "");
 339         if (flash->memory_map)
 340                 printf(", mapped at %p", flash->memory_map);
 341         puts("\n");
 342 #endif
 343 #ifndef CONFIG_SPI_FLASH_BAR
 344         if (flash->size > SPI_FLASH_16MB_BOUN) {
 345                 puts("SF: Warning - Only lower 16MiB accessible,");
 346                 puts(" Full access #define CONFIG_SPI_FLASH_BAR\n");
 347         }
 348 #endif
 349
 350         /* Release spi bus */
 351         spi_release_bus(spi);
 352
 353         return flash;
 354
 355 err_read_id:
 356         spi_release_bus(spi);
 357 err_claim_bus:
 358         spi_free_slave(spi);
 359         return NULL;
 360 }
 361
 362 void spi_flash_free(struct spi_flash *flash)
 363 {
 364         spi_free_slave(flash->spi);
 365         free(flash);
 366 }