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