drivers/mtd/spi/macronix.c

   1 /*
   2  * Copyright 2009(C) Marvell International Ltd. and its affiliates
   3  * Prafulla Wadaskar <prafulla@marvell.com>
   4  *
   5  * Based on drivers/mtd/spi/stmicro.c
   6  *
   7  * Copyright 2008, Network Appliance Inc.
   8  * Jason McMullan <mcmullan@netapp.com>
   9  *
  10  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
  11  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
  12  *
  13  * See file CREDITS for list of people who contributed to this
  14  * project.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License as
  18  * published by the Free Software Foundation; either version 2 of
  19  * the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  29  * MA 02110-1301 USA
  30  */
  31
  32 #include <common.h>
  33 #include <malloc.h>
  34 #include <spi_flash.h>
  35
  36 #include "spi_flash_internal.h"
  37
  38 struct macronix_spi_flash_params {
  39         u16 idcode;
  40         u16 nr_blocks;
  41         const char *name;
  42 };
  43
  44 static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
  45         {
  46                 .idcode = 0x2013,
  47                 .nr_blocks = 8,
  48                 .name = "MX25L4005",
  49         },
  50         {
  51                 .idcode = 0x2014,
  52                 .nr_blocks = 16,
  53                 .name = "MX25L8005",
  54         },
  55         {
  56                 .idcode = 0x2015,
  57                 .nr_blocks = 32,
  58                 .name = "MX25L1605D",
  59         },
  60         {
  61                 .idcode = 0x2016,
  62                 .nr_blocks = 64,
  63                 .name = "MX25L3205D",
  64         },
  65         {
  66                 .idcode = 0x2017,
  67                 .nr_blocks = 128,
  68                 .name = "MX25L6405D",
  69         },
  70         {
  71                 .idcode = 0x2018,
  72                 .nr_blocks = 256,
  73                 .name = "MX25L12805D",
  74         },
  75         {
  76                 .idcode = 0x2618,
  77                 .nr_blocks = 256,
  78                 .name = "MX25L12855E",
  79         },
  80 };
  81
  82 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
  83 {
  84         const struct macronix_spi_flash_params *params;
  85         struct spi_flash *flash;
  86         unsigned int i;
  87         u16 id = idcode[2] | idcode[1] << 8;
  88
  89         for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) {
  90                 params = &macronix_spi_flash_table[i];
  91                 if (params->idcode == id)
  92                         break;
  93         }
  94
  95         if (i == ARRAY_SIZE(macronix_spi_flash_table)) {
  96                 debug("SF: Unsupported Macronix ID %04x\n", id);
  97                 return NULL;
  98         }
  99
 100         flash = malloc(sizeof(*flash));
 101         if (!flash) {
 102                 debug("SF: Failed to allocate memory\n");
 103                 return NULL;
 104         }
 105
 106         flash->spi = spi;
 107         flash->name = params->name;
 108
 109         flash->write = spi_flash_cmd_write_multi;
 110         flash->erase = spi_flash_cmd_erase;
 111         flash->read = spi_flash_cmd_read_fast;
 112         flash->page_size = 256;
 113         flash->sector_size = 256 * 16 * 16;
 114         flash->size = flash->sector_size * params->nr_blocks;
 115
 116         /* Clear BP# bits for read-only flash */
 117         spi_flash_cmd_write_status(flash, 0);
 118
 119         return flash;
 120 }