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/*
* Copyright 2009(C) Marvell International Ltd. and its affiliates
* Prafulla Wadaskar <prafulla@marvell.com>
*
* Based on drivers/mtd/spi/stmicro.c
*
* Copyright 2008, Network Appliance Inc.
* Jason McMullan <mcmullan@netapp.com>
*
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <malloc.h>
#include <spi_flash.h>
#include "spi_flash_internal.h"
/* MX25xx-specific commands */
#define CMD_MX25XX_SE 0x20 /* Sector Erase */
#define CMD_MX25XX_BE 0xD8 /* Block Erase */
#define CMD_MX25XX_CE 0xc7 /* Chip Erase */
struct macronix_spi_flash_params {
u16 idcode;
u16 nr_blocks;
const char *name;
};
static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
{
.idcode = 0x2013,
.nr_blocks = 8,
.name = "MX25L4005",
},
{
.idcode = 0x2014,
.nr_blocks = 16,
.name = "MX25L8005",
},
{
.idcode = 0x2015,
.nr_blocks = 32,
.name = "MX25L1605D",
},
{
.idcode = 0x2016,
.nr_blocks = 64,
.name = "MX25L3205D",
},
{
.idcode = 0x2017,
.nr_blocks = 128,
.name = "MX25L6405D",
},
{
.idcode = 0x2018,
.nr_blocks = 256,
.name = "MX25L12805D",
},
{
.idcode = 0x2618,
.nr_blocks = 256,
.name = "MX25L12855E",
},
};
static int macronix_write_status(struct spi_flash *flash, u8 sr)
{
u8 cmd;
int ret;
ret = spi_flash_cmd_write_enable(flash);
if (ret < 0) {
debug("SF: enabling write failed\n");
return ret;
}
cmd = CMD_WRITE_STATUS;
ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1);
if (ret) {
debug("SF: fail to write status register\n");
return ret;
}
ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret < 0) {
debug("SF: write status register timed out\n");
return ret;
}
return 0;
}
static int macronix_unlock(struct spi_flash *flash)
{
int ret;
/* Enable status register writing and clear BP# bits */
ret = macronix_write_status(flash, 0);
if (ret)
debug("SF: fail to disable write protection\n");
return ret;
}
static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
}
struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
{
const struct macronix_spi_flash_params *params;
struct spi_flash *flash;
unsigned int i;
u16 id = idcode[2] | idcode[1] << 8;
for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) {
params = ¯onix_spi_flash_table[i];
if (params->idcode == id)
break;
}
if (i == ARRAY_SIZE(macronix_spi_flash_table)) {
debug("SF: Unsupported Macronix ID %04x\n", id);
return NULL;
}
flash = malloc(sizeof(*flash));
if (!flash) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
flash->spi = spi;
flash->name = params->name;
flash->write = spi_flash_cmd_write_multi;
flash->erase = macronix_erase;
flash->read = spi_flash_cmd_read_fast;
flash->page_size = 256;
flash->sector_size = 256 * 16 * 16;
flash->size = flash->sector_size * params->nr_blocks;
/* Clear BP# bits for read-only flash */
macronix_unlock(flash);
return flash;
}
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