u-boot/drivers/mtd/spi/macronix.c
Mike Frysinger 41e1713425 sf: unify status register writing (and thus block unlocking)
The only two drivers to write the status register do it in the same
way, so unify the implementations.  This also makes the block unlock
logic the same.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-03-04 23:18:17 -05:00

120 lines
2.8 KiB
C

/*
* 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"
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",
},
};
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 = &macronix_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 = spi_flash_cmd_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 */
spi_flash_cmd_write_status(flash, 0);
return flash;
}