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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_WREN 0x06 /* Write Enable */
#define CMD_MX25XX_WRDI 0x04 /* Write Disable */
#define CMD_MX25XX_RDSR 0x05 /* Read Status Register */
#define CMD_MX25XX_WRSR 0x01 /* Write Status Register */
#define CMD_MX25XX_READ 0x03 /* Read Data Bytes */
#define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_MX25XX_PP 0x02 /* Page Program */
#define CMD_MX25XX_SE 0x20 /* Sector Erase */
#define CMD_MX25XX_BE 0xD8 /* Block Erase */
#define CMD_MX25XX_CE 0xc7 /* Chip Erase */
#define CMD_MX25XX_DP 0xb9 /* Deep Power-down */
#define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */
struct macronix_spi_flash_params {
u16 idcode;
u16 page_size;
u16 pages_per_sector;
u16 sectors_per_block;
u16 nr_blocks;
const char *name;
};
struct macronix_spi_flash {
struct spi_flash flash;
const struct macronix_spi_flash_params *params;
};
static inline struct macronix_spi_flash *to_macronix_spi_flash(struct spi_flash
*flash)
{
return container_of(flash, struct macronix_spi_flash, flash);
}
static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
{
.idcode = 0x2015,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "MX25L1605D",
},
{
.idcode = 0x2016,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 64,
.name = "MX25L3205D",
},
{
.idcode = 0x2017,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 128,
.name = "MX25L6405D",
},
{
.idcode = 0x2018,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12805D",
},
{
.idcode = 0x2618,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12855E",
},
};
static int macronix_read_fast(struct spi_flash *flash,
u32 offset, size_t len, void *buf)
{
struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
unsigned long page_addr;
unsigned long page_size;
u8 cmd[5];
page_size = mcx->params->page_size;
page_addr = offset / page_size;
cmd[0] = CMD_READ_ARRAY_FAST;
cmd[1] = page_addr >> 8;
cmd[2] = page_addr;
cmd[3] = offset % page_size;
cmd[4] = 0x00;
return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
}
static int macronix_write(struct spi_flash *flash,
u32 offset, size_t len, const void *buf)
{
struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
unsigned long page_addr;
unsigned long byte_addr;
unsigned long page_size;
size_t chunk_len;
size_t actual;
int ret;
u8 cmd[4];
page_size = mcx->params->page_size;
page_addr = offset / page_size;
byte_addr = offset % page_size;
ret = spi_claim_bus(flash->spi);
if (ret) {
debug("SF: Unable to claim SPI bus\n");
return ret;
}
ret = 0;
for (actual = 0; actual < len; actual += chunk_len) {
chunk_len = min(len - actual, page_size - byte_addr);
cmd[0] = CMD_MX25XX_PP;
cmd[1] = page_addr >> 8;
cmd[2] = page_addr;
cmd[3] = byte_addr;
debug
("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
ret = spi_flash_cmd(flash->spi, CMD_MX25XX_WREN, NULL, 0);
if (ret < 0) {
debug("SF: Enabling Write failed\n");
break;
}
ret = spi_flash_cmd_write(flash->spi, cmd, 4,
buf + actual, chunk_len);
if (ret < 0) {
debug("SF: Macronix Page Program failed\n");
break;
}
ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
break;
page_addr++;
byte_addr = 0;
}
debug("SF: Macronix: Successfully programmed %u bytes @ 0x%x\n",
len, offset);
spi_release_bus(flash->spi);
return ret;
}
int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
{
struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
return spi_flash_cmd_erase(flash, CMD_MX25XX_BE,
mcx->params->page_size * mcx->params->pages_per_sector *
mcx->params->sectors_per_block,
offset, len);
}
struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
{
const struct macronix_spi_flash_params *params;
struct macronix_spi_flash *mcx;
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;
}
mcx = malloc(sizeof(*mcx));
if (!mcx) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
mcx->params = params;
mcx->flash.spi = spi;
mcx->flash.name = params->name;
mcx->flash.write = macronix_write;
mcx->flash.erase = macronix_erase;
mcx->flash.read = macronix_read_fast;
mcx->flash.size = params->page_size * params->pages_per_sector
* params->sectors_per_block * params->nr_blocks;
printf("SF: Detected %s with page size %u, total ",
params->name, params->page_size);
print_size(mcx->flash.size, "\n");
return &mcx->flash;
}
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