Merge branch 'sf' of git://git.denx.de/u-boot-blackfin

This commit is contained in:
Wolfgang Denk 2009-04-03 22:42:44 +02:00
commit ca41ef301b
7 changed files with 780 additions and 20 deletions

View File

@ -27,6 +27,8 @@ LIB := $(obj)libspi_flash.a
COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o
COBJS-$(CONFIG_SPI_FLASH_ATMEL) += atmel.o
COBJS-$(CONFIG_SPI_FLASH_SPANSION) += spansion.o
COBJS-$(CONFIG_SPI_FLASH_SST) += sst.o
COBJS-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.o
COBJS := $(COBJS-y)

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@ -3,7 +3,7 @@
*
* Copyright (C) 2008 Atmel Corporation
*/
#define DEBUG
#include <common.h>
#include <malloc.h>
#include <spi_flash.h>
@ -52,6 +52,54 @@ to_atmel_spi_flash(struct spi_flash *flash)
}
static const struct atmel_spi_flash_params atmel_spi_flash_table[] = {
{
.idcode1 = 0x22,
.l2_page_size = 8,
.pages_per_block = 8,
.blocks_per_sector = 16,
.nr_sectors = 4,
.name = "AT45DB011D",
},
{
.idcode1 = 0x23,
.l2_page_size = 8,
.pages_per_block = 8,
.blocks_per_sector = 16,
.nr_sectors = 8,
.name = "AT45DB021D",
},
{
.idcode1 = 0x24,
.l2_page_size = 8,
.pages_per_block = 8,
.blocks_per_sector = 32,
.nr_sectors = 8,
.name = "AT45DB041D",
},
{
.idcode1 = 0x25,
.l2_page_size = 8,
.pages_per_block = 8,
.blocks_per_sector = 32,
.nr_sectors = 16,
.name = "AT45DB081D",
},
{
.idcode1 = 0x26,
.l2_page_size = 9,
.pages_per_block = 8,
.blocks_per_sector = 32,
.nr_sectors = 16,
.name = "AT45DB161D",
},
{
.idcode1 = 0x27,
.l2_page_size = 9,
.pages_per_block = 8,
.blocks_per_sector = 64,
.nr_sectors = 64,
.name = "AT45DB321D",
},
{
.idcode1 = 0x28,
.l2_page_size = 10,

350
drivers/mtd/spi/spansion.c Normal file
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@ -0,0 +1,350 @@
/*
* Copyright (C) 2009 Freescale Semiconductor, Inc.
*
* Author: Mingkai Hu (Mingkai.hu@freescale.com)
* Based on stmicro.c by Wolfgang Denk (wd@denx.de),
* TsiChung Liew (Tsi-Chung.Liew@freescale.com),
* and Jason McMullan (mcmullan@netapp.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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <malloc.h>
#include <spi_flash.h>
#include "spi_flash_internal.h"
/* S25FLxx-specific commands */
#define CMD_S25FLXX_READ 0x03 /* Read Data Bytes */
#define CMD_S25FLXX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_S25FLXX_READID 0x90 /* Read Manufacture ID and Device ID */
#define CMD_S25FLXX_WREN 0x06 /* Write Enable */
#define CMD_S25FLXX_WRDI 0x04 /* Write Disable */
#define CMD_S25FLXX_RDSR 0x05 /* Read Status Register */
#define CMD_S25FLXX_WRSR 0x01 /* Write Status Register */
#define CMD_S25FLXX_PP 0x02 /* Page Program */
#define CMD_S25FLXX_SE 0xd8 /* Sector Erase */
#define CMD_S25FLXX_BE 0xc7 /* Bulk Erase */
#define CMD_S25FLXX_DP 0xb9 /* Deep Power-down */
#define CMD_S25FLXX_RES 0xab /* Release from DP, and Read Signature */
#define SPSN_ID_S25FL008A 0x0213
#define SPSN_ID_S25FL016A 0x0214
#define SPSN_ID_S25FL032A 0x0215
#define SPSN_ID_S25FL064A 0x0216
#define SPSN_ID_S25FL128P 0x2018
#define SPSN_EXT_ID_S25FL128P_256KB 0x0300
#define SPSN_EXT_ID_S25FL128P_64KB 0x0301
#define SPANSION_SR_WIP (1 << 0) /* Write-in-Progress */
struct spansion_spi_flash_params {
u16 idcode1;
u16 idcode2;
u16 page_size;
u16 pages_per_sector;
u16 nr_sectors;
const char *name;
};
struct spansion_spi_flash {
struct spi_flash flash;
const struct spansion_spi_flash_params *params;
};
static inline struct spansion_spi_flash *to_spansion_spi_flash(struct spi_flash
*flash)
{
return container_of(flash, struct spansion_spi_flash, flash);
}
static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
{
.idcode1 = SPSN_ID_S25FL008A,
.idcode2 = 0,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 16,
.name = "S25FL008A",
},
{
.idcode1 = SPSN_ID_S25FL016A,
.idcode2 = 0,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 32,
.name = "S25FL016A",
},
{
.idcode1 = SPSN_ID_S25FL032A,
.idcode2 = 0,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 64,
.name = "S25FL032A",
},
{
.idcode1 = SPSN_ID_S25FL064A,
.idcode2 = 0,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 128,
.name = "S25FL064A",
},
{
.idcode1 = SPSN_ID_S25FL128P,
.idcode2 = SPSN_EXT_ID_S25FL128P_64KB,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 256,
.name = "S25FL128P_64K",
},
{
.idcode1 = SPSN_ID_S25FL128P,
.idcode2 = SPSN_EXT_ID_S25FL128P_256KB,
.page_size = 256,
.pages_per_sector = 1024,
.nr_sectors = 64,
.name = "S25FL128P_256K",
},
};
static int spansion_wait_ready(struct spi_flash *flash, unsigned long timeout)
{
struct spi_slave *spi = flash->spi;
unsigned long timebase;
int ret;
u8 status;
timebase = get_timer(0);
do {
ret = spi_flash_cmd(spi, CMD_S25FLXX_RDSR, &status, sizeof(status));
if (ret)
return -1;
if ((status & SPANSION_SR_WIP) == 0)
break;
} while (get_timer(timebase) < timeout);
if ((status & SPANSION_SR_WIP) == 0)
return 0;
/* Timed out */
return -1;
}
static int spansion_read_fast(struct spi_flash *flash,
u32 offset, size_t len, void *buf)
{
struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash);
unsigned long page_addr;
unsigned long page_size;
u8 cmd[5];
page_size = spsn->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;
debug
("READ: 0x%x => cmd = { 0x%02x 0x%02x%02x%02x%02x } len = 0x%x\n",
offset, cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], len);
return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
}
static int spansion_write(struct spi_flash *flash,
u32 offset, size_t len, const void *buf)
{
struct spansion_spi_flash *spsn = to_spansion_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 = spsn->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_S25FLXX_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_S25FLXX_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: SPANSION Page Program failed\n");
break;
}
ret = spansion_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret < 0) {
debug("SF: SPANSION page programming timed out\n");
break;
}
page_addr++;
byte_addr = 0;
}
debug("SF: SPANSION: Successfully programmed %u bytes @ 0x%x\n",
len, offset);
spi_release_bus(flash->spi);
return ret;
}
int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
{
struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash);
unsigned long sector_size;
size_t actual;
int ret;
u8 cmd[4];
/*
* This function currently uses sector erase only.
* probably speed things up by using bulk erase
* when possible.
*/
sector_size = spsn->params->page_size * spsn->params->pages_per_sector;
if (offset % sector_size || len % sector_size) {
debug("SF: Erase offset/length not multiple of sector size\n");
return -1;
}
len /= sector_size;
cmd[0] = CMD_S25FLXX_SE;
cmd[2] = 0x00;
cmd[3] = 0x00;
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++) {
cmd[1] = (offset / sector_size) + actual;
ret = spi_flash_cmd(flash->spi, CMD_S25FLXX_WREN, NULL, 0);
if (ret < 0) {
debug("SF: Enabling Write failed\n");
break;
}
ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0);
if (ret < 0) {
debug("SF: SPANSION page erase failed\n");
break;
}
/* Up to 2 seconds */
ret = spansion_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
if (ret < 0) {
debug("SF: SPANSION page erase timed out\n");
break;
}
}
debug("SF: SPANSION: Successfully erased %u bytes @ 0x%x\n",
len * sector_size, offset);
spi_release_bus(flash->spi);
return ret;
}
struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
{
const struct spansion_spi_flash_params *params;
struct spansion_spi_flash *spsn;
unsigned int i;
unsigned short jedec, ext_jedec;
jedec = idcode[1] << 8 | idcode[2];
ext_jedec = idcode[3] << 8 | idcode[4];
for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) {
params = &spansion_spi_flash_table[i];
if (params->idcode1 == jedec) {
if (params->idcode2 == ext_jedec)
break;
}
}
if (i == ARRAY_SIZE(spansion_spi_flash_table)) {
debug("SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec);
return NULL;
}
spsn = malloc(sizeof(struct spansion_spi_flash));
if (!spsn) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
spsn->params = params;
spsn->flash.spi = spi;
spsn->flash.name = params->name;
spsn->flash.write = spansion_write;
spsn->flash.erase = spansion_erase;
spsn->flash.read = spansion_read_fast;
spsn->flash.size = params->page_size * params->pages_per_sector
* params->nr_sectors;
debug("SF: Detected %s with page size %u, total %u bytes\n",
params->name, params->page_size, spsn->flash.size);
return &spsn->flash;
}

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@ -3,7 +3,7 @@
*
* Copyright (C) 2008 Atmel Corporation
*/
#define DEBUG
#include <common.h>
#include <malloc.h>
#include <spi.h>
@ -101,7 +101,7 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
struct spi_slave *spi;
struct spi_flash *flash;
int ret;
u8 idcode[3];
u8 idcode[5];
spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
if (!spi) {
@ -120,8 +120,8 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
if (ret)
goto err_read_id;
debug("SF: Got idcode %02x %02x %02x\n", idcode[0],
idcode[1], idcode[2]);
debug("SF: Got idcode %02x %02x %02x %02x %02x\n", idcode[0],
idcode[1], idcode[2], idcode[3], idcode[4]);
switch (idcode[0]) {
#ifdef CONFIG_SPI_FLASH_SPANSION
@ -138,6 +138,11 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
case 0x20:
flash = spi_flash_probe_stmicro(spi, idcode);
break;
#endif
#ifdef CONFIG_SPI_FLASH_SST
case 0xBF:
flash = spi_flash_probe_sst(spi, idcode);
break;
#endif
default:
debug("SF: Unsupported manufacturer %02X\n", idcode[0]);

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@ -4,9 +4,12 @@
* Copyright (C) 2008 Atmel Corporation
*/
/* Common parameters */
#define SPI_FLASH_PROG_TIMEOUT ((10 * CONFIG_SYS_HZ) / 1000)
#define SPI_FLASH_PAGE_ERASE_TIMEOUT ((50 * CONFIG_SYS_HZ) / 1000)
/* Common parameters -- kind of high, but they should only occur when there
* is a problem (and well your system already is broken), so err on the side
* of caution in case we're dealing with slower SPI buses and/or processors.
*/
#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)
/* Common commands */
@ -43,4 +46,5 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
/* Manufacturer-specific probe functions */
struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode);
struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode);
struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);

358
drivers/mtd/spi/sst.c Normal file
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@ -0,0 +1,358 @@
/*
* Driver for SST serial flashes
*
* (C) Copyright 2000-2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* Copyright 2008, Network Appliance Inc.
* Jason McMullan <mcmullan@netapp.com>
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
* Copyright (c) 2008-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <malloc.h>
#include <spi_flash.h>
#include "spi_flash_internal.h"
#define CMD_SST_WREN 0x06 /* Write Enable */
#define CMD_SST_WRDI 0x04 /* Write Disable */
#define CMD_SST_RDSR 0x05 /* Read Status Register */
#define CMD_SST_WRSR 0x01 /* Write Status Register */
#define CMD_SST_READ 0x03 /* Read Data Bytes */
#define CMD_SST_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_SST_BP 0x02 /* Byte Program */
#define CMD_SST_AAI_WP 0xAD /* Auto Address Increment Word Program */
#define CMD_SST_SE 0x20 /* Sector Erase */
#define SST_SR_WIP (1 << 0) /* Write-in-Progress */
#define SST_SR_WEL (1 << 1) /* Write enable */
#define SST_SR_BP0 (1 << 2) /* Block Protection 0 */
#define SST_SR_BP1 (1 << 3) /* Block Protection 1 */
#define SST_SR_BP2 (1 << 4) /* Block Protection 2 */
#define SST_SR_AAI (1 << 6) /* Addressing mode */
#define SST_SR_BPL (1 << 7) /* BP bits lock */
struct sst_spi_flash_params {
u8 idcode1;
u16 nr_sectors;
const char *name;
};
struct sst_spi_flash {
struct spi_flash flash;
const struct sst_spi_flash_params *params;
};
static inline struct sst_spi_flash *to_sst_spi_flash(struct spi_flash *flash)
{
return container_of(flash, struct sst_spi_flash, flash);
}
#define SST_SECTOR_SIZE (4 * 1024)
static const struct sst_spi_flash_params sst_spi_flash_table[] = {
{
.idcode1 = 0x01,
.nr_sectors = 128,
.name = "SST25WF512",
},{
.idcode1 = 0x02,
.nr_sectors = 256,
.name = "SST25WF010",
},{
.idcode1 = 0x03,
.nr_sectors = 512,
.name = "SST25WF020",
},{
.idcode1 = 0x04,
.nr_sectors = 1024,
.name = "SST25WF040",
},
};
static int
sst_wait_ready(struct spi_flash *flash, unsigned long timeout)
{
struct spi_slave *spi = flash->spi;
unsigned long timebase;
int ret;
u8 byte = CMD_SST_RDSR;
ret = spi_xfer(spi, sizeof(byte) * 8, &byte, NULL, SPI_XFER_BEGIN);
if (ret) {
debug("SF: Failed to send command %02x: %d\n", byte, ret);
return ret;
}
timebase = get_timer(0);
do {
ret = spi_xfer(spi, sizeof(byte) * 8, NULL, &byte, 0);
if (ret)
break;
if ((byte & SST_SR_WIP) == 0)
break;
} while (get_timer(timebase) < timeout);
spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
if (!ret && (byte & SST_SR_WIP) != 0)
ret = -1;
if (ret)
debug("SF: sst wait for ready timed out\n");
return ret;
}
static int
sst_enable_writing(struct spi_flash *flash)
{
int ret = spi_flash_cmd(flash->spi, CMD_SST_WREN, NULL, 0);
if (ret)
debug("SF: Enabling Write failed\n");
return ret;
}
static int
sst_disable_writing(struct spi_flash *flash)
{
int ret = spi_flash_cmd(flash->spi, CMD_SST_WRDI, NULL, 0);
if (ret)
debug("SF: Disabling Write failed\n");
return ret;
}
static int
sst_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *buf)
{
u8 cmd[5] = {
CMD_READ_ARRAY_FAST,
offset >> 16,
offset >> 8,
offset,
0x00,
};
return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
}
static int
sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
{
int ret;
u8 cmd[4] = {
CMD_SST_BP,
offset >> 16,
offset >> 8,
offset,
};
debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
spi_w8r8(flash->spi, CMD_SST_RDSR), buf, cmd[0], offset);
ret = sst_enable_writing(flash);
if (ret)
return ret;
ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1);
if (ret)
return ret;
return sst_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
}
static int
sst_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf)
{
size_t actual, cmd_len;
int ret;
u8 cmd[4];
ret = spi_claim_bus(flash->spi);
if (ret) {
debug("SF: Unable to claim SPI bus\n");
return ret;
}
/* If the data is not word aligned, write out leading single byte */
actual = offset % 2;
if (actual) {
ret = sst_byte_write(flash, offset, buf);
if (ret)
goto done;
}
offset += actual;
ret = sst_enable_writing(flash);
if (ret)
goto done;
cmd_len = 4;
cmd[0] = CMD_SST_AAI_WP;
cmd[1] = offset >> 16;
cmd[2] = offset >> 8;
cmd[3] = offset;
for (; actual < len - 1; actual += 2) {
debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
spi_w8r8(flash->spi, CMD_SST_RDSR), buf + actual, cmd[0],
offset);
ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len,
buf + actual, 2);
if (ret) {
debug("SF: sst word program failed\n");
break;
}
ret = sst_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
break;
cmd_len = 1;
offset += 2;
}
if (!ret)
ret = sst_disable_writing(flash);
/* If there is a single trailing byte, write it out */
if (!ret && actual != len)
ret = sst_byte_write(flash, offset, buf + actual);
done:
debug("SF: sst: program %s %zu bytes @ 0x%zx\n",
ret ? "failure" : "success", len, offset - actual);
spi_release_bus(flash->spi);
return ret;
}
int
sst_erase(struct spi_flash *flash, u32 offset, size_t len)
{
unsigned long sector_size;
u32 start, end;
int ret;
u8 cmd[4];
/*
* This function currently uses sector erase only.
* Probably speed things up by using bulk erase
* when possible.
*/
sector_size = SST_SECTOR_SIZE;
if (offset % sector_size) {
debug("SF: Erase offset not multiple of sector size\n");
return -1;
}
ret = spi_claim_bus(flash->spi);
if (ret) {
debug("SF: Unable to claim SPI bus\n");
return ret;
}
cmd[0] = CMD_SST_SE;
cmd[3] = 0;
start = offset;
end = start + len;
ret = 0;
while (offset < end) {
cmd[1] = offset >> 16;
cmd[2] = offset >> 8;
offset += sector_size;
debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
cmd[2], cmd[3], offset);
ret = sst_enable_writing(flash);
if (ret)
break;
ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0);
if (ret) {
debug("SF: sst page erase failed\n");
break;
}
ret = sst_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
if (ret)
break;
}
debug("SF: sst: Successfully erased %lu bytes @ 0x%x\n",
len * sector_size, start);
spi_release_bus(flash->spi);
return ret;
}
static int
sst_unlock(struct spi_flash *flash)
{
int ret;
u8 cmd, status;
ret = sst_enable_writing(flash);
if (ret)
return ret;
cmd = CMD_SST_WRSR;
status = 0;
ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &status, 1);
if (ret)
debug("SF: Unable to set status byte\n");
debug("SF: sst: status = %x\n", spi_w8r8(flash->spi, CMD_SST_RDSR));
return ret;
}
struct spi_flash *
spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode)
{
const struct sst_spi_flash_params *params;
struct sst_spi_flash *stm;
size_t i;
for (i = 0; i < ARRAY_SIZE(sst_spi_flash_table); ++i) {
params = &sst_spi_flash_table[i];
if (params->idcode1 == idcode[2])
break;
}
if (i == ARRAY_SIZE(sst_spi_flash_table)) {
debug("SF: Unsupported SST ID %02x\n", idcode[1]);
return NULL;
}
stm = malloc(sizeof(*stm));
if (!stm) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
stm->params = params;
stm->flash.spi = spi;
stm->flash.name = params->name;
stm->flash.write = sst_write;
stm->flash.erase = sst_erase;
stm->flash.read = sst_read_fast;
stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors;
debug("SF: Detected %s with page size %u, total %u bytes\n",
params->name, SST_SECTOR_SIZE, stm->flash.size);
/* Flash powers up read-only, so clear BP# bits */
sst_unlock(&stm->flash);
return &stm->flash;
}

View File

@ -133,12 +133,12 @@ static int stmicro_wait_ready(struct spi_flash *flash, unsigned long timeout)
struct spi_slave *spi = flash->spi;
unsigned long timebase;
int ret;
u8 cmd = CMD_M25PXX_RDSR;
u8 status;
u8 cmd[4] = { CMD_M25PXX_RDSR, 0xff, 0xff, 0xff };
ret = spi_xfer(spi, 32, &cmd[0], NULL, SPI_XFER_BEGIN);
ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
if (ret) {
debug("SF: Failed to send command %02x: %d\n", cmd[0], ret);
debug("SF: Failed to send command %02x: %d\n", cmd, ret);
return ret;
}
@ -295,8 +295,7 @@ int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
break;
}
/* Up to 2 seconds */
ret = stmicro_wait_ready(flash, 2 * CONFIG_SYS_HZ);
ret = stmicro_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
if (ret < 0) {
debug("SF: STMicro page erase timed out\n");
break;
@ -315,12 +314,6 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
const struct stmicro_spi_flash_params *params;
struct stmicro_spi_flash *stm;
unsigned int i;
int ret;
u8 id[3];
ret = spi_flash_cmd(spi, CMD_READ_ID, id, sizeof(id));
if (ret)
return NULL;
for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
params = &stmicro_spi_flash_table[i];
@ -330,7 +323,7 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
}
if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
debug("SF: Unsupported STMicro ID %02x\n", id[1]);
debug("SF: Unsupported STMicro ID %02x\n", idcode[1]);
return NULL;
}