upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
356 lines
8.7 KiB
356 lines
8.7 KiB
/*
|
|
* 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;
|
|
int ret;
|
|
u8 id[5] = {0};
|
|
|
|
ret = spi_flash_cmd(spi, CMD_READ_ID, id, sizeof(id));
|
|
if (ret)
|
|
return NULL;
|
|
|
|
jedec = id[1] << 8 | id[2];
|
|
ext_jedec = id[3] << 8 | id[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;
|
|
}
|
|
|