This driver is ported from kernel and can handle a series of spi nor
flash including m25pxx, m45pxx, w25xxx, cat25xxx, sst25vf0xxx,
sst25wfxxx, s25xxx, mx25xxx, at25xxx, at26xxx, en25xxx, xxxs33b.
Signed-off-by: Terry Lv <r65...@freescale.com>
---
drivers/mtd/spi/Makefile | 1 +
drivers/mtd/spi/m25p80.c | 896 ++++++++++++++++++++++++++++++++++
drivers/mtd/spi/spi_flash.c | 10 +
drivers/mtd/spi/spi_flash_internal.h | 1 +
4 files changed, 908 insertions(+), 0 deletions(-)
create mode 100644 drivers/mtd/spi/m25p80.c
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile
index 57112af..1621a61 100644
--- a/drivers/mtd/spi/Makefile
+++ b/drivers/mtd/spi/Makefile
@@ -28,6 +28,7 @@ LIB := $(obj)libspi_flash.o
COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o
COBJS-$(CONFIG_SPI_FLASH_ATMEL) += atmel.o
COBJS-$(CONFIG_SPI_FLASH_EON) += eon.o
+COBJS-$(CONFIG_SPI_FLASH_M25P80) += m25p80.o
COBJS-$(CONFIG_SPI_FLASH_MACRONIX) += macronix.o
COBJS-$(CONFIG_SPI_FLASH_SPANSION) += spansion.o
COBJS-$(CONFIG_SPI_FLASH_SST) += sst.o
diff --git a/drivers/mtd/spi/m25p80.c b/drivers/mtd/spi/m25p80.c
new file mode 100644
index 0000000..1d87793
--- /dev/null
+++ b/drivers/mtd/spi/m25p80.c
@@ -0,0 +1,896 @@
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+/*
+ * MTD SPI driver for ST M25Pxx (and similar) serial flash chips
+ *
+ * Author: Mike Lavender, m...@steroidmicros.com
+ *
+ * Copyright (c) 2005, Intec Automation Inc.
+ *
+ * Some parts are based on lart.c by Abraham Van Der Merwe
+ *
+ * Cleaned up and generalized based on mtd_dataflash.c
+ *
+ * This code is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <common.h>
+#include <spi.h>
+#include <spi_flash.h>
+#include <asm/errno.h>
+#include <linux/types.h>
+#include <malloc.h>
+
+#include "spi_flash_internal.h"
+
+/* CFI */
+#define CFI_MFR_ANY 0xFFFF
+#define CFI_ID_ANY 0xFFFF
+#define CFI_MFR_CONTINUATION 0x007F
+
+#define CFI_MFR_AMD 0x0001
+#define CFI_MFR_AMIC 0x0037
+#define CFI_MFR_ATMEL 0x001F
+#define CFI_MFR_EON 0x001C
+#define CFI_MFR_FUJITSU 0x0004
+#define CFI_MFR_HYUNDAI 0x00AD
+#define CFI_MFR_INTEL 0x0089
+#define CFI_MFR_MACRONIX 0x00C2
+#define CFI_MFR_NEC 0x0010
+#define CFI_MFR_PMC 0x009D
+#define CFI_MFR_SAMSUNG 0x00EC
+#define CFI_MFR_SHARP 0x00B0
+#define CFI_MFR_SST 0x00BF
+#define CFI_MFR_ST 0x0020 /* STMicroelectronics */
+#define CFI_MFR_TOSHIBA 0x0098
+#define CFI_MFR_WINBOND 0x00DA
+
+/* Flash opcodes. */
+#define OPCODE_WREN 0x06 /* Write enable */
+#define OPCODE_RDSR 0x05 /* Read status register */
+#define OPCODE_WRSR 0x01 /* Write status register 1 byte
*/
+#define OPCODE_NORM_READ 0x03 /* Read data bytes (low
frequency) */
+#define OPCODE_FAST_READ 0x0b /* Read data bytes (high
frequency) */
+#define OPCODE_PP 0x02 /* Page program (up to 256
bytes) */
+#define OPCODE_BE_4K 0x20 /* Erase 4KiB block */
+#define OPCODE_BE_32K 0x52 /* Erase 32KiB block */
+#define OPCODE_CHIP_ERASE 0xc7 /* Erase whole flash chip */
+#define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB)
*/
+#define OPCODE_RDID 0x9f /* Read JEDEC ID */
+
+/* Used for SST flashes only. */
+#define OPCODE_BP 0x02 /* Byte program */
+#define OPCODE_WRDI 0x04 /* Write disable */
+#define OPCODE_AAI_WP 0xad /* Auto address increment word
program */
+
+/* Used for Macronix flashes only. */
+#define OPCODE_EN4B 0xb7 /* Enter 4-byte mode */
+#define OPCODE_EX4B 0xe9 /* Exit 4-byte mode */
+
+/* Used for Spansion flashes only. */
+#define OPCODE_BRWR 0x17 /* Bank register write */
+
+/* Status Register bits. */
+#define SR_WIP 1 /* Write in progress */
+#define SR_WEL 2 /* Write enable latch */
+/* meaning of other SR_* bits may differ between vendors */
+#define SR_BP0 4 /* Block protect 0 */
+#define SR_BP1 8 /* Block protect 1 */
+#define SR_BP2 0x10 /* Block protect 2 */
+#define SR_SRWD 0x80 /* SR write protect */
+
+/* Define max times to check status register before we give up. */
+#define MAX_READY_WAIT_JIFFIES (40 * HZ) /* M25P16 specs 40s max
chip erase */
+#define MAX_CMD_SIZE 5
+
+#ifdef CONFIG_M25PXX_USE_FAST_READ
+#define OPCODE_READ OPCODE_FAST_READ
+#define FAST_READ_DUMMY_BYTE 1
+#else
+#define OPCODE_READ OPCODE_NORM_READ
+#define FAST_READ_DUMMY_BYTE 0
+#endif
+
+#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16)
+
+/****************************************************************************/
+
+struct m25p_spi_flash {
+ struct spi_flash flash;
+ u16 page_size;
+ u16 addr_width;
+ u32 erase_size;
+ u8 erase_opcode;
+};
+
+static inline struct m25p_spi_flash *to_m25p_spi_flash(struct spi_flash *flash)
+{
+ return container_of(flash, struct m25p_spi_flash, flash);
+}
+
+/****************************************************************************/
+
+/*
+ * Internal helper functions
+ */
+
+/*
+ * Read the status register, returning its value in the location
+ * Return the status register value.
+ * Returns negative if error occurred.
+ */
+static int read_sr(struct spi_flash *flash)
+{
+ int ret;
+ u8 code = OPCODE_RDSR;
+ u8 stat = 0;
+
+ ret = spi_flash_cmd(flash->spi, code, &stat, 1);
+ if (ret)
+ return ret;
+
+ debug("flash status: 0x%x\n", stat);
+
+ return (int)stat;
+}
+
+/*
+ * Write status register 1 byte
+ * Returns negative if error occurred.
+ */
+static int write_sr(struct spi_flash *flash, u8 val)
+{
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+
+ cmd[0] = OPCODE_WRSR;
+ cmd[1] = val;
+
+ return spi_flash_cmd_write(flash->spi, cmd, 2, NULL, 0);
+}
+
+/*
+ * Set write enable latch with Write Enable command.
+ * Returns negative if error occurred.
+ */
+static inline int write_enable(struct spi_flash *flash)
+{
+ u8 code = OPCODE_WREN;
+
+ return spi_flash_cmd(flash->spi, code, NULL, 0);
+}
+
+/*
+ * Send write disble instruction to the chip.
+ */
+static inline int write_disable(struct spi_flash *flash)
+{
+ u8 code = OPCODE_WRDI;
+
+ return spi_flash_cmd(flash->spi, code, NULL, 0);
+}
+
+/*
+ * Enable/disable 4-byte addressing mode.
+ */
+static inline int set_4byte(struct spi_flash *flash, u32 jedec_id, int enable)
+{
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+
+ switch (JEDEC_MFR(jedec_id)) {
+ case CFI_MFR_MACRONIX:
+ cmd[0] = enable ? OPCODE_EN4B : OPCODE_EX4B;
+ return spi_flash_cmd_write(flash->spi, cmd, 1, NULL, 0);
+ default:
+ /* Spansion style */
+ cmd[0] = OPCODE_BRWR;
+ cmd[1] = enable << 7;
+ return spi_flash_cmd_write(flash->spi, cmd, 2, NULL, 0);
+ }
+}
+
+/*
+ * Service routine to read status register until ready, or timeout occurs.
+ * Returns non-zero if error.
+ */
+static int wait_till_ready(struct spi_flash *flash)
+{
+ int sr;
+ int times = 10000;
+
+ do {
+ sr = read_sr(flash);
+ if (sr < 0)
+ break;
+ else if (!(sr & SR_WIP))
+ return 0;
+
+ udelay(100);
+ } while (times--);
+
+ return 1;
+}
+
+/*
+ * Erase the whole flash memory
+ *
+ * Returns 0 if successful, non-zero otherwise.
+ */
+static int erase_chip(struct spi_flash *flash)
+{
+ s32 ret = 0;
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+
+ /* Wait until finished previous write command. */
+ if (wait_till_ready(flash)) {
+ printf("SF: timeout for ready!\n");
+ return 1;
+ }
+
+ /* Send write enable, then erase commands. */
+ ret = write_enable(flash);
+ if (ret < 0) {
+ printf("SF: Write enable failed\n");
+ return ret;
+ }
+
+ /* Set up command buffer. */
+ cmd[0] = OPCODE_CHIP_ERASE;
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, 1, NULL, 0);
+ if (ret)
+ printf("SF: whole chip erase failed\n");
+
+ return 0;
+}
+
+static void m25p_addr2cmd(struct m25p_spi_flash *flash,
+ unsigned int addr, u8 *cmd)
+{
+ /* opcode is in cmd[0] */
+ cmd[1] = addr >> (flash->addr_width * 8 - 8);
+ cmd[2] = addr >> (flash->addr_width * 8 - 16);
+ cmd[3] = addr >> (flash->addr_width * 8 - 24);
+ cmd[4] = addr >> (flash->addr_width * 8 - 32);
+}
+
+static int m25p_cmdsz(struct m25p_spi_flash *flash)
+{
+ return 1 + flash->addr_width;
+}
+
+/*
+ * Erase one sector of flash memory at offset ``offset'' which is any
+ * address within the sector which should be erased.
+ *
+ * Returns 0 if successful, non-zero otherwise.
+ */
+static int erase_sector(struct spi_flash *flash, u32 offset)
+{
+ s32 ret = 0;
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+ struct m25p_spi_flash *m25p = to_m25p_spi_flash(flash);
+
+ /* Wait until finished previous write command. */
+ if (wait_till_ready(flash)) {
+ printf("SF: timeout for ready: 0x%x!\n", offset);
+ return 1;
+ }
+
+ /* Send write enable, then erase commands. */
+ ret = write_enable(flash);
+ if (ret < 0) {
+ printf("SF: Write enable failed\n");
+ return ret;
+ }
+
+ /* Set up command buffer. */
+ cmd[0] = m25p->erase_opcode;
+ m25p_addr2cmd(m25p, offset, cmd);
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, m25p_cmdsz(m25p),
+ NULL, 0);
+ if (ret)
+ printf("SF: page erase failed\n");
+
+ return 0;
+}
+
+/*
+ * Erase an address range on the flash chip. The address range may extend
+ * one or more erase sectors. Return an error is there is a problem erasing.
+ */
+static int m25p80_erase(struct spi_flash *flash, u32 offset, size_t len)
+{
+ struct m25p_spi_flash *m25p = to_m25p_spi_flash(flash);
+ int ret = 0;
+
+ /* sanity checks */
+ if (offset + len > flash->size) {
+ printf("Size out of range!\n");
+ return -EINVAL;
+ }
+
+ if (len % m25p->erase_size) {
+ printf("Erase len not 0x%x aligned!", m25p->erase_size);
+ return -EINVAL;
+ }
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ printf("SF: Unable to claim SPI bus\n");
+ return ret;
+ }
+
+ /* whole-chip erase? */
+ if (len == flash->size) {
+ ret = erase_chip(flash);
+ } else {
+ while (len) {
+ ret = erase_sector(flash, offset);
+ if (ret)
+ break;
+
+ offset += m25p->erase_size;
+ len -= m25p->erase_size;
+ }
+ }
+
+ spi_release_bus(flash->spi);
+ return ret;
+}
+
+/*
+ * Read an address range from the flash chip. The address range
+ * may be any size provided it is within the physical boundaries.
+ */
+static int m25p80_read(struct spi_flash *flash, u32 offset, size_t len,
+ void *buf)
+{
+ struct m25p_spi_flash *m25p = to_m25p_spi_flash(flash);
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+ int cmd_sz;
+
+ /* sanity checks */
+ if (!len)
+ return 0;
+
+ if (offset + len > flash->size) {
+ printf("Size out of range!\n");
+ return -EINVAL;
+ }
+
+ /* NOTE:
+ * OPCODE_FAST_READ (if available) is faster.
+ * Should add 1 byte DUMMY_BYTE.
+ */
+ cmd_sz = m25p_cmdsz(m25p) + FAST_READ_DUMMY_BYTE;
+
+ /* Wait till previous write/erase is done. */
+ if (wait_till_ready(flash)) {
+ printf("SF: timeout for ready!\n");
+ /* REVISIT status return?? */
+ return 1;
+ }
+
+ /* FIXME switch to OPCODE_FAST_READ. It's required for higher
+ * clocks; and at this writing, every chip this driver handles
+ * supports that opcode.
+ */
+
+ /* Set up the write data buffer. */
+ cmd[0] = OPCODE_READ;
+ m25p_addr2cmd(m25p, offset, cmd);
+
+ return spi_flash_read_common(flash, cmd, cmd_sz, buf, len);
+}
+
+/*
+ * Write an address range to the flash chip. Data must be written in
+ * FLASH_PAGESIZE chunks. The address range may be any size provided
+ * it is within the physical boundaries.
+ */
+static int m25p80_write(struct spi_flash *flash, u32 offset, size_t len,
+ const void *buf)
+{
+ struct m25p_spi_flash *m25p = to_m25p_spi_flash(flash);
+ u32 page_offset, page_size;
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+ int cmd_sz, ret;
+
+ /* sanity checks */
+ if (!len)
+ return 0;
+
+ if (offset + len > flash->size) {
+ printf("Size out of range!\n");
+ return -EINVAL;
+ }
+
+ cmd_sz = m25p_cmdsz(m25p);
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ printf("SF: Unable to claim SPI bus\n");
+ return ret;
+ }
+ /* Wait until finished previous write command. */
+ if (wait_till_ready(flash)) {
+ printf("SF: timeout for ready!\n");
+ goto done;
+ }
+
+ ret = write_enable(flash);
+ if (ret < 0) {
+ printf("SF: Write enable failed\n");
+ goto done;
+ }
+
+ /* Set up the opcode in the write buffer. */
+ cmd[0] = OPCODE_PP;
+ m25p_addr2cmd(m25p, offset, cmd);
+
+ page_offset = offset & (m25p->page_size - 1);
+
+ /* do all the bytes fit onto one page? */
+ if (page_offset + len <= m25p->page_size) {
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf, len);
+ if (ret)
+ printf("SF: m25p program failed\n");
+ } else {
+ u32 i;
+
+ /* the size of data remaining on the first page */
+ page_size = m25p->page_size - page_offset;
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf, page_size);
+ if (ret)
+ printf("SF: m25p program failed\n");
+ /* write everything in flash->page_size chunks */
+ for (i = page_size; i < len; i += page_size) {
+ page_size = len - i;
+ if (page_size > m25p->page_size)
+ page_size = m25p->page_size;
+
+ /* write the next page to flash */
+ m25p_addr2cmd(m25p, offset + i, cmd);
+
+ if (wait_till_ready(flash)) {
+ printf("SF: timeout for ready: 0x%x!\n",
+ (offset + i));
+ goto done;
+ }
+
+ ret = write_enable(flash);
+ if (ret < 0) {
+ printf("SF: Write enable failed\n");
+ goto done;
+ }
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf + i, page_size);
+ if (ret)
+ printf("SF: m25p program failed\n");
+ }
+ }
+
+done:
+ spi_release_bus(flash->spi);
+ return ret;
+}
+
+static int sst_write(struct spi_flash *flash, u32 offset, size_t len,
+ const void *buf)
+{
+ struct m25p_spi_flash *m25p = to_m25p_spi_flash(flash);
+ size_t actual;
+ int cmd_sz, ret;
+ u8 cmd[MAX_CMD_SIZE + FAST_READ_DUMMY_BYTE] = { 0 };
+
+ /* sanity checks */
+ if (!len)
+ return 0;
+
+ if (offset + len > flash->size)
+ return -EINVAL;
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ printf("SF: Unable to claim SPI bus\n");
+ return ret;
+ }
+ /* Wait until finished previous write command. */
+ ret = wait_till_ready(flash);
+ if (ret) {
+ printf("SF: timeout for ready!\n");
+ goto time_out;
+ }
+
+ ret = write_enable(flash);
+ if (ret < 0) {
+ printf("SF: Write enable failed\n");
+ goto time_out;
+ }
+
+ actual = offset % 2;
+ /* Start write from odd address. */
+ if (actual) {
+ cmd[0] = OPCODE_BP;
+ m25p_addr2cmd(m25p, offset, cmd);
+ cmd_sz = m25p_cmdsz(m25p);
+
+ /* write one byte. */
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf, 1);
+ ret = wait_till_ready(flash);
+ if (ret) {
+ printf("SF: timeout for ready!\n");
+ goto time_out;
+ }
+ }
+ offset += actual;
+
+ cmd[0] = OPCODE_AAI_WP;
+ m25p_addr2cmd(m25p, offset, cmd);
+
+ /* Write out most of the data here. */
+ cmd_sz = m25p_cmdsz(m25p);
+ for (; actual < len - 1; actual += 2) {
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf + actual, 2);
+ if (ret) {
+ printf("SF: sst word program failed\n");
+ break;
+ }
+ ret = wait_till_ready(flash);
+ if (ret) {
+ printf("SF: timeout for ready!\n");
+ goto time_out;
+ }
+ cmd_sz = 1;
+ offset += 2;
+ }
+ write_disable(flash);
+ ret = wait_till_ready(flash);
+ if (ret) {
+ printf("SF: timeout for ready!\n");
+ goto time_out;
+ }
+
+ /* Write out trailing byte if it exists. */
+ if (actual != len) {
+ write_enable(flash);
+ cmd[0] = OPCODE_BP;
+ m25p_addr2cmd(m25p, offset, cmd);
+ cmd_sz = m25p_cmdsz(m25p);
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, cmd_sz,
+ buf + actual, 1);
+ if (ret) {
+ printf("SF: m25p trailing byte program failed\n");
+ goto time_out;
+ }
+ ret = wait_till_ready(flash);
+ if (ret) {
+ printf("SF: timeout for ready!\n");
+ goto time_out;
+ }
+ write_disable(flash);
+ }
+
+time_out:
+ spi_release_bus(flash->spi);
+ return ret;
+}
+
+/****************************************************************************/
+
+/*
+ * SPI device driver setup and teardown
+ */
+
+struct flash_info {
+ /* JEDEC id zero means "no ID" (most older chips); otherwise it has
+ * a high byte of zero plus three data bytes: the manufacturer id,
+ * then a two byte device id.
+ */
+ u32 jedec_id;
+ u16 ext_id;
+
+ /* The size listed here is what works with OPCODE_SE, which isn't
+ * necessarily called a "sector" by the vendor.
+ */
+ unsigned sector_size;
+ u16 n_sectors;
+
+ u16 page_size;
+ u16 addr_width;
+
+ u16 flags;
+#define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly
*/
+#define M25P_NO_ERASE 0x02 /* No erase command needed */
+};
+
+#define SPI_NAME_SIZE 32
+#define SPI_MODULE_PREFIX "spi:"
+
+struct spi_device_id {
+ s8 name[SPI_NAME_SIZE];
+ u32 driver_data;
+};
+
+#define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
+ ((u32)&(struct flash_info) { \
+ .jedec_id = (_jedec_id), \
+ .ext_id = (_ext_id), \
+ .sector_size = (_sector_size), \
+ .n_sectors = (_n_sectors), \
+ .page_size = 256, \
+ .flags = (_flags), \
+ })
+
+#define CAT25_INFO(_sector_size, _n_sectors, _page_size, _addr_width) \
+ ((u32)&(struct flash_info) { \
+ .sector_size = (_sector_size), \
+ .n_sectors = (_n_sectors), \
+ .page_size = (_page_size), \
+ .addr_width = (_addr_width), \
+ .flags = M25P_NO_ERASE, \
+ })
+
+/* NOTE: double check command sets and memory organization when you add
+ * more flash chips. This current list focusses on newer chips, which
+ * have been converging on command sets which including JEDEC ID.
+ */
+static const struct spi_device_id m25p_ids[] = {
+ /* Atmel -- some are (confusingly) marketed as "DataFlash" */
+ { "at25fs010", INFO(0x1f6601, 0, 32 * 1024, 4, SECT_4K) },
+ { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) },
+
+ { "at25df041a", INFO(0x1f4401, 0, 64 * 1024, 8, SECT_4K) },
+ { "at25df641", INFO(0x1f4800, 0, 64 * 1024, 128, SECT_4K) },
+
+ { "at26f004", INFO(0x1f0400, 0, 64 * 1024, 8, SECT_4K) },
+ { "at26df081a", INFO(0x1f4501, 0, 64 * 1024, 16, SECT_4K) },
+ { "at26df161a", INFO(0x1f4601, 0, 64 * 1024, 32, SECT_4K) },
+ { "at26df321", INFO(0x1f4700, 0, 64 * 1024, 64, SECT_4K) },
+
+ /* EON -- en25xxx */
+ { "en25f32", INFO(0x1c3116, 0, 64 * 1024, 64, SECT_4K) },
+ { "en25p32", INFO(0x1c2016, 0, 64 * 1024, 64, 0) },
+ { "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
+
+ /* Intel/Numonyx -- xxxs33b */
+ { "160s33b", INFO(0x898911, 0, 64 * 1024, 32, 0) },
+ { "320s33b", INFO(0x898912, 0, 64 * 1024, 64, 0) },
+ { "640s33b", INFO(0x898913, 0, 64 * 1024, 128, 0) },
+
+ /* Macronix */
+ { "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) },
+ { "mx25l8005", INFO(0xc22014, 0, 64 * 1024, 16, 0) },
+ { "mx25l1606e", INFO(0xc22015, 0, 64 * 1024, 32, SECT_4K) },
+ { "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 0) },
+ { "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 0) },
+ { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
+ { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
+ { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },
+ { "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
+
+ /* Spansion -- single (large) sector size only, at least
+ * for the chips listed here (without boot sectors).
+ */
+ { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8, 0) },
+ { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16, 0) },
+ { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32, 0) },
+ { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) },
+ { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SECT_4K) },
+ { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) },
+ { "s25fl256s0", INFO(0x010219, 0x4d00, 256 * 1024, 128, 0) },
+ { "s25fl256s1", INFO(0x010219, 0x4d01, 64 * 1024, 512, 0) },
+ { "s25fl512s", INFO(0x010220, 0x4d00, 256 * 1024, 256, 0) },
+ { "s70fl01gs", INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) },
+ { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) },
+ { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) },
+ { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) },
+ { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, 0) },
+ { "s25fl016k", INFO(0xef4015, 0, 64 * 1024, 32, SECT_4K) },
+ { "s25fl064k", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
+
+ /* SST -- large erase sizes are "overlays", "sectors" are 4K */
+ { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K) },
+ { "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K) },
+ { "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K) },
+ { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K) },
+ { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K) },
+ { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K) },
+ { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K) },
+ { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K) },
+
+ /* ST Microelectronics -- newer production may have feature updates */
+ { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) },
+ { "m25p10", INFO(0x202011, 0, 32 * 1024, 4, 0) },
+ { "m25p20", INFO(0x202012, 0, 64 * 1024, 4, 0) },
+ { "m25p40", INFO(0x202013, 0, 64 * 1024, 8, 0) },
+ { "m25p80", INFO(0x202014, 0, 64 * 1024, 16, 0) },
+ { "m25p16", INFO(0x202015, 0, 64 * 1024, 32, 0) },
+ { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) },
+ { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) },
+ { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) },
+
+ { "m25p05-nonjedec", INFO(0, 0, 32 * 1024, 2, 0) },
+ { "m25p10-nonjedec", INFO(0, 0, 32 * 1024, 4, 0) },
+ { "m25p20-nonjedec", INFO(0, 0, 64 * 1024, 4, 0) },
+ { "m25p40-nonjedec", INFO(0, 0, 64 * 1024, 8, 0) },
+ { "m25p80-nonjedec", INFO(0, 0, 64 * 1024, 16, 0) },
+ { "m25p16-nonjedec", INFO(0, 0, 64 * 1024, 32, 0) },
+ { "m25p32-nonjedec", INFO(0, 0, 64 * 1024, 64, 0) },
+ { "m25p64-nonjedec", INFO(0, 0, 64 * 1024, 128, 0) },
+ { "m25p128-nonjedec", INFO(0, 0, 256 * 1024, 64, 0) },
+
+ { "m45pe10", INFO(0x204011, 0, 64 * 1024, 2, 0) },
+ { "m45pe80", INFO(0x204014, 0, 64 * 1024, 16, 0) },
+ { "m45pe16", INFO(0x204015, 0, 64 * 1024, 32, 0) },
+
+ { "m25pe80", INFO(0x208014, 0, 64 * 1024, 16, 0) },
+ { "m25pe16", INFO(0x208015, 0, 64 * 1024, 32, SECT_4K) },
+
+ { "m25px32", INFO(0x207116, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) },
+
+ /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
+ { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
+ { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) },
+ { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
+ { "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) },
+ { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) },
+ { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) },
+ { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) },
+ { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
+ { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
+
+ /* Catalyst / On Semiconductor -- non-JEDEC */
+ { "cat25c11", CAT25_INFO(16, 8, 16, 1) },
+ { "cat25c03", CAT25_INFO(32, 8, 16, 2) },
+ { "cat25c09", CAT25_INFO(128, 8, 32, 2) },
+ { "cat25c17", CAT25_INFO(256, 8, 32, 2) },
+ { "cat25128", CAT25_INFO(2048, 8, 64, 2) },
+ { },
+};
+
+static const struct spi_device_id *jedec_probe(u8 *idcode)
+{
+ int tmp;
+ u32 jedec;
+ u16 ext_jedec;
+ struct flash_info *info;
+
+ jedec = idcode[0];
+ jedec = jedec << 8;
+ jedec |= idcode[1];
+ jedec = jedec << 8;
+ jedec |= idcode[2];
+
+ ext_jedec = idcode[3] << 8 | idcode[4];
+
+ for (tmp = 0; tmp < ARRAY_SIZE(m25p_ids) - 1; tmp++) {
+ info = (void *)m25p_ids[tmp].driver_data;
+ if (info->jedec_id == jedec) {
+ if (info->ext_id != 0 && info->ext_id != ext_jedec)
+ continue;
+ printf("JEDEC ID: 0x%x\n", jedec);
+
+ return &m25p_ids[tmp];
+ }
+ }
+ printf("unrecognized JEDEC id %06x\n", jedec);
+ return NULL;
+}
+
+
+/*
+ * board specific setup should have ensured the SPI clock used here
+ * matches what the READ command supports, at least until this driver
+ * understands FAST_READ (for clocks over 25 MHz).
+ */
+struct spi_flash *
+spi_flash_probe_m25p(struct spi_slave *spi, u8 *idcode)
+{
+ struct m25p_spi_flash *m25p;
+ struct flash_info *info;
+ const struct spi_device_id *jid;
+
+ jid = jedec_probe(idcode);
+ if (!jid)
+ return NULL;
+
+ info = (void *)jid->driver_data;
+
+ m25p = malloc(sizeof(*m25p));
+ if (!m25p)
+ return NULL;
+
+ /*
+ * Atmel, SST and Intel/Numonyx serial flash tend to power
+ * up with the software protection bits set
+ */
+
+ if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL ||
+ JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL ||
+ JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) {
+ if (write_enable(&m25p->flash) < 0) {
+ printf("SF: Write enable failed\n");
+ goto err_rtn;
+ }
+ if (write_sr(&m25p->flash, 0) < 0) {
+ printf("SF: Write sr failed\n");
+ goto err_rtn;
+ }
+ }
+
+ m25p->flash.spi = spi;
+ m25p->flash.name = (const char *)jid->name;
+ m25p->flash.erase = m25p80_erase;
+ m25p->flash.read = m25p80_read;
+ m25p->flash.size = info->sector_size * info->n_sectors;
+
+ /* sst flash chips use AAI word program */
+ if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
+ m25p->flash.write = sst_write;
+ else
+ m25p->flash.write = m25p80_write;
+
+ /* prefer "small sector" erase if possible */
+ if (info->flags & SECT_4K) {
+ m25p->erase_opcode = OPCODE_BE_4K;
+ m25p->erase_size = 4096;
+ } else {
+ m25p->erase_opcode = OPCODE_SE;
+ m25p->erase_size = info->sector_size;
+ }
+
+ m25p->page_size = info->page_size;
+
+ if (info->addr_width)
+ m25p->addr_width = info->addr_width;
+ else {
+ /* enable 4-byte addressing if the device exceeds 16MiB */
+ if (m25p->flash.size > 0x1000000) {
+ m25p->addr_width = 4;
+ set_4byte(&m25p->flash, info->jedec_id, 1);
+ } else
+ m25p->addr_width = 3;
+ }
+
+ printf("%s (%lld Kbytes)\n", jid->name,
+ (long long)m25p->flash.size >> 10);
+
+ return &m25p->flash;
+err_rtn:
+ free(m25p);
+ return NULL;
+}
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index ced4c94..a7db8d2 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -277,6 +277,16 @@ static const struct {
#ifdef CONFIG_SPI_FLASH_EON
{ 0, 0x1c, spi_flash_probe_eon, },
#endif
+#ifdef CONFIG_SPI_FLASH_M25P80
+ { 0, 0x01, spi_flash_probe_m25p, },
+ { 0, 0x1c, spi_flash_probe_m25p, },
+ { 0, 0x1f, spi_flash_probe_m25p, },
+ { 0, 0x20, spi_flash_probe_m25p, },
+ { 0, 0x89, spi_flash_probe_m25p, },
+ { 0, 0xbf, spi_flash_probe_m25p, },
+ { 0, 0xc2, spi_flash_probe_m25p, },
+ { 0, 0xef, spi_flash_probe_m25p, },
+#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX
{ 0, 0xc2, spi_flash_probe_macronix, },
#endif
diff --git a/drivers/mtd/spi/spi_flash_internal.h
b/drivers/mtd/spi/spi_flash_internal.h
index 91e036a..5d75025 100644
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -95,6 +95,7 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
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_eon(struct spi_slave *spi, u8 *idcode);
+struct spi_flash *spi_flash_probe_m25p(struct spi_slave *spi, u8 *idcode);
struct spi_flash *spi_flash_probe_macronix(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);
--
1.7.0.4
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