0f53308f8f
Signed-off-by: Felix Fietkau <nbd@nbd.name> SVN-Revision: 49379
635 lines
17 KiB
Diff
635 lines
17 KiB
Diff
--- a/drivers/mtd/devices/Kconfig
|
|
+++ b/drivers/mtd/devices/Kconfig
|
|
@@ -120,6 +120,10 @@ config MTD_BCM47XXSFLASH
|
|
registered by bcma as platform devices. This enables driver for
|
|
serial flash memories (only read-only mode is implemented).
|
|
|
|
+config MTD_AR2315
|
|
+ tristate "Atheros AR2315+ SPI Flash support"
|
|
+ depends on SOC_AR2315
|
|
+
|
|
config MTD_SLRAM
|
|
tristate "Uncached system RAM"
|
|
help
|
|
--- a/drivers/mtd/devices/Makefile
|
|
+++ b/drivers/mtd/devices/Makefile
|
|
@@ -14,6 +14,7 @@ obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataf
|
|
obj-$(CONFIG_MTD_M25P80) += m25p80.o
|
|
obj-$(CONFIG_MTD_SPEAR_SMI) += spear_smi.o
|
|
obj-$(CONFIG_MTD_SST25L) += sst25l.o
|
|
+obj-$(CONFIG_MTD_AR2315) += ar2315.o
|
|
obj-$(CONFIG_MTD_BCM47XXSFLASH) += bcm47xxsflash.o
|
|
obj-$(CONFIG_MTD_ST_SPI_FSM) += st_spi_fsm.o
|
|
|
|
--- /dev/null
|
|
+++ b/drivers/mtd/devices/ar2315.c
|
|
@@ -0,0 +1,459 @@
|
|
+
|
|
+/*
|
|
+ * MTD driver for the SPI Flash Memory support on Atheros AR2315
|
|
+ *
|
|
+ * Copyright (c) 2005-2006 Atheros Communications Inc.
|
|
+ * Copyright (C) 2006-2007 FON Technology, SL.
|
|
+ * Copyright (C) 2006-2007 Imre Kaloz <kaloz@openwrt.org>
|
|
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@nbd.name>
|
|
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
|
|
+ *
|
|
+ * 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 <linux/kernel.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/types.h>
|
|
+#include <linux/errno.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/mtd/mtd.h>
|
|
+#include <linux/mtd/partitions.h>
|
|
+#include <linux/platform_device.h>
|
|
+#include <linux/sched.h>
|
|
+#include <linux/delay.h>
|
|
+#include <linux/io.h>
|
|
+#include <linux/mutex.h>
|
|
+
|
|
+#include "ar2315_spiflash.h"
|
|
+
|
|
+#define DRIVER_NAME "ar2315-spiflash"
|
|
+
|
|
+#define busy_wait(_priv, _condition, _wait) do { \
|
|
+ while (_condition) { \
|
|
+ if (_wait > 1) \
|
|
+ msleep(_wait); \
|
|
+ else if ((_wait == 1) && need_resched()) \
|
|
+ schedule(); \
|
|
+ else \
|
|
+ udelay(1); \
|
|
+ } \
|
|
+} while (0)
|
|
+
|
|
+enum {
|
|
+ FLASH_NONE,
|
|
+ FLASH_1MB,
|
|
+ FLASH_2MB,
|
|
+ FLASH_4MB,
|
|
+ FLASH_8MB,
|
|
+ FLASH_16MB,
|
|
+};
|
|
+
|
|
+/* Flash configuration table */
|
|
+struct flashconfig {
|
|
+ u32 byte_cnt;
|
|
+ u32 sector_cnt;
|
|
+ u32 sector_size;
|
|
+};
|
|
+
|
|
+static const struct flashconfig flashconfig_tbl[] = {
|
|
+ [FLASH_NONE] = { 0, 0, 0},
|
|
+ [FLASH_1MB] = { STM_1MB_BYTE_COUNT, STM_1MB_SECTOR_COUNT,
|
|
+ STM_1MB_SECTOR_SIZE},
|
|
+ [FLASH_2MB] = { STM_2MB_BYTE_COUNT, STM_2MB_SECTOR_COUNT,
|
|
+ STM_2MB_SECTOR_SIZE},
|
|
+ [FLASH_4MB] = { STM_4MB_BYTE_COUNT, STM_4MB_SECTOR_COUNT,
|
|
+ STM_4MB_SECTOR_SIZE},
|
|
+ [FLASH_8MB] = { STM_8MB_BYTE_COUNT, STM_8MB_SECTOR_COUNT,
|
|
+ STM_8MB_SECTOR_SIZE},
|
|
+ [FLASH_16MB] = { STM_16MB_BYTE_COUNT, STM_16MB_SECTOR_COUNT,
|
|
+ STM_16MB_SECTOR_SIZE}
|
|
+};
|
|
+
|
|
+/* Mapping of generic opcodes to STM serial flash opcodes */
|
|
+enum {
|
|
+ SPI_WRITE_ENABLE,
|
|
+ SPI_WRITE_DISABLE,
|
|
+ SPI_RD_STATUS,
|
|
+ SPI_WR_STATUS,
|
|
+ SPI_RD_DATA,
|
|
+ SPI_FAST_RD_DATA,
|
|
+ SPI_PAGE_PROGRAM,
|
|
+ SPI_SECTOR_ERASE,
|
|
+ SPI_BULK_ERASE,
|
|
+ SPI_DEEP_PWRDOWN,
|
|
+ SPI_RD_SIG,
|
|
+};
|
|
+
|
|
+struct opcodes {
|
|
+ __u16 code;
|
|
+ __s8 tx_cnt;
|
|
+ __s8 rx_cnt;
|
|
+};
|
|
+
|
|
+static const struct opcodes stm_opcodes[] = {
|
|
+ [SPI_WRITE_ENABLE] = {STM_OP_WR_ENABLE, 1, 0},
|
|
+ [SPI_WRITE_DISABLE] = {STM_OP_WR_DISABLE, 1, 0},
|
|
+ [SPI_RD_STATUS] = {STM_OP_RD_STATUS, 1, 1},
|
|
+ [SPI_WR_STATUS] = {STM_OP_WR_STATUS, 1, 0},
|
|
+ [SPI_RD_DATA] = {STM_OP_RD_DATA, 4, 4},
|
|
+ [SPI_FAST_RD_DATA] = {STM_OP_FAST_RD_DATA, 5, 0},
|
|
+ [SPI_PAGE_PROGRAM] = {STM_OP_PAGE_PGRM, 8, 0},
|
|
+ [SPI_SECTOR_ERASE] = {STM_OP_SECTOR_ERASE, 4, 0},
|
|
+ [SPI_BULK_ERASE] = {STM_OP_BULK_ERASE, 1, 0},
|
|
+ [SPI_DEEP_PWRDOWN] = {STM_OP_DEEP_PWRDOWN, 1, 0},
|
|
+ [SPI_RD_SIG] = {STM_OP_RD_SIG, 4, 1},
|
|
+};
|
|
+
|
|
+/* Driver private data structure */
|
|
+struct spiflash_priv {
|
|
+ struct mtd_info mtd;
|
|
+ void __iomem *readaddr; /* memory mapped data for read */
|
|
+ void __iomem *mmraddr; /* memory mapped register space */
|
|
+ struct mutex lock; /* serialize registers access */
|
|
+};
|
|
+
|
|
+#define to_spiflash(_mtd) container_of(_mtd, struct spiflash_priv, mtd)
|
|
+
|
|
+enum {
|
|
+ FL_READY,
|
|
+ FL_READING,
|
|
+ FL_ERASING,
|
|
+ FL_WRITING
|
|
+};
|
|
+
|
|
+/*****************************************************************************/
|
|
+
|
|
+static u32
|
|
+spiflash_read_reg(struct spiflash_priv *priv, int reg)
|
|
+{
|
|
+ return ioread32(priv->mmraddr + reg);
|
|
+}
|
|
+
|
|
+static void
|
|
+spiflash_write_reg(struct spiflash_priv *priv, int reg, u32 data)
|
|
+{
|
|
+ iowrite32(data, priv->mmraddr + reg);
|
|
+}
|
|
+
|
|
+static u32
|
|
+spiflash_wait_busy(struct spiflash_priv *priv)
|
|
+{
|
|
+ u32 reg;
|
|
+
|
|
+ busy_wait(priv, (reg = spiflash_read_reg(priv, SPI_FLASH_CTL)) &
|
|
+ SPI_CTL_BUSY, 0);
|
|
+ return reg;
|
|
+}
|
|
+
|
|
+static u32
|
|
+spiflash_sendcmd(struct spiflash_priv *priv, int opcode, u32 addr)
|
|
+{
|
|
+ const struct opcodes *op;
|
|
+ u32 reg, mask;
|
|
+
|
|
+ op = &stm_opcodes[opcode];
|
|
+ reg = spiflash_wait_busy(priv);
|
|
+ spiflash_write_reg(priv, SPI_FLASH_OPCODE,
|
|
+ ((u32)op->code) | (addr << 8));
|
|
+
|
|
+ reg &= ~SPI_CTL_TX_RX_CNT_MASK;
|
|
+ reg |= SPI_CTL_START | op->tx_cnt | (op->rx_cnt << 4);
|
|
+
|
|
+ spiflash_write_reg(priv, SPI_FLASH_CTL, reg);
|
|
+ spiflash_wait_busy(priv);
|
|
+
|
|
+ if (!op->rx_cnt)
|
|
+ return 0;
|
|
+
|
|
+ reg = spiflash_read_reg(priv, SPI_FLASH_DATA);
|
|
+
|
|
+ switch (op->rx_cnt) {
|
|
+ case 1:
|
|
+ mask = 0x000000ff;
|
|
+ break;
|
|
+ case 2:
|
|
+ mask = 0x0000ffff;
|
|
+ break;
|
|
+ case 3:
|
|
+ mask = 0x00ffffff;
|
|
+ break;
|
|
+ default:
|
|
+ mask = 0xffffffff;
|
|
+ break;
|
|
+ }
|
|
+ reg &= mask;
|
|
+
|
|
+ return reg;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Probe SPI flash device
|
|
+ * Function returns 0 for failure.
|
|
+ * and flashconfig_tbl array index for success.
|
|
+ */
|
|
+static int
|
|
+spiflash_probe_chip(struct platform_device *pdev, struct spiflash_priv *priv)
|
|
+{
|
|
+ u32 sig = spiflash_sendcmd(priv, SPI_RD_SIG, 0);
|
|
+ int flash_size;
|
|
+
|
|
+ switch (sig) {
|
|
+ case STM_8MBIT_SIGNATURE:
|
|
+ flash_size = FLASH_1MB;
|
|
+ break;
|
|
+ case STM_16MBIT_SIGNATURE:
|
|
+ flash_size = FLASH_2MB;
|
|
+ break;
|
|
+ case STM_32MBIT_SIGNATURE:
|
|
+ flash_size = FLASH_4MB;
|
|
+ break;
|
|
+ case STM_64MBIT_SIGNATURE:
|
|
+ flash_size = FLASH_8MB;
|
|
+ break;
|
|
+ case STM_128MBIT_SIGNATURE:
|
|
+ flash_size = FLASH_16MB;
|
|
+ break;
|
|
+ default:
|
|
+ dev_warn(&pdev->dev, "read of flash device signature failed!\n");
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ return flash_size;
|
|
+}
|
|
+
|
|
+static void
|
|
+spiflash_wait_complete(struct spiflash_priv *priv, unsigned int timeout)
|
|
+{
|
|
+ busy_wait(priv, spiflash_sendcmd(priv, SPI_RD_STATUS, 0) &
|
|
+ SPI_STATUS_WIP, timeout);
|
|
+}
|
|
+
|
|
+static int
|
|
+spiflash_erase(struct mtd_info *mtd, struct erase_info *instr)
|
|
+{
|
|
+ struct spiflash_priv *priv = to_spiflash(mtd);
|
|
+ const struct opcodes *op;
|
|
+ u32 temp, reg;
|
|
+
|
|
+ if (instr->addr + instr->len > mtd->size)
|
|
+ return -EINVAL;
|
|
+
|
|
+ mutex_lock(&priv->lock);
|
|
+
|
|
+ spiflash_sendcmd(priv, SPI_WRITE_ENABLE, 0);
|
|
+ reg = spiflash_wait_busy(priv);
|
|
+
|
|
+ op = &stm_opcodes[SPI_SECTOR_ERASE];
|
|
+ temp = ((u32)instr->addr << 8) | (u32)(op->code);
|
|
+ spiflash_write_reg(priv, SPI_FLASH_OPCODE, temp);
|
|
+
|
|
+ reg &= ~SPI_CTL_TX_RX_CNT_MASK;
|
|
+ reg |= op->tx_cnt | SPI_CTL_START;
|
|
+ spiflash_write_reg(priv, SPI_FLASH_CTL, reg);
|
|
+
|
|
+ spiflash_wait_complete(priv, 20);
|
|
+
|
|
+ mutex_unlock(&priv->lock);
|
|
+
|
|
+ instr->state = MTD_ERASE_DONE;
|
|
+ mtd_erase_callback(instr);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+spiflash_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
|
|
+ u_char *buf)
|
|
+{
|
|
+ struct spiflash_priv *priv = to_spiflash(mtd);
|
|
+
|
|
+ if (!len)
|
|
+ return 0;
|
|
+
|
|
+ if (from + len > mtd->size)
|
|
+ return -EINVAL;
|
|
+
|
|
+ *retlen = len;
|
|
+
|
|
+ mutex_lock(&priv->lock);
|
|
+
|
|
+ memcpy_fromio(buf, priv->readaddr + from, len);
|
|
+
|
|
+ mutex_unlock(&priv->lock);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int
|
|
+spiflash_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
|
|
+ const u8 *buf)
|
|
+{
|
|
+ struct spiflash_priv *priv = to_spiflash(mtd);
|
|
+ u32 opcode, bytes_left;
|
|
+
|
|
+ *retlen = 0;
|
|
+
|
|
+ if (!len)
|
|
+ return 0;
|
|
+
|
|
+ if (to + len > mtd->size)
|
|
+ return -EINVAL;
|
|
+
|
|
+ bytes_left = len;
|
|
+
|
|
+ do {
|
|
+ u32 read_len, reg, page_offset, spi_data = 0;
|
|
+
|
|
+ read_len = min(bytes_left, sizeof(u32));
|
|
+
|
|
+ /* 32-bit writes cannot span across a page boundary
|
|
+ * (256 bytes). This types of writes require two page
|
|
+ * program operations to handle it correctly. The STM part
|
|
+ * will write the overflow data to the beginning of the
|
|
+ * current page as opposed to the subsequent page.
|
|
+ */
|
|
+ page_offset = (to & (STM_PAGE_SIZE - 1)) + read_len;
|
|
+
|
|
+ if (page_offset > STM_PAGE_SIZE)
|
|
+ read_len -= (page_offset - STM_PAGE_SIZE);
|
|
+
|
|
+ mutex_lock(&priv->lock);
|
|
+
|
|
+ spiflash_sendcmd(priv, SPI_WRITE_ENABLE, 0);
|
|
+ spi_data = 0;
|
|
+ switch (read_len) {
|
|
+ case 4:
|
|
+ spi_data |= buf[3] << 24;
|
|
+ /* fall through */
|
|
+ case 3:
|
|
+ spi_data |= buf[2] << 16;
|
|
+ /* fall through */
|
|
+ case 2:
|
|
+ spi_data |= buf[1] << 8;
|
|
+ /* fall through */
|
|
+ case 1:
|
|
+ spi_data |= buf[0] & 0xff;
|
|
+ break;
|
|
+ default:
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ spiflash_write_reg(priv, SPI_FLASH_DATA, spi_data);
|
|
+ opcode = stm_opcodes[SPI_PAGE_PROGRAM].code |
|
|
+ (to & 0x00ffffff) << 8;
|
|
+ spiflash_write_reg(priv, SPI_FLASH_OPCODE, opcode);
|
|
+
|
|
+ reg = spiflash_read_reg(priv, SPI_FLASH_CTL);
|
|
+ reg &= ~SPI_CTL_TX_RX_CNT_MASK;
|
|
+ reg |= (read_len + 4) | SPI_CTL_START;
|
|
+ spiflash_write_reg(priv, SPI_FLASH_CTL, reg);
|
|
+
|
|
+ spiflash_wait_complete(priv, 1);
|
|
+
|
|
+ mutex_unlock(&priv->lock);
|
|
+
|
|
+ bytes_left -= read_len;
|
|
+ to += read_len;
|
|
+ buf += read_len;
|
|
+
|
|
+ *retlen += read_len;
|
|
+ } while (bytes_left != 0);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#if defined CONFIG_MTD_REDBOOT_PARTS || CONFIG_MTD_MYLOADER_PARTS
|
|
+static const char * const part_probe_types[] = {
|
|
+ "cmdlinepart", "RedBoot", "MyLoader", NULL
|
|
+};
|
|
+#endif
|
|
+
|
|
+static int
|
|
+spiflash_probe(struct platform_device *pdev)
|
|
+{
|
|
+ struct spiflash_priv *priv;
|
|
+ struct mtd_info *mtd;
|
|
+ struct resource *res;
|
|
+ int index;
|
|
+ int result = 0;
|
|
+
|
|
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
+ if (!priv)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ mutex_init(&priv->lock);
|
|
+ mtd = &priv->mtd;
|
|
+
|
|
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
+ priv->mmraddr = devm_ioremap_resource(&pdev->dev, res);
|
|
+ if (IS_ERR(priv->mmraddr)) {
|
|
+ dev_warn(&pdev->dev, "failed to map flash MMR\n");
|
|
+ return PTR_ERR(priv->mmraddr);
|
|
+ }
|
|
+
|
|
+ index = spiflash_probe_chip(pdev, priv);
|
|
+ if (!index) {
|
|
+ dev_warn(&pdev->dev, "found no flash device\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+
|
|
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
+ priv->readaddr = devm_ioremap_resource(&pdev->dev, res);
|
|
+ if (IS_ERR(priv->readaddr)) {
|
|
+ dev_warn(&pdev->dev, "failed to map flash read mem\n");
|
|
+ return PTR_ERR(priv->readaddr);
|
|
+ }
|
|
+
|
|
+ platform_set_drvdata(pdev, priv);
|
|
+ mtd->name = "spiflash";
|
|
+ mtd->type = MTD_NORFLASH;
|
|
+ mtd->flags = (MTD_CAP_NORFLASH|MTD_WRITEABLE);
|
|
+ mtd->size = flashconfig_tbl[index].byte_cnt;
|
|
+ mtd->erasesize = flashconfig_tbl[index].sector_size;
|
|
+ mtd->writesize = 1;
|
|
+ mtd->numeraseregions = 0;
|
|
+ mtd->eraseregions = NULL;
|
|
+ mtd->_erase = spiflash_erase;
|
|
+ mtd->_read = spiflash_read;
|
|
+ mtd->_write = spiflash_write;
|
|
+ mtd->owner = THIS_MODULE;
|
|
+
|
|
+ dev_info(&pdev->dev, "%lld Kbytes flash detected\n", mtd->size >> 10);
|
|
+
|
|
+#if defined CONFIG_MTD_REDBOOT_PARTS || CONFIG_MTD_MYLOADER_PARTS
|
|
+ /* parse redboot partitions */
|
|
+
|
|
+ result = mtd_device_parse_register(mtd, part_probe_types,
|
|
+ NULL, NULL, 0);
|
|
+#endif
|
|
+
|
|
+ return result;
|
|
+}
|
|
+
|
|
+static int
|
|
+spiflash_remove(struct platform_device *pdev)
|
|
+{
|
|
+ struct spiflash_priv *priv = platform_get_drvdata(pdev);
|
|
+
|
|
+ mtd_device_unregister(&priv->mtd);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct platform_driver spiflash_driver = {
|
|
+ .driver.name = DRIVER_NAME,
|
|
+ .probe = spiflash_probe,
|
|
+ .remove = spiflash_remove,
|
|
+};
|
|
+
|
|
+module_platform_driver(spiflash_driver);
|
|
+
|
|
+MODULE_LICENSE("GPL");
|
|
+MODULE_AUTHOR("OpenWrt.org");
|
|
+MODULE_AUTHOR("Atheros Communications Inc");
|
|
+MODULE_DESCRIPTION("MTD driver for SPI Flash on Atheros AR2315+ SOC");
|
|
+MODULE_ALIAS("platform:" DRIVER_NAME);
|
|
+
|
|
--- /dev/null
|
|
+++ b/drivers/mtd/devices/ar2315_spiflash.h
|
|
@@ -0,0 +1,106 @@
|
|
+/*
|
|
+ * Atheros AR2315 SPI Flash Memory support header file.
|
|
+ *
|
|
+ * Copyright (c) 2005, Atheros Communications Inc.
|
|
+ * Copyright (C) 2006 FON Technology, SL.
|
|
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
|
|
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@nbd.name>
|
|
+ *
|
|
+ * 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.
|
|
+ *
|
|
+ */
|
|
+#ifndef __AR2315_SPIFLASH_H
|
|
+#define __AR2315_SPIFLASH_H
|
|
+
|
|
+#define STM_PAGE_SIZE 256
|
|
+
|
|
+#define SFI_WRITE_BUFFER_SIZE 4
|
|
+#define SFI_FLASH_ADDR_MASK 0x00ffffff
|
|
+
|
|
+#define STM_8MBIT_SIGNATURE 0x13
|
|
+#define STM_M25P80_BYTE_COUNT 1048576
|
|
+#define STM_M25P80_SECTOR_COUNT 16
|
|
+#define STM_M25P80_SECTOR_SIZE 0x10000
|
|
+
|
|
+#define STM_16MBIT_SIGNATURE 0x14
|
|
+#define STM_M25P16_BYTE_COUNT 2097152
|
|
+#define STM_M25P16_SECTOR_COUNT 32
|
|
+#define STM_M25P16_SECTOR_SIZE 0x10000
|
|
+
|
|
+#define STM_32MBIT_SIGNATURE 0x15
|
|
+#define STM_M25P32_BYTE_COUNT 4194304
|
|
+#define STM_M25P32_SECTOR_COUNT 64
|
|
+#define STM_M25P32_SECTOR_SIZE 0x10000
|
|
+
|
|
+#define STM_64MBIT_SIGNATURE 0x16
|
|
+#define STM_M25P64_BYTE_COUNT 8388608
|
|
+#define STM_M25P64_SECTOR_COUNT 128
|
|
+#define STM_M25P64_SECTOR_SIZE 0x10000
|
|
+
|
|
+#define STM_128MBIT_SIGNATURE 0x17
|
|
+#define STM_M25P128_BYTE_COUNT 16777216
|
|
+#define STM_M25P128_SECTOR_COUNT 256
|
|
+#define STM_M25P128_SECTOR_SIZE 0x10000
|
|
+
|
|
+#define STM_1MB_BYTE_COUNT STM_M25P80_BYTE_COUNT
|
|
+#define STM_1MB_SECTOR_COUNT STM_M25P80_SECTOR_COUNT
|
|
+#define STM_1MB_SECTOR_SIZE STM_M25P80_SECTOR_SIZE
|
|
+#define STM_2MB_BYTE_COUNT STM_M25P16_BYTE_COUNT
|
|
+#define STM_2MB_SECTOR_COUNT STM_M25P16_SECTOR_COUNT
|
|
+#define STM_2MB_SECTOR_SIZE STM_M25P16_SECTOR_SIZE
|
|
+#define STM_4MB_BYTE_COUNT STM_M25P32_BYTE_COUNT
|
|
+#define STM_4MB_SECTOR_COUNT STM_M25P32_SECTOR_COUNT
|
|
+#define STM_4MB_SECTOR_SIZE STM_M25P32_SECTOR_SIZE
|
|
+#define STM_8MB_BYTE_COUNT STM_M25P64_BYTE_COUNT
|
|
+#define STM_8MB_SECTOR_COUNT STM_M25P64_SECTOR_COUNT
|
|
+#define STM_8MB_SECTOR_SIZE STM_M25P64_SECTOR_SIZE
|
|
+#define STM_16MB_BYTE_COUNT STM_M25P128_BYTE_COUNT
|
|
+#define STM_16MB_SECTOR_COUNT STM_M25P128_SECTOR_COUNT
|
|
+#define STM_16MB_SECTOR_SIZE STM_M25P128_SECTOR_SIZE
|
|
+
|
|
+/*
|
|
+ * ST Microelectronics Opcodes for Serial Flash
|
|
+ */
|
|
+
|
|
+#define STM_OP_WR_ENABLE 0x06 /* Write Enable */
|
|
+#define STM_OP_WR_DISABLE 0x04 /* Write Disable */
|
|
+#define STM_OP_RD_STATUS 0x05 /* Read Status */
|
|
+#define STM_OP_WR_STATUS 0x01 /* Write Status */
|
|
+#define STM_OP_RD_DATA 0x03 /* Read Data */
|
|
+#define STM_OP_FAST_RD_DATA 0x0b /* Fast Read Data */
|
|
+#define STM_OP_PAGE_PGRM 0x02 /* Page Program */
|
|
+#define STM_OP_SECTOR_ERASE 0xd8 /* Sector Erase */
|
|
+#define STM_OP_BULK_ERASE 0xc7 /* Bulk Erase */
|
|
+#define STM_OP_DEEP_PWRDOWN 0xb9 /* Deep Power-Down Mode */
|
|
+#define STM_OP_RD_SIG 0xab /* Read Electronic Signature */
|
|
+
|
|
+#define STM_STATUS_WIP 0x01 /* Write-In-Progress */
|
|
+#define STM_STATUS_WEL 0x02 /* Write Enable Latch */
|
|
+#define STM_STATUS_BP0 0x04 /* Block Protect 0 */
|
|
+#define STM_STATUS_BP1 0x08 /* Block Protect 1 */
|
|
+#define STM_STATUS_BP2 0x10 /* Block Protect 2 */
|
|
+#define STM_STATUS_SRWD 0x80 /* Status Register Write Disable */
|
|
+
|
|
+/*
|
|
+ * SPI Flash Interface Registers
|
|
+ */
|
|
+
|
|
+#define SPI_FLASH_CTL 0x00
|
|
+#define SPI_FLASH_OPCODE 0x04
|
|
+#define SPI_FLASH_DATA 0x08
|
|
+
|
|
+#define SPI_CTL_START 0x00000100
|
|
+#define SPI_CTL_BUSY 0x00010000
|
|
+#define SPI_CTL_TXCNT_MASK 0x0000000f
|
|
+#define SPI_CTL_RXCNT_MASK 0x000000f0
|
|
+#define SPI_CTL_TX_RX_CNT_MASK 0x000000ff
|
|
+#define SPI_CTL_SIZE_MASK 0x00060000
|
|
+
|
|
+#define SPI_CTL_CLK_SEL_MASK 0x03000000
|
|
+#define SPI_OPCODE_MASK 0x000000ff
|
|
+
|
|
+#define SPI_STATUS_WIP STM_STATUS_WIP
|
|
+
|
|
+#endif
|
|
--- a/arch/mips/ath25/ar2315.c
|
|
+++ b/arch/mips/ath25/ar2315.c
|
|
@@ -220,6 +220,28 @@ static struct platform_device ar2315_gpi
|
|
.num_resources = ARRAY_SIZE(ar2315_gpio_res)
|
|
};
|
|
|
|
+static struct resource ar2315_spiflash_res[] = {
|
|
+ {
|
|
+ .name = "spiflash_read",
|
|
+ .flags = IORESOURCE_MEM,
|
|
+ .start = AR2315_SPI_READ_BASE,
|
|
+ .end = AR2315_SPI_READ_BASE + AR2315_SPI_READ_SIZE - 1,
|
|
+ },
|
|
+ {
|
|
+ .name = "spiflash_mmr",
|
|
+ .flags = IORESOURCE_MEM,
|
|
+ .start = AR2315_SPI_MMR_BASE,
|
|
+ .end = AR2315_SPI_MMR_BASE + AR2315_SPI_MMR_SIZE - 1,
|
|
+ },
|
|
+};
|
|
+
|
|
+static struct platform_device ar2315_spiflash = {
|
|
+ .id = 0,
|
|
+ .name = "ar2315-spiflash",
|
|
+ .resource = ar2315_spiflash_res,
|
|
+ .num_resources = ARRAY_SIZE(ar2315_spiflash_res)
|
|
+};
|
|
+
|
|
void __init ar2315_init_devices(void)
|
|
{
|
|
/* Find board configuration */
|
|
@@ -230,6 +252,8 @@ void __init ar2315_init_devices(void)
|
|
ar2315_gpio_res[1].end = ar2315_gpio_res[1].start;
|
|
platform_device_register(&ar2315_gpio);
|
|
|
|
+ platform_device_register(&ar2315_spiflash);
|
|
+
|
|
ar2315_eth_data.macaddr = ath25_board.config->enet0_mac;
|
|
ath25_add_ethernet(0, AR2315_ENET0_BASE, "eth0_mii",
|
|
AR2315_ENET0_MII_BASE, AR2315_IRQ_ENET0,
|