openwrt/target/linux/brcm47xx/patches-3.6/053-mtd-add-nand-flash-driver.patch

--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -607,4 +607,12 @@ config MTD_NAND_FSMC
 	  Enables support for NAND Flash chips on the ST Microelectronics
 	  Flexible Static Memory Controller (FSMC)
 
+config MTD_NAND_BCM47XX
+	tristate "bcm47xx nand flash support"
+	default y
+	depends on BCM47XX && BCMA_NFLASH
+	select MTD_PARTITIONS
+	help
+	  Support for bcm47xx nand flash
+
 endif # MTD_NAND
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -51,5 +51,6 @@ obj-$(CONFIG_MTD_NAND_MPC5121_NFC)	+= mp
 obj-$(CONFIG_MTD_NAND_RICOH)		+= r852.o
 obj-$(CONFIG_MTD_NAND_JZ4740)		+= jz4740_nand.o
 obj-$(CONFIG_MTD_NAND_GPMI_NAND)	+= gpmi-nand/
+obj-$(CONFIG_MTD_NAND_BCM47XX)		+= bcm47xx_nand.o
 
 nand-objs := nand_base.o nand_bbt.o
--- /dev/null
+++ b/drivers/mtd/nand/bcm47xx_nand.c
@@ -0,0 +1,528 @@
+/*
+ * BCMA nand flash interface
+ *
+ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+ * Copyright 2010, Broadcom Corporation
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ *
+ */
+
+#define pr_fmt(fmt) "bcm47xx_nflash: " fmt
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <bcm47xx.h>
+#include <linux/cramfs_fs.h>
+#include <linux/romfs_fs.h>
+#include <linux/magic.h>
+#include <linux/byteorder/generic.h>
+#include <linux/mtd/bcm47xx_nand.h>
+#include <linux/mtd/nand.h>
+
+static int bcm47xx_nflash_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip);
+static int bcm47xx_nflash_erase(struct mtd_info *mtd, unsigned int addr, unsigned int len);
+
+/* Private Global variable */
+static u32 read_offset = 0;
+static u32 write_offset;
+
+static int
+nflash_mtd_poll(struct bcm47xx_nflash *nflash, unsigned int offset, int timeout)
+{
+	unsigned long now = jiffies;
+	int ret = 0;
+
+	for (;;) {
+		if (!bcma_nflash_poll(nflash->bcc)) {
+			ret = 0;
+			break;
+		}
+		if (time_after(jiffies, now + timeout)) {
+			pr_err("timeout while polling\n");
+			ret = -ETIMEDOUT;
+			break;
+		}
+		udelay(1);
+	}
+
+	return ret;
+}
+
+static int
+bcm47xx_nflash_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
+{
+	struct nand_chip *nchip = (struct nand_chip *)mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+	int bytes, ret = 0;
+	u32 extra = 0;
+	u8 *tmpbuf = NULL;
+	int size;
+	u32 offset, blocksize, mask, off;
+	u32 skip_bytes = 0;
+	int need_copy = 0;
+	u8 *ptr = NULL;
+
+	/* Check address range */
+	if (!len)
+		return 0;
+	if ((from + len) > mtd->size)
+		return -EINVAL;
+	offset = from;
+	if ((offset & (NFL_SECTOR_SIZE - 1)) != 0) {
+		extra = offset & (NFL_SECTOR_SIZE - 1);
+		offset -= extra;
+		len += extra;
+		need_copy = 1;
+	}
+	size = (len + (NFL_SECTOR_SIZE - 1)) & ~(NFL_SECTOR_SIZE - 1);
+	if (size != len) {
+		need_copy = 1;
+	}
+	if (!need_copy) {
+		ptr = buf;
+	} else {
+		tmpbuf = (u8 *)kmalloc(size, GFP_KERNEL);
+		ptr = tmpbuf;
+	}
+
+	blocksize = mtd->erasesize;
+	mask = blocksize - 1;
+	*retlen = 0;
+	while (len > 0) {
+		off = offset + skip_bytes;
+		if ((bytes = bcma_nflash_read(nflash->bcc, off, NFL_SECTOR_SIZE, ptr)) < 0) {
+			ret = bytes;
+			goto done;
+		}
+		if (bytes > len)
+			bytes = len;
+		offset += bytes;
+		len -= bytes;
+		ptr += bytes;
+		*retlen += bytes;
+	}
+
+done:
+	if (tmpbuf) {
+		*retlen -= extra;
+		memcpy(buf, tmpbuf+extra, *retlen);
+		kfree(tmpbuf);
+	}
+
+	return ret;
+}
+
+static void bcm47xx_nflash_write(struct mtd_info *mtd, u32 to, const u_char *buf, u32 len)
+{
+	struct nand_chip *nchip = (struct nand_chip *)mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+	u32 offset, blocksize, mask, off;
+	int read_len;
+	u32 copy_len, write_len, from;
+	u_char *write_ptr, *block;
+	const u_char *ptr;
+	int ret, bytes;
+
+	/* Check address range */
+	if (!len) {
+		pr_err("Error: Attempted to write too small data\n");
+		return;
+	}
+
+	if (!to)
+		return;
+
+	if ((to + len) > mtd->size) {
+		pr_err("Error: Attempted to write too large data\n");
+		return;
+	}
+
+	ptr = buf;
+	block = NULL;
+	offset = to;
+	blocksize = mtd->erasesize;
+	if (!(block = kmalloc(blocksize, GFP_KERNEL)))
+		return;
+	mask = blocksize - 1;
+	while (len) {
+		/* Align offset */
+		from = offset & ~mask;
+		/* Copy existing data into holding block if necessary */
+		if (((offset & (blocksize-1)) != 0) || (len < blocksize)) {
+			if ((ret = bcm47xx_nflash_read(mtd, from, blocksize, &read_len, block)))
+				goto done;
+			if (read_len != blocksize) {
+				ret = -EINVAL;
+				goto done;
+			}
+		}
+
+		/* Copy input data into holding block */
+		copy_len = min(len, blocksize - (offset & mask));
+		memcpy(block + (offset & mask), ptr, copy_len);
+		off = (uint) from;
+		/* Erase block */
+		if ((ret = bcm47xx_nflash_erase(mtd, off, blocksize)) < 0)
+			goto done;
+		/* Write holding block */
+		write_ptr = block;
+		write_len = blocksize;
+		if ((bytes = bcma_nflash_write(nflash->bcc, (uint)from, (uint)write_len, (u8 *) write_ptr)) != 0) {
+			ret = bytes;
+			goto done;
+		}
+		offset += copy_len;
+		if (len < copy_len)
+			len = 0;
+		else
+			len -= copy_len;
+		ptr += copy_len;
+	}
+
+done:
+	if (block)
+		kfree(block);
+	return;
+}
+
+static int bcm47xx_nflash_erase(struct mtd_info *mtd, unsigned int addr, unsigned int len)
+{
+	struct nand_chip *nchip = (struct nand_chip *)mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+
+	/* Check address range */
+	if (!len)
+		return 1;
+	if ((addr + len) > mtd->size)
+		return 1;
+
+	if (bcma_nflash_erase(nflash->bcc, addr)) {
+		pr_err("ERASE: nflash erase error\n");
+		return 1;
+	}
+
+	if (nflash_mtd_poll(nflash, addr, 10 * HZ)) {
+		pr_err("ERASE: nflash_mtd_poll error\n");
+		return 1;
+	}
+
+	return 0;
+}
+
+/* This functions is used by upper layer to checks if device is ready */
+static int bcm47xx_nflash_dev_ready(struct mtd_info *mtd)
+{
+	return 1;
+}
+
+/* Issue a nand flash command */
+static inline void bcm47xx_nflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
+{
+	bcma_cc_write32(cc, NAND_CMD_START, opcode);
+	bcma_cc_read32(cc,  NAND_CMD_START);
+}
+
+static void bcm47xx_nflash_command(struct mtd_info *mtd, unsigned command,
+				int column, int page_addr)
+{
+	struct nand_chip *nchip = (struct nand_chip *)mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+	u32 pagesize = 1 << nchip->page_shift;
+
+	/* Command pre-processing step */
+	switch (command) {
+	case NAND_CMD_RESET:
+		bcm47xx_nflash_cmd(nflash->bcc, NCMD_FLASH_RESET);
+		break;
+
+	case NAND_CMD_STATUS:
+		nflash->next_opcode = NAND_CMD_STATUS;
+		read_offset = 0;
+		write_offset = 0;
+		break;
+
+	case NAND_CMD_READ0:
+		read_offset = page_addr * pagesize;
+		nflash->next_opcode = 0;
+		break;
+
+	case NAND_CMD_READOOB:
+		read_offset = page_addr * pagesize;
+		nflash->next_opcode = 0;
+		break;
+
+	case NAND_CMD_SEQIN:
+		write_offset = page_addr * pagesize;
+		nflash->next_opcode = 0;
+		break;
+
+	case NAND_CMD_PAGEPROG:
+		nflash->next_opcode = 0;
+		break;
+
+	case NAND_CMD_READID:
+		read_offset = column;
+		bcm47xx_nflash_cmd(nflash->bcc, NCMD_ID_RD);
+		nflash->next_opcode = NAND_DEVID;
+		break;
+
+	case NAND_CMD_ERASE1:
+		nflash->next_opcode = 0;
+		bcm47xx_nflash_erase(mtd, page_addr*pagesize, pagesize);
+		break;
+
+	case NAND_CMD_ERASE2:
+		break;
+
+	case NAND_CMD_RNDOUT:
+		if (column > mtd->writesize)
+			read_offset += (column - mtd->writesize);
+		else
+			read_offset += column;
+		break;
+
+	default:
+		pr_err("COMMAND not supported %x\n", command);
+		nflash->next_opcode = 0;
+		break;
+	}
+}
+
+/* This function is used by upper layer for select and
+ * deselect of the NAND chip.
+ * It is dummy function. */
+static void bcm47xx_nflash_select_chip(struct mtd_info *mtd, int chip)
+{
+}
+
+static u_char bcm47xx_nflash_read_byte(struct mtd_info *mtd)
+{
+	struct nand_chip *nchip = mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+	uint8_t ret = 0;
+	static u32 id;
+
+	if (nflash->next_opcode == 0)
+		return ret;
+
+	if (nflash->next_opcode == NAND_CMD_STATUS)
+		return NAND_STATUS_WP;
+
+	id = bcma_cc_read32(nflash->bcc, nflash->next_opcode);
+
+	if (nflash->next_opcode == NAND_DEVID) {
+		ret = (id >> (8*read_offset)) & 0xff;
+		read_offset++;
+	}
+
+	return ret;
+}
+
+static uint16_t bcm47xx_nflash_read_word(struct mtd_info *mtd)
+{
+	loff_t from = read_offset;
+	uint16_t buf = 0;
+	int bytes;
+
+	bcm47xx_nflash_read(mtd, from, sizeof(buf), &bytes, (u_char *)&buf);
+	return buf;
+}
+
+/* Write data of length len to buffer buf. The data to be
+ * written on NAND Flash is first copied to RAMbuffer. After the Data Input
+ * Operation by the NFC, the data is written to NAND Flash */
+static void bcm47xx_nflash_write_buf(struct mtd_info *mtd,
+				const u_char *buf, int len)
+{
+	bcm47xx_nflash_write(mtd, write_offset, buf, len);
+}
+
+/* Read the data buffer from the NAND Flash. To read the data from NAND
+ * Flash first the data output cycle is initiated by the NFC, which copies
+ * the data to RAMbuffer. This data of length len is then copied to buffer buf.
+ */
+static void bcm47xx_nflash_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+{
+	loff_t from = read_offset;
+	int bytes;
+
+	bcm47xx_nflash_read(mtd, from, len, &bytes, buf);
+}
+
+/* Used by the upper layer to verify the data in NAND Flash
+ * with the data in the buf. */
+static int bcm47xx_nflash_verify_buf(struct mtd_info *mtd,
+				const u_char *buf, int len)
+{
+	return -EFAULT;
+}
+
+static int bcm47xx_nflash_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
+{
+	struct nand_chip *nchip = mtd->priv;
+	struct bcm47xx_nflash *nflash = (struct bcm47xx_nflash *)nchip->priv;
+	int i;
+	uint off;
+	u32 pagesize = 1 << nchip->page_shift;
+	u32 blocksize = mtd->erasesize;
+
+	if ((ofs >> 20) >= nflash->size)
+		return 1;
+	if ((ofs & (blocksize - 1)) != 0)
+		return 1;
+
+	for (i = 0; i < 2; i++) {
+		off = ofs + pagesize;
+		bcma_cc_write32(nflash->bcc, NAND_CMD_ADDR, off);
+		bcm47xx_nflash_cmd(nflash->bcc, NCMD_SPARE_RD);
+		if (bcma_nflash_poll(nflash->bcc) < 0)
+			break;
+		if ((bcma_cc_read32(nflash->bcc, NAND_INTFC_STATUS) & NIST_SPARE_VALID) != NIST_SPARE_VALID)
+			return 1;
+		if ((bcma_cc_read32(nflash->bcc, NAND_SPARE_RD0) & 0xff) != 0xff)
+			return 1;
+	}
+	return 0;
+}
+
+const char *part_probes[] = { "cmdlinepart", NULL };
+static int bcm47xx_nflash_probe(struct platform_device *pdev)
+{
+	struct nand_chip *nchip;
+	struct mtd_info *mtd;
+	struct bcm47xx_nflash *nflash = dev_get_platdata(&pdev->dev);
+	int ret = 0;
+
+	mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
+	if (!mtd){
+		ret = -ENOMEM;
+		goto err_out;
+	}
+
+	nchip = kzalloc(sizeof(struct nand_chip), GFP_KERNEL);
+	if (!nchip) {
+		ret = -ENOMEM;
+		goto err_free_mtd;
+	}
+
+	/* Register with MTD */
+	mtd->priv = nchip;
+	mtd->owner = THIS_MODULE;
+	mtd->dev.parent = &pdev->dev;
+
+	/* 50 us command delay time */
+	nchip->chip_delay = 50;
+
+	nchip->priv = nflash;
+	nchip->dev_ready = bcm47xx_nflash_dev_ready;
+	nchip->cmdfunc = bcm47xx_nflash_command;
+	nchip->select_chip = bcm47xx_nflash_select_chip;
+	nchip->read_byte = bcm47xx_nflash_read_byte;
+	nchip->read_word = bcm47xx_nflash_read_word;
+	nchip->write_buf = bcm47xx_nflash_write_buf;
+	nchip->read_buf = bcm47xx_nflash_read_buf;
+	nchip->verify_buf = bcm47xx_nflash_verify_buf;
+	nchip->block_bad = bcm47xx_nflash_block_bad;
+	nchip->options = NAND_SKIP_BBTSCAN;
+
+	/* Not known */
+	nchip->ecc.mode = NAND_ECC_NONE;
+
+	/* first scan to find the device and get the page size */
+	if (nand_scan_ident(mtd, 1, NULL)) {
+		pr_err("nand_scan_ident failed\n");
+		ret = -ENXIO;
+		goto err_free_nchip;
+	}
+	nflash->size = mtd->size;
+	nflash->pagesize = 1 << nchip->page_shift;
+	nflash->blocksize = mtd->erasesize;
+	nflash->mtd = mtd;
+
+	/* second phase scan */
+	if (nand_scan_tail(mtd)) {
+		pr_err("nand_scan_tail failed\n");
+		ret = -ENXIO;
+		goto err_free_nchip;
+	}
+
+	mtd->name = "bcm47xx-nflash";
+	mtd->flags |= MTD_WRITEABLE;
+	ret = mtd_device_parse_register(mtd, part_probes, NULL, NULL, 0);
+
+	if (ret) {
+		pr_err("mtd_device_register failed\n");
+		goto err_free_nchip;
+	}
+
+	return 0;
+
+err_free_nchip:
+	kfree(nchip);
+err_free_mtd:
+	kfree(mtd);
+err_out:
+	return ret;
+}
+
+static int __devexit bcm47xx_nflash_remove(struct platform_device *pdev)
+{
+	struct bcm47xx_nflash *nflash = dev_get_platdata(&pdev->dev);
+	struct mtd_info *mtd = nflash->mtd;
+
+	if (nflash) {
+		/* Release resources, unregister device */
+		nand_release(mtd);
+		kfree(mtd->priv);
+		kfree(mtd);
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id bcm47xx_nflash_table[] = {
+	{ "bcm47xx-nflash", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, bcm47xx_nflash_table);
+
+static struct platform_driver bcm47xx_nflash_driver = {
+	.id_table	= bcm47xx_nflash_table,
+	.probe	= bcm47xx_nflash_probe,
+	.remove	= __devexit_p(bcm47xx_nflash_remove),
+	.driver	= {
+		.name = "bcm47xx-nflash",
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init init_bcm47xx_nflash(void)
+{
+	int ret = platform_driver_register(&bcm47xx_nflash_driver);
+
+	if (ret)
+		pr_err("error registering platform driver: %i\n", ret);
+	return ret;
+}
+
+static void __exit exit_bcm47xx_nflash(void)
+{
+	platform_driver_unregister(&bcm47xx_nflash_driver);
+}
+
+module_init(init_bcm47xx_nflash);
+module_exit(exit_bcm47xx_nflash);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("BCM47XX NAND flash driver");
--- /dev/null
+++ b/include/linux/mtd/bcm47xx_nand.h
@@ -0,0 +1,152 @@
+/*
+ * Broadcom chipcommon NAND flash interface
+ *
+ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+ * Copyright (C) 2009, Broadcom Corporation
+ * All Rights Reserved.
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ *
+ */
+
+#ifndef LINUX_MTD_BCM47XX_NAND_H_
+#define LINUX_MTD_BCM47XX_NAND_H_
+
+#include <linux/mtd/mtd.h>
+
+#define  NAND_FLASH1						0x1fc00000  /* MIPS Flash Region 1 */
+
+/* nand_cmd_start commands */
+#define	NCMD_NULL						0
+#define	NCMD_PAGE_RD					1
+#define	NCMD_SPARE_RD					2
+#define	NCMD_STATUS_RD					3
+#define	NCMD_PAGE_PROG					4
+#define	NCMD_SPARE_PROG				5
+#define	NCMD_COPY_BACK					6
+#define	NCMD_ID_RD						7
+#define	NCMD_BLOCK_ERASE				8
+#define	NCMD_FLASH_RESET				9
+#define	NCMD_LOCK						0xa
+#define	NCMD_LOCK_DOWN					0xb
+#define	NCMD_UNLOCK						0xc
+#define	NCMD_LOCK_STATUS				0xd
+
+/* nand_acc_control */
+#define	NAC_RD_ECC_EN					0x80000000
+#define	NAC_WR_ECC_EN					0x40000000
+#define	NAC_RD_ECC_BLK0_EN			0x20000000
+#define	NAC_FAST_PGM_RDIN				0x10000000
+#define	NAC_RD_ERASED_ECC_EN			0x08000000
+#define	NAC_PARTIAL_PAGE_EN			0x04000000
+#define	NAC_PAGE_HIT_EN				0x01000000
+#define	NAC_ECC_LEVEL0					0x00f00000
+#define	NAC_ECC_LEVEL					0x000f0000
+#define	NAC_SPARE_SIZE0				0x00003f00
+#define	NAC_SPARE_SIZE					0x0000003f
+
+/* nand_config */
+#define	NCF_CONFIG_LOCK				0x80000000
+#define	NCF_BLOCK_SIZE_MASK			0x70000000
+#define	NCF_BLOCK_SIZE_SHIFT			28
+#define	NCF_DEVICE_SIZE_MASK			0x0f000000
+#define	NCF_DEVICE_SIZE_SHIFT		24
+#define	NCF_DEVICE_WIDTH				0x00800000
+#define	NCF_PAGE_SIZE_MASK			0x00300000
+#define	NCF_PAGE_SIZE_SHIFT			20
+#define	NCF_FULL_ADDR_BYTES_MASK	0x00070000
+#define	NCF_FULL_ADDR_BYTES_SHIFT	16
+#define	NCF_COL_ADDR_BYTES_MASK		0x00007000
+#define	NCF_COL_ADDR_BYTES_SHIFT	12
+#define	NCF_BLK_ADDR_BYTES_MASK		0x00000700
+#define	NCF_BLK_ADDR_BYTES_SHIFT	8
+
+/* nand_intfc_status */
+#define	NIST_CTRL_READY				0x80000000
+#define	NIST_FLASH_READY				0x40000000
+#define	NIST_CACHE_VALID				0x20000000
+#define	NIST_SPARE_VALID				0x10000000
+#define	NIST_ERASED						0x08000000
+#define	NIST_STATUS						0x000000ff
+
+#define	NFL_SECTOR_SIZE				512
+
+#define	NFL_TABLE_END					0xffffffff
+#define	NFL_BOOT_SIZE					0x200000
+#define	NFL_BOOT_OS_SIZE				0x2000000
+
+/* Nand flash MLC controller registers (corerev >= 38) */
+#define	NAND_REVISION					0xC00
+#define	NAND_CMD_START					0xC04
+#define	NAND_CMD_ADDR_X				0xC08
+#define	NAND_CMD_ADDR					0xC0C
+#define	NAND_CMD_END_ADDR				0xC10
+#define	NAND_CS_NAND_SELECT			0xC14
+#define	NAND_CS_NAND_XOR				0xC18
+#define	NAND_SPARE_RD0					0xC20
+#define	NAND_SPARE_RD4					0xC24
+#define	NAND_SPARE_RD8					0xC28
+#define	NAND_SPARE_RD12				0xC2C
+#define	NAND_SPARE_WR0					0xC30
+#define	NAND_SPARE_WR4					0xC34
+#define	NAND_SPARE_WR8					0xC38
+#define	NAND_SPARE_WR12				0xC3C
+#define	NAND_ACC_CONTROL				0xC40
+#define	NAND_CONFIG						0xC48
+#define	NAND_TIMING_1					0xC50
+#define	NAND_TIMING_2					0xC54
+#define	NAND_SEMAPHORE					0xC58
+#define	NAND_DEVID						0xC60
+#define	NAND_DEVID_X					0xC64
+#define	NAND_BLOCK_LOCK_STATUS		0xC68
+#define	NAND_INTFC_STATUS				0xC6C
+#define	NAND_ECC_CORR_ADDR_X			0xC70
+#define	NAND_ECC_CORR_ADDR			0xC74
+#define	NAND_ECC_UNC_ADDR_X			0xC78
+#define	NAND_ECC_UNC_ADDR				0xC7C
+#define	NAND_READ_ERROR_COUNT		0xC80
+#define	NAND_CORR_STAT_THRESHOLD	0xC84
+#define	NAND_READ_ADDR_X				0xC90
+#define	NAND_READ_ADDR					0xC94
+#define	NAND_PAGE_PROGRAM_ADDR_X	0xC98
+#define	NAND_PAGE_PROGRAM_ADDR		0xC9C
+#define	NAND_COPY_BACK_ADDR_X		0xCA0
+#define	NAND_COPY_BACK_ADDR			0xCA4
+#define	NAND_BLOCK_ERASE_ADDR_X		0xCA8
+#define	NAND_BLOCK_ERASE_ADDR		0xCAC
+#define	NAND_INV_READ_ADDR_X			0xCB0
+#define	NAND_INV_READ_ADDR			0xCB4
+#define	NAND_BLK_WR_PROTECT			0xCC0
+#define	NAND_ACC_CONTROL_CS1			0xCD0
+#define	NAND_CONFIG_CS1				0xCD4
+#define	NAND_TIMING_1_CS1				0xCD8
+#define	NAND_TIMING_2_CS1				0xCDC
+#define	NAND_SPARE_RD16				0xD30
+#define	NAND_SPARE_RD20				0xD34
+#define	NAND_SPARE_RD24				0xD38
+#define	NAND_SPARE_RD28				0xD3C
+#define	NAND_CACHE_ADDR				0xD40
+#define	NAND_CACHE_DATA				0xD44
+#define	NAND_CTRL_CONFIG				0xD48
+#define	NAND_CTRL_STATUS				0xD4C
+
+struct bcma_drv_cc;
+
+struct bcm47xx_nflash {
+	struct bcma_drv_cc *bcc;
+
+	bool present;
+	bool boot;		/* This is the flash the SoC boots from */
+	u32 blocksize;		/* Block size */
+	u32 pagesize;		/* Page size */
+
+	u32 size;		/* Total size in bytes */
+	u32 next_opcode; /* Next expected command from upper NAND layer */
+
+	struct mtd_info *mtd;
+};
+
+#endif /* LINUX_MTD_BCM47XX_NAND_H_ */