brcm47xx: add support for NAND flash on devices using bcma

This patch add support for the NAND flash on BCM5357 based devices like the WNR3500Lv2.

Thank you Tathagata Das <tathagata@alumnux.com> for the patch


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30943 3c298f89-4303-0410-b956-a3cf2f4a3e73

14 files changed, 1171 insertions, 28 deletions

diff --git a/target/linux/brcm47xx/config-3.2 b/target/linux/brcm47xx/config-3.2
index e4641ed10e..39fac67ad2 100644
--- a/target/linux/brcm47xx/config-3.2
+++ b/target/linux/brcm47xx/config-3.2
@@ -24,6 +24,7 @@ CONFIG_BCMA_DRIVER_PCI_HOSTMODE=y
 CONFIG_BCMA_HOST_PCI=y
 CONFIG_BCMA_HOST_PCI_POSSIBLE=y
 CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_NFLASH=y
 CONFIG_BCMA_POSSIBLE=y
 CONFIG_BCMA_SFLASH=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -94,6 +95,10 @@ CONFIG_MIPS_MT_DISABLED=y
 CONFIG_MTD_BCM47XX_PARTS=y
 CONFIG_MTD_BCM47XX_PFLASH=y
 CONFIG_MTD_BCM47XX_SFLASH=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_BCM47XX=y
+CONFIG_MTD_NAND_ECC=y
+# CONFIG_MTD_SM_COMMON is not set
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEED_PER_CPU_KM=y
 CONFIG_PAGEFLAGS_EXTENDED=y
diff --git a/target/linux/brcm47xx/patches-3.2/030-bcm47xx-bcma-nandflash.patch b/target/linux/brcm47xx/patches-3.2/030-bcm47xx-bcma-nandflash.patch
new file mode 100644
index 0000000000..4f4386e937
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.2/030-bcm47xx-bcma-nandflash.patch
@@ -0,0 +1,1138 @@
+--- a/arch/mips/bcm47xx/bus.c
++++ b/arch/mips/bcm47xx/bus.c
+@@ -2,6 +2,7 @@
+  * BCM947xx nvram variable access
+  *
+  * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
++ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+  *
+  * 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
+@@ -92,3 +93,9 @@ void bcm47xx_sflash_struct_ssb_init(stru
+ 	sflash->numblocks = scc->sflash.numblocks;
+ 	sflash->size = scc->sflash.size;
+ }
++
++void bcm47xx_nflash_struct_bcma_init(struct bcm47xx_nflash *nflash, struct bcma_drv_cc *bcc)
++{
++	nflash->nflash_type = BCM47XX_BUS_TYPE_BCMA;
++	nflash->bcc = bcc;
++}
+--- a/arch/mips/bcm47xx/nvram.c
++++ b/arch/mips/bcm47xx/nvram.c
+@@ -4,6 +4,7 @@
+  * Copyright (C) 2005 Broadcom Corporation
+  * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+  * Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
++ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+  *
+  * 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
+@@ -21,6 +22,7 @@
+ #include <asm/mach-bcm47xx/nvram.h>
+ #include <asm/mach-bcm47xx/bcm47xx.h>
+ #include <asm/mach-bcm47xx/bus.h>
++#include <linux/mtd/bcm47xx_nand.h>
+ 
+ static char nvram_buf[NVRAM_SPACE];
+ 
+@@ -137,6 +139,51 @@ found:
+ 	return 0;
+ }
+ 
++static int early_nvram_init_nflash(void)
++{
++	struct nvram_header *header;
++	u32 off;
++	int ret;
++	int len;
++	u32 flash_size = bcm47xx_nflash.size;
++	u8 tmpbuf[NFL_SECTOR_SIZE];
++	int i;
++	u32 *src, *dst;
++
++	/* check if the struct is already initilized */
++	if (!flash_size)
++		return -1;
++	
++	cfe_env = 0;
++
++	off = FLASH_MIN;
++	while (off <= flash_size) {
++		ret = bcma_nflash_read(bcm47xx_nflash.bcc, off, NFL_SECTOR_SIZE, tmpbuf);
++		if (ret != NFL_SECTOR_SIZE)
++			goto done;
++		header = (struct nvram_header *)tmpbuf;
++		if (header->magic == NVRAM_HEADER)
++			goto found;
++		off <<= 1;
++	}
++
++	ret = -1;
++	goto done;
++
++found:
++	len = header->len;
++	header = (struct nvram_header *) KSEG1ADDR(NAND_FLASH1 + off);
++	src = (u32 *) header;
++	dst = (u32 *) nvram_buf;
++	for (i = 0; i < sizeof(struct nvram_header); i += 4)
++		*dst++ = *src++;
++	for (; i < len && i < NVRAM_SPACE; i += 4)
++		*dst++ = *src++;
++	ret = 0;
++done:
++	return ret;
++}
++
+ static void early_nvram_init(void)
+ {
+ 	int err = 0;
+@@ -163,6 +210,10 @@ static void early_nvram_init(void)
+ 			err = early_nvram_init_sflash();
+ 			if (err < 0)
+ 				printk(KERN_WARNING "can not read from flash: %i\n", err);
++		} else if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_NFLASH) {
++			err = early_nvram_init_nflash();
++			if (err < 0)
++				printk(KERN_WARNING "can not read from nflash: %i\n", err);
+ 		} else {
+ 			printk(KERN_WARNING "unknow flash type\n");
+ 		}
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -4,6 +4,7 @@
+  *  Copyright (C) 2006 Michael Buesch <m@bues.ch>
+  *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
+  *  Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
++ *  Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+  *
+  *  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
+@@ -46,6 +47,7 @@ enum bcm47xx_bus_type bcm47xx_bus_type;
+ EXPORT_SYMBOL(bcm47xx_bus_type);
+ 
+ struct bcm47xx_sflash bcm47xx_sflash;
++struct bcm47xx_nflash bcm47xx_nflash;
+ 
+ static void bcm47xx_machine_restart(char *command)
+ {
+@@ -325,6 +327,9 @@ static void __init bcm47xx_register_bcma
+ 
+ 	if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_SFLASH)
+ 		bcm47xx_sflash_struct_bcma_init(&bcm47xx_sflash, &bcm47xx_bus.bcma.bus.drv_cc);
++	
++	if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_NFLASH)
++		bcm47xx_nflash_struct_bcma_init(&bcm47xx_nflash, &bcm47xx_bus.bcma.bus.drv_cc);
+ }
+ #endif
+ 
+@@ -395,6 +400,19 @@ static struct platform_device bcm47xx_sf
+ 	.num_resources	= 1,
+ };
+ 
++static struct resource bcm47xx_nflash_resource = {
++	.name	= "bcm47xx_nflash",
++	.start	= 0,
++	.end	= 0,
++	.flags  = 0,
++};
++
++static struct platform_device bcm47xx_nflash_dev = {
++	.name		= "bcm47xx_nflash",
++	.resource	= &bcm47xx_nflash_resource,
++	.num_resources	= 1,
++};
++
+ static int __init bcm47xx_register_flash(void)
+ {
+ #ifdef CONFIG_BCM47XX_SSB
+@@ -429,6 +447,9 @@ static int __init bcm47xx_register_flash
+ 		} else if (drv_cc->flash_type == BCMA_SFLASH) {
+ 			bcm47xx_sflash_dev.dev.platform_data = &bcm47xx_sflash;
+ 			return platform_device_register(&bcm47xx_sflash_dev);
++		} else if (drv_cc->flash_type == BCMA_NFLASH) {
++			bcm47xx_nflash_dev.dev.platform_data = &bcm47xx_nflash;
++			return platform_device_register(&bcm47xx_nflash_dev);
+ 		} else {
+ 			printk(KERN_ERR "No flash device found\n");
+ 			return -1;
+--- a/arch/mips/include/asm/mach-bcm47xx/bus.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bus.h
+@@ -2,6 +2,7 @@
+  * BCM947xx nvram variable access
+  *
+  * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
++ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+  *
+  * 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
+@@ -13,6 +14,7 @@
+ #include <linux/bcma/bcma.h>
+ #include <linux/mtd/mtd.h>
+ #include <bcm47xx.h>
++#include <linux/mtd/nand.h>
+ 
+ struct bcm47xx_sflash {
+ 	enum bcm47xx_bus_type sflash_type;
+@@ -38,3 +40,18 @@ void bcm47xx_sflash_struct_bcma_init(str
+ void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc);
+ 
+ extern struct bcm47xx_sflash bcm47xx_sflash;
++
++struct bcm47xx_nflash {
++	enum bcm47xx_bus_type nflash_type;
++	struct bcma_drv_cc *bcc;
++
++	u32 size;		/* Total size in bytes */
++	u32 next_opcode; /* Next expected command from upper NAND layer */
++
++	struct mtd_info mtd;
++	struct nand_chip nand;
++};
++
++void bcm47xx_nflash_struct_bcma_init(struct bcm47xx_nflash *nflash, struct bcma_drv_cc *bcc);
++
++extern struct bcm47xx_nflash bcm47xx_nflash;
+--- a/drivers/bcma/bcma_private.h
++++ b/drivers/bcma/bcma_private.h
+@@ -46,6 +46,11 @@ u32 bcma_pmu_get_clockcpu(struct bcma_dr
+ int bcma_sflash_init(struct bcma_drv_cc *cc);
+ #endif /* CONFIG_BCMA_SFLASH */
+ 
++#ifdef CONFIG_BCMA_NFLASH
++/* driver_chipcommon_nflash.c */
++int bcma_nflash_init(struct bcma_drv_cc *cc);
++#endif /* CONFIG_BCMA_NFLASH */
++
+ #ifdef CONFIG_BCMA_HOST_PCI
+ /* host_pci.c */
+ extern int __init bcma_host_pci_init(void);
+--- /dev/null
++++ b/drivers/bcma/driver_chipcommon_nflash.c
+@@ -0,0 +1,154 @@
++/*
++ * BCMA nand flash interface
++ *
++ * Copyright 2011, Tathagata Das <tathagata@alumnux.com>
++ * Copyright 2010, Broadcom Corporation
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++#include <linux/bcma/bcma.h>
++#include <linux/bcma/bcma_driver_chipcommon.h>
++#include <linux/delay.h>
++#include <linux/mtd/bcm47xx_nand.h>
++#include <linux/mtd/nand.h>
++
++#include "bcma_private.h"
++
++/* Issue a nand flash command */
++static inline void bcma_nflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
++{
++	bcma_cc_write32(cc, NAND_CMD_START, opcode);
++	bcma_cc_read32(cc,  NAND_CMD_START);
++}
++
++/* Check offset and length */
++static int bcma_nflash_offset_is_valid(struct bcma_drv_cc *cc, u32 offset, u32 len, u32 mask)
++{
++	if ((offset & mask) != 0 || (len & mask) != 0) {
++		pr_err("%s(): Address is not aligned. offset: %x, len: %x, mask: %x\n", __func__, offset, len, mask);
++		return 1;
++	}
++
++	if ((((offset + len) >> 20) >= cc->nflash.size) &&
++		(((offset + len) & ((1 << 20) - 1)) != 0)) {
++		pr_err("%s(): Address is outside Flash memory region. offset: %x, len: %x, mask: %x\n", __func__, offset, len, mask);
++		return 1;
++	}
++
++	return 0;
++}
++
++/* Read len bytes starting at offset into buf. Returns number of bytes read. */
++int bcma_nflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, u8 *buf)
++{
++	u32 mask;
++	int i;
++	u32 *to, val, res;
++
++	mask = NFL_SECTOR_SIZE - 1;
++	if (bcma_nflash_offset_is_valid(cc, offset, len, mask))
++		return 0;
++
++	to = (u32 *)buf;
++	res = len;
++	while (res > 0) {
++		bcma_cc_write32(cc, NAND_CMD_ADDR, offset);
++		bcma_nflash_cmd(cc, NCMD_PAGE_RD);
++		if (bcma_nflash_poll(cc) < 0)
++			break;
++		val = bcma_cc_read32(cc, NAND_INTFC_STATUS);
++		if ((val & NIST_CACHE_VALID) == 0)
++			break;
++		bcma_cc_write32(cc, NAND_CACHE_ADDR, 0);
++		for (i = 0; i < NFL_SECTOR_SIZE; i += 4, to++) {
++			*to = bcma_cc_read32(cc, NAND_CACHE_DATA);
++		}
++		res -= NFL_SECTOR_SIZE;
++		offset += NFL_SECTOR_SIZE;
++	}
++	return (len - res);
++}
++
++#define NF_RETRIES   1000000
++
++/* Poll for command completion. Returns zero when complete. */
++int bcma_nflash_poll(struct bcma_drv_cc *cc)
++{
++	u32 retries = NF_RETRIES;
++	u32 pollmask = NIST_CTRL_READY|NIST_FLASH_READY;
++	u32 mask;
++
++	while (retries--) {
++		mask = bcma_cc_read32(cc, NAND_INTFC_STATUS) & pollmask;
++		if (mask == pollmask)
++			return 0;
++		cpu_relax();
++	}
++
++	if (!retries) {
++		pr_err("bcma_nflash_poll: not ready\n");
++		return -1;
++	}
++
++	return 0;
++}
++
++/* Write len bytes starting at offset into buf. Returns success (0) or failure (!0).
++ * Should poll for completion.
++ */
++int bcma_nflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len,
++			    const u8 *buf)
++{
++	u32 mask;
++	int i;
++	u32 *from, res, reg;
++
++	mask = cc->nflash.pagesize - 1;
++	if (bcma_nflash_offset_is_valid(cc, offset, len, mask))
++		return 1;
++	
++	/* disable partial page enable */
++	reg = bcma_cc_read32(cc, NAND_ACC_CONTROL);
++	reg &= ~NAC_PARTIAL_PAGE_EN;
++	bcma_cc_write32(cc, NAND_ACC_CONTROL, reg);
++
++	from = (u32 *)buf;
++	res = len;
++	while (res > 0) {
++		bcma_cc_write32(cc, NAND_CACHE_ADDR, 0);
++		for (i = 0; i < cc->nflash.pagesize; i += 4, from++) {
++			if (i % 512 == 0)
++				bcma_cc_write32(cc, NAND_CMD_ADDR, i);
++			bcma_cc_write32(cc, NAND_CACHE_DATA, *from);
++		}
++		bcma_cc_write32(cc, NAND_CMD_ADDR, offset + cc->nflash.pagesize - 512);
++		bcma_nflash_cmd(cc, NCMD_PAGE_PROG);
++		if (bcma_nflash_poll(cc) < 0)
++			break;
++		res -= cc->nflash.pagesize;
++		offset += cc->nflash.pagesize;
++	}
++
++	if (res <= 0)
++		return 0;
++	else
++		return (len - res);
++}
++
++/* Erase a region. Returns success (0) or failure (-1). 
++ * Poll for completion.
++ */
++int bcma_nflash_erase(struct bcma_drv_cc *cc, u32 offset)
++{
++	if ((offset >> 20) >= cc->nflash.size)
++		return -1;
++	if ((offset & (cc->nflash.blocksize - 1)) != 0)
++		return -1;
++
++	bcma_cc_write32(cc, NAND_CMD_ADDR, offset);
++	bcma_nflash_cmd(cc, NCMD_BLOCK_ERASE);
++	if (bcma_nflash_poll(cc) < 0)
++		return -1;
++	return 0;
++}
+--- a/drivers/bcma/driver_mips.c
++++ b/drivers/bcma/driver_mips.c
+@@ -6,6 +6,7 @@
+  * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de>
+  * Copyright 2010, Bernhard Loos <bernhardloos@googlemail.com>
+  * Copyright 2011, Hauke Mehrtens <hauke@hauke-m.de>
++ * Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
+  *
+  * Licensed under the GNU/GPL. See COPYING for details.
+  */
+@@ -182,6 +183,17 @@ static void bcma_core_mips_flash_detect(
+ {
+ 	struct bcma_bus *bus = mcore->core->bus;
+ 
++	if (bus->drv_cc.core->id.rev == 38 
++		&& (bus->drv_cc.status & (1 << 4)) != 0) {
++#ifdef CONFIG_BCMA_NFLASH
++		pr_info("found nand flash.\n");
++		bus->drv_cc.flash_type = BCMA_NFLASH;
++#else
++		pr_info("NAND flash not supported.\n");
++#endif
++		return;
++	}
++
+ 	switch (bus->drv_cc.capabilities & BCMA_CC_CAP_FLASHT) {
+ 	case BCMA_CC_FLASHT_STSER:
+ 	case BCMA_CC_FLASHT_ATSER:
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -43,6 +43,11 @@ config BCMA_SFLASH
+ 	depends on BCMA_DRIVER_MIPS
+ 	default y
+ 
++config BCMA_NFLASH
++	bool
++	depends on BCMA_DRIVER_MIPS
++	default y
++
+ config BCMA_DRIVER_MIPS
+ 	bool "BCMA Broadcom MIPS core driver"
+ 	depends on BCMA && MIPS
+--- a/drivers/bcma/Makefile
++++ b/drivers/bcma/Makefile
+@@ -1,6 +1,7 @@
+ bcma-y					+= main.o scan.o core.o sprom.o
+ bcma-y					+= driver_chipcommon.o driver_chipcommon_pmu.o
+ bcma-$(CONFIG_BCMA_SFLASH)		+= driver_chipcommon_sflash.o
++bcma-$(CONFIG_BCMA_NFLASH)		+= driver_chipcommon_nflash.o
+ bcma-y					+= driver_pci.o
+ bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE)	+= driver_pci_host.o
+ bcma-$(CONFIG_BCMA_DRIVER_MIPS)		+= driver_mips.o
+--- /dev/null
++++ b/drivers/mtd/nand/bcm47xx_nand.c
+@@ -0,0 +1,506 @@
++/*
++ * 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 <bus.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_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip);
++static int bcm47xx_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_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_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_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_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_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_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_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_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_select_chip(struct mtd_info *mtd, int chip)
++{
++}
++
++static u_char bcm47xx_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_read_word(struct mtd_info *mtd)
++{
++	loff_t from = read_offset;
++	uint16_t buf = 0;
++	int bytes;
++
++	bcm47xx_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_write_buf(struct mtd_info *mtd,
++				const u_char *buf, int len)
++{
++	bcm47xx_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_read_buf(struct mtd_info *mtd, u_char *buf, int len)
++{
++	loff_t from = read_offset;
++	int bytes;
++
++	bcm47xx_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_verify_buf(struct mtd_info *mtd,
++				const u_char *buf, int len)
++{
++	return -EFAULT;
++}
++
++static int bcm47xx_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_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 = &nflash->mtd;
++	nchip = &nflash->nand;
++
++	/* 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_dev_ready;
++	nchip->cmdfunc = bcm47xx_command;
++	nchip->select_chip = bcm47xx_select_chip;
++	nchip->read_byte = bcm47xx_read_byte;
++	nchip->read_word = bcm47xx_read_word;
++	nchip->write_buf = bcm47xx_write_buf;
++	nchip->read_buf = bcm47xx_read_buf;
++	nchip->verify_buf = bcm47xx_verify_buf;
++	nchip->block_bad = bcm47xx_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 done;
++	}
++	nflash->bcc->nflash.size = mtd->size;
++	nflash->bcc->nflash.pagesize = 1 << nchip->page_shift;
++	nflash->bcc->nflash.blocksize = mtd->erasesize;
++	bcm47xx_nflash.size = mtd->size;
++
++	/* second phase scan */
++	if (nand_scan_tail(mtd)) {
++		pr_err("nand_scan_tail failed\n");
++		ret = -ENXIO;
++		goto done;
++	}
++
++	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");
++		return ret;
++	}
++	
++	return 0;
++
++done:
++	return ret;
++}
++
++static int __devexit bcm47xx_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);
++	}
++
++	return 0;
++}
++
++static struct platform_driver bcm47xx_driver = {
++	.remove = __devexit_p(bcm47xx_remove),
++	.driver = {
++		.name = "bcm47xx_nflash",
++		.owner = THIS_MODULE,
++	},
++};
++
++static int __init init_bcm47xx_nflash(void)
++{
++	int ret = platform_driver_probe(&bcm47xx_driver, bcm47xx_probe);
++
++	if (ret)
++		pr_err("error registering platform driver: %i\n", ret);
++	return ret;
++}
++
++static void __exit exit_bcm47xx_nflash(void)
++{
++	platform_driver_unregister(&bcm47xx_driver);
++}
++
++module_init(init_bcm47xx_nflash);
++module_exit(exit_bcm47xx_nflash);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("BCM47XX NAND flash driver");
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -537,4 +537,12 @@ 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
++	select MTD_PARTITIONS
++	help
++	  Support for bcm47xx nand flash
++
+ endif # MTD_NAND
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -49,5 +49,6 @@ 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
+--- a/include/linux/bcma/bcma_driver_chipcommon.h
++++ b/include/linux/bcma/bcma_driver_chipcommon.h
+@@ -376,6 +376,7 @@ struct bcma_chipcommon_pmu {
+ enum bcma_flash_type {
+ 	BCMA_PFLASH,
+ 	BCMA_SFLASH,
++	BCMA_NFLASH,
+ };
+ 
+ struct bcma_pflash {
+@@ -392,6 +393,14 @@ struct bcma_sflash {
+ };
+ #endif /* CONFIG_BCMA_SFLASH */
+ 
++#ifdef CONFIG_BCMA_NFLASH
++struct bcma_nflash {
++	u32 blocksize;		/* Block size */
++	u32 pagesize;		/* Page size */
++	u32 size;		/* Total size in bytes */
++};
++#endif
++
+ struct bcma_serial_port {
+ 	void *regs;
+ 	unsigned long clockspeed;
+@@ -417,6 +426,9 @@ struct bcma_drv_cc {
+ #ifdef CONFIG_BCMA_SFLASH
+ 		struct bcma_sflash sflash;
+ #endif /* CONFIG_BCMA_SFLASH */
++#ifdef CONFIG_BCMA_NFLASH
++		struct bcma_nflash nflash;
++#endif
+ 	};
+ 
+ 	int nr_serial_ports;
+@@ -483,4 +495,13 @@ int bcma_sflash_commit(struct bcma_drv_c
+ 			     const u8 *buf);
+ #endif /* CONFIG_BCMA_SFLASH */
+ 
++#ifdef CONFIG_BCMA_NFLASH
++/* Chipcommon nflash support. */
++int bcma_nflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, u8 *buf);
++int bcma_nflash_poll(struct bcma_drv_cc *cc);
++int bcma_nflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len, const u8 *buf);
++int bcma_nflash_erase(struct bcma_drv_cc *cc, u32 offset);
++int bcma_nflash_commit(struct bcma_drv_cc *cc, u32 offset, u32 len, const u8 *buf);
++#endif
++
+ #endif /* LINUX_BCMA_DRIVER_CC_H_ */
+--- /dev/null
++++ b/include/linux/mtd/bcm47xx_nand.h
+@@ -0,0 +1,134 @@
++/*
++ * 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 _nflash_h_
++#define _nflash_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
++
++#endif /* _nflash_h_ */
diff --git a/target/linux/brcm47xx/patches-3.2/042-bcma-export-bcma_pcie_read.patch b/target/linux/brcm47xx/patches-3.2/042-bcma-export-bcma_pcie_read.patch
index 70bb497bf2..062a29d2f1 100644
--- a/target/linux/brcm47xx/patches-3.2/042-bcma-export-bcma_pcie_read.patch
+++ b/target/linux/brcm47xx/patches-3.2/042-bcma-export-bcma_pcie_read.patch
@@ -13,9 +13,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 
 --- a/drivers/bcma/bcma_private.h
 +++ b/drivers/bcma/bcma_private.h
-@@ -46,6 +46,8 @@ u32 bcma_pmu_get_clockcpu(struct bcma_dr
- int bcma_sflash_init(struct bcma_drv_cc *cc);
- #endif /* CONFIG_BCMA_SFLASH */
+@@ -51,6 +51,8 @@ int bcma_sflash_init(struct bcma_drv_cc
+ int bcma_nflash_init(struct bcma_drv_cc *cc);
+ #endif /* CONFIG_BCMA_NFLASH */
  
 +u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address);
 +
diff --git a/target/linux/brcm47xx/patches-3.2/043-bcma-make-some-functions-__devinit.patch b/target/linux/brcm47xx/patches-3.2/043-bcma-make-some-functions-__devinit.patch
index 2534a3a6b7..340172d44f 100644
--- a/target/linux/brcm47xx/patches-3.2/043-bcma-make-some-functions-__devinit.patch
+++ b/target/linux/brcm47xx/patches-3.2/043-bcma-make-some-functions-__devinit.patch
@@ -28,7 +28,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  void bcma_bus_unregister(struct bcma_bus *bus);
  int __init bcma_bus_early_register(struct bcma_bus *bus,
  				   struct bcma_device *core_cc,
-@@ -55,7 +55,7 @@ extern void __exit bcma_host_pci_exit(vo
+@@ -60,7 +60,7 @@ extern void __exit bcma_host_pci_exit(vo
  #endif /* CONFIG_BCMA_HOST_PCI */
  
  #ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
diff --git a/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch b/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch
index 2afd09aeed..850b52428d 100644
--- a/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch
+++ b/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch
@@ -96,7 +96,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +}
 --- a/drivers/bcma/bcma_private.h
 +++ b/drivers/bcma/bcma_private.h
-@@ -55,6 +55,7 @@ extern void __exit bcma_host_pci_exit(vo
+@@ -60,6 +60,7 @@ extern void __exit bcma_host_pci_exit(vo
  #endif /* CONFIG_BCMA_HOST_PCI */
  
  #ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
diff --git a/target/linux/brcm47xx/patches-3.2/114-MIPS-BCM47xx-Setup-and-register-serial-early.patch b/target/linux/brcm47xx/patches-3.2/114-MIPS-BCM47xx-Setup-and-register-serial-early.patch
index 12028c4a4f..ddf257b55b 100644
--- a/target/linux/brcm47xx/patches-3.2/114-MIPS-BCM47xx-Setup-and-register-serial-early.patch
+++ b/target/linux/brcm47xx/patches-3.2/114-MIPS-BCM47xx-Setup-and-register-serial-early.patch
@@ -15,7 +15,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
-@@ -32,6 +32,8 @@
+@@ -33,6 +33,8 @@
  #include <linux/ssb/ssb_embedded.h>
  #include <linux/bcma/bcma_soc.h>
  #include <linux/platform_device.h>
@@ -24,7 +24,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  #include <asm/bootinfo.h>
  #include <asm/reboot.h>
  #include <asm/time.h>
-@@ -279,6 +281,31 @@ static int bcm47xx_get_invariants(struct
+@@ -281,6 +283,31 @@ static int bcm47xx_get_invariants(struct
  	return 0;
  }
  
@@ -56,7 +56,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  static void __init bcm47xx_register_ssb(void)
  {
  	int err;
-@@ -311,6 +338,10 @@ static void __init bcm47xx_register_ssb(
+@@ -313,6 +340,10 @@ static void __init bcm47xx_register_ssb(
  			memcpy(&mcore->serial_ports[1], &port, sizeof(port));
  		}
  	}
diff --git a/target/linux/brcm47xx/patches-3.2/196-MIPS-BCM47XX-return-number-of-written-bytes-in-nvram.patch b/target/linux/brcm47xx/patches-3.2/196-MIPS-BCM47XX-return-number-of-written-bytes-in-nvram.patch
index 926ec844c7..ce226f36e2 100644
--- a/target/linux/brcm47xx/patches-3.2/196-MIPS-BCM47XX-return-number-of-written-bytes-in-nvram.patch
+++ b/target/linux/brcm47xx/patches-3.2/196-MIPS-BCM47XX-return-number-of-written-bytes-in-nvram.patch
@@ -12,7 +12,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 
 --- a/arch/mips/bcm47xx/nvram.c
 +++ b/arch/mips/bcm47xx/nvram.c
-@@ -192,8 +192,7 @@ int nvram_getenv(char *name, char *val,
+@@ -243,8 +243,7 @@ int nvram_getenv(char *name, char *val,
  		value = eq + 1;
  		if ((eq - var) == strlen(name) &&
  			strncmp(var, name, (eq - var)) == 0) {
diff --git a/target/linux/brcm47xx/patches-3.2/198-MIPS-BCM47XX-move-and-extend-sprom-parsing.patch b/target/linux/brcm47xx/patches-3.2/198-MIPS-BCM47XX-move-and-extend-sprom-parsing.patch
index a8272cd4c0..b817d8adff 100644
--- a/target/linux/brcm47xx/patches-3.2/198-MIPS-BCM47XX-move-and-extend-sprom-parsing.patch
+++ b/target/linux/brcm47xx/patches-3.2/198-MIPS-BCM47XX-move-and-extend-sprom-parsing.patch
@@ -28,7 +28,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  obj-$(CONFIG_BCM47XX_SSB)	+= wgt634u.o
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
-@@ -91,156 +91,7 @@ static void bcm47xx_machine_halt(void)
+@@ -93,156 +93,7 @@ static void bcm47xx_machine_halt(void)
  }
  
  #ifdef CONFIG_BCM47XX_SSB
diff --git a/target/linux/brcm47xx/patches-3.2/199-MIPS-BCM47XX-provide-sprom-to-bcma-bus.patch b/target/linux/brcm47xx/patches-3.2/199-MIPS-BCM47XX-provide-sprom-to-bcma-bus.patch
index e3d2527929..c96813c857 100644
--- a/target/linux/brcm47xx/patches-3.2/199-MIPS-BCM47XX-provide-sprom-to-bcma-bus.patch
+++ b/target/linux/brcm47xx/patches-3.2/199-MIPS-BCM47XX-provide-sprom-to-bcma-bus.patch
@@ -20,10 +20,10 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
   *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
 - *  Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
 + *  Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
+  *  Copyright (C) 2011-2012 Tathagata Das <tathagata@alumnux.com>
   *
   *  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
-@@ -91,7 +91,7 @@ static void bcm47xx_machine_halt(void)
+@@ -93,7 +93,7 @@ static void bcm47xx_machine_halt(void)
  }
  
  #ifdef CONFIG_BCM47XX_SSB
@@ -32,7 +32,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  {
  	char prefix[10];
  
-@@ -108,7 +108,7 @@ static int bcm47xx_get_sprom(struct ssb_
+@@ -110,7 +110,7 @@ static int bcm47xx_get_sprom(struct ssb_
  }
  
  static int bcm47xx_get_invariants(struct ssb_bus *bus,
@@ -41,7 +41,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  {
  	char buf[20];
  
-@@ -163,7 +163,7 @@ static void __init bcm47xx_register_ssb(
+@@ -165,7 +165,7 @@ static void __init bcm47xx_register_ssb(
  	char buf[100];
  	struct ssb_mipscore *mcore;
  
@@ -50,7 +50,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  	if (err)
  		printk(KERN_WARNING "bcm47xx: someone else already registered"
  			" a ssb SPROM callback handler (err %d)\n", err);
-@@ -197,10 +197,41 @@ static void __init bcm47xx_register_ssb(
+@@ -199,10 +199,41 @@ static void __init bcm47xx_register_ssb(
  #endif
  
  #ifdef CONFIG_BCM47XX_BCMA
diff --git a/target/linux/brcm47xx/patches-3.2/231-bcma_reorder_sprom_fill.patch b/target/linux/brcm47xx/patches-3.2/231-bcma_reorder_sprom_fill.patch
index c991ed313f..ae7b7d4dcd 100644
--- a/target/linux/brcm47xx/patches-3.2/231-bcma_reorder_sprom_fill.patch
+++ b/target/linux/brcm47xx/patches-3.2/231-bcma_reorder_sprom_fill.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
-@@ -96,6 +96,7 @@ static int bcm47xx_get_sprom_ssb(struct
+@@ -98,6 +98,7 @@ static int bcm47xx_get_sprom_ssb(struct
  	char prefix[10];
  
  	if (bus->bustype == SSB_BUSTYPE_PCI) {
@@ -8,7 +8,7 @@
  		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
  			 bus->host_pci->bus->number + 1,
  			 PCI_SLOT(bus->host_pci->devfn));
-@@ -124,6 +125,7 @@ static int bcm47xx_get_invariants(struct
+@@ -126,6 +127,7 @@ static int bcm47xx_get_invariants(struct
  	if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
  		iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
  
@@ -16,7 +16,7 @@
  	bcm47xx_fill_sprom(&iv->sprom, NULL);
  
  	if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
-@@ -203,12 +205,14 @@ static int bcm47xx_get_sprom_bcma(struct
+@@ -205,12 +207,14 @@ static int bcm47xx_get_sprom_bcma(struct
  	struct bcma_device *core;
  
  	if (bus->hosttype == BCMA_HOSTTYPE_PCI) {
diff --git a/target/linux/brcm47xx/patches-3.2/400-arch-bcm47xx.patch b/target/linux/brcm47xx/patches-3.2/400-arch-bcm47xx.patch
index 38a1fce643..df98b12d49 100644
--- a/target/linux/brcm47xx/patches-3.2/400-arch-bcm47xx.patch
+++ b/target/linux/brcm47xx/patches-3.2/400-arch-bcm47xx.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/bcm47xx/nvram.c
 +++ b/arch/mips/bcm47xx/nvram.c
-@@ -198,3 +198,30 @@ int nvram_getenv(char *name, char *val,
+@@ -249,3 +249,30 @@ int nvram_getenv(char *name, char *val,
  	return NVRAM_ERR_ENVNOTFOUND;
  }
  EXPORT_SYMBOL(nvram_getenv);
@@ -33,7 +33,7 @@
 +EXPORT_SYMBOL(nvram_get);
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
-@@ -355,3 +355,20 @@ static int __init bcm47xx_register_flash
+@@ -376,3 +376,20 @@ static int __init bcm47xx_register_flash
  	return -1;
  }
  fs_initcall(bcm47xx_register_flash);
diff --git a/target/linux/brcm47xx/patches-3.2/820-wgt634u-nvram-fix.patch b/target/linux/brcm47xx/patches-3.2/820-wgt634u-nvram-fix.patch
index 3ccaa9557b..3414ad7310 100644
--- a/target/linux/brcm47xx/patches-3.2/820-wgt634u-nvram-fix.patch
+++ b/target/linux/brcm47xx/patches-3.2/820-wgt634u-nvram-fix.patch
@@ -245,8 +245,8 @@ out the configuration than the in kernel cfe config reader.
 +
 --- a/arch/mips/bcm47xx/nvram.c
 +++ b/arch/mips/bcm47xx/nvram.c
-@@ -23,6 +23,8 @@
- #include <asm/mach-bcm47xx/bus.h>
+@@ -25,6 +25,8 @@
+ #include <linux/mtd/bcm47xx_nand.h>
  
  static char nvram_buf[NVRAM_SPACE];
 +static int cfe_env;
@@ -254,7 +254,7 @@ out the configuration than the in kernel cfe config reader.
  
  /* Probe for NVRAM header */
  static void early_nvram_init_pflash(void)
-@@ -59,6 +61,25 @@ static void early_nvram_init_pflash(void
+@@ -61,6 +63,25 @@ static void early_nvram_init_pflash(void
  		break;
  #endif
  	}
@@ -280,7 +280,7 @@ out the configuration than the in kernel cfe config reader.
  
  	off = FLASH_MIN;
  	while (off <= lim) {
-@@ -181,6 +202,12 @@ int nvram_getenv(char *name, char *val,
+@@ -232,6 +253,12 @@ int nvram_getenv(char *name, char *val,
  	if (!nvram_buf[0])
  		early_nvram_init();
  
@@ -293,7 +293,7 @@ out the configuration than the in kernel cfe config reader.
  	/* Look for name=value and return value */
  	var = &nvram_buf[sizeof(struct nvram_header)];
  	end = nvram_buf + sizeof(nvram_buf) - 2;
-@@ -209,6 +236,9 @@ char *nvram_get(const char *name)
+@@ -260,6 +287,9 @@ char *nvram_get(const char *name)
  	if (!nvram_buf[0])
  		early_nvram_init();
  
diff --git a/target/linux/brcm47xx/patches-3.2/980-wnr834b_no_cardbus_invariant.patch b/target/linux/brcm47xx/patches-3.2/980-wnr834b_no_cardbus_invariant.patch
index da43422d6f..58dfd8afed 100644
--- a/target/linux/brcm47xx/patches-3.2/980-wnr834b_no_cardbus_invariant.patch
+++ b/target/linux/brcm47xx/patches-3.2/980-wnr834b_no_cardbus_invariant.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/bcm47xx/setup.c
 +++ b/arch/mips/bcm47xx/setup.c
-@@ -131,6 +131,10 @@ static int bcm47xx_get_invariants(struct
+@@ -133,6 +133,10 @@ static int bcm47xx_get_invariants(struct
  	if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
  		iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
  
diff --git a/target/linux/brcm47xx/patches-3.2/999-wl_exports.patch b/target/linux/brcm47xx/patches-3.2/999-wl_exports.patch
index 5f8e8d3508..550f4c9683 100644
--- a/target/linux/brcm47xx/patches-3.2/999-wl_exports.patch
+++ b/target/linux/brcm47xx/patches-3.2/999-wl_exports.patch
@@ -1,8 +1,8 @@
 --- a/arch/mips/bcm47xx/nvram.c
 +++ b/arch/mips/bcm47xx/nvram.c
-@@ -22,7 +22,8 @@
- #include <asm/mach-bcm47xx/bcm47xx.h>
+@@ -24,7 +24,8 @@
  #include <asm/mach-bcm47xx/bus.h>
+ #include <linux/mtd/bcm47xx_nand.h>
  
 -static char nvram_buf[NVRAM_SPACE];
 +char nvram_buf[NVRAM_SPACE];