brcm47xx: add support for kernel 3.6

This is based on the patch by Peter Wagner.

SVN-Revision: 34252

1 files changed, 224 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.6/051-mtd-add-parallel-flash-driver.patch b/target/linux/brcm47xx/patches-3.6/051-mtd-add-parallel-flash-driver.patch
new file mode 100644
index 0000000..f28b696
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.6/051-mtd-add-parallel-flash-driver.patch
@@ -0,0 +1,224 @@
+--- a/drivers/mtd/maps/Kconfig
++++ b/drivers/mtd/maps/Kconfig
+@@ -249,6 +249,15 @@ config MTD_LANTIQ
+ 	help
+ 	  Support for NOR flash attached to the Lantiq SoC's External Bus Unit.
+ 
++config MTD_BCM47XX_PFLASH
++	tristate "bcm47xx parallel flash support"
++	default y
++	depends on BCM47XX
++	select MTD_PARTITIONS
++	select MTD_BCM47XX_PARTS
++	help
++	  Support for bcm47xx parallel flash
++
+ config MTD_DILNETPC
+ 	tristate "CFI Flash device mapped on DIL/Net PC"
+ 	depends on X86 && MTD_CFI_INTELEXT && BROKEN
+--- a/drivers/mtd/maps/Makefile
++++ b/drivers/mtd/maps/Makefile
+@@ -57,3 +57,4 @@ obj-$(CONFIG_MTD_VMU)		+= vmu-flash.o
+ obj-$(CONFIG_MTD_GPIO_ADDR)	+= gpio-addr-flash.o
+ obj-$(CONFIG_MTD_LATCH_ADDR)	+= latch-addr-flash.o
+ obj-$(CONFIG_MTD_LANTIQ)	+= lantiq-flash.o
++obj-$(CONFIG_MTD_BCM47XX_PFLASH)+= bcm47xx-pflash.o
+--- /dev/null
++++ b/drivers/mtd/maps/bcm47xx-pflash.c
+@@ -0,0 +1,196 @@
++/*
++ *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
++ *  Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
++ *  Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
++ *
++ *  original functions for finding root filesystem from Mike Baker
++ *
++ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
++ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
++ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
++ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
++ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
++ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
++ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
++ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
++ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
++ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ *  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.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ *  Copyright 2001-2003, 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.
++ *
++ *  Flash mapping for BCM947XX boards
++ */
++
++#define pr_fmt(fmt) "bcm47xx_pflash: " fmt
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/sched.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/map.h>
++#include <linux/mtd/partitions.h>
++#include <linux/io.h>
++#include <asm/mach-bcm47xx/bcm47xx.h>
++#include <linux/platform_device.h>
++
++#define WINDOW_ADDR 0x1fc00000
++#define WINDOW_SIZE 0x400000
++#define BUSWIDTH 2
++
++static struct mtd_info *bcm47xx_mtd;
++
++static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
++{
++	if (len == 1) {
++		memcpy_fromio(to, map->virt + from, len);
++	} else {
++		int i;
++		u16 *dest = (u16 *) to;
++		u16 *src  = (u16 *) (map->virt + from);
++		for (i = 0; i < (len / 2); i++)
++			dest[i] = src[i];
++		if (len & 1)
++			*((u8 *)dest+len-1) = src[i] & 0xff;
++	}
++}
++
++static struct map_info bcm47xx_map = {
++	name: "Physically mapped flash",
++	size : WINDOW_SIZE,
++	bankwidth : BUSWIDTH,
++	phys : WINDOW_ADDR,
++};
++
++static const char *probes[] = { "bcm47xx", NULL };
++
++static int bcm47xx_pflash_probe(struct platform_device *pdev)
++{
++#ifdef CONFIG_BCM47XX_SSB
++	struct ssb_mipscore *ssb_mcore;
++#endif
++#ifdef CONFIG_BCM47XX_BCMA
++	struct bcma_drv_cc *bcma_cc;
++#endif
++	int ret = 0;
++
++	switch (bcm47xx_bus_type) {
++#ifdef CONFIG_BCM47XX_SSB
++	case BCM47XX_BUS_TYPE_SSB:
++		ssb_mcore = &bcm47xx_bus.ssb.mipscore;
++		if (!ssb_mcore->pflash.present)
++			return -ENODEV;
++
++		bcm47xx_map.phys = ssb_mcore->pflash.window;
++		bcm47xx_map.size = ssb_mcore->pflash.window_size;
++		bcm47xx_map.bankwidth = ssb_mcore->pflash.buswidth;
++		break;
++#endif
++#ifdef CONFIG_BCM47XX_BCMA
++	case BCM47XX_BUS_TYPE_BCMA:
++		bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc;
++		if (!bcma_cc->pflash.present)
++			return -ENODEV;
++
++		bcm47xx_map.phys = bcma_cc->pflash.window;
++		bcm47xx_map.size = bcma_cc->pflash.window_size;
++		bcm47xx_map.bankwidth = bcma_cc->pflash.buswidth;
++		break;
++#endif
++	}
++
++	pr_notice("flash init: 0x%08x 0x%08lx\n", bcm47xx_map.phys, bcm47xx_map.size);
++	bcm47xx_map.virt = ioremap_nocache(bcm47xx_map.phys, bcm47xx_map.size);
++
++	if (!bcm47xx_map.virt) {
++		pr_err("Failed to ioremap\n");
++		return -EIO;
++	}
++
++	simple_map_init(&bcm47xx_map);
++	/* override copy_from routine */
++	bcm47xx_map.copy_from = bcm47xx_map_copy_from;
++
++	bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map);
++	if (!bcm47xx_mtd) {
++		pr_err("Failed to do_map_probe\n");
++		ret = -ENXIO;
++		goto err_unmap;
++	}
++	bcm47xx_mtd->owner = THIS_MODULE;
++
++	pr_notice("Flash device: 0x%lx at 0x%x\n", bcm47xx_map.size, WINDOW_ADDR);
++
++	ret = mtd_device_parse_register(bcm47xx_mtd, probes, NULL, NULL, 0);
++
++	if (ret) {
++		pr_err("Flash: mtd_device_register failed\n");
++		goto err_destroy;
++	}
++	return 0;
++
++err_destroy:
++	map_destroy(bcm47xx_mtd);
++err_unmap:
++	iounmap(bcm47xx_map.virt);
++	return ret;
++}
++
++static int __devexit bcm47xx_pflash_remove(struct platform_device *pdev)
++{
++	mtd_device_unregister(bcm47xx_mtd);
++	map_destroy(bcm47xx_mtd);
++	iounmap(bcm47xx_map.virt);
++	return 0;
++}
++
++static const struct platform_device_id bcm47xx_pflash_table[] = {
++	{ "bcm47xx-pflash", 0 },
++	{ }
++};
++MODULE_DEVICE_TABLE(platform, bcm47xx_pflash_table);
++
++static struct platform_driver bcm47xx_pflash_driver = {
++	.id_table	= bcm47xx_pflash_table,
++	.probe	= bcm47xx_pflash_probe,
++	.remove	= __devexit_p(bcm47xx_pflash_remove),
++	.driver	= {
++		.name = "bcm47xx-pflash",
++		.owner = THIS_MODULE,
++	},
++};
++
++static int __init init_bcm47xx_pflash(void)
++{
++	int ret = platform_driver_register(&bcm47xx_pflash_driver);
++
++	if (ret)
++		pr_err("error registering platform driver: %i\n", ret);
++	return ret;
++}
++
++static void __exit exit_bcm47xx_pflash(void)
++{
++	platform_driver_unregister(&bcm47xx_pflash_driver);
++}
++
++module_init(init_bcm47xx_pflash);
++module_exit(exit_bcm47xx_pflash);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("BCM47XX parallel flash driver");