strip the kernel version suffix from target directories, except for brcm-2.4 (the -2.4 will be included in the board name here). CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 959 insertions, 0 deletions

diff --git a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
new file mode 100644
index 000000000..0a2590e60
--- /dev/null
+++ b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
@@ -0,0 +1,574 @@
+/*
+ *  $Id$
+ *
+ *  Platform driver for NOR flash devices on ADM5120 based boards
+ *
+ *  Copyright (C) 2007 OpenWrt.org
+ *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ *
+ *  This file was derived from: drivers/mtd/map/physmap.c
+ *	Copyright (C) 2003 MontaVista Software Inc.
+ *	Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ *
+ *  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., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+#include <asm/mach-adm5120/adm5120_defs.h>
+#include <asm/mach-adm5120/adm5120_switch.h>
+#include <asm/mach-adm5120/adm5120_mpmc.h>
+#include <asm/mach-adm5120/adm5120_platform.h>
+
+#define DRV_NAME	"adm5120-flash"
+#define DRV_DESC	"ADM5120 flash MAP driver"
+#define MAX_PARSED_PARTS 8
+
+#ifdef ADM5120_FLASH_DEBUG
+#define MAP_DBG(m, f, a...)	printk(KERN_INFO "%s: " f, (m->name) , ## a)
+#else
+#define MAP_DBG(m, f, a...)	do {} while (0)
+#endif
+#define MAP_ERR(m, f, a...)	printk(KERN_ERR "%s: " f, (m->name) , ## a)
+#define MAP_INFO(m, f, a...)	printk(KERN_INFO "%s: " f, (m->name) , ## a)
+
+struct adm5120_map_info {
+	struct map_info	map;
+	void 		(*switch_bank)(unsigned);
+	unsigned long	window_size;
+};
+
+struct adm5120_flash_info {
+	struct mtd_info		*mtd;
+	struct resource		*res;
+	struct platform_device	*dev;
+	struct adm5120_map_info	amap;
+#ifdef CONFIG_MTD_PARTITIONS
+	int			nr_parts;
+	struct mtd_partition	*parts[MAX_PARSED_PARTS];
+#endif
+};
+
+struct flash_desc {
+	u32	phys;
+	u32	srs_shift;
+	u32	mpmc_reg;
+};
+
+/*
+ * Globals
+ */
+static DEFINE_SPINLOCK(adm5120_flash_spin);
+#define FLASH_LOCK()	spin_lock(&adm5120_flash_spin)
+#define FLASH_UNLOCK()	spin_unlock(&adm5120_flash_spin)
+
+static u32 flash_bankwidths[4] = { 1, 2, 4, 0 };
+
+static u32 flash_sizes[8] = {
+	0, 512*1024, 1024*1024, 2*1024*1024,
+	4*1024*1024, 0, 0, 0
+};
+
+static struct flash_desc flash_descs[2] = {
+	{
+		.phys		= ADM5120_SRAM0_BASE,
+		.mpmc_reg	= MPMC_REG_SC1,
+		.srs_shift	= MEMCTRL_SRS0_SHIFT,
+	}, {
+		.phys		= ADM5120_SRAM1_BASE,
+		.mpmc_reg	= MPMC_REG_SC0,
+		.srs_shift	= MEMCTRL_SRS1_SHIFT,
+	}
+};
+
+static const char *probe_types[] = {
+	"cfi_probe",
+	"jedec_probe",
+	"map_rom",
+	NULL
+};
+
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *parse_types[] = {
+	"cmdlinepart",
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+	"RedBoot",
+#endif
+#ifdef CONFIG_MTD_MYLOADER_PARTS
+	"MyLoader",
+#endif
+};
+#endif
+
+#define BANK_SIZE	(2<<20)
+#define BANK_SIZE_MAX	(4<<20)
+#define BANK_OFFS_MASK	(BANK_SIZE-1)
+#define BANK_START_MASK	(~BANK_OFFS_MASK)
+
+static inline struct adm5120_map_info *map_to_amap(struct map_info *map)
+{
+	return (struct adm5120_map_info *)map;
+}
+
+static void adm5120_flash_switchbank(struct map_info *map,
+		unsigned long ofs)
+{
+	struct adm5120_map_info *amap = map_to_amap(map);
+	unsigned bank;
+
+	if (amap->switch_bank == NULL)
+		return;
+
+	bank = (ofs & BANK_START_MASK) >> 21;
+	if (bank > 1)
+		BUG();
+
+	MAP_DBG(map, "switching to bank %u, ofs=%lX\n", bank, ofs);
+	amap->switch_bank(bank);
+}
+
+static map_word adm5120_flash_read(struct map_info *map, unsigned long ofs)
+{
+	struct adm5120_map_info *amap = map_to_amap(map);
+	map_word ret;
+
+	MAP_DBG(map, "reading from ofs %lX\n", ofs);
+
+	if (ofs >= amap->window_size)
+		return map_word_ff(map);
+
+	FLASH_LOCK();
+	adm5120_flash_switchbank(map, ofs);
+	ret = inline_map_read(map, (ofs & (amap->window_size-1)));
+	FLASH_UNLOCK();
+
+	return ret;
+}
+
+static void adm5120_flash_write(struct map_info *map, const map_word datum,
+		unsigned long ofs)
+{
+	struct adm5120_map_info *amap = map_to_amap(map);
+
+	MAP_DBG(map,"writing to ofs %lX\n", ofs);
+
+	if (ofs > amap->window_size)
+		return;
+
+	FLASH_LOCK();
+	adm5120_flash_switchbank(map, ofs);
+	inline_map_write(map, datum, (ofs & (amap->window_size-1)));
+	FLASH_UNLOCK();
+}
+
+static void adm5120_flash_copy_from(struct map_info *map, void *to,
+		unsigned long from, ssize_t len)
+{
+	struct adm5120_map_info *amap = map_to_amap(map);
+	char *p;
+	ssize_t t;
+
+	MAP_DBG(map, "copy_from, to=%lX, from=%lX, len=%lX\n",
+		(unsigned long)to, from, (unsigned long)len);
+
+	if (from > amap->window_size)
+		return;
+
+	p = (char *)to;
+	while (len > 0) {
+		t = len;
+		if ((from < BANK_SIZE) && ((from+len) > BANK_SIZE))
+			t = BANK_SIZE-from;
+
+		FLASH_LOCK();
+		MAP_DBG(map, "copying %lu byte(s) from %lX to %lX\n",
+			(unsigned long)t, (from & (amap->window_size-1)),
+			(unsigned long)p);
+		adm5120_flash_switchbank(map, from);
+		inline_map_copy_from(map, p, (from & (amap->window_size-1)), t);
+		FLASH_UNLOCK();
+		p += t;
+		from += t;
+		len -= t;
+	}
+}
+
+static int adm5120_flash_initres(struct adm5120_flash_info *info)
+{
+	struct map_info *map = &info->amap.map;
+	int err = 0;
+
+	info->res = request_mem_region(map->phys, map->size, map->name);
+	if (info->res == NULL) {
+		MAP_ERR(map, "could not reserve memory region\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	map->virt = ioremap_nocache(map->phys, map->size);
+	if (map->virt == NULL) {
+		MAP_ERR(map, "failed to ioremap flash region\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+out:
+	return err;
+}
+
+#define SWITCH_READ(r) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))
+#define SWITCH_WRITE(r,v) *(u32 *)(KSEG1ADDR(ADM5120_SWITCH_BASE)+(r))=(v)
+#define MPMC_READ(r) *(u32 *)(KSEG1ADDR(ADM5120_MPMC_BASE)+(r))
+#define MPMC_WRITE(r,v) *(u32 *)(KSEG1ADDR(ADM5120_MPMC_BASE)+(r))=(v)
+
+static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
+		struct platform_device *dev)
+{
+	struct map_info *map = &info->amap.map;
+	struct adm5120_flash_platform_data *pdata = dev->dev.platform_data;
+	struct flash_desc *fdesc;
+	u32 t;
+
+	map->name = dev->dev.bus_id;
+
+	if (dev->id > 1) {
+		MAP_ERR(map, "invalid flash id\n");
+		goto err_out;
+	}
+
+	fdesc = &flash_descs[dev->id];
+
+	/* get memory window size */
+	t = SWITCH_READ(SWITCH_REG_MEMCTRL) >> fdesc->srs_shift;
+	t &= MEMCTRL_SRS_MASK;
+	info->amap.window_size = flash_sizes[t];
+	if (info->amap.window_size == 0) {
+		MAP_ERR(map, "invalid flash size detected\n");
+		goto err_out;
+	}
+
+	/* get flash bus width */
+	t = MPMC_READ(fdesc->mpmc_reg) & SC_MW_MASK;
+	map->bankwidth = flash_bankwidths[t];
+	if (map->bankwidth == 0) {
+		MAP_ERR(map, "invalid bus width detected\n");
+		goto err_out;
+	}
+
+	map->phys = fdesc->phys;
+	map->size = BANK_SIZE_MAX;
+
+	simple_map_init(map);
+	map->read = adm5120_flash_read;
+	map->write = adm5120_flash_write;
+	map->copy_from = adm5120_flash_copy_from;
+
+	if (pdata) {
+		map->set_vpp = pdata->set_vpp;
+		info->amap.switch_bank = pdata->switch_bank;
+	}
+
+	info->dev = dev;
+
+	MAP_INFO(map, "probing at 0x%lX, size:%ldKiB, width:%d bits\n",
+		(unsigned long)map->phys,
+		(unsigned long)info->amap.window_size >> 10,
+		map->bankwidth*8);
+
+	return 0;
+
+err_out:
+	return -ENODEV;
+}
+
+static void adm5120_flash_initbanks(struct adm5120_flash_info *info)
+{
+	struct map_info *map = &info->amap.map;
+
+	if (info->mtd->size <= BANK_SIZE)
+		/* no bank switching needed */
+		return;
+
+	if (info->amap.switch_bank) {
+		info->amap.window_size = info->mtd->size;
+		return;
+	}
+
+	MAP_ERR(map, "reduce visibility from %ldKiB to %ldKiB\n",
+		(unsigned long)map->size >> 10,
+		(unsigned long)info->mtd->size >> 10);
+
+	info->mtd->size = info->amap.window_size;
+}
+
+#ifdef CONFIG_MTD_PARTITIONS
+static int adm5120_flash_initparts(struct adm5120_flash_info *info)
+{
+	struct adm5120_flash_platform_data *pdata = info->dev->dev.platform_data;
+	struct map_info *map = &info->amap.map;
+	int num_parsers;
+	const char *parser[2];
+	int err = 0;
+	int nr_parts;
+	int i;
+
+	info->nr_parts = 0;
+
+	if (pdata == NULL)
+		goto out;
+
+	if (pdata->nr_parts) {
+		MAP_INFO(map, "adding static partitions\n");
+		err = add_mtd_partitions(info->mtd, pdata->parts,
+			pdata->nr_parts);
+		if (err == 0) {
+			info->nr_parts += pdata->nr_parts;
+			goto out;
+		}
+	}
+
+	num_parsers = ARRAY_SIZE(parse_types);
+	if (num_parsers > MAX_PARSED_PARTS)
+		num_parsers = MAX_PARSED_PARTS;
+
+	parser[1] = NULL;
+	for (i=0; i<num_parsers; i++) {
+		parser[0] = parse_types[i];
+
+		MAP_INFO(map, "parsing \"%s\" partitions\n",
+			parser[0]);
+		nr_parts = parse_mtd_partitions(info->mtd, parser,
+			&info->parts[i], 0);
+
+		if (nr_parts <= 0)
+			continue;
+
+		MAP_INFO(map, "adding \"%s\" partitions\n",
+			parser[0]);
+
+		err = add_mtd_partitions(info->mtd, info->parts[i], nr_parts);
+		if (err)
+			break;
+
+		info->nr_parts += nr_parts;
+	}
+out:
+	return err;
+}
+#else
+static int adm5120_flash_initparts(struct adm5120_flash_info *info)
+{
+	return 0;
+}
+#endif /* CONFIG_MTD_PARTITIONS */
+
+#ifdef CONFIG_MTD_PARTITIONS
+static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
+{
+	int i;
+
+	if (info->nr_parts) {
+		del_mtd_partitions(info->mtd);
+		for (i=0; i<MAX_PARSED_PARTS; i++)
+			if (info->parts[i] != NULL)
+				kfree(info->parts[i]);
+	} else {
+		del_mtd_device(info->mtd);
+	}
+}
+#else
+static void adm5120_flash_remove_mtd(struct adm5120_flash_info *info)
+{
+	del_mtd_device(info->mtd);
+}
+#endif
+
+static int adm5120_flash_remove(struct platform_device *dev)
+{
+	struct adm5120_flash_info *info;
+
+	info = platform_get_drvdata(dev);
+	if (info == NULL)
+		return 0;
+
+	platform_set_drvdata(dev, NULL);
+
+	if (info->mtd != NULL) {
+		adm5120_flash_remove_mtd(info);
+		map_destroy(info->mtd);
+	}
+
+	if (info->amap.map.virt != NULL)
+		iounmap(info->amap.map.virt);
+
+	if (info->res != NULL) {
+		release_resource(info->res);
+		kfree(info->res);
+	}
+
+	return 0;
+}
+
+static int adm5120_flash_probe(struct platform_device *dev)
+{
+	struct adm5120_flash_info *info;
+	struct map_info *map;
+	const char **probe_type;
+	int err;
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (info == NULL) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+
+	platform_set_drvdata(dev, info);
+
+	err = adm5120_flash_initinfo(info, dev);
+	if (err)
+		goto err_out;
+
+	err = adm5120_flash_initres(info);
+	if (err)
+		goto err_out;
+
+	map = &info->amap.map;
+	for (probe_type = probe_types; info->mtd == NULL && *probe_type != NULL;
+		probe_type++)
+		info->mtd = do_map_probe(*probe_type, map);
+
+	if (info->mtd == NULL) {
+		MAP_ERR(map, "map_probe failed\n");
+		err = -ENXIO;
+		goto err_out;
+	}
+
+	adm5120_flash_initbanks(info);
+
+	if (info->mtd->size < info->amap.window_size) {
+		/* readjust resources */
+		iounmap(map->virt);
+		release_resource(info->res);
+		kfree(info->res);
+
+		info->amap.window_size = info->mtd->size;
+		map->size = info->mtd->size;
+		MAP_INFO(map, "reducing map size to %ldKiB\n",
+			(unsigned long)map->size >> 10);
+		err = adm5120_flash_initres(info);
+		if (err)
+			goto err_out;
+	}
+
+	MAP_INFO(map, "found at 0x%lX, size:%ldKiB, width:%d bits\n",
+		(unsigned long)map->phys, (unsigned long)info->mtd->size >> 10,
+		map->bankwidth*8);
+
+	info->mtd->owner = THIS_MODULE;
+
+	err = adm5120_flash_initparts(info);
+	if (err)
+		goto err_out;
+
+	if (info->nr_parts == 0) {
+		MAP_INFO(map, "no partitions available, registering whole flash\n");
+		add_mtd_device(info->mtd);
+	}
+
+	return 0;
+
+err_out:
+	adm5120_flash_remove(dev);
+	return err;
+}
+
+#ifdef CONFIG_PM
+static int adm5120_flash_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct adm5120_flash_info *info = platform_get_drvdata(dev);
+	int ret = 0;
+
+	if (info)
+		ret = info->mtd->suspend(info->mtd);
+
+	return ret;
+}
+
+static int adm5120_flash_resume(struct platform_device *dev)
+{
+	struct adm5120_flash_info *info = platform_get_drvdata(dev);
+
+	if (info)
+		info->mtd->resume(info->mtd);
+
+	return 0;
+}
+
+static void adm5120_flash_shutdown(struct platform_device *dev)
+{
+	struct adm5120_flash_info *info = platform_get_drvdata(dev);
+
+	if (info && info->mtd->suspend(info->mtd) == 0)
+		info->mtd->resume(info->mtd);
+}
+#endif
+
+static struct platform_driver adm5120_flash_driver = {
+	.probe		= adm5120_flash_probe,
+	.remove		= adm5120_flash_remove,
+#ifdef CONFIG_PM
+	.suspend	= adm5120_flash_suspend,
+	.resume		= adm5120_flash_resume,
+	.shutdown	= adm5120_flash_shutdown,
+#endif
+	.driver		= {
+		.name	= DRV_NAME,
+	},
+};
+
+static int __init adm5120_flash_init(void)
+{
+	int err;
+
+	err = platform_driver_register(&adm5120_flash_driver);
+
+	return err;
+}
+
+static void __exit adm5120_flash_exit(void)
+{
+	platform_driver_unregister(&adm5120_flash_driver);
+}
+
+module_init(adm5120_flash_init);
+module_exit(adm5120_flash_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
+MODULE_DESCRIPTION(DRV_DESC);
diff --git a/target/linux/adm5120/files/drivers/mtd/myloader.c b/target/linux/adm5120/files/drivers/mtd/myloader.c
new file mode 100644
index 000000000..ad207e555
--- /dev/null
+++ b/target/linux/adm5120/files/drivers/mtd/myloader.c
@@ -0,0 +1,178 @@
+/*
+ *  $Id$
+ *
+ *  Parse MyLoader-style flash partition tables and produce a Linux partition
+ *  array to match.
+ *
+ *  Copyright (C) 2007 OpenWrt.org
+ *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ *
+ *  This file was based on drivers/mtd/redboot.c
+ *  Author: Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.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 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., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <linux/byteorder/generic.h>
+
+#include <prom/myloader.h>
+
+#define NAME_LEN_MAX		20
+#define NAME_MYLOADER		"MyLoader"
+#define NAME_PARTITION_TABLE	"Partition Table"
+#define BLOCK_LEN_MIN		0x10000
+
+int parse_myloader_partitions(struct mtd_info *master,
+			struct mtd_partition **pparts,
+			unsigned long origin)
+{
+	struct mylo_partition_table *tab;
+	struct mylo_partition *part;
+	struct mtd_partition *mtd_parts;
+	struct mtd_partition *mtd_part;
+	int num_parts;
+	int ret, i;
+	size_t retlen;
+	size_t parts_len;
+	char *names;
+	unsigned long offset;
+	unsigned long blocklen;
+
+	tab = vmalloc(sizeof(*tab));
+	if (!tab) {
+		return -ENOMEM;
+		goto out;
+	}
+
+	blocklen = master->erasesize;
+	if (blocklen < BLOCK_LEN_MIN)
+		blocklen = BLOCK_LEN_MIN;
+
+	/* Partition Table is always located on the second erase block */
+	offset = blocklen;
+	printk(KERN_NOTICE "%s: searching for MyLoader partition table at "
+			"offset 0x%lx\n", master->name, offset);
+
+	ret = master->read(master, offset, sizeof(*tab), &retlen, (void *)tab);
+	if (ret)
+		goto out;
+
+	if (retlen != sizeof(*tab)) {
+		ret = -EIO;
+		goto out_free_buf;
+	}
+
+	/* Check for Partition Table magic number */
+	if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) {
+		printk(KERN_NOTICE "%s: no MyLoader partition table found\n",
+			master->name);
+		ret = 0;
+		goto out_free_buf;
+	}
+
+	/* The MyLoader and the Partition Table is always present */
+	num_parts = 2;
+
+	/* Detect number of used partitions */
+	for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
+		part = &tab->partitions[i];
+
+		if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
+			continue;
+
+		num_parts++;
+	}
+
+	mtd_parts = kzalloc((num_parts*sizeof(*mtd_part) + num_parts*NAME_LEN_MAX),
+			 GFP_KERNEL);
+
+	if (!mtd_parts) {
+		ret = -ENOMEM;
+		goto out_free_buf;
+	}
+
+	mtd_part = mtd_parts;
+	names = (char *)&mtd_parts[num_parts];
+
+	strncpy(names, NAME_MYLOADER, NAME_LEN_MAX-1);
+	mtd_part->name = names;
+	mtd_part->offset = 0;
+	mtd_part->size = blocklen;
+	mtd_part->mask_flags = MTD_WRITEABLE;
+	mtd_part++;
+	names += NAME_LEN_MAX;
+
+	strncpy(names, NAME_PARTITION_TABLE, NAME_LEN_MAX-1);
+	mtd_part->name = names;
+	mtd_part->offset = blocklen;
+	mtd_part->size = blocklen;
+	mtd_part->mask_flags = MTD_WRITEABLE;
+	mtd_part++;
+	names += NAME_LEN_MAX;
+
+	for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
+		part = &tab->partitions[i];
+
+		if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
+			continue;
+
+		sprintf(names, "partition%d", i);
+		mtd_part->offset = le32_to_cpu(part->addr);
+		mtd_part->size = le32_to_cpu(part->size);
+		mtd_part->name = names;
+		mtd_part++;
+		names += NAME_LEN_MAX;
+	}
+
+	*pparts = mtd_parts;
+	ret = num_parts;
+
+out_free_buf:
+	vfree(tab);
+out:
+	return ret;
+}
+
+static struct mtd_part_parser mylo_mtd_parser = {
+	.owner = THIS_MODULE,
+	.parse_fn = parse_myloader_partitions,
+	.name = NAME_MYLOADER,
+};
+
+static int __init mylo_mtd_parser_init(void)
+{
+	return register_mtd_parser(&mylo_mtd_parser);
+}
+
+static void __exit mylo_mtd_parser_exit(void)
+{
+	deregister_mtd_parser(&mylo_mtd_parser);
+}
+
+module_init(mylo_mtd_parser_init);
+module_exit(mylo_mtd_parser_exit);
+
+MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
+MODULE_DESCRIPTION("Parsing code for MyLoader partition tables");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c b/target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c
new file mode 100644
index 000000000..2e7059d18
--- /dev/null
+++ b/target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c
@@ -0,0 +1,207 @@
+/*==============================================================================*/
+/* rbmipsnand.c                                                                 */
+/* This module is derived from the 2.4 driver shipped by Microtik for their     */
+/* Routerboard 1xx and 5xx series boards.  It provides support for the built in */
+/* NAND flash on the Routerboard 1xx series boards for Linux 2.6.19+.           */
+/* Licence: Original Microtik code seems not to have a licence.                 */
+/*          Rewritten code all GPL V2.                                          */
+/* Copyright(C) 2007 david.goodenough@linkchoose.co.uk (for rewriten code)      */
+/*==============================================================================*/
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/bootinfo.h>
+#include <asm/mach-adm5120/adm5120_info.h>
+#include <asm/mach-adm5120/adm5120_defs.h>
+
+#define SMEM1(x) (*((volatile unsigned char *) (KSEG1ADDR(ADM5120_SRAM1_BASE) + x)))
+
+#define NAND_RW_REG	0x0	//data register
+#define NAND_SET_CEn	0x1	//CE# low
+#define NAND_CLR_CEn	0x2	//CE# high
+#define NAND_CLR_CLE	0x3	//CLE low
+#define NAND_SET_CLE	0x4	//CLE high
+#define NAND_CLR_ALE	0x5	//ALE low
+#define NAND_SET_ALE	0x6	//ALE high
+#define NAND_SET_SPn	0x7	//SP# low (use spare area)
+#define NAND_CLR_SPn	0x8	//SP# high (do not use spare area)
+#define NAND_SET_WPn	0x9	//WP# low
+#define NAND_CLR_WPn	0xA	//WP# high
+#define NAND_STS_REG	0xB	//Status register
+
+#define MEM32(x) *((volatile unsigned *) (x))
+
+static struct mtd_partition partition_info[] = {
+    {
+        name: "RouterBoard NAND Boot",
+        offset: 0,
+        size: 4 * 1024 * 1024
+    },
+    {
+        name: "rootfs",
+        offset: MTDPART_OFS_NXTBLK,
+        size: MTDPART_SIZ_FULL
+    }
+};
+
+static struct nand_ecclayout rb_ecclayout = {
+        .eccbytes = 6,
+        .eccpos = { 8, 9, 10, 13, 14, 15 },
+        .oobavail = 9,
+        .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1} }
+};
+
+struct adm5120_nand_info {
+	struct nand_chip chip;
+	struct mtd_info mtd;
+	void __iomem *io_base;
+#ifdef CONFIG_MTD_PARTITIONS
+	int	nr_parts;
+	struct mtd_partition *parts;
+#endif
+	unsigned int	init_ok;
+};
+
+static int rb100_dev_ready(struct mtd_info *mtd)
+{
+	return SMEM1(NAND_STS_REG) & 0x80;
+}
+
+static void rbmips_hwcontrol100(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+    	struct nand_chip *chip = mtd->priv;
+	if (ctrl & NAND_CTRL_CHANGE)
+	{
+        	SMEM1((( ctrl & NAND_CLE) ? NAND_SET_CLE : NAND_CLR_CLE)) = 0x01;
+        	SMEM1((( ctrl & NAND_ALE) ? NAND_SET_ALE : NAND_CLR_ALE)) = 0x01;
+        	SMEM1((( ctrl & NAND_NCE) ? NAND_SET_CEn : NAND_CLR_CEn)) = 0x01;
+        }
+    	if (cmd != NAND_CMD_NONE)
+        	writeb( cmd, chip->IO_ADDR_W);
+}
+
+/*========================================================================*/
+/* We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader */
+/* will not be able to find the kernel that we load.  So set the oobinfo  */
+/* when creating the partitions.                                          */ 
+/*========================================================================*/
+
+
+unsigned get_rbnand_block_size(struct adm5120_nand_info *data)
+{
+	return data->init_ok ? data->mtd.writesize : 0;
+}
+
+EXPORT_SYMBOL(get_rbnand_block_size);
+
+static int rbmips_probe(struct platform_device *pdev)
+{
+	struct adm5120_nand_info *data;
+	int res = 0;
+
+	/* Allocate memory for the nand_chip structure */
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		dev_err(&pdev->dev, "Failed to allocate device structure\n");
+		return -ENOMEM;
+
+	}
+	
+	data->io_base = ioremap(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start + 1);
+
+	if (data->io_base == NULL) {
+		dev_err(&pdev->dev, "ioremap failed\n");
+		kfree(data);
+		return -EIO;
+	}
+
+	MEM32(0xB2000064) = 0x100;
+	MEM32(0xB2000008) = 0x1;
+	SMEM1(NAND_SET_SPn) = 0x01;
+	SMEM1(NAND_CLR_WPn) = 0x01;
+
+	data->chip.priv = &data;
+	data->mtd.priv = &data->chip;
+	data->mtd.owner = THIS_MODULE;
+
+	data->init_ok = 0;
+	data->chip.IO_ADDR_R = (unsigned char *)KSEG1ADDR(ADM5120_SRAM1_BASE);
+	data->chip.IO_ADDR_W = data->chip.IO_ADDR_R;
+	data->chip.cmd_ctrl = rbmips_hwcontrol100;
+	data->chip.dev_ready = rb100_dev_ready;
+	data->chip.ecc.mode = NAND_ECC_SOFT;
+	data->chip.ecc.layout = &rb_ecclayout;
+	data->chip.chip_delay = 25;
+	data->chip.options |= NAND_NO_AUTOINCR;
+
+	platform_set_drvdata(pdev, data);
+
+	/* Why do we need to scan 4 times ? */
+	if (nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1)  && nand_scan(&data->mtd, 1)) {
+		printk(KERN_INFO "RB1xxx nand device not found\n");
+		res = -ENXIO;
+		goto out;
+	}
+
+	add_mtd_partitions(&data->mtd, partition_info, 2);
+	data->init_ok = 1;
+
+	res = add_mtd_device(&data->mtd);
+	if (!res)
+		return res;
+
+	nand_release(&data->mtd);
+out:
+	platform_set_drvdata(pdev, NULL);
+	iounmap(data->io_base);
+	kfree(data);
+	return res;
+}
+
+static int __devexit rbmips_remove(struct platform_device *pdev)
+{
+	struct adm5120_nand_info *data = platform_get_drvdata(pdev);
+	
+	nand_release(&data->mtd);
+	iounmap(data->io_base);
+	kfree(data);
+	
+	return 0;
+}
+
+static struct platform_driver adm5120_nand_driver = {
+	.probe 		= rbmips_probe,
+	.remove 	= rbmips_remove,
+	.driver 	= {
+		.name	= "adm5120-nand",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init adm5120_nand_init(void)
+{
+	int err;
+	err = platform_driver_register(&adm5120_nand_driver);
+	return err;
+}
+
+static void __exit adm5120_nand_exit(void)
+{
+	platform_driver_unregister(&adm5120_nand_driver);
+}
+
+module_init(adm5120_nand_init);
+module_exit(adm5120_nand_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Goodenough, Florian Fainelli");
+MODULE_DESCRIPTION("RouterBOARD 100 NAND driver");
+