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-rw-r--r--target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c574
-rw-r--r--target/linux/adm5120/files/drivers/mtd/myloader.c178
-rw-r--r--target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c207
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");
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 13:00:58 +0000