-/*******************************************************************
- * Simple Flash mapping for RDC3210 *
- * *
- * 2005.03.23 *
- * Dante Su (dante_su@gemtek.com.tw) *
- * Copyright (C) 2005 Gemtek Corporation *
- *******************************************************************/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
+/*
+ * $Id$
+ * Copyright (C) 2005 Gemtek Corporation, Dante Su (dante_su@gemtek.com.tw)
+ * Copyright (C) 2006 Florian Fainelli <florian@openwrt.org>
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
#include <asm/io.h>
-#include <linux/mtd/mtd.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/mtd/map.h>
+#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
-#include <linux/config.h>
-
-#ifndef RDC3210_STATIC_MAP
-#define RDC3210_STATIC_MAP 0
-#endif
-#ifndef RDC3210_FACTORY_DFLT
-#define RDC3210_FACTORY_DFLT 0
-#endif
-#ifndef RDC3210_USING_JFFS2
-#define RDC3210_USING_JFFS2 1
-#endif
-
-#define WINDOW_ADDR 0xFFC00000
-#define WINDOW_SIZE 0x00400000
-
-#define BUSWIDTH 2
-
-/* Dante: linked from linux-2.4.x/drivers/mtd/chips/flashdrv.c */
-extern int flashdrv_get_size(void);
-extern int flashdrv_get_sector(int addr);
-extern int flashdrv_get_sector_addr(int sector);
-extern int flashdrv_get_sector_size(int sector);
-
-static struct mtd_info *rdc3210_mtd;
-
-__u8 rdc3210_map_read8(struct map_info *map, unsigned long ofs)
-{
- return *(__u8 *)(map->map_priv_1 + ofs);
-}
-
-__u16 rdc3210_map_read16(struct map_info *map, unsigned long ofs)
-{
- return *(__u16 *)(map->map_priv_1 + ofs);
-}
-
-__u32 rdc3210_map_read32(struct map_info *map, unsigned long ofs)
-{
- return *(__u32 *)(map->map_priv_1 + ofs);
-}
-
-void rdc3210_map_write8(struct map_info *map, __u8 d, unsigned long adr)
-{
- *(__u8 *)(map->map_priv_1 + adr) = d;
-}
-
-void rdc3210_map_write16(struct map_info *map, __u16 d, unsigned long adr)
-{
- *(__u16 *)(map->map_priv_1 + adr) = d;
-}
-
-void rdc3210_map_write32(struct map_info *map, __u32 d, unsigned long adr)
-{
- *(__u32 *)(map->map_priv_1 + adr) = d;
-}
+#include <linux/vmalloc.h>
-void rdc3210_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
- int i;
- u16 *dst = (u16 *)(to);
- u16 *src = (u16 *)(map->map_priv_1 + from);
+#define WINDOW_ADDR 0xFFC00000
+#define WINDOW_SIZE 0x00400000
+#define BUSWIDTH 2
- for(i = 0; i < (len / 2); ++i)
- dst[i] = src[i];
+extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
- if(len & 1)
- {
- printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n");
- //dst[len - 1] = B0(src[i]);
- }
-}
+static struct mtd_partition *parsed_parts;
+static struct mtd_info *rdc3210_mtd_info;
-void rdc3210_map_copy_to(struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
- int i;
- u16 *dst = (u16 *)(map->map_priv_1 + to);
- u16 *src = (u16 *)(from);
-
- for(i = 0; i < (len / 2); ++i)
- dst[i] = src[i];
-
- if(len & 1)
- {
- printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n");
- //dst[len - 1] = B0(src[i]);
- }
-}
-
-struct map_info rdc3210_map =
-{
- name: "RDC3210 Flash",
- size: WINDOW_SIZE,
- buswidth: BUSWIDTH,
- read8: rdc3210_map_read8,
- read16: rdc3210_map_read16,
- read32: rdc3210_map_read32,
- copy_from: rdc3210_map_copy_from,
- write8: rdc3210_map_write8,
- write16: rdc3210_map_write16,
- write32: rdc3210_map_write32,
- copy_to: rdc3210_map_copy_to,
+static struct map_info rdc3210_map = {
+ .name = "rdc3210",
+ .size = WINDOW_SIZE,
+ .bankwidth = BUSWIDTH,
+ .phys = WINDOW_ADDR,
};
-/* Dante: This is the default static mapping, however this is nothing but a hint. (Say dynamic mapping) */
-static struct mtd_partition rdc3210_parts[] =
-{
- { name: "linux", offset: 0, size: 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */
- { name: "romfs", offset: 0x000C0000, size: 0x00300000 }, /* 3072 KB */
- { name: "nvram", offset: 0x003C0000, size: 0x00010000 }, /* 64 KB */
-#if RDC3210_STATIC_MAP || RDC3210_FACTORY_DFLT
- { name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */
-#endif
- { name: "bootldr", offset: 0x003E0000, size: 0x00020000 }, /* 128 KB */
+static struct mtd_partition rdc3210_parts[] = {
+ { name: "linux", offset: 0, size: 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */
+ { name: "romfs", offset: 0x000C0000, size: 0x00300000 }, /* 3072 KB */
+ { name: "nvram", offset: 0x003C0000, size: 0x00010000 }, /* 64 KB */
+ { name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */
+ { name: "bootldr", offset: 0x003E0000, size: 0x00020000, mask_flags: MTD_WRITEABLE },/* 128 KB */
};
-#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
-#define init_rdc3210_map init_module
-#define cleanup_rdc3210_map cleanup_module
-#endif
-
-mod_init_t init_rdc3210_map(void)
+static int __init rdc3210_mtd_init(void)
{
- printk(KERN_NOTICE "flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
-
- rdc3210_map.map_priv_1 = ioremap(WINDOW_ADDR, WINDOW_SIZE);
+ printk(KERN_INFO "rdc3210: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
+ rdc3210_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
- if (!rdc3210_map.map_priv_1)
- {
- printk("Failed to ioremap\n");
+ if (!rdc3210_map.virt) {
+ printk(KERN_ERR "rdc3210: failed to ioremap\n");
return -EIO;
}
- rdc3210_mtd = do_map_probe("cfi_probe", &rdc3210_map);
-#if RDC3210_STATIC_MAP /* Dante: This is for fixed map */
- if (rdc3210_mtd)
- {
- rdc3210_mtd->module = THIS_MODULE;
- add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
- return 0;
- }
-#else /* Dante: This is for dynamic mapping */
-#include <gemtek/sysdep.h>
-#include <gemtek/imghdr.h>
+ simple_map_init(&rdc3210_map);
- if (rdc3210_mtd)
- { // Dante
-#if RDC3210_USING_JFFS2
- unsigned int tmp, tmp2 = rdc3210_mtd->erasesize;
-#else
- unsigned int tmp, tmp2 = 32;
-#endif
- gt_imghdr_t *hdr;
-
- hdr = (gt_imghdr_t *)(rdc3210_map.map_priv_1);
-
- if(memcmp(hdr->magic, GTIMG_MAGIC, 4))
+ rdc3210_mtd_info = do_map_probe("cfi_probe", &rdc3210_map);
+
+ if (rdc3210_mtd_info)
+ {
+ rdc3210_mtd_info->owner = THIS_MODULE;
+ int parsed_nr_parts = 0;
+ char * part_type;
+
+#ifdef CONFIG_MTD_REDBOOT_PARTS
+ if (parsed_nr_parts == 0)
{
- printk("Invalid MAGIC for Firmware Image!!!\n");
- return -EIO;
+ int ret = parse_redboot_partitions(rdc3210_mtd_info, &parsed_parts, 0);
+ if (ret > 0)
+ {
+ part_type = "RedBoot";
+ parsed_nr_parts = ret;
+ } else {
+ printk(KERN_ERR "rdc3210: failed to parse RedBoot partitions, using static mapping\n");
+ add_mtd_partitions(rdc3210_mtd_info, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ return -ENXIO;
+ }
}
-#if RDC3210_FACTORY_DFLT
- /* 1. Adjust Redboot */
- tmp = flashdrv_get_size() - rdc3210_parts[4].size;
- rdc3210_parts[4].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
- rdc3210_parts[4].size = flashdrv_get_size() - rdc3210_parts[4].offset;
-
- /* 2. Adjust NVRAM */
- tmp -= rdc3210_parts[3].size;
- rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
- rdc3210_parts[3].size = rdc3210_parts[4].offset - rdc3210_parts[3].offset;
-
- /* 3. Adjust Factory Default */
- tmp -= rdc3210_parts[2].size;
- rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
- rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset;
-
- /* 4. Adjust Linux (Kernel + ROMFS) */
- rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset;
-
- /* 5. Adjust ROMFS */
- tmp = hdr->kernelsz + sizeof(gt_imghdr_t);
- rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2);
- rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
-#else
- /* 1. Adjust Redboot */
- tmp = flashdrv_get_size() - rdc3210_parts[3].size;
- rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
- rdc3210_parts[3].size = flashdrv_get_size() - rdc3210_parts[3].offset;
-
- /* 2. Adjust NVRAM */
- tmp -= rdc3210_parts[2].size;
- rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp));
- rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset;
-
- /* 4. Adjust Linux (Kernel + ROMFS) */
- rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset;
-
- /* 5. Adjust ROMFS */
- tmp = hdr->kernelsz + sizeof(gt_imghdr_t);
- rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2);
- rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset;
-#endif
-
- rdc3210_mtd->module = THIS_MODULE;
- add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
+ add_mtd_partitions(rdc3210_mtd_info, parsed_parts, parsed_nr_parts);
return 0;
}
#endif
-
- iounmap((void *)rdc3210_map.map_priv_1);
+ iounmap(rdc3210_map.virt);
return -ENXIO;
}
-mod_exit_t cleanup_rdc3210_map(void)
+static void __exit rdc3210_mtd_cleanup(void)
{
- if (rdc3210_mtd)
+ if (rdc3210_mtd_info)
{
- del_mtd_partitions(rdc3210_mtd);
- map_destroy(rdc3210_mtd);
+ del_mtd_partitions(rdc3210_mtd_info);
+ map_destroy(rdc3210_mtd_info);
}
-
- if (rdc3210_map.map_priv_1)
- {
- iounmap((void *)rdc3210_map.map_priv_1);
- rdc3210_map.map_priv_1 = NULL;
+
+ if (rdc3210_map.virt) {
+ iounmap(rdc3210_map.virt);
+ rdc3210_map.virt = 0;
}
}
-module_init(init_rdc3210_map);
-module_exit(cleanup_rdc3210_map);
+module_init(rdc3210_mtd_init);
+module_exit(rdc3210_mtd_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("RDC3210 flash map driver");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
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