116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*
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* $Id$
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* Copyright (C) 2005 Gemtek Corporation, Dante Su (dante_su@gemtek.com.tw)
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* Copyright (C) 2006 Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <asm/io.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/vmalloc.h>
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#define WINDOW_ADDR 0xFFC00000
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#define WINDOW_SIZE 0x00400000
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#define BUSWIDTH 2
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extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin);
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static struct mtd_partition *parsed_parts;
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static struct mtd_info *rdc3210_mtd_info;
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static struct map_info rdc3210_map = {
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.name = "rdc3210",
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.size = WINDOW_SIZE,
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.bankwidth = BUSWIDTH,
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.phys = WINDOW_ADDR,
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};
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static struct mtd_partition rdc3210_parts[] = {
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{ name: "linux", offset: 0, size: 0x003C0000 }, /* 3840 KB = (Kernel + ROMFS) = (768 KB + 3072 KB) */
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{ name: "romfs", offset: 0x000C0000, size: 0x00300000 }, /* 3072 KB */
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{ name: "nvram", offset: 0x003C0000, size: 0x00010000 }, /* 64 KB */
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{ name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */
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{ name: "bootldr", offset: 0x003E0000, size: 0x00020000, mask_flags: MTD_WRITEABLE },/* 128 KB */
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};
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static int __init rdc3210_mtd_init(void)
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{
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printk(KERN_INFO "rdc3210: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR);
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rdc3210_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
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if (!rdc3210_map.virt) {
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printk(KERN_ERR "rdc3210: failed to ioremap\n");
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return -EIO;
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}
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simple_map_init(&rdc3210_map);
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rdc3210_mtd_info = do_map_probe("cfi_probe", &rdc3210_map);
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if (rdc3210_mtd_info)
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{
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rdc3210_mtd_info->owner = THIS_MODULE;
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int parsed_nr_parts = 0;
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char * part_type;
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#ifdef CONFIG_MTD_REDBOOT_PARTS
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if (parsed_nr_parts == 0)
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{
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int ret = parse_redboot_partitions(rdc3210_mtd_info, &parsed_parts, 0);
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if (ret > 0)
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{
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part_type = "RedBoot";
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parsed_nr_parts = ret;
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} else {
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printk(KERN_ERR "rdc3210: failed to parse RedBoot partitions, using static mapping\n");
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add_mtd_partitions(rdc3210_mtd_info, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0]));
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return -ENXIO;
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}
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}
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add_mtd_partitions(rdc3210_mtd_info, parsed_parts, parsed_nr_parts);
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return 0;
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}
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#endif
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iounmap(rdc3210_map.virt);
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return -ENXIO;
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}
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static void __exit rdc3210_mtd_cleanup(void)
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{
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if (rdc3210_mtd_info)
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{
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del_mtd_partitions(rdc3210_mtd_info);
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map_destroy(rdc3210_mtd_info);
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}
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if (rdc3210_map.virt) {
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iounmap(rdc3210_map.virt);
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rdc3210_map.virt = 0;
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}
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}
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module_init(rdc3210_mtd_init);
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module_exit(rdc3210_mtd_cleanup);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("RDC3210 flash map driver");
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MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
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