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/*******************************************************************
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* Simple Flash mapping for RDC3210 * |
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* * |
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* 2005.03.23 * |
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* Dante Su (dante_su@gemtek.com.tw) * |
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* Copyright (C) 2005 Gemtek Corporation * |
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*******************************************************************/ |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/kernel.h> |
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/*
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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/mtd/mtd.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/config.h> |
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#ifndef RDC3210_STATIC_MAP |
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#define RDC3210_STATIC_MAP 0 |
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#endif |
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#ifndef RDC3210_FACTORY_DFLT |
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#define RDC3210_FACTORY_DFLT 0 |
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#endif |
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#ifndef RDC3210_USING_JFFS2 |
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#define RDC3210_USING_JFFS2 1 |
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#endif |
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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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/* Dante: linked from linux-2.4.x/drivers/mtd/chips/flashdrv.c */ |
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extern int flashdrv_get_size(void); |
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extern int flashdrv_get_sector(int addr); |
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extern int flashdrv_get_sector_addr(int sector); |
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extern int flashdrv_get_sector_size(int sector); |
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static struct mtd_info *rdc3210_mtd; |
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__u8 rdc3210_map_read8(struct map_info *map, unsigned long ofs) |
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{ |
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return *(__u8 *)(map->map_priv_1 + ofs); |
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} |
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__u16 rdc3210_map_read16(struct map_info *map, unsigned long ofs) |
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{ |
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return *(__u16 *)(map->map_priv_1 + ofs); |
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} |
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__u32 rdc3210_map_read32(struct map_info *map, unsigned long ofs) |
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{ |
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return *(__u32 *)(map->map_priv_1 + ofs); |
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} |
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void rdc3210_map_write8(struct map_info *map, __u8 d, unsigned long adr) |
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{ |
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*(__u8 *)(map->map_priv_1 + adr) = d; |
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} |
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void rdc3210_map_write16(struct map_info *map, __u16 d, unsigned long adr) |
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{ |
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*(__u16 *)(map->map_priv_1 + adr) = d; |
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} |
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void rdc3210_map_write32(struct map_info *map, __u32 d, unsigned long adr) |
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{ |
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*(__u32 *)(map->map_priv_1 + adr) = d; |
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} |
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void rdc3210_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) |
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{ |
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int i; |
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u16 *dst = (u16 *)(to); |
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u16 *src = (u16 *)(map->map_priv_1 + from); |
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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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for(i = 0; i < (len / 2); ++i) |
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dst[i] = src[i]; |
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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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if(len & 1) |
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{ |
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printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n"); |
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//dst[len - 1] = B0(src[i]);
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} |
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} |
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void rdc3210_map_copy_to(struct map_info *map, void *to, unsigned long from, ssize_t len) |
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{ |
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int i; |
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u16 *dst = (u16 *)(map->map_priv_1 + to); |
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u16 *src = (u16 *)(from); |
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for(i = 0; i < (len / 2); ++i) |
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dst[i] = src[i]; |
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if(len & 1) |
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{ |
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printk("# WARNNING!!! rdc3210_map_copy_from has odd length\n"); |
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//dst[len - 1] = B0(src[i]);
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} |
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} |
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struct map_info rdc3210_map =
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{ |
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name: "RDC3210 Flash", |
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size: WINDOW_SIZE, |
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buswidth: BUSWIDTH, |
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read8: rdc3210_map_read8, |
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read16: rdc3210_map_read16, |
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read32: rdc3210_map_read32, |
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copy_from: rdc3210_map_copy_from, |
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write8: rdc3210_map_write8, |
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write16: rdc3210_map_write16, |
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write32: rdc3210_map_write32, |
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copy_to: rdc3210_map_copy_to, |
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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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/* Dante: This is the default static mapping, however this is nothing but a hint. (Say dynamic mapping) */ |
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static struct mtd_partition rdc3210_parts[] =
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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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#if RDC3210_STATIC_MAP || RDC3210_FACTORY_DFLT |
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{ name: "factory", offset: 0x003D0000, size: 0x00010000 }, /* 64 KB */ |
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#endif |
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{ name: "bootldr", offset: 0x003E0000, size: 0x00020000 }, /* 128 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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#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE) |
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#define init_rdc3210_map init_module |
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#define cleanup_rdc3210_map cleanup_module |
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#endif |
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mod_init_t init_rdc3210_map(void) |
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static int __init rdc3210_mtd_init(void) |
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{ |
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printk(KERN_NOTICE "flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR); |
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rdc3210_map.map_priv_1 = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
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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.map_priv_1)
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{ |
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printk("Failed to ioremap\n"); |
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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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rdc3210_mtd = do_map_probe("cfi_probe", &rdc3210_map); |
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#if RDC3210_STATIC_MAP /* Dante: This is for fixed map */ |
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if (rdc3210_mtd)
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{ |
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rdc3210_mtd->module = THIS_MODULE; |
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add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0])); |
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return 0; |
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} |
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#else /* Dante: This is for dynamic mapping */ |
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#include <gemtek/sysdep.h> |
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#include <gemtek/imghdr.h> |
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simple_map_init(&rdc3210_map); |
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if (rdc3210_mtd)
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{ // Dante
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#if RDC3210_USING_JFFS2 |
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unsigned int tmp, tmp2 = rdc3210_mtd->erasesize; |
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#else |
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unsigned int tmp, tmp2 = 32; |
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#endif |
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gt_imghdr_t *hdr; |
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rdc3210_mtd_info = do_map_probe("cfi_probe", &rdc3210_map); |
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hdr = (gt_imghdr_t *)(rdc3210_map.map_priv_1); |
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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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if(memcmp(hdr->magic, GTIMG_MAGIC, 4)) |
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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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printk("Invalid MAGIC for Firmware Image!!!\n"); |
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return -EIO; |
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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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#if RDC3210_FACTORY_DFLT |
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/* 1. Adjust Redboot */ |
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tmp = flashdrv_get_size() - rdc3210_parts[4].size; |
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rdc3210_parts[4].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp)); |
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rdc3210_parts[4].size = flashdrv_get_size() - rdc3210_parts[4].offset; |
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/* 2. Adjust NVRAM */ |
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tmp -= rdc3210_parts[3].size; |
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rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp)); |
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rdc3210_parts[3].size = rdc3210_parts[4].offset - rdc3210_parts[3].offset; |
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/* 3. Adjust Factory Default */ |
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tmp -= rdc3210_parts[2].size; |
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rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp)); |
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rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset; |
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/* 4. Adjust Linux (Kernel + ROMFS) */ |
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rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset; |
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/* 5. Adjust ROMFS */ |
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tmp = hdr->kernelsz + sizeof(gt_imghdr_t); |
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rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2); |
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rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset; |
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#else |
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/* 1. Adjust Redboot */ |
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tmp = flashdrv_get_size() - rdc3210_parts[3].size; |
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rdc3210_parts[3].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp)); |
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rdc3210_parts[3].size = flashdrv_get_size() - rdc3210_parts[3].offset; |
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/* 2. Adjust NVRAM */ |
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tmp -= rdc3210_parts[2].size; |
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rdc3210_parts[2].offset = flashdrv_get_sector_addr(flashdrv_get_sector(tmp)); |
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rdc3210_parts[2].size = rdc3210_parts[3].offset - rdc3210_parts[2].offset; |
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/* 4. Adjust Linux (Kernel + ROMFS) */ |
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rdc3210_parts[0].size = rdc3210_parts[2].offset - rdc3210_parts[0].offset; |
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/* 5. Adjust ROMFS */ |
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tmp = hdr->kernelsz + sizeof(gt_imghdr_t); |
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rdc3210_parts[1].offset = rdc3210_parts[0].offset + (((tmp / tmp2) + ((tmp % tmp2) ? 1 : 0)) * tmp2); |
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rdc3210_parts[1].size = rdc3210_parts[2].offset - rdc3210_parts[1].offset; |
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#endif |
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rdc3210_mtd->module = THIS_MODULE; |
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add_mtd_partitions(rdc3210_mtd, rdc3210_parts, sizeof(rdc3210_parts)/sizeof(rdc3210_parts[0])); |
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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((void *)rdc3210_map.map_priv_1); |
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iounmap(rdc3210_map.virt); |
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return -ENXIO; |
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} |
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mod_exit_t cleanup_rdc3210_map(void) |
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static void __exit rdc3210_mtd_cleanup(void) |
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{ |
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if (rdc3210_mtd)
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if (rdc3210_mtd_info) |
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{ |
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del_mtd_partitions(rdc3210_mtd); |
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map_destroy(rdc3210_mtd); |
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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.map_priv_1)
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{ |
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iounmap((void *)rdc3210_map.map_priv_1); |
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rdc3210_map.map_priv_1 = NULL; |
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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(init_rdc3210_map); |
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module_exit(cleanup_rdc3210_map); |
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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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