diff options
Diffstat (limited to 'target/linux/danube/files/drivers/mtd/maps/danube.c')
| -rw-r--r-- | target/linux/danube/files/drivers/mtd/maps/danube.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/target/linux/danube/files/drivers/mtd/maps/danube.c b/target/linux/danube/files/drivers/mtd/maps/danube.c deleted file mode 100644 index 25e9df3de..000000000 --- a/target/linux/danube/files/drivers/mtd/maps/danube.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Driver for DANUBE flashmap - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE - * Copyright (C) 2007 John Crispin <blogic@openwrt.org> - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <asm/io.h> - -#include <linux/init.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> -#include <linux/mtd/cfi.h> -#include <asm/danube/danube.h> -#include <linux/magic.h> - -static struct map_info -danube_map = { - .name = "DANUBE_FLASH", - .bankwidth = 2, - .size = 0x400000, -}; - -static map_word -danube_read16 (struct map_info * map, unsigned long adr) -{ - map_word temp; - - adr ^= 2; - temp.x[0] = *((__u16 *) (map->virt + adr)); - - return temp; -} - -static void -danube_write16 (struct map_info *map, map_word d, unsigned long adr) -{ - adr ^= 2; - *((__u16 *) (map->virt + adr)) = d.x[0]; -} - -void -danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - u8 *p; - u8 *to_8; - - from = (unsigned long) (from + map->virt); - p = (u8 *) from; - to_8 = (u8 *) to; - while(len--){ - *to_8++ = *p++; - } -} - -void -danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len) -{ - u8 *p = (u8*) from; - u8 *to_8; - - to += (unsigned long) map->virt; - to_8 = (u8*)to; - while(len--){ - *p++ = *to_8++; - } -} - -static struct mtd_partition -danube_partitions[4] = { - { - name:"U-Boot", - offset:0x00000000, - size:0x00020000, - }, - { - name:"U-Boot-Env", - offset:0x00020000, - size:0x00010000, - }, - { - name:"kernel", - offset:0x00030000, - size:0x0, - }, - { - name:"rootfs", - offset:0x0, - size:0x0, - }, -}; - -#define DANUBE_FLASH_START 0x10000000 -#define DANUBE_FLASH_MAX 0x2000000 - -int -find_uImage_size (unsigned long start_offset){ - unsigned long temp; - - danube_copy_from(&danube_map, &temp, start_offset + 12, 4); - printk("kernel size is %ld \n", temp + 0x40); - return temp + 0x40; -} - -int -detect_squashfs_partition (unsigned long start_offset){ - unsigned long temp; - - danube_copy_from(&danube_map, &temp, start_offset, 4); - - return (temp == SQUASHFS_MAGIC); -} - -int __init -init_danube_mtd (void) -{ - struct mtd_info *danube_mtd = NULL; - struct mtd_partition *parts = NULL; - unsigned long uimage_size; - - writel(0x1d7ff, DANUBE_EBU_BUSCON0); - - danube_map.read = danube_read16; - danube_map.write = danube_write16; - danube_map.copy_from = danube_copy_from; - danube_map.copy_to = danube_copy_to; - - danube_map.phys = DANUBE_FLASH_START; - danube_map.virt = ioremap_nocache(DANUBE_FLASH_START, DANUBE_FLASH_MAX); - danube_map.size = DANUBE_FLASH_MAX; - if (!danube_map.virt) { - printk(KERN_WARNING "Failed to ioremap!\n"); - return -EIO; - } - - danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map); - if (!danube_mtd) { - iounmap(danube_map.virt); - printk("probing failed\n"); - return -ENXIO; - } - - danube_mtd->owner = THIS_MODULE; - - uimage_size = find_uImage_size(danube_partitions[2].offset); - - if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){ - printk("Found a squashfs following the uImage\n"); - } else { - uimage_size &= ~0xffff; - uimage_size += 0x10000; - } - - danube_partitions[2].size = uimage_size; - danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size; - danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset; - - parts = &danube_partitions[0]; - add_mtd_partitions(danube_mtd, parts, 4); - - printk("Added danube flash with %dMB\n", danube_mtd->size >> 20); - return 0; -} - -static void -__exit -cleanup_danube_mtd (void) -{ -} - -module_init (init_danube_mtd); -module_exit (cleanup_danube_mtd); - -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>"); -MODULE_DESCRIPTION ("MTD map driver for DANUBE boards"); |