diff options
author | blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-11-03 19:02:27 +0000 |
---|---|---|
committer | blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-11-03 19:02:27 +0000 |
commit | 0a2b2965cd687a2be744552b09f4f5cf2fde4c0f (patch) | |
tree | 9166127f79cbe0b37ab9b278968529b8ddfef738 /target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c | |
parent | f0efddfaa0c34142a6abbe8ae3de2181f608d710 (diff) |
[ifxmips]:
* bump kernel to 2.6.35.8
* merge arcadyn mach files
* fixes ar9
* adds hack for tapi drivers
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23836 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c')
-rw-r--r-- | target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c b/target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c deleted file mode 100644 index 376fd0b2f..000000000 --- a/target/linux/ifxmips/files-2.6.33/drivers/mtd/maps/ifxmips.c +++ /dev/null @@ -1,282 +0,0 @@ -/* - * 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) 2008 John Crispin <blogic@openwrt.org> - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/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 <linux/magic.h> -#include <linux/platform_device.h> - -#include <ifxmips.h> -#include <ifxmips_prom.h> -#include <ifxmips_ebu.h> - -#ifndef CONFIG_MTD_PARTITIONS -#error Please enable CONFIG_MTD_PARTITIONS -#endif - -static struct map_info ifxmips_map = { - .name = "ifx-nor", - .bankwidth = 2, - .size = 0x400000, -}; - -static map_word ifxmips_read16(struct map_info *map, unsigned long adr) -{ - unsigned long flags; - map_word temp; - spin_lock_irqsave(&ebu_lock, flags); - adr ^= 2; - temp.x[0] = *((__u16 *)(map->virt + adr)); - spin_unlock_irqrestore(&ebu_lock, flags); - return temp; -} - -static void ifxmips_write16(struct map_info *map, map_word d, unsigned long adr) -{ - unsigned long flags; - spin_lock_irqsave(&ebu_lock, flags); - adr ^= 2; - *((__u16 *)(map->virt + adr)) = d.x[0]; - spin_unlock_irqrestore(&ebu_lock, flags); -} - -void ifxmips_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - unsigned char *p; - unsigned char *to_8; - unsigned long flags; - spin_lock_irqsave(&ebu_lock, flags); - from = (unsigned long)(from + map->virt); - p = (unsigned char *) from; - to_8 = (unsigned char *) to; - while (len--) - *to_8++ = *p++; - spin_unlock_irqrestore(&ebu_lock, flags); -} - -void ifxmips_copy_to(struct map_info *map, - unsigned long to, - const void *from, - ssize_t len) -{ - unsigned char *p = (unsigned char *)from; - unsigned char *to_8; - unsigned long flags; - spin_lock_irqsave(&ebu_lock, flags); - to += (unsigned long) map->virt; - to_8 = (unsigned char *)to; - while (len--) - *p++ = *to_8++; - spin_unlock_irqrestore(&ebu_lock, flags); -} - -static struct mtd_partition ifxmips_partitions[] = { - { - .name = "uboot", - .offset = 0x00000000, - .size = 0x00020000, - }, - { - .name = "uboot_env", - .offset = 0x00020000, - .size = 0x0, - }, - { - .name = "kernel", - .offset = 0x0, - .size = 0x0, - }, - { - .name = "rootfs", - .offset = 0x0, - .size = 0x0, - }, - { - .name = "board_config", - .offset = 0x0, - .size = 0x0, - }, -}; - -static struct mtd_partition ifxmips_meta_partition = { - .name = "linux", - .offset = 0x00030000, - .size = 0x0, -}; - -static const char *part_probe_types[] = { "cmdlinepart", NULL }; - -int find_uImage_size(unsigned long start_offset) -{ - unsigned long magic; - unsigned long temp; - ifxmips_copy_from(&ifxmips_map, &magic, start_offset, 4); - if (le32_to_cpu(magic) != 0x56190527) { - printk(KERN_INFO "ifxmips_mtd: invalid magic (0x%08X) of kernel at 0x%08lx \n", le32_to_cpu(magic), start_offset); - return 0; - } - ifxmips_copy_from(&ifxmips_map, &temp, start_offset + 12, 4); - printk(KERN_INFO "ifxmips_mtd: kernel size is %ld \n", temp + 0x40); - return temp + 0x40; -} - -int find_brn_block(unsigned long start_offset) -{ - unsigned char temp[9]; - ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 8); - temp[8] = '\0'; - printk(KERN_INFO "data in brn block %s\n", temp); - if (memcmp(temp, "BRN-BOOT", 8) == 0) - return 1; - else - return 0; -} - -int detect_squashfs_partition(unsigned long start_offset) -{ - unsigned long temp; - ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 4); - return le32_to_cpu(temp) == SQUASHFS_MAGIC; -} - -static int ifxmips_mtd_probe(struct platform_device *dev) -{ - struct mtd_info *ifxmips_mtd = NULL; - struct mtd_partition *parts = NULL; - unsigned long uimage_size; - int err, i; - int kernel_part = 2, rootfs_part = 3; - int num_parts = ARRAY_SIZE(ifxmips_partitions); - - ifxmips_w32(0x1d7ff, IFXMIPS_EBU_BUSCON0); - - ifxmips_map.read = ifxmips_read16; - ifxmips_map.write = ifxmips_write16; - ifxmips_map.copy_from = ifxmips_copy_from; - ifxmips_map.copy_to = ifxmips_copy_to; - ifxmips_map.phys = dev->resource->start; - ifxmips_map.size = dev->resource->end - ifxmips_map.phys + 1; - ifxmips_map.virt = ioremap_nocache(ifxmips_map.phys, ifxmips_map.size); - - if (!ifxmips_map.virt) { - printk(KERN_WARNING "ifxmips_mtd: failed to ioremap!\n"); - return -EIO; - } - - ifxmips_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &ifxmips_map); - if (!ifxmips_mtd) { - iounmap(ifxmips_map.virt); - printk(KERN_WARNING "ifxmips_mtd: probing failed\n"); - return -ENXIO; - } - - ifxmips_mtd->owner = THIS_MODULE; - - err = parse_mtd_partitions(ifxmips_mtd, part_probe_types, &parts, 0); - if (err > 0) { - printk(KERN_INFO "ifxmips_mtd: found %d partitions from cmdline\n", err); - num_parts = err; - kernel_part = 0; - rootfs_part = 0; - for (i = 0; i < num_parts; i++) { - if (strcmp(parts[i].name, "kernel") == 0) - kernel_part = i; - if (strcmp(parts[i].name, "rootfs") == 0) - rootfs_part = i; - } - } else { - /* if the flash is 64k sectors, the kernel will reside at 0xb0030000 - if the flash is 128k sectors, the kernel will reside at 0xb0040000 */ - ifxmips_partitions[1].size = ifxmips_mtd->erasesize; - ifxmips_partitions[2].offset = ifxmips_partitions[1].offset + ifxmips_mtd->erasesize; - parts = &ifxmips_partitions[0]; - } - - /* dynamic size detection only if rootfs-part follows kernel-part */ - if (kernel_part+1 == rootfs_part) { - uimage_size = find_uImage_size(parts[kernel_part].offset); - - if (detect_squashfs_partition(parts[kernel_part].offset + uimage_size)) { - printk(KERN_INFO "ifxmips_mtd: found a squashfs following the uImage\n"); - } else { - uimage_size &= ~(ifxmips_mtd->erasesize -1); - uimage_size += ifxmips_mtd->erasesize; - } - - parts[kernel_part].size = uimage_size; - parts[rootfs_part].offset = parts[kernel_part].offset + parts[kernel_part].size; - parts[rootfs_part].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - parts[rootfs_part].offset; - - ifxmips_meta_partition.offset = parts[kernel_part].offset; - ifxmips_meta_partition.size = parts[kernel_part].size + parts[rootfs_part].size; - } - - if (err <= 0) { - if (ifxmips_has_brn_block()) { - parts[3].size -= ifxmips_mtd->erasesize; - parts[4].offset = ifxmips_mtd->size - ifxmips_mtd->erasesize; - parts[4].size = ifxmips_mtd->erasesize; - ifxmips_meta_partition.size -= ifxmips_mtd->erasesize; - } else { - num_parts--; - } - } - - add_mtd_partitions(ifxmips_mtd, parts, num_parts); - add_mtd_partitions(ifxmips_mtd, &ifxmips_meta_partition, 1); - - printk(KERN_INFO "ifxmips_mtd: added %s flash with %dMB\n", - ifxmips_map.name, ((int)ifxmips_mtd->size) >> 20); - return 0; -} - -static struct platform_driver ifxmips_mtd_driver = { - .probe = ifxmips_mtd_probe, - .driver = { - .name = "ifxmips_mtd", - .owner = THIS_MODULE, - }, -}; - -int __init init_ifxmips_mtd(void) -{ - int ret = platform_driver_register(&ifxmips_mtd_driver); - if (ret) - printk(KERN_INFO "ifxmips_mtd: error registering platfom driver!"); - return ret; -} - -static void __exit cleanup_ifxmips_mtd(void) -{ - platform_driver_unregister(&ifxmips_mtd_driver); -} - -module_init(init_ifxmips_mtd); -module_exit(cleanup_ifxmips_mtd); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); -MODULE_DESCRIPTION("MTD map driver for IFXMIPS boards"); |