diff options
Diffstat (limited to 'target/linux/ar71xx/files/drivers/mtd/tplinkpart.c')
| -rw-r--r-- | target/linux/ar71xx/files/drivers/mtd/tplinkpart.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c b/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c deleted file mode 100644 index ab952b6..0000000 --- a/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/magic.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/partitions.h> - -#define TPLINK_NUM_PARTS 5 -#define TPLINK_HEADER_V1 0x01000000 -#define MD5SUM_LEN 16 - -#define TPLINK_ART_LEN 0x10000 -#define TPLINK_KERNEL_OFFS 0x20000 - -struct tplink_fw_header { - uint32_t version; /* header version */ - char vendor_name[24]; - char fw_version[36]; - uint32_t hw_id; /* hardware id */ - uint32_t hw_rev; /* hardware revision */ - uint32_t unk1; - uint8_t md5sum1[MD5SUM_LEN]; - uint32_t unk2; - uint8_t md5sum2[MD5SUM_LEN]; - uint32_t unk3; - uint32_t kernel_la; /* kernel load address */ - uint32_t kernel_ep; /* kernel entry point */ - uint32_t fw_length; /* total length of the firmware */ - uint32_t kernel_ofs; /* kernel data offset */ - uint32_t kernel_len; /* kernel data length */ - uint32_t rootfs_ofs; /* rootfs data offset */ - uint32_t rootfs_len; /* rootfs data length */ - uint32_t boot_ofs; /* bootloader data offset */ - uint32_t boot_len; /* bootloader data length */ - uint8_t pad[360]; -} __attribute__ ((packed)); - -static struct tplink_fw_header * -tplink_read_header(struct mtd_info *mtd, size_t offset) -{ - struct tplink_fw_header *header; - size_t header_len; - size_t retlen; - int ret; - u32 t; - - header = vmalloc(sizeof(*header)); - if (!header) - goto err; - - header_len = sizeof(struct tplink_fw_header); - ret = mtd_read(mtd, offset, header_len, &retlen, - (unsigned char *) header); - if (ret) - goto err_free_header; - - if (retlen != header_len) - goto err_free_header; - - /* sanity checks */ - t = be32_to_cpu(header->version); - if (t != TPLINK_HEADER_V1) - goto err_free_header; - - t = be32_to_cpu(header->kernel_ofs); - if (t != header_len) - goto err_free_header; - - return header; - -err_free_header: - vfree(header); -err: - return NULL; -} - -static int tplink_check_rootfs_magic(struct mtd_info *mtd, size_t offset) -{ - u32 magic; - size_t retlen; - int ret; - - ret = mtd_read(mtd, offset, sizeof(magic), &retlen, - (unsigned char *) &magic); - if (ret) - return ret; - - if (retlen != sizeof(magic)) - return -EIO; - - if (le32_to_cpu(magic) != SQUASHFS_MAGIC && - magic != 0x19852003) - return -EINVAL; - - return 0; -} - -static int tplink_parse_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - struct mtd_part_parser_data *data) -{ - struct mtd_partition *parts; - struct tplink_fw_header *header; - int nr_parts; - size_t offset; - size_t art_offset; - size_t rootfs_offset; - size_t squashfs_offset; - int ret; - - nr_parts = TPLINK_NUM_PARTS; - parts = kzalloc(nr_parts * sizeof(struct mtd_partition), GFP_KERNEL); - if (!parts) { - ret = -ENOMEM; - goto err; - } - - offset = TPLINK_KERNEL_OFFS; - - header = tplink_read_header(master, offset); - if (!header) { - pr_notice("%s: no TP-Link header found\n", master->name); - ret = -ENODEV; - goto err_free_parts; - } - - squashfs_offset = offset + sizeof(struct tplink_fw_header) + - be32_to_cpu(header->kernel_len); - - ret = tplink_check_rootfs_magic(master, squashfs_offset); - if (ret == 0) - rootfs_offset = squashfs_offset; - else - rootfs_offset = offset + be32_to_cpu(header->rootfs_ofs); - - art_offset = master->size - TPLINK_ART_LEN; - - parts[0].name = "u-boot"; - parts[0].offset = 0; - parts[0].size = offset; - parts[0].mask_flags = MTD_WRITEABLE; - - parts[1].name = "kernel"; - parts[1].offset = offset; - parts[1].size = rootfs_offset - offset; - - parts[2].name = "rootfs"; - parts[2].offset = rootfs_offset; - parts[2].size = art_offset - rootfs_offset; - - parts[3].name = "art"; - parts[3].offset = art_offset; - parts[3].size = TPLINK_ART_LEN; - parts[3].mask_flags = MTD_WRITEABLE; - - parts[4].name = "firmware"; - parts[4].offset = offset; - parts[4].size = art_offset - offset; - - vfree(header); - - *pparts = parts; - return nr_parts; - -err_free_parts: - kfree(parts); -err: - *pparts = NULL; - return ret; -} - -static struct mtd_part_parser tplink_parser = { - .owner = THIS_MODULE, - .parse_fn = tplink_parse_partitions, - .name = "tp-link", -}; - -static int __init tplink_parser_init(void) -{ - register_mtd_parser(&tplink_parser); - - return 0; -} - -module_init(tplink_parser_init); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); |