+++ /dev/null
-/*
- * Copyright (C) 2009 Christian Daniel <cd@maintech.de>
- * Copyright (C) 2009 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 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * TRX flash partition table.
- * Based on ar7 map by Felix Fietkau <nbd@openwrt.org>
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-struct cybertan_header {
- char magic[4];
- u8 res1[4];
- char fw_date[3];
- char fw_ver[3];
- char id[4];
- char hw_ver;
- char unused;
- u8 flags[2];
- u8 res2[10];
-};
-
-#define TRX_PARTS 6
-#define TRX_MAGIC 0x30524448
-#define TRX_MAX_OFFSET 3
-
-struct trx_header {
- uint32_t magic; /* "HDR0" */
- uint32_t len; /* Length of file including header */
- uint32_t crc32; /* 32-bit CRC from flag_version to end of file */
- uint32_t flag_version; /* 0:15 flags, 16:31 version */
- uint32_t offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
-};
-
-#define IH_MAGIC 0x27051956 /* Image Magic Number */
-#define IH_NMLEN 32 /* Image Name Length */
-
-struct uimage_header {
- uint32_t ih_magic; /* Image Header Magic Number */
- uint32_t ih_hcrc; /* Image Header CRC Checksum */
- uint32_t ih_time; /* Image Creation Timestamp */
- uint32_t ih_size; /* Image Data Size */
- uint32_t ih_load; /* Data» Load Address */
- uint32_t ih_ep; /* Entry Point Address */
- uint32_t ih_dcrc; /* Image Data CRC Checksum */
- uint8_t ih_os; /* Operating System */
- uint8_t ih_arch; /* CPU architecture */
- uint8_t ih_type; /* Image Type */
- uint8_t ih_comp; /* Compression Type */
- uint8_t ih_name[IH_NMLEN]; /* Image Name */
-};
-
-struct wrt160nl_header {
- struct cybertan_header cybertan;
- struct trx_header trx;
- struct uimage_header uimage;
-} __attribute__ ((packed));
-
-#define WRT160NL_UBOOT_LEN 0x40000
-#define WRT160NL_ART_LEN 0x10000
-#define WRT160NL_NVRAM_LEN 0x10000
-
-static int wrt160nl_parse_partitions(struct mtd_info *master,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-{
- struct wrt160nl_header *header;
- struct trx_header *theader;
- struct uimage_header *uheader;
- struct mtd_partition *trx_parts;
- size_t retlen;
- unsigned int kernel_len;
- unsigned int uboot_len;
- unsigned int nvram_len;
- unsigned int art_len;
- int ret;
-
- uboot_len = max_t(unsigned int, master->erasesize, WRT160NL_UBOOT_LEN);
- nvram_len = max_t(unsigned int, master->erasesize, WRT160NL_NVRAM_LEN);
- art_len = max_t(unsigned int, master->erasesize, WRT160NL_ART_LEN);
-
- trx_parts = kzalloc(TRX_PARTS * sizeof(struct mtd_partition),
- GFP_KERNEL);
- if (!trx_parts) {
- ret = -ENOMEM;
- goto out;
- }
-
- header = vmalloc(sizeof(*header));
- if (!header) {
- return -ENOMEM;
- goto free_parts;
- }
-
- ret = mtd_read(master, uboot_len, sizeof(*header),
- &retlen, (void *) header);
- if (ret)
- goto free_hdr;
-
- if (retlen != sizeof(*header)) {
- ret = -EIO;
- goto free_hdr;
- }
-
- if (strncmp(header->cybertan.magic, "NL16", 4) != 0) {
- printk(KERN_NOTICE "%s: no WRT160NL signature found\n",
- master->name);
- goto free_hdr;
- }
-
- theader = &header->trx;
- if (le32_to_cpu(theader->magic) != TRX_MAGIC) {
- printk(KERN_NOTICE "%s: no TRX header found\n", master->name);
- goto free_hdr;
- }
-
- uheader = &header->uimage;
- if (uheader->ih_magic != IH_MAGIC) {
- printk(KERN_NOTICE "%s: no uImage found\n", master->name);
- goto free_hdr;
- }
-
- kernel_len = le32_to_cpu(theader->offsets[1]) +
- sizeof(struct cybertan_header);
-
- trx_parts[0].name = "u-boot";
- trx_parts[0].offset = 0;
- trx_parts[0].size = uboot_len;
- trx_parts[0].mask_flags = MTD_WRITEABLE;
-
- trx_parts[1].name = "kernel";
- trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size;
- trx_parts[1].size = kernel_len;
- trx_parts[1].mask_flags = 0;
-
- trx_parts[2].name = "rootfs";
- trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size;
- trx_parts[2].size = master->size - uboot_len - nvram_len - art_len -
- trx_parts[1].size;
- trx_parts[2].mask_flags = 0;
-
- trx_parts[3].name = "nvram";
- trx_parts[3].offset = master->size - nvram_len - art_len;
- trx_parts[3].size = nvram_len;
- trx_parts[3].mask_flags = MTD_WRITEABLE;
-
- trx_parts[4].name = "art";
- trx_parts[4].offset = master->size - art_len;
- trx_parts[4].size = art_len;
- trx_parts[4].mask_flags = MTD_WRITEABLE;
-
- trx_parts[5].name = "firmware";
- trx_parts[5].offset = uboot_len;
- trx_parts[5].size = master->size - uboot_len - nvram_len - art_len;
- trx_parts[5].mask_flags = 0;
-
- vfree(header);
-
- *pparts = trx_parts;
- return TRX_PARTS;
-
-free_hdr:
- vfree(header);
-free_parts:
- kfree(trx_parts);
-out:
- return ret;
-}
-
-static struct mtd_part_parser wrt160nl_parser = {
- .owner = THIS_MODULE,
- .parse_fn = wrt160nl_parse_partitions,
- .name = "wrt160nl",
-};
-
-static int __init wrt160nl_parser_init(void)
-{
- register_mtd_parser(&wrt160nl_parser);
-
- return 0;
-}
-
-module_init(wrt160nl_parser_init);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Christian Daniel <cd@maintech.de>");
projects / openwrt.git / blobdiff