/*
- * Copyright © 2009 Christian Daniel <cd@maintech.de>
+ * 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
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
-#include <linux/bootmem.h>
-#include <linux/magic.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
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));
+
static struct mtd_partition trx_parts[TRX_PARTS];
-static int create_mtd_partitions(struct mtd_info *master,
- struct mtd_partition **pparts,
- unsigned long origin)
+#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,
+ unsigned long origin)
{
- uint8_t buf[512];
- int len;
- struct trx_header *header;
+ struct wrt160nl_header *header;
+ struct trx_header *theader;
struct uimage_header *uheader;
+ size_t retlen;
unsigned int kernel_len;
+ unsigned int uboot_len = max(master->erasesize, WRT160NL_UBOOT_LEN);
+ unsigned int nvram_len = max(master->erasesize, WRT160NL_NVRAM_LEN);
+ unsigned int art_len = max(master->erasesize, WRT160NL_ART_LEN);
+ int ret;
+
+ header = vmalloc(sizeof(*header));
+ if (!header) {
+ return -ENOMEM;
+ goto out;
+ }
+
+ ret = master->read(master, uboot_len, sizeof(*header),
+ &retlen, (void *) header);
+ if (ret)
+ goto free_hdr;
- master->read(master, 4 * master->erasesize, sizeof(buf), &len, buf);
- if (strncmp(buf, "NL16", 4) == 0) {
- printk(KERN_INFO "TRX on WRT160NL detected\n");
-
- header = (struct trx_header *)(buf + 32);
- if (le32_to_cpu(header->magic) != TRX_MAGIC) {
- printk(KERN_WARNING "TRX messed up\n");
- return 0;
- }
-
- uheader = (struct uimage_header *)(buf + 60);
- if (uheader->ih_magic != IH_MAGIC) {
- printk(KERN_WARNING "uImage messed up\n");
- return 0;
- }
-
- kernel_len = uheader->ih_size / master->erasesize;
- if (uheader->ih_size % master->erasesize)
- kernel_len++;
-
- kernel_len++;
- kernel_len *= master->erasesize;
-
- trx_parts[0].name = "u-boot";
- trx_parts[0].offset = 0;
- trx_parts[0].size = 4 * master->erasesize;
- 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 - 6 * master->erasesize - trx_parts[1].size;
- trx_parts[2].mask_flags = 0;
-
- trx_parts[3].name = "nvram";
- trx_parts[3].offset = master->size - 2 * master->erasesize;
- trx_parts[3].size = master->erasesize;
- trx_parts[3].mask_flags = MTD_WRITEABLE;
-
- trx_parts[4].name = "art";
- trx_parts[4].offset = master->size - master->erasesize;
- trx_parts[4].size = master->erasesize;
- trx_parts[4].mask_flags = MTD_WRITEABLE;
-
- trx_parts[5].name = "firmware";
- trx_parts[5].offset = 4 * master->erasesize;
- trx_parts[5].size = master->size - 6 * master->erasesize;
- trx_parts[5].mask_flags = 0;
-
- *pparts = trx_parts;
-
- return TRX_PARTS;
- } else {
- return 0;
+ 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;
+
+ *pparts = trx_parts;
+ ret = TRX_PARTS;
+
+free_hdr:
+ vfree(header);
+out:
+ return ret;
}
-static struct mtd_part_parser trx_parser = {
+static struct mtd_part_parser wrt160nl_parser = {
.owner = THIS_MODULE,
- .parse_fn = create_mtd_partitions,
+ .parse_fn = wrt160nl_parse_partitions,
.name = "wrt160nl",
};
-static int __init trx_parser_init(void)
+static int __init wrt160nl_parser_init(void)
{
- return register_mtd_parser(&trx_parser);
+ return register_mtd_parser(&wrt160nl_parser);
}
-module_init(trx_parser_init);
+module_init(wrt160nl_parser_init);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Daniel <cd@maintech.de>");
projects / openwrt.git / blobdiff