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domenico
2025-06-24 16:03:39 +02:00
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163
target/linux/ath79/files/drivers/mtd/parsers/parser_cybertan.c Normal file
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/*
* 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@nbd.name>
*
*/
#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>
#include <linux/version.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];
} __packed;
#define TRX_PARTS 3
#define TRX_MAGIC 0x30524448
#define TRX_MAX_OFFSET 3
struct trx_header {
__le32 magic; /* "HDR0" */
__le32 len; /* Length of file including header */
__le32 crc32; /* 32-bit CRC from flag_version to end of file */
__le32 flag_version; /* 0:15 flags, 16:31 version */
__le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
} __packed;
#define IH_MAGIC 0x27051956 /* Image Magic Number */
#define IH_NMLEN 32 /* Image Name Length */
struct uimage_header {
__be32 ih_magic; /* Image Header Magic Number */
__be32 ih_hcrc; /* Image Header CRC Checksum */
__be32 ih_time; /* Image Creation Timestamp */
__be32 ih_size; /* Image Data Size */
__be32 ih_load; /* Data» Load Address */
__be32 ih_ep; /* Entry Point Address */
__be32 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 */
} __packed;
struct firmware_header {
struct cybertan_header cybertan;
struct trx_header trx;
struct uimage_header uimage;
} __packed;
static int cybertan_parse_partitions(struct mtd_info *master,
const struct mtd_partition **pparts,
struct mtd_part_parser_data *data)
{
struct firmware_header header;
struct trx_header *theader;
struct uimage_header *uheader;
struct mtd_partition *trx_parts;
size_t retlen;
unsigned int kernel_len;
int ret;
trx_parts = kcalloc(TRX_PARTS, sizeof(struct mtd_partition),
GFP_KERNEL);
if (!trx_parts) {
ret = -ENOMEM;
goto out;
}
ret = mtd_read(master, 0, sizeof(header),
&retlen, (uint8_t *)&header);
if (ret)
goto free_parts;
if (retlen != sizeof(header)) {
ret = -EIO;
goto free_parts;
}
theader = &header.trx;
if (theader->magic != cpu_to_le32(TRX_MAGIC)) {
printk(KERN_NOTICE "%s: no TRX header found\n", master->name);
goto free_parts;
}
uheader = &header.uimage;
if (uheader->ih_magic != cpu_to_be32(IH_MAGIC)) {
printk(KERN_NOTICE "%s: no uImage found\n", master->name);
goto free_parts;
}
kernel_len = le32_to_cpu(theader->offsets[1]) +
sizeof(struct cybertan_header);
trx_parts[0].name = "header";
trx_parts[0].offset = 0;
trx_parts[0].size = offsetof(struct firmware_header, uimage);
trx_parts[0].mask_flags = 0;
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[0].size;
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 - trx_parts[1].size - trx_parts[0].size;
trx_parts[2].mask_flags = 0;
*pparts = trx_parts;
return TRX_PARTS;
free_parts:
kfree(trx_parts);
out:
return ret;
}
static const struct of_device_id mtd_parser_cybertan_of_match_table[] = {
{ .compatible = "cybertan,trx" },
{},
};
MODULE_DEVICE_TABLE(of, mtd_parser_cybertan_of_match_table);
static struct mtd_part_parser mtd_parser_cybertan = {
.parse_fn = cybertan_parse_partitions,
.name = "cybertan-trx",
.of_match_table = mtd_parser_cybertan_of_match_table,
};
module_mtd_part_parser(mtd_parser_cybertan);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Daniel <cd@maintech.de>");

235
target/linux/ath79/files/drivers/mtd/tplinkpart.c Normal file
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/*
* 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>
#include <linux/version.h>
#define TPLINK_NUM_PARTS 5
#define TPLINK_HEADER_V1 0x01000000
#define TPLINK_HEADER_V2 0x02000000
#define MD5SUM_LEN 16
#define TPLINK_ART_LEN 0x10000
#define TPLINK_KERNEL_OFFS 0x20000
#define TPLINK_64K_KERNEL_OFFS 0x10000
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) && (t != TPLINK_HEADER_V2))
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_offset(struct mtd_info *master,
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
struct mtd_partition **pparts,
#else
const struct mtd_partition **pparts,
#endif
struct mtd_part_parser_data *data,
size_t offset)
{
struct mtd_partition *parts;
struct tplink_fw_header *header;
int nr_parts;
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;
}
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 int tplink_parse_partitions(struct mtd_info *master,
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
struct mtd_partition **pparts,
#else
const struct mtd_partition **pparts,
#endif
struct mtd_part_parser_data *data)
{
return tplink_parse_partitions_offset(master, pparts, data,
TPLINK_KERNEL_OFFS);
}
static int tplink_parse_64k_partitions(struct mtd_info *master,
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
struct mtd_partition **pparts,
#else
const struct mtd_partition **pparts,
#endif
struct mtd_part_parser_data *data)
{
return tplink_parse_partitions_offset(master, pparts, data,
TPLINK_64K_KERNEL_OFFS);
}
static struct mtd_part_parser tplink_parser = {
.owner = THIS_MODULE,
.parse_fn = tplink_parse_partitions,
.name = "tp-link",
};
static struct mtd_part_parser tplink_64k_parser = {
.owner = THIS_MODULE,
.parse_fn = tplink_parse_64k_partitions,
.name = "tp-link-64k",
};
static int __init tplink_parser_init(void)
{
register_mtd_parser(&tplink_parser);
register_mtd_parser(&tplink_64k_parser);
return 0;
}
module_init(tplink_parser_init);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");