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ar71xx: add 64kb bootloader mtd parser for tplinkpart

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Signed-off-by: Weijie Gao <hackpascal@gmail.com>

This patch adds flash layout parser for TP-Link firmwares which have a 64kb
bootloader.

This is used for TP-Link TL-WDR6500 v2.

SVN-Revision: 46662
This commit is contained in:
John Crispin 2015-08-17 06:23:49 +00:00
parent cc3747e9e2
commit a2b38ebf77
1 changed files with 29 additions and 6 deletions
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35
target/linux/ar71xx/files/drivers/mtd/tplinkpart.c
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@ -18,10 +18,12 @@
#define TPLINK_NUM_PARTS 5 #define TPLINK_NUM_PARTS 5
#define TPLINK_HEADER_V1 0x01000000 #define TPLINK_HEADER_V1 0x01000000
#define TPLINK_HEADER_V2 0x02000000
#define MD5SUM_LEN 16 #define MD5SUM_LEN 16
#define TPLINK_ART_LEN 0x10000 #define TPLINK_ART_LEN 0x10000
#define TPLINK_KERNEL_OFFS 0x20000 #define TPLINK_KERNEL_OFFS 0x20000
#define TPLINK_64K_KERNEL_OFFS 0x10000
struct tplink_fw_header { struct tplink_fw_header {
uint32_t version; /* header version */ uint32_t version; /* header version */
@ -70,7 +72,7 @@ tplink_read_header(struct mtd_info *mtd, size_t offset)
/* sanity checks */ /* sanity checks */
t = be32_to_cpu(header->version); t = be32_to_cpu(header->version);
if (t != TPLINK_HEADER_V1) if ((t != TPLINK_HEADER_V1) && (t != TPLINK_HEADER_V2))
goto err_free_header; goto err_free_header;
t = be32_to_cpu(header->kernel_ofs); t = be32_to_cpu(header->kernel_ofs);
@ -106,14 +108,14 @@ static int tplink_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
return 0; return 0;
} }
static int tplink_parse_partitions(struct mtd_info *master, static int tplink_parse_partitions_offset(struct mtd_info *master,
struct mtd_partition **pparts, struct mtd_partition **pparts,
struct mtd_part_parser_data *data) struct mtd_part_parser_data *data,
size_t offset)
{ {
struct mtd_partition *parts; struct mtd_partition *parts;
struct tplink_fw_header *header; struct tplink_fw_header *header;
int nr_parts; int nr_parts;
size_t offset;
size_t art_offset; size_t art_offset;
size_t rootfs_offset; size_t rootfs_offset;
size_t squashfs_offset; size_t squashfs_offset;
@ -126,8 +128,6 @@ static int tplink_parse_partitions(struct mtd_info *master,
goto err; goto err;
} }
offset = TPLINK_KERNEL_OFFS;
header = tplink_read_header(master, offset); header = tplink_read_header(master, offset);
if (!header) { if (!header) {
pr_notice("%s: no TP-Link header found\n", master->name); pr_notice("%s: no TP-Link header found\n", master->name);
@ -180,15 +180,38 @@ err:
return ret; return ret;
} }
static int tplink_parse_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
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,
struct mtd_partition **pparts,
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 = { static struct mtd_part_parser tplink_parser = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.parse_fn = tplink_parse_partitions, .parse_fn = tplink_parse_partitions,
.name = "tp-link", .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) static int __init tplink_parser_init(void)
{ {
register_mtd_parser(&tplink_parser); register_mtd_parser(&tplink_parser);
register_mtd_parser(&tplink_64k_parser);
return 0; return 0;
} }