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- --- a/drivers/mtd/bcm47xxpart.c
- +++ b/drivers/mtd/bcm47xxpart.c
- @@ -15,6 +15,8 @@
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
-
- +#include <uapi/linux/magic.h>
- +
- /*
- * NAND flash on Netgear R6250 was verified to contain 15 partitions.
- * This will result in allocating too big array for some old devices, but the
- @@ -39,7 +41,8 @@
- #define ML_MAGIC1 0x39685a42
- #define ML_MAGIC2 0x26594131
- #define TRX_MAGIC 0x30524448
- -#define SQSH_MAGIC 0x71736873 /* shsq */
- +#define SHSQ_MAGIC 0x71736873 /* shsq (weird ZTE H218N endianness) */
- +#define UBI_EC_MAGIC 0x23494255 /* UBI# */
-
- struct trx_header {
- uint32_t magic;
- @@ -50,7 +53,7 @@ struct trx_header {
- uint32_t offset[3];
- } __packed;
-
- -static void bcm47xxpart_add_part(struct mtd_partition *part, char *name,
- +static void bcm47xxpart_add_part(struct mtd_partition *part, const char *name,
- u64 offset, uint32_t mask_flags)
- {
- part->name = name;
- @@ -58,6 +61,26 @@ static void bcm47xxpart_add_part(struct
- part->mask_flags = mask_flags;
- }
-
- +static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master,
- + size_t offset)
- +{
- + uint32_t buf;
- + size_t bytes_read;
- +
- + if (mtd_read(master, offset, sizeof(buf), &bytes_read,
- + (uint8_t *)&buf) < 0) {
- + pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
- + offset);
- + goto out_default;
- + }
- +
- + if (buf == UBI_EC_MAGIC)
- + return "ubi";
- +
- +out_default:
- + return "rootfs";
- +}
- +
- static int bcm47xxpart_parse(struct mtd_info *master,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
- @@ -73,8 +96,12 @@ static int bcm47xxpart_parse(struct mtd_
- int last_trx_part = -1;
- int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
-
- - if (blocksize <= 0x10000)
- - blocksize = 0x10000;
- + /*
- + * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
- + * partitions were aligned to at least 0x1000 anyway.
- + */
- + if (blocksize < 0x1000)
- + blocksize = 0x1000;
-
- /* Alloc */
- parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,
- @@ -186,8 +213,11 @@ static int bcm47xxpart_parse(struct mtd_
- * we want to have jffs2 (overlay) in the same mtd.
- */
- if (trx->offset[i]) {
- + const char *name;
- +
- + name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
- bcm47xxpart_add_part(&parts[curr_part++],
- - "rootfs",
- + name,
- offset + trx->offset[i],
- 0);
- i++;
- @@ -203,7 +233,8 @@ static int bcm47xxpart_parse(struct mtd_
- }
-
- /* Squashfs on devices not using TRX */
- - if (buf[0x000 / 4] == SQSH_MAGIC) {
- + if (le32_to_cpu(buf[0x000 / 4]) == SQUASHFS_MAGIC ||
- + buf[0x000 / 4] == SHSQ_MAGIC) {
- bcm47xxpart_add_part(&parts[curr_part++], "rootfs",
- offset, 0);
- continue;
|
