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| author | George Hopkins <george-hopkins@null.net> | 2017-10-28 14:01:10 +0200 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2018-02-13 11:16:49 +0100 |
| commit | 5c7a58764e55d34317db2cfedb7206c634b4d7f6 (patch) | |
| tree | 56dae418ab0be486f97cfa9938253d4e0d324b31 | |
| parent | 6e7357097f665096af3e099d17898371e56f1df5 (diff) | |
| download | upstream-5c7a58764e55d34317db2cfedb7206c634b4d7f6.tar.gz upstream-5c7a58764e55d34317db2cfedb7206c634b4d7f6.tar.bz2 upstream-5c7a58764e55d34317db2cfedb7206c634b4d7f6.zip | |
kernel: mtdsplit: split by WRG header
Support splitting WRG images, which can be found in older
D-Link devices.
Signed-off-by: George Hopkins <george-hopkins@null.net>
| -rw-r--r-- | target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_wrgg.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_wrgg.c b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_wrgg.c index c0e897777d..16ebd51345 100644 --- a/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_wrgg.c +++ b/target/linux/generic/files/drivers/mtd/mtdsplit/mtdsplit_wrgg.c @@ -22,6 +22,7 @@ #define WRGG_NR_PARTS 2 #define WRGG_MIN_ROOTFS_OFFS 0x80000 /* 512KiB */ #define WRGG03_MAGIC 0x20080321 +#define WRG_MAGIC 0x20040220 struct wrgg03_header { char signature[32]; @@ -38,6 +39,16 @@ struct wrgg03_header { char digest[16]; } __attribute__ ((packed)); +struct wrg_header { + char signature[32]; + uint32_t magic1; + uint32_t magic2; + uint32_t size; + uint32_t offset; + char devname[32]; + char digest[16]; +} __attribute__ ((packed)); + static int mtdsplit_parse_wrgg(struct mtd_info *master, const struct mtd_partition **pparts, @@ -59,10 +70,14 @@ static int mtdsplit_parse_wrgg(struct mtd_info *master, return -EIO; /* sanity checks */ - if (le32_to_cpu(hdr.magic1) != WRGG03_MAGIC) + if (le32_to_cpu(hdr.magic1) == WRGG03_MAGIC) { + kernel_ent_size = hdr_len + be32_to_cpu(hdr.size); + } else if (le32_to_cpu(hdr.magic1) == WRG_MAGIC) { + kernel_ent_size = sizeof(struct wrg_header) + le32_to_cpu( + ((struct wrg_header*)&hdr)->size); + } else { return -EINVAL; - - kernel_ent_size = hdr_len + be32_to_cpu(hdr.size); + } if (kernel_ent_size > master->size) return -EINVAL; |