Correct formatstring of size_t is %zu otherwise we get:
fs/bpkfs.c: In function ‘bpkfs_probe’:
fs/bpkfs.c:440:3: warning: format ‘%d’ expects argument of type ‘int’,
but argument 5 has type ‘size_t’ [-Wformat=]
dev_dbg(dev, "%d: offset = %d\n", i, d->offset);
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Simple update file format developed for Somfy, tools and library are
available under LGPLv2 (https://www.gitorious.org/libbpk).
This format in the v1.0 allow you to store 6 types a binary stream for
a unique hardware id:
- bootloader
- bootloader_version
- description.gz
- kernel
- rootfs
- firmware_version
and you can easly add more binary stream type.
The fs will display you in a directory per hw id
and if a binary stream type is unknown will be display
as unknown_%08x
# mount image.bpk /tmp
# ls -l /tmp/hw_id_0/
-rwxrwxrwx 10 firmware_version
-rwxrwxrwx 8 firmware_version.crc
-rwxrwxrwx 1845968 kernel
-rwxrwxrwx 8 kernel.crc
-rwxrwxrwx 5062656 rootfs
-rwxrwxrwx 8 rootfs.crc
-rwxrwxrwx 248 bootloader
-rwxrwxrwx 8 bootloader.crc
-rwxrwxrwx 248925 description.gz
-rwxrwxrwx 8 description.gz.crc
-rwxrwxrwx 4 bootloader_version
-rwxrwxrwx 8 bootloader_version.crc
-rwxrwxrwx 4 unknown_1234567g
-rwxrwxrwx 8 unknown_1234567g.crc
Why BPK and not CPIO or uImage
1) CPIO
cpio does not handle > 4GiB image and does not have any crc checksum
2) uImage
uImage only provide one crc32 for the all data part and only a list of binary
stream with no information about what is what (in multi-image format)
3) BPK
BPK provide a crc32 for the header part and one crc32 per binary stream
so if you does not care of some data you are not force to check them
And you known exactly the binary stream type and for which hw to
use it.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Fargier Sylvain <sylvain.fargier@somfy.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Alexander Aring
Jean-Christophe PLAGNIOL-VILLARD