fs: add uimagefs

this will provide the image data and information via file

 # ls -l /tmp/
-rwxrwxrwx          3 arch
-rwxrwxrwx         12 compression
-rwxrwxrwx         16 name
-rwxrwxrwx          5 os
-rwxrwxrwx         24 time
-rwxrwxrwx         12 type
-rwxrwxrwx         10 load_addr
-rwxrwxrwx         10 entry_point
-rwxrwxrwx    2199875 data0
-rwxrwxrwx    2199875 data
-rwxrwxrwx         10 data.crc

if it's multi image

 # ls -l /tmp-multi/
-rwxrwxrwx          3 arch
-rwxrwxrwx         12 compression
-rwxrwxrwx         16 name
-rwxrwxrwx          5 os
-rwxrwxrwx         24 time
-rwxrwxrwx         16 type
-rwxrwxrwx         10 load_addr
-rwxrwxrwx         10 entry_point
-rwxrwxrwx       1292 data0
-rwxrwxrwx        983 data1
-rwxrwxrwx       2287 data
-rwxrwxrwx         10 data.crc

you can get the image header via an ioctl on any file
UIMAGEFS_METADATA

if you want to check the crc do

 # crc32 -f /tmp-multi/data -V /tmp-multi/data.crc
CRC32 for /tmp-multi/data 0x00000000 ... 0x000008ee ==> 0x88d5a0db

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index be4797f0e6..d11431d3d1 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -44,6 +44,10 @@ config FS_NFS
 source fs/fat/Kconfig
 source fs/ubifs/Kconfig
 
+config FS_UIMAGEFS
+	bool
+	prompt "uImage FS support"
+
 config PARTITION_NEED_MTD
 	bool