The NT disk Signature is a unique 32-bit value in the MBR allowing
to identify a MSDOS partitioned disk. The signature can be used to
specify the Linux rootfs.
This patch adds support for the NT disk Signature in the form of a
device parameter which can both be read and written.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some drivers use blk->ops->read/write. This bypasses the caching block
layer and was never intended like this. The upper API to the block layer
is the cdev layer. This patch adds block_read and block_write functions
and uses them where appropriate.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
form linux 3.8
so you can have part by num or name
not by GUID as this is a non human reading name
`---- ffe08000.sata
`---- 0x00000000-0x3fffffff: /dev/ata0
`---- 0x00100000-0x063fffff: /dev/ata0.0
`---- 0x00100000-0x063fffff: /dev/ata0.boot
`---- 0x06400000-0x3fefffff: /dev/ata0.1
`---- 0x06400000-0x3fefffff: /dev/ata0.linux
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we can register partion with name as present in EFI GPT
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we can support multiple format
use filetpye to detect the parser to use
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
