Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

We used to pass the DCD data from the boards. This patch allows
to optionally skip passing DCD data. In this case the DCD data
from the flash image is used if present.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

To elminate some code duplication.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Conflicts:
	arch/arm/mach-imx/include/mach/devices-imx53.h

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Some boards do not have a DCD table since they initialize everything
in code, so allow to skip it and leave the corresponding pointers
empty.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

buf is still needed, instead mbr should be freed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Pass the buffer size to the file detection code. This makes sure we do not
read past the buffer. This is especially useful for ext filesystem detection
as the magic is at byte offset 1080. Also introduce a FILE_TYPE_SAFE_BUFSIZE
define which is set to the minimum bufsize the detection code needs to detect
all known filetypes.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This adds support for an update handler for internal boot. Currently
handled are:

- v1 MMC/SD
- v2 MMC/SD
- v2 NAND

where v1 is found on i.MX25, i.MX35 and i.MX51. v2 is found on i.MX53.

This code intentionally does not use the DCD data compiled into every
i.MX internal boot image. This makes it possible to make a pure second
stage barebox bootable on i.MX internal boot devices later.

This has been tested on the i.MX51 babbage, i.MX53 loco and i.MX53 tx53
board.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>