Several different firmware users have repetitive code to extract the
firmware data from a FIT. Add some helper functions to reduce the amount
of repetition. fit_conf_get_prop_node (eventually) calls
fdt_check_node_offset_, so we can avoid an explicit if. In general, this
version avoids printing on error because the callers are typically
library functions, and because the FIT code generally has (debug)
prints of its own. One difference in these helpers is that they use
fit_image_get_data_and_size instead of fit_image_get_data, as the former
handles external data correctly.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

FTD blob can be put immediately after the OS image.
So use strict inequality for start address check.

Fixes: fbde7589ce30 ("common: bootm: add checks to verify if ramdisk / fdtimage overlaps OS image")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

fit_image_get_comp() should not set value -1 in case it can't read
the compression node. Instead, leave the value untouched in that case
as it can be absent and a default value previously defined by the
caller of fit_image_get_comp() should be used.

As a result the warning message
WARNING: 'compression' nodes for ramdisks are deprecated, please fix your .its file!
no longer shows if the compression node is actually absent.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

Change variable name 'imape_comp' to the supposedly intended name
'image_comp'.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

Replace 'disto' with 'distro' since they are all functions about distro
booting.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

Don't assign a value to a variable if it is not used afterwards.
Move variables to the code fragment where they are used.

Addresses-Coverity: CID 356243 ("Code maintainability issues (UNUSED_VALUE)")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

uclass_find_first_device() may return NULL if no device for the uclass
exists. Handle this case gracefully.

Addresses-Coverity: CID 356244 ("Null pointer dereferences (FORWARD_NULL)")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

This converts the following to Kconfig:
   CONFIG_SYS_FDT_PAD

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Add support for VBE simple, which permits firmware update of a single
image stored in MMC or another block device.

Signed-off-by: Simon Glass <sjg@chromium.org>

Create a new bootmeth for VBE along with a library to handle finding the
VBE methods.

Signed-off-by: Simon Glass <sjg@chromium.org>