A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When globalvar_add_simple was called on previously existing variables
then the value was overwritten, even when value was passed as NULL.
Do not overwrite the value in this case which allows us to do a 'global'
on the same variable multiple times without loosing the values.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
So far we only had the version command which is able to print
the barebox version. To make the barebox version available for
scripts add a globalvar for it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Calling globalvar_add_simple() and setting a value is more than common.
Add a parameter for the initial value.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This implements global shell variable support. This is done by registering
a new device named 'global', so global variables are just plain device
parameters.
Global variables are useful for storing the global state in the environment.
Currently we do this by sourcing scripts instead of executing them which is
quite limiting.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Jean-Christophe PLAGNIOL-VILLARD