Make errno a positive value ...

Normally errno contains a positive error value. A certain unnamed developer
mixed this up while implementing U-Boot-v2. Also, normally errno is never
set to zero by any library function.
This patch fixes this.

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

parameter: return empty string for unset parameters ...

Currently we return NULL for unset parameters. As we can't set them
back to NULL once set this is not very consistent. Return an empty
string instead.

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

dev_add_param: check if param exists already ...

Before adding a new parameter to a device we should check if
it already exists.

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

param: make return value of param getter function const ...

The string returned by the getter function should not be
changed. Make it const.

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

net: use static string in string_to_ip ...

Simplify usage of ip_to_string by using a static string.

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

doc: fix wrongly named parameter ...

Silence this warning:

lib/parameter.c:85: Warning: argument `value' of command @param is not found in the argument list of dev_set_param(struct device_d *dev, const char *name, const char *val)
lib/parameter.c:85: Warning: The following parameters of dev_set_param(struct device_d *dev, const char *name, const char *val) are not documented:
  parameter val

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

rework device parameters ...

Change device parameters so that the memory management is in generic
code. This also removes the need of storing statically initialized
parameters as they are stored in a struct list_head for each device.

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

rename U-Boot-v2 project to barebox ...

This has been done with the following script:

find -path ./.git -prune -o -type f -print0 | xargs -0 -r sed -i \
	-e 's/u2boot/barebox/g' \
	-e 's/U2Boot/barebox/g' \
	-e 's/U-boot V2/barebox/g' \
	-e 's/u-boot v2/barebox/g' \
	-e 's/U-Boot V2/barebox/g' \
	-e 's/U-Boot-v2/barebox/g' \
	-e 's/U_BOOT/BAREBOX/g' \
	-e 's/UBOOT/BAREBOX/g' \
	-e 's/uboot/barebox/g' \
	-e 's/u-boot/barebox/g' \
	-e 's/u_boot/barebox/g' \
	-e 's/U-Boot/barebox/g' \
	-e 's/U-boot/barebox/g' \
	-e 's/U-BOOT/barebox/g'

find -path ./.git -prune -o \( -name "*u-boot*" -o -name "*uboot*" -o -name "*u_boot*" \) -print0 | \
	xargs -0 -r rename 's/u[-_]?boot/barebox/'

It needs some manual fixup following in the next patch

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

Move the parameter's documentation where it belongs to ...

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>

Fix string_to_ip ...

Use a pointer to an ip address instead of the return value in string_to_ip
and use the return value for error indication only. 0.0.0.0 can be a valid
ip address

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

parameter: set errno in dev_set_param ...

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

parameter: make stringlen more readable ...

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

[sparse] use NULL for nullpointer ...

fixes:
lib/parameter.c:108:19: warning: Using plain integer as NULL pointer

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

replace 8 spaces with tabs

svn_rev_706 ...

add file headers

svn_rev_653 ...

restructure tree, add reginfo command

svn_rev_639