[PATCH] arm64: Implement CONFIG_CMDLINE_EXTEND

[Rob Herring]

On Wed, Nov 18, 2015 at 3:28 AM, Pavel Fedin <p.fedin at samsung.com> wrote:
> Add an option to extend built-in command line with one obtained from
> the device tree.
>
> This option is very useful for, for example, switching between some
> stable and development version, when one of them requires additional
> arguments (e. g. to turn on some extra debug). It can be annoying to
> reprogram command line in the bootloaded every time.
>
> Actually, this patch introduces the necessary support to all
> architectures using the device tree, however only arm64 Kconfig is
> modified, because this is the only platform i can test.

There is work to make the cmdline options and handling generic[1].
There are lots of sharp corners here and I'd like to sort out the
generic support before adding more combinations.

Rob

[1] http://www.spinics.net/lists/arm-kernel/msg449844.html