commit cff75e0b6fe835800f8e08a32d731119cd9e3b79
author Daniel Thompson <daniel.thompson@linaro.org> Mon May 08 15:56:57 2017 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Mon May 08 17:15:12 2017 -0700
tree 54f112a3576c1bb91c2e7e7205e9d02ec458e137
parent da5e108b0288d390dae40f51c09bbb30358bf7a7

initramfs: provide a way to ignore image provided by bootloader

Many "embedded" architectures provide CMDLINE_FORCE to allow the kernel
to override the command line provided by an inflexible bootloader.
However there is currrently no way for the kernel to override the
initramfs image provided by the bootloader meaning there are still ways
for bootloaders to make things difficult for us.

Fix this by introducing INITRAMFS_FORCE which can prevent the kernel
from loading the bootloader supplied image.

We use CMDLINE_FORCE (and its friend CMDLINE_EXTEND) to imply that the
system has an inflexible bootloader.  This allow us to avoid presenting
this config option to users of systems where inflexible bootloaders
aren't usually a problem.

Link: http://lkml.kernel.org/r/20170217121940.30126-1-daniel.thompson@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>