[coreboot-gerrit] Change in coreboot[master]: [RFC] mb/ocp/deltalake: append Linuxboot command line option

[Jonathan Zhang (Code Review)]

Hello Marc Jones, build bot (Jenkins), Johnny Lin, Stefan Reinauer, insomniac, Angel Pons, Bryant Ou, ron minnich,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/47055

to look at the new patch set (#2).

Change subject: [RFC] mb/ocp/deltalake: append Linuxboot command line option
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[RFC] mb/ocp/deltalake: append Linuxboot command line option

If Linuxboot is used as payload, and if corresponding VPD variable
is set, use the value to append Linuxboot command line option as
defined at build time.

With this, user can customize linuxboot boot behavior without needing
a different image. For example, user can increase log level.

Note that this code should not be in mainboard, I hope to get
community feedback on where it should be.

TESTED=tested on DeltaLake, with this VPD setting:
vpd -f build/coreboot.rom -i RW_VPD -s linux_command_line="loglevel=7 cpuidle.off=1"

Signed-off-by: Jonathan Zhang 
Signed-off-by: Bryant Ou 
Change-Id: I5f5cde3957c2716864f55d70f18f47b493164ed8
---
M src/mainboard/ocp/deltalake/ramstage.c
M src/mainboard/ocp/deltalake/vpd.h
2 files changed, 48 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/47055/2