rampayload: Add the linuxcheck payload

Hardware / Coreboot - Ronald G. Minnich [gmail.com] - 14 September 2018 09:59 EDT

The i386.c file uses standard 3f8 UART for some simple diagnostic prints, and the libpayload console otherwise.

This payload was used to debug Linux as a rampayload and was very helpful for that work.

Change-Id: I1cce5528780cd825fd91a88137fa70abd9f218e7

95c331b94b rampayload: Add the linuxcheck payload
payloads/linuxcheck/Makefile | 37 ++++++++++++++++++++++++++++
payloads/linuxcheck/i386.c | 48 +++++++++++++++++++++++++++++++++++++
payloads/linuxcheck/linuxcheck.c | 52 ++++++++++++++++++++++++++++++++++++++++
payloads/linuxcheck/linuxcheck.h | 22 +++++++++++++++++
4 files changed, 159 insertions(+)

Upstream: review.coreboot.org


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