[coreboot-gerrit] Change in coreboot[master]: lib/cbmem_top: Add a common cbmem_top implementation

[Arthur Heymans (Code Review)]

Hello Kyösti Mälkki, Aaron Durbin, Julius Werner, build bot (Jenkins), Patrick Georgi, Martin Roth,

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

https://review.coreboot.org/c/coreboot/+/36273

to look at the new patch set (#12).

Change subject: lib/cbmem_top: Add a common cbmem_top implementation
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lib/cbmem_top: Add a common cbmem_top implementation

This adds a common cbmem_top implementation to be used by all coreboot
target. To ease the review process it is currently guarded by a
Kconfig symbol to be able to make transition platforms/arch step by
step.

To avoid a lot of preprocessor and/or changing file inclusion all
current cbmem_top implementations will be renamed cbmem_top_romstage
and called by the common cbmem_top function. The additional advantage
is that if possible a static variable is used to cache the
cbmem_top_romstage result.

Change-Id: Ie767542ee25483acc9a56785ce20a885e9a63098
Signed-off-by: Arthur Heymans 
---
M src/include/cbmem.h
M src/lib/Kconfig
M src/lib/Makefile.inc
A src/lib/cbmem_top.c
4 files changed, 44 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/73/36273/12