[coreboot-gerrit] Change in coreboot[master]: lib: Check for non-existent DIMMs in check_if_dimm_changed

[Eric Lai (Code Review)]

Attention is currently required from: Jakub Czapiga, Ivy Jian, Eric Lai, Lean Sheng Tan.
Hello Frank Wu, build bot (Jenkins), Jakub Czapiga, Subrata Banik, Tim Wawrzynczak, Ivy Jian, Lean Sheng Tan,

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

https://review.coreboot.org/c/coreboot/+/63628

to look at the new patch set (#10).

Change subject: lib: Check for non-existent DIMMs in check_if_dimm_changed
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lib: Check for non-existent DIMMs in check_if_dimm_changed

Treat dimm addr_map 0 non-existent. addr_map default is 0, we don't set
it if Hw is not present. Also change the test case default to avoid 0.
SODIMM SMbus address 0x50 to 0x53 is commonly used.

BUG=b:213964936
BRANCH=firmware-brya-14505.B
TEST=emerge-brya coreboot chromeos-bootimage
The MRC training does not be performed again after rebooting.

Signed-off-by: Eric Lai 
Change-Id: I2ada0109eb0805174cb85d4ce373e2a3ab7dbcac
---
M src/lib/spd_cache.c
M tests/lib/spd_cache-test.c
2 files changed, 14 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/28/63628/10