Add new board: Purism Librem Server L1UM

[MrChromebox]

Add new board: Purism Librem Server L1UM

• Add option to build using coreboot 4.11
• Port measured boot, cross-compiler patches forward
• Add measured boot support for FSP Broadwell-DE platform
• Add coreboot patch to read board serial from file CBFS
• Add coreboot Librem server L1UM board support patch
• Add board, coreboot, kernel configs
• Add special handling for librem_l1um board in flash.sh to persist PCIe lane config

Signed-off-by: Matt DeVillier matt.devillier@puri.sm

[Tonux599]

@MrChromebox @tlaurion I really think there needs to be a discussion here. What do theses measured boot patches measure that vboot's doesn't?

[tlaurion]

@Tonux599 you are questionning 7d8cdba#diff-d5759d1bcdfe5d4b89192dc06d8778657c930c2298b9bc770535d05cefc5535a ?

My understanding here is that this patch permits to activate Measuredboot without VBOOT. where my understanding of coreboot not being large enough makes me realize that a lot of things were not present inside of Kconfig (LOCAL_VERSION) including ANY_TOOLCHAIN, which means that even if those options were specified under coreboot config, they were not retained as valid confiuration options and returned to default prior of KGPE-D16 coreboot compilation. I will get back at doing my homeworks on understanding what options are actually kept when doing make savedefconfig after having passed kgpe-d16 config to coreboot build dir's .config

@Tonux599 maybe point those questionning under KGPE-d16 WIP branch to document and question there? Else @MrChromebox has a lot more experience with coreboot then I have. Have to upgrade those skills.

[tlaurion]

@MrChromebox : please add this board inside of CircleCI configuration so we at least know that the builds is a success.

diff --git a/.circleci/config.yml b/.circleci/config.yml
index b40385a..d762aa0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -60,6 +60,24 @@ jobs:
 #          path: build/qemu-linuxboot/hashes.txt
 
       - run:
+          name: librem_l1um
+          command: |
+            rm -rf build/librem_l1um/* build/log/* && make CPUS=4 \
+                V=1 \
+                BOARD=librem_l1um || (find ./build/ -name "*.log" -type f -mmin -1|while read log; do echo ""; echo '==>' "$log" '<=='; echo ""; cat $log;done; exit 1) \
+          no_output_timeout: 3h
+      - run:
+          name: Ouput librem_l1um hashes
+          command: |
+            cat build/librem_l1um/hashes.txt \
+      - run:
+          name: Archiving build logs for librem_l1um
+          command: |
+             tar zcvf build/librem_l1um/logs.tar.gz build/log/*
+      - store-artifacts:
+          path: build/librem_l1um
+
+      - run:
           name: librem_mini
           command: |
             rm -rf build/librem_mini/* build/log/* && make CPUS=4 \

[tlaurion]

Success https://app.circleci.com/pipelines/github/tlaurion/heads/517/workflows/2b95d841-28ab-4930-8199-19ec2582adc0/jobs/554