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| -rw-r--r-- | Documentation/releases/coreboot-4.14-relnotes.md | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/releases/coreboot-4.14-relnotes.md b/Documentation/releases/coreboot-4.14-relnotes.md index 43a8d0dc0b..b4c94e90d1 100644 --- a/Documentation/releases/coreboot-4.14-relnotes.md +++ b/Documentation/releases/coreboot-4.14-relnotes.md @@ -10,6 +10,30 @@ Update this document with changes that should be in the release notes. * The chip and board additions and removals will be updated right before the release, so those do not need to be added. +Deprecations +------------ + +### SAR support in VPD for Chrome OS + +SAR support in VPD has been deprecated for Chrome OS platforms for > 1 +year now. All new Chrome OS platforms have switched to using SAR +tables from CBFS. For the next release, coreboot is updated to align +with the Chrome OS factory changes and hence SAR support in VPD is +deprecated in [CB:51483](https://review.coreboot.org/51483). Starting +with this release, anyone building coreboot for an already released +Chrome OS platform with SAR table in VPD will have to extract the +"wifi_sar" key from VPD and add it as a file to CBFS using following +steps: + * On DUT, read SAR value using `vpd -i RO_VPD -g wifi_sar` + * In coreboot repo, generate CBFS SAR file using: + `echo ${SAR_STRING} > site-local/${BOARD}-sar.hex` + * Add to site-local/Kconfig: + ``` + config WIFI_SAR_CBFS_FILEPATH + string + default "site-local/${BOARD}-sar.hex" + ``` + Significant changes ------------------- |