From 82dcd5b9ba1bd60cc18068592368702d19242fb7 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Sun, 14 Mar 2021 12:52:49 -0700 Subject: [PATCH] Documentation: Add deprecation notice for SAR support in VPD This change updates the release notes for coreboot-4.14 to add deprecation notice for SAR support in VPD for Chrome OS platforms. BUG=b:173465272 Change-Id: If6d511a22a3a2a31671dac91e57e801134d4ecf8 Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/c/coreboot/+/51486 Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- .../releases/coreboot-4.14-relnotes.md | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) 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 -------------------