the following patch was just integrated into master: commit 318708ddce2f3322e451bd066c88f5ca04ab179a Author: Vadim Bendebury vbendeb@chromium.org Date: Thu Oct 23 16:02:51 2014 -0700
chromeos: Add a function to copy VPD WiFi calibration data to CBMEM
This patch adds functions looking in the VPD for WiFi calibration data, and if found, copying the calibration blobs into CBMEM.
Two possible key names templates are used: wifi_base64_calibrationX and wifi_calibrationX, where X is replaced by the WiFi interface number. Up to four interfaces can be provisioned.
The calibration data will be retrieved from CBMEM by the bootloader and placed into the device tree before starting the kernel.
The structure of the WiFi calibration data CBMEM entry is defined locally: it is a concatenation of the blob names and their contents. Each blob is padded as necessary to make sure that the size divisible by four.
To make sure that the exactly required amount of memory is allocated for the CBMEM entry, the function first scans the VPD, caching the information about the available blobs and calculating their combined size.
Then the required size CBMEM entry is allocates and the blobs are copied into it.
BRANCH=storm BUG=chrome-os-partner:32611 TEST=when this function is called, and the VPD includes calibration data blobs, the WIFI entry shows up in the list of CBMEM entries reported by coreboot.
Original-Change-Id: Ibe02dc36ff6254e3b9ad0a5bd2696ca29e1b2be3 Original-Signed-off-by: Vadim Bendebury vbendeb@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/225271 Original-Reviewed-by: Aaron Durbin adurbin@chromium.org
(cherry picked from commit 9fe185ae5fdc1a896bf892b498bff27a3462caeb) Signed-off-by: Aaron Durbin adurbin@chromium.org
Change-Id: Ia60f0c5c84decf9854426c4f0cb88f8ccee69046 Reviewed-on: http://review.coreboot.org/9435 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi pgeorgi@google.com
See http://review.coreboot.org/9435 for details.
-gerrit