meta-digi/meta-digi-arm/recipes-bsp/libubootenv
Hector Palacios 0e61017da8 libubootenv: add fall-back function to read HWID from nvmem
The HWID is populated on the device tree by the boot loader.
This can be used as a key modifier when encrypting the U-Boot
environment. Some old U-Boot versions however, did not populate
the HWID on the device tree. When updating firmware from an
old version to a new one, the library may not be able to read
the HWID from the DT and then be unable to unencrypt the
environment.

This patch implements a fall-back function to read the HWID
directly from the nvmem node (sysfs). Implementation has been
done for ccimx6 family only, where this case of old U-Boot
can happen.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

https://onedigi.atlassian.net/browse/DEL-8444
(cherry picked from commit 222a91f213)
2023-04-19 09:39:43 +02:00
..
libubootenv libubootenv: add fall-back function to read HWID from nvmem 2023-04-19 09:39:43 +02:00
libubootenv_%.bbappend libubootenv: add fall-back function to read HWID from nvmem 2023-04-19 09:39:43 +02:00