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
The config file /etc/fw_env.config is generated dynamically basing on
the partition table and, in the case of NAND-based SOMs, on the NAND
geometry. This is done on a postinst script that modifies the file on the
first boot of the target. Since this is not allowed on read-only-rootfs,
this commit adds a default fw_env.config file to use instead when
read-only-rootfs is enabled.
Signed-off-by: Hector Palacios <hector.palacios@digi.com>
https://onedigi.atlassian.net/browse/DEL-7708
This is a replacement for u-boot-fw-utils. Adapt the u-boot-fw-utils patches
to this new library and include the same logic as the u-boot-fw-utils recipe
(generate and install the U-Boot environment configuration file in the rootfs)
For now, remove the u-boot-default-env dependency, since the package doesn't
exist in zeus.
https://jira.digi.com/browse/DEL-7410
Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>
Hector Palacios
Arturo Buzarra
Javier Viguera
Gabriel Valcazar