Raspberry Pi Barebox State Integration - SD card
tomaz.solc at klevio.com
Tue Jun 4 00:52:42 PDT 2019
On 4. 06. 19 08:32, Valentina Rusu wrote:
> * other boards have EEPROM, NAND besides SD card and they are
> described in the device tree; RPi has no such thing;
> * somehow I need to write the state on the SD card in a location
> where does not interfere with the partitions created (boot, rootfs,
> user partitions, etc);
Barebox on Raspberry Pi automatically saves nv variables to the
"barebox.env" file in the first partition - see rpi_env_init() in
rpi-common.c. This is usually the /boot partition with FAT that also has
the VideoCore firmware files, etc.
I have a working bootchooser setup for a board based on R.Pi CM3 using
this functionality. No special setup was required in barebox regard to
saving the bootchooser state.
I'm not familiar with meta-barebox and RAUC though.
More information about the barebox