how u-boot handles the environment (rpi4, fat environment)

I'm running ubuntu 20.04 server (which uses u-boot v2021.01 with minor changes/enhancements) fw_printenv doesn't seem to work -- it always comes up with a crc error (I haven't tried fw_setenv yet). Is there a spec of how the environment works? I haven't seen one. Without this patch, I get: Warn

Re: how u-boot handles the environment (rpi4, fat environment)

on reboot I get: *** Warning - bad CRC, using default environment The version string (I'm using the ubuntu source) is: U-Boot 2021.01-gc7eed6f7-dirty (Sep 27 2022 - 20:05:05 -0400) On Thu, Sep 29, 2022 at 8:57 AM Tom Rini wrote: > On Sun, Sep 25, 2022 at 12:46:10PM -0400, marty leisner wro