Hi all, Got Debian working nicely on an allwinner device with SD boot.
The uboot variables seem to be stored in a file boot.scr in mmcblk0p1 (or are they in /boot/boot.scr?) Although the fw_env I have does seem to support the new style entry in fw_env.config : # VFAT example /mnt/dos/boot.scr 0x0000 0x4000 If i copy the settings file file to somewhere (safe) and setup to use the copied file, fw_env tries to read the 0x4000 bytes and fails (file is only 1500 bytes long). If I extend the file with zeros to 16k, then fw_printenv works, but reports bad CRC (so fw_setenv basically uses a default config, nothing like what I need...). A subsequent fw_setenv DOES work.....(i.e. it has written a valid CRC). So it seems like if the original boot.scr was >16k and had a valid CRC, then the tools would work... Is this a known issue with Debian uboot installs on SD card? Is there an official way (that I have missed) of modifying the uboot environment in this situation? S
