ROOTDEV export not working

[Xavier Boudet]

I am using oneiric pre-installed image for omap4 with jasper 0.66.
Script jasper_setup is supposed to use "ROOTDEV"environment value exported by jasper_growroot.
Installing image on Blaze board (with eMMC support) demonstrate that there is an issue with "export ROOTDEV" in jasper_growroot, the value is not accessible then into jasper_setup
By adding some traces into jasper_setup (echo "ROOTDEV=${ROOTDEV}" >> /dev/kmsg) we can see that ROOTDEV is not set.
Installation on Blaze Board is then failing.

[Oliver Grawert (ogra)]

i fear for now you have to replace the hardcoded value in the jasper_setup script with a better hardcoded value ... easiest should be to just append an overlay file (named jasper_setup) with the same path to your initrd.

http://wiki.debian.org/DebianInstaller/NetbootFirmware#Squeeze_Example_.231_:_add_single_firmware_deb shows how you can easily merge 2 cpio archives where one has an overlay.