I’m running Angstrom (Linux 3.8.13, September 12, 2013) on a BeagleBone Black and I’ve tried configuring uio_pruss to allocate a large amount of external memory, but I have found that sizes greater than 8MB don’t work and lead to uio_pruss failure.
The command I have been trying is:
/sbin/modprobe uio_pruss extram_pool_sz=0x800001
… and the error message I receive is:
pruss_uio 4a300000.pruss: Could not allocate external memory
I would like to allocate more than 8MB of external memory for PRU access. Is it possible to allocate more than 8MB? If so, what can I do to make it work?