On 9 January 2018 at 08:31, Riku Voipio <riku.voipio@xxxxxxxxxx> wrote: > Hi, > > Loading omap_rng module on McBin causes hangup (in about 9/10 times). > Looking at /proc/interrupts it seems the interrupt starts running like > crazy, and after a while the whole system is unresponsive. This with > Debian kernel (everything possible as modules) and EFI as bootloader. > The EFI firmware appears[1] to use the rng unit to provide a seed for > KASRL, I wonder if the driver needs to depend less on the state left > by firmware, or the firmware needs to de-initialize the RNG before > booting. > ... > 87: 0 0 0 0 ICU.f21e0000 95 > Level f2760000.trng > 88: 2532580 0 0 0 ICU.f41e0000 95 > Level f4760000.trng ... My original code had gMarvellTokenSpaceGuid.PcdEip76TrngBaseAddress|0xF2760000 which means the interrupt storm is being caused by the /other/ RNG, not the one UEFI uses. Could you please check whether your UEFI source is still using the same base address?
