The Juno PIO mapping is 8M, so it should be using a 32-bit PIO address translation. Further, PIO addresses should start at 0 and be translated to/from the ARM MMIO region. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Tested-by: Ryan Harkin <ryan.harkin@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>