We have a vpu instruction marked as "sleep"
On 21/05/2016 3:20 pm, "Kristina Brooks" <tinab@xxxxxxx> wrote:
So, as it turns out, all bus masters aside from the VPU have their secure
bit set to off, cutting them off from "secure" registers (regardless of
*APROT** setting), at least, as far as I understand. So we need to keep
some stuff running on the VPU at least to relay reads/writes to certain
secure registers. I want to implement a mailbox/doorbell interface between
some small monitor running on the VPU and ARM but I haven't been able to
find anything similar to ARM "wait for interrupt" state on VideoCore? Does
such a state exist and does anyone know how to enter it? (Just a low power
state where the VPU is sleeping and waiting for an interrupt)
Thanks.
