rpi3: Implement simple interrupt routing
Implement minimal interrupt routing functions. All interrupts are
treated as non-secure interrupts to be handled by the non-secure world.
Add note to the documentation about disabling FIQs qhen using OP-TEE
with Linux.
Change-Id: I937096542d973925e43ae946c5d0b306d0d95a94
Tested-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/docs/plat/rpi3.rst b/docs/plat/rpi3.rst
index c8e2405..5e535c6 100644
--- a/docs/plat/rpi3.rst
+++ b/docs/plat/rpi3.rst
@@ -243,6 +243,12 @@
BL32_EXTRA1=tee-pager_v2.bin BL32_EXTRA2=tee-pageable_v2.bin``
to put the binaries into the FIP.
+ Note: If OP-TEE is used it may be needed to add the following options to the
+ Linux command line so that the USB driver doesn't use FIQs:
+ ``dwc_otg.fiq_enable=0 dwc_otg.fiq_fsm_enable=0 dwc_otg.nak_holdoff=0``.
+ This will unfortunately reduce the performance of the USB driver. It is needed
+ when using Raspbian, for example.
+
- ``TRUSTED_BOARD_BOOT``: This port supports TBB. Set this option
``TRUSTED_BOARD_BOOT=1`` to enable it. In order to use TBB, you might
want to set ``GENERATE_COT=1`` to let the contents of the FIP automatically