From d35de55e55667b26e2969df191ae472f20e5ce45 Mon Sep 17 00:00:00 2001 From: Antonio Nino Diaz Date: Wed, 11 Jul 2018 21:00:32 +0100 Subject: 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) Signed-off-by: Antonio Nino Diaz --- docs/plat/rpi3.rst | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'docs/plat') diff --git a/docs/plat/rpi3.rst b/docs/plat/rpi3.rst index c8e2405cc..5e535c61d 100644 --- a/docs/plat/rpi3.rst +++ b/docs/plat/rpi3.rst @@ -243,6 +243,12 @@ The following build options are supported: 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 -- cgit v1.2.3