arm-trusted-firmware/plat/nvidia/tegra
Varun Wadekar dd4f0885a0 Tegra: delay_timer: support for physical secure timer
This patch modifies the delay timer driver to switch to the ARM
secure physical timer instead of using Tegra's on-chip uS timer.

The secure timer is not accessible to the NS world and so eliminates
an important attack vector, where the Tegra timer source gets switched
off from the NS world leading to a DoS attack for the trusted world.

This timer is shared with the S-EL1 layer for now, but later patches
will mark it as exclusive to the EL3 exception mode.

Change-Id: I2c00f8cb4c48b25578971c626c314603906ad7cc
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
2020-02-20 09:25:45 -08:00
..
common Tegra: delay_timer: support for physical secure timer 2020-02-20 09:25:45 -08:00
include Tegra: remove weakly defined PSCI platform handlers 2020-01-31 13:19:38 -08:00
scat spm: Remove SPM Alpha 1 prototype and support files 2019-12-20 16:03:32 +00:00
soc Tegra194: memctrl: lock mc stream id security config 2020-02-20 09:25:45 -08:00
platform.mk Tegra: macro for legacy WDT FIQ handling 2020-02-20 09:25:45 -08:00