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This patch introduces a function to secure the on-chip TZRAM memory. The
Tegra132 and Tegra210 chips do not have a compelling use case to lock the
TZRAM. The trusted OS owns the TZRAM aperture on these chips and so it
can take care of locking the aperture. This might not be true for future
chips and this patch makes the TZRAM programming flexible.

Change-Id: I3ac9f1de1b792ccd23d4ded274784bbab2ea224a
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch enables the runtime console for all Tegra platforms
before exiting BL31. This would enable debug/error prints to be
always displayed on the UART console.

Change-Id: Ic48d61d05b0ab07973d6fc2dc6b68733a42a3f63
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The BL2 fills in the UART controller ID to be used as the normal as
well as the crash console on Tegra platforms. The controller ID to
UART controller base address mapping is handled by each Tegra SoC
the base addresses might change across Tegra chips.

This patch adds the handler to parse the platform params to get the
UART ID for the per-soc handlers.

Change-Id: I4d167b20a59aaf52a31e2a8edf94d8d6f89598fa
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch adds another member, tzdram_base, to the plat_params_from_bl2 struct
in order to store the TZDRAM carveout base address used to load the Trusted OS.
The monitor programs the memory controller with the TZDRAM base and size in order
to deny any accesses from the NS world.

Change-Id: If39b8674d548175d7ccb6525c18d196ae8a8506c
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch checks that the pointers to BL3-3 and BL3-2 ep_info
structs are valid before accessing them. Add some INFO prints
in the BL3-1 setup path for early debugging purposes.

Change-Id: I62b23fa870f1b2fb783c8de69aab819f1749d15a
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

We have lots of duplicated defines (and comment blocks too).
Move them to include/plat/common/common_def.h.

While we are here, suffix the end address with _END instead of
_LIMIT.  The _END is a better fit to indicate the linker-derived
real end address.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

On Tegra SoCs, the TZDRAM contains the BL31 and BL32 images. This patch
uses only the actual memory available for BL31 instead of mapping the
entire TZDRAM.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch removes the bootargs pointer from the platform params
structure. Instead the bootargs are passed by the BL2 in the
bl32_ep_info struct which is a part of the EL3 params struct.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch introduces the backend required for implementing the delay
timer API. Tegra has an on-chip free flowing us timer which can be
used as the delay timer.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch sets the 'USE_COHERENT_MEM' flag to '0', so that the
coherent memory region will not be included in the memory map.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch adds support to reserve a memory carveout region in the
DRAM on Tegra SoCs. The memory controller provides specific registers
to specify the aperture's base and size. This aperture can also be
changed dynamically in order to re-size the memory available for
DRM video playback. In case of the new aperture not overlapping
the previous one, the previous aperture has to be cleared before
setting up the new one. This means we do not "leak" any video data
to the NS world.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch adds support to run a Trusted OS during boot time. The
previous stage bootloader passes the entry point information in
the 'bl32_ep_info' structure, which is passed over to the SPD.

The build system expects the dispatcher to be passed as an input
parameter using the 'SPD=<dispatcher>' option. The Tegra docs have
also been updated with this information.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

T210 is the latest chip in the Tegra family of SoCs from NVIDIA. It is an
ARM v8 dual-cluster (A57/A53) SoC, with any one of the clusters being active
at a given point in time.

This patch adds support to boot the Trusted Firmware on T210 SoCs. The patch
also adds support to boot secondary CPUs, enter/exit core power states for
all CPUs in the slow/fast clusters. The support to switch between clusters
is still not available in this patch and would be available later.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>