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This patch enables the processor retention and L2/CPUECTLR read/write
access from the NS world only for Cortex-A57 CPUs on the Tegra SoCs.

Change-Id: I9941a67686ea149cb95d80716fa1d03645325445
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch moves these address translation helper macros to individual
Tegra SoC makefiles to provide more control.

Change-Id: Ieab53c457c73747bd0deb250459befb5b7b9363f
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch converts the common SiP handler to SoC specific SiP
handler. T210 and T132 have different SiP SMCs and so it makes
sense to move the SiP handler to soc/t132 and soc/t210 folders.

Change-Id: Idfe48384d63641137d74a095432df4724986b241
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The Flow Controller hardware block is not present across all Tegra
SoCs, hence include the driver files from SoC specific makefiles.

T132/T210 are the SoCs which include this hardware block while future
SoCs have removed it.

Change-Id: Iaca25766a4fa51567293d10cf14dae968b0fae80
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

Replaced plat_get_syscnt_freq by plat_get_syscnt_freq2 on all
upstream platforms.

Change-Id: I3248f3f65a16dc5e9720012a05c35b9e3ba6abbe

This patch moves the definition for `plat_get_syscnt_freq()`
from arm_bl31_setup.c to arm_common.c. This could be useful
in case a delay timer needs to be installed based on the
generic timer in other BLs.
This patch also modifies the return type for this function
from `uint64_t` to `unsigned long long` within ARM and other
platform files.

Change-Id: Iccdfa811948e660d4fdcaae60ad1d700e4eda80d

This patch modifies the Tegra port to support the new platform
APIs so that we can disable the compat layer. This includes
modifications to the power management and platform topology code.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch adds a per-soc system reset handler for Tegra chips. The
handler gets executed before the actual system resets. This allows
for custom handling of the system reset sequence on each SoC.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch programs the CPUECTLR_EL1 and L2ECTLR_EL1 registers,
so that the core waits for 512 generic timer CNTVALUEB ticks before
entering retention state, after executing a WFI instruction.

This functionality is configurable and can be enabled for platforms
by setting the newly defined 'ENABLE_L2_DYNAMIC_RETENTION' and
'ENABLE_CPU_DYNAMIC_RETENTION' flag.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The TZDRAM base on the reference platform has been bumped up due to
some BL2 memory cleanup. Platforms can also use a different TZDRAM
base by setting TZDRAM_BASE=<value> in the build command line.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The Memory Select Switch Controller routes any CPU transactions to
the appropriate slave depending on the transaction address. During
system suspend, it loses all config settings and hence the CPU has
to restore them during resume.

This patch restores the controller's settings for enabling WRAP to
INCR burst type conversions on the master ports, for any incoming
requests from the AXI slave ports.

Tested by performing multiple system suspend cycles.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch implements support for T132 (Denver CPU) based Tegra
platforms.

The following features have been added:

* SiP calls to switch T132 CPU's AARCH mode
* Complete PSCI support, including 'System Suspend'
* Platform specific MMIO settings
* Locking of CPU vector registers
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The validate_power_state() handler checks the power_state for a valid afflvl
and state id. Although the afflvl check is common, the state ids are implementation
defined.

This patch moves the handler to the tegra/soc folder to allow each SoC to validate
the power_state for supported parameters.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch moves the inclusion of CPU code (A53, A57) to T210's
makefile. This way we can reduce code size for Tegra platforms by
including only the required CPU files.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

A new config, ENABLE_NS_L2_CPUECTRL_RW_ACCESS, allows Tegra platforms to
enable read/write access to the L2 and CPUECTRL registers. T210 is the
only platform that needs to enable this config for now.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch locks access to the PMC registers which hold the CPU reset
vector addresses. The PMC registers are used by the warmboot code and
must be locked during boot/resume to avoid booting into custom firmware
installed by unknown parties e.g. hackers.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch de-asserts the CPU reset signals for each CPU as
part of it's power on sequence. This is needed to get rid of
the wait in BPMP firmware during SC7 exit.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch implements the get_sys_suspend_power_state() handler required by
the PSCI SYSTEM_SUSPEND API. The intent of this handler is to return the
appropriate State-ID field which can be utilized in `affinst_suspend()` to
suspend to system affinity level.
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>