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At the moment BL31 dynamically discovers the CPU topology of an FPGA
system at runtime, but does not export it to the non-secure world.
Any BL33 user would typically looks at the devicetree to learn about
existing CPUs.

This patch exports a minimum /cpus node in a devicetree to satisfy
the binding. This means that no cpumaps or caches are described.
This could be added later if needed.

An existing /cpus node in the DT will make the code bail out with a
message.
Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I589a2b3412411a3660134bdcef3a65e8200e1d7e

* changes:
  Tegra: common: disable GICC after domain off
  cpus: denver: skip DCO enable/disable for recent SKUs

This patch creates and populates the /cpus node in a device tree
based on the existing topology. It uses the minimum required nodes
and properties to satisfy the binding as specified in
https://www.kernel.org/doc/Documentation/devicetree/bindings/arm/cpus.txt

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I03bf4e9a6427da0a3b8ed013f93d7bc43b5c4df0

* changes:
  Tegra: platform specific BL31_SIZE
  Tegra186: sanity check power state type
  Tegra: fixup CNTPS_TVAL_EL1 delay timer reads
  Tegra: add platform specific 'runtime_setup' handler
  Tegra: remove ENABLE_SVE_FOR_NS = 0
  lib: cpus: denver: add MIDR PN9 variant
  cpus: denver: introduce macro to declare cpu_ops

The the GIC CPU interface should be disabled after cpu off. The
Tegra power management code should mark the connected core as asleep
as part of the CPU off sequence.

This patch disables the GICC after CPU off as a result.
Signed-off-by: anzhou <anzhou@nvidia.com>
Change-Id: Ib1a3d8903f5e6d55bd2ee0c16134dbe2562235ea

DCO is not supported by the SKUs released after MIDR_PN4. This
patch skips enabling or disabling the DCO on these SKUs.

Change-Id: Ic31a829de3ae560314d0fb5c5e867689d4ba243b
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

This patch moves the BL31_SIZE to the Tegra SoC specific
tegra_def.h. This helps newer platforms configure the size of
the memory available for BL31.
Signed-off-by: anzhou <anzhou@nvidia.com>
Change-Id: I43c60b82fa7e43d5b05d87fbe7d673d729380d82

This patch sanity checks the power state type before use,
from the platform's PSCI handler.

Verified with TFTF Standard Test Suite.

Change-Id: Icd45faac6c023d4ce7f3597b698d01b91a218124
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The delay_timer driver for Tegra uses the CNTPS_TVAL_EL1 secure, physical,
decrementing timer as the source. The current logic incorrectly marks this
as an incrementing timer, by negating the timer value.

This patch fixes the anomaly and updates the driver to remove this logic.
Signed-off-by: anzhou <anzhou@nvidia.com>
Change-Id: I60490bdcaf0b66bf4553a6de3f4e4e32109017f4

Tegra SoCs would like the flexibility to perform chip specific actions
before we complete cold boot. This patch introduces a platform specific
'runtime_setup' handler to provide that flexibility.

Change-Id: I13b2489f631f775cae6f92acf51a240cd036ef11
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>

The SVE CPU extension library reads the id_aa64pfr0_el1 register to
check if SVE is enabled. Tegra platforms disabled ENABLE_SVE_FOR_NS for
pre-8.2 platforms, but this flag can safely be enabled now that the
library can enable the feature at runtime.

This patch updates the makefile to remove "ENABLE_SVE_FOR_NS = 0"
as a result.

Change-Id: Ia2a89ac90644f8c0d39b41d321e04458ff6be6e1
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>

This patch introduces support for PN9 variant for some
Denver based platforms.

Original change by: Hemant Nigam <hnigam@nvidia.com>
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>
Change-Id: I331cd3a083721fd1cd1b03f4a11b32fd306a21f3

This patch introduces a macro to declare cpu_op for all Denver
SKUs.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: Ibcf88c3256fc5dcaa1be855749ebd2c5c396c977

* changes:
  Tegra194: remove unused tegra_mc_defs header
  Tegra: memctrl: platform setup handler functions
  Tegra194: memctrl: remove streamid security cfg registers
  Tegra194: memctrl: remove streamid override cfg registers
  Tegra: debug prints indicating SC7 entry sequence completion
  Tegra194: add strict checking mode verification
  Tegra194: memctrl: update TZDRAM base at 1MB granularity
  Tegra194: ras: split up RAS error clear SMC call.
  Tegra: platform specific GIC sources
  Tegra194: add memory barriers during DRAM to SysRAM copy
  Tegra: sip: add VPR resize enabled check
  Tegra194: add redundancy checks for MMIO writes
  Tegra: remove unused cortex_a53.h
  Tegra194: report failure to enable dual execution
  Tegra194: verify firewall settings before resource use

* changes:
  fdts: tc0: add support for cpu-idle-states
  fdts: tc0: Add node for mmc

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I542ec3cf1bb929a5656dda6dbad816b69837c646

In the case of Juno AArch32, platform security configuration
gets done from both BL2 and SP_MIN(BL32) components when
JUNO_AARCH32_EL3_RUNTIME and RESET_TO_SP_MIN build options
are set.
Fix is provided to avoid Platform security configuration from
SP_MIN when it is already done in BL2.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I702e91dacb4cdd2d10e339ddeaea91289bef3229

Updated the cot-binding documentation to add 'id'
property for the trusted and non-trusted nv-counters.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: If1c628c5b90fe403dd96c7cd0cd04f37288c965c

This patch removes the unused header from the Tegra194
platform files. As a result, the TSA MMIO would be
removed from the memory map too.

Change-Id: I2d38b3da7a119f5dfd6cfd429e481f4e6ad3481e
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The driver initially contained the setup steps to help Tegra186
and Tegra194 SoCs. In order to support future SoCs and make sure
that the driver remains generic enough, some code should be moved
to SoC.

This patch creates a setup handler for a platform to implement its
initialization sequence.

Change-Id: I8bab7fd07f25e0457ead8e2d2713efe54782a59b
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The stream ID security configuration settings shall be done by the
previous level bootloader. This change removes the same settings
from the Tegra194 platform code as a result.

Change-Id: Ia170ca4c2119db8f1d0251f1c193add006f81004
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>

The stream ID override configuration is saved during System Suspend
as part MB1 bct. This change removes the same support from the Tegra194
platform code as a result.

Change-Id: I4c19dc0d8b29190908673fb5ed7ed892af8906ab
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>

This patch adds prints to display the completion of System Suspend
programming sequence for Tegra platforms. The console needs to
be kept alive until the very end of the System Suspend sequence as
a result.

Change-Id: I8e0e2054a272665d0a067bb894dda1605a9d2eb7
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

After enabling the strict checking mode, verify that
the strict mode has really been enabled by querying
the MCE.

If the mode is found to be disabled, the code should
assert.

Change-Id: I113ec8decb737f8208059a2a3ba3076fad77890e
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>

The Memory controller expects the TZDRAM base value at 1MB granularity
and the current driver does not respect that limitation. This patch
fixes that anomaly.

Change-Id: I6b72270f331ba5081e19811df4a78623e457341a
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

In order to make sure SMC call is within 25us, this patch reduces number of RAS
errors accessed to 8 at most for each SMC call and takes a input/output
parameter to specify in progress RAS error record index.

The measured SMC call latency is about 20us under Linux test kernel driver.

Change-Id: Ia1b57c8673e0193dc341a36af0b5c09fb48f965f
Signed-off-by: David Pu <dpu@nvidia.com>

The TEGRA_GICv2_SOURCES contains the list of GIC sources required
to compile the GICv2 support for platforms.

This patch includes the TEGRA_GICv2_SOURCES macro from individual
makefiles to allow future platforms to use suport for GICv3.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I429b1a0c7764ab370675f873a50cecda871110cb

This patch adds memory barriers to the trampoline code copying TZDRAM
contents to SysRAM during exit from System Suspend. These barriers
make sure that all the copies go through before we start executing in
SysRAM.

Reported by: Nathan Tuck <ntuck@nvidia.com>

Change-Id: I3fd2964086b6c0e044cc4165051a4801440db9cd
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

The Memory Controller provides a control register to check
if the video memory can be resized. The previous bootloader
might have locked this feature, which will be reflected by
this register.

This patch reads the control register before processing
a video memory resize request. An error code, -ENOTSUP,
is returned if the feature is locked.

Change-Id: Ia1d67f7a94aa15c6b18ff5c9b9b952e179596ae3
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>

MMIO writes should verify that the writes actually went through.
Read the value back after the write operation, perform assert
if the read back value is not same as the write value.

Change-Id: Id2ceb014116f3aa6a9e86505ca1ae9911470a679
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>

This patch removes the unused cortex_a53.h header file from
common Tegra files.

This change fixes the violation of CERTC Rule: DCL23.

Change-Id: Iaf7c34cc6323b78028258e188c00724c52afba85
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

During boot the platform enables dual execution for Xavier CPUs.
This patch reads back the ACTLR_ELx register to verify that the bit
is actually set. It asserts if the bit is not set.

Change-Id: I5ba9491ced86285d307b95efa647a427ff77c79e
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>

The firewall settings for the hardware resources are present in the
Security Configuration Registers. The firewall settings are programmed
by other software components and so must be verified for correctness
before touching the hardware resources they protect.

This patch reads the firewall settings during early boot and asserts
if the settings mismatch.

Change-Id: I53cc9aeadad32e54e460db0fa2c38e46bcc92066
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

Coverity warns about the risk of unintended sign-exension in some of the
calculations in spmi_arb.c. While the actual numbers used are small
enough that this cannot happen in practice, it's still a good idea to
clean them up by explicitly making the constants used unsigned.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ia169e0f7c6b01b8041e8029e8c8d30ee596ba30d