Douglas Raillard [Fri, 24 Feb 2017 18:14:15 +0000 (18:14 +0000)]
Add support for GCC stack protection
Introduce new build option ENABLE_STACK_PROTECTOR. It enables
compilation of all BL images with one of the GCC -fstack-protector-*
options.
A new platform function plat_get_stack_protector_canary() is introduced.
It returns a value that is used to initialize the canary for stack
corruption detection. Returning a random value will prevent an attacker
from predicting the value and greatly increase the effectiveness of the
protection.
A message is printed at the ERROR level when a stack corruption is
detected.
To be effective, the global data must be stored at an address
lower than the base of the stacks. Failure to do so would allow an
attacker to overwrite the canary as part of an attack which would void
the protection.
FVP implementation of plat_get_stack_protector_canary is weak as
there is no real source of entropy on the FVP. It therefore relies on a
timer's value, which could be predictable.
Change-Id: Icaaee96392733b721fa7c86a81d03660d3c1bc06
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
davidcunado-arm [Wed, 29 Mar 2017 16:54:54 +0000 (17:54 +0100)]
Merge pull request #880 from Summer-ARM/sq/tcr-memory-attribution
Add support to change xlat_tables to non-cacheable
davidcunado-arm [Wed, 29 Mar 2017 08:58:20 +0000 (09:58 +0100)]
Merge pull request #870 from douglas-raillard-arm/dr/remove_asm_signed_test
Replace ASM signed tests with unsigned
davidcunado-arm [Tue, 28 Mar 2017 17:15:20 +0000 (18:15 +0100)]
Merge pull request #879 from Summer-ARM/sq/mt-support
ARM platforms: Add support for MT bit in MPIDR
davidcunado-arm [Tue, 28 Mar 2017 16:40:40 +0000 (17:40 +0100)]
Merge pull request #878 from vwadekar/tegra-memctrlv2-coverity-fix
Tegra: memctrl_v2: fix logic to calculate TZRAM_ADDR_HI bits
Summer Qin [Thu, 16 Mar 2017 17:16:34 +0000 (17:16 +0000)]
Add support to change xlat_tables to non-cacheable
This patch adds an additional flag `XLAT_TABLE_NC` which marks the
translation tables as Non-cacheable for MMU accesses.
Change-Id: I7c28ab87f0ce67da237fadc3627beb6792860fd4
Signed-off-by: Summer Qin <summer.qin@arm.com>
Varun Wadekar [Tue, 26 Apr 2016 18:14:46 +0000 (11:14 -0700)]
Tegra: memctrl_v2: fix logic to calculate TZRAM_ADDR_HI bits
This patch fixes the logic to calculate the higher bits for TZRAM's base/end
addresses.
Fixes coverity error "31853: Wrong operator used (CONSTANT_EXPRESSION_RESULT)"
Change-Id: Iff62ef18cba59cd41ad63a5c71664872728356a8
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Summer Qin [Tue, 28 Feb 2017 16:46:17 +0000 (16:46 +0000)]
ARM platforms: Add support for MT bit in MPIDR
This patch modifies some of the functions in ARM platform layer to cater
for the case when multi-threading `MT` is set in MPIDR. A new build flag
`ARM_PLAT_MT` is added, and when enabled, the functions accessing MPIDR
now assume that the `MT` bit is set for the platform and access the bit
fields accordingly.
Also, a new API plat_arm_get_cpu_pe_count is added when `ARM_PLAT_MT` is
enabled, returning the PE count within the physical cpu corresponding to
`mpidr`.
Change-Id: I04ccf212ac3054a60882761f4087bae299af13cb
Signed-off-by: Summer Qin <summer.qin@arm.com>
davidcunado-arm [Mon, 27 Mar 2017 10:44:05 +0000 (11:44 +0100)]
Merge pull request #873 from dp-arm/dp/makefile-reorg
Move plat/common source file definitions to generic Makefiles
davidcunado-arm [Fri, 24 Mar 2017 22:53:50 +0000 (22:53 +0000)]
Merge pull request #872 from dp-arm/dp/fix-typo
firmware-design: Fix typo in ToC header flags specification
davidcunado-arm [Thu, 23 Mar 2017 14:03:09 +0000 (14:03 +0000)]
Merge pull request #865 from vwadekar/tegra186-platform-support-v1
Tegra186 platform support v1
Varun Wadekar [Thu, 3 Mar 2016 21:52:52 +0000 (13:52 -0800)]
Tegra186: implement support for System Suspend
This patch adds the chip level support for System Suspend entry
and exit. As part of the entry sequence we first query the MCE
firmware to check if it is safe to enter system suspend. Once
we get a green light, we save hardware block settings and enter
the power state. As expected, all the hardware settings are
restored once we exit the power state.
Change-Id: I6d192d7568d6a555eb10efdfd45f6d79c20f74ea
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 3 Mar 2016 21:22:39 +0000 (13:22 -0800)]
Tegra186: memctrl_v2: restore video memory settings
The memory controller loses its settings when the device enters system
suspend state.
This patch adds a handler to restore the Video Memory settings in the
memory controller, which would be called after exiting the system suspend
state.
Change-Id: I1ac12426d7290ac1452983d3c9e05fabbf3327fa
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 3 Mar 2016 21:09:08 +0000 (13:09 -0800)]
Tegra186: smmu: driver for the smmu hardware block
This patch adds a device driver for the SMMU hardware block on
Tegra186 SoCs. We use the generic ARM SMMU-500 IP block on
Tegra186. The driver only supports saving the SMMU settings
before entering system suspend. The MC driver and the NS world
clients take care of programming their own settings.
Change-Id: Iab5a90310ee10f6bc8745451ce50952ab3de7188
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Douglas Raillard [Mon, 20 Mar 2017 10:38:29 +0000 (10:38 +0000)]
Tegra: replace ASM signed tests with unsigned
Replace the occurrences of signed condition codes where it was
unnecessary by an unsigned test as the unsigned tests allow the full
range of unsigned values to be used without inverting the result with
some large operands.
This reverts commit
ee2c909947e0a9c4a2562689a7bfc863bc4794f9.
Change-Id: Ibaa5e8dfae6ad65bada3cda5f683d181fee37e53
Acked-by: Varun Wadekar <vwadekar@nvidia.com>
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
Varun Wadekar [Mon, 29 Feb 2016 18:24:30 +0000 (10:24 -0800)]
Tegra186: implement quasi power off (SC8) state
This patch adds support for the SC8 system power off state. This
state keeps the sensor subsystem powered ON while powering down
the remaining parts of the SoC. The CPUs and DRAM are powered down
as part of this state entry and perform a cold boot when exiting SC8.
Change-Id: Iba65c661a7fe077a0d696f114bab3b4595e19a0d
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Fri, 26 Feb 2016 19:09:21 +0000 (11:09 -0800)]
Tegra186: disable DCO operations for PSCI_CPU_OFF
This patch disables the DCO operations when we turn OFF a
CPU. DCO operations are still ON when a CPU enters a power
down suspend state.
Change-Id: I954a800209ffcc9ab43a77f04040608cbbbd9055
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 29 Dec 2015 02:12:59 +0000 (18:12 -0800)]
Tegra186: register FIQ interrupt sources
This patch registers all the FIQ interrupt sources during platform
setup. Currently we support AON and TOP watchdog timer interrupts.
Change-Id: Ibccd866f00d6b08b574f765538525f95b49c5549
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 17 Feb 2016 23:31:25 +0000 (15:31 -0800)]
Tegra: memctrl_v2: set NO_OVERRIDE for APE clients
For all APE clients (APER, APEW, APEDMAR, APEDMAW) set NO_OVERRIDE
for MC_SID_CFG as ACAST/ADAST will be setup with the required SIDs
ie. 0x7F & 0x1E.
Original change by Nitin Kumbhar <nkumbhar@nvidia.com>
Change-Id: Idec981b3537cc95dac6ec37cdaa38bc45b16d232
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 17 Feb 2016 23:07:49 +0000 (15:07 -0800)]
Tegra: memctrl_v2: implement MC txn override WAR
This patch sets the Memory Controller's TXN_OVERRIDE registers
for most write clients to CGID_ADR. This ensures ordering is maintained.
In some cases WAW ordering problems could occur. There are different
settings for Tegra version A01 v A02.
Original changes by Alex Waterman <alexw@nvidia.com>
Change-Id: I82ea02afa43a24250ed56985757b83e78e71178c
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 17 Feb 2016 18:10:50 +0000 (10:10 -0800)]
Tegra: memctrl_v2: check GPU state before VPR programming
The GPU is the real consumer of the video protected memory region
and it needs to be in reset to pick up the new region.
This patch checks if the GPU is in reset before we program the new
video protected memory region settings.
Change-Id: I44f553bfcf07b1975abad53b245954be966c8aeb
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 17 Feb 2016 18:01:28 +0000 (10:01 -0800)]
Tegra: memctrl_v2: no SID override for SCE block
This patch fixes the incorrect override settings for the SCE
hardware block.
Original change by Pekka Pessi <ppessi@nvidia.com>
Change-Id: I33db55d6004331988b52ca70157aab1409f4829f
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 9 Feb 2016 22:55:44 +0000 (14:55 -0800)]
Tegra186: fix per-cpu wake times for CPU power states
This patch fixes the logic used to calculate the CPU index for
storing the per-cpu wake times. We use the MIDR register to
calculate the CPU index now. This allows us to store values for
Denver/A57 CPUs properly.
Change-Id: I9df0377afd4b92bbdaea495c0df06a9780a99d09
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 3 Feb 2016 17:51:25 +0000 (09:51 -0800)]
Tegra186: add Video memory carveout settings
This patch supports the TEGRA_SIP_NEW_VIDEOMEM_REGION SiP call to
program new video memory carveout settings from the NS world.
Change-Id: If9ed818fe71e6cb7461f225090105a4d8883b7a2
Signed-off-by: Wayne Lin <wlin@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 19 Jan 2016 03:03:19 +0000 (19:03 -0800)]
Tegra186: support for C6/C7 CPU_SUSPEND states
This patch adds support for the C6 and C7 CPU_SUSPEND states. C6 is
an idle state while C7 is a powerdown state.
The MCE block takes care of the entry/exit to/from these core power
states and hence we call the corresponding MCE handler to process
these requests. The NS driver passes the tentative time that the
core is expected to stay in this state as part of the power_state
parameter, which we store in a per-cpu array and pass it to the
MCE block.
Change-Id: I152acb11ab93d91fb866da2129b1795843dfa39b
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 30 Dec 2015 23:15:08 +0000 (15:15 -0800)]
Tegra: memctrl_v2: secure the on-chip TZSRAM memory
This patch programs the Memory controller's control registers
to disable non-secure accesses to the TZRAM. In case these
registers are already programmed by the BL2/BL30, then the
driver just bails out.
Change-Id: Ia1416988050e3d067296373060c717a260499122
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Sat, 9 Jan 2016 01:38:51 +0000 (17:38 -0800)]
Tegra186: support for the latest platform port handlers
This patch adds support for the newer platform handler functions. Commit
I6db74b020b141048b6b8c03e1bef7ed8f72fd75b merges the upstream code which
has already moved all the upstream supported platforms over to these
handler functions.
Change-Id: I621eff038f3c0dc1b90793edcd4dd7c71b196045
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 7 Jan 2016 22:36:12 +0000 (14:36 -0800)]
Tegra186: implement prepare_system_reset handler
This patch implements the 'prepare_system_reset' handler to
issue the 'system reset' command to the MCE.
Change-Id: I83d8d0b4167aac5963d640fe77d5754dc7ef05b1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 5 Jan 2016 23:17:41 +0000 (15:17 -0800)]
Tegra186: implement CPU_OFF handler
This patch implements the CPU_OFF handler for powering down
a CPU using the MCE driver.
Change-Id: I8d455005d0b547cc61cc7778bfe9eb84b7e5480c
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 4 Jan 2016 18:57:45 +0000 (10:57 -0800)]
Tegra186: update SYSCNT_FREQ to 31.25MHz
The System Counter Frequency has been updated to 31.25MHz after
some experiments as the previous value was too high.
Change-Id: I79986ee1c0c88700a3a2b1dbff2d3f00c0c412b9
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 30 Nov 2015 20:05:04 +0000 (12:05 -0800)]
Tegra186: relocate bl31.bin to the SYSRAM
Tegra186 has an on-die, 320KB, "System RAM" memory. Out of the total
size, 256KB are allocated for the CPU TrustZone binaries - EL3 monitor
and Trusted OS.
This patch changes the base address for bl31.bin to the SysRAM base
address. The carveout is too small for the Trusted OS, so we relocate
only the monitor binary.
Change-Id: Ib4b667ff2a7a619589851338f9d0bfb02078c575
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 14 Mar 2017 21:25:35 +0000 (14:25 -0700)]
Tegra186: implement prepare_system_off handler
This patch issues the 'System Off' ARI to power off the entire
system from the 'prepare_system_off' handler.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 14 Sep 2015 04:01:39 +0000 (09:31 +0530)]
Tegra186: power on/off secondary CPUs
This patch add code to power on/off the secondary CPUs on the Tegra186
chip. The MCE block is the actual hardware that takes care of the
power on/off sequence. We pass the constructed CPU #, depending on the
MIDR_IMPL field, to the MCE CPU handlers.
This patch also programs the reset vector addresses to allow the
CPUs to power on through the monitor and then jump to the linux
world.
Change-Id: Idc164586cda91c2009d66f3e09bf4464de9662db
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 9 Sep 2015 06:03:08 +0000 (11:33 +0530)]
Tegra186: SiP calls to interact with the MCE driver
This patch adds the new SiP SMC calls to allow the NS world to
interact with the MCE hardware block on Tegra186 chips.
Change-Id: I79c6b9f76d68a87abd57a940613ec070562d2eac
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 14 Mar 2017 21:24:35 +0000 (14:24 -0700)]
Tegra186: mce: driver for the CPU complex power manager block
The CPU Complex (CCPLEX) Power Manager (Denver MCE, or DMCE) is an
offload engine for BPMP to do voltage related sequencing and for
hardware requests to be handled in a better latency than BPMP-firmware.
There are two interfaces to the MCEs - Abstract Request Interface (ARI)
and the traditional NVGINDEX/NVGDATA interface.
MCE supports various commands which can be used by CPUs - ARM as well
as Denver, for power management and reset functionality. Since the
linux kernel is the master for all these scenarios, each MCE command
can be issued by a corresponding SMC. These SMCs have been moved to
SiP SMC space as they are specific to the Tegra186 SoC.
Change-Id: I67bee83d2289a8ab63bc5556e5744e5043803e51
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 25 Aug 2015 11:33:14 +0000 (17:03 +0530)]
Tegra186: platform support for Tegra "T186" SoC
Tegra186 is the newest SoC in the Tegra family which consists
of two CPU clusters - Denver and A57. The Denver cluster hosts
two next gen Denver15 CPUs while the A57 cluster hosts four ARM
Cortex-A57 CPUs. Unlike previous Tegra generations, all the six
cores on this SoC would be available to the system at the same
time and individual clusters can be powered down to conserve
power.
Change-Id: Id0c9919dbf5186d2938603e0b11e821b5892985e
Signed-off-by: Wayne Lin <wlin@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Sun, 20 Sep 2015 09:38:22 +0000 (15:08 +0530)]
Tegra: memctrl_v2: Memory Controller Driver (v2)
This patch adds driver for the Memory Controller (v2) in the newer
Tegra SoCs. The newer hardware uses ARM's SMMU hardware instead of
the proprietary block in the past.
Change-Id: I78359da780dc840213b6e99954e45e34428d4fff
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Fri, 10 Mar 2017 17:53:37 +0000 (09:53 -0800)]
Tegra: public interfaces to get the chip's major/minor versions
This patch opens up the interfaces to read the chip's major/minor versions
for all Tegra drivers to use.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
dp-arm [Tue, 7 Mar 2017 11:02:47 +0000 (11:02 +0000)]
Move plat/common source file definitions to generic Makefiles
These source file definitions should be defined in generic
Makefiles so that all platforms can benefit. Ensure that the
symbols are properly marked as weak so they can be overridden
by platforms.
NOTE: This change is a potential compatibility break for
non-upstream platforms.
Change-Id: I7b892efa9f2d6d216931360dc6c436e1d10cffed
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
dp-arm [Thu, 16 Mar 2017 09:31:35 +0000 (09:31 +0000)]
firmware-design: Fix typo in ToC header flags specification
Fixes ARM-software/tf-issues#463
Change-Id: I73e0c5fbd87004953df8b1fa19319ad562ecc867
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
davidcunado-arm [Mon, 20 Mar 2017 12:25:08 +0000 (12:25 +0000)]
Merge pull request #857 from Andre-ARM/a53-855873
ARM Cortex-A53 erratum 855873 workaround
Andre Przywara [Mon, 7 Nov 2016 10:53:14 +0000 (10:53 +0000)]
plat/tegra: Enable Cortex-A53 erratum 855873 workaround
The NVidia Tegra 210 SoC contains Cortex-A53 CPUs which are affected by
erratum 855873.
Enable the workaround that TF provides to fix this erratum.
Change-Id: I6cef4ac60ae745e9ce299ee22c93b9d2c4f6c5f2
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Mon, 7 Nov 2016 10:53:14 +0000 (10:53 +0000)]
plat/mediatek: Enable Cortex-A53 erratum 855873 workaround
The Mediatek 8173 SoC contains Cortex-A53 CPUs which are affected by
erratum 855873.
Enable the workaround that TF provides to fix this erratum.
Change-Id: I6e1c7822c320d81bdd46b8942d1d755883dac1f5
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Thu, 6 Oct 2016 15:54:53 +0000 (16:54 +0100)]
Add workaround for ARM Cortex-A53 erratum 855873
ARM erratum 855873 applies to all Cortex-A53 CPUs.
The recommended workaround is to promote "data cache clean"
instructions to "data cache clean and invalidate" instructions.
For core revisions of r0p3 and later this can be done by setting a bit
in the CPUACTLR_EL1 register, so that hardware takes care of the promotion.
As CPUACTLR_EL1 is both IMPLEMENTATION DEFINED and can be trapped to EL3,
we set the bit in firmware.
Also we dump this register upon crashing to provide more debug
information.
Enable the workaround for the Juno boards.
Change-Id: I3840114291958a406574ab6c49b01a9d9847fec8
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Douglas Raillard [Tue, 7 Mar 2017 16:36:14 +0000 (16:36 +0000)]
Replace ASM signed tests with unsigned
ge, lt, gt and le condition codes in assembly provide a signed test
whereas hs, lo, hi and ls provide the unsigned counterpart. Signed tests
should only be used when strictly necessary, as using them on logically
unsigned values can lead to inverting the test for high enough values.
All offsets, addresses and usually counters are actually unsigned
values, and should be tested as such.
Replace the occurrences of signed condition codes where it was
unnecessary by an unsigned test as the unsigned tests allow the full
range of unsigned values to be used without inverting the result with
some large operands.
Change-Id: I58b7e98d03e3a4476dfb45230311f296d224980a
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
davidcunado-arm [Sat, 18 Mar 2017 12:16:27 +0000 (12:16 +0000)]
Merge pull request #861 from soby-mathew/sm/aarch32_fixes
Misc AArch32 fixes
davidcunado-arm [Fri, 17 Mar 2017 13:31:05 +0000 (13:31 +0000)]
Merge pull request #858 from soby-mathew/sm/gic_driver_data_fix
Flush the GIC driver data after init
davidcunado-arm [Fri, 17 Mar 2017 12:34:37 +0000 (12:34 +0000)]
Merge pull request #860 from jeenu-arm/hw-asstd-coh
Patches for platforms with hardware-assisted coherency
davidcunado-arm [Thu, 16 Mar 2017 12:42:32 +0000 (12:42 +0000)]
Merge pull request #856 from antonio-nino-diaz-arm/an/dynamic-xlat
Introduce version 2 of the translation tables library
davidcunado-arm [Fri, 10 Mar 2017 13:21:09 +0000 (14:21 +0100)]
Merge pull request #864 from vwadekar/enable-errata-tegra210
Tegra210: enable errata for Cortex-A57 and Cortex-A53 CPUs
davidcunado-arm [Thu, 9 Mar 2017 09:39:00 +0000 (10:39 +0100)]
Merge pull request #862 from vwadekar/spd-trusty-tlkd-changes
SPD changes for Trusty and TLKD
Antonio Nino Diaz [Thu, 23 Feb 2017 17:22:58 +0000 (17:22 +0000)]
ARM platforms: Enable xlat tables lib v2
Modify ARM common makefile to use version 2 of the translation tables
library and include the new header in C files.
Simplify header dependencies related to this library to simplify the
change.
The following table contains information about the size increase in
bytes for BL1 after applying this patch. The code has been compiled for
different configurations of FVP in AArch64 mode with compiler GCC 4.9.3
20150413. The sizes have been calculated with the output of `nm` by
adding the size of all regions and comparing the total size before and
after the change. They are sumarized in the table below:
text bss data total
Release +660 -20 +88 +728
Debug +740 -20 +242 +962
Debug (LOG_LEVEL=50) +1120 -20 +317 +1417
Change-Id: I539e307f158ab71e3a8b771640001fc1bf431b29
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Antonio Nino Diaz [Fri, 24 Feb 2017 11:39:22 +0000 (11:39 +0000)]
Apply workaround for errata 813419 of Cortex-A57
TLBI instructions for EL3 won't have the desired effect under specific
circumstances in Cortex-A57 r0p0. The workaround is to execute DSB and
TLBI twice each time.
Even though this errata is only needed in r0p0, the current errata
framework is not prepared to apply run-time workarounds. The current one
is always applied if compiled in, regardless of the CPU or its revision.
This errata has been enabled for Juno.
The `DSB` instruction used when initializing the translation tables has
been changed to `DSB ISH` as an optimization and to be consistent with
the barriers used for the workaround.
Change-Id: Ifc1d70b79cb5e0d87e90d88d376a59385667d338
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Antonio Nino Diaz [Mon, 27 Feb 2017 17:23:54 +0000 (17:23 +0000)]
Add dynamic region support to xlat tables lib v2
Added APIs to add and remove regions to the translation tables
dynamically while the MMU is enabled. Only static regions are allowed
to overlap other static ones (for backwards compatibility).
A new private attribute (MT_DYNAMIC / MT_STATIC) has been added to
flag each region as such.
The dynamic mapping functionality can be enabled or disabled when
compiling by setting the build option PLAT_XLAT_TABLES_DYNAMIC to 1
or 0. This can be done per-image.
TLB maintenance code during dynamic table mapping and unmapping has
also been added.
Fixes ARM-software/tf-issues#310
Change-Id: I19e8992005c4292297a382824394490c5387aa3b
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Antonio Nino Diaz [Mon, 13 Feb 2017 11:35:49 +0000 (11:35 +0000)]
Improve debug output of the translation tables
The printed output has been improved in two ways:
- Whenever multiple invalid descriptors are found, only the first one
is printed, and a line is added to inform about how many descriptors
have been omitted.
- At the beginning of each line there is an indication of the table
level the entry belongs to. Example of the new output:
`[LV3] VA:0x1000 PA:0x1000 size:0x1000 MEM-RO-S-EXEC`
Change-Id: Ib6f1cd8dbd449452f09258f4108241eb11f8d445
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Antonio Nino Diaz [Mon, 20 Feb 2017 14:22:22 +0000 (14:22 +0000)]
Simplify translation tables headers dependencies
The files affected by this patch don't really depend on `xlat_tables.h`.
By changing the included file it becomes easier to switch between the
two versions of the translation tables library.
Change-Id: Idae9171c490e0865cb55883b19eaf942457c4ccc
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Antonio Nino Diaz [Wed, 8 Mar 2017 14:40:23 +0000 (14:40 +0000)]
Add version 2 of xlat tables library
The folder lib/xlat_tables_v2 has been created to store a new version
of the translation tables library for further modifications in patches
to follow. At the moment it only contains a basic implementation that
supports static regions.
This library allows different translation tables to be modified by
using different 'contexts'. For now, the implementation defaults to
the translation tables used by the current image, but it is possible
to modify other tables than the ones in use.
Added a new API to print debug information for the current state of
the translation tables, rather than printing the information while
the tables are being created. This allows subsequent debug printing
of the xlat tables after they have been changed, which will be useful
when dynamic regions are implemented in a patch to follow.
The common definitions stored in `xlat_tables.h` header have been moved
to a new file common to both versions, `xlat_tables_defs.h`.
All headers related to the translation tables library have been moved to
a the subfolder `xlat_tables`.
Change-Id: Ia55962c33e0b781831d43a548e505206dffc5ea9
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Varun Wadekar [Mon, 6 Mar 2017 17:15:15 +0000 (09:15 -0800)]
Tegra210: enable errata for Cortex-A57 and Cortex-A53 CPUs
This patch enables the following erratas for the Tegra210 SoC:
* Cortex-A57
=============
- A57_DISABLE_NON_TEMPORAL_HINT
- ERRATA_A57_826974
- ERRATA_A57_826977
- ERRATA_A57_828024
- ERRATA_A57_829520
- ERRATA_A57_833471
* Cortex-A53
=============
- A53_DISABLE_NON_TEMPORAL_HINT
- ERRATA_A53_826319
- ERRATA_A53_836870
Tegra210 uses Cortex-A57 revision: r1p1 and Cortex-A53 revision: r0p2.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
davidcunado-arm [Tue, 7 Mar 2017 13:44:44 +0000 (14:44 +0100)]
Merge pull request #852 from dp-arm/dp/fiptool-embed-image
fiptool: Embed a pointer to an image within the image descriptor
Varun Wadekar [Thu, 23 Feb 2017 18:34:06 +0000 (10:34 -0800)]
spd: trusty: support for AARCH64 mode
This patch removes support for running Trusty in the AARCH32 mode as
all platforms use it in only AARCH64 mode.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Fri, 17 Feb 2017 02:14:37 +0000 (18:14 -0800)]
spd: trusty: save context starting from the stack end
This patch uses the stack end to start saving the CPU context
during world switch. The previous logic, used the stack start
to save the context, thus overwriting the other members of the
context.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 29 Sep 2016 23:08:16 +0000 (16:08 -0700)]
spd: trusty: add SET_ROT_PARAMS handling
If Trusty is not running on the device, then Verified Boot is
not supported and the NS layer will fail gracefully later during
boot. This patch just returns success for the case when Trusty is
not running on the device and the bootloader issues SET_ROT_PARAMS
call during boot, so that we can at least boot non-Android images.
Change-Id: I40fc249983df80fb8cc5be5e4ce94c99d5b5f17d
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 8 Jun 2016 04:21:59 +0000 (21:21 -0700)]
tlkd: execute standard SMC calls on the boot CPU
This patch checks if standard SMC calls, meant for TLK, are issued
only on the boot CPU. TLK is UP Trusted OS stack and so we need this
check to avoid the NS world calling into TLK from any other CPU.
The previous check tied TLK to CPU0, but the boot CPU can be other
than CPU0 in some scenarios.
Change-Id: I75eaafa32471ce19e9920433c2f97b6b5fc02d86
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Wayne Lin [Tue, 24 May 2016 22:28:42 +0000 (15:28 -0700)]
spd: trusty: pass boot params to the Trusted OS
This patch passes the boot parameters, provided by the previous
bootloader, to the Trusted OS via X0, X1 and X2.
Original change by: Wayne Lin <wlin@nvidia.com>
Change-Id: I2039612a8a8226158babfd505ce8c31c4212319c
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Anthony Zhou [Wed, 20 Apr 2016 02:16:48 +0000 (10:16 +0800)]
spd: trusty: only process one function ID at a time
In multi-guest trusty environment, all guest's SMCs will be
forwarded to Trusty. This change only allows 1 guest's SMC
to be forwarded at a time and returns 'busy' status to all
other requests.
Change-Id: I2144467d11e3680e28ec816adeec2766bca114d4
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Anthony Zhou [Fri, 30 Oct 2015 22:03:41 +0000 (06:03 +0800)]
spd: trusty: pass VMID via X7
According to the ARM DEN0028A spec, hypervisor ID(VMID) should be stored
in x7 (or w7). This patch gets this value from the context and passes it
to Trusty. In order to do so, introduce new macros to pass five to eight
parameters to the Trusted OS.
Change-Id: I101cf45d0712e1e880466b2274f9a48af755c9fa
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
davidcunado-arm [Sat, 4 Mar 2017 00:56:46 +0000 (00:56 +0000)]
Merge pull request #863 from vwadekar/tegra-changes-from-downstream-v4
Tegra changes from downstream v4
davidcunado-arm [Fri, 3 Mar 2017 23:29:01 +0000 (23:29 +0000)]
Merge pull request #854 from rockchip-linux/pm_plat
rockchip: plat_pm.c: Change callbacks implement for our SOCs.
Varun Wadekar [Tue, 28 Feb 2017 16:23:59 +0000 (08:23 -0800)]
Tegra: enable SEPARATE_CODE_AND_RODATA build flag
This patch enables the SEPARATE_CODE_AND_RODATA build flag for all
Tegra platforms, to allow setting proper MMU attributes for the RO
data and the code.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
tony.xie [Fri, 3 Mar 2017 08:22:12 +0000 (16:22 +0800)]
rockchip: Change the callback implement of power domain for rk3368
Change-Id: I6d39b4cac9b34b1f841e9bbddaf9c49785ba0c5e
Signed-off-by: tony.xie <tony.xie@rock-chips.com>
Harvey Hsieh [Wed, 28 Dec 2016 13:53:18 +0000 (21:53 +0800)]
Tegra210: assert if afflvl0/1 have incorrect state-ids
The linux kernel v3.10 does not use System Suspend function ID, whereas
v4.4 uses it. This means affinity levels 0/1 will have different state id
values during System Suspend entry. This patch updates the assert criteria
to check both the state id values.
Change-Id: I07fcaf99501cc9622e40d0a2c1eb4a4a160be10a
Signed-off-by: Harvey Hsieh <hhsieh@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Harvey Hsieh [Tue, 11 Oct 2016 10:59:52 +0000 (18:59 +0800)]
Tegra: SiP: 64-bit address for Video Memory base
This patch allows the NS world to pass 64-bit base address for
the Video Memory carveout region.
Change-Id: I7e47cc1f5425bd39c6763755b801517013e1e0cd
Signed-off-by: Harvey Hsieh <hhsieh@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Steven Kao [Thu, 24 Nov 2016 11:24:37 +0000 (19:24 +0800)]
Tegra: increase ADDR_SPACE_SIZE to 35 bits
This patch increases the ADDR_SPACE_SIZE macro (virtual address)
to 35 bits, to support max memory of 32G, for all Tegra platforms.
Change-Id: I8e6861601d3a667d7428988c7596b0adebfa0548
Signed-off-by: Steven kao <skao@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Damon Duan [Mon, 7 Nov 2016 11:37:50 +0000 (19:37 +0800)]
Tegra: init the console only if the platform supports it
Some platforms might want to keep the uart console disabled
during boot. This patch checks if the platform supports a
console, before calling console_init().
Change-Id: Icc9c59cb979d91fd0a72e4732403b3284bdd2dfc
Signed-off-by: Damon Duan <danield@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 1 Sep 2016 21:59:32 +0000 (14:59 -0700)]
Tegra210: new TZDRAM base address
This patch modifies the TZDRAM base address to the new aperture
allocated by the bootloader.
Change-Id: Id158d15b1ec9aa681136d258e90fbba930aebf92
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 1 Sep 2016 21:56:17 +0000 (14:56 -0700)]
Tegra210: set core power state during cluster power down
This patch sets the core power state during cluster power down,
so that the 'get_target_pwr_state' handler can calculate the
proper states for all the affinity levels.
Change-Id: If4adb001011208916427ee1623c6c923bed99985
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 1 Sep 2016 21:51:59 +0000 (14:51 -0700)]
Tegra: calculate proper power state for affinity levels
This patch fixes the 'tegra_soc_get_target_pwr_state' handler used to
calculate the proper state for each of the affinity levels.
Change-Id: Id16bd15b96f0fc633ffeac2d7a390592fbd0454b
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 23 Aug 2016 21:01:19 +0000 (14:01 -0700)]
Tegra: fix logic to calculate GICD_ISPENDR register address
This patch uses GICD_BASE to calculate the GICD_ISPENDR regsiter address
in the platform's 'plat_crash_print_regs' routine.
Reported by: Seth Eatinger <seatinger@nvidia.com>
Change-Id: Ic7be29abc781f475ad25b59582ae60a0a2497377
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Tue, 2 Aug 2016 05:16:21 +0000 (22:16 -0700)]
Tegra: uninit and re-init console across System Suspend
This patch removes the console_init() from runtime_setup() as we already
initialize it earlier and disables/enables it across "System Suspend".
Change-Id: I992d3ca56ff4797faf83e8d7fa52c0ef3e1c3367
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Wed, 20 Jul 2016 17:28:51 +0000 (10:28 -0700)]
Tegra: support for silicon/simulation platforms
This patch adds support to identify the underlying platform
on which we are running. The currently supported platforms
are actual silicon and simulation platforms.
Change-Id: Iadf96e79ec663b3dbd1a18e9bb95ffcdb82fc8af
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
danh-arm [Thu, 2 Mar 2017 17:03:12 +0000 (17:03 +0000)]
Merge pull request #859 from Summer-ARM/sq/update-doc
Update LOAD_IMAGE_V2 user guide documentation
Soby Mathew [Tue, 14 Feb 2017 10:21:55 +0000 (10:21 +0000)]
AArch32: Enable override of plat_set_my_stack/plat_get_my_stack
This patch makes the default MP definitions of plat_get_my_stack()
and plat_set_my_stack() as weak so that they can be overridden by
the AArch32 Secure Payload if it requires.
Change-Id: I3b6ddff5750443a776505e3023ff2934227592b6
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Soby Mathew [Tue, 28 Feb 2017 22:58:29 +0000 (22:58 +0000)]
AArch32: Fix conditional inclusion of bakery_locks
Due to incorrect conditional compilation checks, bakery locks were
excluded from the CCN driver and the power controller driver for FVP
when BL32 was built as the EL3 Runtime Software in AArch32 mode.
This patch corrects the same.
Change-Id: Ib1f163d9167a5c38e4d622232c4835cad9c235aa
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Soby Mathew [Tue, 14 Feb 2017 10:16:18 +0000 (10:16 +0000)]
AArch32: Fix normal memory bakery compilation
This patch fixes a compilation issue with bakery locks when
PSCI library is compiled with USE_COHERENT_MEM = 0 build option.
Change-Id: Ic7f6cf9f2bb37f8a946eafbee9cbc3bf0dc7e900
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
davidcunado-arm [Thu, 2 Mar 2017 15:27:33 +0000 (15:27 +0000)]
Merge pull request #853 from vwadekar/tegra-changes-from-downstream-v3
Tegra changes from downstream v3
Jeenu Viswambharan [Thu, 5 Jan 2017 11:01:02 +0000 (11:01 +0000)]
PSCI: Optimize call paths if all participants are cache-coherent
The current PSCI implementation can apply certain optimizations upon the
assumption that all PSCI participants are cache-coherent.
- Skip performing cache maintenance during power-up.
- Skip performing cache maintenance during power-down:
At present, on the power-down path, CPU driver disables caches and
MMU, and performs cache maintenance in preparation for powering down
the CPU. This means that PSCI must perform additional cache
maintenance on the extant stack for correct functioning.
If all participating CPUs are cache-coherent, CPU driver would
neither disable MMU nor perform cache maintenance. The CPU being
powered down, therefore, remain cache-coherent throughout all PSCI
call paths. This in turn means that PSCI cache maintenance
operations are not required during power down.
- Choose spin locks instead of bakery locks:
The current PSCI implementation must synchronize both cache-coherent
and non-cache-coherent participants. Mutual exclusion primitives are
not guaranteed to function on non-coherent memory. For this reason,
the current PSCI implementation had to resort to bakery locks.
If all participants are cache-coherent, the implementation can
enable MMU and data caches early, and substitute bakery locks for
spin locks. Spin locks make use of architectural mutual exclusion
primitives, and are lighter and faster.
The optimizations are applied when HW_ASSISTED_COHERENCY build option is
enabled, as it's expected that all PSCI participants are cache-coherent
in those systems.
Change-Id: Iac51c3ed318ea7e2120f6b6a46fd2db2eae46ede
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Jeenu Viswambharan [Fri, 6 Jan 2017 14:58:11 +0000 (14:58 +0000)]
PSCI: Introduce cache and barrier wrappers
The PSCI implementation performs cache maintenance operations on its
data structures to ensure their visibility to both cache-coherent and
non-cache-coherent participants. These cache maintenance operations
can be skipped if all PSCI participants are cache-coherent. When
HW_ASSISTED_COHERENCY build option is enabled, we assume PSCI
participants are cache-coherent.
For usage abstraction, this patch introduces wrappers for PSCI cache
maintenance and barrier operations used for state coordination: they are
effectively NOPs when HW_ASSISTED_COHERENCY is enabled, but are
applied otherwise.
Also refactor local state usage and associated cache operations to make
it clearer.
Change-Id: I77f17a90cba41085b7188c1345fe5731c99fad87
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Jeenu Viswambharan [Fri, 6 Jan 2017 16:14:42 +0000 (16:14 +0000)]
Disallow using coherent memory with hardware-assisted coherency
ARM Trusted Firmware keeps certain data structures in a memory region
with non-cacheable attributes (termed as "coherent memory") to keep data
coherent with observers that are cache-coherent, and those not. These
data structures pertain to power management and mutual exclusion. Using
coherent memory also costs at least an additional page to map memory
with special memory attributes.
On systems with hardware-assisted coherency, all CPUs that participate
in power management and mutual exclusion are cache-coherent, obviating
the need for special memory attributes for such data structures.
Instead, they can be placed in normal memory, along with rest of data.
On systems with hardware-assisted coherency, where build option
HW_ASSISTED_COHERENCY will be set, also having USE_COHERENT_MEMORY
enabled only wastes a page of memory without any
benefit. Therefore, with HW_ASSISTED_COHERENCY set to 1, require that
USE_COHERENT_MEMORY is explicitly set to 0.
Change-Id: I5101657ae6b1a46278069f23e2d88ee5cbd98efa
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Jeenu Viswambharan [Thu, 5 Jan 2017 10:37:21 +0000 (10:37 +0000)]
Enable data caches early with hardware-assisted coherency
At present, warm-booted CPUs keep their caches disabled when enabling
MMU, and remains so until they enter coherency later.
On systems with hardware-assisted coherency, for which
HW_ASSISTED_COHERENCY build flag would be enabled, warm-booted CPUs can
have both caches and MMU enabled at once.
Change-Id: Icb0adb026e01aecf34beadf49c88faa9dd368327
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Jeenu Viswambharan [Wed, 4 Jan 2017 13:51:42 +0000 (13:51 +0000)]
build: Define build option for hardware-assisted coherency
The boolean build option HW_ASSISTED_COHERENCY is introduced to enable
various optimizations in ARM Trusted Software, when built for such
systems. It's set to 0 by default.
Change-Id: I638390da6e1718fe024dcf5b402e07084f1eb014
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Summer Qin [Wed, 22 Feb 2017 14:04:15 +0000 (14:04 +0000)]
Update LOAD_IMAGE_V2 user guide documentation
Now the TRUSTED_BOARD_BOOT is supported for AArch64 when LOAD_IMAGE_V2
is enabled. This patch updates the user-guide.md documentation for the
same.
Change-Id: I97de07435c81258c2a5f41a30a69736863a10bd1
Signed-off-by: Summer Qin <summer.qin@arm.com>
Soby Mathew [Tue, 14 Feb 2017 10:11:52 +0000 (10:11 +0000)]
Flush the GIC driver data after init
The GIC driver data is initialized by the primary CPU with caches
enabled. When the secondary CPU boots up, it initializes the
GICC/GICR interface with the caches disabled and there is a chance that
the driver data is not yet written back to the memory. This patch fixes
this problem by flushing the driver data after they have been
initialized.
Change-Id: Ie9477029683846209593ff005d2bac559bb8f5e6
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
tony.xie [Wed, 1 Mar 2017 03:05:17 +0000 (11:05 +0800)]
rockchip: plat_pm.c: Change callbacks implement for our SOCs.
Remove struct rockchip_pm_ops_cb and instead of using weak functions
implement; in this way we want the codes look clear and simple;
Change-Id: Ib9e8a5e932fdfc2b3e6a1ec502c40dfe720ac400
Signed-off-by: tony.xie <tony.xie@rock-chips.com>
Varun Wadekar [Tue, 7 Jun 2016 19:00:06 +0000 (12:00 -0700)]
Tegra: per-soc `get_target_pwr_state` handler
This patch implements a per-soc handler to calculate the target
power state for the cluster/system. A weak implementation of the
handler is provided for platforms to use by default.
For SoCs with multiple CPU clusters, this handler would provide
the individual cluster/system state, allowing the PSCI service to
flush caches during cluster/system power down.
Change-Id: I568cdb42204f9841a8430bd9105bd694f71cf91d
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 23 May 2016 22:56:14 +0000 (15:56 -0700)]
Tegra: relocate BL32 image to TZDRAM memory
This patch adds support to relocate the BL32 image from the NS
memory to TZDRAM during cold boot. The NS memory buffer is
cleared out after the process completes.
Change-Id: I1a033ffe73b8c309449f874d5187708d0a8846d2
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 21 Mar 2016 17:22:12 +0000 (10:22 -0700)]
stdlib: add memcpy16() to string.h
This patch exports memcpy16() for platforms, as an option to
memcpy().
Change-Id: I5d4e1cfb4608ec3674224b1447fdd740de549b1f
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 23 May 2016 18:41:07 +0000 (11:41 -0700)]
Tegra: get BL31 arguments from previous bootloader
This patch implements handlers which platforms can override to
get the BL31 arguments passed by the previous bootloader.
Change-Id: I6b9628a984644ce1b5de5aa6d7cd890e57241d89
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Mon, 6 Jun 2016 17:46:28 +0000 (10:46 -0700)]
Tegra: return BL32 entry point info if it is valid
This patch returns pointer to the BL32 entrypoint info only if
it is valid.
Change-Id: I71ce3c4626681753c94f3a7bbaa50c26c74874cb
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Sun, 5 Jun 2016 05:08:50 +0000 (22:08 -0700)]
Tegra: configure TZDRAM fence during early setup
This patch configures the TZDRAM fence during early platform
setup to allow the memory controller to enable DRAM encryption
before the TZDRAM actually gets used.
Change-Id: I0169ef9dda75699527b4e30c9e617a9036ba1d76
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Varun Wadekar [Thu, 2 Jun 2016 02:34:37 +0000 (19:34 -0700)]
Tegra: restore TZRAM settings on "System Resume"
This patch restores the TZRAM fence and the access permissions
on exiting the "System Suspend" state.
Change-Id: Ie313fca5a861c73f80df9639b01115780fb6e217
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>