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  1. 07 Apr, 2017 4 commits
  3. 05 Apr, 2017 4 commits
  5. 30 Mar, 2017 5 commits
  7. 27 Mar, 2017 1 commit
  9. 23 Mar, 2017 3 commits
    • Varun Wadekar's avatar
      Tegra186: enable support for simulation environment · abd3a91d
      Varun Wadekar authored 
      

The Tegra simulation environment has limited capabilities. This patch
checks the chip's major and minor versions to decide the features to
enable/disable - MCE firmware version checking is disabled and limited
Memory Controller settings are enabled

Change-Id: I258a807cc3b83cdff14a9975b4ab4f9d1a9d7dcf
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      abd3a91d
    • Varun Wadekar's avatar
      Tegra186: save/restore BL31 context to/from TZDRAM · 68c7de6f
      Varun Wadekar authored 
      

This patch adds support to save the BL31 state to the TZDRAM
before entering system suspend. The TZRAM loses state during
system suspend and so we need to copy the entire BL31 code to
TZDRAM before entering the state.

In order to restore the state on exiting system suspend, a new
CPU reset handler is implemented which gets copied to TZDRAM
during boot. TO keep things simple we use this same reset handler
for booting secondary CPUs too.

Change-Id: I770f799c255d22279b5cdb9b4d587d3a4c54fad7
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      68c7de6f
    • Varun Wadekar's avatar
      Tegra186: re-configure MSS' client settings · e64ce3ab
      Varun Wadekar authored 
      

This patch reprograms MSS to make ROC deal with ordering of
MC traffic after boot and system suspend exit. This is needed
as device boots with MSS having all control but POR wants ROC
to deal with the ordering. Performance is expected to improve
with ROC but since no one has really tested the performance,
keep the option configurable for now by introducing a platform
level makefile variable.

Change-Id: I2e782fea138ccf9d281eb043a6b2c3bb97c839a7
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      e64ce3ab
  11. 22 Mar, 2017 3 commits
    • Varun Wadekar's avatar
      Tegra186: implement support for System Suspend · 50402b17
      Varun Wadekar authored 
      

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: default avatarVarun Wadekar <vwadekar@nvidia.com>
      50402b17
    • Varun Wadekar's avatar
      Tegra186: memctrl_v2: restore video memory settings · ea96ac17
      Varun Wadekar authored 
      

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: default avatarVarun Wadekar <vwadekar@nvidia.com>
      ea96ac17
    • Varun Wadekar's avatar
      Tegra186: smmu: driver for the smmu hardware block · 4122151f
      Varun Wadekar authored 
      

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: default avatarVarun Wadekar <vwadekar@nvidia.com>
      4122151f
  13. 20 Mar, 2017 8 commits
  15. 02 Mar, 2017 3 commits
  17. 28 Feb, 2017 5 commits
    • Varun Wadekar's avatar
      Tegra: get BL31 arguments from previous bootloader · 8ab06d2f
      Varun Wadekar authored 
      

This patch implements handlers which platforms can override to
get the BL31 arguments passed by the previous bootloader.

Change-Id: I6b9628a984644ce1b5de5aa6d7cd890e57241d89
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      8ab06d2f
    • Varun Wadekar's avatar
      Tegra: GIC: differentiate between FIQs targeted towards EL3/S-EL1 · 45eab456
      Varun Wadekar authored 
      

This patch modifies the secure IRQ registration process to allow platforms
to specify the target CPUs as well as the owner of the IRQ. IRQs "owned"
by the EL3 would return INTR_TYPE_EL3 whereas those owned by the Trusted
OS would return INTR_TYPE_S_EL1 as a result.

Change-Id: I528f7c8220d0ae0c0f354e78d69e188abb666ef6
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      45eab456
    • Varun Wadekar's avatar
      Tegra: implement FIQ interrupt handler · 78e2bd10
      Varun Wadekar authored 
      

This patch adds a handler for FIQ interrupts triggered when
the CPU is in the NS world. The handler stores the NS world's
context along with ELR_EL3/SPSR_EL3.

The NS world driver issues an SMC initially to register it's
handler. The monitor firmware stores this handler address and
jumps to it when the FIQ interrupt fires. Upon entry into the
NS world the driver then issues another SMC to get the CPU
context when the FIQ fired. This allows the NS world driver to
determine the CPU state and call stack when the interrupt
fired. Generally, systems register watchdog interrupts as FIQs
which are then used to get the CPU state during hangs/crashes.

Change-Id: I733af61a08d1318c75acedbe9569a758744edd0c
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      78e2bd10
    • Varun Wadekar's avatar
      Tegra: GIC: enable FIQ interrupt handling · d3360301
      Varun Wadekar authored 
      

Tegra chips support multiple FIQ interrupt sources. These interrupts
are enabled in the GICD/GICC interfaces by the tegra_gic driver. A
new FIQ handler would be added in a subsequent change which can be
registered by the platform code.

This patch adds the GIC programming as part of the tegra_gic_setup()
which now takes an array of all the FIQ interrupts to be enabled for
the platform. The Tegra132 and Tegra210 platforms right now do not
register for any FIQ interrupts themselves, but will definitely use
this support in the future.

Change-Id: I0ea164be901cd6681167028fea0567399f18d4b8
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      d3360301
    • Varun Wadekar's avatar
      Tegra: handler for per-soc early setup · 5ea0b028
      Varun Wadekar authored 
      

This patch adds a weak handler for early platform setup which
can be overriden by the soc-specific handlers to perform any
early setup tasks.

Change-Id: I1a7a98d59b2332a3030c6dca5a9b7be977177326
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      5ea0b028
  19. 23 Feb, 2017 4 commits