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  1. 28 Nov, 2019 17 commits
  3. 13 Nov, 2019 1 commit
  5. 24 Oct, 2019 5 commits
  7. 15 Aug, 2019 1 commit
  9. 01 Aug, 2019 1 commit
    • Julius Werner's avatar
      Replace __ASSEMBLY__ with compiler-builtin __ASSEMBLER__ · d5dfdeb6
      Julius Werner authored 
      

NOTE: __ASSEMBLY__ macro is now deprecated in favor of __ASSEMBLER__.

All common C compilers predefine a macro called __ASSEMBLER__ when
preprocessing a .S file. There is no reason for TF-A to define it's own
__ASSEMBLY__ macro for this purpose instead. To unify code with the
export headers (which use __ASSEMBLER__ to avoid one extra dependency),
let's deprecate __ASSEMBLY__ and switch the code base over to the
predefined standard.

Change-Id: Id7d0ec8cf330195da80499c68562b65cb5ab7417
Signed-off-by: default avatarJulius Werner <jwerner@chromium.org>
      d5dfdeb6
  11. 03 Apr, 2019 1 commit
  13. 01 Mar, 2019 1 commit
    • Varun Wadekar's avatar
      Tegra: dummy support for the io_storage backend · 8d56e24b
      Varun Wadekar authored 
      

This patch provides dummy macros and platform files to compile
the io_storage driver backend. This patch is necessary to
remove the "--unresolved=el3_panic" linker flag from Tegra's
makefiles and allow us to revert this workaround, previously
suggested by the ARM toolchain team.

The "--unresolved=el3_panic" flag actually was a big hammer that
allowed Tegra platforms to work with armlink previously but it
masks legit errors with the code as well.

Change-Id: I0421d35657823215229f84231896b84167f90548
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      8d56e24b
  15. 07 Feb, 2019 2 commits
  17. 31 Jan, 2019 11 commits
    • Varun Wadekar's avatar
      Tegra: restrict non-secure PMC accesses · a01b0f16
      Varun Wadekar authored 
      

Platforms that do not support bpmp firmware, do not need access
to the PMC block from outside of the CPU complex. The agents
running on the CPU can always access the PMC through the EL3
exception space.

This patch restricts non-secure world access to the PMC block on
such platforms.

Change-Id: I2c4318dc07ddf6407c1700595e0f4aac377ba258
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      a01b0f16
    • Varun Wadekar's avatar
      Tegra: bpmp: mark device "not present" on boot timeout · e6712cf5
      Varun Wadekar authored 
      

This patch updates the state machine to "not present" if the bpmp
firmware is not found in the system during boot. The suspend
handler also checks now if the interface exists, before updating
the internal state machine.

Reported by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>

Change-Id: If8fd7f8e412bb603944555c24826855226e7f48c
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      e6712cf5
    • kalyani chidambaram's avatar
      Tegra210: clear PMC_DPD registers on resume · da0f4743
      kalyani chidambaram authored 
      

This patch clears the PMC's DPD registers on resuming from System
Suspend, for all Tegra210 platforms that support the sc7entry-fw.

Change-Id: I7881ef0a5f609ed28b158bc2f4016abea3c7f305
Signed-off-by: default avatarkalyani chidambaram <kalyanic@nvidia.com>
      da0f4743
    • Varun Wadekar's avatar
      Tegra: bpmp: suspend/resume handlers · d37a1322
      Varun Wadekar authored 
      

This patch adds suspend and resume handlers for the BPMP
interface. Mark the interface as "suspended" before entering
System Suspend and verify that BPMP is alive on exit.

Change-Id: I74ccbc86125079b46d06360fc4c7e8a5acfbdfb2
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      d37a1322
    • Varun Wadekar's avatar
      Tegra210: skip past sc7entry-fw signature header · c33473d5
      Varun Wadekar authored 
      

This patch skips past the signature header added to the sc7entry-fw
binary by the previous level bootloader. Currently, the size of
the header is 1KB, so adjust the start address and the binary size
at the time of copy.

Change-Id: Id0494548009749035846d54df417a960c640c8f9
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      c33473d5
    • kalyani chidambaram's avatar
      Tegra210: SiP handlers to allow PMC access · fdc08e2e
      kalyani chidambaram authored 
      

This patch adds SiP handler for Tegra210 platforms to service
read/write requests for PMC block. None of the secure registers
are accessible to the NS world though.

Change-Id: I7dc1f10c6a6ee6efc642ddcfb1170fb36d3accff
Signed-off-by: default avatarkalyani chidambaram <kalyanic@nvidia.com>
      fdc08e2e
    • Varun Wadekar's avatar
      Tegra210: power off all DMA masters before System Suspend entry · 2d5560f9
      Varun Wadekar authored 
      

This patch puts all the DMA masters in reset before starting the System
Suspend sequence. This helps us make sure that there are no rogue agents
in the system trying to over-write the SC7 Entry Firmware with their own.

Change-Id: I7eb39999d229951e612fbfeb9f86c4efb8f98b5a
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      2d5560f9
    • Varun Wadekar's avatar
      Tegra: support for System Suspend using sc7entry-fw binary · 3ca3c27c
      Varun Wadekar authored 
      

This patch adds support to enter System Suspend on Tegra210 platforms
without the traditional BPMP firmware. The BPMP firmware will no longer
be supported on Tegra210 platforms and its functionality will be
divided across the CPU and sc7entry-fw.

The sc7entry-fw takes care of performing the hardware sequence required
to enter System Suspend (SC7 power state) from the COP. The CPU is required
to load this firmware to the internal RAM of the COP and start the sequence.
The CPU also make sure that the COP is off after cold boot and is only
powered on when we want to start the actual System Suspend sequence.

The previous bootloader loads the firmware to TZDRAM and passes its base and
size as part of the boot parameters. The EL3 layer is supposed to sanitize
the parameters before touching the firmware blob.

To assist the warmboot code with the PMIC discovery, EL3 is also supposed to
program PMC's scratch register #210, with appropriate values. Without these
settings the warmboot code wont be able to get the device out of System
Suspend.

Change-Id: I5a7b868512dbfd6cfefd55acf3978a1fd7ebf1e2
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      3ca3c27c
    • Varun Wadekar's avatar
      Tegra210: remove support for cluster power down · 93e3b0f3
      Varun Wadekar authored 
      

This patch removes support for powering down a CPU cluster on
Tegra210 platforms as none of them actually use it.

Change-Id: I9665634cf2b5b7b8a1b5a2700cae152dc9165fe3
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      93e3b0f3
    • Varun Wadekar's avatar
      Tegra210: support for cluster idle from the CPU · 7db077f2
      Varun Wadekar authored 
      

This patch adds support to enter/exit to/from cluster idle power
state on Tegra210 platforms that do not load BPMP firmware.

The CPU initates the cluster idle sequence on the last standing
CPU, by following these steps:

Entry
-----
* stop other CPUs from waking up
* program the PWM pinmux to tristate for OVR PMIC
* program the flow controller to enter CC6 state
* skip L1 $ flush during cluster power down, as L2 $ is inclusive
  of L1 $ on Cortex-A57 CPUs

Exit
----
* program the PWM pinmux to un-tristate for OVR PMIC
* allow other CPUs to wake up

This patch also makes sure that cluster idle state entry is not
enabled until CL-DVFS is ready.

Change-Id: I54cf31bf72b4a09d9bf9d2baaed6ee5a963c7808
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      7db077f2
    • Varun Wadekar's avatar
      Tegra: pmc: helper function to find last ON CPU · a7a63e0e
      Varun Wadekar authored 
      

This patch adds a helper function to find the last standing CPU
in a cluster.

Change-Id: Id018f1958f458c772c7b0c52af8ddf7532b1cec5
Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      a7a63e0e