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  1. 13 Nov, 2017 3 commits
  3. 09 Nov, 2017 1 commit
  5. 06 Nov, 2017 2 commits
  7. 03 Nov, 2017 1 commit
    • Soby Mathew's avatar
      Fix PSCI STAT time stamp collection · bfc87a8d
      Soby Mathew authored 
      

This patch includes various fixes for PSCI STAT functionality
relating to timestamp collection:

1. The PSCI stat accounting for retention states for higher level
power domains were done outside the locks which could lead to
spurious values in some race conditions. This is moved inside
the locks. Also, the call to start the stat accounting was redundant
which is now removed.

2. The timestamp wrap-around case when calculating residency did
not cater for AArch32. This is now fixed.

3. In the warm boot path, `plat_psci_stat_accounting_stop()` was
getting invoked prior to population of target power states. This
is now corrected.

Change-Id: I851526455304fb74ff0a724f4d5318cd89e19589
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      bfc87a8d
  9. 02 Nov, 2017 1 commit
  11. 01 Nov, 2017 2 commits
  13. 26 Oct, 2017 1 commit
  15. 25 Oct, 2017 3 commits
  17. 24 Oct, 2017 2 commits
  19. 18 Oct, 2017 3 commits
  21. 17 Oct, 2017 3 commits
  23. 16 Oct, 2017 13 commits
  25. 13 Oct, 2017 2 commits
  27. 11 Oct, 2017 2 commits
    • Soby Mathew's avatar
      ARM platforms: enable GICv3 state save/restore · e35a3fb5
      Soby Mathew authored 
      

Provides GICv3 save/restore feature to arm_system_pwr_domain_resume and
arm_system_pwr_domain_save functions.

Introduce FVP PSCI power level 3 (System level) support. This is solely
done to provide example code on how to use the GICv3 save and restore
helpers.

Also make CSS GICv3 platforms power off the Redistributor on SYSTEM
SUSPEND as its state is saved and restored.

Change-Id: I0d852f3af8824edee1a17c085cf593ddd33a4e77
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
Co-Authored-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
      e35a3fb5
    • Soby Mathew's avatar
      ARM platforms: Add support for EL3 TZC memory region · a22dffc6
      Soby Mathew authored 
      

Some recent enhancements to EL3 runtime firmware like support for
save and restoring GICv3 register context during system_suspend
necessitates additional data memory for the firmware. This patch
introduces support for creating a TZC secured DDR carveout for use
by ARM reference platforms. A new linker section `el3_tzc_dram` is
created using platform supplied linker script and data marked with
the attribute `arm_el3_tzc_dram` will be placed in this section.
The FVP makefile now defines the `PLAT_EXTRA_LD_SCRIPT` variable to
allow inclusion of the platform linker script by the top level BL31
linker script.

Change-Id: I0e7f4a75a6ac51419c667875ff2677043df1585d
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
      a22dffc6
  29. 05 Oct, 2017 1 commit
    • Soby Mathew's avatar
      GICv3: add functions for save and restore · ebf1ca10
      Soby Mathew authored 
      

During system suspend, the GICv3 Distributor and Redistributor context
can be lost due to power gating of the system power domain. This means
that the GICv3 context needs to be saved prior to system suspend and
restored on wakeup. Currently the consensus is that the Firmware should
be in charge of this. See tf-issues#464 for more details.

This patch introduces helper APIs in the GICv3 driver to save and
restore the Distributor and Redistributor contexts. The GICv3 ITS
context is not considered in this patch because the specification says
that the details of ITS power management is implementation-defined.
These APIs are expected to be appropriately invoked by the platform
layer during system suspend.

Fixes ARM-software/tf-issues#464

Change-Id: Iebb9c6770ab8c4d522546f161fa402d2fe02ec00
Signed-off-by: default avatarSoby Mathew <soby.mathew@arm.com>
Signed-off-by: default avatarDouglas Raillard <douglas.raillard@arm.com>
      ebf1ca10