From: Pierre Gondois <pierre.gondois@arm.com>

v1:
- https://edk2.groups.io/g/devel/message/104115
v2:
- Rebase patches on latest version.

The SCMI performance protocol allows to query the Operating Performance
Points (OPPs) available for each performance domain. Each OPP has a
specific frequency/power consumption/performance.

On Device Tree (DT) based platforms, the SCMI protocol is directly
available from the OS.
On ACPI based platforms, the _PSD objects allows to identify CPUs
belonging
to the same performance domain. CPUs belonging to the same performance
domain have the same frequency. The _CPC object allows to
describe/control the performance level/frequency of a CPU (i.e. its
frequency).

This patchset:
- Add support for 'DescribeFastchannel' SCMI performance protocol
- Add a object to the DynamicTablesPkg to describe the PSD information
- Allows to generate _PSD objects in the SsdtCpuTopologyGenerator
- Add a ArmScmiInfoLib library populating DynamicTablesPkg CPC objects,
  relying on the SCMI protocol to fetch the relevant information

A patchset for Juno-r2 platforms will be submitted to demonstrate
this functionality.

Pierre Gondois (11):
  ArmPkg/ArmScmiDxe: Rename PERFORMANCE_PROTOCOL_VERSION
  ArmPkg/ArmScmiDxe: Add PERFORMANCE_DESCRIBE_FASTCHANNEL support
  MdePkg/Acpi64: Add _PSD/_CPC/State Coordination Types macros
  DynamicTablesPkg: Use new CPC revision macro
  DynamicTablesPkg: Rename AmlCpcInfo.h to AcpiObjects.h
  DynamicTablesPkg: Add CM_ARM_PSD_INFO object
  DynamicTablesPkg: Add PsdToken field to CM_ARM_GICC_INFO object
  DynamicTablesPkg: Add AmlCreatePsdNode() to generate _PSD
  DynamicTablesPkg: Generate _PSD in SsdtCpuTopologyGenerator
  DynamicTablesPkg: Add ArmScmiInfoLib
  DynamicTablesPkg: Remove check for _CPC field

 .../ArmScmiDxe/ScmiPerformanceProtocol.c      |  80 ++++-
 ArmPkg/Include/Library/ArmLib.h               |   1 +
 .../Protocol/ArmScmiPerformanceProtocol.h     | 101 +++++-
 DynamicTablesPkg/DynamicTables.dsc.inc        |   1 +
 DynamicTablesPkg/DynamicTablesPkg.dec         |   3 +
 DynamicTablesPkg/DynamicTablesPkg.dsc         |   1 +
 .../Include/{AmlCpcInfo.h => AcpiObjects.h}   |  20 ++
 .../Include/ArmNameSpaceObjects.h             |  19 +-
 .../Include/Library/AmlLib/AmlLib.h           |  37 ++-
 .../Include/Library/ArmScmiInfoLib.h          |  33 ++
 .../SsdtCpuTopologyGenerator.c                |  98 +++++-
 .../Library/ArmScmiInfoLib/ArmScmiInfoLib.c   | 294 ++++++++++++++++++
 .../Library/ArmScmiInfoLib/ArmScmiInfoLib.inf |  31 ++
 .../Common/AmlLib/CodeGen/AmlCodeGen.c        | 211 ++++++++++++-
 .../ConfigurationManagerObjectParser.c        |  14 +-
 MdePkg/Include/IndustryStandard/Acpi64.h      |  25 +-
 16 files changed, 936 insertions(+), 33 deletions(-)
 rename DynamicTablesPkg/Include/{AmlCpcInfo.h => AcpiObjects.h} (88%)
 create mode 100644 DynamicTablesPkg/Include/Library/ArmScmiInfoLib.h
 create mode 100644 DynamicTablesPkg/Library/ArmScmiInfoLib/ArmScmiInfoLib.c
 create mode 100644 DynamicTablesPkg/Library/ArmScmiInfoLib/ArmScmiInfoLib.inf

-- 
2.25.1



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