From: Pierre Gondois <pierre.gond...@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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