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DynamicTablesPkg: AML Code generation to add _CPC entries

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_CPC entries can describe CPU performance information.
The object is described in ACPI 6.4 s8.4.7.1.
"_CPC (Continuous Performance Control)".

Add AmlCreateCpcNode() helper function to add _CPC entries to an
existing CPU object.

Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
This commit is contained in:
Jeff Brasen
2022-09-22 14:36:45 -06:00
committed by mergify[bot]
parent 09c90532e7
commit 58350c0055
2 changed files with 529 additions and 0 deletions
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54
DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
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@@ -36,6 +36,7 @@
@}
*/
#include <AmlCpcInfo.h>
#include <IndustryStandard/Acpi.h>
#ifndef AML_HANDLE
@@ -1336,6 +1337,59 @@ AmlAddNameIntegerPackage (
IN AML_OBJECT_NODE_HANDLE PackageNode
);
/** Create a _CPC node.
Creates and optionally adds the following node
Name(_CPC, Package()
{
NumEntries, // Integer
Revision, // Integer
HighestPerformance, // Integer or Buffer (Resource Descriptor)
NominalPerformance, // Integer or Buffer (Resource Descriptor)
LowestNonlinearPerformance, // Integer or Buffer (Resource Descriptor)
LowestPerformance, // Integer or Buffer (Resource Descriptor)
GuaranteedPerformanceRegister, // Buffer (Resource Descriptor)
DesiredPerformanceRegister , // Buffer (Resource Descriptor)
MinimumPerformanceRegister , // Buffer (Resource Descriptor)
MaximumPerformanceRegister , // Buffer (Resource Descriptor)
PerformanceReductionToleranceRegister, // Buffer (Resource Descriptor)
TimeWindowRegister, // Buffer (Resource Descriptor)
CounterWraparoundTime, // Integer or Buffer (Resource Descriptor)
ReferencePerformanceCounterRegister, // Buffer (Resource Descriptor)
DeliveredPerformanceCounterRegister, // Buffer (Resource Descriptor)
PerformanceLimitedRegister, // Buffer (Resource Descriptor)
CPPCEnableRegister // Buffer (Resource Descriptor)
AutonomousSelectionEnable, // Integer or Buffer (Resource Descriptor)
AutonomousActivityWindowRegister, // Buffer (Resource Descriptor)
EnergyPerformancePreferenceRegister, // Buffer (Resource Descriptor)
ReferencePerformance // Integer or Buffer (Resource Descriptor)
LowestFrequency, // Integer or Buffer (Resource Descriptor)
NominalFrequency // Integer or Buffer (Resource Descriptor)
})
If resource buffer is NULL then integer will be used.
Cf. ACPI 6.4, s8.4.7.1 _CPC (Continuous Performance Control)
@ingroup CodeGenApis
@param [in] CpcInfo CpcInfo object
@param [in] ParentNode If provided, set ParentNode as the parent
of the node created.
@param [out] NewCpcNode If success and provided, contains the created node.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
**/
EFI_STATUS
EFIAPI
AmlCreateCpcNode (
IN AML_CPC_INFO *CpcInfo,
IN AML_NODE_HANDLE ParentNode OPTIONAL,
OUT AML_OBJECT_NODE_HANDLE *NewCpcNode OPTIONAL
);
// DEPRECATED APIS
#ifndef DISABLE_NEW_DEPRECATED_INTERFACES