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| author | Jeff Brasen <jbrasen@nvidia.com> | 2022-09-22 14:36:45 -0600 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-09-23 17:21:36 +0000 |
| commit | 58350c0055c65ceae6f77908910cddfff419a2f1 (patch) | |
| tree | 0e5d81b9ecb87b05e187c88018f3896749e57776 /DynamicTablesPkg/Include | |
| parent | 09c90532e7a003c3598f66f11224e73a4803e52f (diff) | |
| download | edk2-58350c0055c65ceae6f77908910cddfff419a2f1.tar.gz edk2-58350c0055c65ceae6f77908910cddfff419a2f1.tar.bz2 edk2-58350c0055c65ceae6f77908910cddfff419a2f1.zip | |
DynamicTablesPkg: AML Code generation to add _CPC entries
_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>
Diffstat (limited to 'DynamicTablesPkg/Include')
| -rw-r--r-- | DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h index 39968660f2..0d8446d782 100644 --- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h +++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h @@ -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
|