[edk2-devel] [PATCH edk2-platforms v1 1/3] Platform/ARM: Juno: Generate ASL description of CPU topology
PierreGondois
pierre.gondois at arm.com
Wed Apr 27 14:59:41 UTC 2022
From: Pierre Gondois <Pierre.Gondois at arm.com>
The Dynamic Tables Framework has been updated to add support for
generating an ASL description of a CPU topology and its _LPI states.
This patch:
- Describes the _LPI states in the Configuration Manager of the Juno
- Add the generation of a new SSDT table describing the CPU topology
and its _LPI states
- Removes the CPU topology description of the DSDT table
Signed-off-by: Pierre Gondois <Pierre.Gondois at arm.com>
---
.../AslTables/Dsdt.asl | 198 ------------------
.../ConfigurationManager.c | 196 ++++++++++++++++-
.../ConfigurationManager.h | 20 +-
3 files changed, 206 insertions(+), 208 deletions(-)
diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
index 63c70c1e4f06..2270b517cd12 100644
--- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
+++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/AslTables/Dsdt.asl
@@ -33,204 +33,6 @@ DefinitionBlock("DsdtTable.aml", "DSDT", 1, "ARMLTD", "ARM-JUNO", EFI_ACPI_ARM_O
}
Return (Arg3)
}
- Device (CLU0) { // Cluster0 state
- Name(_HID, "ACPI0010")
- Name(_UID, 1)
- Name (_LPI, Package() {
- 0, // Version
- 0, // Level Index
- 1, // Count
- Package() { // Power Gating state for Cluster
- 2500, // Min residency (uS)
- 1150, // Wake latency (uS)
- 1, // Flags
- 1, // Arch Context Flags
- 100, //Residency Counter Frequency
- 0, // No Parent State
- 0x01000000, // Integer Entry method
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "CluPwrDn"
- },
- })
- Name(PLPI, Package() {
- 0, // Version
- 0, // Level Index
- 2, // Count
- Package() { // WFI for CPU
- 1, // Min residency (uS)
- 1, // Wake latency (uS)
- 1, // Flags
- 0, // Arch Context Flags
- 100, //Residency Counter Frequency
- 0, // No parent state
- ResourceTemplate () {
- // Register Entry method
- Register (FFixedHW,
- 0x20, // Bit Width
- 0x00, // Bit Offset
- 0xFFFFFFFF, // Address
- 0x03, // Access Size
- )
- },
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "WFI",
- },
- Package() { // Power Gating state for CPU
- 150, // Min residency (uS)
- 350, // Wake latency (uS)
- 1, // Flags
- 1, // Arch Context Flags
- 100, //Residency Counter Frequency
- 1, // Parent node can be in any state
- ResourceTemplate () {
- // Register Entry method
- Register (FFixedHW,
- 0x20, // Bit Width
- 0x00, // Bit Offset
- 0x00010000, // Address
- 0x03, // Access Size
- )
- },
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "CorePwrDn"
- },
- })
- Device(CPU0) { // A57-0: Cluster 0, Cpu 0
- Name(_HID, "ACPI0007")
- Name(_UID, 0)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- Device(CPU1) { // A57-1: Cluster 0, Cpu 1
- Name(_HID, "ACPI0007")
- Name(_UID, 1)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- }
- Device (CLU1) { // Cluster1 state
- Name(_HID, "ACPI0010")
- Name(_UID, 2)
- Name (_LPI, Package() {
- 0, // Version
- 0, // Level Index
- 1, // Count
- Package() { // Power Gating state for Cluster
- 2500, // Min residency (uS)
- 1150, // Wake latency (uS)
- 1, // Flags
- 1, // Arch Context Flags
- 100, //Residency Counter Frequency
- 0, // No Parent State
- 0x01000000, // Integer Entry method
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "CluPwrDn"
- },
- })
- Name(PLPI, Package() {
- 0, // Version
- 0, // Level Index
- 2, // Count
- Package() { // WFI for CPU
- 1, // Min residency (uS)
- 1, // Wake latency (uS)
- 1, // Flags
- 0, // Arch Context Flags
- 100, //Residency Counter Frequency
- 0, // No parent state
- ResourceTemplate () {
- // Register Entry method
- Register (FFixedHW,
- 0x20, // Bit Width
- 0x00, // Bit Offset
- 0xFFFFFFFF, // Address
- 0x03, // Access Size
- )
- },
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "WFI",
- },
- Package() { // Power Gating state for CPU
- 150, // Min residency (uS)
- 350, // Wake latency (uS)
- 1, // Flags
- 1, // Arch Context Flags
- 100, //Residency Counter Frequency
- 1, // Parent node can be in any state
- ResourceTemplate () {
- // Register Entry method
- Register (FFixedHW,
- 0x20, // Bit Width
- 0x00, // Bit Offset
- 0x00010000, // Address
- 0x03, // Access Size
- )
- },
- ResourceTemplate() { // Null Residency Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- ResourceTemplate() { // Null Usage Counter
- Register (SystemMemory, 0, 0, 0, 0)
- },
- "CorePwrDn"
- },
- })
- Device(CPU2) { // A53-0: Cluster 1, Cpu 0
- Name(_HID, "ACPI0007")
- Name(_UID, 2)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- Device(CPU3) { // A53-1: Cluster 1, Cpu 1
- Name(_HID, "ACPI0007")
- Name(_UID, 3)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- Device(CPU4) { // A53-2: Cluster 1, Cpu 2
- Name(_HID, "ACPI0007")
- Name(_UID, 4)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- Device(CPU5) { // A53-3: Cluster 1, Cpu 3
- Name(_HID, "ACPI0007")
- Name(_UID, 5)
- Method (_LPI, 0, NotSerialized) {
- return(PLPI)
- }
- }
- }
//
// LAN9118 Ethernet
diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
index 8a0464c5f637..977aba5da5c4 100644
--- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
+++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.c
@@ -1,7 +1,7 @@
/** @file
Configuration Manager Dxe
- Copyright (c) 2017 - 2021, Arm Limited. All rights reserved.<BR>
+ Copyright (c) 2017 - 2022, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -90,6 +90,14 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
CREATE_STD_ACPI_TABLE_GEN_ID (EStdAcpiTableIdPptt),
NULL
},
+ // SSDT Table (Cpu topology)
+ {
+ EFI_ACPI_6_3_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE,
+ 0, // Unused
+ CREATE_STD_ACPI_TABLE_GEN_ID (EStdAcpiTableIdSsdtCpuTopology),
+ NULL,
+ SIGNATURE_64 ('C','P','U','-','T','O','P','O')
+ },
/* PCI MCFG Table
PCIe is only available on Juno R1 and R2.
Add the PCI table entries at the end of the table so that
@@ -277,6 +285,8 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
0,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
+ CM_NULL_TOKEN,
+ // CM_OBJECT_TOKEN LpiToken
CM_NULL_TOKEN
},
// 'big' cluster
@@ -298,7 +308,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
BIG_CLUSTER_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (BigClusterResources)
+ REFERENCE_TOKEN (BigClusterResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (ClustersLpiRef)
},
// 'LITTLE' cluster
{
@@ -319,7 +331,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
LITTLE_CLUSTER_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (LittleClusterResources)
+ REFERENCE_TOKEN (LittleClusterResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (ClustersLpiRef)
},
// Two 'big' cores
{
@@ -340,7 +354,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
BIG_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (BigCoreResources)
+ REFERENCE_TOKEN (BigCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
},
{
// CM_OBJECT_TOKEN Token
@@ -360,7 +376,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
BIG_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (BigCoreResources)
+ REFERENCE_TOKEN (BigCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
},
// Four 'LITTLE' cores
{
@@ -381,7 +399,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
LITTLE_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (LittleCoreResources)
+ REFERENCE_TOKEN (LittleCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
},
{
// CM_OBJECT_TOKEN Token
@@ -401,7 +421,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
LITTLE_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (LittleCoreResources)
+ REFERENCE_TOKEN (LittleCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
},
{
// CM_OBJECT_TOKEN Token
@@ -421,7 +443,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
LITTLE_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (LittleCoreResources)
+ REFERENCE_TOKEN (LittleCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
},
{
// CM_OBJECT_TOKEN Token
@@ -441,7 +465,9 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
// UINT32 NoOfPrivateResources
LITTLE_CORE_RESOURCE_COUNT,
// CM_OBJECT_TOKEN PrivateResourcesArrayToken
- REFERENCE_TOKEN (LittleCoreResources)
+ REFERENCE_TOKEN (LittleCoreResources),
+ // CM_OBJECT_TOKEN LpiToken
+ REFERENCE_TOKEN (CoresLpiRef)
}
},
@@ -549,6 +575,84 @@ EDKII_PLATFORM_REPOSITORY_INFO ArmJunoPlatformRepositoryInfo = {
{
{ REFERENCE_TOKEN (CacheInfo[4]) }, // -> 'LITTLE' core's L1 I-cache
{ REFERENCE_TOKEN (CacheInfo[5]) } // -> 'LITTLE' core's L1 D-cache
+ },
+
+ // Low Power Idle state information (LPI) for all cores/clusters
+ {
+ { // LpiInfo[0] -> Clusters CluPwrDn
+ 2500, // MinResidency
+ 1150, // WorstCaseWakeLatency
+ 1, // Flags
+ 1, // ArchFlags
+ 100, // ResCntFreq
+ 0, // EnableParentState
+ 1, // IsInteger
+ 0x01000000, // IntegerEntryMethod
+ // RegisterEntryMethod (NULL, use IntegerEntryMethod)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ // ResidencyCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ // UsageCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ "CluPwrDn" // StateName
+ },
+ // LpiInfo[1] -> Cores WFI
+ {
+ 1, // MinResidency
+ 1, // WorstCaseWakeLatency
+ 1, // Flags
+ 0, // ArchFlags
+ 100, // ResCntFreq
+ 0, // EnableParentState
+ 0, // IsInteger
+ 0, // IntegerEntryMethod (0, use RegisterEntryMethod)
+ // RegisterEntryMethod
+ {
+ EFI_ACPI_6_3_FUNCTIONAL_FIXED_HARDWARE, // AddressSpaceId
+ 0x20, // RegisterBitWidth
+ 0x00, // RegisterBitOffset
+ 0x03, // AccessSize
+ 0xFFFFFFFF // Address
+ },
+ // ResidencyCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ // UsageCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ "WFI" // StateName
+ },
+ // LpiInfo[2] -> Cores CorePwrDn
+ {
+ 150, // MinResidency
+ 350, // WorstCaseWakeLatency
+ 1, // Flags
+ 1, // ArchFlags
+ 100, // ResCntFreq
+ 1, // EnableParentState
+ 0, // IsInteger
+ 0, // IntegerEntryMethod (0, use RegisterEntryMethod)
+ // RegisterEntryMethod
+ {
+ EFI_ACPI_6_3_FUNCTIONAL_FIXED_HARDWARE, // AddressSpaceId
+ 0x20, // RegisterBitWidth
+ 0x00, // RegisterBitOffset
+ 0x03, // AccessSize
+ 0x00010000 // Address
+ },
+ // ResidencyCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ // UsageCounterRegister (NULL)
+ { EFI_ACPI_6_3_SYSTEM_MEMORY, 0, 0, 0, 0 },
+ "CorePwrDn" // StateName
+ },
+ },
+ // Cluster Low Power Idle state references (LPI)
+ {
+ { REFERENCE_TOKEN (LpiInfo[0]) }
+ },
+ // Cores Low Power Idle state references (LPI)
+ {
+ { REFERENCE_TOKEN (LpiInfo[1]) },
+ { REFERENCE_TOKEN (LpiInfo[2]) },
}
};
@@ -809,6 +913,55 @@ GetGicCInfo (
return EFI_NOT_FOUND;
}
+/** Return Lpi State Infor.
+
+ @param [in] This Pointer to the Configuration Manager Protocol.
+ @param [in] CmObjectId The Object ID of the CM object requested
+ @param [in] SearchToken A unique token for identifying the requested
+ CM_ARM_LPI_INFO object.
+ @param [in, out] CmObject Pointer to the Configuration Manager Object
+ descriptor describing the requested Object.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER A parameter is invalid.
+ @retval EFI_NOT_FOUND The required object information is not found.
+**/
+EFI_STATUS
+EFIAPI
+GetLpiInfo (
+ IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST This,
+ IN CONST CM_OBJECT_ID CmObjectId,
+ IN CONST CM_OBJECT_TOKEN SearchToken,
+ IN OUT CM_OBJ_DESCRIPTOR * CONST CmObject
+ )
+{
+ EDKII_PLATFORM_REPOSITORY_INFO * PlatformRepo;
+ UINT32 TotalObjCount;
+ UINT32 ObjIndex;
+
+ if ((This == NULL) || (CmObject == NULL)) {
+ ASSERT (This != NULL);
+ ASSERT (CmObject != NULL);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ PlatformRepo = This->PlatRepoInfo;
+
+ TotalObjCount = ARRAY_SIZE (PlatformRepo->LpiInfo);
+
+ for (ObjIndex = 0; ObjIndex < TotalObjCount; ObjIndex++) {
+ if (SearchToken == (CM_OBJECT_TOKEN)&PlatformRepo->LpiInfo[ObjIndex]) {
+ CmObject->ObjectId = CmObjectId;
+ CmObject->Size = sizeof (PlatformRepo->LpiInfo[ObjIndex]);
+ CmObject->Data = (VOID*)&PlatformRepo->LpiInfo[ObjIndex];
+ CmObject->Count = 1;
+ return EFI_SUCCESS;
+ }
+ }
+
+ return EFI_NOT_FOUND;
+}
+
/** Return a list of Configuration Manager object references pointed to by the
given input token.
@@ -866,6 +1019,18 @@ GetCmObjRefs (
CmObject->Count = ARRAY_SIZE (PlatformRepo->LittleCoreResources);
return EFI_SUCCESS;
}
+ if (SearchToken == (CM_OBJECT_TOKEN)&PlatformRepo->ClustersLpiRef) {
+ CmObject->Size = sizeof (PlatformRepo->ClustersLpiRef);
+ CmObject->Data = (VOID*)&PlatformRepo->ClustersLpiRef;
+ CmObject->Count = ARRAY_SIZE (PlatformRepo->ClustersLpiRef);
+ return EFI_SUCCESS;
+ }
+ if (SearchToken == (CM_OBJECT_TOKEN)&PlatformRepo->CoresLpiRef) {
+ CmObject->Size = sizeof (PlatformRepo->CoresLpiRef);
+ CmObject->Data = (VOID*)&PlatformRepo->CoresLpiRef;
+ CmObject->Count = ARRAY_SIZE (PlatformRepo->CoresLpiRef);
+ return EFI_SUCCESS;
+ }
return EFI_NOT_FOUND;
}
@@ -1142,6 +1307,19 @@ GetArmNameSpaceObject (
}
break;
+ case EArmObjLpiInfo:
+ Status = HandleCmObjectRefByToken (
+ This,
+ CmObjectId,
+ NULL,
+ 0,
+ 0,
+ Token,
+ GetLpiInfo,
+ CmObject
+ );
+ break;
+
default: {
Status = EFI_NOT_FOUND;
DEBUG ((
diff --git a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
index 771b00c31b9e..1bc242bc9d85 100644
--- a/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
+++ b/Platform/ARM/JunoPkg/ConfigurationManager/ConfigurationManagerDxe/ConfigurationManager.h
@@ -115,7 +115,7 @@ typedef EFI_STATUS (*CM_OBJECT_HANDLER_PROC) (
/** The number of ACPI tables to install
*/
-#define PLAT_ACPI_TABLE_COUNT 10
+#define PLAT_ACPI_TABLE_COUNT 11
/** The number of platform generic timer blocks
*/
@@ -172,6 +172,15 @@ typedef EFI_STATUS (*CM_OBJECT_HANDLER_PROC) (
*/
#define LITTLE_CORE_RESOURCE_COUNT 2
+/** The number of Lpi states for the platform:
+ - two for the cores
+ - one for the clusters
+*/
+#define CORES_LPI_STATE_COUNT 2
+#define CLUSTERS_LPI_STATE_COUNT 1
+#define LPI_STATE_COUNT (CORES_LPI_STATE_COUNT + \
+ CLUSTERS_LPI_STATE_COUNT)
+
/** A structure describing the platform configuration
manager repository information
*/
@@ -238,6 +247,15 @@ typedef struct PlatformRepositoryInfo {
// 'LITTLE' core private resources
CM_ARM_OBJ_REF LittleCoreResources[LITTLE_CORE_RESOURCE_COUNT];
+ // Low Power Idle state information (LPI) for all cores/clusters
+ CM_ARM_LPI_INFO LpiInfo[LPI_STATE_COUNT];
+
+ // Clusters Low Power Idle state references (LPI)
+ CM_ARM_OBJ_REF ClustersLpiRef[CLUSTERS_LPI_STATE_COUNT];
+
+ // Cores Low Power Idle state references (LPI)
+ CM_ARM_OBJ_REF CoresLpiRef[CORES_LPI_STATE_COUNT];
+
/// Juno Board Revision
UINT32 JunoRevision;
} EDKII_PLATFORM_REPOSITORY_INFO;
--
2.25.1
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