Hello Jeff,
I think it's ok to make this the generic case and remove the
Pcd to enable it.
Cf ACPI 6.5, 5.2.30.1 Processor hierarchy node structure (Type 0):
"Multiple trees may be described, covering for example multiple packages.
For the root of a tree, the parent pointer should be 0."
and
"Each valid processor must belong to exactly one package. That is,
the leaf must itself be a physical package or have an ancestor
marked as a physical package."
so this original comment is incorrect:
"""
// It is assumed that there is one unique CM_ARM_PROC_HIERARCHY_INFO
// structure with no ParentToken and the EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL
// flag set. All other CM_ARM_PROC_HIERARCHY_INFO are non-physical and
// have a ParentToken.
"""
On 2/1/23 17:42, Jeff Brasen wrote:
In SSDT CPU topology generator allow for multiple top level physical
nodes as would be seen with a multi-socket system. This will be auto
detected if there are more then one physical device and there is a
new PCD to enable forcing of a top level processor container to allow
for consistency for systems that can be either single or multi socket.
Signed-off-by: Jeff Brasen <jbra...@nvidia.com>
---
DynamicTablesPkg/DynamicTablesPkg.dec | 3 +
.../SsdtCpuTopologyGenerator.c | 66 ++++++++++---------
.../SsdtCpuTopologyLibArm.inf | 4 ++
3 files changed, 41 insertions(+), 32 deletions(-)
diff --git a/DynamicTablesPkg/DynamicTablesPkg.dec
b/DynamicTablesPkg/DynamicTablesPkg.dec
index adc2e67cbf..a061b70322 100644
--- a/DynamicTablesPkg/DynamicTablesPkg.dec
+++ b/DynamicTablesPkg/DynamicTablesPkg.dec
@@ -63,5 +63,8 @@
# Use PCI segment numbers as UID
gEdkiiDynamicTablesPkgTokenSpaceGuid.PcdPciUseSegmentAsUid|FALSE|BOOLEAN|0x40000009
+ # Force top level container for single socket devices
+
gEdkiiDynamicTablesPkgTokenSpaceGuid.PcdForceTopLevelProcessorContainer|FALSE|BOOLEAN|0x4000000A
+
[Guids]
gEdkiiDynamicTablesPkgTokenSpaceGuid = { 0xab226e66, 0x31d8, 0x4613, {
0x87, 0x9d, 0xd2, 0xfa, 0xb6, 0x10, 0x26, 0x3c } }
diff --git
a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
index c24da8ec71..58f86ff508 100644
---
a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
+++
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
@@ -22,6 +22,7 @@
#include <Library/AcpiHelperLib.h>
#include <Library/TableHelperLib.h>
#include <Library/AmlLib/AmlLib.h>
+#include <Library/PcdLib.h>
#include <Protocol/ConfigurationManagerProtocol.h>
#include "SsdtCpuTopologyGenerator.h"
@@ -814,7 +815,8 @@ CreateAmlProcessorContainer (
Protocol Interface.
@param [in] NodeToken Token of the CM_ARM_PROC_HIERARCHY_INFO
currently handled.
- Cannot be CM_NULL_TOKEN.
+ CM_NULL_TOKEN if top level container
+ should be created.
@param [in] ParentNode Parent node to attach the created
node to.
@param [in,out] ProcContainerIndex Pointer to the current processor
container
@@ -841,12 +843,12 @@ CreateAmlCpuTopologyTree (
AML_OBJECT_NODE_HANDLE ProcContainerNode;
UINT32 Uid;
UINT16 Name;
+ UINT32 NodeFlags;
ASSERT (Generator != NULL);
ASSERT (Generator->ProcNodeList != NULL);
ASSERT (Generator->ProcNodeCount != 0);
ASSERT (CfgMgrProtocol != NULL);
- ASSERT (NodeToken != CM_NULL_TOKEN);
ASSERT (ParentNode != NULL);
ASSERT (ProcContainerIndex != NULL);
@@ -893,8 +895,14 @@ CreateAmlCpuTopologyTree (
} else {
// If this is not a Cpu, then this is a processor container.
+ NodeFlags = Generator->ProcNodeList[Index].Flags;
+ // Allow physical property for top level nodes
+ if (NodeToken == CM_NULL_TOKEN) {
+ NodeFlags &= ~EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL;
+ }
+
Even though it was never encountered so far, it should also be possible
to have a physical package consisting of only one CPU. So I guess it
would be better to create a function to check the flags, whether the
ProcNode is a CPU or a cluster.
I attached a Wip patch base on your work where such function is created.
Feel free to take it/modify it at your will.
// Acpi processor Id for clusters is not handled.
- if ((Generator->ProcNodeList[Index].Flags & PPTT_PROCESSOR_MASK) !=
+ if ((NodeFlags & PPTT_PROCESSOR_MASK) !=
PPTT_CLUSTER_PROCESSOR_MASK)
{
DEBUG ((
@@ -973,10 +981,10 @@ CreateTopologyFromProcHierarchy (
IN AML_OBJECT_NODE_HANDLE ScopeNode
)
{
- EFI_STATUS Status;
- UINT32 Index;
- UINT32 TopLevelProcNodeIndex;
- UINT32 ProcContainerIndex;
+ EFI_STATUS Status;
+ UINT32 Index;
+ CM_OBJECT_TOKEN TopLevelToken;
+ UINT32 ProcContainerIndex;
ASSERT (Generator != NULL);
ASSERT (Generator->ProcNodeCount != 0);
@@ -984,8 +992,8 @@ CreateTopologyFromProcHierarchy (
ASSERT (CfgMgrProtocol != NULL);
ASSERT (ScopeNode != NULL);
- TopLevelProcNodeIndex = MAX_UINT32;
- ProcContainerIndex = 0;
+ TopLevelToken = CM_NULL_TOKEN;
+ ProcContainerIndex = 0;
Status = TokenTableInitialize (Generator, Generator->ProcNodeCount);
if (EFI_ERROR (Status)) {
@@ -993,33 +1001,27 @@ CreateTopologyFromProcHierarchy (
return Status;
}
- // It is assumed that there is one unique CM_ARM_PROC_HIERARCHY_INFO
- // structure with no ParentToken and the EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL
- // flag set. All other CM_ARM_PROC_HIERARCHY_INFO are non-physical and
- // have a ParentToken.
- for (Index = 0; Index < Generator->ProcNodeCount; Index++) {
- if ((Generator->ProcNodeList[Index].ParentToken == CM_NULL_TOKEN) &&
- (Generator->ProcNodeList[Index].Flags &
- EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL))
- {
- if (TopLevelProcNodeIndex != MAX_UINT32) {
- DEBUG ((
- DEBUG_ERROR,
- "ERROR: SSDT-CPU-TOPOLOGY: Top level CM_ARM_PROC_HIERARCHY_INFO "
- "must be unique\n"
- ));
- ASSERT (0);
- goto exit_handler;
- }
+ if (!PcdGetBool (PcdForceTopLevelProcessorContainer)) {
+ for (Index = 0; Index < Generator->ProcNodeCount; Index++) {
+ if ((Generator->ProcNodeList[Index].ParentToken == CM_NULL_TOKEN) &&
+ (Generator->ProcNodeList[Index].Flags &
+ EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL))
+ {
+ // Multi-socket detected, using top level containers
+ if (TopLevelToken != CM_NULL_TOKEN) {
+ TopLevelToken = CM_NULL_TOKEN;
+ break;
+ }
- TopLevelProcNodeIndex = Index;
- }
- } // for
+ TopLevelToken = Generator->ProcNodeList[Index].Token;
+ }
+ } // for
+ }
Status = CreateAmlCpuTopologyTree (
Generator,
CfgMgrProtocol,
- Generator->ProcNodeList[TopLevelProcNodeIndex].Token,
+ TopLevelToken,
ScopeNode,
&ProcContainerIndex
);
@@ -1106,7 +1108,7 @@ CreateTopologyFromGicC (
break;
}
}
- } // for
+ } // for
Is it possible to remove this change ?
return Status;
}
diff --git
a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyLibArm.inf
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyLibArm.inf
index 3e2d154749..00adfe986f 100644
---
a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyLibArm.inf
+++
b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyLibArm.inf
@@ -31,3 +31,7 @@
AcpiHelperLib
AmlLib
BaseLib
+ PcdLib
+
+[Pcd]
+ gEdkiiDynamicTablesPkgTokenSpaceGuid.PcdForceTopLevelProcessorContainer
-=-=-=-=-=-=-=-=-=-=-=-
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-=-=-=-=-=-=-=-=-=-=-=-
From 78ef745a20ea9fe231ce5ff19f1c248711989045 Mon Sep 17 00:00:00 2001
From: Pierre Gondois <pierre.gond...@arm.com>
Date: Thu, 2 Feb 2023 12:53:20 +0100
Subject: [PATCH 1/1] WIP: DynamicTablesPkg/SsdtCpuTopology: Allow
multi-packages topologies
Signed-off-by: Pierre Gondois <pierre.gond...@arm.com>
---
CryptoPkg/Library/OpensslLib/openssl | 2 +-
.../SsdtCpuTopologyGenerator.c | 127 +++++++++++-------
2 files changed, 80 insertions(+), 49 deletions(-)
diff --git a/CryptoPkg/Library/OpensslLib/openssl b/CryptoPkg/Library/OpensslLib/openssl
index 129058165d19..d82e959e621a 160000
--- a/CryptoPkg/Library/OpensslLib/openssl
+++ b/CryptoPkg/Library/OpensslLib/openssl
@@ -1 +1 @@
-Subproject commit 129058165d195e43a0ad10111b0c2e29bdf65980
+Subproject commit d82e959e621a3d597f1e0d50ff8c2d8b96915fd7
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
index c24da8ec71ad..8f3dd1defaa8 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtCpuTopologyLibArm/SsdtCpuTopologyGenerator.c
@@ -805,6 +805,67 @@ CreateAmlProcessorContainer (
return Status;
}
+/** Check flags and topology of a a ProcNode.
+
+ @param [in] NodeFlags Flags of the ProcNode to check.
+ @param [in] IsCpu The ProcNode is a CPU.
+ @param [in] NodeToken NodeToken of the ProcNode.
+ @param [in] ParentNodeToken Parent NodeToken of the ProcNode.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+CheckProcNode (
+ UINT32 NodeFlags,
+ BOOLEAN IsCpu,
+ CM_OBJECT_TOKEN NodeToken,
+ CM_OBJECT_TOKEN ParentNodeToken
+ )
+{
+ BOOLEAN InvalidFlags;
+ BOOLEAN HasPhysicalPackageBit;
+ BOOLEAN IsTopLevelNode;
+
+ HasPhysicalPackageBit = (NodeFlags & EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL) ==
+ EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL;
+ IsTopLevelNode = (ParentNodeToken == CM_NULL_TOKEN);
+
+ // A top level node must have the Physical Package bit set.
+ // Clear it once checked.
+ InvalidFlags = HasPhysicalPackageBit ^ IsTopLevelNode;
+ NodeFlags &= ~EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL;
+
+ // Don't support topologies with more than 3 levels for now,
+ // i.e. deeper than PhysicalPackage -> Cluster -> CPU
+ InvalidFlags |= !IsTopLevelNode && !IsCpu &&
+ (NodeToken == CM_NULL_TOKEN);
+
+ // Now check CPU/Cluster specific flags.
+ if (IsCpu) {
+ InvalidFlags |= ((NodeFlags & PPTT_PROCESSOR_MASK) !=
+ PPTT_CPU_PROCESSOR_MASK);
+ } else {
+ InvalidFlags |= ((NodeFlags & PPTT_PROCESSOR_MASK) !=
+ PPTT_CLUSTER_PROCESSOR_MASK);
+ }
+
+ // Assume the top level node is a physical package.
+ if (InvalidFlags) {
+ DEBUG ((
+ DEBUG_ERROR,
+ "ERROR: SSDT-CPU-TOPOLOGY: Invalid flags for ProcNode: 0x%p.\n",
+ (VOID *)NodeToken
+ ));
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
/** Create an AML representation of the Cpu topology.
A processor container is by extension any non-leave device in the cpu topology.
@@ -846,7 +907,6 @@ CreateAmlCpuTopologyTree (
ASSERT (Generator->ProcNodeList != NULL);
ASSERT (Generator->ProcNodeCount != 0);
ASSERT (CfgMgrProtocol != NULL);
- ASSERT (NodeToken != CM_NULL_TOKEN);
ASSERT (ParentNode != NULL);
ASSERT (ProcContainerIndex != NULL);
@@ -859,16 +919,15 @@ CreateAmlCpuTopologyTree (
// Only Cpus (leaf nodes in this tree) have a GicCToken.
// Create a Cpu node.
if (Generator->ProcNodeList[Index].GicCToken != CM_NULL_TOKEN) {
- if ((Generator->ProcNodeList[Index].Flags & PPTT_PROCESSOR_MASK) !=
- PPTT_CPU_PROCESSOR_MASK)
- {
- DEBUG ((
- DEBUG_ERROR,
- "ERROR: SSDT-CPU-TOPOLOGY: Invalid flags for cpu: 0x%x.\n",
- Generator->ProcNodeList[Index].Flags
- ));
+ Status = CheckProcNode (
+ Generator->ProcNodeList[Index].Flags,
+ TRUE,
+ Generator->ProcNodeList[Index].Token,
+ NodeToken
+ );
+ if (EFI_ERROR (Status)) {
ASSERT (0);
- return EFI_INVALID_PARAMETER;
+ return Status;
}
if (Generator->ProcNodeList[Index].OverrideNameUidEnabled) {
@@ -893,17 +952,15 @@ CreateAmlCpuTopologyTree (
} else {
// If this is not a Cpu, then this is a processor container.
- // Acpi processor Id for clusters is not handled.
- if ((Generator->ProcNodeList[Index].Flags & PPTT_PROCESSOR_MASK) !=
- PPTT_CLUSTER_PROCESSOR_MASK)
- {
- DEBUG ((
- DEBUG_ERROR,
- "ERROR: SSDT-CPU-TOPOLOGY: Invalid flags for cluster: 0x%x.\n",
- Generator->ProcNodeList[Index].Flags
- ));
+ Status = CheckProcNode (
+ Generator->ProcNodeList[Index].Flags,
+ FALSE,
+ Generator->ProcNodeList[Index].Token,
+ NodeToken
+ );
+ if (EFI_ERROR (Status)) {
ASSERT (0);
- return EFI_INVALID_PARAMETER;
+ return Status;
}
if (Generator->ProcNodeList[Index].OverrideNameUidEnabled) {
@@ -974,8 +1031,6 @@ CreateTopologyFromProcHierarchy (
)
{
EFI_STATUS Status;
- UINT32 Index;
- UINT32 TopLevelProcNodeIndex;
UINT32 ProcContainerIndex;
ASSERT (Generator != NULL);
@@ -984,8 +1039,7 @@ CreateTopologyFromProcHierarchy (
ASSERT (CfgMgrProtocol != NULL);
ASSERT (ScopeNode != NULL);
- TopLevelProcNodeIndex = MAX_UINT32;
- ProcContainerIndex = 0;
+ ProcContainerIndex = 0;
Status = TokenTableInitialize (Generator, Generator->ProcNodeCount);
if (EFI_ERROR (Status)) {
@@ -993,33 +1047,10 @@ CreateTopologyFromProcHierarchy (
return Status;
}
- // It is assumed that there is one unique CM_ARM_PROC_HIERARCHY_INFO
- // structure with no ParentToken and the EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL
- // flag set. All other CM_ARM_PROC_HIERARCHY_INFO are non-physical and
- // have a ParentToken.
- for (Index = 0; Index < Generator->ProcNodeCount; Index++) {
- if ((Generator->ProcNodeList[Index].ParentToken == CM_NULL_TOKEN) &&
- (Generator->ProcNodeList[Index].Flags &
- EFI_ACPI_6_3_PPTT_PACKAGE_PHYSICAL))
- {
- if (TopLevelProcNodeIndex != MAX_UINT32) {
- DEBUG ((
- DEBUG_ERROR,
- "ERROR: SSDT-CPU-TOPOLOGY: Top level CM_ARM_PROC_HIERARCHY_INFO "
- "must be unique\n"
- ));
- ASSERT (0);
- goto exit_handler;
- }
-
- TopLevelProcNodeIndex = Index;
- }
- } // for
-
Status = CreateAmlCpuTopologyTree (
Generator,
CfgMgrProtocol,
- Generator->ProcNodeList[TopLevelProcNodeIndex].Token,
+ CM_NULL_TOKEN,
ScopeNode,
&ProcContainerIndex
);
--
2.25.1
