[edk2-platforms PATCH v4 0/4] Platform/Qemu/SbsaQemu: Add SMBIOS tables

[edk2-platforms PATCH v4 0/4] Platform/Qemu/SbsaQemu: Add SMBIOS tables

[Rebecca Cran]

o Add SMBIOS 3.4.0 tables using ArmPkg/Universal/Smbios.
o Bump the PcdSmbiosVersion PCD from 0x300 to 0x304 to indicate support
  for SMBIOS 3.4.0, as is required by SBBR.
o Add an implementation of OemMiscLib that provides the system
  information. The serial numbers, asset tags etc. are currently all
  fixed strings, to allow fwts to pass without errors.
o Add SMBIOS PCDs to identify the platform. The processor serial
  number, asset tag and part number are populated because otherwise
  fwts reports errors.

Changes between v3 and v4

o Renamed function in FdtHelperLib to FdtHelperCountCpus.
o Renamed 'mHiiHandle' parameter in OemUpdateSmbiosInfo to 'HiiHandle'.
o Added a patch to add CoreIndex variable into AddMadtTable.
o Added setting of PcdCoreCount into InitializeSbsaQemuAcpiDxe.


Rebecca Cran (4):
  SbsaQemu: Add FdtHelperLib
  SbsaQemu: Update SbsaQemuAcpiDxe to use FdtHelperLib
  Platform/Qemu/SbsaQemu: Add SMBIOS tables
  Silicon/Qemu: Don't re-use NumCores as loop index in AddMadtTable

 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c                    | 242 ++++++++++++++++++++
 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf                  |  53 +++++
 Platform/Qemu/SbsaQemu/SbsaQemu.dsc                               |  50 +++-
 Platform/Qemu/SbsaQemu/SbsaQemu.fdf                               |   7 +
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c   |  62 +----
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf |   1 +
 Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h              |  24 ++
 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c         |  62 +++++
 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf       |  28 +++
 Silicon/Qemu/SbsaQemu/SbsaQemu.dec                                |  18 ++
 10 files changed, 493 insertions(+), 54 deletions(-)
 create mode 100644 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c
 create mode 100644 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf
 create mode 100644 Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h
 create mode 100644 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c
 create mode 100644 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf

-- 
2.26.2

[edk2-platforms PATCH v4 1/4] SbsaQemu: Add FdtHelperLib

[Rebecca Cran]

The CountCpusFromFdt function is now used in two places. Create
FdtHelperLib for this and similar functions.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
 Platform/Qemu/SbsaQemu/SbsaQemu.dsc                             |  2 +
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c |  5 +-
 Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h            | 24 ++++++++
 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c       | 62 ++++++++++++++++++++
 Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf     | 28 +++++++++
 5 files changed, 120 insertions(+), 1 deletion(-)

diff --git a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
index f6af3f9111ee..8faad3eda217 100644
--- a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
+++ b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
@@ -121,6 +121,8 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
   # ARM PL011 UART Driver
   PL011UartLib|ArmPlatformPkg/Library/PL011UartLib/PL011UartLib.inf
 
+  FdtHelperLib|Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
+
   # Debug Support
   PeCoffExtraActionLib|ArmPkg/Library/DebugPeCoffExtraActionLib/DebugPeCoffExtraActionLib.inf
   DebugAgentLib|MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.inf
diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
index fb7c1835c3d7..7bf60cd2ded1 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
@@ -487,9 +487,12 @@ InitializeSbsaQemuAcpiDxe (
 {
   EFI_STATUS                     Status;
   EFI_ACPI_TABLE_PROTOCOL        *AcpiTable;
+  UINT32                         NumCores;
 
   // Parse the device tree and get the number of CPUs
-  CountCpusFromFdt ();
+  NumCores = FdtHelperCountCpus ();
+  Status = PcdSet32S (PcdCoreCount, NumCores);
+  ASSERT_RETURN_ERROR (Status);
 
   // Check if ACPI Table Protocol has been installed
   Status = gBS->LocateProtocol (
diff --git a/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h b/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h
new file mode 100644
index 000000000000..e9e7281c1342
--- /dev/null
+++ b/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h
@@ -0,0 +1,24 @@
+/** @file
+*  FdtHelperLib.h
+*
+*  Copyright (c) 2021, NUVIA Inc. All rights reserved.
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#ifndef FDT_HELPER_LIB_
+#define FDT_HELPER_LIB_
+
+/** Walks through the Device Tree created by Qemu and counts the number
+    of CPUs present in it.
+
+    @return The number of CPUs present.
+**/
+EFIAPI
+UINT32
+FdtHelperCountCpus (
+  VOID
+  );
+
+#endif /* FDT_HELPER_LIB_ */
diff --git a/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c
new file mode 100644
index 000000000000..411f035ee7d8
--- /dev/null
+++ b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c
@@ -0,0 +1,62 @@
+/** @file
+*  FdtHelperLib.c
+*
+*  Copyright (c) 2021, NUVIA Inc. All rights reserved.
+*  Copyright (c) 2020, Linaro Ltd. All rights reserved.
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Uefi.h>
+#include <Library/DebugLib.h>
+#include <Library/FdtHelperLib.h>
+#include <Library/PcdLib.h>
+#include <libfdt.h>
+
+/** Walks through the Device Tree created by Qemu and counts the number
+    of CPUs present in it.
+
+    @return The number of CPUs present.
+**/
+EFIAPI
+UINT32
+FdtHelperCountCpus (
+  VOID
+  )
+{
+  VOID   *DeviceTreeBase;
+  INT32  Node;
+  INT32  Prev;
+  INT32  CpuNode;
+  UINT32 CpuCount;
+
+  DeviceTreeBase = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeBaseAddress);
+  ASSERT (DeviceTreeBase != NULL);
+
+  // Make sure we have a valid device tree blob
+  ASSERT (fdt_check_header (DeviceTreeBase) == 0);
+
+  CpuNode = fdt_path_offset (DeviceTreeBase, "/cpus");
+  if (CpuNode <= 0) {
+    DEBUG ((DEBUG_ERROR, "Unable to locate /cpus in device tree\n"));
+    return 0;
+  }
+
+  CpuCount = 0;
+
+  // Walk through /cpus node and count the number of subnodes.
+  // The count of these subnodes corresponds to the number of
+  // CPUs created by Qemu.
+  Prev = fdt_first_subnode (DeviceTreeBase, CpuNode);
+  while (1) {
+    CpuCount++;
+    Node = fdt_next_subnode (DeviceTreeBase, Prev);
+    if (Node < 0) {
+      break;
+    }
+    Prev = Node;
+  }
+
+  return CpuCount;
+}
diff --git a/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
new file mode 100644
index 000000000000..d84c16f888d1
--- /dev/null
+++ b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
@@ -0,0 +1,28 @@
+#/** @file
+#
+#  Component description file for FdtHelperLib module
+#
+#  Copyright (c) 2021, NUVIA Inc. All rights reserved.
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 1.29
+  BASE_NAME                      = FdtHelperLib
+  FILE_GUID                      = 34e4396f-c2fc-4f9e-ad58-0f98e99e3875
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = FdtHelperLib
+
+[Sources.common]
+  FdtHelperLib.c
+
+[Packages]
+  EmbeddedPkg/EmbeddedPkg.dec
+  MdePkg/MdePkg.dec
+  Silicon/Qemu/SbsaQemu/SbsaQemu.dec
+
+[FixedPcd]
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdDeviceTreeBaseAddress
-- 
2.26.2

[edk2-platforms PATCH v4 2/4] SbsaQemu: Update SbsaQemuAcpiDxe to use FdtHelperLib

[Rebecca Cran]

Use FdtHelperCountCpus from FdtHelperLib.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c   | 50 +-------------------
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf |  1 +
 2 files changed, 2 insertions(+), 49 deletions(-)

diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
index 7bf60cd2ded1..037c7cff4c18 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
@@ -12,6 +12,7 @@
 #include <Library/AcpiLib.h>
 #include <Library/BaseMemoryLib.h>
 #include <Library/DebugLib.h>
+#include <Library/FdtHelperLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PcdLib.h>
 #include <Library/PrintLib.h>
@@ -25,55 +26,6 @@
 STATIC INT32 FdtFirstCpuOffset;
 STATIC INT32 FdtCpuNodeSize;
 
-/*
- * A function that walks through the Device Tree created
- * by Qemu and counts the number of CPUs present in it.
- */
-STATIC
-VOID
-CountCpusFromFdt (
-  VOID
-)
-{
-  VOID           *DeviceTreeBase;
-  INT32          Node, Prev;
-  RETURN_STATUS  PcdStatus;
-  INT32          CpuNode;
-  INT32          CpuCount;
-
-  DeviceTreeBase = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeBaseAddress);
-  ASSERT (DeviceTreeBase != NULL);
-
-  // Make sure we have a valid device tree blob
-  ASSERT (fdt_check_header (DeviceTreeBase) == 0);
-
-  CpuNode = fdt_path_offset (DeviceTreeBase, "/cpus");
-  if (CpuNode <= 0) {
-    DEBUG ((DEBUG_ERROR, "Unable to locate /cpus in device tree\n"));
-    return;
-  }
-
-  CpuCount = 0;
-
-  // Walk through /cpus node and count the number of subnodes.
-  // The count of these subnodes corresponds to the number of
-  // CPUs created by Qemu.
-  Prev = fdt_first_subnode (DeviceTreeBase, CpuNode);
-  FdtFirstCpuOffset = Prev;
-  while (1) {
-    CpuCount++;
-    Node = fdt_next_subnode (DeviceTreeBase, Prev);
-    if (Node < 0) {
-      break;
-    }
-    FdtCpuNodeSize = Node - Prev;
-    Prev = Node;
-  }
-
-  PcdStatus = PcdSet32S (PcdCoreCount, CpuCount);
-  ASSERT_RETURN_ERROR (PcdStatus);
-}
-
 /*
  * Get MPIDR from device tree passed by Qemu
  */
diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf
index 127eef029f3c..a58ebfaf76d5 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.inf
@@ -34,6 +34,7 @@
   BaseLib
   DebugLib
   DxeServicesLib
+  FdtHelperLib
   FdtLib
   PcdLib
   PrintLib
-- 
2.26.2

[edk2-platforms PATCH v4 3/4] Platform/Qemu/SbsaQemu: Add SMBIOS tables

[Rebecca Cran]

o Add SMBIOS 3.4.0 tables using ArmPkg/Universal/Smbios.
o Bump the PcdSmbiosVersion PCD from 0x300 to 0x304 to indicate support
  for SMBIOS 3.4.0, as is required by SBBR.
o Add an implementation of OemMiscLib that provides the system
  information. The serial numbers, asset tags etc. are currently all
  fixed strings, to allow fwts to pass without errors.
o Add SMBIOS PCDs to identify the platform. The processor serial
  number, asset tag and part number are populated because otherwise
  fwts reports errors.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c   | 242 ++++++++++++++++++++
 Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf |  53 +++++
 Platform/Qemu/SbsaQemu/SbsaQemu.dsc              |  48 +++-
 Platform/Qemu/SbsaQemu/SbsaQemu.fdf              |   7 +
 Silicon/Qemu/SbsaQemu/SbsaQemu.dec               |  18 ++
 5 files changed, 367 insertions(+), 1 deletion(-)

diff --git a/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c b/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c
new file mode 100644
index 000000000000..11340788aadf
--- /dev/null
+++ b/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.c
@@ -0,0 +1,242 @@
+/** @file
+*  OemMiscLib.c
+*
+*  Copyright (c) 2021, NUVIA Inc. All rights reserved.
+*  Copyright (c) 2020, Linaro Ltd. All rights reserved.
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Uefi.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/FdtHelperLib.h>
+#include <Library/HiiLib.h>
+#include <Library/IoLib.h>
+#include <Library/OemMiscLib.h>
+#include <Library/PcdLib.h>
+#include <Library/SerialPortLib.h>
+#include <Library/TimerLib.h>
+#include <libfdt.h>
+
+/** Returns whether the specified processor is present or not.
+
+  @param ProcessorIndex The processor index to check.
+
+  @return TRUE if the processor is present, FALSE otherwise.
+**/
+BOOLEAN
+EFIAPI
+OemIsProcessorPresent (
+  UINTN ProcessorIndex
+  )
+{
+  if (ProcessorIndex < FdtHelperCountCpus ()) {
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+/** Gets the CPU frequency of the specified processor.
+
+  @param ProcessorIndex Index of the processor to get the frequency for.
+
+  @return               CPU frequency in Hz
+**/
+UINTN
+EFIAPI
+OemGetCpuFreq (
+  UINT8 ProcessorIndex
+  )
+{
+  return 2000000000; // 2 GHz
+}
+
+/** Gets information about the specified processor and stores it in
+    the structures provided.
+
+  @param ProcessorIndex  Index of the processor to get the information for.
+  @param ProcessorStatus Processor status.
+  @param ProcessorCharacteristics Processor characteritics.
+  @param MiscProcessorData        Miscellaneous processor information.
+
+  @return  TRUE on success, FALSE on failure.
+**/
+BOOLEAN
+EFIAPI
+OemGetProcessorInformation (
+  IN  UINTN                             ProcessorIndex,
+  IN OUT PROCESSOR_STATUS_DATA          *ProcessorStatus,
+  IN OUT PROCESSOR_CHARACTERISTIC_FLAGS *ProcessorCharacteristics,
+  IN OUT OEM_MISC_PROCESSOR_DATA        *MiscProcessorData
+  )
+{
+  UINT16 ProcessorCount;
+
+  ProcessorCount = FdtHelperCountCpus ();
+
+  if (ProcessorIndex < ProcessorCount) {
+    ProcessorStatus->Bits.CpuStatus       = 1; // CPU enabled
+    ProcessorStatus->Bits.Reserved1       = 0;
+    ProcessorStatus->Bits.SocketPopulated = 1;
+    ProcessorStatus->Bits.Reserved2       = 0;
+  } else {
+    ProcessorStatus->Bits.CpuStatus       = 0; // CPU disabled
+    ProcessorStatus->Bits.Reserved1       = 0;
+    ProcessorStatus->Bits.SocketPopulated = 0;
+    ProcessorStatus->Bits.Reserved2       = 0;
+  }
+
+  ProcessorCharacteristics->ProcessorReserved1      = 0;
+  ProcessorCharacteristics->ProcessorUnknown        = 0;
+  ProcessorCharacteristics->Processor64BitCapable   = 1;
+  ProcessorCharacteristics->ProcessorMultiCore      = 0;
+  ProcessorCharacteristics->ProcessorHardwareThread = 0;
+  ProcessorCharacteristics->ProcessorExecuteProtection      = 1;
+  ProcessorCharacteristics->ProcessorEnhancedVirtualization = 0;
+  ProcessorCharacteristics->ProcessorPowerPerformanceCtrl   = 0;
+  ProcessorCharacteristics->Processor128BitCapable = 0;
+  ProcessorCharacteristics->ProcessorArm64SocId = 1;
+  ProcessorCharacteristics->ProcessorReserved2  = 0;
+
+  MiscProcessorData->CurrentSpeed = 2000;
+  MiscProcessorData->MaxSpeed     = 2000;
+  MiscProcessorData->CoreCount    = 1;
+  MiscProcessorData->CoresEnabled = 1;
+  MiscProcessorData->ThreadCount  = 1;
+
+  return TRUE;
+}
+
+/** Gets the maximum number of processors supported by the platform.
+
+  @return The maximum number of processors.
+**/
+UINT8
+EFIAPI
+OemGetMaxProcessors (
+  VOID
+  )
+{
+  return FdtHelperCountCpus ();
+}
+
+/** Gets information about the cache at the specified cache level.
+
+  @param ProcessorIndex The processor to get information for.
+  @param CacheLevel     The cache level to get information for.
+  @param DataCache      Whether the cache is a data cache.
+  @param UnifiedCache   Whether the cache is a unified cache.
+  @param SmbiosCacheTable The SMBIOS Type7 cache information structure.
+
+  @return TRUE on success, FALSE on failure.
+**/
+BOOLEAN
+EFIAPI
+OemGetCacheInformation (
+  IN UINT8     ProcessorIndex,
+  IN UINT8     CacheLevel,
+  IN BOOLEAN   DataCache,
+  IN BOOLEAN   UnifiedCache,
+  IN OUT SMBIOS_TABLE_TYPE7 *SmbiosCacheTable
+  )
+{
+  SmbiosCacheTable->CacheConfiguration = CacheLevel - 1;
+
+  if (CacheLevel == 1 && !DataCache && !UnifiedCache) {
+    // Unknown operational mode
+    SmbiosCacheTable->CacheConfiguration |= (3 << 8);
+  } else {
+    // Write back operational mode
+    SmbiosCacheTable->CacheConfiguration |= (1 << 8);
+  }
+
+  return TRUE;
+}
+
+/** Gets the type of chassis for the system.
+
+  @retval The type of the chassis.
+**/
+MISC_CHASSIS_TYPE
+EFIAPI
+OemGetChassisType (
+  VOID
+  )
+{
+  return MiscChassisTypeMainServerChassis;
+}
+
+/** Updates the HII string for the specified field.
+
+  @param HiiHandle     The HII handle.
+  @param TokenToUpdate The string to update.
+  @param Field         The field to get information about.
+**/
+VOID
+EFIAPI
+OemUpdateSmbiosInfo (
+  IN EFI_HII_HANDLE HiiHandle,
+  IN EFI_STRING_ID TokenToUpdate,
+  IN OEM_MISC_SMBIOS_HII_STRING_FIELD Field
+  )
+{
+  CHAR16 *String;
+
+  // These values are fixed for now, but should be configurable via
+  // something like an emulated SCP.
+  switch (Field) {
+    case SystemManufacturerType01:
+      String = (CHAR16*)PcdGetPtr (PcdSystemManufacturer);
+      break;
+    case SerialNumType01:
+      String = (CHAR16*)PcdGetPtr (PcdSystemSerialNumber);
+      break;
+    case SkuNumberType01:
+      String = (CHAR16*)PcdGetPtr (PcdSystemSKU);
+      break;
+    case FamilyType01:
+      String = (CHAR16*)PcdGetPtr (PcdSystemFamily);
+      break;
+    case AssertTagType02:
+      String = (CHAR16*)PcdGetPtr (PcdBaseBoardAssetTag);
+      break;
+    case SerialNumberType02:
+      String = (CHAR16*)PcdGetPtr (PcdBaseBoardSerialNumber);
+      break;
+    case BoardManufacturerType02:
+      String = (CHAR16*)PcdGetPtr (PcdBaseBoardManufacturer);
+      break;
+    case SkuNumberType02:
+      String = (CHAR16*)PcdGetPtr (PcdBaseBoardSKU);
+      break;
+    case ChassisLocationType02:
+      String = (CHAR16*)PcdGetPtr (PcdBaseBoardLocation);
+      break;
+    case SerialNumberType03:
+      String = (CHAR16*)PcdGetPtr (PcdChassisSerialNumber);
+      break;
+    case VersionType03:
+      String = (CHAR16*)PcdGetPtr (PcdChassisVersion);
+      break;
+    case ManufacturerType03:
+      String = (CHAR16*)PcdGetPtr (PcdChassisManufacturer);
+      break;
+    case AssetTagType03:
+      String = (CHAR16*)PcdGetPtr (PcdChassisAssetTag);
+      break;
+    case SkuNumberType03:
+      String = (CHAR16*)PcdGetPtr (PcdChassisSKU);
+      break;
+    default:
+      String = NULL;
+      break;
+  }
+
+  if (String != NULL) {
+    HiiSetString (HiiHandle, TokenToUpdate, String, NULL);
+  }
+}
+
diff --git a/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf b/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf
new file mode 100644
index 000000000000..04a07a55cee9
--- /dev/null
+++ b/Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf
@@ -0,0 +1,53 @@
+#/** @file
+#    OemMiscLib.inf
+#
+#    Copyright (c) 2021, NUVIA Inc. All rights reserved.
+#    Copyright (c) 2018, Hisilicon Limited. All rights reserved.
+#    Copyright (c) 2018, Linaro Limited. All rights reserved.
+#
+#    SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 1.29
+  BASE_NAME                      = OemMiscLib
+  FILE_GUID                      = 958caf90-9e55-4e2a-86e0-71da21485e2c
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = OemMiscLib
+
+[Sources.common]
+  OemMiscLib.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  MdePkg/MdePkg.dec
+  Silicon/Qemu/SbsaQemu/SbsaQemu.dec
+
+[LibraryClasses]
+  BaseMemoryLib
+  FdtLib
+  FdtHelperLib
+  IoLib
+  PcdLib
+
+[Pcd]
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdDeviceTreeBaseAddress
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemManufacturer
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSerialNumber
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSKU
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemFamily
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardAssetTag
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSerialNumber
+  gArmTokenSpaceGuid.PcdBaseBoardManufacturer
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSKU
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardLocation
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSerialNumber
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisVersion
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisManufacturer
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisAssetTag
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSKU
diff --git a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
index 8faad3eda217..c1f8a4696560 100644
--- a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
+++ b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
@@ -1,4 +1,5 @@
 #
+#  Copyright (c) 2021, NUVIA Inc. All rights reserved.
 #  Copyright (c) 2019, Linaro Limited. All rights reserved.
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -122,6 +123,7 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
   PL011UartLib|ArmPlatformPkg/Library/PL011UartLib/PL011UartLib.inf
 
   FdtHelperLib|Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
+  OemMiscLib|Platform/Qemu/SbsaQemu/OemMiscLib/OemMiscLib.inf
 
   # Debug Support
   PeCoffExtraActionLib|ArmPkg/Library/DebugPeCoffExtraActionLib/DebugPeCoffExtraActionLib.inf
@@ -486,6 +488,23 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
   #  enumeration to complete before installing ACPI tables.
   gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|FALSE
 
+  gArmTokenSpaceGuid.PcdSystemProductName|L"QEMU SBSA-REF Machine"
+  gArmTokenSpaceGuid.PcdSystemVersion|L"1.0"
+  gArmTokenSpaceGuid.PcdBaseBoardManufacturer|L"QEMU"
+  gArmTokenSpaceGuid.PcdBaseBoardProductName|L"SBSA-REF"
+  gArmTokenSpaceGuid.PcdBaseBoardVersion|L"1.0"
+
+  # These values are fixed for now, but should be configurable via
+  # something like an emulated SCP.
+  gArmTokenSpaceGuid.PcdProcessorManufacturer|L"QEMU"
+  gArmTokenSpaceGuid.PcdProcessorVersion|L"arm-virt"
+  gArmTokenSpaceGuid.PcdProcessorSerialNumber|L"SN0000"
+  gArmTokenSpaceGuid.PcdProcessorAssetTag|L"AT0000"
+  gArmTokenSpaceGuid.PcdProcessorPartNumber|L"PN0000"
+
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVendor|L"EFI Development Kit II / SbsaQemu"
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString|L"1.0"
+
 [PcdsDynamicDefault.common]
   gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|3
 
@@ -510,9 +529,28 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
   #
   # SMBIOS entry point version
   #
-  gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion|0x0300
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion|0x0304
   gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosDocRev|0x0
 
+  gArmTokenSpaceGuid.PcdSystemBiosRelease|0x0100
+  gArmTokenSpaceGuid.PcdEmbeddedControllerFirmwareRelease|0x0100
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemManufacturer|L"QEMU"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSerialNumber|L"SN0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSKU|L"SK0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemFamily|L"ArmVirt"
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardAssetTag|L"AT0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSerialNumber|L"SN0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSKU|L"SK000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardLocation|L"Internal"
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSerialNumber|L"SN0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisVersion|L"1.0"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisManufacturer|L"QEMU"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisAssetTag|L"AT0000"
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSKU|L"SK0000"
+
 ################################################################################
 #
 # Components Section - list of all EDK II Modules needed by this Platform
@@ -670,6 +708,14 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
   MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBusDxe.inf
   MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDiskDxe.inf
 
+  #
+  # SMBIOS support
+  #
+  ArmPkg/Universal/Smbios/ProcessorSubClassDxe/ProcessorSubClassDxe.inf
+  ArmPkg/Universal/Smbios/SmbiosMiscDxe/SmbiosMiscDxe.inf
+  EmbeddedPkg/Library/FdtLib/FdtLib.inf
+  MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf
+
   #
   # PCI support
   #
diff --git a/Platform/Qemu/SbsaQemu/SbsaQemu.fdf b/Platform/Qemu/SbsaQemu/SbsaQemu.fdf
index 3bcf0bf0040a..c35e3ed44054 100644
--- a/Platform/Qemu/SbsaQemu/SbsaQemu.fdf
+++ b/Platform/Qemu/SbsaQemu/SbsaQemu.fdf
@@ -236,6 +236,13 @@ READ_LOCK_STATUS   = TRUE
   INF RuleOverride = ACPITABLE Silicon/Qemu/SbsaQemu/AcpiTables/AcpiTables.inf
   INF MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf
 
+  #
+  # SMBIOS support
+  #
+  INF ArmPkg/Universal/Smbios/ProcessorSubClassDxe/ProcessorSubClassDxe.inf
+  INF ArmPkg/Universal/Smbios/SmbiosMiscDxe/SmbiosMiscDxe.inf
+  INF MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf
+
   #
   # PCI support
   #
diff --git a/Silicon/Qemu/SbsaQemu/SbsaQemu.dec b/Silicon/Qemu/SbsaQemu/SbsaQemu.dec
index 476dc82f98f3..3abc9b64e49e 100644
--- a/Silicon/Qemu/SbsaQemu/SbsaQemu.dec
+++ b/Silicon/Qemu/SbsaQemu/SbsaQemu.dec
@@ -50,3 +50,21 @@
 [PcdsDynamic.common]
   gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdCoreCount|0x1|UINT32|0x00000100
   gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdClusterCount|0x1|UINT32|0x00000101
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemManufacturer|L""|VOID*|0x00000110
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSerialNumber|L""|VOID*|0x00000111
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemSKU|L""|VOID*|0x00000112
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdSystemFamily|L""|VOID*|0x00000113
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardAssetTag|L""|VOID*|0x00000114
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSerialNumber|L""|VOID*|0x00000115
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardManufacturer|L""|VOID*|0x00000116
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardSKU|L""|VOID*|0x00000117
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdBaseBoardLocation|L""|VOID*|0x00000118
+
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSerialNumber|L""|VOID*|0x00000119
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisVersion|L""|VOID*|0x0000011A
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisManufacturer|L""|VOID*|0x0000011B
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisAssetTag|L""|VOID*|0x0000011C
+  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdChassisSKU|L""|VOID*|0x0000011D
+
-- 
2.26.2

[edk2-platforms PATCH v4 4/4] Silicon/Qemu: Don't re-use NumCores as loop index in AddMadtTable

[Rebecca Cran]

Avoid re-using the NumCores variable as a loop index, in AddMadtTable:
add a new CoreIndex variable for that purpose.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
 Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
index 037c7cff4c18..84120f1c1b51 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
@@ -88,6 +88,7 @@ AddMadtTable (
   EFI_PHYSICAL_ADDRESS  PageAddress;
   UINT8                 *New;
   UINT32                NumCores;
+  UINT32                CoreIndex;
 
   // Initialize MADT ACPI Header
   EFI_ACPI_6_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER Header = {
@@ -152,13 +153,13 @@ AddMadtTable (
   New += sizeof (EFI_ACPI_6_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER);
 
   // Add new GICC structures for the Cores
-  for (NumCores = 0; NumCores < PcdGet32 (PcdCoreCount); NumCores++) {
+  for (CoreIndex = 0; CoreIndex < PcdGet32 (PcdCoreCount); CoreIndex++) {
     EFI_ACPI_6_0_GIC_STRUCTURE *GiccPtr;
 
     CopyMem (New, &Gicc, sizeof (EFI_ACPI_6_0_GIC_STRUCTURE));
     GiccPtr = (EFI_ACPI_6_0_GIC_STRUCTURE *) New;
-    GiccPtr->AcpiProcessorUid = NumCores;
-    GiccPtr->MPIDR = GetMpidr (NumCores);
+    GiccPtr->AcpiProcessorUid = CoreIndex;
+    GiccPtr->MPIDR = GetMpidr (CoreIndex);
     New += sizeof (EFI_ACPI_6_0_GIC_STRUCTURE);
   }
 
-- 
2.26.2

Re: [edk2-platforms PATCH v4 1/4] SbsaQemu: Add FdtHelperLib

[Leif Lindholm]

On Tue, Feb 23, 2021 at 07:26:32 -0700, Rebecca Cran wrote:
> The CountCpusFromFdt function is now used in two places. Create
> FdtHelperLib for this and similar functions.
> 
> Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
> ---
>  Platform/Qemu/SbsaQemu/SbsaQemu.dsc                             |  2 +
>  Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c |  5 +-
>  Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h            | 24 ++++++++
>  Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c       | 62 ++++++++++++++++++++
>  Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf     | 28 +++++++++
>  5 files changed, 120 insertions(+), 1 deletion(-)
> 
> diff --git a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
> index f6af3f9111ee..8faad3eda217 100644
> --- a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
> +++ b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
> @@ -121,6 +121,8 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
>    # ARM PL011 UART Driver
>    PL011UartLib|ArmPlatformPkg/Library/PL011UartLib/PL011UartLib.inf
>  
> +  FdtHelperLib|Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
> +
>    # Debug Support
>    PeCoffExtraActionLib|ArmPkg/Library/DebugPeCoffExtraActionLib/DebugPeCoffExtraActionLib.inf
>    DebugAgentLib|MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.inf
> diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
> index fb7c1835c3d7..7bf60cd2ded1 100644
> --- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
> +++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
> @@ -487,9 +487,12 @@ InitializeSbsaQemuAcpiDxe (
>  {
>    EFI_STATUS                     Status;
>    EFI_ACPI_TABLE_PROTOCOL        *AcpiTable;
> +  UINT32                         NumCores;
>  
>    // Parse the device tree and get the number of CPUs
> -  CountCpusFromFdt ();
> +  NumCores = FdtHelperCountCpus ();
> +  Status = PcdSet32S (PcdCoreCount, NumCores);
> +  ASSERT_RETURN_ERROR (Status);
>  
>    // Check if ACPI Table Protocol has been installed
>    Status = gBS->LocateProtocol (

Would this hunk make more sense in 2/4?
(I think it breaks bisect here.)

No further comments on this set, I think is thise moves, the set can
go in.

/
    Leif

> diff --git a/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h b/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h
> new file mode 100644
> index 000000000000..e9e7281c1342
> --- /dev/null
> +++ b/Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h
> @@ -0,0 +1,24 @@
> +/** @file
> +*  FdtHelperLib.h
> +*
> +*  Copyright (c) 2021, NUVIA Inc. All rights reserved.
> +*
> +*  SPDX-License-Identifier: BSD-2-Clause-Patent
> +*
> +**/
> +
> +#ifndef FDT_HELPER_LIB_
> +#define FDT_HELPER_LIB_
> +
> +/** Walks through the Device Tree created by Qemu and counts the number
> +    of CPUs present in it.
> +
> +    @return The number of CPUs present.
> +**/
> +EFIAPI
> +UINT32
> +FdtHelperCountCpus (
> +  VOID
> +  );
> +
> +#endif /* FDT_HELPER_LIB_ */
> diff --git a/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c
> new file mode 100644
> index 000000000000..411f035ee7d8
> --- /dev/null
> +++ b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c
> @@ -0,0 +1,62 @@
> +/** @file
> +*  FdtHelperLib.c
> +*
> +*  Copyright (c) 2021, NUVIA Inc. All rights reserved.
> +*  Copyright (c) 2020, Linaro Ltd. All rights reserved.
> +*
> +*  SPDX-License-Identifier: BSD-2-Clause-Patent
> +*
> +**/
> +
> +#include <Uefi.h>
> +#include <Library/DebugLib.h>
> +#include <Library/FdtHelperLib.h>
> +#include <Library/PcdLib.h>
> +#include <libfdt.h>
> +
> +/** Walks through the Device Tree created by Qemu and counts the number
> +    of CPUs present in it.
> +
> +    @return The number of CPUs present.
> +**/
> +EFIAPI
> +UINT32
> +FdtHelperCountCpus (
> +  VOID
> +  )
> +{
> +  VOID   *DeviceTreeBase;
> +  INT32  Node;
> +  INT32  Prev;
> +  INT32  CpuNode;
> +  UINT32 CpuCount;
> +
> +  DeviceTreeBase = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeBaseAddress);
> +  ASSERT (DeviceTreeBase != NULL);
> +
> +  // Make sure we have a valid device tree blob
> +  ASSERT (fdt_check_header (DeviceTreeBase) == 0);
> +
> +  CpuNode = fdt_path_offset (DeviceTreeBase, "/cpus");
> +  if (CpuNode <= 0) {
> +    DEBUG ((DEBUG_ERROR, "Unable to locate /cpus in device tree\n"));
> +    return 0;
> +  }
> +
> +  CpuCount = 0;
> +
> +  // Walk through /cpus node and count the number of subnodes.
> +  // The count of these subnodes corresponds to the number of
> +  // CPUs created by Qemu.
> +  Prev = fdt_first_subnode (DeviceTreeBase, CpuNode);
> +  while (1) {
> +    CpuCount++;
> +    Node = fdt_next_subnode (DeviceTreeBase, Prev);
> +    if (Node < 0) {
> +      break;
> +    }
> +    Prev = Node;
> +  }
> +
> +  return CpuCount;
> +}
> diff --git a/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
> new file mode 100644
> index 000000000000..d84c16f888d1
> --- /dev/null
> +++ b/Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
> @@ -0,0 +1,28 @@
> +#/** @file
> +#
> +#  Component description file for FdtHelperLib module
> +#
> +#  Copyright (c) 2021, NUVIA Inc. All rights reserved.
> +#
> +#  SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#**/
> +
> +[Defines]
> +  INF_VERSION                    = 1.29
> +  BASE_NAME                      = FdtHelperLib
> +  FILE_GUID                      = 34e4396f-c2fc-4f9e-ad58-0f98e99e3875
> +  MODULE_TYPE                    = BASE
> +  VERSION_STRING                 = 1.0
> +  LIBRARY_CLASS                  = FdtHelperLib
> +
> +[Sources.common]
> +  FdtHelperLib.c
> +
> +[Packages]
> +  EmbeddedPkg/EmbeddedPkg.dec
> +  MdePkg/MdePkg.dec
> +  Silicon/Qemu/SbsaQemu/SbsaQemu.dec
> +
> +[FixedPcd]
> +  gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdDeviceTreeBaseAddress
> -- 
> 2.26.2
> 

Re: [edk2-platforms PATCH v4 1/4] SbsaQemu: Add FdtHelperLib

[Rebecca Cran]

On 2/23/21 9:32 AM, Leif Lindholm wrote:
> On Tue, Feb 23, 2021 at 07:26:32 -0700, Rebecca Cran wrote:
>> The CountCpusFromFdt function is now used in two places. Create
>> FdtHelperLib for this and similar functions.
>>
>> Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
>> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
>> ---
>>   Platform/Qemu/SbsaQemu/SbsaQemu.dsc                             |  2 +
>>   Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c |  5 +-
>>   Silicon/Qemu/SbsaQemu/Include/Library/FdtHelperLib.h            | 24 ++++++++
>>   Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.c       | 62 ++++++++++++++++++++
>>   Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf     | 28 +++++++++
>>   5 files changed, 120 insertions(+), 1 deletion(-)
>>
>> diff --git a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
>> index f6af3f9111ee..8faad3eda217 100644
>> --- a/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
>> +++ b/Platform/Qemu/SbsaQemu/SbsaQemu.dsc
>> @@ -121,6 +121,8 @@ DEFINE NETWORK_HTTP_BOOT_ENABLE       = FALSE
>>     # ARM PL011 UART Driver
>>     PL011UartLib|ArmPlatformPkg/Library/PL011UartLib/PL011UartLib.inf
>>   
>> +  FdtHelperLib|Silicon/Qemu/SbsaQemu/Library/FdtHelperLib/FdtHelperLib.inf
>> +
>>     # Debug Support
>>     PeCoffExtraActionLib|ArmPkg/Library/DebugPeCoffExtraActionLib/DebugPeCoffExtraActionLib.inf
>>     DebugAgentLib|MdeModulePkg/Library/DebugAgentLibNull/DebugAgentLibNull.inf
>> diff --git a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
>> index fb7c1835c3d7..7bf60cd2ded1 100644
>> --- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
>> +++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuAcpiDxe/SbsaQemuAcpiDxe.c
>> @@ -487,9 +487,12 @@ InitializeSbsaQemuAcpiDxe (
>>   {
>>     EFI_STATUS                     Status;
>>     EFI_ACPI_TABLE_PROTOCOL        *AcpiTable;
>> +  UINT32                         NumCores;
>>   
>>     // Parse the device tree and get the number of CPUs
>> -  CountCpusFromFdt ();
>> +  NumCores = FdtHelperCountCpus ();
>> +  Status = PcdSet32S (PcdCoreCount, NumCores);
>> +  ASSERT_RETURN_ERROR (Status);
>>   
>>     // Check if ACPI Table Protocol has been installed
>>     Status = gBS->LocateProtocol (
> 
> Would this hunk make more sense in 2/4?
> (I think it breaks bisect here.)
> 
> No further comments on this set, I think is thise moves, the set can
> go in.

Umm, yes it should be in 2/4 - apologies. I'll work to improve verifying 
which patches changes are in.

I've just sent out a v5.

-- 
Rebecca Cran