[edk2-devel] [edk2-platforms][PATCH V1 10/11] Platform/ARM/SgiPkg: Add SMBIOS Type19 Table

[Pranav Madhu]

Add the SMBIOS type 19 table (Memory Array Mapped Addr) that includes
information about the address mapping for a Physical Memory Array.

Signed-off-by: Pranav Madhu <pranav.madhu at arm.com>
---
 Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.inf            |  1 +
 Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.h              |  6 ++
 Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.c              |  1 +
 Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/Type19MemoryArrayMappedAddress.c | 73 ++++++++++++++++++++
 4 files changed, 81 insertions(+)

diff --git a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.inf b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
index 7f16aef64c8e..15db3d05b6b6 100644
--- a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
+++ b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
@@ -32,6 +32,7 @@
   Type7CacheInformation.c
   Type16PhysicalMemoryArray.c
   Type17MemoryDevice.c
+  Type19MemoryArrayMappedAddress.c
 
 [Packages]
   ArmPkg/ArmPkg.dec
diff --git a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.h b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.h
index c56429541504..1cd66b759446 100644
--- a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.h
+++ b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.h
@@ -51,6 +51,12 @@ InstallMemoryDevice (
   IN     EFI_SMBIOS_PROTOCOL    *Smbios
   );
 
+EFI_STATUS
+EFIAPI
+InstallMemoryArrayMappedAddress (
+  IN     EFI_SMBIOS_PROTOCOL    *Smbios
+  );
+
 enum SMBIOS_REFRENCE_HANDLES {
   SMBIOS_HANDLE_ENCLOSURE = 0x1000,
   SMBIOS_HANDLE_CLUSTER1,
diff --git a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.c b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.c
index 464fb62d06fa..847260b24750 100644
--- a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.c
+++ b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/SmbiosPlatformDxe.c
@@ -28,6 +28,7 @@ ARM_RD_SMBIOS_TABLE_INSTALL_FPTR mSmbiosTableList[] = {
   &InstallCacheInformation,
   &InstallPhysicalMemoryArray,
   &InstallMemoryDevice,
+  &InstallMemoryArrayMappedAddress,
 };
 
 /**
diff --git a/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/Type19MemoryArrayMappedAddress.c b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/Type19MemoryArrayMappedAddress.c
new file mode 100644
index 000000000000..b34fdf754900
--- /dev/null
+++ b/Platform/ARM/SgiPkg/Drivers/SmbiosPlatformDxe/Type19MemoryArrayMappedAddress.c
@@ -0,0 +1,73 @@
+/** @file
+  SMBIOS Type 19 (Memory Array Mapped Address) table for ARM RD platforms.
+
+  Copyright (c) 2020-2021, ARM Limited. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/BaseMemoryLib.h>
+#include <Protocol/Smbios.h>
+
+#include "SmbiosPlatformDxe.h"
+
+#define TYPE19_STRINGS                                  \
+  "\0"                          /* Null string */
+
+/* SMBIOS Type19 structure */
+#pragma pack(1)
+struct ArmRdSmbiosType19 {
+  SMBIOS_TABLE_TYPE19 Base;
+  UINT8               Strings[sizeof (TYPE19_STRINGS)];
+};
+#pragma pack()
+
+/* Memory Array Mapped Address (SMBIOS 3.4 spec, section 7.20 */
+static struct ArmRdSmbiosType19 mArmRdSmbiosType19 = {
+  {
+    {
+      // SMBIOS header
+      EFI_SMBIOS_TYPE_MEMORY_ARRAY_MAPPED_ADDRESS,  // Type 19
+      sizeof (SMBIOS_TABLE_TYPE19),     // Length
+      SMBIOS_HANDLE_PI_RESERVED,        // Assign an unused handle number
+    },
+    0,                                  // Starting address
+    0,                                  // Ending address
+    SMBIOS_HANDLE_PHYSICAL_MEMORY,      // Memory array handle
+    1                                   // Partition width
+  },
+  // Text strings (unformatted area)
+  TYPE19_STRINGS
+};
+
+/**
+  Install SMBIOS Bios information Table
+
+  @retval EFI_SUCCESS           Record was added.
+  @retval EFI_OUT_OF_RESOURCES  Record was not added.
+  @retval EFI_ALREADY_STARTED   The SmbiosHandle passed in is already in use.
+**/
+EFI_STATUS
+InstallMemoryArrayMappedAddress (
+  IN     EFI_SMBIOS_PROTOCOL    *Smbios
+  )
+{
+  EFI_STATUS Status;
+  EFI_SMBIOS_HANDLE SmbiosHandle;
+
+  SmbiosHandle = ((EFI_SMBIOS_TABLE_HEADER *)&mArmRdSmbiosType19)->Handle;
+
+  mArmRdSmbiosType19.Base.StartingAddress = PcdGet64 (PcdSystemMemoryBase) / SIZE_1KB;
+  mArmRdSmbiosType19.Base.EndingAddress = ((PcdGet64 (PcdSystemMemoryBase) +
+         (PcdGet64 (PcdSystemMemorySize) + SIZE_16MB)) / // 16MB Trusted DRAM
+         SIZE_1KB) - 1;
+
+  Status = Smbios->Add (
+                     Smbios,
+                     NULL,
+                     &SmbiosHandle,
+                     (EFI_SMBIOS_TABLE_HEADER *)&mArmRdSmbiosType19
+                     );
+  return Status;
+}
-- 
2.17.1



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