1 files changed, 126 insertions, 0 deletions
diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/SmbiosView/Smbios.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/SmbiosView/Smbios.c
new file mode 100644
index 0000000000..8d21967dcc
--- /dev/null
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/SmbiosView/Smbios.c
@@ -0,0 +1,126 @@
+/** @file
+  Lib fucntions for SMBIOS. Used to get system serial number and GUID
+
+  Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "../UefiShellDebug1CommandsLib.h"
+#include <Guid/Smbios.h>
+#include "LibSmbios.h"
+
+EFI_STATUS
+LibGetSmbiosSystemGuidAndSerialNumber (
+  IN  EFI_GUID    *SystemGuid,
+  OUT CHAR8       **SystemSerialNumber
+  )
+{
+  EFI_STATUS                Status;
+  SMBIOS_STRUCTURE_TABLE    *SmbiosTable;
+  SMBIOS_STRUCTURE_POINTER  Smbios;
+  SMBIOS_STRUCTURE_POINTER  SmbiosEnd;
+  UINT16                    Index;
+
+  Status = GetSystemConfigurationTable (&gEfiSmbiosTableGuid, (VOID **) &SmbiosTable);
+  if (EFI_ERROR (Status)) {
+    return EFI_NOT_FOUND;
+  }
+
+  Smbios.Hdr    = (SMBIOS_HEADER *) ((UINTN) (SmbiosTable->TableAddress));
+
+  SmbiosEnd.Raw = (UINT8 *) ((UINTN) (SmbiosTable->TableAddress + SmbiosTable->TableLength));
+  for (Index = 0; Index < SmbiosTable->TableLength; Index++) {
+    if (Smbios.Hdr->Type == 1) {
+      if (Smbios.Hdr->Length < 0x19) {
+        //
+        // Older version did not support Guid and Serial number
+        //
+        continue;
+      }
+      //
+      // SMBIOS tables are byte packed so we need to do a byte copy to
+      //  prevend alignment faults on Itanium-based platform.
+      //
+      CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof (EFI_GUID));
+      *SystemSerialNumber = LibGetSmbiosString (&Smbios, Smbios.Type1->SerialNumber);
+      return EFI_SUCCESS;
+    }
+    //
+    // Make Smbios point to the next record
+    //
+    LibGetSmbiosString (&Smbios, (UINT16) (-1));
+
+    if (Smbios.Raw >= SmbiosEnd.Raw) {
+      //
+      // SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e.
+      // given this we must double check against the lenght of
+      // the structure. My home PC has this bug.ruthard
+      //
+      return EFI_SUCCESS;
+    }
+  }
+
+  return EFI_SUCCESS;
+}
+
+CHAR8 *
+LibGetSmbiosString (
+  IN  SMBIOS_STRUCTURE_POINTER    *Smbios,
+  IN  UINT16                      StringNumber
+  )
+/*++
+Routine Description:
+  Return SMBIOS string given the string number.
+
+  Arguments:
+      Smbios       - Pointer to SMBIOS structure
+      StringNumber - String number to return. -1 is used to skip all strings and
+                     point to the next SMBIOS structure.
+
+  Returns:
+      Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == -1
+**/
+{
+  UINT16  Index;
+  CHAR8   *String;
+
+  ASSERT (Smbios != NULL);
+
+  //
+  // Skip over formatted section
+  //
+  String = (CHAR8 *) (Smbios->Raw + Smbios->Hdr->Length);
+
+  //
+  // Look through unformated section
+  //
+  for (Index = 1; Index <= StringNumber; Index++) {
+    if (StringNumber == Index) {
+      return String;
+    }
+    //
+    // Skip string
+    //
+    for (; *String != 0; String++);
+    String++;
+
+    if (*String == 0) {
+      //
+      // If double NULL then we are done.
+      //  Retrun pointer to next structure in Smbios.
+      //  if you pass in a -1 you will always get here
+      //
+      Smbios->Raw = (UINT8 *)++String;
+      return NULL;
+    }
+  }
+
+  return NULL;
+}