diff options
Diffstat (limited to 'ShellPkg/Library/UefiShellDebug1CommandsLib/SmbiosView/Smbios.c')
-rw-r--r-- | ShellPkg/Library/UefiShellDebug1CommandsLib/SmbiosView/Smbios.c | 126 |
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;
+}
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