According to UEFI spec 2.3.1a. hardware error record variable should use the EFI_HARDWARE_ERROR_VARIABLE VendorGuid and have the L"HwErrRec####" name convention, #### is a printed hex value and no 0x or h is included in the hex value.

Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13373 6f19259b-4bc3-4df7-8a09-765794883524

4 files changed, 64 insertions, 7 deletions

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index 8f1ae7b130..54126782a0 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -1761,6 +1761,63 @@ Done:
 }

 

 /**

+  Check if a Unicode character is a hexadecimal character.

+

+  This function checks if a Unicode character is a 

+  hexadecimal character.  The valid hexadecimal character is 

+  L'0' to L'9', L'a' to L'f', or L'A' to L'F'.

+

+

+  @param Char           The character to check against.

+

+  @retval TRUE          If the Char is a hexadecmial character.

+  @retval FALSE         If the Char is not a hexadecmial character.

+

+**/

+BOOLEAN

+EFIAPI

+IsHexaDecimalDigitCharacter (

+  IN CHAR16             Char

+  )

+{

+  return (BOOLEAN) ((Char >= L'0' && Char <= L'9') || (Char >= L'A' && Char <= L'F') || (Char >= L'a' && Char <= L'f'));

+}

+

+/**

+

+  This code checks if variable is hardware error record variable or not.

+

+  According to UEFI spec, hardware error record variable should use the EFI_HARDWARE_ERROR_VARIABLE VendorGuid

+  and have the L"HwErrRec####" name convention, #### is a printed hex value and no 0x or h is included in the hex value.

+

+  @param VariableName   Pointer to variable name.

+  @param VendorGuid     Variable Vendor Guid.

+

+  @retval TRUE          Variable is hardware error record variable.

+  @retval FALSE         Variable is not hardware error record variable.

+

+**/

+BOOLEAN

+EFIAPI

+IsHwErrRecVariable (

+  IN CHAR16             *VariableName,

+  IN EFI_GUID           *VendorGuid

+  )

+{

+  if (!CompareGuid (VendorGuid, &gEfiHardwareErrorVariableGuid) ||

+      (StrLen (VariableName) != StrLen (L"HwErrRec####")) ||

+      (StrnCmp(VariableName, L"HwErrRec", StrLen (L"HwErrRec")) != 0) ||

+      !IsHexaDecimalDigitCharacter (VariableName[0x8]) ||

+      !IsHexaDecimalDigitCharacter (VariableName[0x9]) ||

+      !IsHexaDecimalDigitCharacter (VariableName[0xA]) ||

+      !IsHexaDecimalDigitCharacter (VariableName[0xB])) {

+    return FALSE;

+  }

+

+  return TRUE;

+}

+

+/**

 

   This code finds variable in storage blocks (Volatile or Non-Volatile).

 

@@ -2050,10 +2107,7 @@ VariableServiceSetVariable (
         (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxHardwareErrorVariableSize))) {

       return EFI_INVALID_PARAMETER;

     }

-    //

-    // According to UEFI spec, HARDWARE_ERROR_RECORD variable name convention should be L"HwErrRecXXXX".

-    //

-    if (StrnCmp(VariableName, L"HwErrRec", StrLen(L"HwErrRec")) != 0) {

+    if (!IsHwErrRecVariable(VariableName, VendorGuid)) {

       return EFI_INVALID_PARAMETER;

     }

   } else {

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
index 76c6205978..c4a16e6f63 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
@@ -3,7 +3,7 @@
   The internal header file includes the common header files, defines

   internal structure and functions used by Variable modules.

 

-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2006 - 2012, 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

@@ -38,6 +38,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Guid/EventGroup.h>

 #include <Guid/VariableFormat.h>

 #include <Guid/SystemNvDataGuid.h>

+#include <Guid/HardwareErrorVariable.h>

 

 #define VARIABLE_RECLAIM_THRESHOLD (1024)

 

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
index 0acc7ed1b2..28b69c34de 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
@@ -2,7 +2,7 @@
 # Component description file for Variable module.

 #

 # This module installs three EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName.

-# Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>

+# Copyright (c) 2006 - 2012, 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

@@ -65,6 +65,7 @@
   gEfiGlobalVariableGuid                        ## PRODUCES ## Variable Guid

   gEfiEventVirtualAddressChangeGuid             ## PRODUCES ## Event

   gEfiSystemNvDataFvGuid                        ## CONSUMES

+  gEfiHardwareErrorVariableGuid                 ## SOMETIMES_CONSUMES

 

 [Pcd]

   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf
index 25aae7b440..da0a0e9ff8 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf
@@ -8,7 +8,7 @@
 #  This module should be used with SMM Runtime DXE module together. The 
 #  SMM Runtime DXE module would install variable arch protocol and variable 
 #  write arch protocol based on SMM variable module.
-# Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2010 - 2012, 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
@@ -68,6 +68,7 @@
   gEfiGlobalVariableGuid                        ## PRODUCES ## Variable Guid
   gSmmVariableWriteGuid                         ## PRODUCES ## SMM Variable Write Guid 
   gEfiSystemNvDataFvGuid                        ## CONSUMES
+  gEfiHardwareErrorVariableGuid                 ## SOMETIMES_CONSUMES
 
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize