Initial import.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Universal/StatusCode/RuntimeDxe/StatusCode.c

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+/*++
+
+Copyright (c) 2006, Intel Corporation                                                         
+All rights reserved. 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.             
+
+Module Name:
+
+  StatusCode.c
+
+Abstract:
+
+  Status Code Architectural Protocol implementation as defined in Tiano
+  Architecture Specification.
+
+  This driver also depends on the DataHub, and will log all status code info 
+  to the DataHub. Fatal Errors are Printed to Standard Error (StdErr) and not 
+  logged to the data hub (If you crash what good is the data in the data hub).
+
+  This driver has limited functionality at runtime and will not log to Data Hub
+  at runtime.
+
+  Notes:
+  This driver assumes the following ReportStatusCode strategy:
+  PEI       -> uses PeiReportStatusCode
+  DXE IPL   -> uses PeiReportStatusCode
+  early DXE -> uses PeiReportStatusCode via HOB
+  DXE       -> This driver
+  RT        -> This driver
+
+--*/
+
+#include "StatusCode.h"
+
+EFI_LOCK  mStatusCodeLock;
+BOOLEAN   mStatusCodeFlag = FALSE;
+
+//
+// Function implemenations
+//
+
+
+EFI_STATUS
+EFIAPI
+StatusCodeReportStatusCode (
+  IN EFI_STATUS_CODE_TYPE     CodeType,
+  IN EFI_STATUS_CODE_VALUE    Value,
+  IN UINT32                   Instance,
+  IN EFI_GUID                 *CallerId,
+  IN EFI_STATUS_CODE_DATA     *Data OPTIONAL
+  )
+/*++
+
+Routine Description:
+
+  Calls into the platform library which dispatches the platform specific
+  listeners. For NT environments we still call back into PEI because the 
+  ReportStatusCode functionality requires Win32 services and is built into
+  the SecMain.exe utility.
+
+Arguments:
+
+  (See Tiano Runtime Specification)
+
+Returns:
+
+  None
+
+--*/
+{
+  EFI_STATUS  Status;
+
+  //
+  // Acquire the lock required to update mStatusCodeFlag
+  //
+  Status = EfiAcquireLockOrFail (&mStatusCodeLock);
+  if (EFI_ERROR (Status)) {
+    //
+    // Check for reentrancy of the lock
+    //
+    return EFI_DEVICE_ERROR;
+  }
+  //
+  // Check to see if we are already in the middle of a ReportStatusCode()
+  //
+  if (mStatusCodeFlag) {
+    EfiReleaseLock (&mStatusCodeLock);
+    return EFI_DEVICE_ERROR;
+  }
+  //
+  // Set the flag to show we are in the middle of a ReportStatusCode()
+  //
+  mStatusCodeFlag = TRUE;
+
+  //
+  // Release the lock for updating mStatusCodeFlag
+  //
+  EfiReleaseLock (&mStatusCodeLock);
+
+  //
+  // Go do the work required to report a status code
+  //
+  RtPlatformReportStatusCode (CodeType, Value, Instance, CallerId, Data);
+
+  //
+  // Acquire the lock required to update mStatusCodeFlag
+  //
+  Status = EfiAcquireLockOrFail (&mStatusCodeLock);
+  if (EFI_ERROR (Status)) {
+    //
+    // Check for reentrancy of the lock
+    //
+    return EFI_DEVICE_ERROR;
+  }
+  //
+  // Clear the flag to show we are no longer in the middle of a ReportStatusCode()
+  //
+  mStatusCodeFlag = FALSE;
+
+  //
+  // Release the lock for updating mStatusCodeFlag
+  //
+  EfiReleaseLock (&mStatusCodeLock);
+
+  return EFI_SUCCESS;
+}
+//
+// Protocol instance, there can be only one.
+//
+EFI_STATUS
+InitializeStatusCode (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+/*++
+
+Routine Description:
+
+  Install Driver to produce Report Status Code Arch Protocol
+
+Arguments:
+
+  (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
+
+Returns:
+
+  EFI_SUCCESS - Logging Hub protocol installed
+  Other       - No protocol installed, unload driver.
+
+--*/
+{
+
+  EfiInitializeLock (&mStatusCodeLock, EFI_TPL_HIGH_LEVEL);
+
+  //
+  // Call the platform hook to initialize the different listeners.
+  //
+  RtPlatformStatusCodeInitialize ();
+
+  //
+  // Register a protocol that EfiUtilityLib can use to implement DEBUG () and ASSERT ()
+  // Macros.
+  //
+  InstallStatusCodeDebugAssert ();
+
+  return EFI_SUCCESS;
+}