--- /dev/null
+/*++\r
+\r
+Copyright (c) 2004 - 2006, Intel Corporation \r
+All rights reserved. This program and the accompanying materials \r
+are licensed and made available under the terms and conditions of the BSD License \r
+which accompanies this distribution. The full text of the license may be found at \r
+http://opensource.org/licenses/bsd-license.php \r
+ \r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+\r
+Module Name:\r
+ \r
+ RtMemoryStatusCode.c\r
+ \r
+Abstract:\r
+\r
+ EFI lib to provide memory journal status code reporting routines.\r
+\r
+--*/\r
+\r
+#include "RtMemoryStatusCode.h"\r
+\r
+//\r
+// Global variables\r
+//\r
+PEI_STATUS_CODE_MEMORY_PPI mStatusCodeMemoryPpi = { 0, 0, 0, 0 };\r
+\r
+//\r
+// Function implementations\r
+//\r
+EFI_STATUS\r
+EFIAPI\r
+RtMemoryReportStatusCode (\r
+ IN EFI_STATUS_CODE_TYPE CodeType,\r
+ IN EFI_STATUS_CODE_VALUE Value,\r
+ IN UINT32 Instance,\r
+ IN EFI_GUID * CallerId,\r
+ IN EFI_STATUS_CODE_DATA * Data OPTIONAL\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Log a status code to a memory journal. If no memory journal exists, \r
+ we will just return.\r
+\r
+Arguments:\r
+\r
+ Same as ReportStatusCode AP\r
+ \r
+Returns:\r
+\r
+ EFI_SUCCESS This function always returns success\r
+\r
+--*/\r
+{\r
+ EFI_STATUS_CODE_ENTRY *CurrentEntry;\r
+ UINTN MaxEntry;\r
+\r
+ //\r
+ // We don't care to log debug codes.\r
+ //\r
+ if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) == EFI_DEBUG_CODE) {\r
+ return EFI_SUCCESS;\r
+ }\r
+ //\r
+ // Update the latest entry in the journal.\r
+ //\r
+ MaxEntry = mStatusCodeMemoryPpi.Length / sizeof (EFI_STATUS_CODE_ENTRY);\r
+ if (!MaxEntry) {\r
+ //\r
+ // If we don't have any entries, then we can return.\r
+ // This effectively means that no memory buffer was passed forward from PEI.\r
+ //\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ CurrentEntry = (EFI_STATUS_CODE_ENTRY *) (UINTN) (mStatusCodeMemoryPpi.Address + (mStatusCodeMemoryPpi.LastEntry * sizeof (EFI_STATUS_CODE_ENTRY)));\r
+\r
+ mStatusCodeMemoryPpi.LastEntry = (mStatusCodeMemoryPpi.LastEntry + 1) % MaxEntry;\r
+ if (mStatusCodeMemoryPpi.LastEntry == mStatusCodeMemoryPpi.FirstEntry) {\r
+ mStatusCodeMemoryPpi.FirstEntry = (mStatusCodeMemoryPpi.FirstEntry + 1) % MaxEntry;\r
+ }\r
+\r
+ CurrentEntry->Type = CodeType;\r
+ CurrentEntry->Value = Value;\r
+ CurrentEntry->Instance = Instance;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+VOID\r
+EFIAPI\r
+RtMemoryInitializeStatusCode (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Initialization routine.\r
+ Allocates heap space for storing Status Codes.\r
+ Installs a PPI to point to that heap space.\r
+ Installs a callback to switch to memory.\r
+ Installs a callback to \r
+\r
+Arguments: \r
+\r
+ (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)\r
+\r
+Returns: \r
+\r
+ None\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+ VOID *HobList;\r
+ PEI_STATUS_CODE_MEMORY_PPI **StatusCodeMemoryPpi;\r
+\r
+ //\r
+ // Locate the HOB that contains the PPI structure for the memory journal\r
+ // We don't check for more than one.\r
+ //\r
+ EfiLibGetSystemConfigurationTable (\r
+ &gEfiHobListGuid,\r
+ &HobList\r
+ );\r
+ Status = GetNextGuidHob (\r
+ &HobList,\r
+ &gPeiStatusCodeMemoryPpiGuid,\r
+ (VOID **) &StatusCodeMemoryPpi,\r
+ NULL\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return ;\r
+ }\r
+ //\r
+ // Copy data to our structure since the HOB will go away at runtime\r
+ //\r
+ // BUGBUG: Virtualize for RT\r
+ //\r
+ mStatusCodeMemoryPpi.FirstEntry = (*StatusCodeMemoryPpi)->FirstEntry;\r
+ mStatusCodeMemoryPpi.LastEntry = (*StatusCodeMemoryPpi)->LastEntry;\r
+ mStatusCodeMemoryPpi.Address = (*StatusCodeMemoryPpi)->Address;\r
+ mStatusCodeMemoryPpi.Length = (*StatusCodeMemoryPpi)->Length;\r
+}\r
+\r
+VOID\r
+EFIAPI\r
+PlaybackStatusCodes (\r
+ IN EFI_REPORT_STATUS_CODE ReportStatusCode\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Call the input ReportStatusCode function with every status code recorded in\r
+ the journal.\r
+\r
+Arguments: \r
+\r
+ ReportStatusCode ReportStatusCode function to call.\r
+\r
+Returns: \r
+\r
+ None\r
+\r
+--*/\r
+{\r
+ UINTN MaxEntry;\r
+ EFI_STATUS_CODE_ENTRY *CurrentEntry;\r
+ UINTN Counter;\r
+\r
+ if (ReportStatusCode == RtMemoryReportStatusCode) {\r
+ return ;\r
+ }\r
+ //\r
+ // Playback prior status codes to current listeners\r
+ //\r
+ MaxEntry = mStatusCodeMemoryPpi.Length / sizeof (EFI_STATUS_CODE_ENTRY);\r
+ for (Counter = mStatusCodeMemoryPpi.FirstEntry; Counter != mStatusCodeMemoryPpi.LastEntry; Counter++) {\r
+ //\r
+ // Check if we have to roll back to beginning of queue buffer\r
+ //\r
+ if (Counter == MaxEntry) {\r
+ Counter = 0;\r
+ }\r
+ //\r
+ // Play current entry\r
+ //\r
+ CurrentEntry = (EFI_STATUS_CODE_ENTRY *) (UINTN) (mStatusCodeMemoryPpi.Address + (Counter * sizeof (EFI_STATUS_CODE_ENTRY)));\r
+ ReportStatusCode (\r
+ CurrentEntry->Type,\r
+ CurrentEntry->Value,\r
+ CurrentEntry->Instance,\r
+ NULL,\r
+ NULL\r
+ );\r
+ }\r
+}\r
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