Support functions for managing debug image info table when loading and unloading\r
images.\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+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
NULL // EFI_DEBUG_IMAGE_INFO *EfiDebugImageInfoTable;\r
};\r
\r
-EFI_SYSTEM_TABLE_POINTER *mDebugTable = NULL;\r
+UINTN mMaxTableEntries = 0;\r
\r
-#define FOUR_MEG_ALIGNMENT 0x400000\r
+EFI_SYSTEM_TABLE_POINTER *mDebugTable = NULL;\r
\r
#define EFI_DEBUG_TABLE_ENTRY_SIZE (sizeof (VOID *))\r
\r
VOID\r
)\r
{\r
- EFI_STATUS Status;\r
+ EFI_STATUS Status;\r
+ UINTN Pages;\r
+ EFI_PHYSICAL_ADDRESS Memory;\r
+ UINTN AlignedMemory;\r
+ UINTN AlignmentMask;\r
+ UINTN UnalignedPages;\r
+ UINTN RealPages;\r
\r
//\r
// Allocate 4M aligned page for the structure and fill in the data.\r
// Ideally we would update the CRC now as well, but the service may not yet be available.\r
// See comments in the CoreUpdateDebugTableCrc32() function below for details.\r
//\r
- mDebugTable = AllocateAlignedPages (EFI_SIZE_TO_PAGES (sizeof (EFI_SYSTEM_TABLE_POINTER)), FOUR_MEG_ALIGNMENT); \r
- mDebugTable->Signature = EFI_SYSTEM_TABLE_SIGNATURE;\r
+ Pages = EFI_SIZE_TO_PAGES (sizeof (EFI_SYSTEM_TABLE_POINTER));\r
+ AlignmentMask = SIZE_4MB - 1;\r
+ RealPages = Pages + EFI_SIZE_TO_PAGES (SIZE_4MB);\r
+\r
+ //\r
+ // Attempt to allocate memory below PcdMaxEfiSystemTablePointerAddress\r
+ // If PcdMaxEfiSystemTablePointerAddress is 0, then allocate memory below\r
+ // MAX_ADDRESS\r
+ //\r
+ Memory = PcdGet64 (PcdMaxEfiSystemTablePointerAddress);\r
+ if (Memory == 0) {\r
+ Memory = MAX_ADDRESS;\r
+ }\r
+ Status = CoreAllocatePages (\r
+ AllocateMaxAddress, \r
+ EfiBootServicesData,\r
+ RealPages, \r
+ &Memory\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ if (PcdGet64 (PcdMaxEfiSystemTablePointerAddress) != 0) {\r
+ DEBUG ((EFI_D_INFO, "Allocate memory for EFI_SYSTEM_TABLE_POINTER below PcdMaxEfiSystemTablePointerAddress failed. \\r
+ Retry to allocate memroy as close to the top of memory as feasible.\n"));\r
+ }\r
+ //\r
+ // If the initial memory allocation fails, then reattempt allocation\r
+ // as close to the top of memory as feasible.\r
+ //\r
+ Status = CoreAllocatePages (\r
+ AllocateAnyPages, \r
+ EfiBootServicesData,\r
+ RealPages, \r
+ &Memory\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+ if (EFI_ERROR (Status)) {\r
+ return;\r
+ }\r
+ } \r
+\r
+ //\r
+ // Free overallocated pages\r
+ //\r
+ AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;\r
+ UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN)Memory);\r
+ if (UnalignedPages > 0) {\r
+ //\r
+ // Free first unaligned page(s).\r
+ //\r
+ Status = CoreFreePages (Memory, UnalignedPages);\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+ Memory = (EFI_PHYSICAL_ADDRESS)(AlignedMemory + EFI_PAGES_TO_SIZE (Pages));\r
+ UnalignedPages = RealPages - Pages - UnalignedPages;\r
+ if (UnalignedPages > 0) {\r
+ //\r
+ // Free last unaligned page(s).\r
+ //\r
+ Status = CoreFreePages (Memory, UnalignedPages);\r
+ ASSERT_EFI_ERROR (Status);\r
+ }\r
+\r
+ //\r
+ // Set mDebugTable to the 4MB aligned allocated pages\r
+ //\r
+ mDebugTable = (EFI_SYSTEM_TABLE_POINTER *)(AlignedMemory);\r
+ ASSERT (mDebugTable != NULL);\r
+\r
+ //\r
+ // Initialize EFI_SYSTEM_TABLE_POINTER structure\r
+ // \r
+ mDebugTable->Signature = EFI_SYSTEM_TABLE_SIGNATURE;\r
mDebugTable->EfiSystemTableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) gDxeCoreST;\r
- mDebugTable->Crc32 = 0;\r
+ mDebugTable->Crc32 = 0;\r
+ \r
+ //\r
+ // Install the EFI_SYSTEM_TABLE_POINTER structure in the EFI System \r
+ // Configuration Table\r
+ //\r
Status = CoreInstallConfigurationTable (&gEfiDebugImageInfoTableGuid, &mDebugInfoTableHeader);\r
ASSERT_EFI_ERROR (Status);\r
}\r
EFI_DEBUG_IMAGE_INFO *Table;\r
EFI_DEBUG_IMAGE_INFO *NewTable;\r
UINTN Index;\r
- UINTN MaxTableIndex;\r
UINTN TableSize;\r
\r
//\r
mDebugInfoTableHeader.UpdateStatus |= EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r
\r
Table = mDebugInfoTableHeader.EfiDebugImageInfoTable;\r
- MaxTableIndex = mDebugInfoTableHeader.TableSize;\r
-\r
- for (Index = 0; Index < MaxTableIndex; Index++) {\r
- if (Table[Index].NormalImage == NULL) {\r
- //\r
- // We have found a free entry so exit the loop\r
- //\r
- break;\r
+ \r
+ if (mDebugInfoTableHeader.TableSize < mMaxTableEntries) {\r
+ //\r
+ // We still have empty entires in the Table, find the first empty entry.\r
+ //\r
+ Index = 0;\r
+ while (Table[Index].NormalImage != NULL) {\r
+ Index++;\r
}\r
- }\r
- if (Index == MaxTableIndex) {\r
+ //\r
+ // There must be an empty entry in the in the table.\r
+ //\r
+ ASSERT (Index < mMaxTableEntries);\r
+ } else {\r
//\r
// Table is full, so re-allocate another page for a larger table...\r
//\r
- TableSize = MaxTableIndex * EFI_DEBUG_TABLE_ENTRY_SIZE;\r
+ TableSize = mMaxTableEntries * EFI_DEBUG_TABLE_ENTRY_SIZE;\r
NewTable = AllocateZeroPool (TableSize + EFI_PAGE_SIZE);\r
if (NewTable == NULL) {\r
mDebugInfoTableHeader.UpdateStatus &= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r
//\r
Table = NewTable;\r
mDebugInfoTableHeader.EfiDebugImageInfoTable = NewTable;\r
- mDebugInfoTableHeader.TableSize += EFI_PAGE_SIZE / EFI_DEBUG_TABLE_ENTRY_SIZE;\r
+ //\r
+ // Enlarge the max table entries and set the first empty entry index to\r
+ // be the original max table entries.\r
+ //\r
+ Index = mMaxTableEntries;\r
+ mMaxTableEntries += EFI_PAGE_SIZE / EFI_DEBUG_TABLE_ENTRY_SIZE;\r
}\r
+\r
//\r
// Allocate data for new entry\r
//\r
Table[Index].NormalImage->ImageInfoType = (UINT32) ImageInfoType;\r
Table[Index].NormalImage->LoadedImageProtocolInstance = LoadedImage;\r
Table[Index].NormalImage->ImageHandle = ImageHandle;\r
+ //\r
+ // Increase the number of EFI_DEBUG_IMAGE_INFO elements and set the mDebugInfoTable in modified status.\r
+ //\r
+ mDebugInfoTableHeader.TableSize++;\r
+ mDebugInfoTableHeader.UpdateStatus |= EFI_DEBUG_IMAGE_INFO_TABLE_MODIFIED;\r
}\r
mDebugInfoTableHeader.UpdateStatus &= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r
}\r
\r
Table = mDebugInfoTableHeader.EfiDebugImageInfoTable;\r
\r
- for (Index = 0; Index < mDebugInfoTableHeader.TableSize; Index++) {\r
+ for (Index = 0; Index < mMaxTableEntries; Index++) {\r
if (Table[Index].NormalImage != NULL && Table[Index].NormalImage->ImageHandle == ImageHandle) {\r
//\r
// Found a match. Free up the record, then NULL the pointer to indicate the slot\r
//\r
CoreFreePool (Table[Index].NormalImage);\r
Table[Index].NormalImage = NULL;\r
+ //\r
+ // Decrease the number of EFI_DEBUG_IMAGE_INFO elements and set the mDebugInfoTable in modified status.\r
+ //\r
+ mDebugInfoTableHeader.TableSize--;\r
+ mDebugInfoTableHeader.UpdateStatus |= EFI_DEBUG_IMAGE_INFO_TABLE_MODIFIED;\r
break;\r
}\r
}\r
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