2 Support functions for managing debug image info table when loading and unloading
5 Copyright (c) 2006 - 2008, Intel Corporation. <BR>
6 All rights reserved. This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
19 EFI_DEBUG_IMAGE_INFO_TABLE_HEADER mDebugInfoTableHeader
= {
20 0, // volatile UINT32 UpdateStatus;
21 0, // UINT32 TableSize;
22 NULL
// EFI_DEBUG_IMAGE_INFO *EfiDebugImageInfoTable;
25 EFI_SYSTEM_TABLE_POINTER
*mDebugTable
= NULL
;
30 Creates and initializes the DebugImageInfo Table. Also creates the configuration
31 table and registers it into the system table.
35 CoreInitializeDebugImageInfoTable (
42 // Allocate 4M aligned page for the structure and fill in the data.
43 // Ideally we would update the CRC now as well, but the service may not yet be available.
44 // See comments in the CoreUpdateDebugTableCrc32() function below for details.
46 mDebugTable
= AllocateAlignedPages (EFI_SIZE_TO_PAGES (sizeof (EFI_SYSTEM_TABLE_POINTER
)), FOUR_MEG_ALIGNMENT
);
47 mDebugTable
->Signature
= EFI_SYSTEM_TABLE_SIGNATURE
;
48 mDebugTable
->EfiSystemTableBase
= (EFI_PHYSICAL_ADDRESS
) (UINTN
) gDxeCoreST
;
49 mDebugTable
->Crc32
= 0;
50 Status
= CoreInstallConfigurationTable (&gEfiDebugImageInfoTableGuid
, &mDebugInfoTableHeader
);
51 ASSERT_EFI_ERROR (Status
);
56 Update the CRC32 in the Debug Table.
57 Since the CRC32 service is made available by the Runtime driver, we have to
58 wait for the Runtime Driver to be installed before the CRC32 can be computed.
59 This function is called elsewhere by the core when the runtime architectural
64 CoreUpdateDebugTableCrc32 (
68 ASSERT(mDebugTable
!= NULL
);
69 mDebugTable
->Crc32
= 0;
70 gBS
->CalculateCrc32 ((VOID
*)mDebugTable
, sizeof (EFI_SYSTEM_TABLE_POINTER
), &mDebugTable
->Crc32
);
75 Adds a new DebugImageInfo structure to the DebugImageInfo Table. Re-Allocates
76 the table if it's not large enough to accomidate another entry.
78 @param ImageInfoType type of debug image information
79 @param LoadedImage pointer to the loaded image protocol for the image being
81 @param ImageHandle image handle for the image being loaded
85 CoreNewDebugImageInfoEntry (
86 IN UINT32 ImageInfoType
,
87 IN EFI_LOADED_IMAGE_PROTOCOL
*LoadedImage
,
88 IN EFI_HANDLE ImageHandle
91 EFI_DEBUG_IMAGE_INFO
*Table
;
92 EFI_DEBUG_IMAGE_INFO
*NewTable
;
98 // Set the flag indicating that we're in the process of updating the table.
100 mDebugInfoTableHeader
.UpdateStatus
|= EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS
;
102 Table
= mDebugInfoTableHeader
.EfiDebugImageInfoTable
;
103 MaxTableIndex
= mDebugInfoTableHeader
.TableSize
;
105 for (Index
= 0; Index
< MaxTableIndex
; Index
++) {
106 if (Table
[Index
].NormalImage
== NULL
) {
108 // We have found a free entry so exit the loop
113 if (Index
== MaxTableIndex
) {
115 // Table is full, so re-allocate another page for a larger table...
117 TableSize
= MaxTableIndex
* EFI_DEBUG_TABLE_ENTRY_SIZE
;
118 NewTable
= AllocateZeroPool (TableSize
+ EFI_PAGE_SIZE
);
119 if (NewTable
== NULL
) {
120 mDebugInfoTableHeader
.UpdateStatus
&= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS
;
124 // Copy the old table into the new one
126 CopyMem (NewTable
, Table
, TableSize
);
128 // Free the old table
130 CoreFreePool (Table
);
132 // Update the table header
135 mDebugInfoTableHeader
.EfiDebugImageInfoTable
= NewTable
;
136 mDebugInfoTableHeader
.TableSize
+= EFI_PAGE_SIZE
/ EFI_DEBUG_TABLE_ENTRY_SIZE
;
139 // Allocate data for new entry
141 Table
[Index
].NormalImage
= AllocateZeroPool (sizeof (EFI_DEBUG_IMAGE_INFO_NORMAL
));
142 if (Table
[Index
].NormalImage
!= NULL
) {
146 Table
[Index
].NormalImage
->ImageInfoType
= (UINT32
) ImageInfoType
;
147 Table
[Index
].NormalImage
->LoadedImageProtocolInstance
= LoadedImage
;
148 Table
[Index
].NormalImage
->ImageHandle
= ImageHandle
;
150 mDebugInfoTableHeader
.UpdateStatus
&= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS
;
156 Removes and frees an entry from the DebugImageInfo Table.
158 @param ImageHandle image handle for the image being unloaded
162 CoreRemoveDebugImageInfoEntry (
163 EFI_HANDLE ImageHandle
166 EFI_DEBUG_IMAGE_INFO
*Table
;
169 mDebugInfoTableHeader
.UpdateStatus
|= EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS
;
171 Table
= mDebugInfoTableHeader
.EfiDebugImageInfoTable
;
173 for (Index
= 0; Index
< mDebugInfoTableHeader
.TableSize
; Index
++) {
174 if (Table
[Index
].NormalImage
!= NULL
&& Table
[Index
].NormalImage
->ImageHandle
== ImageHandle
) {
176 // Found a match. Free up the record, then NULL the pointer to indicate the slot
179 CoreFreePool (Table
[Index
].NormalImage
);
180 Table
[Index
].NormalImage
= NULL
;
184 mDebugInfoTableHeader
.UpdateStatus
&= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS
;