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23c98c94 | 1 | /** @file\r |
504214c4 LG |
2 | Support functions for managing debug image info table when loading and unloading\r |
3 | images.\r | |
4 | \r | |
23c98c94 | 5 | Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r |
6 | All rights reserved. This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 13 | \r |
504214c4 | 14 | **/\r |
28a00297 | 15 | \r |
9c4ac31c | 16 | #include "DxeMain.h"\r |
28a00297 | 17 | \r |
18 | \r | |
e94a9ff7 | 19 | EFI_DEBUG_IMAGE_INFO_TABLE_HEADER mDebugInfoTableHeader = {\r |
28a00297 | 20 | 0, // volatile UINT32 UpdateStatus;\r |
21 | 0, // UINT32 TableSize;\r | |
22 | NULL // EFI_DEBUG_IMAGE_INFO *EfiDebugImageInfoTable;\r | |
23 | };\r | |
24 | \r | |
e94a9ff7 | 25 | EFI_SYSTEM_TABLE_POINTER *mDebugTable = NULL;\r |
28a00297 | 26 | \r |
ec90508b | 27 | #define FOUR_MEG_ALIGNMENT 0x400000\r |
022c6d45 | 28 | \r |
ec90508b | 29 | #define EFI_DEBUG_TABLE_ENTRY_SIZE (sizeof (VOID *))\r |
28a00297 | 30 | \r |
162ed594 | 31 | /**\r |
28a00297 | 32 | Creates and initializes the DebugImageInfo Table. Also creates the configuration\r |
33 | table and registers it into the system table.\r | |
34 | \r | |
162ed594 | 35 | **/\r |
36 | VOID\r | |
37 | CoreInitializeDebugImageInfoTable (\r | |
38 | VOID\r | |
39 | )\r | |
022c6d45 | 40 | {\r |
28a00297 | 41 | EFI_STATUS Status;\r |
022c6d45 | 42 | \r |
28a00297 | 43 | //\r |
19e14fc9 | 44 | // Allocate 4M aligned page for the structure and fill in the data.\r |
28a00297 | 45 | // Ideally we would update the CRC now as well, but the service may not yet be available.\r |
46 | // See comments in the CoreUpdateDebugTableCrc32() function below for details.\r | |
47 | //\r | |
19e14fc9 | 48 | mDebugTable = AllocateAlignedPages (EFI_SIZE_TO_PAGES (sizeof (EFI_SYSTEM_TABLE_POINTER)), FOUR_MEG_ALIGNMENT); \r |
28a00297 | 49 | mDebugTable->Signature = EFI_SYSTEM_TABLE_SIGNATURE;\r |
50 | mDebugTable->EfiSystemTableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) gDxeCoreST;\r | |
51 | mDebugTable->Crc32 = 0;\r | |
52 | Status = CoreInstallConfigurationTable (&gEfiDebugImageInfoTableGuid, &mDebugInfoTableHeader);\r | |
53 | ASSERT_EFI_ERROR (Status);\r | |
54 | }\r | |
55 | \r | |
28a00297 | 56 | \r |
162ed594 | 57 | /**\r |
28a00297 | 58 | Update the CRC32 in the Debug Table.\r |
59 | Since the CRC32 service is made available by the Runtime driver, we have to\r | |
60 | wait for the Runtime Driver to be installed before the CRC32 can be computed.\r | |
61 | This function is called elsewhere by the core when the runtime architectural\r | |
62 | protocol is produced.\r | |
63 | \r | |
162ed594 | 64 | **/\r |
65 | VOID\r | |
66 | CoreUpdateDebugTableCrc32 (\r | |
67 | VOID\r | |
68 | )\r | |
28a00297 | 69 | {\r |
70 | ASSERT(mDebugTable != NULL);\r | |
71 | mDebugTable->Crc32 = 0;\r | |
0e9b156d | 72 | gBS->CalculateCrc32 ((VOID *)mDebugTable, sizeof (EFI_SYSTEM_TABLE_POINTER), &mDebugTable->Crc32);\r |
28a00297 | 73 | }\r |
74 | \r | |
162ed594 | 75 | \r |
76 | /**\r | |
77 | Adds a new DebugImageInfo structure to the DebugImageInfo Table. Re-Allocates\r | |
78 | the table if it's not large enough to accomidate another entry.\r | |
79 | \r | |
022c6d45 | 80 | @param ImageInfoType type of debug image information\r |
81 | @param LoadedImage pointer to the loaded image protocol for the image being\r | |
82 | loaded\r | |
162ed594 | 83 | @param ImageHandle image handle for the image being loaded\r |
84 | \r | |
85 | **/\r | |
28a00297 | 86 | VOID\r |
87 | CoreNewDebugImageInfoEntry (\r | |
88 | IN UINT32 ImageInfoType,\r | |
89 | IN EFI_LOADED_IMAGE_PROTOCOL *LoadedImage,\r | |
90 | IN EFI_HANDLE ImageHandle\r | |
91 | )\r | |
022c6d45 | 92 | {\r |
28a00297 | 93 | EFI_DEBUG_IMAGE_INFO *Table;\r |
94 | EFI_DEBUG_IMAGE_INFO *NewTable;\r | |
95 | UINTN Index;\r | |
96 | UINTN MaxTableIndex;\r | |
97 | UINTN TableSize;\r | |
98 | \r | |
99 | //\r | |
100 | // Set the flag indicating that we're in the process of updating the table.\r | |
101 | //\r | |
102 | mDebugInfoTableHeader.UpdateStatus |= EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r | |
103 | \r | |
104 | Table = mDebugInfoTableHeader.EfiDebugImageInfoTable;\r | |
105 | MaxTableIndex = mDebugInfoTableHeader.TableSize;\r | |
106 | \r | |
107 | for (Index = 0; Index < MaxTableIndex; Index++) {\r | |
108 | if (Table[Index].NormalImage == NULL) {\r | |
109 | //\r | |
110 | // We have found a free entry so exit the loop\r | |
111 | //\r | |
112 | break;\r | |
113 | }\r | |
114 | }\r | |
115 | if (Index == MaxTableIndex) {\r | |
116 | //\r | |
117 | // Table is full, so re-allocate another page for a larger table...\r | |
118 | //\r | |
119 | TableSize = MaxTableIndex * EFI_DEBUG_TABLE_ENTRY_SIZE;\r | |
9c4ac31c | 120 | NewTable = AllocateZeroPool (TableSize + EFI_PAGE_SIZE);\r |
28a00297 | 121 | if (NewTable == NULL) {\r |
122 | mDebugInfoTableHeader.UpdateStatus &= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r | |
123 | return;\r | |
124 | }\r | |
125 | //\r | |
126 | // Copy the old table into the new one\r | |
127 | //\r | |
128 | CopyMem (NewTable, Table, TableSize);\r | |
129 | //\r | |
130 | // Free the old table\r | |
131 | //\r | |
132 | CoreFreePool (Table);\r | |
133 | //\r | |
134 | // Update the table header\r | |
135 | //\r | |
136 | Table = NewTable;\r | |
137 | mDebugInfoTableHeader.EfiDebugImageInfoTable = NewTable;\r | |
138 | mDebugInfoTableHeader.TableSize += EFI_PAGE_SIZE / EFI_DEBUG_TABLE_ENTRY_SIZE;\r | |
139 | }\r | |
140 | //\r | |
141 | // Allocate data for new entry\r | |
142 | //\r | |
9c4ac31c | 143 | Table[Index].NormalImage = AllocateZeroPool (sizeof (EFI_DEBUG_IMAGE_INFO_NORMAL));\r |
28a00297 | 144 | if (Table[Index].NormalImage != NULL) {\r |
145 | //\r | |
146 | // Update the entry\r | |
147 | //\r | |
148 | Table[Index].NormalImage->ImageInfoType = (UINT32) ImageInfoType;\r | |
149 | Table[Index].NormalImage->LoadedImageProtocolInstance = LoadedImage;\r | |
150 | Table[Index].NormalImage->ImageHandle = ImageHandle;\r | |
151 | }\r | |
152 | mDebugInfoTableHeader.UpdateStatus &= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r | |
153 | }\r | |
154 | \r | |
155 | \r | |
28a00297 | 156 | \r |
162ed594 | 157 | /**\r |
28a00297 | 158 | Removes and frees an entry from the DebugImageInfo Table.\r |
159 | \r | |
162ed594 | 160 | @param ImageHandle image handle for the image being unloaded\r |
28a00297 | 161 | \r |
162ed594 | 162 | **/\r |
163 | VOID\r | |
164 | CoreRemoveDebugImageInfoEntry (\r | |
165 | EFI_HANDLE ImageHandle\r | |
166 | )\r | |
022c6d45 | 167 | {\r |
28a00297 | 168 | EFI_DEBUG_IMAGE_INFO *Table;\r |
169 | UINTN Index;\r | |
170 | \r | |
171 | mDebugInfoTableHeader.UpdateStatus |= EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r | |
172 | \r | |
173 | Table = mDebugInfoTableHeader.EfiDebugImageInfoTable;\r | |
174 | \r | |
175 | for (Index = 0; Index < mDebugInfoTableHeader.TableSize; Index++) {\r | |
176 | if (Table[Index].NormalImage != NULL && Table[Index].NormalImage->ImageHandle == ImageHandle) {\r | |
177 | //\r | |
178 | // Found a match. Free up the record, then NULL the pointer to indicate the slot\r | |
179 | // is free.\r | |
180 | //\r | |
181 | CoreFreePool (Table[Index].NormalImage);\r | |
182 | Table[Index].NormalImage = NULL;\r | |
183 | break;\r | |
184 | }\r | |
185 | }\r | |
186 | mDebugInfoTableHeader.UpdateStatus &= ~EFI_DEBUG_IMAGE_INFO_UPDATE_IN_PROGRESS;\r | |
187 | }\r | |
188 | \r | |
162ed594 | 189 | \r |