| 1 | /*++\r |
| 2 | \r |
| 3 | Copyright (c) 2006 - 2007, Intel Corporation \r |
| 4 | All rights reserved. This program and the accompanying materials \r |
| 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r |
| 7 | http://opensource.org/licenses/bsd-license.php \r |
| 8 | \r |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | \r |
| 12 | Module Name:\r |
| 13 | \r |
| 14 | InstallConfigurationTable.c\r |
| 15 | \r |
| 16 | \r |
| 17 | Abstract:\r |
| 18 | \r |
| 19 | Tiano Miscellaneous Services InstallConfigurationTable service\r |
| 20 | \r |
| 21 | --*/\r |
| 22 | \r |
| 23 | #include <DxeMain.h>\r |
| 24 | \r |
| 25 | #define CONFIG_TABLE_SIZE_INCREASED 0x10\r |
| 26 | \r |
| 27 | UINTN mSystemTableAllocateSize = 0;\r |
| 28 | \r |
| 29 | \r |
| 30 | EFI_STATUS\r |
| 31 | CoreGetConfigTable (\r |
| 32 | IN EFI_GUID *Guid,\r |
| 33 | OUT VOID **Table\r |
| 34 | )\r |
| 35 | /*++\r |
| 36 | \r |
| 37 | Routine Description:\r |
| 38 | \r |
| 39 | Find a config table by name in system table's ConfigurationTable.\r |
| 40 | \r |
| 41 | Arguments:\r |
| 42 | \r |
| 43 | Guid - The table name to look for\r |
| 44 | \r |
| 45 | Table - Pointer of the config table\r |
| 46 | \r |
| 47 | Returns: \r |
| 48 | \r |
| 49 | EFI_NOT_FOUND - Could not find the table in system table's ConfigurationTable.\r |
| 50 | \r |
| 51 | EFI_SUCCESS - Table successfully found.\r |
| 52 | \r |
| 53 | --*/\r |
| 54 | {\r |
| 55 | UINTN Index;\r |
| 56 | \r |
| 57 | for (Index = 0; Index < gDxeCoreST->NumberOfTableEntries; Index++) {\r |
| 58 | if (CompareGuid (Guid, &(gDxeCoreST->ConfigurationTable[Index].VendorGuid))) {\r |
| 59 | *Table = gDxeCoreST->ConfigurationTable[Index].VendorTable;\r |
| 60 | return EFI_SUCCESS;\r |
| 61 | }\r |
| 62 | }\r |
| 63 | \r |
| 64 | return EFI_NOT_FOUND;\r |
| 65 | }\r |
| 66 | \r |
| 67 | \r |
| 68 | \r |
| 69 | EFI_STATUS\r |
| 70 | EFIAPI\r |
| 71 | CoreInstallConfigurationTable (\r |
| 72 | IN EFI_GUID *Guid,\r |
| 73 | IN VOID *Table\r |
| 74 | )\r |
| 75 | /*++\r |
| 76 | \r |
| 77 | Routine Description:\r |
| 78 | \r |
| 79 | Boot Service called to add, modify, or remove a system configuration table from \r |
| 80 | the EFI System Table.\r |
| 81 | \r |
| 82 | Arguments:\r |
| 83 | \r |
| 84 | Guid - Pointer to the GUID for the entry to add, update, or remove\r |
| 85 | Table - Pointer to the configuration table for the entry to add, update, or\r |
| 86 | remove, may be NULL.\r |
| 87 | \r |
| 88 | Returns:\r |
| 89 | \r |
| 90 | EFI_SUCCESS Guid, Table pair added, updated, or removed.\r |
| 91 | EFI_INVALID_PARAMETER Input GUID not valid.\r |
| 92 | EFI_NOT_FOUND Attempted to delete non-existant entry\r |
| 93 | EFI_OUT_OF_RESOURCES Not enough memory available\r |
| 94 | \r |
| 95 | --*/\r |
| 96 | {\r |
| 97 | UINTN Index;\r |
| 98 | EFI_CONFIGURATION_TABLE *EfiConfigurationTable;\r |
| 99 | \r |
| 100 | //\r |
| 101 | // If Guid is NULL, then this operation cannot be performed\r |
| 102 | //\r |
| 103 | if (Guid == NULL) {\r |
| 104 | return EFI_INVALID_PARAMETER;\r |
| 105 | }\r |
| 106 | \r |
| 107 | EfiConfigurationTable = gDxeCoreST->ConfigurationTable;\r |
| 108 | \r |
| 109 | //\r |
| 110 | // Search all the table for an entry that matches Guid\r |
| 111 | //\r |
| 112 | for (Index = 0; Index < gDxeCoreST->NumberOfTableEntries; Index++) {\r |
| 113 | if (CompareGuid (Guid, &(gDxeCoreST->ConfigurationTable[Index].VendorGuid))) {\r |
| 114 | break;\r |
| 115 | }\r |
| 116 | }\r |
| 117 | \r |
| 118 | if (Index < gDxeCoreST->NumberOfTableEntries) {\r |
| 119 | //\r |
| 120 | // A match was found, so this is either a modify or a delete operation\r |
| 121 | //\r |
| 122 | if (Table != NULL) {\r |
| 123 | //\r |
| 124 | // If Table is not NULL, then this is a modify operation.\r |
| 125 | // Modify the table enty and return.\r |
| 126 | //\r |
| 127 | gDxeCoreST->ConfigurationTable[Index].VendorTable = Table;\r |
| 128 | \r |
| 129 | //\r |
| 130 | // Signal Configuration Table change\r |
| 131 | //\r |
| 132 | CoreNotifySignalList (Guid);\r |
| 133 | \r |
| 134 | return EFI_SUCCESS;\r |
| 135 | }\r |
| 136 | \r |
| 137 | //\r |
| 138 | // A match was found and Table is NULL, so this is a delete operation.\r |
| 139 | //\r |
| 140 | gDxeCoreST->NumberOfTableEntries--;\r |
| 141 | \r |
| 142 | //\r |
| 143 | // Copy over deleted entry\r |
| 144 | //\r |
| 145 | CopyMem (\r |
| 146 | &(EfiConfigurationTable[Index]),\r |
| 147 | &(gDxeCoreST->ConfigurationTable[Index + 1]),\r |
| 148 | (gDxeCoreST->NumberOfTableEntries - Index) * sizeof (EFI_CONFIGURATION_TABLE)\r |
| 149 | );\r |
| 150 | \r |
| 151 | } else {\r |
| 152 | \r |
| 153 | //\r |
| 154 | // No matching GUIDs were found, so this is an add operation.\r |
| 155 | //\r |
| 156 | \r |
| 157 | if (Table == NULL) {\r |
| 158 | //\r |
| 159 | // If Table is NULL on an add operation, then return an error.\r |
| 160 | //\r |
| 161 | return EFI_NOT_FOUND;\r |
| 162 | }\r |
| 163 | \r |
| 164 | //\r |
| 165 | // Assume that Index == gDxeCoreST->NumberOfTableEntries\r |
| 166 | //\r |
| 167 | if ((Index * sizeof (EFI_CONFIGURATION_TABLE)) >= mSystemTableAllocateSize) {\r |
| 168 | //\r |
| 169 | // Allocate a table with one additional entry.\r |
| 170 | //\r |
| 171 | mSystemTableAllocateSize += (CONFIG_TABLE_SIZE_INCREASED * sizeof (EFI_CONFIGURATION_TABLE));\r |
| 172 | EfiConfigurationTable = CoreAllocateRuntimePool (mSystemTableAllocateSize);\r |
| 173 | if (EfiConfigurationTable == NULL) {\r |
| 174 | //\r |
| 175 | // If a new table could not be allocated, then return an error.\r |
| 176 | //\r |
| 177 | return EFI_OUT_OF_RESOURCES;\r |
| 178 | }\r |
| 179 | \r |
| 180 | if (gDxeCoreST->ConfigurationTable != NULL) {\r |
| 181 | //\r |
| 182 | // Copy the old table to the new table.\r |
| 183 | //\r |
| 184 | CopyMem (\r |
| 185 | EfiConfigurationTable,\r |
| 186 | gDxeCoreST->ConfigurationTable,\r |
| 187 | Index * sizeof (EFI_CONFIGURATION_TABLE)\r |
| 188 | );\r |
| 189 | \r |
| 190 | //\r |
| 191 | // Free Old Table\r |
| 192 | //\r |
| 193 | CoreFreePool (gDxeCoreST->ConfigurationTable);\r |
| 194 | }\r |
| 195 | \r |
| 196 | //\r |
| 197 | // Update System Table\r |
| 198 | //\r |
| 199 | gDxeCoreST->ConfigurationTable = EfiConfigurationTable;\r |
| 200 | }\r |
| 201 | \r |
| 202 | //\r |
| 203 | // Fill in the new entry\r |
| 204 | //\r |
| 205 | CopyMem ((VOID *)&EfiConfigurationTable[Index].VendorGuid, Guid, sizeof (EFI_GUID));\r |
| 206 | EfiConfigurationTable[Index].VendorTable = Table;\r |
| 207 | \r |
| 208 | //\r |
| 209 | // This is an add operation, so increment the number of table entries\r |
| 210 | //\r |
| 211 | gDxeCoreST->NumberOfTableEntries++;\r |
| 212 | }\r |
| 213 | \r |
| 214 | //\r |
| 215 | // Fix up the CRC-32 in the EFI System Table\r |
| 216 | //\r |
| 217 | CalculateEfiHdrCrc (&gDxeCoreST->Hdr);\r |
| 218 | \r |
| 219 | //\r |
| 220 | // Signal Configuration Table change\r |
| 221 | //\r |
| 222 | CoreNotifySignalList (Guid);\r |
| 223 | \r |
| 224 | return EFI_SUCCESS;\r |
| 225 | }\r |