4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync UEFI Miscellaneous boot Services InstallConfigurationTable service
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncCopyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncThis program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncare licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncwhich accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncTHE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncWITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Boot Service called to add, modify, or remove a system configuration table from
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the EFI System Table.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Guid Pointer to the GUID for the entry to add, update, or
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Table Pointer to the configuration table for the entry to add,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync update, or remove, may be NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return EFI_SUCCESS Guid, Table pair added, updated, or removed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return EFI_INVALID_PARAMETER Input GUID is NULL.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return EFI_NOT_FOUND Attempted to delete non-existant entry
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return EFI_OUT_OF_RESOURCES Not enough memory available
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If Guid is NULL, then this operation cannot be performed
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EfiConfigurationTable = gDxeCoreST->ConfigurationTable;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Search all the table for an entry that matches Guid
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync for (Index = 0; Index < gDxeCoreST->NumberOfTableEntries; Index++) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (CompareGuid (Guid, &(gDxeCoreST->ConfigurationTable[Index].VendorGuid))) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // A match was found, so this is either a modify or a delete operation
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If Table is not NULL, then this is a modify operation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Modify the table enty and return.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gDxeCoreST->ConfigurationTable[Index].VendorTable = Table;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Signal Configuration Table change
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // A match was found and Table is NULL, so this is a delete operation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Copy over deleted entry
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (gDxeCoreST->NumberOfTableEntries - Index) * sizeof (EFI_CONFIGURATION_TABLE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // No matching GUIDs were found, so this is an add operation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If Table is NULL on an add operation, then return an error.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Assume that Index == gDxeCoreST->NumberOfTableEntries
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if ((Index * sizeof (EFI_CONFIGURATION_TABLE)) >= mSystemTableAllocateSize) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Allocate a table with one additional entry.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync mSystemTableAllocateSize += (CONFIG_TABLE_SIZE_INCREASED * sizeof (EFI_CONFIGURATION_TABLE));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EfiConfigurationTable = AllocateRuntimePool (mSystemTableAllocateSize);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // If a new table could not be allocated, then return an error.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Copy the old table to the new table.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Free Old Table
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Update System Table
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync gDxeCoreST->ConfigurationTable = EfiConfigurationTable;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Fill in the new entry
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync CopyGuid ((VOID *)&EfiConfigurationTable[Index].VendorGuid, Guid);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // This is an add operation, so increment the number of table entries
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Fix up the CRC-32 in the EFI System Table
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Signal Configuration Table change