1 /* 2 * Copyright (c) 2000 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 29 #include <efi.h> 30 #include <efilib.h> 31 32 EFI_HANDLE IH; 33 EFI_SYSTEM_TABLE *ST; 34 EFI_BOOT_SERVICES *BS; 35 EFI_RUNTIME_SERVICES *RS; 36 37 void * 38 efi_get_table(EFI_GUID *tbl) 39 { 40 EFI_GUID *id; 41 int i; 42 43 for (i = 0; i < ST->NumberOfTableEntries; i++) { 44 id = &ST->ConfigurationTable[i].VendorGuid; 45 if (!memcmp(id, tbl, sizeof(EFI_GUID))) 46 return (ST->ConfigurationTable[i].VendorTable); 47 } 48 return (NULL); 49 } 50 51 EFI_STATUS 52 OpenProtocolByHandle(EFI_HANDLE handle, EFI_GUID *protocol, void **interface) 53 { 54 return (BS->OpenProtocol(handle, protocol, interface, IH, NULL, 55 EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL)); 56 } 57