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 *
efi_get_table(EFI_GUID * tbl)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
OpenProtocolByHandle(EFI_HANDLE handle,EFI_GUID * protocol,void ** interface)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