1 /* $NetBSD: efidelay.c,v 1.2 2018/03/27 14:15:05 nonaka Exp $ */
2
3 /*-
4 * Copyright (c) 2016 Kimihiro Nonaka <nonaka@netbsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include "efiboot.h"
30
31 void
delay(int us)32 delay(int us)
33 {
34 EFI_STATUS status;
35 CHAR16 errmsg[128];
36 char *uerrmsg;
37 int rv;
38
39 status = uefi_call_wrapper(BS->Stall, 1, us);
40 if (EFI_ERROR(status)) {
41 StatusToString(errmsg, status);
42 uerrmsg = NULL;
43 rv = ucs2_to_utf8(errmsg, &uerrmsg);
44 if (rv)
45 uerrmsg = "";
46 panic("couldn't delay %d us: %s(%" PRIxMAX ")\n", us, uerrmsg,
47 (uintmax_t)status);
48 if (rv == 0)
49 FreePool(uerrmsg);
50 }
51 }
52
53 void
wait_sec(int sec)54 wait_sec(int sec)
55 {
56 while (sec-- > 0)
57 delay(1000 * 1000);
58 }
59