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 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 54 wait_sec(int sec) 55 { 56 while (sec-- > 0) 57 delay(1000 * 1000); 58 } 59