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c966075f46
Change-Id: I4d6c6810b91294a7e401a4a1a446218c04c98e55 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/21590 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <timer.h>
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#include <delay.h>
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#include <thread.h>
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__attribute__((weak)) void init_timer(void) { /* do nothing */ }
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void udelay(unsigned int usec)
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{
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struct stopwatch sw;
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/*
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* As the timer granularity is in microseconds pad the
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* requested delay by one to get at least >= requested usec delay.
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*/
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usec += 1;
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if (!thread_yield_microseconds(usec))
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return;
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stopwatch_init_usecs_expire(&sw, usec);
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stopwatch_wait_until_expired(&sw);
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}
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