c32c85308f
Change-Id: Ibdda3dc52f5b61077f91f4cffb4f86b2955aab74 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/26735 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
39 lines
1005 B
C
39 lines
1005 B
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright 2014 Google Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <compiler.h>
|
|
#include <timer.h>
|
|
#include <delay.h>
|
|
#include <thread.h>
|
|
|
|
__weak void init_timer(void) { /* do nothing */ }
|
|
|
|
void udelay(unsigned int usec)
|
|
{
|
|
struct stopwatch sw;
|
|
|
|
/*
|
|
* As the timer granularity is in microseconds pad the
|
|
* requested delay by one to get at least >= requested usec delay.
|
|
*/
|
|
usec += 1;
|
|
|
|
if (!thread_yield_microseconds(usec))
|
|
return;
|
|
|
|
stopwatch_init_usecs_expire(&sw, usec);
|
|
stopwatch_wait_until_expired(&sw);
|
|
}
|