| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #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); |
| } |