diff options
Diffstat (limited to 'src/cpu/samsung/exynos5-common/timer.c')
| -rw-r--r-- | src/cpu/samsung/exynos5-common/timer.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/cpu/samsung/exynos5-common/timer.c b/src/cpu/samsung/exynos5-common/timer.c index 6cd5f5dd35..ca15501bb7 100644 --- a/src/cpu/samsung/exynos5-common/timer.c +++ b/src/cpu/samsung/exynos5-common/timer.c @@ -25,6 +25,8 @@ #include <common.h> #include <arch/io.h> +#include <time.h> +#include <console/console.h> #include <cpu/samsung/exynos5-common/pwm.h> #include <cpu/samsung/exynos5-common/clk.h> #include <cpu/samsung/exynos5250/cpu.h> @@ -117,12 +119,17 @@ unsigned long timer_get_us(void) } /* delay x useconds */ -void __udelay(unsigned long usec) +void udelay(unsigned long usec) { - unsigned long count_value; + unsigned long start; - count_value = timer_get_us_down(); - while ((int)(count_value - timer_get_us_down()) < (int)usec) + start = timer_us(); + if ((start + usec) < start){ + printk(BIOS_EMERG, "udelay: %08lx is impossibly large\n", + usec); + usec = 1000000; + } + while ((timer_us() - start) < usec) ; } |