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-rw-r--r--payloads/libpayload/arch/x86/timer.c52
1 files changed, 7 insertions, 45 deletions
diff --git a/payloads/libpayload/arch/x86/timer.c b/payloads/libpayload/arch/x86/timer.c
index 40e81c4ced..e0cefb819a 100644
--- a/payloads/libpayload/arch/x86/timer.c
+++ b/payloads/libpayload/arch/x86/timer.c
@@ -28,8 +28,8 @@
*/
/**
- * @file i386/timer.c
- * i386 specific timer routines
+ * @file x86/timer.c
+ * x86 specific timer routines
*/
#include <libpayload.h>
@@ -39,7 +39,7 @@
* @ingroup arch
* Global variable containing the speed of the processor in KHz.
*/
-u32 cpu_khz;
+uint32_t cpu_khz;
/**
* Calculate the speed of the processor for use in delays.
@@ -77,50 +77,12 @@ unsigned int get_cpu_speed(void)
return cpu_khz;
}
-static inline void _delay(unsigned long long delta)
+uint64_t timer_hz(void)
{
- unsigned long long timeout = rdtsc() + delta;
- while (rdtsc() < timeout) ;
+ return lib_sysinfo.cpu_khz * 1000;
}
-/**
- * Delay for a specified number of nanoseconds.
- *
- * @param n Number of nanoseconds to delay for.
- */
-void ndelay(unsigned int n)
-{
- _delay((unsigned long long)n * cpu_khz / 1000000);
-}
-
-/**
- * Delay for a specified number of microseconds.
- *
- * @param n Number of microseconds to delay for.
- */
-void udelay(unsigned int n)
-{
- _delay((unsigned long long)n * cpu_khz / 1000);
-}
-
-/**
- * Delay for a specified number of milliseconds.
- *
- * @param m Number of milliseconds to delay for.
- */
-void mdelay(unsigned int m)
-{
- _delay((unsigned long long)m * cpu_khz);
-}
-
-/**
- * Delay for a specified number of seconds.
- *
- * @param s Number of seconds to delay for.
- */
-void delay(unsigned int s)
+uint64_t timer_raw_value(void)
{
- int i;
- for (i=0; i<1000; i++)
- _delay((unsigned long long)s * cpu_khz);
+ return rdtsc();
}