diff options
Diffstat (limited to 'payloads/libpayload/arch/x86/timer.c')
| -rw-r--r-- | payloads/libpayload/arch/x86/timer.c | 52 |
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(); } |