diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/pc80/pc/i8254.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/src/drivers/pc80/pc/i8254.c b/src/drivers/pc80/pc/i8254.c index 5090f0c85b..9d23d4697e 100644 --- a/src/drivers/pc80/pc/i8254.c +++ b/src/drivers/pc80/pc/i8254.c @@ -11,7 +11,6 @@ * GNU General Public License for more details. */ -#include <arch/early_variables.h> #include <arch/io.h> #include <commonlib/helpers.h> #include <cpu/x86/tsc.h> @@ -107,23 +106,19 @@ bad_ctc: } #if CONFIG(UNKNOWN_TSC_RATE) -static u32 g_timer_tsc CAR_GLOBAL; +static u32 g_timer_tsc; unsigned long tsc_freq_mhz(void) { - u32 tsc; + if (g_timer_tsc > 0) + return g_timer_tsc; - tsc = car_get_var(g_timer_tsc); - if (tsc > 0) - return tsc; - - tsc = calibrate_tsc_with_pit(); + g_timer_tsc = calibrate_tsc_with_pit(); /* Set some semi-ridiculous rate if approximation fails. */ - if (tsc == 0) - tsc = 5000; + if (g_timer_tsc == 0) + g_timer_tsc = 5000; - car_set_var(g_timer_tsc, tsc); - return tsc; + return g_timer_tsc; } #endif |