1 files changed, 12 insertions, 3 deletions
diff --git a/sys/dev/acpi/uacpi.c b/sys/dev/acpi/uacpi.c
index 03d0ecf..b133288 100644
--- a/sys/dev/acpi/uacpi.c
+++ b/sys/dev/acpi/uacpi.c
@@ -41,10 +41,10 @@
 #include <machine/cdefs.h>
 #include <machine/pio.h>
 #include <machine/cpu.h>
+#include <machine/intr.h>
 #if defined(__x86_64__)
 #include <machine/idt.h>
 #include <machine/ioapic.h>
-#include <machine/intr.h>
 #endif  /* __x86_64__ */
 #include <dev/acpi/uacpi.h>
 #include <dev/acpi/acpi.h>
@@ -513,9 +513,18 @@ uacpi_u64
 uacpi_kernel_get_nanoseconds_since_boot(void)
 {
     static uacpi_u64 time = 0;
+    static struct timer tmr = {0};
+    tmrr_status_t tmr_error;
+
+    if (time == 0) {
+        tmr_error = req_timer(TIMER_GP, &tmr);
+        if (tmr_error != TMRR_SUCCESS) {
+            time += 1000000;
+            return time;
+        }
+    }
 
-    /* TODO */
-    time += 1000000;
+    time = tmr.get_time_nsec();
     return time;
 }