2 files changed, 4 insertions, 0 deletions
diff --git a/sys/inc/arch/amd64/lapic.h b/sys/inc/arch/amd64/lapic.h
index b65f14b..4f82681 100644
--- a/sys/inc/arch/amd64/lapic.h
+++ b/sys/inc/arch/amd64/lapic.h
@@ -30,6 +30,8 @@
 #ifndef _MACHINE_LAPIC_H_
 #define _MACHINE_LAPIC_H_ 1
 
+#define LAPIC_TMR_VEC 0x81
+
 /*
  * Initialize the Local APIC on-board the
  * processor for the current core
diff --git a/sys/inc/arch/amd64/mcb.h b/sys/inc/arch/amd64/mcb.h
index eb63365..ccd71ce 100644
--- a/sys/inc/arch/amd64/mcb.h
+++ b/sys/inc/arch/amd64/mcb.h
@@ -40,11 +40,13 @@
  * @hwid: Hardware APIC ID
  * @xapic_io: MMIO base for the legacy xAPIC
  * @has_x2apic: Set if x2APIC mode is supported
+ * @lapic_tmr_freq: Frequency of Local APIC timer
  */
 struct mcb {
     uint32_t hwid;
     void *xapic_io;
     uint8_t has_x2apic : 1;
+    size_t lapic_tmr_freq;
 };
 
 #endif  /* !_MACHINE_MCB_H_ */