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-rw-r--r--src/include/cpu/x86/mp.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mp.h b/src/include/cpu/x86/mp.h
index b9b4d5772c..0671b62551 100644
--- a/src/include/cpu/x86/mp.h
+++ b/src/include/cpu/x86/mp.h
@@ -150,5 +150,15 @@ int mp_park_aps(void);
void smm_initiate_relocation_parallel(void);
/* Send SMI to self with single execution. */
void smm_initiate_relocation(void);
+/* Make a CPU wait until the barrier is released */
+void barrier_wait(atomic_t *b);
+/*
+ * Make a CPU wait until the barrier is released, or timeout occurs
+ * returns 1 if timeout occurs before barier is released.
+ * returns 0 if barrier is released before timeout.
+ */
+int barrier_wait_timeout(atomic_t *b, uint32_t timeout_ms);
+/* Release a barrier so that other CPUs waiting for that barrier can continue */
+void release_barrier(atomic_t *b);
#endif /* _X86_MP_H_ */