- Initial checkin of the freebios2 tree

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@784 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 24 insertions, 0 deletions

diff --git a/src/include/smp/spinlock.h b/src/include/smp/spinlock.h
new file mode 100644
index 0000000000..9e0f8af0a9
--- /dev/null
+++ b/src/include/smp/spinlock.h
@@ -0,0 +1,24 @@
+#ifndef SMP_SPINLOCK_H
+#define SMP_SPINLOCK_H
+
+#ifdef SMP
+#include <arch/smp/spinlock.h>
+#else /* !SMP */
+
+/* Most GCC versions have a nasty bug with empty initializers */
+#if (__GNUC__ > 2) 
+typedef struct { } spinlock_t;
+#define SPIN_LOCK_UNLOCKED (spinlock_t) { }
+#else
+typedef struct { int gcc_is_buggy; } spinlock_t;
+#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
+#endif
+
+#define barrier()		do {} while(0)
+#define spin_is_locked(lock)	0
+#define spin_unlock_wait(lock)	do {} while(0)
+#define spin_lock(lock)		do {} while(0)
+#define spin_unlock(lock)	do {} while(0)
+#endif
+
+#endif /* SMP_SPINLOCK_H */