Added debug flags and simple debug serial driver

1 files changed, 22 insertions, 0 deletions

diff --git a/include/apos/debug.h b/include/apos/debug.h
new file mode 100644
index 0000000..021612d
--- /dev/null
+++ b/include/apos/debug.h
@@ -0,0 +1,22 @@
+#ifndef APOS_DEBUG_H
+#define APOS_DEBUG_H
+
+#include <apos/attrs.h>
+
+#ifdef DEBUG
+enum serial_dev_t {
+	/* only the NS16550A and compatible at the moment */
+	NS16550A,
+};
+
+void __fmt(1, 2) dbg(const char *fmt, ...);
+void dbg_init(void *pt, enum serial_dev_t dev);
+
+#else
+
+#define dbg(...)
+#define dbg_init(...)
+
+#endif /* DEBUG */
+
+#endif /* APOS_DEBUG_H */