pru: Initial support for the Beaglebone PRU

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

src/pru/internal.h

@@ -0,0 +1,18 @@
+#ifndef __PRU_INTERNAL_H
+#define __PRU_INTERNAL_H
+// Local definitions for PRU code
+
+#define IEP_IRQ        0
+#define GOT_ARM_IRQ    1
+#define WAKE_ARM_IRQ   2
+
+#define IEP_EVENT      7
+#define GOT_ARM_EVENT  17
+#define WAKE_ARM_EVENT 16
+
+#define R31_IRQ_OFFSET 30
+
+// console.c
+void console_init(void);
+
+#endif // internal.h