pru: Initial support for the Beaglebone PRU

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

src/pru/pru1.c

@@ -0,0 +1,29 @@
+// Code to halt the unneeded PRU1
+//
+// Copyright (C) 2017  Kevin O'Connor <kevin@koconnor.net>
+//
+// This file may be distributed under the terms of the GNU GPLv3 license.
+
+#include <stdint.h> // uint32_t
+#include <pru/io.h> // __halt
+#include <rsc_types.h> // resource_table
+#include "compiler.h" // __section
+
+struct my_resource_table {
+    struct resource_table base;
+
+    uint32_t offset[1]; /* Should match 'num' in actual definition */
+} resourceTable __section(".resource_table") = {
+    {
+        1,              /* Resource table version: only version 1 is
+                         * supported by the current driver */
+        0,              /* number of entries in the table */
+        { 0, 0 },       /* reserved, must be zero */
+    },
+};
+
+int
+main(void)
+{
+    __halt();
+}