Index: genarch/src/ofw/ofw.c
===================================================================
--- genarch/src/ofw/ofw.c	(revision 8cd20b70a0088e1be6c075558d55af632961f0af)
+++ genarch/src/ofw/ofw.c	(revision 8cd20b70a0088e1be6c075558d55af632961f0af)
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2005 Martin Decky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <genarch/ofw/ofw.h>
+#include <arch/asm.h>
+#include <stdarg.h>
+#include <cpu.h>
+#include <arch/types.h>
+
+ofw_entry ofw;
+
+phandle ofw_chosen;
+ihandle ofw_stdout;
+
+void ofw_init(void)
+{
+	ofw_chosen = ofw_find_device("/chosen");
+	if (ofw_chosen == -1)
+		ofw_done();
+	
+	if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0)
+		ofw_stdout = 0;
+}
+
+void ofw_done(void)
+{
+	(void) ofw_call("exit", 0, 0);
+	cpu_halt();
+}
+
+__native ofw_call(const char *service, const int nargs, const int nret, ...)
+{
+	va_list list;
+	ofw_args_t args;
+	int i;
+	
+	args.service = service;
+	args.nargs = nargs;
+	args.nret = nret;
+	
+	va_start(list, nret);
+	for (i = 0; i < nargs; i++)
+		args.args[i] = va_arg(list, ofw_arg_t);
+	va_end(list);
+	
+	for (i = 0; i < nret; i++)
+		args.args[i + nargs] = 0;
+	
+	ofw(&args);
+	
+	return args.args[nargs];
+}
+
+void ofw_putchar(const char ch)
+{
+	if (ofw_stdout == 0)
+		return;
+	
+	(void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1);
+}
+
+phandle ofw_find_device(const char *name)
+{
+	return (phandle) ofw_call("finddevice", 1, 1, name);
+}
+
+int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen)
+{
+	return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen);
+}
+
+void *ofw_claim(const void *addr, const int size, const int align)
+{
+	return (void *) ofw_call("claim", 3, 1, addr, size, align);
+}