Moved from freebios

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@862 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 31 insertions, 0 deletions

diff --git a/src/arch/ppc/lib/timer.c b/src/arch/ppc/lib/timer.c
new file mode 100644
index 0000000000..8f968f1a5f
--- /dev/null
+++ b/src/arch/ppc/lib/timer.c
@@ -0,0 +1,31 @@
+/* $Id$ */
+/* Copyright 2000  AG Electronics Ltd. */
+/* This code is distributed without warranty under the GPL v2 (see COPYING) */
+
+#include <timer.h>
+#include <bsp.h>
+
+unsigned get_hz(void)
+{
+	return bsp_clock_speed();
+}
+
+unsigned ticks_since_boot(void)
+{
+	extern unsigned long long _timebase(void);
+	return (unsigned) (_timebase());
+}
+
+void sleep_ticks(unsigned ticks)
+{
+	unsigned then = ticks + ticks_since_boot();
+	while(ticks_since_boot() < then)
+		;
+}
+
+void udelay(int usecs)
+{
+	unsigned ticksperusec = get_hz() / 1000000;
+
+	sleep_ticks(ticksperusec * usecs);
+}