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-rw-r--r--cpu/microblaze/timer.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/cpu/microblaze/timer.c b/cpu/microblaze/timer.c
new file mode 100644
index 0000000..be4fd57
--- /dev/null
+++ b/cpu/microblaze/timer.c
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/microblaze_timer.h>
+
+volatile int timestamp = 0;
+
+void reset_timer (void)
+{
+ timestamp = 0;
+}
+
+ulong get_timer (ulong base)
+{
+ return (timestamp - base);
+}
+
+void set_timer (ulong t)
+{
+ timestamp = t;
+}
+
+#ifdef CFG_INTC_0
+#ifdef CFG_TIMER_0
+extern void install_interrupt_handler (int irq, interrupt_handler_t * hdlr,
+ void *arg);
+
+microblaze_timer_t *tmr = (microblaze_timer_t *) (CFG_TIMER_0_ADDR);
+
+void timer_isr (void *arg)
+{
+ timestamp++;
+ tmr->control = tmr->control | TIMER_INTERRUPT;
+}
+
+void timer_init (void)
+{
+ tmr->loadreg = CFG_TIMER_0_PRELOAD;
+ tmr->control = TIMER_INTERRUPT | TIMER_RESET;
+ tmr->control =
+ TIMER_ENABLE | TIMER_ENABLE_INTR | TIMER_RELOAD | TIMER_DOWN_COUNT;
+ reset_timer ();
+ install_interrupt_handler (CFG_TIMER_0_IRQ, timer_isr, (void *)tmr);
+}
+#endif
+#endif