Initial revision
diff --git a/cpu/mpc824x/interrupts.c b/cpu/mpc824x/interrupts.c
new file mode 100644
index 0000000..2011671
--- /dev/null
+++ b/cpu/mpc824x/interrupts.c
@@ -0,0 +1,185 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Rob Taylor, Flying Pig Systems. robt@flyingpig.com
+ *
+ * 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 <mpc824x.h>
+#include <asm/processor.h>
+#include <asm/pci_io.h>
+#include <commproc.h>
+#include "drivers/epic.h"
+
+/****************************************************************************/
+
+unsigned decrementer_count; /* count val for 1e6/HZ microseconds */
+
+static __inline__ unsigned long get_msr (void)
+{
+ unsigned long msr;
+
+ asm volatile ("mfmsr %0":"=r" (msr):);
+
+ return msr;
+}
+
+static __inline__ void set_msr (unsigned long msr)
+{
+ asm volatile ("mtmsr %0"::"r" (msr));
+}
+
+static __inline__ unsigned long get_dec (void)
+{
+ unsigned long val;
+
+ asm volatile ("mfdec %0":"=r" (val):);
+
+ return val;
+}
+
+
+static __inline__ void set_dec (unsigned long val)
+{
+ asm volatile ("mtdec %0"::"r" (val));
+}
+
+
+void enable_interrupts (void)
+{
+ set_msr (get_msr () | MSR_EE);
+}
+
+/* returns flag if MSR_EE was set before */
+int disable_interrupts (void)
+{
+ ulong msr = get_msr ();
+
+ set_msr (msr & ~MSR_EE);
+ return ((msr & MSR_EE) != 0);
+}
+
+/****************************************************************************/
+
+int interrupt_init (void)
+{
+ decrementer_count = (get_bus_freq (0) / 4) / CFG_HZ;
+
+ /*
+ * It's all broken at the moment and I currently don't need
+ * interrupts. If you want to fix it, have a look at the epic
+ * drivers in dink32 v12. They do everthing and Motorola said
+ * I could use the dink source in this project as long as
+ * copyright notices remain intact.
+ */
+
+ epicInit (EPIC_DIRECT_IRQ, 0);
+
+ set_dec (decrementer_count);
+
+ set_msr (get_msr () | MSR_EE);
+
+ return (0);
+}
+
+/****************************************************************************/
+
+/*
+ * Handle external interrupts
+ */
+void external_interrupt (struct pt_regs *regs)
+{
+ register unsigned long temp;
+
+ pci_readl (CFG_EUMB_ADDR + EPIC_PROC_INT_ACK_REG, temp);
+ sync (); /* i'm not convinced this is needed, but dink source has it */
+ temp &= 0xff; /*get vector */
+
+ /*TODO: handle them -... */
+ epicEOI ();
+}
+
+/****************************************************************************/
+
+/*
+ * blank int handlers.
+ */
+
+void
+irq_install_handler (int vec, interrupt_handler_t * handler, void *arg)
+{
+}
+
+void irq_free_handler (int vec)
+{
+
+}
+
+/*TODO: some handlers for winbond and 87308 interrupts
+ and what about generic pci inteerupts?
+ vga?
+ */
+
+volatile ulong timestamp = 0;
+
+void timer_interrupt (struct pt_regs *regs)
+{
+ /* Restore Decrementer Count */
+ set_dec (decrementer_count);
+
+ timestamp++;
+
+#if defined(CONFIG_WATCHDOG)
+ if ((timestamp % (CFG_HZ / 2)) == 0) {
+#if defined(CONFIG_OXC)
+ {
+ extern void oxc_wdt_reset (void);
+
+ oxc_wdt_reset ();
+ }
+#endif
+ }
+#endif /* CONFIG_WATCHDOG */
+#if defined(CONFIG_SHOW_ACTIVITY) && defined(CONFIG_OXC)
+ if ((timestamp % (CFG_HZ / 10)) == 0) {
+ {
+ extern void oxc_toggle_activeled (void);
+
+ oxc_toggle_activeled ();
+ }
+ }
+#endif
+}
+
+void reset_timer (void)
+{
+ timestamp = 0;
+}
+
+ulong get_timer (ulong base)
+{
+ return (timestamp - base);
+}
+
+void set_timer (ulong t)
+{
+ timestamp = t;
+}