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diff --git a/include/asm-mn10300/unit-asb2303/timex.h b/include/asm-mn10300/unit-asb2303/timex.h
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+++ b/include/asm-mn10300/unit-asb2303/timex.h
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+/* ASB2303-specific timer specifcations
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_UNIT_TIMEX_H
+#define _ASM_UNIT_TIMEX_H
+
+#ifndef __ASSEMBLY__
+#include <linux/irq.h>
+#endif /* __ASSEMBLY__ */
+
+#include <asm/timer-regs.h>
+#include <asm/unit/clock.h>
+
+/*
+ * jiffies counter specifications
+ */
+
+#define TMJCBR_MAX 0xffff
+#define TMJCBC TM01BC
+
+#define TMJCMD TM01MD
+#define TMJCBR TM01BR
+#define TMJCIRQ TM1IRQ
+#define TMJCICR TM1ICR
+#define TMJCICR_LEVEL GxICR_LEVEL_5
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_jiffies_counter(void)
+{
+ unsigned rate;
+ u16 md, t16;
+
+ /* use as little prescaling as possible to avoid losing accuracy */
+ md = TM0MD_SRC_IOCLK;
+ rate = MN10300_JCCLK / HZ;
+
+ if (rate > TMJCBR_MAX) {
+ md = TM0MD_SRC_IOCLK_8;
+ rate = MN10300_JCCLK / 8 / HZ;
+
+ if (rate > TMJCBR_MAX) {
+ md = TM0MD_SRC_IOCLK_32;
+ rate = MN10300_JCCLK / 32 / HZ;
+
+ if (rate > TMJCBR_MAX)
+ BUG();
+ }
+ }
+
+ TMJCBR = rate - 1;
+ t16 = TMJCBR;
+
+ TMJCMD =
+ md |
+ TM1MD_SRC_TM0CASCADE << 8 |
+ TM0MD_INIT_COUNTER |
+ TM1MD_INIT_COUNTER << 8;
+
+ TMJCMD =
+ md |
+ TM1MD_SRC_TM0CASCADE << 8 |
+ TM0MD_COUNT_ENABLE |
+ TM1MD_COUNT_ENABLE << 8;
+
+ t16 = TMJCMD;
+
+ TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
+ t16 = TMJCICR;
+}
+
+static inline void shutdown_jiffies_counter(void)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+
+/*
+ * timestamp counter specifications
+ */
+
+#define TMTSCBR_MAX 0xffffffff
+#define TMTSCBC TM45BC
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_timestamp_counter(void)
+{
+ /* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
+ * - count down from 4Gig-1 to 0 and wrap at IOCLK rate
+ */
+ TM45BR = TMTSCBR_MAX;
+
+ TM4MD = TM4MD_SRC_IOCLK;
+ TM4MD |= TM4MD_INIT_COUNTER;
+ TM4MD &= ~TM4MD_INIT_COUNTER;
+ TM4ICR = 0;
+
+ TM5MD = TM5MD_SRC_TM4CASCADE;
+ TM5MD |= TM5MD_INIT_COUNTER;
+ TM5MD &= ~TM5MD_INIT_COUNTER;
+ TM5ICR = 0;
+
+ TM5MD |= TM5MD_COUNT_ENABLE;
+ TM4MD |= TM4MD_COUNT_ENABLE;
+}
+
+static inline void shutdown_timestamp_counter(void)
+{
+ TM4MD = 0;
+ TM5MD = 0;
+}
+
+/*
+ * we use a cascaded pair of 16-bit down-counting timers to count I/O
+ * clock cycles for the purposes of time keeping
+ */
+typedef unsigned long cycles_t;
+
+static inline cycles_t read_timestamp_counter(void)
+{
+ return (cycles_t)TMTSCBC;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_TIMEX_H */