sh: Update sh timer function

Change to write/readX function and fix timer problem.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

2 files changed, 1 insertions, 99 deletions

diff --git a/cpu/sh4/Makefile b/cpu/sh4/Makefile
index d3c5eef6be2..3c96a49311f 100644
--- a/cpu/sh4/Makefile
+++ b/cpu/sh4/Makefile
@@ -29,7 +29,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(CPU).a
 
 SOBJS	= start.o
-COBJS	= cpu.o interrupts.o watchdog.o time.o cache.o
+COBJS	= cpu.o interrupts.o watchdog.o cache.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/cpu/sh4/time.c b/cpu/sh4/time.c
deleted file mode 100644
index 77e0ae29861..00000000000
--- a/cpu/sh4/time.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * (C) Copyright 2007
- * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
- *
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * 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/processor.h>
-
-#define TMU_MAX_COUNTER (~0UL)
-
-static void tmu_timer_start (unsigned int timer)
-{
-	if (timer > 2)
-		return;
-
-	*((volatile unsigned char *) TSTR) |= (1 << timer);
-}
-
-static void tmu_timer_stop (unsigned int timer)
-{
-	u8 val = *((volatile u8 *)TSTR);
-	if (timer > 2)
-		return;
-	*((volatile unsigned char *)TSTR) = val &~(1 << timer);
-}
-
-int timer_init (void)
-{
-	/* Divide clock by 4 */
-	*(volatile u16 *)TCR0 = 0;
-
-	tmu_timer_stop(0);
-	tmu_timer_start(0);
-	return 0;
-}
-
-/*
-   In theory we should return a true 64bit value (ie something that doesn't
-   overflow). However, we don't. Therefore if TMU runs at fastest rate of
-   6.75 MHz this value will wrap after u-boot has been running for approx
-   10 minutes.
-*/
-unsigned long long get_ticks (void)
-{
-	return (0 - *((volatile u32 *) TCNT0));
-}
-
-unsigned long get_timer (unsigned long base)
-{
-	return ((0 - *((volatile u32 *) TCNT0)) - base);
-}
-
-void set_timer (unsigned long t)
-{
-	*((volatile unsigned int *) TCNT0) = (0 - t);
-}
-
-void reset_timer (void)
-{
-	tmu_timer_stop(0);
-	set_timer (0);
-	tmu_timer_start(0);
-}
-
-void udelay (unsigned long usec)
-{
-	unsigned int start = get_timer (0);
-	unsigned int end = start + (usec * ((CONFIG_SYS_HZ + 500000) / 1000000));
-
-	while (get_timer (0) < end)
-		continue;
-}
-
-unsigned long get_tbclk (void)
-{
-	return CONFIG_SYS_HZ;
-}