diff --git a/arch/sh/lib/time.c b/arch/sh/lib/time.c
index a650c94..d531a49 100644
--- a/arch/sh/lib/time.c
+++ b/arch/sh/lib/time.c
@@ -15,52 +15,20 @@
 #include <asm/io.h>
 
 #if defined(CONFIG_CPU_SH3)
-struct tmu_regs {
-	u8	tocr;
-	u8	reserved0;
-	u8	tstr;
-	u8	reserved1;
-	u32	tcor0;
-	u32	tcnt0;
-	u16	tcr0;
-	u16	reserved2;
-	u32	tcor1;
-	u32	tcnt1;
-	u16	tcr1;
-	u16	reserved3;
-	u32	tcor2;
-	u32	tcnt2;
-	u16	tcr2;
-	u16	reserved4;
-	u32	tcpr2;
-};
+#define TSTR	0x2
+#define TCNT0	0x8
+#define TCR0	0xc
 #endif /* CONFIG_CPU_SH3 */
 
 #if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_RMOBILE)
-struct tmu_regs {
-	u32	reserved;
-	u8	tstr;
-	u8	reserved2[3];
-	u32	tcor0;
-	u32	tcnt0;
-	u16	tcr0;
-	u16	reserved3;
-	u32	tcor1;
-	u32	tcnt1;
-	u16	tcr1;
-	u16	reserved4;
-	u32	tcor2;
-	u32	tcnt2;
-	u16	tcr2;
-	u16	reserved5;
-};
+#define TSTR	0x4
+#define TCNT0	0xc
+#define TCR0	0x10
 #endif /* CONFIG_CPU_SH4 */
 
-#define TCR_TPSC 0x07
+#define TCR_TPSC	0x07
 #define TSTR_STR0	BIT(0)
 
-static struct tmu_regs *tmu = (struct tmu_regs *)TMU_BASE;
-
 unsigned long get_tbclk(void)
 {
 #ifdef CONFIG_RCAR_GEN2
@@ -72,14 +40,14 @@ unsigned long get_tbclk(void)
 
 unsigned long timer_read_counter(void)
 {
-	return ~readl(&tmu->tcnt0);
+	return ~readl(TMU_BASE + TCNT0);
 }
 
 int timer_init(void)
 {
-	writew(readw(&tmu->tcr0) & ~TCR_TPSC, &tmu->tcr0);
-	writeb(readb(&tmu->tstr) & ~TSTR_STR0, &tmu->tstr);
-	writeb(readb(&tmu->tstr) | TSTR_STR0, &tmu->tstr);
+	writew(readw(TMU_BASE + TCR0) & ~TCR_TPSC, TMU_BASE + TCR0);
+	writeb(readb(TMU_BASE + TSTR) & ~TSTR_STR0, TMU_BASE + TSTR);
+	writeb(readb(TMU_BASE + TSTR) | TSTR_STR0, TMU_BASE + TSTR);
 
 	return 0;
 }