diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3cf03ab..f4e25c6 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -300,6 +300,7 @@
 	bool
 	depends on PPC_PMAC && POWER4
 	select U3_DART
+	select GENERIC_TBSYNC
 	default y
 
 config PPC_PREP
@@ -314,6 +315,7 @@
 	bool "  Maple 970FX Evaluation Board"
 	select U3_DART
 	select MPIC_BROKEN_U3
+	select GENERIC_TBSYNC
 	default n
 	help
           This option enables support for the Maple 970FX Evaluation Board.
@@ -386,6 +388,11 @@
 	bool
 	default n
 
+config GENERIC_TBSYNC
+	bool
+	default y if CONFIG_PPC32 && CONFIG_SMP
+	default n
+
 source "drivers/cpufreq/Kconfig"
 
 config CPU_FREQ_PMAC
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 7a3e115..631149ea 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -21,6 +21,7 @@
 obj-$(CONFIG_RTAS_FLASH)	+= rtas_flash.o
 obj-$(CONFIG_RTAS_PROC)		+= rtas-proc.o
 obj-$(CONFIG_IBMVIO)		+= vio.o
+obj-$(CONFIG_GENERIC_TBSYNC)	+= smp-tbsync.o
 
 ifeq ($(CONFIG_PPC_MERGE),y)
 
diff --git a/arch/powerpc/kernel/smp-tbsync.c b/arch/powerpc/kernel/smp-tbsync.c
new file mode 100644
index 0000000..9adef3b
--- /dev/null
+++ b/arch/powerpc/kernel/smp-tbsync.c
@@ -0,0 +1,171 @@
+/*
+ * Smp timebase synchronization for ppc.
+ *
+ * Copyright (C) 2003 Samuel Rydh (samuel@ibrium.se)
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/unistd.h>
+#include <linux/init.h>
+#include <asm/atomic.h>
+#include <asm/smp.h>
+#include <asm/time.h>
+
+#define NUM_ITER		300
+
+enum {
+	kExit=0, kSetAndTest, kTest
+};
+
+static struct {
+	volatile u64		tb;
+	volatile u64		mark;
+	volatile int		cmd;
+	volatile int		handshake;
+	int			filler[2];
+
+	volatile int		ack;
+	int			filler2[7];
+
+	volatile int		race_result;
+} *tbsync;
+
+static volatile int		running;
+
+static void __devinit enter_contest(u64 mark, long add)
+{
+	while (get_tb() < mark)
+		tbsync->race_result = add;
+}
+
+void __devinit smp_generic_take_timebase(void)
+{
+	int cmd;
+	u64 tb;
+
+	local_irq_disable();
+	while (!running)
+		barrier();
+	rmb();
+
+	for (;;) {
+		tbsync->ack = 1;
+		while (!tbsync->handshake)
+			barrier();
+		rmb();
+
+		cmd = tbsync->cmd;
+		tb = tbsync->tb;
+		mb();
+		tbsync->ack = 0;
+		if (cmd == kExit)
+			break;
+
+		while (tbsync->handshake)
+			barrier();
+		if (cmd == kSetAndTest)
+			set_tb(tb >> 32, tb & 0xfffffffful);
+		enter_contest(tbsync->mark, -1);
+	}
+	local_irq_enable();
+}
+
+static int __devinit start_contest(int cmd, long offset, int num)
+{
+	int i, score=0;
+	u64 tb;
+	long mark;
+
+	tbsync->cmd = cmd;
+
+	local_irq_disable();
+	for (i = -3; i < num; ) {
+		tb = get_tb() + 400;
+		tbsync->tb = tb + offset;
+		tbsync->mark = mark = tb + 400;
+
+		wmb();
+
+		tbsync->handshake = 1;
+		while (tbsync->ack)
+			barrier();
+
+		while (get_tb() <= tb)
+			barrier();
+		tbsync->handshake = 0;
+		enter_contest(mark, 1);
+
+		while (!tbsync->ack)
+			barrier();
+
+		if (i++ > 0)
+			score += tbsync->race_result;
+	}
+	local_irq_enable();
+	return score;
+}
+
+void __devinit smp_generic_give_timebase(void)
+{
+	int i, score, score2, old, min=0, max=5000, offset=1000;
+
+	printk("Synchronizing timebase\n");
+
+	/* if this fails then this kernel won't work anyway... */
+	tbsync = kmalloc( sizeof(*tbsync), GFP_KERNEL );
+	memset( tbsync, 0, sizeof(*tbsync) );
+	mb();
+	running = 1;
+
+	while (!tbsync->ack)
+		barrier();
+
+	printk("Got ack\n");
+
+	/* binary search */
+	for (old = -1; old != offset ; offset = (min+max) / 2) {
+		score = start_contest(kSetAndTest, offset, NUM_ITER);
+
+		printk("score %d, offset %d\n", score, offset );
+
+		if( score > 0 )
+			max = offset;
+		else
+			min = offset;
+		old = offset;
+	}
+	score = start_contest(kSetAndTest, min, NUM_ITER);
+	score2 = start_contest(kSetAndTest, max, NUM_ITER);
+
+	printk("Min %d (score %d), Max %d (score %d)\n",
+	       min, score, max, score2);
+	score = abs(score);
+	score2 = abs(score2);
+	offset = (score < score2) ? min : max;
+
+	/* guard against inaccurate mttb */
+	for (i = 0; i < 10; i++) {
+		start_contest(kSetAndTest, offset, NUM_ITER/10);
+
+		if ((score2 = start_contest(kTest, offset, NUM_ITER)) < 0)
+			score2 = -score2;
+		if (score2 <= score || score2 < 20)
+			break;
+	}
+	printk("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
+
+	/* exiting */
+	tbsync->cmd = kExit;
+	wmb();
+	tbsync->handshake = 1;
+	while (tbsync->ack)
+		barrier();
+	tbsync->handshake = 0;
+	kfree(tbsync);
+	tbsync = NULL;
+	running = 0;
+}
diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index 42677cc..b987164 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -89,12 +89,14 @@
 	bool "  Apple G5 based machines"
 	default y
 	select U3_DART
+	select GENERIC_TBSYNC
 
 config PPC_MAPLE
 	depends on PPC_MULTIPLATFORM
 	bool "  Maple 970FX Evaluation Board"
 	select U3_DART
 	select MPIC_BROKEN_U3
+	select GENERIC_TBSYNC
 	default n
 	help
           This option enables support for the Maple 970FX Evaluation Board.
@@ -182,6 +184,9 @@
 	depends on PPC_MAPLE
 	default y
 
+config GENERIC_TBSYNC
+	def_bool n
+
 config PPC_PMAC64
 	bool
 	depends on PPC_PMAC
diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index 430cb39..f597c29 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -51,11 +51,6 @@
 
 obj-$(CONFIG_PPC_MAPLE)		+= udbg_16550.o
 
-ifdef CONFIG_SMP
-obj-$(CONFIG_PPC_PMAC)		+= smp-tbsync.o
-obj-$(CONFIG_PPC_MAPLE)		+= smp-tbsync.o
-endif
-
 obj-$(CONFIG_KPROBES)		+= kprobes.o
 
 CFLAGS_ioctl32.o += -Ifs/
diff --git a/arch/ppc64/kernel/smp-tbsync.c b/arch/ppc64/kernel/smp-tbsync.c
deleted file mode 100644
index 7d8ec99..0000000
--- a/arch/ppc64/kernel/smp-tbsync.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Smp timebase synchronization for ppc.
- *
- * Copyright (C) 2003 Samuel Rydh (samuel@ibrium.se)
- *
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/unistd.h>
-#include <linux/init.h>
-#include <asm/atomic.h>
-#include <asm/smp.h>
-#include <asm/time.h>
-
-#define NUM_ITER		300
-
-enum {
-	kExit=0, kSetAndTest, kTest
-};
-
-static struct {
-	volatile long		tb;
-	volatile long		mark;
-	volatile int		cmd;
-	volatile int		handshake;
-	int			filler[3];
-
-	volatile int		ack;
-	int			filler2[7];
-
-	volatile int		race_result;
-} *tbsync;
-
-static volatile int		running;
-
-static void __devinit
-enter_contest( long mark, long add )
-{
-	while( (long)(mftb() - mark) < 0 )
-		tbsync->race_result = add;
-}
-
-void __devinit
-smp_generic_take_timebase( void )
-{
-	int cmd;
-	long tb;
-
-	local_irq_disable();
-	while( !running )
-		;
-	rmb();
-
-	for( ;; ) {
-		tbsync->ack = 1;
-		while( !tbsync->handshake )
-			;
-		rmb();
-
-		cmd = tbsync->cmd;
-		tb = tbsync->tb;
-		tbsync->ack = 0;
-		if( cmd == kExit )
-			return;
-
-		if( cmd == kSetAndTest ) {
-			while( tbsync->handshake )
-				;
-			asm volatile ("mttbl %0" :: "r" (tb & 0xfffffffful) );
-			asm volatile ("mttbu %0" :: "r" (tb >> 32) );
-		} else {
-			while( tbsync->handshake )
-				;
-		}
-		enter_contest( tbsync->mark, -1 );
-	}
-	local_irq_enable();
-}
-
-static int __devinit
-start_contest( int cmd, long offset, long num )
-{
-	int i, score=0;
-	long tb, mark;
-
-	tbsync->cmd = cmd;
-
-	local_irq_disable();
-	for( i=-3; i<num; ) {
-		tb = (long)mftb() + 400;
-		tbsync->tb = tb + offset;
-		tbsync->mark = mark = tb + 400;
-
-		wmb();
-
-		tbsync->handshake = 1;
-		while( tbsync->ack )
-			;
-
-		while( (long)(mftb() - tb) <= 0 )
-			;
-		tbsync->handshake = 0;
-		enter_contest( mark, 1 );
-
-		while( !tbsync->ack )
-			;
-
-	       	if ((tbsync->tb ^ (long)mftb()) & 0x8000000000000000ul)
-			continue;
-		if( i++ > 0 )
-			score += tbsync->race_result;
-	}
-	local_irq_enable();
-	return score;
-}
-
-void __devinit
-smp_generic_give_timebase( void )
-{
-	int i, score, score2, old, min=0, max=5000, offset=1000;
-
-	printk("Synchronizing timebase\n");
-
-	/* if this fails then this kernel won't work anyway... */
-	tbsync = kmalloc( sizeof(*tbsync), GFP_KERNEL );
-	memset( tbsync, 0, sizeof(*tbsync) );
-	mb();
-	running = 1;
-
-	while( !tbsync->ack )
-		;
-
-	printk("Got ack\n");
-
-	/* binary search */
-	for( old=-1 ; old != offset ; offset=(min+max)/2 ) {
-		score = start_contest( kSetAndTest, offset, NUM_ITER );
-
-		printk("score %d, offset %d\n", score, offset );
-
-		if( score > 0 )
-			max = offset;
-		else
-			min = offset;
-		old = offset;
-	}
-	score = start_contest( kSetAndTest, min, NUM_ITER );
-	score2 = start_contest( kSetAndTest, max, NUM_ITER );
-
-	printk( "Min %d (score %d), Max %d (score %d)\n", min, score, max, score2 );
-	score = abs( score );
-	score2 = abs( score2 );
-	offset = (score < score2) ? min : max;
-
-	/* guard against inaccurate mttb */
-	for( i=0; i<10; i++ ) {
-		start_contest( kSetAndTest, offset, NUM_ITER/10 );
-
-		if( (score2=start_contest(kTest, offset, NUM_ITER)) < 0 )
-			score2 = -score2;
-		if( score2 <= score || score2 < 20 )
-			break;
-	}
-	printk("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
-
-	/* exiting */
-	tbsync->cmd = kExit;
-	wmb();
-	tbsync->handshake = 1;
-	while( tbsync->ack )
-		;
-	tbsync->handshake = 0;
-	kfree( tbsync );
-	tbsync = NULL;
-	running = 0;
-}