diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index 2873149da7f0..74d25f69934e 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -5,7 +5,7 @@
 
 # Common objects
 obj-y 			:= time.o irq.o clock.o serial.o io.o id.o psc.o \
-			   gpio.o devices.o dma.o usb.o
+			   gpio.o devices.o dma.o usb.o common.o
 
 obj-$(CONFIG_DAVINCI_MUX)		+= mux.o
 obj-$(CONFIG_CP_INTC)			+= cp_intc.o
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
index 087441313dd7..5ac2f565d860 100644
--- a/arch/arm/mach-davinci/board-dm355-evm.c
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -37,6 +37,7 @@
 #include <mach/serial.h>
 #include <mach/nand.h>
 #include <mach/mmc.h>
+#include <mach/common.h>
 
 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE		0x01e10000
 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x02000000
@@ -188,7 +189,6 @@ static struct davinci_uart_config uart_config __initdata = {
 
 static void __init dm355_evm_map_io(void)
 {
-	davinci_map_common_io();
 	dm355_init();
 }
 
diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c
index d4562f5ff93b..28c9008df4f4 100644
--- a/arch/arm/mach-davinci/board-dm355-leopard.c
+++ b/arch/arm/mach-davinci/board-dm355-leopard.c
@@ -36,6 +36,7 @@
 #include <mach/serial.h>
 #include <mach/nand.h>
 #include <mach/mmc.h>
+#include <mach/common.h>
 
 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE		0x01e10000
 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE	0x02000000
@@ -187,7 +188,6 @@ static struct davinci_uart_config uart_config __initdata = {
 
 static void __init dm355_leopard_map_io(void)
 {
-	davinci_map_common_io();
 	dm355_init();
 }
 
diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index 02e7cdaf8daa..cfe89c409735 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -45,6 +45,7 @@
 #include <mach/psc.h>
 #include <mach/nand.h>
 #include <mach/mmc.h>
+#include <mach/common.h>
 
 #define DM644X_EVM_PHY_MASK		(0x2)
 #define DM644X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
@@ -609,7 +610,6 @@ static struct davinci_uart_config uart_config __initdata = {
 static void __init
 davinci_evm_map_io(void)
 {
-	davinci_map_common_io();
 	dm644x_init();
 }
 
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index aedde3cdb82f..becae51d6dd1 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -47,6 +47,7 @@
 #include <mach/i2c.h>
 #include <mach/mmc.h>
 #include <mach/emac.h>
+#include <mach/common.h>
 
 #define DM646X_EVM_PHY_MASK		(0x2)
 #define DM646X_EVM_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
@@ -265,7 +266,6 @@ static void __init evm_init_i2c(void)
 
 static void __init davinci_map_io(void)
 {
-	davinci_map_common_io();
 	dm646x_init();
 }
 
diff --git a/arch/arm/mach-davinci/board-sffsdr.c b/arch/arm/mach-davinci/board-sffsdr.c
index 913dad93540b..938b4467809e 100644
--- a/arch/arm/mach-davinci/board-sffsdr.c
+++ b/arch/arm/mach-davinci/board-sffsdr.c
@@ -53,6 +53,7 @@
 #include <mach/serial.h>
 #include <mach/psc.h>
 #include <mach/mux.h>
+#include <mach/common.h>
 
 #define SFFSDR_PHY_MASK		(0x2)
 #define SFFSDR_MDIO_FREQUENCY	(2200000) /* PHY bus frequency */
@@ -152,7 +153,6 @@ static struct davinci_uart_config uart_config __initdata = {
 
 static void __init davinci_sffsdr_map_io(void)
 {
-	davinci_map_common_io();
 	dm644x_init();
 }
 
diff --git a/arch/arm/mach-davinci/common.c b/arch/arm/mach-davinci/common.c
new file mode 100644
index 000000000000..9a5486f5519c
--- /dev/null
+++ b/arch/arm/mach-davinci/common.c
@@ -0,0 +1,55 @@
+/*
+ * Code commons to all DaVinci SoCs.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2009 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+
+#include <asm/tlb.h>
+#include <asm/mach/map.h>
+
+#include <mach/common.h>
+
+struct davinci_soc_info davinci_soc_info;
+EXPORT_SYMBOL(davinci_soc_info);
+
+void __init davinci_common_init(struct davinci_soc_info *soc_info)
+{
+	int ret;
+
+	if (!soc_info) {
+		ret = -EINVAL;
+		goto err;
+	}
+
+	memcpy(&davinci_soc_info, soc_info, sizeof(struct davinci_soc_info));
+
+	if (davinci_soc_info.io_desc && (davinci_soc_info.io_desc_num > 0))
+		iotable_init(davinci_soc_info.io_desc,
+				davinci_soc_info.io_desc_num);
+
+	/*
+	 * Normally devicemaps_init() would flush caches and tlb after
+	 * mdesc->map_io(), but we must also do it here because of the CPU
+	 * revision check below.
+	 */
+	local_flush_tlb_all();
+	flush_cache_all();
+
+	/*
+	 * We want to check CPU revision early for cpu_is_xxxx() macros.
+	 * IO space mapping must be initialized before we can do that.
+	 */
+	davinci_check_revision();
+
+	return;
+
+err:
+	pr_err("davinci_common_init: SoC Initialization failed\n");
+}
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index c02115f1eb9b..6d1abfdcfb72 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -16,6 +16,8 @@
 
 #include <linux/spi/spi.h>
 
+#include <asm/mach/map.h>
+
 #include <mach/dm355.h>
 #include <mach/clock.h>
 #include <mach/cputype.h>
@@ -23,6 +25,7 @@
 #include <mach/psc.h>
 #include <mach/mux.h>
 #include <mach/irqs.h>
+#include <mach/common.h>
 
 #include "clock.h"
 #include "mux.h"
@@ -522,8 +525,23 @@ static struct platform_device dm355_edma_device = {
 
 /*----------------------------------------------------------------------*/
 
+static struct map_desc dm355_io_desc[] = {
+	{
+		.virtual	= IO_VIRT,
+		.pfn		= __phys_to_pfn(IO_PHYS),
+		.length		= IO_SIZE,
+		.type		= MT_DEVICE
+	},
+};
+
+static struct davinci_soc_info davinci_soc_info_dm355 = {
+	.io_desc		= dm355_io_desc,
+	.io_desc_num		= ARRAY_SIZE(dm355_io_desc),
+};
+
 void __init dm355_init(void)
 {
+	davinci_common_init(&davinci_soc_info_dm355);
 	davinci_clk_init(dm355_clks);
 	davinci_mux_register(dm355_pins, ARRAY_SIZE(dm355_pins));;
 }
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 0419d571bdca..79f113698b0b 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -13,6 +13,8 @@
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 
+#include <asm/mach/map.h>
+
 #include <mach/dm644x.h>
 #include <mach/clock.h>
 #include <mach/cputype.h>
@@ -20,6 +22,7 @@
 #include <mach/irqs.h>
 #include <mach/psc.h>
 #include <mach/mux.h>
+#include <mach/common.h>
 
 #include "clock.h"
 #include "mux.h"
@@ -463,8 +466,23 @@ void dm644x_init_emac(struct emac_platform_data *unused) {}
 
 #endif
 
+static struct map_desc dm644x_io_desc[] = {
+	{
+		.virtual	= IO_VIRT,
+		.pfn		= __phys_to_pfn(IO_PHYS),
+		.length		= IO_SIZE,
+		.type		= MT_DEVICE
+	},
+};
+
+static struct davinci_soc_info davinci_soc_info_dm644x = {
+	.io_desc		= dm644x_io_desc,
+	.io_desc_num		= ARRAY_SIZE(dm644x_io_desc),
+};
+
 void __init dm644x_init(void)
 {
+	davinci_common_init(&davinci_soc_info_dm644x);
 	davinci_clk_init(dm644x_clks);
 	davinci_mux_register(dm644x_pins, ARRAY_SIZE(dm644x_pins));
 }
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 975ed062ce24..8547ec02c9e1 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -13,6 +13,8 @@
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 
+#include <asm/mach/map.h>
+
 #include <mach/dm646x.h>
 #include <mach/clock.h>
 #include <mach/cputype.h>
@@ -20,6 +22,7 @@
 #include <mach/irqs.h>
 #include <mach/psc.h>
 #include <mach/mux.h>
+#include <mach/common.h>
 
 #include "clock.h"
 #include "mux.h"
@@ -442,8 +445,23 @@ void dm646x_init_emac(struct emac_platform_data *unused) {}
 
 #endif
 
+static struct map_desc dm646x_io_desc[] = {
+	{
+		.virtual	= IO_VIRT,
+		.pfn		= __phys_to_pfn(IO_PHYS),
+		.length		= IO_SIZE,
+		.type		= MT_DEVICE
+	},
+};
+
+static struct davinci_soc_info davinci_soc_info_dm646x = {
+	.io_desc		= dm646x_io_desc,
+	.io_desc_num		= ARRAY_SIZE(dm646x_io_desc),
+};
+
 void __init dm646x_init(void)
 {
+	davinci_common_init(&davinci_soc_info_dm646x);
 	davinci_clk_init(dm646x_clks);
 	davinci_mux_register(dm646x_pins, ARRAY_SIZE(dm646x_pins));
 }
diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h
index 191770976250..770a1baa97dc 100644
--- a/arch/arm/mach-davinci/include/mach/common.h
+++ b/arch/arm/mach-davinci/include/mach/common.h
@@ -17,7 +17,6 @@ struct sys_timer;
 extern struct sys_timer davinci_timer;
 
 extern void davinci_irq_init(void);
-extern void davinci_map_common_io(void);
 
 /* parameters describe VBUS sourcing for host mode */
 extern void setup_usb(unsigned mA, unsigned potpgt_msec);
@@ -25,4 +24,15 @@ extern void setup_usb(unsigned mA, unsigned potpgt_msec);
 /* parameters describe VBUS sourcing for host mode */
 extern void setup_usb(unsigned mA, unsigned potpgt_msec);
 
+/* SoC specific init support */
+struct davinci_soc_info {
+	struct map_desc			*io_desc;
+	unsigned long			io_desc_num;
+};
+
+extern struct davinci_soc_info davinci_soc_info;
+
+extern void davinci_common_init(struct davinci_soc_info *soc_info);
+extern void davinci_check_revision(void);
+
 #endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */
diff --git a/arch/arm/mach-davinci/include/mach/dm355.h b/arch/arm/mach-davinci/include/mach/dm355.h
index f7100b658992..54903b72438e 100644
--- a/arch/arm/mach-davinci/include/mach/dm355.h
+++ b/arch/arm/mach-davinci/include/mach/dm355.h
@@ -13,10 +13,9 @@
 
 #include <mach/hardware.h>
 
-void __init dm355_init(void);
-
 struct spi_board_info;
 
+void __init dm355_init(void);
 void dm355_init_spi0(unsigned chipselect_mask,
 		struct spi_board_info *info, unsigned len);
 
diff --git a/arch/arm/mach-davinci/io.c b/arch/arm/mach-davinci/io.c
index a548abb513e2..49912b48b1b0 100644
--- a/arch/arm/mach-davinci/io.c
+++ b/arch/arm/mach-davinci/io.c
@@ -9,47 +9,9 @@
  */
 
 #include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
 #include <linux/io.h>
 
 #include <asm/tlb.h>
-#include <asm/memory.h>
-
-#include <asm/mach/map.h>
-#include <mach/clock.h>
-
-extern void davinci_check_revision(void);
-
-/*
- * The machine specific code may provide the extra mapping besides the
- * default mapping provided here.
- */
-static struct map_desc davinci_io_desc[] __initdata = {
-	{
-		.virtual	= IO_VIRT,
-		.pfn		= __phys_to_pfn(IO_PHYS),
-		.length		= IO_SIZE,
-		.type		= MT_DEVICE
-	},
-};
-
-void __init davinci_map_common_io(void)
-{
-	iotable_init(davinci_io_desc, ARRAY_SIZE(davinci_io_desc));
-
-	/* Normally devicemaps_init() would flush caches and tlb after
-	 * mdesc->map_io(), but we must also do it here because of the CPU
-	 * revision check below.
-	 */
-	local_flush_tlb_all();
-	flush_cache_all();
-
-	/* We want to check CPU revision early for cpu_is_xxxx() macros.
-	 * IO space mapping must be initialized before we can do that.
-	 */
-	davinci_check_revision();
-}
 
 #define BETWEEN(p, st, sz)	((p) >= (st) && (p) < ((st) + (sz)))
 #define XLATE(p, pst, vst)	((void __iomem *)((p) - (pst) + (vst)))