diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h
index 073a2c5..058a808 100644
--- a/arch/arm/plat-omap/include/mach/clock.h
+++ b/arch/arm/plat-omap/include/mach/clock.h
@@ -22,7 +22,8 @@ struct clkops {
 	void			(*disable)(struct clk *);
 };
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+		defined(CONFIG_ARCH_OMAP4)
 
 struct clksel_rate {
 	u32			val;
@@ -51,7 +52,7 @@ struct dpll_data {
 	u8			max_divider;
 	u32			max_tolerance;
 	u16			max_multiplier;
-#  if defined(CONFIG_ARCH_OMAP3)
+#  if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
 	u8			modes;
 	void __iomem		*autoidle_reg;
 	void __iomem		*idlest_reg;
@@ -83,7 +84,8 @@ struct clk {
 	void			(*init)(struct clk *);
 	__u8			enable_bit;
 	__s8			usecount;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+		defined(CONFIG_ARCH_OMAP4)
 	u8			fixed_div;
 	void __iomem		*clksel_reg;
 	u32			clksel_mask;
diff --git a/arch/arm/plat-omap/include/mach/common.h b/arch/arm/plat-omap/include/mach/common.h
index 0ecf36d..4b18833 100644
--- a/arch/arm/plat-omap/include/mach/common.h
+++ b/arch/arm/plat-omap/include/mach/common.h
@@ -62,6 +62,7 @@ struct omap_globals {
 void omap2_set_globals_242x(void);
 void omap2_set_globals_243x(void);
 void omap2_set_globals_343x(void);
+void omap2_set_globals_443x(void);
 
 /* These get called from omap2_set_globals_xxxx(), do not call these */
 void omap2_set_globals_tap(struct omap_globals *);
diff --git a/arch/arm/plat-omap/include/mach/control.h b/arch/arm/plat-omap/include/mach/control.h
index 269147f..f45ec62 100644
--- a/arch/arm/plat-omap/include/mach/control.h
+++ b/arch/arm/plat-omap/include/mach/control.h
@@ -1,9 +1,9 @@
 /*
  * arch/arm/plat-omap/include/mach/control.h
  *
- * OMAP2/3 System Control Module definitions
+ * OMAP2/3/4 System Control Module definitions
  *
- * Copyright (C) 2007-2008 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009 Texas Instruments, Inc.
  * Copyright (C) 2007-2008 Nokia Corporation
  *
  * Written by Paul Walmsley
@@ -190,7 +190,8 @@
 #define OMAP2_PBIASLITEVMODE0		(1 << 0)
 
 #ifndef __ASSEMBLY__
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+		defined(CONFIG_ARCH_OMAP4)
 extern void __iomem *omap_ctrl_base_get(void);
 extern u8 omap_ctrl_readb(u16 offset);
 extern u16 omap_ctrl_readw(u16 offset);
diff --git a/arch/arm/plat-omap/include/mach/debug-macro.S b/arch/arm/plat-omap/include/mach/debug-macro.S
index 1b11f5c..ac24050 100644
--- a/arch/arm/plat-omap/include/mach/debug-macro.S
+++ b/arch/arm/plat-omap/include/mach/debug-macro.S
@@ -36,7 +36,7 @@
 		add	\rx, \rx, #0x00004000	@ UART 3
 #endif
 
-#elif	CONFIG_ARCH_OMAP3
+#elif defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
 		moveq	\rx, #0x48000000	@ physical base address
 		movne	\rx, #0xd8000000	@ virtual base
 		orr	\rx, \rx, #0x0006a000
diff --git a/arch/arm/plat-omap/include/mach/dma.h b/arch/arm/plat-omap/include/mach/dma.h
index 54fe966..8e05b6a 100644
--- a/arch/arm/plat-omap/include/mach/dma.h
+++ b/arch/arm/plat-omap/include/mach/dma.h
@@ -48,6 +48,7 @@
 /* Hardware registers for omap2 and omap3 */
 #define OMAP24XX_DMA4_BASE		(L4_24XX_BASE + 0x56000)
 #define OMAP34XX_DMA4_BASE		(L4_34XX_BASE + 0x56000)
+#define OMAP44XX_DMA4_BASE		(L4_44XX_BASE + 0x56000)
 
 #define OMAP_DMA4_REVISION		0x00
 #define OMAP_DMA4_GCR			0x78
diff --git a/arch/arm/plat-omap/include/mach/entry-macro.S b/arch/arm/plat-omap/include/mach/entry-macro.S
index 2276f89..62bcb1b 100644
--- a/arch/arm/plat-omap/include/mach/entry-macro.S
+++ b/arch/arm/plat-omap/include/mach/entry-macro.S
@@ -3,6 +3,9 @@
  *
  * Low-level IRQ helper macros for OMAP-based platforms
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>*
+ *
  * 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.
@@ -10,6 +13,7 @@
 #include <mach/hardware.h>
 #include <mach/io.h>
 #include <mach/irqs.h>
+#include <asm/hardware/gic.h>
 
 #if defined(CONFIG_ARCH_OMAP1)
 
@@ -56,7 +60,8 @@
 		.endm
 
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+			defined(CONFIG_ARCH_OMAP4)
 
 #if defined(CONFIG_ARCH_OMAP24XX)
 #include <mach/omap24xx.h>
@@ -64,7 +69,9 @@
 #if defined(CONFIG_ARCH_OMAP34XX)
 #include <mach/omap34xx.h>
 #endif
-
+#if defined(CONFIG_ARCH_OMAP4)
+#include <mach/omap44xx.h>
+#endif
 #define INTCPS_SIR_IRQ_OFFSET	0x0040		/* Active interrupt offset */
 #define	ACTIVEIRQ_MASK		0x7f		/* Active interrupt bits */
 
@@ -77,6 +84,7 @@
 		.macro  arch_ret_to_user, tmp1, tmp2
 		.endm
 
+#ifndef CONFIG_ARCH_OMAP4
 		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
 		ldr	\base, =OMAP2_VA_IC_BASE
 		ldr	\irqnr, [\base, #0x98] /* IRQ pending reg 1 */
@@ -92,6 +100,40 @@
 		and	\irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
 
 		.endm
+#else
+		/*
+		 * The interrupt numbering scheme is defined in the
+		 * interrupt controller spec.  To wit:
+		 *
+		 * Interrupts 0-15 are IPI
+		 * 16-28 are reserved
+		 * 29-31 are local.  We allow 30 to be used for the watchdog.
+		 * 32-1020 are global
+		 * 1021-1022 are reserved
+		 * 1023 is "spurious" (no interrupt)
+		 *
+		 * For now, we ignore all local interrupts so only return an
+		 * interrupt if it's between 30 and 1020.  The test_for_ipi
+		 * routine below will pick up on IPIs.
+		 * A simple read from the controller will tell us the number
+		 * of the highest priority enabled interrupt.
+		 * We then just need to check whether it is in the
+		 * valid range for an IRQ (30-1020 inclusive).
+		 */
+		.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr     \base, =OMAP44XX_VA_GIC_CPU_BASE
+		ldr     \irqstat, [\base, #GIC_CPU_INTACK]
+
+		ldr     \tmp, =1021
+
+		bic     \irqnr, \irqstat, #0x1c00
+
+		cmp     \irqnr, #29
+		cmpcc   \irqnr, \irqnr
+		cmpne   \irqnr, \tmp
+		cmpcs   \irqnr, \irqnr
+		.endm
+#endif
 
 		.macro	irq_prio_table
 		.endm
diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index 0610d7e..3b28147 100644
--- a/arch/arm/plat-omap/include/mach/io.h
+++ b/arch/arm/plat-omap/include/mach/io.h
@@ -6,6 +6,9 @@
  * Copied from arch/arm/mach-sa1100/include/mach/io.h
  * Copyright (C) 1997-1999 Russell King
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * 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
@@ -157,6 +160,40 @@
 #define DSP_MMU_34XX_VIRT	0xe2000000
 #define DSP_MMU_34XX_SIZE	SZ_4K
 
+
+#elif defined(CONFIG_ARCH_OMAP4)
+/* We map both L3 and L4 on OMAP4 */
+#define L3_44XX_PHYS		L3_44XX_BASE
+#define L3_44XX_VIRT		0xd4000000
+#define L3_44XX_SIZE		SZ_1M
+
+#define L4_44XX_PHYS		L4_44XX_BASE
+#define L4_44XX_VIRT		0xda000000
+#define L4_44XX_SIZE		SZ_4M
+
+
+#define L4_WK_44XX_PHYS		L4_WK_44XX_BASE
+#define L4_WK_44XX_VIRT		0xda300000
+#define L4_WK_44XX_SIZE		SZ_1M
+
+#define L4_PER_44XX_PHYS	L4_PER_44XX_BASE
+#define L4_PER_44XX_VIRT	0xd8000000
+#define L4_PER_44XX_SIZE	SZ_4M
+
+#define L4_EMU_44XX_PHYS	L4_EMU_44XX_BASE
+#define L4_EMU_44XX_VIRT	0xe4000000
+#define L4_EMU_44XX_SIZE	SZ_64M
+
+#define OMAP44XX_GPMC_PHYS	OMAP44XX_GPMC_BASE
+#define OMAP44XX_GPMC_VIRT	0xe0000000
+#define OMAP44XX_GPMC_SIZE	SZ_1M
+
+
+#define IO_OFFSET		0x90000000
+#define __IO_ADDRESS(pa)	((pa) + IO_OFFSET)/* Works for L3 and L4 */
+#define __OMAP2_IO_ADDRESS(pa)	((pa) + IO_OFFSET)/* Works for L3 and L4 */
+#define io_v2p(va)		((va) - IO_OFFSET)/* Works for L3 and L4 */
+
 #endif
 
 #define IO_ADDRESS(pa)		IOMEM(__IO_ADDRESS(pa))
diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
index 7f57ee6..5bc331e 100644
--- a/arch/arm/plat-omap/include/mach/irqs.h
+++ b/arch/arm/plat-omap/include/mach/irqs.h
@@ -4,6 +4,9 @@
  *  Copyright (C) Greg Lonnon 2001
  *  Updated for OMAP-1610 by Tony Lindgren <tony@atomide.com>
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * 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
@@ -422,6 +425,92 @@
 
 #define	INT_34XX_BENCH_MPU_EMUL	3
 
+
+#define IRQ_GIC_START		32
+
+#define INT_44XX_BENCH_MPU_EMUL	(3 + IRQ_GIC_START)
+#define INT_44XX_SSM_ABORT_IRQ	(6 + IRQ_GIC_START)
+#define INT_44XX_SYS_NIRQ	(7 + IRQ_GIC_START)
+#define INT_44XX_D2D_FW_IRQ	(8 + IRQ_GIC_START)
+#define INT_44XX_PRCM_MPU_IRQ	(11 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ0	(12 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ1	(13 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ2	(14 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ3	(15 + IRQ_GIC_START)
+#define INT_44XX_ISS_IRQ	(24 + IRQ_GIC_START)
+#define INT_44XX_DSS_IRQ	(25 + IRQ_GIC_START)
+#define INT_44XX_MAIL_U0_MPU	(26 + IRQ_GIC_START)
+#define INT_44XX_DSP_MMU	(28 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER1	(37 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER2	(38 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER3	(39 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER4	(40 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER5	(41 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER6	(42 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER7	(43 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER8	(44 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER9	(45 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER10	(46 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER11	(47 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER12	(95 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD5	(51 + IRQ_GIC_START)
+#define INT_44XX_I2C1_IRQ	(56 + IRQ_GIC_START)
+#define INT_44XX_I2C2_IRQ	(57 + IRQ_GIC_START)
+#define INT_44XX_HDQ_IRQ	(58 + IRQ_GIC_START)
+#define INT_44XX_SPI1_IRQ	(65 + IRQ_GIC_START)
+#define INT_44XX_SPI2_IRQ	(66 + IRQ_GIC_START)
+#define INT_44XX_HSI_1_IRQ0	(67 + IRQ_GIC_START)
+#define INT_44XX_HSI_2_IRQ1	(68 + IRQ_GIC_START)
+#define INT_44XX_HSI_1_DMAIRQ	(71 + IRQ_GIC_START)
+#define INT_44XX_UART1_IRQ	(72 + IRQ_GIC_START)
+#define INT_44XX_UART2_IRQ	(73 + IRQ_GIC_START)
+#define INT_44XX_UART3_IRQ	(74 + IRQ_GIC_START)
+#define INT_44XX_UART4_IRQ	(70 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_NISO	(76 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_ISO	(77 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_HGEN	(78 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_HSOF	(79 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_OTG	(80 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ_TX	(81 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ_RX	(82 + IRQ_GIC_START)
+#define INT_44XX_MMC_IRQ	(83 + IRQ_GIC_START)
+#define INT_44XX_MMC2_IRQ	(86 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ_TX	(89 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ_RX	(90 + IRQ_GIC_START)
+#define INT_44XX_SPI3_IRQ	(91 + IRQ_GIC_START)
+#define INT_44XX_SPI5_IRQ	(69 + IRQ_GIC_START)
+
+#define INT_44XX_MCBSP5_IRQ	(16 + IRQ_GIC_START)
+#define INT_44xX_MCBSP1_IRQ	(17 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ	(22 + IRQ_GIC_START)
+#define INT_44XX_MCBSP3_IRQ	(23 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ	(27 + IRQ_GIC_START)
+#define INT_44XX_HS_USB_MC	(92 + IRQ_GIC_START)
+#define INT_44XX_HS_USB_DMA	(93 + IRQ_GIC_START)
+
+#define INT_44XX_GPIO_BANK1	(29 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK2	(30 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK3	(31 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK4	(32 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK5	(33 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK6	(34 + IRQ_GIC_START)
+#define INT_44XX_USIM_IRQ	(35 + IRQ_GIC_START)
+#define INT_44XX_WDT3_IRQ	(36 + IRQ_GIC_START)
+#define INT_44XX_SPI4_IRQ	(48 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD52_IRQ	(49 + IRQ_GIC_START)
+#define INT_44XX_FPKA_READY_IRQ	(50 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD51_IRQ	(51 + IRQ_GIC_START)
+#define INT_44XX_RNG_IRQ	(52 + IRQ_GIC_START)
+#define INT_44XX_I2C3_IRQ	(61 + IRQ_GIC_START)
+#define INT_44XX_FPKA_ERROR_IRQ	(64 + IRQ_GIC_START)
+#define INT_44XX_PBIAS_IRQ	(75 + IRQ_GIC_START)
+#define INT_44XX_OHCI_IRQ	(76 + IRQ_GIC_START)
+#define INT_44XX_EHCI_IRQ	(77 + IRQ_GIC_START)
+#define INT_44XX_TLL_IRQ	(78 + IRQ_GIC_START)
+#define INT_44XX_PARTHASH_IRQ	(79 + IRQ_GIC_START)
+#define INT_44XX_MMC3_IRQ	(94 + IRQ_GIC_START)
+
+
 /* Max. 128 level 2 IRQs (OMAP1610), 192 GPIOs (OMAP730/850) and
  * 16 MPUIO lines */
 #define OMAP_MAX_GPIO_LINES	192
diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h
index 99ed564..9ad41dc 100644
--- a/arch/arm/plat-omap/include/mach/memory.h
+++ b/arch/arm/plat-omap/include/mach/memory.h
@@ -38,7 +38,8 @@
  */
 #if defined(CONFIG_ARCH_OMAP1)
 #define PHYS_OFFSET		UL(0x10000000)
-#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+			defined(CONFIG_ARCH_OMAP4)
 #define PHYS_OFFSET		UL(0x80000000)
 #endif
 
diff --git a/arch/arm/plat-omap/include/mach/serial.h b/arch/arm/plat-omap/include/mach/serial.h
index 8a676a0..e37894e 100644
--- a/arch/arm/plat-omap/include/mach/serial.h
+++ b/arch/arm/plat-omap/include/mach/serial.h
@@ -1,5 +1,8 @@
 /*
- *  arch/arm/plat-omap/include/mach/serial.h
+ * arch/arm/plat-omap/include/mach/serial.h
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Addded OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,19 +18,28 @@
 #define OMAP_UART1_BASE		0xfffb0000
 #define OMAP_UART2_BASE		0xfffb0800
 #define OMAP_UART3_BASE		0xfffb9800
+#define OMAP_MAX_NR_PORTS	3
 #elif defined(CONFIG_ARCH_OMAP2)
 /* OMAP2 serial ports */
 #define OMAP_UART1_BASE		0x4806a000
 #define OMAP_UART2_BASE		0x4806c000
 #define OMAP_UART3_BASE		0x4806e000
+#define OMAP_MAX_NR_PORTS	3
 #elif defined(CONFIG_ARCH_OMAP3)
 /* OMAP3 serial ports */
 #define OMAP_UART1_BASE		0x4806a000
 #define OMAP_UART2_BASE		0x4806c000
 #define OMAP_UART3_BASE		0x49020000
+#define OMAP_MAX_NR_PORTS	3
+#elif defined(CONFIG_ARCH_OMAP4)
+/* OMAP4 serial ports */
+#define OMAP_UART1_BASE		0x4806a000
+#define OMAP_UART2_BASE		0x4806c000
+#define OMAP_UART3_BASE		0x48020000
+#define OMAP_UART4_BASE		0x4806e000
+#define OMAP_MAX_NR_PORTS	4
 #endif
 
-#define OMAP_MAX_NR_PORTS	3
 #define OMAP1510_BASE_BAUD	(12000000/16)
 #define OMAP16XX_BASE_BAUD	(48000000/16)
 #define OMAP24XX_BASE_BAUD	(48000000/16)
