21 files changed, 523 insertions, 57 deletions

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 70b68ef83201..66738c3854c3 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -2,6 +2,10 @@
  * linux/arch/arm/plat-omap/common.c
  *
  * Code common to all OMAP machines.
+ * The file is created 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 version 2 as
@@ -217,6 +221,15 @@ static cycle_t omap34xx_32k_read(struct clocksource *cs)
 #define omap34xx_32k_read       NULL
 #endif
 
+#ifdef CONFIG_ARCH_OMAP4
+static cycle_t omap44xx_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap44xx_32k_read       NULL
+#endif
+
 /*
  * Kernel assumes that sched_clock can be called early but may not have
  * things ready yet.
@@ -264,6 +277,8 @@ static int __init omap_init_clocksource_32k(void)
                         clocksource_32k.read = omap2430_32k_read;
                 else if (cpu_is_omap34xx())
                         clocksource_32k.read = omap34xx_32k_read;
+                else if (cpu_is_omap44xx())
+                        clocksource_32k.read = omap44xx_32k_read;
                 else
                         return -ENODEV;
 
@@ -351,3 +366,19 @@ void __init omap2_set_globals_343x(void)
 }
 #endif
 
+#if defined(CONFIG_ARCH_OMAP4)
+static struct omap_globals omap4_globals = {
+        .class  = OMAP443X_CLASS,
+        .tap    = OMAP2_IO_ADDRESS(0x4830a000),
+        .ctrl   = OMAP2_IO_ADDRESS(OMAP443X_CTRL_BASE),
+        .prm    = OMAP2_IO_ADDRESS(OMAP4430_PRM_BASE),
+        .cm     = OMAP2_IO_ADDRESS(OMAP4430_CM_BASE),
+};
+
+void __init omap2_set_globals_443x(void)
+{
+        omap2_set_globals_tap(&omap4_globals);
+        omap2_set_globals_control(&omap4_globals);
+}
+#endif
+
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index 87fb7ff41794..a64b692a1bfe 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -311,6 +311,8 @@ static void omap_init_wdt(void)
                 wdt_resources[0].start = 0x49016000; /* WDT2 */
         else if (cpu_is_omap343x())
                 wdt_resources[0].start = 0x48314000; /* WDT2 */
+        else if (cpu_is_omap44xx())
+                wdt_resources[0].start = 0x4a314000;
         else
                 return;
 
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 06e9cbe8b8eb..def14ec265b3 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -10,6 +10,9 @@
  * Merged to support both OMAP1 and OMAP2 by Tony Lindgren <tony@atomide.com>
  * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc.
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * Support functions for the OMAP internal DMA channels.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -872,7 +875,7 @@ omap_dma_set_prio_lch(int lch, unsigned char read_prio,
         }
         l = dma_read(CCR(lch));
         l &= ~((1 << 6) | (1 << 26));
-        if (cpu_is_omap2430() || cpu_is_omap34xx())
+        if (cpu_is_omap2430() || cpu_is_omap34xx() ||  cpu_is_omap44xx())
                 l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
         else
                 l |= ((read_prio & 0x1) << 6);
@@ -1844,7 +1847,8 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
 #define omap1_dma_irq_handler   NULL
 #endif
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
 
 static int omap2_dma_handle_ch(int ch)
 {
@@ -2339,6 +2343,9 @@ static int __init omap_init_dma(void)
         } else if (cpu_is_omap34xx()) {
                 omap_dma_base = IO_ADDRESS(OMAP34XX_DMA4_BASE);
                 dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
+        } else if (cpu_is_omap44xx()) {
+                omap_dma_base = IO_ADDRESS(OMAP44XX_DMA4_BASE);
+                dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
         } else {
                 pr_err("DMA init failed for unsupported omap\n");
                 return -ENODEV;
@@ -2437,12 +2444,18 @@ static int __init omap_init_dma(void)
                 }
         }
 
-        if (cpu_is_omap2430() || cpu_is_omap34xx())
+        if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx())
                 omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE,
                                 DMA_DEFAULT_FIFO_DEPTH, 0);
 
-        if (cpu_class_is_omap2())
-                setup_irq(INT_24XX_SDMA_IRQ0, &omap24xx_dma_irq);
+        if (cpu_class_is_omap2()) {
+                int irq;
+                if (cpu_is_omap44xx())
+                        irq = INT_44XX_SDMA_IRQ0;
+                else
+                        irq = INT_24XX_SDMA_IRQ0;
+                setup_irq(irq, &omap24xx_dma_irq);
+        }
 
         /* FIXME: Update LCD DMA to work on 24xx */
         if (cpu_class_is_omap1()) {
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index ee206122f507..7f50b6103dee 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -7,6 +7,9 @@
  * OMAP2 support by Juha Yrjola
  * API improvements and OMAP2 clock framework support by Timo Teras
  *
+ * 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
@@ -150,7 +153,8 @@
 struct omap_dm_timer {
         unsigned long phys_base;
         int irq;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
         struct clk *iclk, *fclk;
 #endif
         void __iomem *io_base;
@@ -169,6 +173,9 @@ struct omap_dm_timer {
 #define omap3_dm_timers                 NULL
 #define omap3_dm_source_names           NULL
 #define omap3_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap1_dm_timers[] = {
         { .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 },
@@ -191,6 +198,9 @@ static const int dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
 #define omap3_dm_timers                 NULL
 #define omap3_dm_source_names           NULL
 #define omap3_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap2_dm_timers[] = {
         { .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 },
@@ -225,6 +235,9 @@ static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
 #define omap2_dm_timers                 NULL
 #define omap2_dm_source_names           NULL
 #define omap2_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap3_dm_timers[] = {
         { .phys_base = 0x48318000, .irq = INT_24XX_GPTIMER1 },
@@ -250,6 +263,40 @@ static const char *omap3_dm_source_names[] __initdata = {
 static struct clk *omap3_dm_source_clocks[2];
 static const int dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
 
+#elif defined(CONFIG_ARCH_OMAP4)
+
+#define omap_dm_clk_enable(x)           clk_enable(x)
+#define omap_dm_clk_disable(x)          clk_disable(x)
+#define omap1_dm_timers                 NULL
+#define omap2_dm_timers                 NULL
+#define omap2_dm_source_names           NULL
+#define omap2_dm_source_clocks          NULL
+#define omap3_dm_timers                 NULL
+#define omap3_dm_source_names           NULL
+#define omap3_dm_source_clocks          NULL
+
+static struct omap_dm_timer omap4_dm_timers[] = {
+        { .phys_base = 0x4a318000, .irq = INT_44XX_GPTIMER1 },
+        { .phys_base = 0x48032000, .irq = INT_44XX_GPTIMER2 },
+        { .phys_base = 0x48034000, .irq = INT_44XX_GPTIMER3 },
+        { .phys_base = 0x48036000, .irq = INT_44XX_GPTIMER4 },
+        { .phys_base = 0x40138000, .irq = INT_44XX_GPTIMER5 },
+        { .phys_base = 0x4013a000, .irq = INT_44XX_GPTIMER6 },
+        { .phys_base = 0x4013a000, .irq = INT_44XX_GPTIMER7 },
+        { .phys_base = 0x4013e000, .irq = INT_44XX_GPTIMER8 },
+        { .phys_base = 0x4803e000, .irq = INT_44XX_GPTIMER9 },
+        { .phys_base = 0x48086000, .irq = INT_44XX_GPTIMER10 },
+        { .phys_base = 0x48088000, .irq = INT_44XX_GPTIMER11 },
+        { .phys_base = 0x4a320000, .irq = INT_44XX_GPTIMER12 },
+};
+static const char *omap4_dm_source_names[] __initdata = {
+        "sys_ck",
+        "omap_32k_fck",
+        NULL
+};
+static struct clk *omap4_dm_source_clocks[2];
+static const int dm_timer_count = ARRAY_SIZE(omap4_dm_timers);
+
 #else
 
 #error OMAP architecture not supported!
@@ -459,7 +506,8 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
 }
 EXPORT_SYMBOL_GPL(omap_dm_timer_modify_idlect_mask);
 
-#elif defined(CONFIG_ARCH_OMAP2) || defined (CONFIG_ARCH_OMAP3)
+#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                                defined(CONFIG_ARCH_OMAP4)
 
 struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
 {
@@ -711,6 +759,10 @@ int __init omap_dm_timer_init(void)
                 dm_timers = omap3_dm_timers;
                 dm_source_names = omap3_dm_source_names;
                 dm_source_clocks = omap3_dm_source_clocks;
+        } else if (cpu_is_omap44xx()) {
+                dm_timers = omap4_dm_timers;
+                dm_source_names = omap4_dm_source_names;
+                dm_source_clocks = omap4_dm_source_clocks;
         }
 
         if (cpu_class_is_omap2())
@@ -723,7 +775,8 @@ int __init omap_dm_timer_init(void)
         for (i = 0; i < dm_timer_count; i++) {
                 timer = &dm_timers[i];
                 timer->io_base = IO_ADDRESS(timer->phys_base);
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                                        defined(CONFIG_ARCH_OMAP4)
                 if (cpu_class_is_omap2()) {
                         char clk_name[16];
                         sprintf(clk_name, "gpt%d_ick", i + 1);
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index ee0b21f5b094..7fd89ba8d3b5 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -6,6 +6,9 @@
  * Copyright (C) 2003-2005 Nokia Corporation
  * Written by Juha Yrjölä <juha.yrjola@nokia.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 version 2 as
  * published by the Free Software Foundation.
@@ -146,6 +149,16 @@
 #define OMAP34XX_GPIO5_BASE             IO_ADDRESS(0x49056000)
 #define OMAP34XX_GPIO6_BASE             IO_ADDRESS(0x49058000)
 
+/*
+ * OMAP44XX  specific GPIO registers
+ */
+#define OMAP44XX_GPIO1_BASE             IO_ADDRESS(0x4a310000)
+#define OMAP44XX_GPIO2_BASE             IO_ADDRESS(0x48055000)
+#define OMAP44XX_GPIO3_BASE             IO_ADDRESS(0x48057000)
+#define OMAP44XX_GPIO4_BASE             IO_ADDRESS(0x48059000)
+#define OMAP44XX_GPIO5_BASE             IO_ADDRESS(0x4805B000)
+#define OMAP44XX_GPIO6_BASE             IO_ADDRESS(0x4805D000)
+
 #define OMAP_MPUIO_VBASE                IO_ADDRESS(OMAP_MPUIO_BASE)
 
 struct gpio_bank {
@@ -153,11 +166,13 @@ struct gpio_bank {
         u16 irq;
         u16 virtual_irq_start;
         int method;
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) ||  \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
         u32 suspend_wakeup;
         u32 saved_wakeup;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         u32 non_wakeup_gpios;
         u32 enabled_non_wakeup_gpios;
 
@@ -251,6 +266,24 @@ static struct gpio_bank gpio_bank_34xx[6] = {
 
 #endif
 
+#ifdef CONFIG_ARCH_OMAP4
+static struct gpio_bank gpio_bank_44xx[6] = {
+        { OMAP44XX_GPIO1_BASE, INT_44XX_GPIO_BANK1, IH_GPIO_BASE,       \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO2_BASE, INT_44XX_GPIO_BANK2, IH_GPIO_BASE + 32,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO3_BASE, INT_44XX_GPIO_BANK3, IH_GPIO_BASE + 64,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO4_BASE, INT_44XX_GPIO_BANK4, IH_GPIO_BASE + 96,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO5_BASE, INT_44XX_GPIO_BANK5, IH_GPIO_BASE + 128, \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO6_BASE, INT_44XX_GPIO_BANK6, IH_GPIO_BASE + 160, \
+                METHOD_GPIO_24XX },
+};
+
+#endif
+
 static struct gpio_bank *gpio_bank;
 static int gpio_bank_count;
 
@@ -273,7 +306,7 @@ static inline struct gpio_bank *get_gpio_bank(int gpio)
         }
         if (cpu_is_omap24xx())
                 return &gpio_bank[gpio >> 5];
-        if (cpu_is_omap34xx())
+        if (cpu_is_omap34xx() || cpu_is_omap44xx())
                 return &gpio_bank[gpio >> 5];
         BUG();
         return NULL;
@@ -285,7 +318,7 @@ static inline int get_gpio_index(int gpio)
                 return gpio & 0x1f;
         if (cpu_is_omap24xx())
                 return gpio & 0x1f;
-        if (cpu_is_omap34xx())
+        if (cpu_is_omap34xx() || cpu_is_omap44xx())
                 return gpio & 0x1f;
         return gpio & 0x0f;
 }
@@ -307,7 +340,7 @@ static inline int gpio_valid(int gpio)
                 return 0;
         if (cpu_is_omap24xx() && gpio < 128)
                 return 0;
-        if (cpu_is_omap34xx() && gpio < 192)
+        if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio < 192)
                 return 0;
         return -1;
 }
@@ -353,7 +386,8 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
                 reg += OMAP850_GPIO_DIR_CONTROL;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_OE;
                 break;
@@ -425,7 +459,8 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
                         l &= ~(1 << gpio);
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (enable)
                         reg += OMAP24XX_GPIO_SETDATAOUT;
@@ -476,7 +511,8 @@ static int __omap_get_gpio_datain(int gpio)
                 reg += OMAP850_GPIO_DATA_INPUT;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_DATAIN;
                 break;
@@ -520,7 +556,7 @@ void omap_set_gpio_debounce(int gpio, int enable)
         else
                 goto done;
 
-        if (cpu_is_omap34xx()) {
+        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                 if (enable)
                         clk_enable(bank->dbck);
                 else
@@ -550,7 +586,8 @@ void omap_set_gpio_debounce_time(int gpio, int enc_time)
 }
 EXPORT_SYMBOL(omap_set_gpio_debounce_time);
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
 static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio,
                                                 int trigger)
 {
@@ -660,7 +697,8 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
                         goto bad;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 set_24xx_gpio_triggering(bank, gpio, trigger);
                 break;
@@ -745,7 +783,8 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
                 reg += OMAP850_GPIO_INT_STATUS;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_IRQSTATUS1;
                 break;
@@ -814,7 +853,8 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
                 inv = 1;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_IRQENABLE1;
                 mask = 0xffffffff;
@@ -887,7 +927,8 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab
                         l |= gpio_mask;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (enable)
                         reg += OMAP24XX_GPIO_SETIRQENABLE1;
@@ -932,7 +973,8 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
                 spin_unlock_irqrestore(&bank->lock, flags);
                 return 0;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (bank->non_wakeup_gpios & (1 << gpio)) {
                         printk(KERN_ERR "Unable to modify wakeup on "
@@ -1017,7 +1059,8 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
                 __raw_writel(1 << offset, reg);
         }
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         if (bank->method == METHOD_GPIO_24XX) {
                 /* Disable wake-up during idle for dynamic tick */
                 void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1069,7 +1112,8 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
         if (bank->method == METHOD_GPIO_850)
                 isr_reg = bank->base + OMAP850_GPIO_INT_STATUS;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         if (bank->method == METHOD_GPIO_24XX)
                 isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
 #endif
@@ -1346,7 +1390,7 @@ static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
 /*---------------------------------------------------------------------*/
 
 static int initialized;
-#if !defined(CONFIG_ARCH_OMAP3)
+#if !(defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4))
 static struct clk * gpio_ick;
 #endif
 
@@ -1359,7 +1403,7 @@ static struct clk * gpio5_ick;
 static struct clk * gpio5_fck;
 #endif
 
-#if defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
 static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
 #endif
 
@@ -1419,8 +1463,8 @@ static int __init _omap_gpio_init(void)
         }
 #endif
 
-#if defined(CONFIG_ARCH_OMAP3)
-        if (cpu_is_omap34xx()) {
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
+        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                 for (i = 0; i < OMAP34XX_NR_GPIOS; i++) {
                         sprintf(clk_name, "gpio%d_ick", i + 1);
                         gpio_iclks[i] = clk_get(NULL, clk_name);
@@ -1497,6 +1541,17 @@ static int __init _omap_gpio_init(void)
                         (rev >> 4) & 0x0f, rev & 0x0f);
         }
 #endif
+#ifdef CONFIG_ARCH_OMAP4
+        if (cpu_is_omap44xx()) {
+                int rev;
+
+                gpio_bank_count = OMAP34XX_NR_GPIOS;
+                gpio_bank = gpio_bank_44xx;
+                rev = __raw_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION);
+                printk(KERN_INFO "OMAP44xx GPIO hardware version %d.%d\n",
+                        (rev >> 4) & 0x0f, rev & 0x0f);
+        }
+#endif
         for (i = 0; i < gpio_bank_count; i++) {
                 int j, gpio_count = 16;
 
@@ -1520,7 +1575,8 @@ static int __init _omap_gpio_init(void)
                         gpio_count = 32; /* 730 has 32-bit GPIOs */
                 }
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 if (bank->method == METHOD_GPIO_24XX) {
                         static const u32 non_wakeup_gpios[] = {
                                 0xe203ffc0, 0x08700040
@@ -1577,7 +1633,7 @@ static int __init _omap_gpio_init(void)
                 set_irq_chained_handler(bank->irq, gpio_irq_handler);
                 set_irq_data(bank->irq, bank);
 
-                if (cpu_is_omap34xx()) {
+                if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                         sprintf(clk_name, "gpio%d_dbck", i + 1);
                         bank->dbck = clk_get(NULL, clk_name);
                         if (IS_ERR(bank->dbck))
@@ -1599,7 +1655,8 @@ static int __init _omap_gpio_init(void)
         return 0;
 }
 
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
 static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
 {
         int i;
@@ -1622,7 +1679,8 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
                         wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
                         break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 case METHOD_GPIO_24XX:
                         wake_status = bank->base + OMAP24XX_GPIO_WAKE_EN;
                         wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1663,7 +1721,8 @@ static int omap_gpio_resume(struct sys_device *dev)
                         wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
                         break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 case METHOD_GPIO_24XX:
                         wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
                         wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
@@ -1695,7 +1754,8 @@ static struct sys_device omap_gpio_device = {
 
 #endif
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
 
 static int workaround_enabled;
 
@@ -1711,7 +1771,8 @@ void omap2_gpio_prepare_for_retention(void)
 
                 if (!(bank->enabled_non_wakeup_gpios))
                         continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 bank->saved_datain = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
                 l1 = __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 l2 = __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT);
@@ -1720,7 +1781,8 @@ void omap2_gpio_prepare_for_retention(void)
                 bank->saved_risingdetect = l2;
                 l1 &= ~bank->enabled_non_wakeup_gpios;
                 l2 &= ~bank->enabled_non_wakeup_gpios;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 __raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 __raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT);
 #endif
@@ -1745,7 +1807,8 @@ void omap2_gpio_resume_after_retention(void)
 
                 if (!(bank->enabled_non_wakeup_gpios))
                         continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 __raw_writel(bank->saved_fallingdetect,
                                  bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 __raw_writel(bank->saved_risingdetect,
@@ -1755,14 +1818,16 @@ void omap2_gpio_resume_after_retention(void)
                  * state.  If so, generate an IRQ by software.  This is
                  * horribly racy, but it's the best we can do to work around
                  * this silicon bug. */
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
 #endif
                 l ^= bank->saved_datain;
                 l &= bank->non_wakeup_gpios;
                 if (l) {
                         u32 old0, old1;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                         old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
                         old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
                         __raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
@@ -1798,7 +1863,8 @@ static int __init omap_gpio_sysinit(void)
 
         mpuio_init();
 
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
         if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
                 if (ret == 0) {
                         ret = sysdev_class_register(&omap_gpio_sysclass);
@@ -1887,7 +1953,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
 
                         irqstat = irq_desc[irq].status;
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) ||   \
-                defined(CONFIG_ARCH_OMAP34XX)
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
                         if (is_in && ((bank->suspend_wakeup & mask)
                                         || irqstat & IRQ_TYPE_SENSE_MASK)) {
                                 char    *trigger = NULL;
diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h
index 073a2c5569f0..c20e02ec3034 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 0ecf36deb17b..4b188334c666 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 269147f3836f..f45ec621da96 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/cpu.h b/arch/arm/plat-omap/include/mach/cpu.h
index 98b144252364..fc60c4ebcc28 100644
--- a/arch/arm/plat-omap/include/mach/cpu.h
+++ b/arch/arm/plat-omap/include/mach/cpu.h
@@ -5,8 +5,12 @@
  *
  * Copyright (C) 2004, 2008 Nokia Corporation
  *
+ * Copyright (C) 2009 Texas Instruments.
+ *
  * Written by Tony Lindgren <tony.lindgren@nokia.com>
  *
+ * Added OMAP4 specific defines - 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
@@ -155,6 +159,8 @@ IS_OMAP_SUBCLASS(343x, 0x343)
 #define cpu_is_omap243x()               0
 #define cpu_is_omap34xx()               0
 #define cpu_is_omap343x()               0
+#define cpu_is_omap44xx()               0
+#define cpu_is_omap443x()               0
 
 #if defined(MULTI_OMAP1)
 # if defined(CONFIG_ARCH_OMAP730)
@@ -348,12 +354,21 @@ IS_OMAP_TYPE(3430, 0x3430)
 # define cpu_is_omap3430()              is_omap3430()
 #endif
 
+# if defined(CONFIG_ARCH_OMAP4)
+# undef cpu_is_omap44xx
+# undef cpu_is_omap443x
+# define cpu_is_omap44xx()              1
+# define cpu_is_omap443x()              1
+# endif
+
 /* Macros to detect if we have OMAP1 or OMAP2 */
 #define cpu_class_is_omap1()    (cpu_is_omap7xx() || cpu_is_omap15xx() || \
                                 cpu_is_omap16xx())
-#define cpu_class_is_omap2()    (cpu_is_omap24xx() || cpu_is_omap34xx())
+#define cpu_class_is_omap2()    (cpu_is_omap24xx() || cpu_is_omap34xx() || \
+                                cpu_is_omap44xx())
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
 
 /* Various silicon revisions for omap2 */
 #define OMAP242X_CLASS          0x24200024
@@ -370,6 +385,8 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define OMAP3430_REV_ES3_0      0x34303034
 #define OMAP3430_REV_ES3_1      0x34304034
 
+#define OMAP443X_CLASS          0x44300034
+
 /*
  * omap_chip bits
  *
diff --git a/arch/arm/plat-omap/include/mach/debug-macro.S b/arch/arm/plat-omap/include/mach/debug-macro.S
index 1b11f5c6a2d9..ac24050e3416 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 19df76f97ab3..8c1eae88737e 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 33256a0e9a28..00f45c01390d 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)
 
 #include <mach/omap24xx.h>
 #include <mach/omap34xx.h>
@@ -67,7 +72,9 @@
 #elif defined(CONFIG_ARCH_OMAP34XX)
 #define OMAP2_VA_IC_BASE                IO_ADDRESS(OMAP34XX_IC_BASE)
 #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 */
 
@@ -80,6 +87,7 @@
                 .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 */
@@ -95,6 +103,40 @@
                 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/hardware.h b/arch/arm/plat-omap/include/mach/hardware.h
index 3dc423ed3e80..26c1fbff08aa 100644
--- a/arch/arm/plat-omap/include/mach/hardware.h
+++ b/arch/arm/plat-omap/include/mach/hardware.h
@@ -285,5 +285,6 @@
 #include "omap16xx.h"
 #include "omap24xx.h"
 #include "omap34xx.h"
+#include "omap44xx.h"
 
 #endif  /* __ASM_ARCH_OMAP_HARDWARE_H */
diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index 0610d7e2b3d7..3b2814720569 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 7f57ee66f364..5bc331e93cf2 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 99ed564d9277..9ad41dc484c1 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/omap44xx.h b/arch/arm/plat-omap/include/mach/omap44xx.h
new file mode 100644
index 000000000000..15dec7f1c7c0
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap44xx.h
@@ -0,0 +1,46 @@
+/*:
+ * Address mappings and base address for OMAP4 interconnects
+ * and peripherals.
+ *
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * Author: 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARCH_OMAP44XX_H
+#define __ASM_ARCH_OMAP44XX_H
+
+/*
+ * Please place only base defines here and put the rest in device
+ * specific headers.
+ */
+#define L4_44XX_BASE                    0x4a000000
+#define L4_WK_44XX_BASE                 0x4a300000
+#define L4_PER_44XX_BASE                0x48000000
+#define L4_EMU_44XX_BASE                0x54000000
+#define L3_44XX_BASE                    0x44000000
+#define OMAP4430_32KSYNCT_BASE          0x4a304000
+#define OMAP4430_CM_BASE                0x4a004000
+#define OMAP4430_PRM_BASE               0x48306000
+#define OMAP44XX_GPMC_BASE              0x50000000
+#define OMAP443X_SCM_BASE               0x4a002000
+#define OMAP443X_CTRL_BASE              OMAP443X_SCM_BASE
+#define OMAP44XX_IC_BASE                0x48200000
+#define OMAP44XX_IVA_INTC_BASE          0x40000000
+#define IRQ_SIR_IRQ                     0x0040
+#define OMAP44XX_GIC_DIST_BASE          0x48241000
+#define OMAP44XX_GIC_CPU_BASE           0x48240100
+#define OMAP44XX_VA_GIC_CPU_BASE        IO_ADDRESS(OMAP44XX_GIC_CPU_BASE)
+#define OMAP44XX_SCU_BASE               0x48240000
+#define OMAP44XX_VA_SCU_BASE            IO_ADDRESS(OMAP44XX_SCU_BASE)
+#define OMAP44XX_LOCAL_TWD_BASE         0x48240600
+#define OMAP44XX_VA_LOCAL_TWD_BASE      IO_ADDRESS(OMAP44XX_LOCAL_TWD_BASE)
+#define OMAP44XX_LOCAL_TWD_SIZE         0x00000100
+#define OMAP44XX_WKUPGEN_BASE           0x48281000
+#define OMAP44XX_VA_WKUPGEN_BASE        IO_ADDRESS(OMAP44XX_WKUPGEN_BASE)
+
+#endif /* __ASM_ARCH_OMAP44XX_H */
+
diff --git a/arch/arm/plat-omap/include/mach/serial.h b/arch/arm/plat-omap/include/mach/serial.h
index 8a676a04be48..e37894e423bd 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)
diff --git a/arch/arm/plat-omap/io.c b/arch/arm/plat-omap/io.c
index af326efc1ad3..9b42d72d96cf 100644
--- a/arch/arm/plat-omap/io.c
+++ b/arch/arm/plat-omap/io.c
@@ -1,3 +1,14 @@
+/*
+ * Common io.c file
+ * This file is created by Russell King <rmk+kernel@arm.linux.org.uk>
+ *
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ */
 #include <linux/module.h>
 #include <linux/io.h>
 #include <linux/mm.h>
@@ -7,6 +18,7 @@
 #include <mach/omap16xx.h>
 #include <mach/omap24xx.h>
 #include <mach/omap34xx.h>
+#include <mach/omap44xx.h>
 
 #define BETWEEN(p,st,sz)        ((p) >= (st) && (p) < ((st) + (sz)))
 #define XLATE(p,pst,vst)        ((void __iomem *)((p) - (pst) + (vst)))
@@ -92,7 +104,22 @@ void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
                         return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
         }
 #endif
-
+#ifdef CONFIG_ARCH_OMAP4
+        if (cpu_is_omap44xx()) {
+                if (BETWEEN(p, L3_44XX_PHYS, L3_44XX_SIZE))
+                        return XLATE(p, L3_44XX_PHYS, L3_44XX_VIRT);
+                if (BETWEEN(p, L4_44XX_PHYS, L4_44XX_SIZE))
+                        return XLATE(p, L4_44XX_PHYS, L4_44XX_VIRT);
+                if (BETWEEN(p, L4_WK_44XX_PHYS, L4_WK_44XX_SIZE))
+                        return XLATE(p, L4_WK_44XX_PHYS, L4_WK_44XX_VIRT);
+                if (BETWEEN(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_SIZE))
+                        return XLATE(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_VIRT);
+                if (BETWEEN(p, L4_PER_44XX_PHYS, L4_PER_44XX_SIZE))
+                        return XLATE(p, L4_PER_44XX_PHYS, L4_PER_44XX_VIRT);
+                if (BETWEEN(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_SIZE))
+                        return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
+        }
+#endif
         return __arm_ioremap(p, size, type);
 }
 EXPORT_SYMBOL(omap_ioremap);
diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c
index 80b040fd5ca7..8d329fb20740 100644
--- a/arch/arm/plat-omap/mux.c
+++ b/arch/arm/plat-omap/mux.c
@@ -54,6 +54,9 @@ int __init_or_module omap_cfg_reg(const unsigned long index)
 {
         struct pin_config *reg;
 
+        if (cpu_is_omap44xx())
+                return 0;
+
         if (mux_cfg == NULL) {
                 printk(KERN_ERR "Pin mux table not initialized\n");
                 return -ENODEV;
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 102c9f71a3c1..67a90708b682 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -6,6 +6,9 @@
  * Copyright (C) 2005 Nokia Corporation
  * Written 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 version 2 as
  * published by the Free Software Foundation.
@@ -44,6 +47,8 @@
 #define OMAP3_SRAM_VA           0xd7000000
 #define OMAP3_SRAM_PUB_PA       0x40208000
 #define OMAP3_SRAM_PUB_VA       0xd7008000
+#define OMAP4_SRAM_PA           0x40200000              /*0x402f0000*/
+#define OMAP4_SRAM_VA           0xd7000000              /*0xd70f0000*/
 
 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 #define SRAM_BOOTLOADER_SZ      0x00
@@ -87,6 +92,10 @@ static int is_sram_locked(void)
 {
         int type = 0;
 
+        if (cpu_is_omap44xx())
+                /* Not yet supported */
+                return 0;
+
         if (cpu_is_omap242x())
                 type = omap_rev() & OMAP2_DEVICETYPE_MASK;
 
@@ -135,6 +144,10 @@ void __init omap_detect_sram(void)
                                 omap_sram_base = OMAP3_SRAM_VA;
                                 omap_sram_start = OMAP3_SRAM_PA;
                                 omap_sram_size = 0x10000; /* 64K */
+                        } else if (cpu_is_omap44xx()) {
+                                omap_sram_base = OMAP4_SRAM_VA;
+                                omap_sram_start = OMAP4_SRAM_PA;
+                                omap_sram_size = 0x8000; /* 32K */
                         } else {
                                 omap_sram_base = OMAP2_SRAM_VA;
                                 omap_sram_start = OMAP2_SRAM_PA;
@@ -203,6 +216,12 @@ void __init omap_map_sram(void)
                 omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
         }
 
+        if (cpu_is_omap44xx()) {
+                omap_sram_io_desc[0].virtual = OMAP4_SRAM_VA;
+                base = OMAP4_SRAM_PA;
+                base = ROUND_DOWN(base, PAGE_SIZE);
+                omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+        }
         omap_sram_io_desc[0].length = 1024 * 1024;      /* Use section desc */
         iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
 
@@ -391,6 +410,8 @@ int __init omap_sram_init(void)
                 omap243x_sram_init();
         else if (cpu_is_omap34xx())
                 omap34xx_sram_init();
+        else if (cpu_is_omap44xx())
+                omap34xx_sram_init(); /* FIXME: */
 
         return 0;
 }