[ARM] 3145/1: OMAP 3a/5: Add support for omap24xx

Patch from Tony Lindgren

This patch adds support for omap24xx series of processors.
The files live in arch/arm/mach-omap2, and share common
files with omap15xx and omap16xx processors in
arch/arm/plat-omap.

Omap24xx support was originally added for 2.6.9 by TI.
This code was then improved and integrated to share common
code with omap15xx and omap16xx processors by various
omap developers, such as Paul Mundt, Juha Yrjola, Imre Deak,
Tony Lindgren, Richard Woodruff, Nishant Menon, Komal Shah
et al.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -239,6 +239,8 @@ source "arch/arm/plat-omap/Kconfig"
 
 source "arch/arm/mach-omap1/Kconfig"
 
+source "arch/arm/mach-omap2/Kconfig"
+
 source "arch/arm/mach-s3c2410/Kconfig"
 
 source "arch/arm/mach-lh7a40x/Kconfig"

arch/arm/Makefile

@@ -93,6 +93,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
  machine-$(CONFIG_ARCH_IXP4XX)	   := ixp4xx
  machine-$(CONFIG_ARCH_IXP2000)    := ixp2000
  machine-$(CONFIG_ARCH_OMAP1)	   := omap1
+ machine-$(CONFIG_ARCH_OMAP2)	   := omap2
   incdir-$(CONFIG_ARCH_OMAP)	   := omap
  machine-$(CONFIG_ARCH_S3C2410)	   := s3c2410
  machine-$(CONFIG_ARCH_LH7A40X)	   := lh7a40x

arch/arm/mach-omap2/Kconfig

+comment "OMAP Core Type"
+	depends on ARCH_OMAP2
+
+config ARCH_OMAP24XX
+	bool "OMAP24xx Based System"
+	depends on ARCH_OMAP2
+
+config ARCH_OMAP2420
+	bool "OMAP2420 support"
+	depends on ARCH_OMAP24XX
+
+comment "OMAP Board Type"
+	depends on ARCH_OMAP2
+
+config MACH_OMAP_GENERIC
+	bool "Generic OMAP board"
+	depends on ARCH_OMAP2 && ARCH_OMAP24XX
+
+config MACH_OMAP_H4
+	bool "OMAP 2420 H4 board"
+	depends on ARCH_OMAP2 && ARCH_OMAP24XX
+

arch/arm/mach-omap2/Makefile

+#
+# Makefile for the linux kernel.
+#
+
+# Common support
+obj-y := irq.o id.o io.o sram-fn.o clock.o mux.o devices.o serial.o
+
+obj-$(CONFIG_OMAP_MPU_TIMER)		+= timer-gp.o
+
+# Specific board support
+obj-$(CONFIG_MACH_OMAP_GENERIC)		+= board-generic.o
+obj-$(CONFIG_MACH_OMAP_H4)		+= board-h4.o
+

arch/arm/mach-omap2/Makefile.boot

+  zreladdr-y		:= 0x80008000
+params_phys-y		:= 0x80000100
+initrd_phys-y		:= 0x80800000

arch/arm/mach-omap2/board-generic.c

+/*
+ * linux/arch/arm/mach-omap/omap2/board-generic.c
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Paul Mundt <paul.mundt@nokia.com>
+ *
+ * Modified from mach-omap/omap1/board-generic.c
+ *
+ * Code for generic OMAP2 board. Should work on many OMAP2 systems where
+ * the bootloader passes the board-specific data to the kernel.
+ * Do not put any board specific code to this file; create a new machine
+ * type if you need custom low-level initializations.
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/usb.h>
+#include <asm/arch/board.h>
+#include <asm/arch/common.h>
+
+static void __init omap_generic_init_irq(void)
+{
+	omap_init_irq();
+}
+
+static struct omap_uart_config generic_uart_config __initdata = {
+	.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
+};
+
+static struct omap_mmc_config generic_mmc_config __initdata = {
+	.mmc [0] = {
+		.enabled 	= 0,
+		.wire4		= 0,
+		.wp_pin		= -1,
+		.power_pin	= -1,
+		.switch_pin	= -1,
+	},
+};
+
+static struct omap_board_config_kernel generic_config[] = {
+	{ OMAP_TAG_UART,	&generic_uart_config },
+	{ OMAP_TAG_MMC,		&generic_mmc_config },
+};
+
+static void __init omap_generic_init(void)
+{
+	omap_board_config = generic_config;
+	omap_board_config_size = ARRAY_SIZE(generic_config);
+	omap_serial_init();
+}
+
+static void __init omap_generic_map_io(void)
+{
+	omap_map_common_io();
+}
+
+MACHINE_START(OMAP_GENERIC, "Generic OMAP24xx")
+	/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
+	.phys_ram	= 0x80000000,
+	.phys_io	= 0x48000000,
+	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
+	.boot_params	= 0x80000100,
+	.map_io		= omap_generic_map_io,
+	.init_irq	= omap_generic_init_irq,
+	.init_machine	= omap_generic_init,
+	.timer		= &omap_timer,
+MACHINE_END

arch/arm/mach-omap2/board-h4.c

+/*
+ * linux/arch/arm/mach-omap/omap2/board-h4.c
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Paul Mundt <paul.mundt@nokia.com>
+ *
+ * Modified from mach-omap/omap1/board-generic.c
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/delay.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/usb.h>
+#include <asm/arch/board.h>
+#include <asm/arch/common.h>
+#include <asm/arch/prcm.h>
+
+#include <asm/io.h>
+#include <asm/delay.h>
+
+static struct mtd_partition h4_partitions[] = {
+	/* bootloader (U-Boot, etc) in first sector */
+	{
+	      .name		= "bootloader",
+	      .offset		= 0,
+	      .size		= SZ_128K,
+	      .mask_flags	= MTD_WRITEABLE, /* force read-only */
+	},
+	/* bootloader params in the next sector */
+	{
+	      .name		= "params",
+	      .offset		= MTDPART_OFS_APPEND,
+	      .size		= SZ_128K,
+	      .mask_flags	= 0,
+	},
+	/* kernel */
+	{
+	      .name		= "kernel",
+	      .offset		= MTDPART_OFS_APPEND,
+	      .size		= SZ_2M,
+	      .mask_flags	= 0
+	},
+	/* file system */
+	{
+	      .name		= "filesystem",
+	      .offset		= MTDPART_OFS_APPEND,
+	      .size		= MTDPART_SIZ_FULL,
+	      .mask_flags	= 0
+	}
+};
+
+static struct flash_platform_data h4_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+	.parts		= h4_partitions,
+	.nr_parts	= ARRAY_SIZE(h4_partitions),
+};
+
+static struct resource h4_flash_resource = {
+	.start		= H4_CS0_BASE,
+	.end		= H4_CS0_BASE + SZ_64M - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device h4_flash_device = {
+	.name		= "omapflash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &h4_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &h4_flash_resource,
+};
+
+static struct resource h4_smc91x_resources[] = {
+	[0] = {
+		.start  = OMAP24XX_ETHR_START,          /* Physical */
+		.end    = OMAP24XX_ETHR_START + 0xf,
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
+		.end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device h4_smc91x_device = {
+	.name		= "smc91x",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(h4_smc91x_resources),
+	.resource	= h4_smc91x_resources,
+};
+
+static struct platform_device *h4_devices[] __initdata = {
+	&h4_smc91x_device,
+	&h4_flash_device,
+};
+
+static inline void __init h4_init_smc91x(void)
+{
+	/* Make sure CS1 timings are correct */
+	GPMC_CONFIG1_1 = 0x00011200;
+	GPMC_CONFIG2_1 = 0x001f1f01;
+	GPMC_CONFIG3_1 = 0x00080803;
+	GPMC_CONFIG4_1 = 0x1c091c09;
+	GPMC_CONFIG5_1 = 0x041f1f1f;
+	GPMC_CONFIG6_1 = 0x000004c4;
+	GPMC_CONFIG7_1 = 0x00000f40 | (0x08000000 >> 24);
+	udelay(100);
+
+	omap_cfg_reg(M15_24XX_GPIO92);
+	if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
+		printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
+			OMAP24XX_ETHR_GPIO_IRQ);
+		return;
+	}
+	omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
+}
+
+static void __init omap_h4_init_irq(void)
+{
+	omap_init_irq();
+	omap_gpio_init();
+	h4_init_smc91x();
+}
+
+static struct omap_uart_config h4_uart_config __initdata = {
+	.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
+};
+
+static struct omap_mmc_config h4_mmc_config __initdata = {
+	.mmc [0] = {
+		.enabled	= 1,
+		.wire4		= 1,
+		.wp_pin		= -1,
+		.power_pin	= -1,
+		.switch_pin	= -1,
+	},
+};
+
+static struct omap_lcd_config h4_lcd_config __initdata = {
+	.panel_name	= "h4",
+	.ctrl_name	= "internal",
+};
+
+static struct omap_board_config_kernel h4_config[] = {
+	{ OMAP_TAG_UART,	&h4_uart_config },
+	{ OMAP_TAG_MMC,		&h4_mmc_config },
+	{ OMAP_TAG_LCD,		&h4_lcd_config },
+};
+
+static void __init omap_h4_init(void)
+{
+	/*
+	 * Make sure the serial ports are muxed on at this point.
+	 * You have to mux them off in device drivers later on
+	 * if not needed.
+	 */
+	platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
+	omap_board_config = h4_config;
+	omap_board_config_size = ARRAY_SIZE(h4_config);
+	omap_serial_init();
+}
+
+static void __init omap_h4_map_io(void)
+{
+	omap_map_common_io();
+}
+
+MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
+	/* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
+	.phys_ram	= 0x80000000,
+	.phys_io	= 0x48000000,
+	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
+	.boot_params	= 0x80000100,
+	.map_io		= omap_h4_map_io,
+	.init_irq	= omap_h4_init_irq,
+	.init_machine	= omap_h4_init,
+	.timer		= &omap_timer,
+MACHINE_END

arch/arm/mach-omap2/devices.c

+/*
+ * linux/arch/arm/mach-omap2/devices.c
+ *
+ * OMAP2 platform device setup/initialization
+ *
+ * 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 option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/tc.h>
+#include <asm/arch/board.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/gpio.h>
+
+extern void omap_nop_release(struct device *dev);
+
+/*-------------------------------------------------------------------------*/
+
+#if 	defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
+
+#define OMAP2_I2C_BASE2		0x48072000
+#define OMAP2_I2C_INT2		57
+
+static struct resource i2c_resources2[] = {
+	{
+		.start		= OMAP2_I2C_BASE2,
+		.end		= OMAP2_I2C_BASE2 + 0x3f,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= OMAP2_I2C_INT2,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device omap_i2c_device2 = {
+        .name           = "i2c_omap",
+        .id             = 2,
+        .dev = {
+                .release        = omap_nop_release,
+        },
+	.num_resources	= ARRAY_SIZE(i2c_resources2),
+	.resource	= i2c_resources2,
+};
+
+/* See also arch/arm/plat-omap/devices.c for first I2C on 24xx */
+static void omap_init_i2c(void)
+{
+	/* REVISIT: Second I2C not in use on H4? */
+	if (machine_is_omap_h4())
+		return;
+
+	omap_cfg_reg(J15_24XX_I2C2_SCL);
+	omap_cfg_reg(H19_24XX_I2C2_SDA);
+	(void) platform_device_register(&omap_i2c_device2);
+}
+
+#else
+
+static void omap_init_i2c(void) {}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static int __init omap2_init_devices(void)
+{
+	/* please keep these calls, and their implementations above,
+	 * in alphabetical order so they're easier to sort through.
+	 */
+	omap_init_i2c();
+
+	return 0;
+}
+arch_initcall(omap2_init_devices);
+

arch/arm/mach-omap2/id.c

+/*
+ * linux/arch/arm/mach-omap2/id.c
+ *
+ * OMAP2 CPU identification code
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Written by Tony Lindgren <tony@atomide.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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+
+#define OMAP24XX_TAP_BASE	io_p2v(0x48014000)
+
+#define OMAP_TAP_IDCODE		0x0204
+#define OMAP_TAP_PROD_ID	0x0208
+
+#define OMAP_TAP_DIE_ID_0	0x0218
+#define OMAP_TAP_DIE_ID_1	0x021C
+#define OMAP_TAP_DIE_ID_2	0x0220
+#define OMAP_TAP_DIE_ID_3	0x0224
+
+/* system_rev fields for OMAP2 processors:
+ *   CPU id bits     [31:16],
+ *   CPU device type [15:12], (unprg,normal,POP)
+ *   CPU revision    [11:08]
+ *   CPU class bits  [07:00]
+ */
+
+struct omap_id {
+	u16	hawkeye;	/* Silicon type (Hawkeye id) */
+	u8	dev;		/* Device type from production_id reg */
+	u32	type;		/* combined type id copied to system_rev */
+};
+
+/* Register values to detect the OMAP version */
+static struct omap_id omap_ids[] __initdata = {
+	{ .hawkeye = 0xb5d9, .dev = 0x0, .type = 0x24200000 },
+	{ .hawkeye = 0xb5d9, .dev = 0x1, .type = 0x24201000 },
+	{ .hawkeye = 0xb5d9, .dev = 0x2, .type = 0x24202000 },
+	{ .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220000 },
+	{ .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230000 },
+	{ .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300000 },
+};
+
+static u32 __init read_tap_reg(int reg)
+{
+	return __raw_readl(OMAP24XX_TAP_BASE + reg);
+}
+
+void __init omap2_check_revision(void)
+{
+	int i, j;
+	u32 idcode;
+	u32 prod_id;
+	u16 hawkeye;
+	u8  dev_type;
+	u8  rev;
+
+	idcode = read_tap_reg(OMAP_TAP_IDCODE);
+	prod_id = read_tap_reg(OMAP_TAP_PROD_ID);
+	hawkeye = (idcode >> 12) & 0xffff;
+	rev = (idcode >> 28) & 0x0f;
+	dev_type = (prod_id >> 16) & 0x0f;
+
+#ifdef DEBUG
+	printk(KERN_DEBUG "OMAP_TAP_IDCODE 0x%08x REV %i HAWKEYE 0x%04x MANF %03x\n",
+		idcode, rev, hawkeye, (idcode >> 1) & 0x7ff);
+	printk(KERN_DEBUG "OMAP_TAP_DIE_ID_0: 0x%08x\n",
+		read_tap_reg(OMAP_TAP_DIE_ID_0));
+	printk(KERN_DEBUG "OMAP_TAP_DIE_ID_1: 0x%08x DEV_REV: %i\n",
+		read_tap_reg(OMAP_TAP_DIE_ID_1),
+	       (read_tap_reg(OMAP_TAP_DIE_ID_1) >> 28) & 0xf);
+	printk(KERN_DEBUG "OMAP_TAP_DIE_ID_2: 0x%08x\n",
+		read_tap_reg(OMAP_TAP_DIE_ID_2));
+	printk(KERN_DEBUG "OMAP_TAP_DIE_ID_3: 0x%08x\n",
+		read_tap_reg(OMAP_TAP_DIE_ID_3));
+	printk(KERN_DEBUG "OMAP_TAP_PROD_ID_0: 0x%08x DEV_TYPE: %i\n",
+		prod_id, dev_type);
+#endif
+
+	/* Check hawkeye ids */
+	for (i = 0; i < ARRAY_SIZE(omap_ids); i++) {
+		if (hawkeye == omap_ids[i].hawkeye)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(omap_ids)) {
+		printk(KERN_ERR "Unknown OMAP CPU id\n");
+		return;
+	}
+
+	for (j = i; j < ARRAY_SIZE(omap_ids); j++) {
+		if (dev_type == omap_ids[j].dev)
+			break;
+	}
+
+	if (j == ARRAY_SIZE(omap_ids)) {
+		printk(KERN_ERR "Unknown OMAP device type. "
+				"Handling it as OMAP%04x\n",
+				omap_ids[i].type >> 16);
+		j = i;
+	}
+	system_rev = omap_ids[j].type;
+
+	system_rev |= rev << 8;
+
+	/* Add the cpu class info (24xx) */
+	system_rev |= 0x24;
+
+	pr_info("OMAP%04x", system_rev >> 16);
+	if ((system_rev >> 8) & 0x0f)
+		printk("%x", (system_rev >> 8) & 0x0f);
+	printk("\n");
+}
+

arch/arm/mach-omap2/io.c

+/*
+ * linux/arch/arm/mach-omap2/io.c
+ *
+ * OMAP2 I/O mapping code
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Juha Yrjl <juha.yrjola@nokia.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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/mach/map.h>
+#include <asm/io.h>
+#include <asm/arch/mux.h>
+
+extern void omap_sram_init(void);
+extern int omap2_clk_init(void);
+extern void omap2_check_revision(void);
+
+/*
+ * The machine specific code may provide the extra mapping besides the
+ * default mapping provided here.
+ */
+static struct map_desc omap2_io_desc[] __initdata = {
+	{
+		.virtual	= L3_24XX_VIRT,
+		.pfn		= __phys_to_pfn(L3_24XX_PHYS),
+		.length		= L3_24XX_SIZE,
+		.type		= MT_DEVICE
+	},
+	{
+		.virtual	= L4_24XX_VIRT,
+		.pfn		= __phys_to_pfn(L4_24XX_PHYS),
+		.length		= L4_24XX_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+
+void __init omap_map_common_io(void)
+{
+	iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
+	omap2_check_revision();
+	omap_sram_init();
+	omap2_mux_init();
+	omap2_clk_init();
+}

arch/arm/mach-omap2/irq.c

+/*
+ * linux/arch/arm/mach-omap/omap2/irq.c
+ *
+ * Interrupt handler for OMAP2 boards.
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Paul Mundt <paul.mundt@nokia.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/config.h>
+#include <linux/interrupt.h>
+#include <asm/hardware.h>
+#include <asm/mach/irq.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#define INTC_REVISION	0x0000
+#define INTC_SYSCONFIG	0x0010
+#define INTC_SYSSTATUS	0x0014
+#define INTC_CONTROL	0x0048
+#define INTC_MIR_CLEAR0	0x0088
+#define INTC_MIR_SET0	0x008c
+
+/*
+ * OMAP2 has a number of different interrupt controllers, each interrupt
+ * controller is identified as its own "bank". Register definitions are
+ * fairly consistent for each bank, but not all registers are implemented
+ * for each bank.. when in doubt, consult the TRM.
+ */
+static struct omap_irq_bank {
+	unsigned long base_reg;
+	unsigned int nr_irqs;
+} __attribute__ ((aligned(4))) irq_banks[] = {
+	{
+		/* MPU INTC */
+		.base_reg	= OMAP24XX_IC_BASE,
+		.nr_irqs	= 96,
+	}, {
+		/* XXX: DSP INTC */
+
+#if 0
+	/*
+	 * Commented out for now until we fix the IVA clocking
+	 */
+#ifdef CONFIG_ARCH_OMAP2420
+	}, {
+		/* IVA INTC (2420 only) */
+		.base_reg	= OMAP24XX_IVA_INTC_BASE,
+		.nr_irqs	= 16,	/* Actually 32, but only 16 are used */
+#endif
+#endif
+	}
+};
+
+/* XXX: FIQ and additional INTC support (only MPU at the moment) */
+static void omap_ack_irq(unsigned int irq)
+{
+	omap_writel(0x1, irq_banks[0].base_reg + INTC_CONTROL);
+}
+
+static void omap_mask_irq(unsigned int irq)
+{
+	int offset = (irq >> 5) << 5;
+
+	if (irq >= 64) {
+		irq %= 64;
+	} else if (irq >= 32) {
+		irq %= 32;
+	}
+
+	omap_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_SET0 + offset);
+}
+
+static void omap_unmask_irq(unsigned int irq)
+{
+	int offset = (irq >> 5) << 5;
+
+	if (irq >= 64) {
+		irq %= 64;
+	} else if (irq >= 32) {
+		irq %= 32;
+	}
+
+	omap_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_CLEAR0 + offset);
+}
+
+static void omap_mask_ack_irq(unsigned int irq)
+{
+	omap_mask_irq(irq);
+	omap_ack_irq(irq);
+}
+
+static struct irqchip omap_irq_chip = {
+	.ack	= omap_mask_ack_irq,
+	.mask	= omap_mask_irq,
+	.unmask	= omap_unmask_irq,
+};
+
+static void __init omap_irq_bank_init_one(struct omap_irq_bank *bank)
+{
+	unsigned long tmp;
+
+	tmp = omap_readl(bank->base_reg + INTC_REVISION) & 0xff;
+	printk(KERN_INFO "IRQ: Found an INTC at 0x%08lx "
+			 "(revision %ld.%ld) with %d interrupts\n",
+			 bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs);
+
+	tmp = omap_readl(bank->base_reg + INTC_SYSCONFIG);
+	tmp |= 1 << 1;	/* soft reset */
+	omap_writel(tmp, bank->base_reg + INTC_SYSCONFIG);
+
+	while (!(omap_readl(bank->base_reg + INTC_SYSSTATUS) & 0x1))
+		/* Wait for reset to complete */;
+}
+
+void __init omap_init_irq(void)
+{
+	unsigned long nr_irqs = 0;
+	unsigned int nr_banks = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
+		struct omap_irq_bank *bank = irq_banks + i;
+
+		/* XXX */
+		if (!bank->base_reg)
+			continue;
+
+		omap_irq_bank_init_one(bank);
+
+		nr_irqs += bank->nr_irqs;
+		nr_banks++;
+	}
+
+	printk(KERN_INFO "Total of %ld interrupts on %d active controller%s\n",
+	       nr_irqs, nr_banks, nr_banks > 1 ? "s" : "");
+
+	for (i = 0; i < nr_irqs; i++) {
+		set_irq_chip(i, &omap_irq_chip);
+		set_irq_handler(i, do_level_IRQ);
+		set_irq_flags(i, IRQF_VALID);
+	}
+}
+

arch/arm/mach-omap2/mux.c

+/*
+ * linux/arch/arm/mach-omap2/mux.c
+ *
+ * OMAP1 pin multiplexing configurations
+ *
+ * Copyright (C) 2003 - 2005 Nokia Corporation
+ *
+ * Written by Tony Lindgren <tony.lindgren@nokia.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 option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <linux/spinlock.h>
+
+#include <asm/arch/mux.h>
+
+#ifdef CONFIG_OMAP_MUX
+
+/* NOTE: See mux.h for the enumeration */
+
+struct pin_config __initdata_or_module omap24xx_pins[] = {
+/*
+ *	description			mux	mux	pull	pull	debug
+ *					offset	mode	ena	type
+ */
+
+/* 24xx I2C */
+MUX_CFG_24XX("M19_24XX_I2C1_SCL",	0x111,	0,	0,	0,	1)
+MUX_CFG_24XX("L15_24XX_I2C1_SDA",	0x112,	0,	0,	0,	1)
+MUX_CFG_24XX("J15_24XX_I2C2_SCL",	0x113,	0,	0,	0,	1)
+MUX_CFG_24XX("H19_24XX_I2C2_SDA",	0x114,	0,	0,	0,	1)
+
+/* Menelaus interrupt */
+MUX_CFG_24XX("W19_24XX_SYS_NIRQ",	0x12c,	0,	1,	1,	1)
+
+/* 24xx GPIO */
+MUX_CFG_24XX("Y20_24XX_GPIO60",		0x12c,	3,	0,	0,	1)
+MUX_CFG_24XX("M15_24XX_GPIO92",		0x10a,	3,	0,	0,	1)
+
+};
+
+int __init omap2_mux_init(void)
+{
+	omap_mux_register(omap24xx_pins, ARRAY_SIZE(omap24xx_pins));
+	return 0;
+}
+
+#endif

arch/arm/mach-omap2/prcm.h

+/*
+ * prcm.h - Access definations for use in OMAP24XX clock and power management
+ *
+ * Copyright (C) 2005 Texas Instruments, Inc.
+ *
+ * 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 option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARM_ARCH_DPM_PRCM_H
+#define __ASM_ARM_ARCH_DPM_PRCM_H
+
+/* SET_PERFORMANCE_LEVEL PARAMETERS */
+#define PRCM_HALF_SPEED 1
+#define PRCM_FULL_SPEED 2
+
+#ifndef __ASSEMBLER__
+
+#define PRCM_REG32(offset)	__REG32(OMAP24XX_PRCM_BASE + (offset))
+
+#define PRCM_REVISION		PRCM_REG32(0x000)
+#define PRCM_SYSCONFIG		PRCM_REG32(0x010)
+#define PRCM_IRQSTATUS_MPU	PRCM_REG32(0x018)
+#define PRCM_IRQENABLE_MPU	PRCM_REG32(0x01C)
+#define PRCM_VOLTCTRL		PRCM_REG32(0x050)
+#define PRCM_VOLTST		PRCM_REG32(0x054)
+#define PRCM_CLKSRC_CTRL	PRCM_REG32(0x060)
+#define PRCM_CLKOUT_CTRL	PRCM_REG32(0x070)
+#define PRCM_CLKEMUL_CTRL	PRCM_REG32(0x078)
+#define PRCM_CLKCFG_CTRL	PRCM_REG32(0x080)
+#define PRCM_CLKCFG_STATUS	PRCM_REG32(0x084)
+#define PRCM_VOLTSETUP		PRCM_REG32(0x090)
+#define PRCM_CLKSSETUP		PRCM_REG32(0x094)
+#define PRCM_POLCTRL		PRCM_REG32(0x098)
+
+/* GENERAL PURPOSE */
+#define GENERAL_PURPOSE1	PRCM_REG32(0x0B0)
+#define GENERAL_PURPOSE2	PRCM_REG32(0x0B4)
+#define GENERAL_PURPOSE3	PRCM_REG32(0x0B8)
+#define GENERAL_PURPOSE4	PRCM_REG32(0x0BC)
+#define GENERAL_PURPOSE5	PRCM_REG32(0x0C0)
+#define GENERAL_PURPOSE6	PRCM_REG32(0x0C4)
+#define GENERAL_PURPOSE7	PRCM_REG32(0x0C8)
+#define GENERAL_PURPOSE8	PRCM_REG32(0x0CC)
+#define GENERAL_PURPOSE9	PRCM_REG32(0x0D0)
+#define GENERAL_PURPOSE10	PRCM_REG32(0x0D4)
+#define GENERAL_PURPOSE11	PRCM_REG32(0x0D8)
+#define GENERAL_PURPOSE12	PRCM_REG32(0x0DC)
+#define GENERAL_PURPOSE13	PRCM_REG32(0x0E0)
+#define GENERAL_PURPOSE14	PRCM_REG32(0x0E4)
+#define GENERAL_PURPOSE15	PRCM_REG32(0x0E8)
+#define GENERAL_PURPOSE16	PRCM_REG32(0x0EC)
+#define GENERAL_PURPOSE17	PRCM_REG32(0x0F0)
+#define GENERAL_PURPOSE18	PRCM_REG32(0x0F4)
+#define GENERAL_PURPOSE19	PRCM_REG32(0x0F8)
+#define GENERAL_PURPOSE20	PRCM_REG32(0x0FC)
+
+/* MPU */
+#define CM_CLKSEL_MPU		PRCM_REG32(0x140)
+#define CM_CLKSTCTRL_MPU	PRCM_REG32(0x148)
+#define RM_RSTST_MPU		PRCM_REG32(0x158)
+#define PM_WKDEP_MPU		PRCM_REG32(0x1C8)
+#define PM_EVGENCTRL_MPU	PRCM_REG32(0x1D4)
+#define PM_EVEGENONTIM_MPU	PRCM_REG32(0x1D8)
+#define PM_EVEGENOFFTIM_MPU	PRCM_REG32(0x1DC)
+#define PM_PWSTCTRL_MPU		PRCM_REG32(0x1E0)
+#define PM_PWSTST_MPU		PRCM_REG32(0x1E4)
+
+/* CORE */
+#define CM_FCLKEN1_CORE		PRCM_REG32(0x200)
+#define CM_FCLKEN2_CORE		PRCM_REG32(0x204)
+#define CM_FCLKEN3_CORE		PRCM_REG32(0x208)
+#define CM_ICLKEN1_CORE		PRCM_REG32(0x210)
+#define CM_ICLKEN2_CORE		PRCM_REG32(0x214)
+#define CM_ICLKEN3_CORE		PRCM_REG32(0x218)
+#define CM_ICLKEN4_CORE		PRCM_REG32(0x21C)
+#define CM_IDLEST1_CORE		PRCM_REG32(0x220)
+#define CM_IDLEST2_CORE		PRCM_REG32(0x224)
+#define CM_IDLEST3_CORE		PRCM_REG32(0x228)
+#define CM_IDLEST4_CORE		PRCM_REG32(0x22C)
+#define CM_AUTOIDLE1_CORE	PRCM_REG32(0x230)
+#define CM_AUTOIDLE2_CORE	PRCM_REG32(0x234)
+#define CM_AUTOIDLE3_CORE	PRCM_REG32(0x238)
+#define CM_AUTOIDLE4_CORE	PRCM_REG32(0x23C)
+#define CM_CLKSEL1_CORE		PRCM_REG32(0x240)
+#define CM_CLKSEL2_CORE		PRCM_REG32(0x244)
+#define CM_CLKSTCTRL_CORE	PRCM_REG32(0x248)
+#define PM_WKEN1_CORE		PRCM_REG32(0x2A0)
+#define PM_WKEN2_CORE		PRCM_REG32(0x2A4)
+#define PM_WKST1_CORE		PRCM_REG32(0x2B0)
+#define PM_WKST2_CORE		PRCM_REG32(0x2B4)
+#define PM_WKDEP_CORE		PRCM_REG32(0x2C8)
+#define PM_PWSTCTRL_CORE	PRCM_REG32(0x2E0)
+#define PM_PWSTST_CORE		PRCM_REG32(0x2E4)
+
+/* GFX */
+#define CM_FCLKEN_GFX		PRCM_REG32(0x300)
+#define CM_ICLKEN_GFX		PRCM_REG32(0x310)
+#define CM_IDLEST_GFX		PRCM_REG32(0x320)
+#define CM_CLKSEL_GFX		PRCM_REG32(0x340)
+#define CM_CLKSTCTRL_GFX	PRCM_REG32(0x348)
+#define RM_RSTCTRL_GFX		PRCM_REG32(0x350)
+#define RM_RSTST_GFX		PRCM_REG32(0x358)
+#define PM_WKDEP_GFX		PRCM_REG32(0x3C8)
+#define PM_PWSTCTRL_GFX		PRCM_REG32(0x3E0)
+#define PM_PWSTST_GFX		PRCM_REG32(0x3E4)
+
+/* WAKE-UP */
+#define CM_FCLKEN_WKUP		PRCM_REG32(0x400)
+#define CM_ICLKEN_WKUP		PRCM_REG32(0x410)
+#define CM_IDLEST_WKUP		PRCM_REG32(0x420)
+#define CM_AUTOIDLE_WKUP	PRCM_REG32(0x430)
+#define CM_CLKSEL_WKUP		PRCM_REG32(0x440)
+#define RM_RSTCTRL_WKUP		PRCM_REG32(0x450)
+#define RM_RSTTIME_WKUP		PRCM_REG32(0x454)
+#define RM_RSTST_WKUP		PRCM_REG32(0x458)
+#define PM_WKEN_WKUP		PRCM_REG32(0x4A0)
+#define PM_WKST_WKUP		PRCM_REG32(0x4B0)
+
+/* CLOCKS */
+#define CM_CLKEN_PLL		PRCM_REG32(0x500)
+#define CM_IDLEST_CKGEN		PRCM_REG32(0x520)
+#define CM_AUTOIDLE_PLL		PRCM_REG32(0x530)
+#define CM_CLKSEL1_PLL		PRCM_REG32(0x540)
+#define CM_CLKSEL2_PLL		PRCM_REG32(0x544)
+
+/* DSP */
+#define CM_FCLKEN_DSP		PRCM_REG32(0x800)
+#define CM_ICLKEN_DSP		PRCM_REG32(0x810)
+#define CM_IDLEST_DSP		PRCM_REG32(0x820)
+#define CM_AUTOIDLE_DSP		PRCM_REG32(0x830)
+#define CM_CLKSEL_DSP		PRCM_REG32(0x840)
+#define CM_CLKSTCTRL_DSP	PRCM_REG32(0x848)
+#define RM_RSTCTRL_DSP		PRCM_REG32(0x850)
+#define RM_RSTST_DSP		PRCM_REG32(0x858)
+#define PM_WKEN_DSP		PRCM_REG32(0x8A0)
+#define PM_WKDEP_DSP		PRCM_REG32(0x8C8)
+#define PM_PWSTCTRL_DSP		PRCM_REG32(0x8E0)
+#define PM_PWSTST_DSP		PRCM_REG32(0x8E4)
+#define PRCM_IRQSTATUS_DSP	PRCM_REG32(0x8F0)
+#define PRCM_IRQENABLE_DSP	PRCM_REG32(0x8F4)
+
+/* IVA */
+#define PRCM_IRQSTATUS_IVA	PRCM_REG32(0x8F8)
+#define PRCM_IRQENABLE_IVA	PRCM_REG32(0x8FC)
+
+/* Modem on 2430 */
+#define CM_FCLKEN_MDM		PRCM_REG32(0xC00)
+#define CM_ICLKEN_MDM		PRCM_REG32(0xC10)
+#define CM_IDLEST_MDM		PRCM_REG32(0xC20)
+#define CM_CLKSEL_MDM		PRCM_REG32(0xC40)
+
+/* FIXME: Move to header for 2430 */
+#define DISP_BASE		(OMAP24XX_L4_IO_BASE+0x50000)
+#define DISP_REG32(offset)	__REG32(DISP_BASE + (offset))
+
+#define GPMC_BASE		(OMAP24XX_GPMC_BASE)
+#define GPMC_REG32(offset)	__REG32(GPMC_BASE + (offset))
+
+#define GPT1_BASE		(OMAP24XX_GPT1)
+#define GPT1_REG32(offset)	__REG32(GPT1_BASE + (offset))
+
+/* Misc sysconfig */
+#define DISPC_SYSCONFIG		DISP_REG32(0x410)
+#define SPI_BASE		(OMAP24XX_L4_IO_BASE+0x98000)
+#define MCSPI1_SYSCONFIG	__REG32(SPI_BASE + 0x10)
+#define MCSPI2_SYSCONFIG	__REG32(SPI_BASE+0x2000 + 0x10)
+
+//#define DSP_MMU_SYSCONFIG	0x5A000010
+#define CAMERA_MMU_SYSCONFIG	__REG32(DISP_BASE+0x2C10)
+//#define IVA_MMU_SYSCONFIG	0x5D000010
+//#define DSP_DMA_SYSCONFIG	0x00FCC02C
+#define CAMERA_DMA_SYSCONFIG	__REG32(DISP_BASE+0x282C)
+#define SYSTEM_DMA_SYSCONFIG	__REG32(DISP_BASE+0x602C)
+#define GPMC_SYSCONFIG		GPMC_REG32(0x010)
+#define MAILBOXES_SYSCONFIG	__REG32(OMAP24XX_L4_IO_BASE+0x94010)
+#define UART1_SYSCONFIG		__REG32(OMAP24XX_L4_IO_BASE+0x6A054)
+#define UART2_SYSCONFIG		__REG32(OMAP24XX_L4_IO_BASE+0x6C054)
+#define UART3_SYSCONFIG		__REG32(OMAP24XX_L4_IO_BASE+0x6E054)
+//#define IVA_SYSCONFIG		0x5C060010
+#define SDRC_SYSCONFIG		__REG32(OMAP24XX_SDRC_BASE+0x10)
+#define SMS_SYSCONFIG		__REG32(OMAP24XX_SMS_BASE+0x10)
+#define SSI_SYSCONFIG		__REG32(DISP_BASE+0x8010)
+//#define VLYNQ_SYSCONFIG	0x67FFFE10
+
+/* rkw - good cannidates for PM_ to start what nm was trying */
+#define OMAP24XX_GPT2		(OMAP24XX_L4_IO_BASE+0x2A000)
+#define OMAP24XX_GPT3		(OMAP24XX_L4_IO_BASE+0x78000)
+#define OMAP24XX_GPT4		(OMAP24XX_L4_IO_BASE+0x7A000)
+#define OMAP24XX_GPT5		(OMAP24XX_L4_IO_BASE+0x7C000)
+#define OMAP24XX_GPT6		(OMAP24XX_L4_IO_BASE+0x7E000)
+#define OMAP24XX_GPT7		(OMAP24XX_L4_IO_BASE+0x80000)
+#define OMAP24XX_GPT8		(OMAP24XX_L4_IO_BASE+0x82000)
+#define OMAP24XX_GPT9		(OMAP24XX_L4_IO_BASE+0x84000)
+#define OMAP24XX_GPT10		(OMAP24XX_L4_IO_BASE+0x86000)
+#define OMAP24XX_GPT11		(OMAP24XX_L4_IO_BASE+0x88000)
+#define OMAP24XX_GPT12		(OMAP24XX_L4_IO_BASE+0x8A000)
+
+#define GPTIMER1_SYSCONFIG	GPT1_REG32(0x010)
+#define GPTIMER2_SYSCONFIG	__REG32(OMAP24XX_GPT2 + 0x10)
+#define GPTIMER3_SYSCONFIG	__REG32(OMAP24XX_GPT3 + 0x10)
+#define GPTIMER4_SYSCONFIG	__REG32(OMAP24XX_GPT4 + 0x10)
+#define GPTIMER5_SYSCONFIG	__REG32(OMAP24XX_GPT5 + 0x10)
+#define GPTIMER6_SYSCONFIG	__REG32(OMAP24XX_GPT6 + 0x10)
+#define GPTIMER7_SYSCONFIG	__REG32(OMAP24XX_GPT7 + 0x10)
+#define GPTIMER8_SYSCONFIG	__REG32(OMAP24XX_GPT8 + 0x10)
+#define GPTIMER9_SYSCONFIG	__REG32(OMAP24XX_GPT9 + 0x10)
+#define GPTIMER10_SYSCONFIG	__REG32(OMAP24XX_GPT10 + 0x10)
+#define GPTIMER11_SYSCONFIG	__REG32(OMAP24XX_GPT11 + 0x10)
+#define GPTIMER12_SYSCONFIG	__REG32(OMAP24XX_GPT12 + 0x10)
+
+#define GPIOX_BASE(X)		(OMAP24XX_GPIO_BASE+(0x2000*((X)-1)))
+
+#define GPIO1_SYSCONFIG		__REG32((GPIOX_BASE(1)+0x10))
+#define GPIO2_SYSCONFIG		__REG32((GPIOX_BASE(2)+0x10))
+#define GPIO3_SYSCONFIG		__REG32((GPIOX_BASE(3)+0x10))
+#define GPIO4_SYSCONFIG		__REG32((GPIOX_BASE(4)+0x10))
+
+/* GP TIMER 1 */
+#define GPTIMER1_TISTAT		GPT1_REG32(0x014)
+#define GPTIMER1_TISR		GPT1_REG32(0x018)
+#define GPTIMER1_TIER		GPT1_REG32(0x01C)
+#define GPTIMER1_TWER		GPT1_REG32(0x020)
+#define GPTIMER1_TCLR		GPT1_REG32(0x024)
+#define GPTIMER1_TCRR		GPT1_REG32(0x028)
+#define GPTIMER1_TLDR		GPT1_REG32(0x02C)
+#define GPTIMER1_TTGR		GPT1_REG32(0x030)
+#define GPTIMER1_TWPS		GPT1_REG32(0x034)
+#define GPTIMER1_TMAR		GPT1_REG32(0x038)
+#define GPTIMER1_TCAR1		GPT1_REG32(0x03C)
+#define GPTIMER1_TSICR		GPT1_REG32(0x040)
+#define GPTIMER1_TCAR2		GPT1_REG32(0x044)
+
+/* rkw -- base fix up please... */
+#define GPTIMER3_TISR		__REG32(OMAP24XX_L4_IO_BASE+0x78018)
+
+/* SDRC */
+#define SDRC_DLLA_CTRL		__REG32(OMAP24XX_SDRC_BASE+0x060)
+#define SDRC_DLLA_STATUS	__REG32(OMAP24XX_SDRC_BASE+0x064)
+#define SDRC_DLLB_CTRL		__REG32(OMAP24XX_SDRC_BASE+0x068)
+#define SDRC_DLLB_STATUS	__REG32(OMAP24XX_SDRC_BASE+0x06C)
+#define SDRC_POWER		__REG32(OMAP24XX_SDRC_BASE+0x070)
+#define SDRC_MR_0		__REG32(OMAP24XX_SDRC_BASE+0x084)
+
+/* GPIO 1 */
+#define GPIO1_BASE		GPIOX_BASE(1)
+#define GPIO1_REG32(offset)	__REG32(GPIO1_BASE + (offset))
+#define GPIO1_IRQENABLE1	GPIO1_REG32(0x01C)
+#define GPIO1_IRQSTATUS1	GPIO1_REG32(0x018)
+#define GPIO1_IRQENABLE2	GPIO1_REG32(0x02C)
+#define GPIO1_IRQSTATUS2	GPIO1_REG32(0x028)
+#define GPIO1_WAKEUPENABLE	GPIO1_REG32(0x020)
+#define GPIO1_RISINGDETECT	GPIO1_REG32(0x048)
+#define GPIO1_DATAIN		GPIO1_REG32(0x038)
+#define GPIO1_OE		GPIO1_REG32(0x034)
+#define GPIO1_DATAOUT		GPIO1_REG32(0x03C)
+
+/* GPIO2 */
+#define GPIO2_BASE		GPIOX_BASE(2)
+#define GPIO2_REG32(offset)	__REG32(GPIO2_BASE + (offset))
+#define GPIO2_IRQENABLE1	GPIO2_REG32(0x01C)
+#define GPIO2_IRQSTATUS1	GPIO2_REG32(0x018)
+#define GPIO2_IRQENABLE2	GPIO2_REG32(0x02C)
+#define GPIO2_IRQSTATUS2	GPIO2_REG32(0x028)
+#define GPIO2_WAKEUPENABLE	GPIO2_REG32(0x020)
+#define GPIO2_RISINGDETECT	GPIO2_REG32(0x048)
+#define GPIO2_DATAIN		GPIO2_REG32(0x038)
+#define GPIO2_OE		GPIO2_REG32(0x034)
+#define GPIO2_DATAOUT		GPIO2_REG32(0x03C)
+
+/* GPIO 3 */
+#define GPIO3_BASE		GPIOX_BASE(3)
+#define GPIO3_REG32(offset)	__REG32(GPIO3_BASE + (offset))
+#define GPIO3_IRQENABLE1	GPIO3_REG32(0x01C)
+#define GPIO3_IRQSTATUS1	GPIO3_REG32(0x018)
+#define GPIO3_IRQENABLE2	GPIO3_REG32(0x02C)
+#define GPIO3_IRQSTATUS2	GPIO3_REG32(0x028)
+#define GPIO3_WAKEUPENABLE	GPIO3_REG32(0x020)
+#define GPIO3_RISINGDETECT	GPIO3_REG32(0x048)
+#define GPIO3_FALLINGDETECT	GPIO3_REG32(0x04C)
+#define GPIO3_DATAIN		GPIO3_REG32(0x038)
+#define GPIO3_OE		GPIO3_REG32(0x034)
+#define GPIO3_DATAOUT		GPIO3_REG32(0x03C)
+#define GPIO3_DEBOUNCENABLE	GPIO3_REG32(0x050)
+#define GPIO3_DEBOUNCINGTIME	GPIO3_REG32(0x054)
+
+/* GPIO 4 */
+#define GPIO4_BASE		GPIOX_BASE(4)
+#define GPIO4_REG32(offset)	__REG32(GPIO4_BASE + (offset))
+#define GPIO4_IRQENABLE1	GPIO4_REG32(0x01C)
+#define GPIO4_IRQSTATUS1	GPIO4_REG32(0x018)
+#define GPIO4_IRQENABLE2	GPIO4_REG32(0x02C)
+#define GPIO4_IRQSTATUS2	GPIO4_REG32(0x028)
+#define GPIO4_WAKEUPENABLE	GPIO4_REG32(0x020)
+#define GPIO4_RISINGDETECT	GPIO4_REG32(0x048)
+#define GPIO4_FALLINGDETECT	GPIO4_REG32(0x04C)
+#define GPIO4_DATAIN		GPIO4_REG32(0x038)
+#define GPIO4_OE		GPIO4_REG32(0x034)
+#define GPIO4_DATAOUT		GPIO4_REG32(0x03C)
+#define GPIO4_DEBOUNCENABLE	GPIO4_REG32(0x050)
+#define GPIO4_DEBOUNCINGTIME	GPIO4_REG32(0x054)
+
+
+/* IO CONFIG */
+#define CONTROL_BASE		(OMAP24XX_CTRL_BASE)
+#define CONTROL_REG32(offset)	__REG32(CONTROL_BASE + (offset))
+
+#define CONTROL_PADCONF_SPI1_NCS2	CONTROL_REG32(0x104)
+#define CONTROL_PADCONF_SYS_XTALOUT	CONTROL_REG32(0x134)
+#define CONTROL_PADCONF_UART1_RX	CONTROL_REG32(0x0C8)
+#define CONTROL_PADCONF_MCBSP1_DX	CONTROL_REG32(0x10C)
+#define CONTROL_PADCONF_GPMC_NCS4	CONTROL_REG32(0x090)
+#define CONTROL_PADCONF_DSS_D5		CONTROL_REG32(0x0B8)
+#define CONTROL_PADCONF_DSS_D9		CONTROL_REG32(0x0BC)
+#define CONTROL_PADCONF_DSS_D13		CONTROL_REG32(0x0C0)
+#define CONTROL_PADCONF_DSS_VSYNC	CONTROL_REG32(0x0CC)
+
+/* CONTROL */
+#define CONTROL_DEVCONF		CONTROL_REG32(0x274)
+
+/* INTERRUPT CONTROLLER */
+#define INTC_BASE		(OMAP24XX_L4_IO_BASE+0xfe000)
+#define INTC_REG32(offset)	__REG32(INTC_BASE + (offset))
+
+#define INTC1_U_BASE		INTC_REG32(0x000)
+#define INTC_MIR0		INTC_REG32(0x084)
+#define INTC_MIR_SET0		INTC_REG32(0x08C)
+#define INTC_MIR_CLEAR0		INTC_REG32(0x088)
+#define INTC_ISR_CLEAR0		INTC_REG32(0x094)
+#define INTC_MIR1		INTC_REG32(0x0A4)
+#define INTC_MIR_SET1		INTC_REG32(0x0AC)
+#define INTC_MIR_CLEAR1		INTC_REG32(0x0A8)
+#define INTC_ISR_CLEAR1		INTC_REG32(0x0B4)
+#define INTC_MIR2		INTC_REG32(0x0C4)
+#define INTC_MIR_SET2		INTC_REG32(0x0CC)
+#define INTC_MIR_CLEAR2		INTC_REG32(0x0C8)
+#define INTC_ISR_CLEAR2		INTC_REG32(0x0D4)
+#define INTC_SIR_IRQ		INTC_REG32(0x040)
+#define INTC_CONTROL		INTC_REG32(0x048)
+#define INTC_ILR11		INTC_REG32(0x12C)
+#define INTC_ILR32		INTC_REG32(0x180)
+#define INTC_ILR37		INTC_REG32(0x194)
+#define INTC_SYSCONFIG		INTC_REG32(0x010)
+
+/* RAM FIREWALL */
+#define RAMFW_BASE		(0x68005000)
+#define RAMFW_REG32(offset)	__REG32(RAMFW_BASE + (offset))
+
+#define RAMFW_REQINFOPERM0	RAMFW_REG32(0x048)
+#define RAMFW_READPERM0		RAMFW_REG32(0x050)
+#define RAMFW_WRITEPERM0	RAMFW_REG32(0x058)
+
+/* GPMC CS1 FPGA ON USER INTERFACE MODULE */
+//#define DEBUG_BOARD_LED_REGISTER 0x04000014
+
+/* GPMC CS0 */
+#define GPMC_CONFIG1_0		GPMC_REG32(0x060)
+#define GPMC_CONFIG2_0		GPMC_REG32(0x064)
+#define GPMC_CONFIG3_0		GPMC_REG32(0x068)
+#define GPMC_CONFIG4_0		GPMC_REG32(0x06C)
+#define GPMC_CONFIG5_0		GPMC_REG32(0x070)
+#define GPMC_CONFIG6_0		GPMC_REG32(0x074)
+#define GPMC_CONFIG7_0		GPMC_REG32(0x078)
+
+/* DSS */
+#define DSS_CONTROL		DISP_REG32(0x040)
+#define DISPC_CONTROL		DISP_REG32(0x440)
+#define DISPC_SYSSTATUS		DISP_REG32(0x414)
+#define DISPC_IRQSTATUS		DISP_REG32(0x418)
+#define DISPC_IRQENABLE		DISP_REG32(0x41C)
+#define DISPC_CONFIG		DISP_REG32(0x444)
+#define DISPC_DEFAULT_COLOR0	DISP_REG32(0x44C)
+#define DISPC_DEFAULT_COLOR1	DISP_REG32(0x450)
+#define DISPC_TRANS_COLOR0	DISP_REG32(0x454)
+#define DISPC_TRANS_COLOR1	DISP_REG32(0x458)
+#define DISPC_LINE_NUMBER	DISP_REG32(0x460)
+#define DISPC_TIMING_H		DISP_REG32(0x464)
+#define DISPC_TIMING_V		DISP_REG32(0x468)
+#define DISPC_POL_FREQ		DISP_REG32(0x46C)
+#define DISPC_DIVISOR		DISP_REG32(0x470)
+#define DISPC_SIZE_DIG		DISP_REG32(0x478)
+#define DISPC_SIZE_LCD		DISP_REG32(0x47C)
+#define DISPC_GFX_BA0		DISP_REG32(0x480)
+#define DISPC_GFX_BA1		DISP_REG32(0x484)
+#define DISPC_GFX_POSITION	DISP_REG32(0x488)
+#define DISPC_GFX_SIZE		DISP_REG32(0x48C)
+#define DISPC_GFX_ATTRIBUTES	DISP_REG32(0x4A0)
+#define DISPC_GFX_FIFO_THRESHOLD	DISP_REG32(0x4A4)
+#define DISPC_GFX_ROW_INC	DISP_REG32(0x4AC)
+#define DISPC_GFX_PIXEL_INC	DISP_REG32(0x4B0)
+#define DISPC_GFX_WINDOW_SKIP	DISP_REG32(0x4B4)
+#define DISPC_GFX_TABLE_BA	DISP_REG32(0x4B8)
+#define DISPC_DATA_CYCLE1	DISP_REG32(0x5D4)
+#define DISPC_DATA_CYCLE2	DISP_REG32(0x5D8)
+#define DISPC_DATA_CYCLE3	DISP_REG32(0x5DC)
+
+/* Wake up define for board */
+#define GPIO97			(1 << 1)
+#define GPIO88			(1 << 24)
+
+#endif /* __ASSEMBLER__ */
+
+#endif
+
+
+
+
+

arch/arm/mach-omap2/serial.c

+/*
+ * arch/arm/mach-omap/omap2/serial.c
+ *
+ * OMAP2 serial support.
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Paul Mundt <paul.mundt@nokia.com>
+ *
+ * Based off of arch/arm/mach-omap/omap1/serial.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_reg.h>
+
+#include <asm/io.h>
+#include <asm/hardware/clock.h>
+
+#include <asm/arch/common.h>
+#include <asm/arch/board.h>
+
+static struct clk * uart1_ick = NULL;
+static struct clk * uart1_fck = NULL;
+static struct clk * uart2_ick = NULL;
+static struct clk * uart2_fck = NULL;
+static struct clk * uart3_ick = NULL;
+static struct clk * uart3_fck = NULL;
+
+static struct plat_serial8250_port serial_platform_data[] = {
+	{
+		.membase	= (char *)IO_ADDRESS(OMAP_UART1_BASE),
+		.mapbase	= (unsigned long)OMAP_UART1_BASE,
+		.irq		= 72,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= OMAP16XX_BASE_BAUD * 16,
+	}, {
+		.membase	= (char *)IO_ADDRESS(OMAP_UART2_BASE),
+		.mapbase	= (unsigned long)OMAP_UART2_BASE,
+		.irq		= 73,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= OMAP16XX_BASE_BAUD * 16,
+	}, {
+		.membase	= (char *)IO_ADDRESS(OMAP_UART3_BASE),
+		.mapbase	= (unsigned long)OMAP_UART3_BASE,
+		.irq		= 74,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= OMAP16XX_BASE_BAUD * 16,
+	}, {
+		.flags		= 0
+	}
+};
+
+static inline unsigned int serial_read_reg(struct plat_serial8250_port *up,
+					   int offset)
+{
+	offset <<= up->regshift;
+	return (unsigned int)__raw_readb(up->membase + offset);
+}
+
+static inline void serial_write_reg(struct plat_serial8250_port *p, int offset,
+				    int value)
+{
+	offset <<= p->regshift;
+	__raw_writeb(value, (unsigned long)(p->membase + offset));
+}
+
+/*
+ * Internal UARTs need to be initialized for the 8250 autoconfig to work
+ * properly. Note that the TX watermark initialization may not be needed
+ * once the 8250.c watermark handling code is merged.
+ */
+static inline void __init omap_serial_reset(struct plat_serial8250_port *p)
+{
+	serial_write_reg(p, UART_OMAP_MDR1, 0x07);
+	serial_write_reg(p, UART_OMAP_SCR, 0x08);
+	serial_write_reg(p, UART_OMAP_MDR1, 0x00);
+	serial_write_reg(p, UART_OMAP_SYSC, 0x01);
+}
+
+void __init omap_serial_init()
+{
+	int i;
+	const struct omap_uart_config *info;
+
+	/*
+	 * Make sure the serial ports are muxed on at this point.
+	 * You have to mux them off in device drivers later on
+	 * if not needed.
+	 */
+
+	info = omap_get_config(OMAP_TAG_UART,
+			       struct omap_uart_config);
+
+	if (info == NULL)
+		return;
+
+	for (i = 0; i < OMAP_MAX_NR_PORTS; i++) {
+		struct plat_serial8250_port *p = serial_platform_data + i;
+
+		if (!(info->enabled_uarts & (1 << i))) {
+			p->membase = 0;
+			p->mapbase = 0;
+			continue;
+		}
+
+		switch (i) {
+		case 0:
+			uart1_ick = clk_get(NULL, "uart1_ick");
+			if (IS_ERR(uart1_ick))
+				printk("Could not get uart1_ick\n");
+			else {
+				clk_use(uart1_ick);
+			}
+
+			uart1_fck = clk_get(NULL, "uart1_fck");
+			if (IS_ERR(uart1_fck))
+				printk("Could not get uart1_fck\n");
+			else {
+				clk_use(uart1_fck);
+			}
+			break;
+		case 1:
+			uart2_ick = clk_get(NULL, "uart2_ick");
+			if (IS_ERR(uart2_ick))
+				printk("Could not get uart2_ick\n");
+			else {
+				clk_use(uart2_ick);
+			}
+
+			uart2_fck = clk_get(NULL, "uart2_fck");
+			if (IS_ERR(uart2_fck))
+				printk("Could not get uart2_fck\n");
+			else {
+				clk_use(uart2_fck);
+			}
+			break;
+		case 2:
+			uart3_ick = clk_get(NULL, "uart3_ick");
+			if (IS_ERR(uart3_ick))
+				printk("Could not get uart3_ick\n");
+			else {
+				clk_use(uart3_ick);
+			}
+
+			uart3_fck = clk_get(NULL, "uart3_fck");
+			if (IS_ERR(uart3_fck))
+				printk("Could not get uart3_fck\n");
+			else {
+				clk_use(uart3_fck);
+			}
+			break;
+		}
+
+		omap_serial_reset(p);
+	}
+}
+
+static struct platform_device serial_device = {
+	.name			= "serial8250",
+	.id			= 0,
+	.dev			= {
+		.platform_data	= serial_platform_data,
+	},
+};
+
+static int __init omap_init(void)
+{
+	return platform_device_register(&serial_device);
+}
+arch_initcall(omap_init);

arch/arm/mach-omap2/sram-fn.S

+/*
+ * linux/arch/arm/mach-omap1/sram.S
+ *
+ * Omap2 specific functions that need to be run in internal SRAM
+ *
+ * (C) Copyright 2004
+ * Texas Instruments, <www.ti.com>
+ * Richard Woodruff <r-woodruff2@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 option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/arch/io.h>
+#include <asm/hardware.h>
+
+#include <asm/arch/prcm.h>
+
+#define TIMER_32KSYNCT_CR_V	IO_ADDRESS(OMAP24XX_32KSYNCT_BASE + 0x010)
+
+#define CM_CLKSEL2_PLL_V	IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x544)
+#define PRCM_VOLTCTRL_V		IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x050)
+#define PRCM_CLKCFG_CTRL_V	IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x080)
+#define CM_CLKEN_PLL_V		IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x500)
+#define CM_IDLEST_CKGEN_V	IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x520)
+#define CM_CLKSEL1_PLL_V	IO_ADDRESS(OMAP24XX_PRCM_BASE + 0x540)
+
+#define SDRC_DLLA_CTRL_V	IO_ADDRESS(OMAP24XX_SDRC_BASE + 0x060)
+#define SDRC_RFR_CTRL_V		IO_ADDRESS(OMAP24XX_SDRC_BASE + 0x0a4)
+
+	.text
+
+ENTRY(sram_ddr_init)
+	stmfd	sp!, {r0 - r12, lr}	@ save registers on stack
+
+	mov	r12, r2			@ capture CS1 vs CS0
+	mov	r8, r3			@ capture force parameter
+
+	/* frequency shift down */
+	ldr	r2, cm_clksel2_pll	@ get address of dpllout reg
+	mov	r3, #0x1		@ value for 1x operation
+	str	r3, [r2]		@ go to L1-freq operation
+
+	/* voltage shift down */
+	mov r9, #0x1			@ set up for L1 voltage call
+	bl voltage_shift		@ go drop voltage
+
+	/* dll lock mode */
+	ldr	r11, sdrc_dlla_ctrl	@ addr of dlla ctrl
+	ldr	r10, [r11]		@ get current val
+	cmp	r12, #0x1		@ cs1 base (2422 es2.05/1)
+	addeq	r11, r11, #0x8		@ if cs1 base, move to DLLB
+	mvn	r9, #0x4		@ mask to get clear bit2
+	and	r10, r10, r9		@ clear bit2 for lock mode.
+	orr	r10, r10, #0x8		@ make sure DLL on (es2 bit pos)
+	orr	r10, r10, #0x2		@ 90 degree phase for all below 133Mhz
+	str	r10, [r11]		@ commit to DLLA_CTRL
+	bl	i_dll_wait		@ wait for dll to lock
+
+	/* get dll value */
+	add	r11, r11, #0x4		@ get addr of status reg
+	ldr	r10, [r11]		@ get locked value
+
+	/* voltage shift up */
+	mov r9, #0x0			@ shift back to L0-voltage
+	bl voltage_shift		@ go raise voltage
+
+	/* frequency shift up */
+	mov	r3, #0x2		@ value for 2x operation
+	str	r3, [r2]		@ go to L0-freq operation
+
+	/* reset entry mode for dllctrl */
+	sub	r11, r11, #0x4		@ move from status to ctrl
+	cmp	r12, #0x1		@ normalize if cs1 based
+	subeq	r11, r11, #0x8		@ possibly back to DLLA
+	cmp	r8, #0x1		@ if forced unlock exit
+	orreq	r1, r1, #0x4		@ make sure exit with unlocked value
+	str	r1, [r11]		@ restore DLLA_CTRL high value
+	add	r11, r11, #0x8		@ move to DLLB_CTRL addr
+	str	r1, [r11]		@ set value DLLB_CTRL
+	bl	i_dll_wait		@ wait for possible lock
+
+	/* set up for return, DDR should be good */
+	str r10, [r0]			@ write dll_status and return counter
+	ldmfd	sp!, {r0 - r12, pc}	@ restore regs and return
+
+	/* ensure the DLL has relocked */
+i_dll_wait:
+	mov	r4, #0x800		@ delay DLL relock, min 0x400 L3 clocks
+i_dll_delay:
+	subs	r4, r4, #0x1
+	bne	i_dll_delay
+	mov	pc, lr
+
+	/*
+	 * shift up or down voltage, use R9 as input to tell level.
+	 * wait for it to finish, use 32k sync counter, 1tick=31uS.
+	 */
+voltage_shift:
+	ldr	r4, prcm_voltctrl	@ get addr of volt ctrl.
+	ldr	r5, [r4]		@ get value.
+	ldr	r6, prcm_mask_val	@ get value of mask
+	and	r5, r5, r6		@ apply mask to clear bits
+	orr	r5, r5, r9		@ bulld value for L0/L1-volt operation.
+	str	r5, [r4]		@ set up for change.
+	mov	r3, #0x4000		@ get val for force
+	orr	r5, r5, r3		@ build value for force
+	str	r5, [r4]		@ Force transition to L1
+
+	ldr	r3, timer_32ksynct_cr	@ get addr of counter
+	ldr	r5, [r3]		@ get value
+	add	r5, r5, #0x3		@ give it at most 93uS
+volt_delay:
+	ldr	r7, [r3]		@ get timer value
+	cmp	r5, r7			@ time up?
+	bhi	volt_delay		@ not yet->branch
+	mov	pc, lr			@ back to caller.
+
+/* relative load constants */
+cm_clksel2_pll:
+	.word CM_CLKSEL2_PLL_V
+sdrc_dlla_ctrl:
+	.word SDRC_DLLA_CTRL_V
+prcm_voltctrl:
+	.word PRCM_VOLTCTRL_V
+prcm_mask_val:
+	.word 0xFFFF3FFC
+timer_32ksynct_cr:
+	.word TIMER_32KSYNCT_CR_V
+ENTRY(sram_ddr_init_sz)
+	.word	. - sram_ddr_init
+
+/*
+ * Reprograms memory timings.
+ * r0 = [PRCM_FULL | PRCM_HALF] r1 = SDRC_DLLA_CTRL value r2 = [DDR | SDR]
+ * PRCM_FULL = 2, PRCM_HALF = 1, DDR = 1, SDR = 0
+ */
+ENTRY(sram_reprogram_sdrc)
+	stmfd	sp!, {r0 - r10, lr}	@ save registers on stack
+	mov	r3, #0x0		@ clear for mrc call
+	mcr	p15, 0, r3, c7, c10, 4	@ memory barrier, finish ARM SDR/DDR
+	nop
+	nop
+	ldr	r6, ddr_sdrc_rfr_ctrl	@ get addr of refresh reg
+	ldr	r5, [r6]		@ get value
+	mov	r5, r5, lsr #8		@ isolate rfr field and drop burst
+
+	cmp	r0, #0x1		@ going to half speed?
+	movne	r9, #0x0		@ if up set flag up for pre up, hi volt
+
+	blne	voltage_shift_c		@ adjust voltage
+
+	cmp	r0, #0x1		@ going to half speed (post branch link)
+	moveq	r5, r5, lsr #1		@ divide by 2 if to half
+	movne	r5, r5, lsl #1		@ mult by 2 if to full
+	mov	r5, r5, lsl #8		@ put rfr field back into place
+	add	r5, r5, #0x1		@ turn on burst of 1
+	ldr	r4, ddr_cm_clksel2_pll	@ get address of out reg
+	ldr	r3, [r4]		@ get curr value
+	orr	r3, r3, #0x3
+	bic	r3, r3, #0x3		@ clear lower bits
+	orr	r3, r3, r0		@ new state value
+	str	r3, [r4]		@ set new state (pll/x, x=1 or 2)
+	nop
+	nop
+
+	moveq	r9, #0x1		@ if speed down, post down, drop volt
+	bleq	voltage_shift_c
+
+	mcr	p15, 0, r3, c7, c10, 4	@ memory barrier
+	str	r5, [r6]		@ set new RFR_1 value
+	add	r6, r6, #0x30		@ get RFR_2 addr
+	str	r5, [r6]		@ set RFR_2
+	nop
+	cmp	r2, #0x1		@ (SDR or DDR) do we need to adjust DLL
+	bne	freq_out		@ leave if SDR, no DLL function
+
+	/* With DDR, we need to take care of the DLL for the frequency change */
+	ldr	r2, ddr_sdrc_dlla_ctrl	@ addr of dlla ctrl
+	str	r1, [r2]		@ write out new SDRC_DLLA_CTRL
+	add	r2, r2, #0x8		@ addr to SDRC_DLLB_CTRL
+	str	r1, [r2]		@ commit to SDRC_DLLB_CTRL
+	mov	r1, #0x2000		@ wait DLL relock, min 0x400 L3 clocks
+dll_wait:
+	subs	r1, r1, #0x1
+	bne	dll_wait
+freq_out:
+	ldmfd	sp!, {r0 - r10, pc}	@ restore regs and return
+
+    /*
+     * shift up or down voltage, use R9 as input to tell level.
+     *	wait for it to finish, use 32k sync counter, 1tick=31uS.
+     */
+voltage_shift_c:
+	ldr	r10, ddr_prcm_voltctrl	@ get addr of volt ctrl
+	ldr	r8, [r10]		@ get value
+	ldr	r7, ddr_prcm_mask_val	@ get value of mask
+	and	r8, r8, r7		@ apply mask to clear bits
+	orr	r8, r8, r9		@ bulld value for L0/L1-volt operation.
+	str	r8, [r10]		@ set up for change.
+	mov	r7, #0x4000		@ get val for force
+	orr	r8, r8, r7		@ build value for force
+	str	r8, [r10]		@ Force transition to L1
+
+	ldr	r10, ddr_timer_32ksynct	@ get addr of counter
+	ldr	r8, [r10]		@ get value
+	add	r8, r8, #0x2		@ give it at most 62uS (min 31+)
+volt_delay_c:
+	ldr	r7, [r10]		@ get timer value
+	cmp	r8, r7			@ time up?
+	bhi	volt_delay_c		@ not yet->branch
+	mov	pc, lr			@ back to caller
+
+ddr_cm_clksel2_pll:
+	.word CM_CLKSEL2_PLL_V
+ddr_sdrc_dlla_ctrl:
+	.word SDRC_DLLA_CTRL_V
+ddr_sdrc_rfr_ctrl:
+	.word SDRC_RFR_CTRL_V
+ddr_prcm_voltctrl:
+	.word PRCM_VOLTCTRL_V
+ddr_prcm_mask_val:
+	.word 0xFFFF3FFC
+ddr_timer_32ksynct:
+	.word TIMER_32KSYNCT_CR_V
+
+ENTRY(sram_reprogram_sdrc_sz)
+	.word	. - sram_reprogram_sdrc
+
+/*
+ * Set dividers and pll. Also recalculate DLL value for DDR and unlock mode.
+ */
+ENTRY(sram_set_prcm)
+	stmfd	sp!, {r0-r12, lr}	@ regs to stack
+	adr	r4, pbegin		@ addr of preload start
+	adr	r8, pend		@ addr of preload end
+	mcrr	p15, 1, r8, r4, c12	@ preload into icache
+pbegin:
+	/* move into fast relock bypass */
+	ldr	r8, pll_ctl		@ get addr
+	ldr	r5, [r8]		@ get val
+	mvn	r6, #0x3		@ clear mask
+	and	r5, r5, r6		@ clear field
+	orr	r7, r5, #0x2		@ fast relock val
+	str	r7, [r8]		@ go to fast relock
+	ldr	r4, pll_stat		@ addr of stat
+block:
+	/* wait for bypass */
+	ldr	r8, [r4]		@ stat value
+	and	r8, r8, #0x3		@ mask for stat
+	cmp	r8, #0x1		@ there yet
+	bne	block			@ loop if not
+
+	/* set new dpll dividers _after_ in bypass */
+	ldr	r4, pll_div		@ get addr
+	str	r0, [r4]		@ set dpll ctrl val
+
+	ldr	r4, set_config		@ get addr
+	mov	r8, #1			@ valid cfg msk
+	str	r8, [r4]		@ make dividers take
+
+	mov	r4, #100		@ dead spin a bit
+wait_a_bit:
+	subs	r4, r4, #1		@ dec loop
+	bne	wait_a_bit		@ delay done?
+
+	/* check if staying in bypass */
+	cmp	r2, #0x1		@ stay in bypass?
+	beq	pend			@ jump over dpll relock
+
+	/* relock DPLL with new vals */
+	ldr	r5, pll_stat		@ get addr
+	ldr	r4, pll_ctl		@ get addr
+	orr	r8, r7, #0x3		@ val for lock dpll
+	str	r8, [r4]		@ set val
+	mov	r0, #1000		@ dead spin a bit
+wait_more:
+	subs	r0, r0, #1		@ dec loop
+	bne	wait_more		@ delay done?
+wait_lock:
+	ldr	r8, [r5]		@ get lock val
+	and	r8, r8, #3		@ isolate field
+	cmp	r8, #2			@ locked?
+	bne	wait_lock		@ wait if not
+pend:
+	/* update memory timings & briefly lock dll */
+	ldr	r4, sdrc_rfr		@ get addr
+	str	r1, [r4]		@ update refresh timing
+	ldr	r11, dlla_ctrl		@ get addr of DLLA ctrl
+	ldr	r10, [r11]		@ get current val
+	mvn	r9, #0x4		@ mask to get clear bit2
+	and	r10, r10, r9		@ clear bit2 for lock mode
+	orr	r10, r10, #0x8		@ make sure DLL on (es2 bit pos)
+	str	r10, [r11]		@ commit to DLLA_CTRL
+	add	r11, r11, #0x8		@ move to dllb
+	str	r10, [r11]		@ hit DLLB also
+
+	mov	r4, #0x800		@ relock time (min 0x400 L3 clocks)
+wait_dll_lock:
+	subs	r4, r4, #0x1
+	bne	wait_dll_lock
+	nop
+	ldmfd	sp!, {r0-r12, pc}	@ restore regs and return
+
+set_config:
+	.word PRCM_CLKCFG_CTRL_V
+pll_ctl:
+	.word CM_CLKEN_PLL_V
+pll_stat:
+	.word CM_IDLEST_CKGEN_V
+pll_div:
+	.word CM_CLKSEL1_PLL_V
+sdrc_rfr:
+	.word SDRC_RFR_CTRL_V
+dlla_ctrl:
+	.word SDRC_DLLA_CTRL_V
+
+ENTRY(sram_set_prcm_sz)
+	.word	. - sram_set_prcm

arch/arm/mach-omap2/timer-gp.c

+/*
+ * linux/arch/arm/mach-omap2/timer-gp.c
+ *
+ * OMAP2 GP timer support.
+ *
+ * Copyright (C) 2005 Nokia Corporation
+ * Author: Paul Mundt <paul.mundt@nokia.com>
+ *         Juha Yrjl <juha.yrjola@nokia.com>
+ *
+ * Some parts based off of TI's 24xx code:
+ *
+ *   Copyright (C) 2004 Texas Instruments, Inc.
+ *
+ * Roughly modelled after the OMAP1 MPU timer code.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <asm/mach/time.h>
+#include <asm/delay.h>
+#include <asm/io.h>
+#include <asm/hardware/clock.h>
+
+#define OMAP2_GP_TIMER1_BASE	0x48028000
+#define OMAP2_GP_TIMER2_BASE	0x4802a000
+#define OMAP2_GP_TIMER3_BASE	0x48078000
+#define OMAP2_GP_TIMER4_BASE	0x4807a000
+
+#define GP_TIMER_TIDR		0x00
+#define GP_TIMER_TISR		0x18
+#define GP_TIMER_TIER		0x1c
+#define GP_TIMER_TCLR		0x24
+#define GP_TIMER_TCRR		0x28
+#define GP_TIMER_TLDR		0x2c
+#define GP_TIMER_TSICR		0x40
+
+#define OS_TIMER_NR		1  /* GP timer 2 */
+
+static unsigned long timer_base[] = {
+	IO_ADDRESS(OMAP2_GP_TIMER1_BASE),
+	IO_ADDRESS(OMAP2_GP_TIMER2_BASE),
+	IO_ADDRESS(OMAP2_GP_TIMER3_BASE),
+	IO_ADDRESS(OMAP2_GP_TIMER4_BASE),
+};
+
+static inline unsigned int timer_read_reg(int nr, unsigned int reg)
+{
+	return __raw_readl(timer_base[nr] + reg);
+}
+
+static inline void timer_write_reg(int nr, unsigned int reg, unsigned int val)
+{
+	__raw_writel(val, timer_base[nr] + reg);
+}
+
+/* Note that we always enable the clock prescale divider bit */
+static inline void omap2_gp_timer_start(int nr, unsigned long load_val)
+{
+	unsigned int tmp;
+
+	tmp = 0xffffffff - load_val;
+
+	timer_write_reg(nr, GP_TIMER_TLDR, tmp);
+	timer_write_reg(nr, GP_TIMER_TCRR, tmp);
+	timer_write_reg(nr, GP_TIMER_TIER, 1 << 1);
+	timer_write_reg(nr, GP_TIMER_TCLR, (1 << 5) | (1 << 1) | 1);
+}
+
+static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id,
+					    struct pt_regs *regs)
+{
+	write_seqlock(&xtime_lock);
+
+	timer_write_reg(OS_TIMER_NR, GP_TIMER_TISR, 1 << 1);
+	timer_tick(regs);
+
+	write_sequnlock(&xtime_lock);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction omap2_gp_timer_irq = {
+	.name		= "gp timer",
+	.flags		= SA_INTERRUPT,
+	.handler	= omap2_gp_timer_interrupt,
+};
+
+static void __init omap2_gp_timer_init(void)
+{
+	struct clk * sys_ck;
+	u32 tick_period = 120000;
+	u32 l;
+
+	/* Reset clock and prescale value */
+	timer_write_reg(OS_TIMER_NR, GP_TIMER_TCLR, 0);
+
+	sys_ck = clk_get(NULL, "sys_ck");
+	if (IS_ERR(sys_ck))
+		printk(KERN_ERR "Could not get sys_ck\n");
+	else {
+		clk_use(sys_ck);
+		tick_period = clk_get_rate(sys_ck) / 100;
+		clk_put(sys_ck);
+	}
+
+	tick_period /= 2;	/* Minimum prescale divider is 2 */
+	tick_period -= 1;
+
+	l = timer_read_reg(OS_TIMER_NR, GP_TIMER_TIDR);
+	printk(KERN_INFO "OMAP2 GP timer (HW version %d.%d)\n",
+	       (l >> 4) & 0x0f, l & 0x0f);
+
+	setup_irq(38, &omap2_gp_timer_irq);
+
+	omap2_gp_timer_start(OS_TIMER_NR, tick_period);
+}
+
+struct sys_timer omap_timer = {
+	.init	= omap2_gp_timer_init,
+};
+

arch/arm/mm/Kconfig

@@ -242,7 +242,7 @@ config CPU_XSCALE
 # ARMv6
 config CPU_V6
 	bool "Support ARM V6 processor"
-	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB
+	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2
 	select CPU_32v6
 	select CPU_ABRT_EV6
 	select CPU_CACHE_V6