ARM: S5PC100: CPU initialization

/* linux/arch/arm/mach-s5pc100/cpu.c

 *

 * Copyright 2009 Samsung Electronics Co.

 *	Byungho Min <bhmin@samsung.com>

 *

 * Based on mach-s3c6410/cpu.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/types.h>

#include <linux/interrupt.h>

#include <linux/list.h>

#include <linux/timer.h>

#include <linux/init.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <linux/sysdev.h>

#include <linux/serial_core.h>

#include <linux/platform_device.h>

#include <asm/mach/arch.h>

#include <asm/mach/map.h>

#include <asm/mach/irq.h>

#include <mach/hardware.h>

#include <mach/map.h>

#include <asm/irq.h>

#include <plat/cpu-freq.h>

#include <plat/regs-serial.h>

#include <plat/cpu.h>

#include <plat/devs.h>

#include <plat/clock.h>

#include <plat/sdhci.h>

#include <plat/iic-core.h>

#include <plat/s5pc100.h>

/* Initial IO mappings */

static struct map_desc s5pc100_iodesc[] __initdata = {

};

/* s5pc100_map_io

 *

 * register the standard cpu IO areas

*/

void __init s5pc100_map_io(void)

{

	iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));

	/* initialise device information early */

}

void __init s5pc100_init_clocks(int xtal)

{

	printk(KERN_DEBUG "%s: initialising clocks\n", __func__);

	s3c24xx_register_baseclocks(xtal);

	s5pc1xx_register_clocks();

	s5pc100_register_clocks();

	s5pc100_setup_clocks();

}

void __init s5pc100_init_irq(void)

{

	u32 vic_valid[] = {~0, ~0, ~0};

	/* VIC0, VIC1, and VIC2 are fully populated. */

	s5pc1xx_init_irq(vic_valid, ARRAY_SIZE(vic_valid));

}

struct sysdev_class s5pc100_sysclass = {

	.name	= "s5pc100-core",

};

static struct sys_device s5pc100_sysdev = {

	.cls	= &s5pc100_sysclass,

};

static int __init s5pc100_core_init(void)

{

	return sysdev_class_register(&s5pc100_sysclass);

}

core_initcall(s5pc100_core_init);

int __init s5pc100_init(void)

{

	printk(KERN_DEBUG "S5PC100: Initialising architecture\n");

	return sysdev_register(&s5pc100_sysdev);

}

/* arch/arm/mach-s5pc100/include/mach/debug-macro.S

 *

 * Copyright 2009 Samsung Electronics Co.

 *	Byungho Min <bhmin@samsung.com>

 *

 *

 * Based on mach-s3c6400/include/mach/debug-macro.S

 *

 * 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.

*/

/* pull in the relevant register and map files. */

#include <mach/map.h>

#include <plat/regs-serial.h>

	/* note, for the boot process to work we have to keep the UART

	 * virtual address aligned to an 1MiB boundary for the L1

	 * mapping the head code makes. We keep the UART virtual address

	 * aligned and add in the offset when we load the value here.

	 */

	.macro addruart, rx

		mrc	p15, 0, \rx, c1, c0

		tst	\rx, #1

		ldreq	\rx, = S3C_PA_UART

		ldrne	\rx, = (S3C_VA_UART + S3C_PA_UART & 0xfffff)

		add	\rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)

	.endm

/* include the reset of the code which will do the work, we're only

 * compiling for a single cpu processor type so the default of s3c2440

 * will be fine with us.

 */

#include <plat/debug-macro.S>

/* arch/arm/mach-s5pc100/include/mach/entry-macro.S

 *

 * Copyright 2009 Samsung Electronics Co.

 *	Byungho Min <bhmin@samsung.com>

 *

 * Based on mach-s3c6400/include/mach/entry-macro.S

 *

 * Low-level IRQ helper macros for the Samsung S5PC1XX series

 *

 * This file is licensed under  the terms of the GNU General Public

 * License version 2. This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

*/

#include <asm/hardware/vic.h>

#include <mach/map.h>

#include <plat/irqs.h>

	.macro	disable_fiq

	.endm

	.macro	get_irqnr_preamble, base, tmp

	ldr	\base, =S3C_VA_VIC0

	.endm

	.macro	arch_ret_to_user, tmp1, tmp2

	.endm

	.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp

	@ check the vic0

	mov	\irqnr, # S3C_IRQ_OFFSET + 31

	ldr	\irqstat, [ \base, # VIC_IRQ_STATUS ]

	teq	\irqstat, #0

	@ otherwise try vic1

	addeq	\tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)

	addeq	\irqnr, \irqnr, #32

	ldreq	\irqstat, [ \tmp, # VIC_IRQ_STATUS ]

	teqeq	\irqstat, #0

	@ otherwise try vic2

	addeq	\tmp, \base, #(S3C_VA_VIC2 - S3C_VA_VIC0)

	addeq	\irqnr, \irqnr, #32

	ldreq	\irqstat, [ \tmp, # VIC_IRQ_STATUS ]

	teqeq	\irqstat, #0

	clzne	\irqstat, \irqstat

	subne	\irqnr, \irqnr, \irqstat

	.endm

/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h

 *

 * Copyright 2009 Samsung Electronics Co.

 *      Byungho Min <bhmin@samsung.com>

 *

 * S3C6400 - Hardware support

 */

#ifndef __ASM_ARCH_HARDWARE_H

#define __ASM_ARCH_HARDWARE_H __FILE__

/* currently nothing here, placeholder */

#endif /* __ASM_ARCH_HARDWARE_H */

/* linux/arch/arm/mach-s5pc100/include/mach/system.h

 *

 * Copyright 2009 Samsung Electronics Co.

 *      Byungho Min <bhmin@samsung.com>

 *

 * S5PC1XX - system implementation

 *

 * Based on mach-s3c6400/include/mach/system.h

 */

#ifndef __ASM_ARCH_SYSTEM_H

#define __ASM_ARCH_SYSTEM_H __FILE__

static void arch_idle(void)

{

	/* nothing here yet */

}

static void arch_reset(char mode, const char *cmd)

{

	/* nothing here yet */

}

#endif /* __ASM_ARCH_IRQ_H */