ARK-OS/arkos/kernel/arch/arm/mach-s3c/cpu.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com/
 *
 * Copyright (c) 2004-2005 Simtec Electronics
 *	Ben Dooks <ben@simtec.co.uk>
 *
 * Header file for Samsung CPU support
 */

/* todo - fix when rmk changes iodescs to use `void __iomem *` */

#ifndef __SAMSUNG_PLAT_CPU_H
#define __SAMSUNG_PLAT_CPU_H

extern unsigned long samsung_cpu_id;

#define S3C6400_CPU_ID		0x36400000
#define S3C6410_CPU_ID		0x36410000
#define S3C64XX_CPU_MASK	0xFFFFF000

#define S5PV210_CPU_ID		0x43110000
#define S5PV210_CPU_MASK	0xFFFFF000

#define IS_SAMSUNG_CPU(name, id, mask)		\
static inline int is_samsung_##name(void)	\
{						\
	return ((samsung_cpu_id & mask) == (id & mask));	\
}

IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK)

#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
# define soc_is_s3c6400()	is_samsung_s3c6400()
# define soc_is_s3c6410()	is_samsung_s3c6410()
# define soc_is_s3c64xx()	(is_samsung_s3c6400() || is_samsung_s3c6410())
#else
# define soc_is_s3c6400()	0
# define soc_is_s3c6410()	0
# define soc_is_s3c64xx()	0
#endif

#ifndef MHZ
#define MHZ (1000*1000)
#endif

#define print_mhz(m) ((m) / MHZ), (((m) / 1000) % 1000)

/* forward declaration */
struct s3c24xx_uart_resources;
struct platform_device;
struct s3c2410_uartcfg;
struct map_desc;

/* per-cpu initialisation function table. */

struct cpu_table {
	unsigned long	idcode;
	unsigned long	idmask;
	void		(*map_io)(void);
	void		(*init_uarts)(struct s3c2410_uartcfg *cfg, int no);
	int		(*init)(void);
	const char	*name;
};

extern void s3c_init_cpu(unsigned long idcode,
			 struct cpu_table *cpus, unsigned int cputab_size);

/* core initialisation functions */
extern void s3c64xx_init_cpu(void);

extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
extern void s3c24xx_init_uartdevs(char *name,
				  struct s3c24xx_uart_resources *res,
				  struct s3c2410_uartcfg *cfg, int no);

extern const struct bus_type s3c6410_subsys;

#endif