xref: /openbmc/linux/arch/arm/mach-s3c/cpu.h (revision 0d297df0)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4  *		http://www.samsung.com/
5  *
6  * Copyright (c) 2004-2005 Simtec Electronics
7  *	Ben Dooks <ben@simtec.co.uk>
8  *
9  * Header file for Samsung CPU support
10  */
11 
12 /* todo - fix when rmk changes iodescs to use `void __iomem *` */
13 
14 #ifndef __SAMSUNG_PLAT_CPU_H
15 #define __SAMSUNG_PLAT_CPU_H
16 
17 extern unsigned long samsung_cpu_id;
18 
19 #define S3C6400_CPU_ID		0x36400000
20 #define S3C6410_CPU_ID		0x36410000
21 #define S3C64XX_CPU_MASK	0xFFFFF000
22 
23 #define S5PV210_CPU_ID		0x43110000
24 #define S5PV210_CPU_MASK	0xFFFFF000
25 
26 #define IS_SAMSUNG_CPU(name, id, mask)		\
27 static inline int is_samsung_##name(void)	\
28 {						\
29 	return ((samsung_cpu_id & mask) == (id & mask));	\
30 }
31 
32 IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
33 IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK)
34 
35 #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
36 # define soc_is_s3c6400()	is_samsung_s3c6400()
37 # define soc_is_s3c6410()	is_samsung_s3c6410()
38 # define soc_is_s3c64xx()	(is_samsung_s3c6400() || is_samsung_s3c6410())
39 #else
40 # define soc_is_s3c6400()	0
41 # define soc_is_s3c6410()	0
42 # define soc_is_s3c64xx()	0
43 #endif
44 
45 #ifndef MHZ
46 #define MHZ (1000*1000)
47 #endif
48 
49 #define print_mhz(m) ((m) / MHZ), (((m) / 1000) % 1000)
50 
51 /* forward declaration */
52 struct s3c24xx_uart_resources;
53 struct platform_device;
54 struct s3c2410_uartcfg;
55 struct map_desc;
56 
57 /* per-cpu initialisation function table. */
58 
59 struct cpu_table {
60 	unsigned long	idcode;
61 	unsigned long	idmask;
62 	void		(*map_io)(void);
63 	void		(*init_uarts)(struct s3c2410_uartcfg *cfg, int no);
64 	int		(*init)(void);
65 	const char	*name;
66 };
67 
68 extern void s3c_init_cpu(unsigned long idcode,
69 			 struct cpu_table *cpus, unsigned int cputab_size);
70 
71 /* core initialisation functions */
72 extern void s3c64xx_init_cpu(void);
73 
74 extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
75 extern void s3c24xx_init_uartdevs(char *name,
76 				  struct s3c24xx_uart_resources *res,
77 				  struct s3c2410_uartcfg *cfg, int no);
78 
79 extern struct bus_type s3c6410_subsys;
80 
81 #endif
82