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 const struct bus_type s3c6410_subsys; |
80 | |
81 | #endif |
82 | |