LXR linux/arch/arm/plat-samsung/include/plat/cpu.h

   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
  17extern unsigned long samsung_cpu_id;
  18
  19#define S3C2410_CPU_ID          0x32410000
  20#define S3C2410_CPU_MASK        0xFFFFFFFF
  21
  22#define S3C24XX_CPU_ID          0x32400000
  23#define S3C24XX_CPU_MASK        0xFFF00000
  24
  25#define S3C2412_CPU_ID          0x32412000
  26#define S3C2412_CPU_MASK        0xFFFFF000
  27
  28#define S3C6400_CPU_ID          0x36400000
  29#define S3C6410_CPU_ID          0x36410000
  30#define S3C64XX_CPU_MASK        0xFFFFF000
  31
  32#define S5PV210_CPU_ID          0x43110000
  33#define S5PV210_CPU_MASK        0xFFFFF000
  34
  35#define IS_SAMSUNG_CPU(name, id, mask)          \
  36static inline int is_samsung_##name(void)       \
  37{                                               \
  38        return ((samsung_cpu_id & mask) == (id & mask));        \
  39}
  40
  41IS_SAMSUNG_CPU(s3c2410, S3C2410_CPU_ID, S3C2410_CPU_MASK)
  42IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK)
  43IS_SAMSUNG_CPU(s3c2412, S3C2412_CPU_ID, S3C2412_CPU_MASK)
  44IS_SAMSUNG_CPU(s3c6400, S3C6400_CPU_ID, S3C64XX_CPU_MASK)
  45IS_SAMSUNG_CPU(s3c6410, S3C6410_CPU_ID, S3C64XX_CPU_MASK)
  46
  47#if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \
  48    defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2440) || \
  49    defined(CONFIG_CPU_S3C2442) || defined(CONFIG_CPU_S3C244X) || \
  50    defined(CONFIG_CPU_S3C2443)
  51# define soc_is_s3c24xx()       is_samsung_s3c24xx()
  52# define soc_is_s3c2410()       is_samsung_s3c2410()
  53#else
  54# define soc_is_s3c24xx()       0
  55# define soc_is_s3c2410()       0
  56#endif
  57
  58#if defined(CONFIG_CPU_S3C2412)
  59# define soc_is_s3c2412()       is_samsung_s3c2412()
  60#else
  61# define soc_is_s3c2412()       0
  62#endif
  63
  64#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
  65# define soc_is_s3c6400()       is_samsung_s3c6400()
  66# define soc_is_s3c6410()       is_samsung_s3c6410()
  67# define soc_is_s3c64xx()       (is_samsung_s3c6400() || is_samsung_s3c6410())
  68#else
  69# define soc_is_s3c6400()       0
  70# define soc_is_s3c6410()       0
  71# define soc_is_s3c64xx()       0
  72#endif
  73
  74#define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE }
  75
  76#ifndef KHZ
  77#define KHZ (1000)
  78#endif
  79
  80#ifndef MHZ
  81#define MHZ (1000*1000)
  82#endif
  83
  84#define print_mhz(m) ((m) / MHZ), (((m) / 1000) % 1000)
  85
  86/* forward declaration */
  87struct s3c24xx_uart_resources;
  88struct platform_device;
  89struct s3c2410_uartcfg;
  90struct map_desc;
  91
  92/* per-cpu initialisation function table. */
  93
  94struct cpu_table {
  95        unsigned long   idcode;
  96        unsigned long   idmask;
  97        void            (*map_io)(void);
  98        void            (*init_uarts)(struct s3c2410_uartcfg *cfg, int no);
  99        void            (*init_clocks)(int xtal);
 100        int             (*init)(void);
 101        const char      *name;
 102};
 103
 104extern void s3c_init_cpu(unsigned long idcode,
 105                         struct cpu_table *cpus, unsigned int cputab_size);
 106
 107/* core initialisation functions */
 108
 109extern void s3c24xx_init_io(struct map_desc *mach_desc, int size);
 110
 111extern void s3c64xx_init_cpu(void);
 112extern void s5p_init_cpu(const void __iomem *cpuid_addr);
 113
 114extern unsigned int samsung_rev(void);
 115
 116extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);
 117
 118extern void s3c24xx_init_clocks(int xtal);
 119
 120extern void s3c24xx_init_uartdevs(char *name,
 121                                  struct s3c24xx_uart_resources *res,
 122                                  struct s3c2410_uartcfg *cfg, int no);
 123
 124extern struct syscore_ops s3c2410_pm_syscore_ops;
 125extern struct syscore_ops s3c2412_pm_syscore_ops;
 126extern struct syscore_ops s3c2416_pm_syscore_ops;
 127extern struct syscore_ops s3c244x_pm_syscore_ops;
 128
 129/* system device subsystems */
 130
 131extern struct bus_type s3c2410_subsys;
 132extern struct bus_type s3c2410a_subsys;
 133extern struct bus_type s3c2412_subsys;
 134extern struct bus_type s3c2416_subsys;
 135extern struct bus_type s3c2440_subsys;
 136extern struct bus_type s3c2442_subsys;
 137extern struct bus_type s3c2443_subsys;
 138extern struct bus_type s3c6410_subsys;
 139
 140#endif
 141