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/*
* arch/arm/plat-s3c/include/mach/cpu.h
*
* S3C cpu type detection
*
* Copyright (C) 2008 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
* Derived from OMAP cpu.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_S3C_CPU_H
#define __ASM_ARCH_S3C_CPU_H
extern unsigned int system_rev;
#define S3C_SYSTEM_REV_ATAG (system_rev & 0xffff)
#define S3C_SYSTEM_REV_CPU (system_rev & 0xffff0000)
/*
* cpu_is_s3c24xx(): True for s3c2400, s3c2410, s3c2440 and so on
* cpu_is_s3c241x(): True fro s3c2410, s3c2412
* cpu_is_s3c244x(): True fro s3c2440, s3c2442, s3c2443
* cpu_is_s3c64xx(): True for s3c6400, s3c6410
*/
#define GET_S3C_CLASS ((system_rev >> 24) & 0xff)
#define IS_S3C_CLASS(class, id) \
static inline int is_s3c ##class (void) \
{ \
return (GET_S3C_CLASS == (id)) ? 1 : 0; \
}
#define GET_S3C_SUBCLASS ((system_rev >> 20) & 0xfff)
#define IS_S3C_SUBCLASS(subclass, id) \
static inline int is_s3c ##subclass (void) \
{ \
return (GET_S3C_SUBCLASS == (id)) ? 1 : 0; \
}
IS_S3C_CLASS(24xx, 0x24)
IS_S3C_CLASS(64xx, 0x64)
IS_S3C_SUBCLASS(241x, 0x241)
IS_S3C_SUBCLASS(244x, 0x244)
#define cpu_is_s3c24xx() 0
#define cpu_is_s3c241x() 0
#define cpu_is_s3c244x() 0
#define cpu_is_s3c64xx() 0
#if defined(CONFIG_ARCH_S3C2410)
# undef cpu_is_s3c24xx
# undef cpu_is_s3c241x
# undef cpu_is_s3c244x
# define cpu_is_s3c24xx() is_s3c24xx()
# define cpu_is_s3c241x() is_s3c241x()
# define cpu_is_s3c244x() is_s3c244x()
#endif
#if defined(CONFIG_ARCH_S3C64XX)
# undef cpu_is_s3c64xx
# define cpu_is_s3c64xx() is_s3c64xx()
#endif
/*
* Macros to detect individual cpu types.
* cpu_is_s3c2410(): True for s3c2410
* cpu_is_s3c2440(): True for s3c2440
* cpu_is_s3c6400(): True for s3c6400
* cpu_is_s3c6410(): True for s3c6410
*
* Exception:
* Store Revision A to 1
* s3c2410a -> s3c2411
* s3c2440a -> s3c2441
*/
#define GET_S3C_TYPE ((system_rev >> 16) & 0xffff)
#define IS_S3C_TYPE(type, id) \
static inline int is_s3c ##type (void) \
{ \
return (GET_S3C_TYPE == (id)) ? 1 : 0; \
}
IS_S3C_TYPE(2400, 0x2400)
IS_S3C_TYPE(2410, 0x2410)
IS_S3C_TYPE(2410a, 0x2411)
IS_S3C_TYPE(2412, 0x2412)
IS_S3C_TYPE(2440, 0x2440)
IS_S3C_TYPE(2440a, 0x2441)
IS_S3C_TYPE(2442, 0x2442)
IS_S3C_TYPE(2443, 0x2443)
IS_S3C_TYPE(6400, 0x6400)
IS_S3C_TYPE(6410, 0x6410)
#define cpu_is_s3c2400() 0
#define cpu_is_s3c2410() 0
#define cpu_is_s3c2410a() 0
#define cpu_is_s3c2412() 0
#define cpu_is_s3c2440() 0
#define cpu_is_s3c2440a() 0
#define cpu_is_s3c2442() 0
#define cpu_is_s3c2443() 0
#define cpu_is_s3c6400() 0
#define cpu_is_s3c6410() 0
#if defined(CONFIG_ARCH_S3C2410)
# undef cpu_is_s3c2400
# define cpu_is_s3c2400() is_s3c2400()
#endif
#if defined(CONFIG_CPU_S3C2410)
# undef cpu_is_s3c2410
# undef cpu_is_s3c2410a
# define cpu_is_s3c2410() is_s3c2410()
# define cpu_is_s3c2410a() is_s3c2410a()
#endif
#if defined(CONFIG_CPU_S3C2412)
# undef cpu_is_s3c2412
# define cpu_is_s3c2412() is_s3c2412()
#endif
#if defined(CONFIG_CPU_S3C2440)
# undef cpu_is_s3c2440
# undef cpu_is_s3c2440a
# define cpu_is_s3c2440() is_s3c2440()
# define cpu_is_s3c2440a() is_s3c2440a()
#endif
#if defined(CONFIG_CPU_S3C2442)
# undef cpu_is_s3c2442
# define cpu_is_s3c2442() is_s3c2442()
#endif
#if defined(CONFIG_CPU_S3C2443)
# undef cpu_is_s3c2443
# define cpu_is_s3c2443() is_s3c2443()
#endif
#if defined(CONFIG_ARCH_S3C64XX)
# undef cpu_is_s3c6400
# undef cpu_is_s3c6410
# define cpu_is_s3c6400() is_s3c6400()
# define cpu_is_s3c6410() is_s3c6410()
#endif
#endif
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