cpu.h

omap3 linux 2.6 用nocc去除了冗余代码

/*
 * linux/include/asm-arm/arch-omap/cpu.h
 *
 * OMAP cpu type detection
 *
 * Copyright (C) 2004 Nokia Corporation
 *
 * Written by Tony Lindgren <[e-mail]>
 *
 * 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_OMAP_CPU_H
#define __ASM_ARCH_OMAP_CPU_H


extern unsigned int system_rev;
extern unsigned int scalability_status;

#define omap2_cpu_rev()		((system_rev >> 12) & 0x0f)

/*
 * Test if multicore OMAP support is needed
 */
#undef MULTI_OMAP1
#undef MULTI_OMAP2
#undef MULTI_OMAP3
#undef OMAP_NAME

#  undef MULTI_OMAP3
#  define OMAP_NAME omap34xx

/*
 * Macros to group OMAP into cpu classes.
 * These can be used in most places.
 * cpu_is_omap7xx():	True for OMAP730
 * cpu_is_omap15xx():	True for OMAP1510, OMAP5910 and OMAP310
 * cpu_is_omap16xx():	True for OMAP1610, OMAP5912 and OMAP1710
 * cpu_is_omap24xx():	True for OMAP2420, OMAP2422, OMAP2423, OMAP2430
 * cpu_is_omap242x():	True for OMAP2420, OMAP2422, OMAP2423
 * cpu_is_omap243x():	True for OMAP2430
 * cpu_is_omap343x():	True for OMAP3430
 */
#define GET_OMAP_CLASS	((system_rev >> 24) & 0xff)

#define IS_OMAP_CLASS(class, id)			\
static inline int is_omap ##class (void)		\
{							\
	return (GET_OMAP_CLASS == (id)) ? 1 : 0;	\
}

#define GET_OMAP_SUBCLASS	((system_rev >> 20) & 0x0fff)

#define IS_OMAP_SUBCLASS(subclass, id)			\
static inline int is_omap ##subclass (void)		\
{							\
	return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0;	\
}

IS_OMAP_CLASS(7xx, 0x07)
IS_OMAP_CLASS(15xx, 0x15)
IS_OMAP_CLASS(16xx, 0x16)
IS_OMAP_CLASS(24xx, 0x24)
IS_OMAP_CLASS(34xx, 0x34)

IS_OMAP_SUBCLASS(242x, 0x242)
IS_OMAP_SUBCLASS(243x, 0x243)
IS_OMAP_SUBCLASS(343x, 0x343)

#define cpu_is_omap7xx()		0
#define cpu_is_omap15xx()		0
#define cpu_is_omap16xx()		0
#define cpu_is_omap24xx()		0
#define cpu_is_omap242x()		0
#define cpu_is_omap243x()		0
#define cpu_is_omap343x()		0

#  undef  cpu_is_omap34xx
#  define cpu_is_omap34xx()		1

/*
 * Macros to detect individual cpu types.
 * These are only rarely needed.
 * cpu_is_omap330():	True for OMAP330
 * cpu_is_omap730():	True for OMAP730
 * cpu_is_omap1510():	True for OMAP1510
 * cpu_is_omap1610():	True for OMAP1610
 * cpu_is_omap1611():	True for OMAP1611
 * cpu_is_omap5912():	True for OMAP5912
 * cpu_is_omap1621():	True for OMAP1621
 * cpu_is_omap1710():	True for OMAP1710
 * cpu_is_omap2420():	True for OMAP2420
 * cpu_is_omap2422():	True for OMAP2422
 * cpu_is_omap2423():	True for OMAP2423
 * cpu_is_omap2430():	True for OMAP2430
 * cpu_is_omap3430():	True for OMAP3430
 */
#define GET_OMAP_TYPE	((system_rev >> 16) & 0xffff)

#define IS_OMAP_TYPE(type, id)				\
static inline int is_omap ##type (void)			\
{							\
	return (GET_OMAP_TYPE == (id)) ? 1 : 0;		\
}

IS_OMAP_TYPE(310, 0x0310)
IS_OMAP_TYPE(730, 0x0730)
IS_OMAP_TYPE(1510, 0x1510)
IS_OMAP_TYPE(1610, 0x1610)
IS_OMAP_TYPE(1611, 0x1611)
IS_OMAP_TYPE(5912, 0x1611)
IS_OMAP_TYPE(1621, 0x1621)
IS_OMAP_TYPE(1710, 0x1710)
IS_OMAP_TYPE(2420, 0x2420)
IS_OMAP_TYPE(2422, 0x2422)
IS_OMAP_TYPE(2423, 0x2423)
IS_OMAP_TYPE(2430, 0x2430)
IS_OMAP_TYPE(3430, 0x3430)

#define cpu_is_omap310()		0
#define cpu_is_omap730()		0
#define cpu_is_omap1510()		0
#define cpu_is_omap1610()		0
#define cpu_is_omap5912()		0
#define cpu_is_omap1611()		0
#define cpu_is_omap1621()		0
#define cpu_is_omap1710()		0
#define cpu_is_omap2420()		0
#define cpu_is_omap2422()		0
#define cpu_is_omap2423()		0
#define cpu_is_omap2430()		0
#define cpu_is_omap3430()		0
#define cpu_is_omap3410()		0


/*
 * Whether we have MULTI_OMAP1 or not, we still need to distinguish
 * between 330 vs. 1510 and 1611B/5912 vs. 1710.
 */



# undef cpu_is_omap3430
#define cpu_is_omap3430()		is_omap3430()

/* Macros to detect if we have OMAP1 or OMAP2 */
#define cpu_class_is_omap1()	(cpu_is_omap730() || cpu_is_omap15xx() || \
				cpu_is_omap16xx())
#define cpu_class_is_omap2()	(cpu_is_omap24xx() || cpu_is_omap34xx())

/*
 * Macros to detect silicon revision of OMAP2/3 processors.
 * is_sil_rev_greater_than:	true if passed cpu type & its rev is greater.
 * is_sil_rev_lesser_than:	true if passed cpu type & its rev is lesser.
 * is_sil_rev_equal_to:		true if passed cpu type & its rev is equal.
 * get_sil_rev:			return the silicon rev value.
 */

#define is_sil_rev_greater_than(rev) \
		(((((system_rev & 0xffff0000) >> 16) == \
		((rev & 0xffff0000) >> 16)) && 	\
		(system_rev & 0xf000) >> 12) > ((rev & 0xf000) >> 12))
#define is_sil_rev_less_than(rev) \
		(((((system_rev & 0xffff0000) >> 16) == \
		((rev & 0xffff0000) >> 16)) && 	\
		(system_rev & 0xf000) >> 12) < ((rev & 0xf000) >> 12))
#define is_sil_rev_equal_to(rev) \
		(((((system_rev & 0xffff0000) >> 16) ==	\
		((rev & 0xffff0000) >> 16)) && \
		(system_rev & 0xf000) >> 12) == ((rev & 0xf000) >> 12))
#define get_sil_rev() \
		((system_rev & 0xf000) >> 12)

/* Various silicon macros defined here */
#define OMAP2420_REV_ES1_0	0x24200000
#define OMAP2420_REV_ES2_0	0x24201000
#define OMAP2430_REV_ES1_0	0x24300000
#define OMAP3430_REV_ES1_0	0x34300000
#define OMAP3430_REV_ES2_0	0x34301000
#define OMAP3410		0x34100000
#define OMAP3420		0x34200000

/* since 3410 is a scalable mode of 3430 itself, it doesnt have a separate
 * entry in system_rev. For scalable silicon we use scalability_status
 */
#define get_scalable_cpu	(scalability_status & 0xFFFF0000)
#undef cpu_is_omap3410
#define cpu_is_omap3410() (get_scalable_cpu == OMAP3410)
#define cpu_is_omap3420() (get_scalable_cpu == OMAP3420)

/*
 * Macro to detect device type i.e. EMU/HS/TST/GP/BAD
 */
#define DEVICE_TYPE_TEST	0
#define DEVICE_TYPE_EMU 	1
#define DEVICE_TYPE_SEC 	2
#define DEVICE_TYPE_GP  	3
#define DEVICE_TYPE_BAD 	4

#define is_device_type_test() \
		(((system_rev & 0x700) >> 8) == DEVICE_TYPE_TEST)
#define is_device_type_emu() \
		(((system_rev & 0x700) >> 8) == DEVICE_TYPE_EMU)
#define is_device_type_sec() \
		(((system_rev & 0x700) >> 8) == DEVICE_TYPE_SEC)
#define is_device_type_gp() \
		(((system_rev & 0x700) >> 8) == DEVICE_TYPE_GP)
#define is_device_type_bad() \
		(((system_rev & 0x700) >> 8) == DEVICE_TYPE_BAD)
#define get_device_type() \
		((system_rev & 0x700) >> 8)



#endif