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e7498281d3
Several drivers shared between AT91 and AVR32 chips use cpu_is_xxx() to handle CPU-specific differences. Currently, such code needs to be inside #ifdef CONFIG_ARCH_AT91 because the macros don't exist on AVR32. By defining the same macros on both AT91 and AVR32, these #ifdefs can be eliminated. Since the macros will evaluate to a constant value for CPUs that aren't supported by the current architecture, any code that is only needed on AT91 will be optimized away on AVR32 and vice versa. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Brownell <david-b@pacbell.net> Acked-by: Andrew Victor <andrew@sanpeople.com> Cc: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* include/asm-arm/arch-at91/cpu.h
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*
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* Copyright (C) 2006 SAN People
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#ifndef __ASM_ARCH_CPU_H
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#define __ASM_ARCH_CPU_H
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#include <asm/hardware.h>
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#include <asm/arch/at91_dbgu.h>
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#define ARCH_ID_AT91RM9200 0x09290780
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#define ARCH_ID_AT91SAM9260 0x019803a0
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#define ARCH_ID_AT91SAM9261 0x019703a0
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#define ARCH_ID_AT91SAM9263 0x019607a0
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#define ARCH_ID_AT91SAM9XE128 0x329973a0
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#define ARCH_ID_AT91SAM9XE256 0x329a93a0
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#define ARCH_ID_AT91SAM9XE512 0x329aa3a0
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static inline unsigned long at91_cpu_identify(void)
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{
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return (at91_sys_read(AT91_DBGU_CIDR) & ~AT91_CIDR_VERSION);
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}
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#define ARCH_FAMILY_AT91X92 0x09200000
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#define ARCH_FAMILY_AT91SAM9 0x01900000
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#define ARCH_FAMILY_AT91SAM9XE 0x02900000
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static inline unsigned long at91_arch_identify(void)
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{
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return (at91_sys_read(AT91_DBGU_CIDR) & AT91_CIDR_ARCH);
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}
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#ifdef CONFIG_ARCH_AT91RM9200
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#define cpu_is_at91rm9200() (at91_cpu_identify() == ARCH_ID_AT91RM9200)
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#else
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#define cpu_is_at91rm9200() (0)
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#endif
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#ifdef CONFIG_ARCH_AT91SAM9260
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#define cpu_is_at91sam9xe() (at91_arch_identify() == ARCH_FAMILY_AT91SAM9XE)
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#define cpu_is_at91sam9260() ((at91_cpu_identify() == ARCH_ID_AT91SAM9260) || cpu_is_at91sam9xe())
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#else
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#define cpu_is_at91sam9xe() (0)
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#define cpu_is_at91sam9260() (0)
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#endif
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#ifdef CONFIG_ARCH_AT91SAM9261
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#define cpu_is_at91sam9261() (at91_cpu_identify() == ARCH_ID_AT91SAM9261)
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#else
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#define cpu_is_at91sam9261() (0)
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#endif
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#ifdef CONFIG_ARCH_AT91SAM9263
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#define cpu_is_at91sam9263() (at91_cpu_identify() == ARCH_ID_AT91SAM9263)
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#else
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#define cpu_is_at91sam9263() (0)
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#endif
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/*
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* Since this is ARM, we will never run on any AVR32 CPU. But these
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* definitions may reduce clutter in common drivers.
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*/
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#define cpu_is_at32ap7000() (0)
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#endif
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