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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-15 18:15:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-15 18:15:17 +0200 |
| commit | f3efbe582b5396d134024c03a5fa253f2a85d9a6 (patch) | |
| tree | e4e15b7567b82d24cb1e7327398286a2b88df04c /arch/arm/mach-ixp4xx/include/mach/cpu.h | |
| parent | 05d3ed0a1fe3ea05ab9f3b8d32576a0bc2e19660 (diff) | |
| parent | b635acec48bcaa9183fcbf4e3955616b0d4119b5 (diff) | |
Merge branch 'linus' into x86/gart
Diffstat (limited to 'arch/arm/mach-ixp4xx/include/mach/cpu.h')
| -rw-r--r-- | arch/arm/mach-ixp4xx/include/mach/cpu.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/include/mach/cpu.h b/arch/arm/mach-ixp4xx/include/mach/cpu.h new file mode 100644 index 00000000000..ff8aa2393bf --- /dev/null +++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h @@ -0,0 +1,46 @@ +/* + * arch/arm/mach-ixp4xx/include/mach/cpu.h + * + * IXP4XX cpu type detection + * + * Copyright (C) 2007 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef __ASM_ARCH_CPU_H__ +#define __ASM_ARCH_CPU_H__ + +extern unsigned int processor_id; +/* Processor id value in CP15 Register 0 */ +#define IXP425_PROCESSOR_ID_VALUE 0x690541c0 +#define IXP435_PROCESSOR_ID_VALUE 0x69054040 +#define IXP465_PROCESSOR_ID_VALUE 0x69054200 +#define IXP4XX_PROCESSOR_ID_MASK 0xfffffff0 + +#define cpu_is_ixp42x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ + IXP425_PROCESSOR_ID_VALUE) +#define cpu_is_ixp43x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ + IXP435_PROCESSOR_ID_VALUE) +#define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ + IXP465_PROCESSOR_ID_VALUE) + +static inline u32 ixp4xx_read_feature_bits(void) +{ + unsigned int val = ~*IXP4XX_EXP_CFG2; + val &= ~IXP4XX_FEATURE_RESERVED; + if (!cpu_is_ixp46x()) + val &= ~IXP4XX_FEATURE_IXP46X_ONLY; + + return val; +} + +static inline void ixp4xx_write_feature_bits(u32 value) +{ + *IXP4XX_EXP_CFG2 = ~value; +} + +#endif /* _ASM_ARCH_CPU_H */ |