d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/mach-ixp4xx/include/mach/cpu.h
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*
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* IXP4XX cpu type detection
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*
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* Copyright (C) 2007 MontaVista Software, Inc.
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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 <linux/io.h>
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#include <asm/cputype.h>
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/* Processor id value in CP15 Register 0 */
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#define IXP42X_PROCESSOR_ID_VALUE 0x690541c0 /* including unused 0x690541Ex */
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#define IXP42X_PROCESSOR_ID_MASK 0xffffffc0
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#define IXP43X_PROCESSOR_ID_VALUE 0x69054040
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#define IXP43X_PROCESSOR_ID_MASK 0xfffffff0
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#define IXP46X_PROCESSOR_ID_VALUE 0x69054200 /* including IXP455 */
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#define IXP46X_PROCESSOR_ID_MASK 0xfffffff0
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#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
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IXP42X_PROCESSOR_ID_VALUE)
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#define cpu_is_ixp42x() ((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
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IXP42X_PROCESSOR_ID_VALUE)
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#define cpu_is_ixp43x() ((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
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IXP43X_PROCESSOR_ID_VALUE)
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#define cpu_is_ixp46x() ((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
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IXP46X_PROCESSOR_ID_VALUE)
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static inline u32 ixp4xx_read_feature_bits(void)
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{
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u32 val = ~__raw_readl(IXP4XX_EXP_CFG2);
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if (cpu_is_ixp42x_rev_a0())
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return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
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IXP4XX_FEATURE_AES);
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if (cpu_is_ixp42x())
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return val & IXP42X_FEATURE_MASK;
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if (cpu_is_ixp43x())
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return val & IXP43X_FEATURE_MASK;
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return val & IXP46X_FEATURE_MASK;
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}
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static inline void ixp4xx_write_feature_bits(u32 value)
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{
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__raw_writel(~value, IXP4XX_EXP_CFG2);
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}
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#endif /* _ASM_ARCH_CPU_H */
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