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/*
* arm/cpu_features.h - feature detection for ARM processors
*/
#ifndef LIB_ARM_CPU_FEATURES_H
#define LIB_ARM_CPU_FEATURES_H
#include "../lib_common.h"
#if (defined(__arm__) || defined(__aarch64__)) && \
defined(__linux__) && \
COMPILER_SUPPORTS_TARGET_FUNCTION_ATTRIBUTE && \
!defined(FREESTANDING)
# define ARM_CPU_FEATURES_ENABLED 1
#else
# define ARM_CPU_FEATURES_ENABLED 0
#endif
#if ARM_CPU_FEATURES_ENABLED
#define ARM_CPU_FEATURE_NEON 0x00000001
#define ARM_CPU_FEATURE_PMULL 0x00000002
#define ARM_CPU_FEATURE_CRC32 0x00000004
#define ARM_CPU_FEATURES_KNOWN 0x80000000
extern volatile u32 _cpu_features;
void setup_cpu_features(void);
static inline u32 get_cpu_features(void)
{
if (_cpu_features == 0)
setup_cpu_features();
return _cpu_features;
}
#endif /* ARM_CPU_FEATURES_ENABLED */
#endif /* LIB_ARM_CPU_FEATURES_H */
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