ARM: 8663/1: wire up HWCAP/HWCAP2 feature bits to the CPU modalias

	select GENERIC_ALLOCATOR

	select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)

	select GENERIC_CLOCKEVENTS_BROADCAST if SMP

	select GENERIC_CPU_AUTOPROBE

	select GENERIC_EARLY_IOREMAP

	select GENERIC_IDLE_POLL_SETUP

	select GENERIC_IRQ_PROBE

/*

 * Copyright (C) 2017 Linaro Ltd. <ard.biesheuvel@linaro.org>

 *

 * 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_CPUFEATURE_H

#define __ASM_CPUFEATURE_H

#include <linux/log2.h>

#include <asm/hwcap.h>

/*

 * Due to the fact that ELF_HWCAP is a 32-bit type on ARM, and given the number

 * of optional CPU features it defines, ARM's CPU hardware capability bits have

 * been distributed over separate elf_hwcap and elf_hwcap2 variables, each of

 * which covers a subset of the available CPU features.

 *

 * Currently, only a few of those are suitable for automatic module loading

 * (which is the primary use case of this facility) and those happen to be all

 * covered by HWCAP2. So let's only cover those via the cpu_feature()

 * convenience macro for now (which is used by module_cpu_feature_match()).

 * However, all capabilities are exposed via the modalias, and can be matched

 * using an explicit MODULE_DEVICE_TABLE() that uses __hwcap_feature() directly.

 */

#define MAX_CPU_FEATURES	64

#define __hwcap_feature(x)	ilog2(HWCAP_ ## x)

#define __hwcap2_feature(x)	(32 + ilog2(HWCAP2_ ## x))

#define cpu_feature(x)		__hwcap2_feature(x)

static inline bool cpu_have_feature(unsigned int num)

{

	return num < 32 ? elf_hwcap & BIT(num) : elf_hwcap2 & BIT(num - 32);

}

#endif