cpuid.h

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/*
 * Copyright (c) 2022 Intel Corp.
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_X86_CPUID_H_
#define ZEPHYR_INCLUDE_ARCH_X86_CPUID_H_
 
#include <stdint.h>
 
#ifndef _ASMLANGUAGE
#ifdef __cplusplus
extern "C" {
#endif
 
#define CPUID_BASIC_INFO_1                      0x01
#define CPUID_EXTENDED_FEATURES_LVL             0x07
#define CPUID_EXTENDED_TOPOLOGY_ENUMERATION     0x0B
#define CPUID_EXTENDED_TOPOLOGY_ENUMERATION_V2  0x1F
 
/* Bits to check in CPUID extended features */
#define CPUID_SPEC_CTRL_SSBD    BIT(31)
#define CPUID_SPEC_CTRL_IBRS    BIT(26)
 
uint32_t z_x86_cpuid_extended_features(void);
 
uint8_t z_x86_cpuid_get_current_physical_apic_id(void);
 
#ifdef __cplusplus
}
#endif
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_X86_CPUID_H_ */