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diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
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+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
+ *
+ * Miscellaneous helpers which do not fit or are worth
+ * to put into separate headers
+ */
+
+#ifndef __CPUPOWERUTILS_HELPERS__
+#define __CPUPOWERUTILS_HELPERS__
+
+#include <libintl.h>
+#include <locale.h>
+#include <stdbool.h>
+
+#include "helpers/bitmask.h"
+#include <cpupower.h>
+
+/* Internationalization ****************************/
+#ifdef NLS
+
+#define _(String) gettext(String)
+#ifndef gettext_noop
+#define gettext_noop(String) String
+#endif
+#define N_(String) gettext_noop(String)
+
+#else /* !NLS */
+
+#define _(String) String
+#define N_(String) String
+
+#endif
+/* Internationalization ****************************/
+
+extern int run_as_root;
+extern int base_cpu;
+extern struct bitmask *cpus_chosen;
+
+/* Global verbose (-d) stuff *********************************/
+/*
+ * define DEBUG via global Makefile variable
+ * Debug output is sent to stderr, do:
+ * cpupower monitor 2>/tmp/debug
+ * to split debug output away from normal output
+*/
+#ifdef DEBUG
+extern int be_verbose;
+
+#define dprint(fmt, ...) { \
+ if (be_verbose) { \
+ fprintf(stderr, "%s: " fmt, \
+ __func__, ##__VA_ARGS__); \
+ } \
+ }
+#else
+static inline void dprint(const char *fmt, ...) { }
+#endif
+extern int be_verbose;
+/* Global verbose (-v) stuff *********************************/
+
+/* cpuid and cpuinfo helpers **************************/
+enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
+ X86_VENDOR_AMD, X86_VENDOR_HYGON, X86_VENDOR_MAX};
+
+#define CPUPOWER_CAP_INV_TSC 0x00000001
+#define CPUPOWER_CAP_APERF 0x00000002
+#define CPUPOWER_CAP_AMD_CPB 0x00000004
+#define CPUPOWER_CAP_PERF_BIAS 0x00000008
+#define CPUPOWER_CAP_HAS_TURBO_RATIO 0x00000010
+#define CPUPOWER_CAP_IS_SNB 0x00000020
+#define CPUPOWER_CAP_INTEL_IDA 0x00000040
+#define CPUPOWER_CAP_AMD_RDPRU 0x00000080
+#define CPUPOWER_CAP_AMD_HW_PSTATE 0x00000100
+#define CPUPOWER_CAP_AMD_PSTATEDEF 0x00000200
+#define CPUPOWER_CAP_AMD_CPB_MSR 0x00000400
+#define CPUPOWER_CAP_AMD_PSTATE 0x00000800
+
+#define CPUPOWER_AMD_CPBDIS 0x02000000
+
+#define MAX_HW_PSTATES 10
+
+struct cpupower_cpu_info {
+ enum cpupower_cpu_vendor vendor;
+ unsigned int family;
+ unsigned int model;
+ unsigned int stepping;
+ /* CPU capabilities read out from cpuid */
+ unsigned long long caps;
+};
+
+/* get_cpu_info
+ *
+ * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
+ *
+ * Returns 0 on success or a negative error code
+ * Only used on x86, below global's struct values are zero/unknown on
+ * other archs
+ */
+extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
+extern struct cpupower_cpu_info cpupower_cpu_info;
+
+
+/* cpuid and cpuinfo helpers **************************/
+
+/* X86 ONLY ****************************************/
+#if defined(__i386__) || defined(__x86_64__)
+
+#include <pci/pci.h>
+
+/* Read/Write msr ****************************/
+extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
+extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
+
+extern int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val);
+extern int cpupower_intel_get_perf_bias(unsigned int cpu);
+extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
+
+/* Read/Write msr ****************************/
+
+/* PCI stuff ****************************/
+extern int amd_pci_get_num_boost_states(int *active, int *states);
+extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
+ int bus, int slot, int func, int vendor,
+ int dev);
+extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
+ int slot, int func);
+
+/* PCI stuff ****************************/
+
+/* AMD HW pstate decoding **************************/
+
+extern int decode_pstates(unsigned int cpu, int boost_states,
+ unsigned long *pstates, int *no);
+
+/* AMD HW pstate decoding **************************/
+
+extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
+ int *active, int * states);
+
+/* AMD P-State stuff **************************/
+bool cpupower_amd_pstate_enabled(void);
+void amd_pstate_boost_init(unsigned int cpu,
+ int *support, int *active);
+void amd_pstate_show_perf_and_freq(unsigned int cpu,
+ int no_rounding);
+
+/* AMD P-State stuff **************************/
+
+/*
+ * CPUID functions returning a single datum
+ */
+unsigned int cpuid_eax(unsigned int op);
+unsigned int cpuid_ebx(unsigned int op);
+unsigned int cpuid_ecx(unsigned int op);
+unsigned int cpuid_edx(unsigned int op);
+
+/* cpuid and cpuinfo helpers **************************/
+/* X86 ONLY ********************************************/
+#else
+static inline int decode_pstates(unsigned int cpu, int boost_states,
+ unsigned long *pstates, int *no)
+{ return -1; };
+
+static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
+{ return -1; };
+static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
+{ return -1; };
+static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val)
+{ return -1; };
+static inline int cpupower_intel_get_perf_bias(unsigned int cpu)
+{ return -1; };
+static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
+{ return 0; };
+
+/* Read/Write msr ****************************/
+
+static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
+ int *active, int * states)
+{ return -1; }
+
+static inline bool cpupower_amd_pstate_enabled(void)
+{ return false; }
+static inline void amd_pstate_boost_init(unsigned int cpu, int *support,
+ int *active)
+{}
+static inline void amd_pstate_show_perf_and_freq(unsigned int cpu,
+ int no_rounding)
+{}
+
+/* cpuid and cpuinfo helpers **************************/
+
+static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
+static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
+static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
+static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
+/*
+ * CPU State related functions
+ */
+extern struct bitmask *online_cpus;
+extern struct bitmask *offline_cpus;
+
+void get_cpustate(void);
+void print_online_cpus(void);
+void print_offline_cpus(void);
+void print_speed(unsigned long speed, int no_rounding);
+
+#endif /* __CPUPOWERUTILS_HELPERS__ */