summaryrefslogtreecommitdiffstats
path: root/tools/power/cpupower/debug
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /tools/power/cpupower/debug
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--tools/power/cpupower/debug/i386/Makefile42
-rw-r--r--tools/power/cpupower/debug/i386/centrino-decode.c112
-rw-r--r--tools/power/cpupower/debug/i386/dump_psb.c196
-rw-r--r--tools/power/cpupower/debug/i386/intel_gsic.c77
-rw-r--r--tools/power/cpupower/debug/i386/powernow-k8-decode.c95
-rw-r--r--tools/power/cpupower/debug/kernel/Makefile23
-rw-r--r--tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c111
-rw-r--r--tools/power/cpupower/debug/x86_64/Makefile31
8 files changed, 687 insertions, 0 deletions
diff --git a/tools/power/cpupower/debug/i386/Makefile b/tools/power/cpupower/debug/i386/Makefile
new file mode 100644
index 000000000..b3f771039
--- /dev/null
+++ b/tools/power/cpupower/debug/i386/Makefile
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: GPL-2.0
+OUTPUT=./
+ifeq ("$(origin O)", "command line")
+ OUTPUT := $(O)/
+endif
+
+DESTDIR =
+bindir = /usr/bin
+
+INSTALL = /usr/bin/install
+
+
+default: all
+
+$(OUTPUT)centrino-decode: centrino-decode.c
+ $(CC) $(CFLAGS) -o $@ centrino-decode.c
+
+$(OUTPUT)dump_psb: dump_psb.c
+ $(CC) $(CFLAGS) -o $@ dump_psb.c
+
+$(OUTPUT)intel_gsic: intel_gsic.c
+ $(CC) $(CFLAGS) -o $@ -llrmi intel_gsic.c
+
+$(OUTPUT)powernow-k8-decode: powernow-k8-decode.c
+ $(CC) $(CFLAGS) -o $@ powernow-k8-decode.c
+
+all: $(OUTPUT)centrino-decode $(OUTPUT)dump_psb $(OUTPUT)intel_gsic $(OUTPUT)powernow-k8-decode
+
+clean:
+ rm -rf $(OUTPUT)centrino-decode
+ rm -rf $(OUTPUT)dump_psb
+ rm -rf $(OUTPUT)intel_gsic
+ rm -rf $(OUTPUT)powernow-k8-decode
+
+install:
+ $(INSTALL) -d $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)centrino-decode $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)powernow-k8-decode $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)dump_psb $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)intel_gsic $(DESTDIR)${bindir}
+
+.PHONY: all default clean install
diff --git a/tools/power/cpupower/debug/i386/centrino-decode.c b/tools/power/cpupower/debug/i386/centrino-decode.c
new file mode 100644
index 000000000..700cd31a7
--- /dev/null
+++ b/tools/power/cpupower/debug/i386/centrino-decode.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * (C) 2003 - 2004 Dominik Brodowski <linux@dominikbrodowski.de>
+ *
+ * Based on code found in
+ * linux/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+ * and originally developed by Jeremy Fitzhardinge.
+ *
+ * USAGE: simply run it to decode the current settings on CPU 0,
+ * or pass the CPU number as argument, or pass the MSR content
+ * as argument.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define MCPU 32
+
+#define MSR_IA32_PERF_STATUS 0x198
+
+static int rdmsr(unsigned int cpu, unsigned int msr,
+ unsigned int *lo, unsigned int *hi)
+{
+ int fd;
+ char file[20];
+ unsigned long long val;
+ int retval = -1;
+
+ *lo = *hi = 0;
+
+ if (cpu > MCPU)
+ goto err1;
+
+ sprintf(file, "/dev/cpu/%d/msr", cpu);
+ fd = open(file, O_RDONLY);
+
+ if (fd < 0)
+ goto err1;
+
+ if (lseek(fd, msr, SEEK_CUR) == -1)
+ goto err2;
+
+ if (read(fd, &val, 8) != 8)
+ goto err2;
+
+ *lo = (uint32_t )(val & 0xffffffffull);
+ *hi = (uint32_t )(val>>32 & 0xffffffffull);
+
+ retval = 0;
+err2:
+ close(fd);
+err1:
+ return retval;
+}
+
+static void decode (unsigned int msr)
+{
+ unsigned int multiplier;
+ unsigned int mv;
+
+ multiplier = ((msr >> 8) & 0xFF);
+
+ mv = (((msr & 0xFF) * 16) + 700);
+
+ printf("0x%x means multiplier %d @ %d mV\n", msr, multiplier, mv);
+}
+
+static int decode_live(unsigned int cpu)
+{
+ unsigned int lo, hi;
+ int err;
+
+ err = rdmsr(cpu, MSR_IA32_PERF_STATUS, &lo, &hi);
+
+ if (err) {
+ printf("can't get MSR_IA32_PERF_STATUS for cpu %d\n", cpu);
+ printf("Possible trouble: you don't run an Enhanced SpeedStep capable cpu\n");
+ printf("or you are not root, or the msr driver is not present\n");
+ return 1;
+ }
+
+ decode(lo);
+
+ return 0;
+}
+
+int main (int argc, char **argv)
+{
+ unsigned int cpu, mode = 0;
+
+ if (argc < 2)
+ cpu = 0;
+ else {
+ cpu = strtoul(argv[1], NULL, 0);
+ if (cpu >= MCPU)
+ mode = 1;
+ }
+
+ if (mode)
+ decode(cpu);
+ else
+ decode_live(cpu);
+
+ return 0;
+}
diff --git a/tools/power/cpupower/debug/i386/dump_psb.c b/tools/power/cpupower/debug/i386/dump_psb.c
new file mode 100644
index 000000000..2c768cf70
--- /dev/null
+++ b/tools/power/cpupower/debug/i386/dump_psb.c
@@ -0,0 +1,196 @@
+/*
+ * dump_psb. (c) 2004, Dave Jones, Red Hat Inc.
+ * Licensed under the GPL v2.
+ */
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#include <sys/mman.h>
+
+#define LEN (0x100000 - 0xc0000)
+#define OFFSET (0xc0000)
+
+#ifndef __packed
+#define __packed __attribute((packed))
+#endif
+
+static long relevant;
+
+static const int fid_to_mult[32] = {
+ 110, 115, 120, 125, 50, 55, 60, 65,
+ 70, 75, 80, 85, 90, 95, 100, 105,
+ 30, 190, 40, 200, 130, 135, 140, 210,
+ 150, 225, 160, 165, 170, 180, -1, -1,
+};
+
+static const int vid_to_voltage[32] = {
+ 2000, 1950, 1900, 1850, 1800, 1750, 1700, 1650,
+ 1600, 1550, 1500, 1450, 1400, 1350, 1300, 0,
+ 1275, 1250, 1225, 1200, 1175, 1150, 1125, 1100,
+ 1075, 1050, 1024, 1000, 975, 950, 925, 0,
+};
+
+struct psb_header {
+ char signature[10];
+ u_char version;
+ u_char flags;
+ u_short settlingtime;
+ u_char res1;
+ u_char numpst;
+} __packed;
+
+struct pst_header {
+ u_int32_t cpuid;
+ u_char fsb;
+ u_char maxfid;
+ u_char startvid;
+ u_char numpstates;
+} __packed;
+
+static u_int fsb;
+static u_int sgtc;
+
+static int
+decode_pst(char *p, int npstates)
+{
+ int i;
+ int freq, fid, vid;
+
+ for (i = 0; i < npstates; ++i) {
+ fid = *p++;
+ vid = *p++;
+ freq = 100 * fid_to_mult[fid] * fsb;
+
+ printf(" %2d %8dkHz FID %02x (%2d.%01d) VID %02x (%4dmV)\n",
+ i,
+ freq,
+ fid, fid_to_mult[fid]/10, fid_to_mult[fid]%10,
+ vid, vid_to_voltage[vid]);
+ }
+
+ return 0;
+}
+
+static
+void decode_psb(char *p, int numpst)
+{
+ int i;
+ struct psb_header *psb;
+ struct pst_header *pst;
+
+ psb = (struct psb_header*) p;
+
+ if (psb->version != 0x12)
+ return;
+
+ printf("PSB version: %hhx flags: %hhx settling time %hhuus res1 %hhx num pst %hhu\n",
+ psb->version,
+ psb->flags,
+ psb->settlingtime,
+ psb->res1,
+ psb->numpst);
+ sgtc = psb->settlingtime * 100;
+
+ if (sgtc < 10000)
+ sgtc = 10000;
+
+ p = ((char *) psb) + sizeof(struct psb_header);
+
+ if (numpst < 0)
+ numpst = psb->numpst;
+ else
+ printf("Overriding number of pst :%d\n", numpst);
+
+ for (i = 0; i < numpst; i++) {
+ pst = (struct pst_header*) p;
+
+ if (relevant != 0) {
+ if (relevant!= pst->cpuid)
+ goto next_one;
+ }
+
+ printf(" PST %d cpuid %.3x fsb %hhu mfid %hhx svid %hhx numberstates %hhu\n",
+ i+1,
+ pst->cpuid,
+ pst->fsb,
+ pst->maxfid,
+ pst->startvid,
+ pst->numpstates);
+
+ fsb = pst->fsb;
+ decode_pst(p + sizeof(struct pst_header), pst->numpstates);
+
+next_one:
+ p += sizeof(struct pst_header) + 2*pst->numpstates;
+ }
+
+}
+
+static struct option info_opts[] = {
+ {"numpst", no_argument, NULL, 'n'},
+};
+
+void print_help(void)
+{
+ printf ("Usage: dump_psb [options]\n");
+ printf ("Options:\n");
+ printf (" -n, --numpst Set number of PST tables to scan\n");
+ printf (" -r, --relevant Only display PSTs relevant to cpuid N\n");
+}
+
+int
+main(int argc, char *argv[])
+{
+ int fd;
+ int numpst=-1;
+ int ret=0, cont=1;
+ char *mem = NULL;
+ char *p;
+
+ do {
+ ret = getopt_long(argc, argv, "hr:n:", info_opts, NULL);
+ switch (ret){
+ case '?':
+ case 'h':
+ print_help();
+ cont = 0;
+ break;
+ case 'r':
+ relevant = strtol(optarg, NULL, 16);
+ break;
+ case 'n':
+ numpst = strtol(optarg, NULL, 10);
+ break;
+ case -1:
+ cont = 0;
+ break;
+ }
+
+ } while(cont);
+
+ fd = open("/dev/mem", O_RDONLY);
+ if (fd < 0) {
+ printf ("Couldn't open /dev/mem. Are you root?\n");
+ exit(1);
+ }
+
+ mem = mmap(mem, 0x100000 - 0xc0000, PROT_READ, MAP_SHARED, fd, 0xc0000);
+ close(fd);
+
+ for (p = mem; p - mem < LEN; p+=16) {
+ if (memcmp(p, "AMDK7PNOW!", 10) == 0) {
+ decode_psb(p, numpst);
+ break;
+ }
+ }
+
+ munmap(mem, LEN);
+ return 0;
+}
diff --git a/tools/power/cpupower/debug/i386/intel_gsic.c b/tools/power/cpupower/debug/i386/intel_gsic.c
new file mode 100644
index 000000000..befd837f0
--- /dev/null
+++ b/tools/power/cpupower/debug/i386/intel_gsic.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * (C) 2003 Bruno Ducrot
+ * (C) 2004 Dominik Brodowski <linux@dominikbrodowski.de>
+ *
+ * Based on code found in
+ * linux/include/asm-i386/ist.h and linux/arch/i386/kernel/setup.c
+ * and originally developed by Andy Grover <andrew.grover@intel.com>
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <lrmi.h>
+
+int main (void)
+{
+ struct LRMI_regs r;
+ int retval;
+
+ if (!LRMI_init())
+ return 0;
+
+ memset(&r, 0, sizeof(r));
+
+ r.eax = 0x0000E980;
+ r.edx = 0x47534943;
+
+ retval = LRMI_int(0x15, &r);
+
+ if (!retval) {
+ printf("Failed!\n");
+ return 0;
+ }
+ if (r.eax == 0x47534943) {
+ printf("BIOS supports GSIC call:\n");
+ printf("\tsignature: %c%c%c%c\n",
+ (r.eax >> 24) & 0xff,
+ (r.eax >> 16) & 0xff,
+ (r.eax >> 8) & 0xff,
+ (r.eax) & 0xff);
+ printf("\tcommand port = 0x%.4x\n",
+ r.ebx & 0xffff);
+ printf("\tcommand = 0x%.4x\n",
+ (r.ebx >> 16) & 0xffff);
+ printf("\tevent port = 0x%.8x\n", r.ecx);
+ printf("\tflags = 0x%.8x\n", r.edx);
+ if (((r.ebx >> 16) & 0xffff) != 0x82) {
+ printf("non-default command value. If speedstep-smi "
+ "doesn't work out of the box,\nyou may want to "
+ "try out the default value by passing "
+ "smi_cmd=0x82 to the module\n ON YOUR OWN "
+ "RISK.\n");
+ }
+ if ((r.ebx & 0xffff) != 0xb2) {
+ printf("non-default command port. If speedstep-smi "
+ "doesn't work out of the box,\nyou may want to "
+ "try out the default value by passing "
+ "smi_port=0x82 to the module\n ON YOUR OWN "
+ "RISK.\n");
+ }
+ } else {
+ printf("BIOS DOES NOT support GSIC call. Dumping registers anyway:\n");
+ printf("eax = 0x%.8x\n", r.eax);
+ printf("ebx = 0x%.8x\n", r.ebx);
+ printf("ecx = 0x%.8x\n", r.ecx);
+ printf("edx = 0x%.8x\n", r.edx);
+ printf("Note also that some BIOS do not support the initial "
+ "GSIC call, but the newer\nspeedstep-smi driver may "
+ "work.\nFor this, you need to pass some arguments to "
+ "the speedstep-smi driver:\n");
+ printf("\tsmi_cmd=0x?? smi_port=0x?? smi_sig=1\n");
+ printf("\nUnfortunately, you have to know what exactly are "
+ "smi_cmd and smi_port, and this\nis system "
+ "dependent.\n");
+ }
+ return 1;
+}
diff --git a/tools/power/cpupower/debug/i386/powernow-k8-decode.c b/tools/power/cpupower/debug/i386/powernow-k8-decode.c
new file mode 100644
index 000000000..735dca1e2
--- /dev/null
+++ b/tools/power/cpupower/debug/i386/powernow-k8-decode.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
+ *
+ * Based on code found in
+ * linux/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+ * and originally developed by Paul Devriendt
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define MCPU 32
+
+#define MSR_FIDVID_STATUS 0xc0010042
+
+#define MSR_S_HI_CURRENT_VID 0x0000001f
+#define MSR_S_LO_CURRENT_FID 0x0000003f
+
+static int get_fidvid(uint32_t cpu, uint32_t *fid, uint32_t *vid)
+{
+ int err = 1;
+ uint64_t msr = 0;
+ int fd;
+ char file[20];
+
+ if (cpu > MCPU)
+ goto out;
+
+ sprintf(file, "/dev/cpu/%d/msr", cpu);
+
+ fd = open(file, O_RDONLY);
+ if (fd < 0)
+ goto out;
+ lseek(fd, MSR_FIDVID_STATUS, SEEK_CUR);
+ if (read(fd, &msr, 8) != 8)
+ goto err1;
+
+ *fid = ((uint32_t )(msr & 0xffffffffull)) & MSR_S_LO_CURRENT_FID;
+ *vid = ((uint32_t )(msr>>32 & 0xffffffffull)) & MSR_S_HI_CURRENT_VID;
+ err = 0;
+err1:
+ close(fd);
+out:
+ return err;
+}
+
+
+/* Return a frequency in MHz, given an input fid */
+static uint32_t find_freq_from_fid(uint32_t fid)
+{
+ return 800 + (fid * 100);
+}
+
+/* Return a voltage in miliVolts, given an input vid */
+static uint32_t find_millivolts_from_vid(uint32_t vid)
+{
+ return 1550-vid*25;
+}
+
+int main (int argc, char *argv[])
+{
+ int err;
+ int cpu;
+ uint32_t fid, vid;
+
+ if (argc < 2)
+ cpu = 0;
+ else
+ cpu = strtoul(argv[1], NULL, 0);
+
+ err = get_fidvid(cpu, &fid, &vid);
+
+ if (err) {
+ printf("can't get fid, vid from MSR\n");
+ printf("Possible trouble: you don't run a powernow-k8 capable cpu\n");
+ printf("or you are not root, or the msr driver is not present\n");
+ exit(1);
+ }
+
+
+ printf("cpu %d currently at %d MHz and %d mV\n",
+ cpu,
+ find_freq_from_fid(fid),
+ find_millivolts_from_vid(vid));
+
+ return 0;
+}
diff --git a/tools/power/cpupower/debug/kernel/Makefile b/tools/power/cpupower/debug/kernel/Makefile
new file mode 100644
index 000000000..7b5c43684
--- /dev/null
+++ b/tools/power/cpupower/debug/kernel/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-m :=
+
+KDIR := /lib/modules/$(shell uname -r)/build
+KMISC := /lib/modules/$(shell uname -r)/cpufrequtils/
+
+ifeq ("$(CONFIG_X86_TSC)", "y")
+ obj-m += cpufreq-test_tsc.o
+endif
+
+default:
+ $(MAKE) -C $(KDIR) M=$(CURDIR)
+
+clean:
+ - rm -rf *.o *.ko .*.cmd .*.mod.* *.mod.c
+ - rm -rf Module.symvers modules.order
+
+install: default
+ install -d $(KMISC)
+ install -m 644 -c *.ko $(KMISC)
+ /sbin/depmod -a
+
+all: default
diff --git a/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
new file mode 100644
index 000000000..e364b170b
--- /dev/null
+++ b/tools/power/cpupower/debug/kernel/cpufreq-test_tsc.c
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * test module to check whether the TSC-based delay routine continues
+ * to work properly after cpufreq transitions. Needs ACPI to work
+ * properly.
+ *
+ * Based partly on the Power Management Timer (PMTMR) code to be found
+ * in arch/i386/kernel/timers/timer_pm.c on recent 2.6. kernels, especially
+ * code written by John Stultz. The read_pmtmr function was copied verbatim
+ * from that file.
+ *
+ * (C) 2004 Dominik Brodowski
+ *
+ * To use:
+ * 1.) pass clock=tsc to the kernel on your bootloader
+ * 2.) modprobe this module (it'll fail)
+ * 3.) change CPU frequency
+ * 4.) modprobe this module again
+ * 5.) if the third value, "diff_pmtmr", changes between 2. and 4., the
+ * TSC-based delay routine on the Linux kernel does not correctly
+ * handle the cpufreq transition. Please report this to
+ * linux-pm@vger.kernel.org
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/acpi.h>
+#include <asm/io.h>
+
+static int pm_tmr_ioport = 0;
+
+/*helper function to safely read acpi pm timesource*/
+static u32 read_pmtmr(void)
+{
+ u32 v1=0,v2=0,v3=0;
+ /* It has been reported that because of various broken
+ * chipsets (ICH4, PIIX4 and PIIX4E) where the ACPI PM time
+ * source is not latched, so you must read it multiple
+ * times to insure a safe value is read.
+ */
+ do {
+ v1 = inl(pm_tmr_ioport);
+ v2 = inl(pm_tmr_ioport);
+ v3 = inl(pm_tmr_ioport);
+ } while ((v1 > v2 && v1 < v3) || (v2 > v3 && v2 < v1)
+ || (v3 > v1 && v3 < v2));
+
+ /* mask the output to 24 bits */
+ return (v2 & 0xFFFFFF);
+}
+
+static int __init cpufreq_test_tsc(void)
+{
+ u32 now, then, diff;
+ u64 now_tsc, then_tsc, diff_tsc;
+ int i;
+
+ /* the following code snipped is copied from arch/x86/kernel/acpi/boot.c
+ of Linux v2.6.25. */
+
+ /* detect the location of the ACPI PM Timer */
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
+ /* FADT rev. 2 */
+ if (acpi_gbl_FADT.xpm_timer_block.space_id !=
+ ACPI_ADR_SPACE_SYSTEM_IO)
+ return 0;
+
+ pm_tmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
+ /*
+ * "X" fields are optional extensions to the original V1.0
+ * fields, so we must selectively expand V1.0 fields if the
+ * corresponding X field is zero.
+ */
+ if (!pm_tmr_ioport)
+ pm_tmr_ioport = acpi_gbl_FADT.pm_timer_block;
+ } else {
+ /* FADT rev. 1 */
+ pm_tmr_ioport = acpi_gbl_FADT.pm_timer_block;
+ }
+
+ printk(KERN_DEBUG "start--> \n");
+ then = read_pmtmr();
+ then_tsc = rdtsc();
+ for (i=0;i<20;i++) {
+ mdelay(100);
+ now = read_pmtmr();
+ now_tsc = rdtsc();
+ diff = (now - then) & 0xFFFFFF;
+ diff_tsc = now_tsc - then_tsc;
+ printk(KERN_DEBUG "t1: %08u t2: %08u diff_pmtmr: %08u diff_tsc: %016llu\n", then, now, diff, diff_tsc);
+ then = now;
+ then_tsc = now_tsc;
+ }
+ printk(KERN_DEBUG "<-- end \n");
+ return -ENODEV;
+}
+
+static void __exit cpufreq_none(void)
+{
+ return;
+}
+
+module_init(cpufreq_test_tsc)
+module_exit(cpufreq_none)
+
+
+MODULE_AUTHOR("Dominik Brodowski");
+MODULE_DESCRIPTION("Verify the TSC cpufreq notifier working correctly -- needs ACPI-enabled system");
+MODULE_LICENSE ("GPL");
diff --git a/tools/power/cpupower/debug/x86_64/Makefile b/tools/power/cpupower/debug/x86_64/Makefile
new file mode 100644
index 000000000..b1b6c4364
--- /dev/null
+++ b/tools/power/cpupower/debug/x86_64/Makefile
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+OUTPUT=./
+ifeq ("$(origin O)", "command line")
+ OUTPUT := $(O)/
+endif
+
+DESTDIR =
+bindir = /usr/bin
+
+INSTALL = /usr/bin/install
+
+
+default: all
+
+$(OUTPUT)centrino-decode: ../i386/centrino-decode.c
+ $(CC) $(CFLAGS) -o $@ $(LDFLAGS) $<
+
+$(OUTPUT)powernow-k8-decode: ../i386/powernow-k8-decode.c
+ $(CC) $(CFLAGS) -o $@ $(LDFLAGS) $<
+
+all: $(OUTPUT)centrino-decode $(OUTPUT)powernow-k8-decode
+
+clean:
+ rm -rf $(OUTPUT)centrino-decode $(OUTPUT)powernow-k8-decode
+
+install:
+ $(INSTALL) -d $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)centrino-decode $(DESTDIR)${bindir}
+ $(INSTALL) $(OUTPUT)powernow-k8-decode $(DESTDIR)${bindir}
+
+.PHONY: all default clean install