elementary · stsdc · Jan 27, 2026 · Jan 23, 2026 · Jan 23, 2026 · Jan 23, 2026
diff --git a/src/Resources/ARMPartDecoder.vala b/src/Resources/ARMPartDecoder.vala
@@ -0,0 +1,310 @@
+/*
+* Copyright (c) 2026 elementary LLC. (https://elementary.io)
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* General Public License for more details.
+*
+* You should have received a copy of the GNU General Public
+* License along with this program; if not, write to the
+* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+* Boston, MA 02110-1301 USA
+*/
+
+public class Monitor.ARMPartDecoder {
+    // Vala port of https://github.com/util-linux/util-linux/blob/2da5c904e18fdcffd2b252d641e6f76374c7b406/sys-utils/lscpu-arm.c
+    struct ARMPart {
+        int id;
+        string name;
+    }
+
+    struct ARMImplementer {
+        int id;
+        ARMPart[] parts;
+        string name;
+    }
+
+    const ARMPart ARM_PARTS[] = {
+        { 0x810, "ARM810" },
+        { 0x920, "ARM920" },
+        { 0x922, "ARM922" },
+        { 0x926, "ARM926" },
+        { 0x940, "ARM940" },
+        { 0x946, "ARM946" },
+        { 0x966, "ARM966" },
+        { 0xa20, "ARM1020" },
+        { 0xa22, "ARM1022" },
+        { 0xa26, "ARM1026" },
+        { 0xb02, "ARM11 MPCore" },
+        { 0xb36, "ARM1136" },
+        { 0xb56, "ARM1156" },
+        { 0xb76, "ARM1176" },
+        { 0xc05, "Cortex-A5" },
+        { 0xc07, "Cortex-A7" },
+        { 0xc08, "Cortex-A8" },
+        { 0xc09, "Cortex-A9" },
+        { 0xc0d, "Cortex-A17" }, /* Originally A12 */
+        { 0xc0f, "Cortex-A15" },
+        { 0xc0e, "Cortex-A17" },
+        { 0xc14, "Cortex-R4" },
+        { 0xc15, "Cortex-R5" },
+        { 0xc17, "Cortex-R7" },
+        { 0xc18, "Cortex-R8" },
+        { 0xc20, "Cortex-M0" },
+        { 0xc21, "Cortex-M1" },
+        { 0xc23, "Cortex-M3" },
+        { 0xc24, "Cortex-M4" },
+        { 0xc27, "Cortex-M7" },
+        { 0xc60, "Cortex-M0+" },
+        { 0xd01, "Cortex-A32" },
+        { 0xd02, "Cortex-A34" },
+        { 0xd03, "Cortex-A53" },
+        { 0xd04, "Cortex-A35" },
+        { 0xd05, "Cortex-A55" },
+        { 0xd06, "Cortex-A65" },
+        { 0xd07, "Cortex-A57" },
+        { 0xd08, "Cortex-A72" },
+        { 0xd09, "Cortex-A73" },
+        { 0xd0a, "Cortex-A75" },
+        { 0xd0b, "Cortex-A76" },
+        { 0xd0c, "Neoverse-N1" },
+        { 0xd0d, "Cortex-A77" },
+        { 0xd0e, "Cortex-A76AE" },
+        { 0xd13, "Cortex-R52" },
+        { 0xd15, "Cortex-R82" },
+        { 0xd16, "Cortex-R52+" },
+        { 0xd20, "Cortex-M23" },
+        { 0xd21, "Cortex-M33" },
+        { 0xd22, "Cortex-M55" },
+        { 0xd23, "Cortex-M85" },
+        { 0xd40, "Neoverse-V1" },
+        { 0xd41, "Cortex-A78" },
+        { 0xd42, "Cortex-A78AE" },
+        { 0xd43, "Cortex-A65AE" },
+        { 0xd44, "Cortex-X1" },
+        { 0xd46, "Cortex-A510" },
+        { 0xd47, "Cortex-A710" },
+        { 0xd48, "Cortex-X2" },
+        { 0xd49, "Neoverse-N2" },
+        { 0xd4a, "Neoverse-E1" },
+        { 0xd4b, "Cortex-A78C" },
+        { 0xd4c, "Cortex-X1C" },
+        { 0xd4d, "Cortex-A715" },
+        { 0xd4e, "Cortex-X3" },
+        { 0xd4f, "Neoverse-V2" },
+        { 0xd80, "Cortex-A520" },
+        { 0xd81, "Cortex-A720" },
+        { 0xd82, "Cortex-X4" },
+    };
+
+    const ARMPart BROADCOM_PARTS[] = {
+        { 0x0f, "Brahma-B15" },
+        { 0x100, "Brahma-B53" },
+        { 0x516, "ThunderX2" },
+    };
+
+    const ARMPart DEC_PARTS[] = {
+        { 0xa10, "SA110" },
+        { 0xa11, "SA1100" },
+    };
+
+    const ARMPart CAVIUM_PARTS[] = {
+        { 0x0a0, "ThunderX" },
+        { 0x0a1, "ThunderX-88XX" },
+        { 0x0a2, "ThunderX-81XX" },
+        { 0x0a3, "ThunderX-83XX" },
+        { 0x0af, "ThunderX2-99xx" },
+        { 0x0b0, "OcteonTX2" },
+        { 0x0b1, "OcteonTX2-98XX" },
+        { 0x0b2, "OcteonTX2-96XX" },
+        { 0x0b3, "OcteonTX2-95XX" },
+        { 0x0b4, "OcteonTX2-95XXN" },
+        { 0x0b5, "OcteonTX2-95XXMM" },
+        { 0x0b6, "OcteonTX2-95XXO" },
+        { 0x0b8, "ThunderX3-T110" },
+    };
+
+    const ARMPart APM_PARTS[] = {
+        { 0x000, "X-Gene" },
+    };
+
+    const ARMPart QUALCOMM_PARTS[] = {
+        { 0x00f, "Scorpion" },
+        { 0x02d, "Scorpion" },
+        { 0x04d, "Krait" },
+        { 0x06f, "Krait" },
+        { 0x201, "Kryo" },
+        { 0x205, "Kryo" },
+        { 0x211, "Kryo" },
+        { 0x800, "Falkor-V1/Kryo" },
+        { 0x801, "Kryo-V2" },
+        { 0x802, "Kryo-3XX-Gold" },
+        { 0x803, "Kryo-3XX-Silver" },
+        { 0x804, "Kryo-4XX-Gold" },
+        { 0x805, "Kryo-4XX-Silver" },
+        { 0xc00, "Falkor" },
+        { 0xc01, "Saphira" },
+    };
+
+    const ARMPart SAMSUNG_PARTS[] = {
+        { 0x001, "exynos-m1" },
+        { 0x002, "exynos-m3" },
+        { 0x003, "exynos-m4" },
+        { 0x004, "exynos-m5" },
+    };
+
+    const ARMPart NVIDIA_PARTS[] = {
+        { 0x000, "Denver" },
+        { 0x003, "Denver 2" },
+        { 0x004, "Carmel" },
+    };
+
+    const ARMPart MARVELL_PARTS[] = {
+        { 0x131, "Feroceon-88FR131" },
+        { 0x581, "PJ4/PJ4b" },
+        { 0x584, "PJ4B-MP" },
+    };
+
+    const ARMPart APPLE_PARTS[] = {
+        { 0x000, "Swift" },
+        { 0x001, "Cyclone" },
+        { 0x002, "Typhoon" },
+        { 0x003, "Typhoon/Capri" },
+        { 0x004, "Twister" },
+        { 0x005, "Twister/Elba/Malta" },
+        { 0x006, "Hurricane" },
+        { 0x007, "Hurricane/Myst" },
+        { 0x008, "Monsoon" },
+        { 0x009, "Mistral" },
+        { 0x00b, "Vortex" },
+        { 0x00c, "Tempest" },
+        { 0x00f, "Tempest-M9" },
+        { 0x010, "Vortex/Aruba" },
+        { 0x011, "Tempest/Aruba" },
+        { 0x012, "Lightning" },
+        { 0x013, "Thunder" },
+        { 0x020, "Icestorm-A14" },
+        { 0x021, "Firestorm-A14" },
+        { 0x022, "Icestorm-M1" },
+        { 0x023, "Firestorm-M1" },
+        { 0x024, "Icestorm-M1-Pro" },
+        { 0x025, "Firestorm-M1-Pro" },
+        { 0x026, "Thunder-M10" },
+        { 0x028, "Icestorm-M1-Max" },
+        { 0x029, "Firestorm-M1-Max" },
+        { 0x030, "Blizzard-A15" },
+        { 0x031, "Avalanche-A15" },
+        { 0x032, "Blizzard-M2" },
+        { 0x033, "Avalanche-M2" },
+        { 0x034, "Blizzard-M2-Pro" },
+        { 0x035, "Avalanche-M2-Pro" },
+        { 0x036, "Sawtooth-A16" },
+        { 0x037, "Everest-A16" },
+        { 0x038, "Blizzard-M2-Max" },
+        { 0x039, "Avalanche-M2-Max" },
+    };
+
+    const ARMPart FARADAY_PARTS[] = {
+        { 0x526, "FA526" },
+        { 0x626, "FA626" },
+    };
+
+    const ARMPart INTEL_PARTS[] = {
+        { 0x200, "i80200" },
+        { 0x210, "PXA250A" },
+        { 0x212, "PXA210A" },
+        { 0x242, "i80321-400" },
+        { 0x243, "i80321-600" },
+        { 0x290, "PXA250B/PXA26x" },
+        { 0x292, "PXA210B" },
+        { 0x2c2, "i80321-400-B0" },
+        { 0x2c3, "i80321-600-B0" },
+        { 0x2d0, "PXA250C/PXA255/PXA26x" },
+        { 0x2d2, "PXA210C" },
+        { 0x411, "PXA27x" },
+        { 0x41c, "IPX425-533" },
+        { 0x41d, "IPX425-400" },
+        { 0x41f, "IPX425-266" },
+        { 0x682, "PXA32x" },
+        { 0x683, "PXA930/PXA935" },
+        { 0x688, "PXA30x" },
+        { 0x689, "PXA31x" },
+        { 0xb11, "SA1110" },
+        { 0xc12, "IPX1200" },
+    };
+
+    const ARMPart FUJITSU_PARTS[] = {
+        { 0x001, "A64FX" },
+    };
+
+    const ARMPart HISILICON_PARTS[] = {
+        { 0xd01, "Kunpeng-920" }, /* aka tsv110 */
+        { 0xd40, "Cortex-A76" }, /* HiSilicon uses this ID though advertises A76 */
+    };
+
+    const ARMPart AMPERE_PARTS[] = {
+        { 0xac3, "Ampere-1" },
+        { 0xac4, "Ampere-1a" },
+    };
+
+    const ARMPart PHYTIUM_PARTS[] = {
+        { 0x303, "FTC310" },
+        { 0x660, "FTC660" },
+        { 0x661, "FTC661" },
+        { 0x662, "FTC662" },
+        { 0x663, "FTC663" },
+        { 0x664, "FTC664" },
+        { 0x862, "FTC862" },
+    };
+
+    const ARMImplementer ARM_IMPLEMENTERS[] = {
+        { 0x41, ARM_PARTS, "ARM" },
+        { 0x42, BROADCOM_PARTS, "Broadcom" },
+        { 0x43, CAVIUM_PARTS, "Cavium" },
+        { 0x44, DEC_PARTS, "DEC" },
+        { 0x46, FUJITSU_PARTS, "FUJITSU" },
+        { 0x48, HISILICON_PARTS, "HiSilicon" },
+        { 0x4e, NVIDIA_PARTS, "NVIDIA" },
+        { 0x50, APM_PARTS, "APM" },
+        { 0x51, QUALCOMM_PARTS, "Qualcomm" },
+        { 0x53, SAMSUNG_PARTS, "Samsung" },
+        { 0x56, MARVELL_PARTS, "Marvell" },
+        { 0x61, APPLE_PARTS, "Apple" },
+        { 0x66, FARADAY_PARTS, "Faraday" },
+        { 0x69, INTEL_PARTS, "Intel" },
+        { 0x70, PHYTIUM_PARTS, "Phytium" },
+        { 0xc0, AMPERE_PARTS, "Ampere" },
+    };
+
+    public static string? decode_arm_model (uint? cpu_implementer, uint? cpu_part) {
+
+        string? result = null;
+
+        if (cpu_implementer == null || cpu_part == null) {
+            return result;
+        }
+
+        if (cpu_implementer == 0 || cpu_part == 0) {
+            return result;
+        }
+
+        foreach (var implementer in ARM_IMPLEMENTERS) {
+            if (cpu_implementer == implementer.id) {
+                result = implementer.name + " ";
+                foreach (var part in implementer.parts) {
+                    if (cpu_part == part.id) {
+                        result += part.name;
+                    }
+                }
+            }
+        }
+
+        return result;
+    }
+}
diff --git a/src/Resources/CPU.vala b/src/Resources/CPU.vala
@@ -1,13 +1,20 @@
 /*
  * SPDX-License-Identifier: GPL-3.0-or-later
- * SPDX-FileCopyrightText: 2025 elementary, Inc. (https://elementary.io)
+ * SPDX-FileCopyrightText: 2026 elementary, Inc. (https://elementary.io)
  */
 
 public class Monitor.CPU : Object {
     private float last_used;
     private float last_total;
     private float load;
 
+    // ARM specific fields
+    public uint ? implementer;
+    public uint ? architecture;
+    public uint ? variant;
+    public uint ? part;
+    public uint ? revision;
+
     public string ? model_name;
     public string ? model;
     public string ? family;
@@ -68,9 +75,11 @@ public class Monitor.CPU : Object {
         last_used = 0;
         last_total = 0;
 
+        parse_cpuinfo ();
+
         model_name = get_cpu_info ();
 
-        parse_cpuinfo ();
+        debug ("CPU name: %s", model_name);
 
         debug ("Number of cores: %d", (int) get_num_processors ());
         for (int i = 0; i < (int) get_num_processors (); i++) {
@@ -192,14 +201,21 @@ public class Monitor.CPU : Object {
         family = values["cpu family"];
         microcode = values["microcode"];
         cache_size = values["cache size"];
-        parse_flags (values["flags"], features, DBDIR + "/cpu_features.csv");
-        bogomips = values["bogomips"];
-        parse_flags (values["bugs"], bugs, DBDIR + "/cpu_bugs.csv");
+        parse_flags (values["flags"] ?? values["Features"], features, DBDIR + "/cpu_features.csv");
+        bogomips = values["bogomips"] ?? values["BogoMIPS"];
+        parse_flags (values["bugs"] ?? "", bugs, DBDIR + "/cpu_bugs.csv");
         address_sizes = values["address sizes"];
 
-        // values.foreach ((key, value) => {
-        // debug("%s: %s\n", key, value);
-        // });
+        // long.parse supports 0x format hex strings
+        implementer = (int)long.parse (values["CPU implementer"]);
+        architecture = (int)long.parse (values["CPU architecture"]);
+        variant = (int)long.parse (values["CPU variant"]);
+        part = (int)long.parse (values["CPU part"]);
+        revision = (int)long.parse (values["CPU revision"]);
+
+        //  values.foreach ((key, value) => {
+        //  debug("%s: %s\n", key, value);
+        //  });
     }
 
     private void parse_flags (string _flags, Gee.HashMap<string, string> flags, string path) {
@@ -264,6 +280,14 @@ public class Monitor.CPU : Object {
                 }
             }
 
+            if (model == null) {
+                debug ("Try ARM decoding for CPU %d", i);
+                model = ARMPartDecoder.decode_arm_model (implementer, part);
+                if (model == null) {
+                    continue;
+                }
+            }
+
             string ? core_count = values.lookup ("cpu cores");
             if (core_count != null) {
                 counts.@set (model, int.parse (core_count));

diff --git a/src/meson.build b/src/meson.build
@@ -52,6 +52,7 @@ source_app_files = [
     'Resources/CPU.vala',
     'Resources/CPUCache.vala',
     'Resources/Core.vala',
+    'Resources/ARMPartDecoder.vala',
     'Resources/Memory.vala',
     'Resources/Swap.vala',
     'Resources/Network.vala',