misc/158160: coretemp reports incorrect CPU temperature on Atom D525

Paul Donovan freebsd at donovansbrain.co.uk
Wed Jun 22 13:00:23 UTC 2011 

>Number:         158160
>Category:       misc
>Synopsis:       coretemp reports incorrect CPU temperature on Atom D525
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 22 13:00:23 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Paul Donovan
>Release:        FreeBSD 8.2-RELEASE-p2
>Organization:
>Environment:
FreeBSD freenas.local 8.2-RELEASE-p2 FreeBSD 8.2-RELEASE-p2 #0: Sat Jun 18 18:34:18 EST 2011     root at freebsd.local.:/usr/home/pauld/freenas/trunk/obj.amd64/usr/home/pauld/freenas/trunk/FreeBSD/src/sys/FREENAS.amd64  amd64

>Description:
The coretemp kernel module reports clearly incorrect temperature readings for the Atom D525 CPU in my machine.

# sysctl -a | grep temperature
dev.cpu.0.temperature: 6.0C
dev.cpu.1.temperature: 6.0C
dev.cpu.2.temperature: 9.0C
dev.cpu.3.temperature: 9.0C

mbmon seems to report valid values:

# mbmon
Temp.= 38.0, 28.5, 29.0; Rot.= 1081,    0,    0
Vcore = 2.40, 3.18; Volt. = 3.36, 5.64, 14.29,  -2.57,  2.34

The BIOS screen shows reasonable values as well (around 21C and 28C). The motherboard is an Intel D525MW and the BIOS is version MWPNT10N.86A.0083.2011.0524.1600. An earlier BIOS version showed the same results.

I have tested on two builds of FreeBSD 8.2, one from FreeNAS 8.01beta2 and one other build of FreeBSD 8.2.

I have attached the full output from dmesg, and here's an excerpt:

CPU: Intel(R) Atom(TM) CPU D525   @ 1.80GHz (1821.68-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x106ca  Family = 6  Model = 1c  Stepping = 10
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0x40e31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM,MOVBE>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant
real memory  = 4294967296 (4096 MB)
avail memory = 4007641088 (3821 MB)
ACPI APIC Table: <INTEL  D525MW  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 HTT threads
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP/HT): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP/HT): APIC ID:  3

I have read reports from owners of different Atom D525 boards where the correct values are reported by coretemp, for example the Zotac NM10-DTX WiFi (NM10-F-E).

>How-To-Repeat:

>Fix:


Patch attached with submission follows:

Copyright (c) 1992-2011 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 8.2-RELEASE-p2 #0: Sat Jun 18 18:34:18 EST 2011
    root at freebsd.local.:/usr/home/pauld/freenas/trunk/obj.amd64/usr/home/pauld/freenas/trunk/FreeBSD/src/sys/FREENAS.amd64 amd64
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Atom(TM) CPU D525   @ 1.80GHz (1821.68-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x106ca  Family = 6  Model = 1c  Stepping = 10
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0x40e31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM,MOVBE>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant
real memory  = 4294967296 (4096 MB)
avail memory = 4007641088 (3821 MB)
ACPI APIC Table: <INTEL  D525MW  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 HTT threads
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP/HT): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP/HT): APIC ID:  3
ioapic0: Changing APIC ID to 8
ioapic0 <Version 2.0> irqs 0-23 on motherboard
lapic0: Forcing LINT1 to edge trigger
netsmb_dev: loaded
kbd1 at kbdmux0
cryptosoft0: <software crypto> on motherboard
acpi0: <INTEL D525MW> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
acpi_button0: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0x20c0-0x20c7 mem 0xf0200000-0xf027ffff,0xe0000000-0xefffffff,0xf0100000-0xf01fffff irq 16 at device 2.0 on pci0
agp0: <Intel Pineview SVGA controller> on vgapci0
agp0: detected 8188k stolen memory
agp0: aperture size is 256M
pci0: <multimedia, HDA> at device 27.0 (no driver attached)
pcib1: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci1: <ACPI PCI bus> on pcib1
re0: <RealTek 8168/8111 B/C/CP/D/DP/E PCIe Gigabit Ethernet> port 0x1000-0x10ff mem 0xf0004000-0xf0004fff,0xf0000000-0xf0003fff irq 16 at device 0.0 on pci1
re0: Using 1 MSI-X message
re0: Chip rev. 0x2c000000
re0: MAC rev. 0x00000000
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S/8211B media interface> PHY 1 on miibus0
rgephy0:  10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
re0: Ethernet address: 70:71:bc:bc:40:af
re0: [ITHREAD]
pcib2: <ACPI PCI-PCI bridge> at device 28.1 on pci0
pci2: <ACPI PCI bus> on pcib2
pcib3: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pci3: <ACPI PCI bus> on pcib3
pcib4: <ACPI PCI-PCI bridge> at device 28.3 on pci0
pci4: <ACPI PCI bus> on pcib4
uhci0: <Intel 82801G (ICH7) USB controller USB-A> port 0x2080-0x209f irq 23 at device 29.0 on pci0
uhci0: [ITHREAD]
usbus0: <Intel 82801G (ICH7) USB controller USB-A> on uhci0
uhci1: <Intel 82801G (ICH7) USB controller USB-B> port 0x2060-0x207f irq 19 at device 29.1 on pci0
uhci1: [ITHREAD]
usbus1: <Intel 82801G (ICH7) USB controller USB-B> on uhci1
uhci2: <Intel 82801G (ICH7) USB controller USB-C> port 0x2040-0x205f irq 18 at device 29.2 on pci0
uhci2: [ITHREAD]
usbus2: <Intel 82801G (ICH7) USB controller USB-C> on uhci2
uhci3: <Intel 82801G (ICH7) USB controller USB-D> port 0x2020-0x203f irq 16 at device 29.3 on pci0
uhci3: [ITHREAD]
usbus3: <Intel 82801G (ICH7) USB controller USB-D> on uhci3
ehci0: <Intel 82801GB/R (ICH7) USB 2.0 controller> mem 0xf0284400-0xf02847ff irq 23 at device 29.7 on pci0
ehci0: [ITHREAD]
usbus4: EHCI version 1.0
usbus4: <Intel 82801GB/R (ICH7) USB 2.0 controller> on ehci0
pcib5: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci5: <ACPI PCI bus> on pcib5
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
ahci0: <Intel ICH7 AHCI SATA controller> port 0x20b8-0x20bf,0x20cc-0x20cf,0x20b0-0x20b7,0x20c8-0x20cb,0x20a0-0x20af mem 0xf0284000-0xf02843ff irq 18 at device 31.2 on pci0
ahci0: [ITHREAD]
ahci0: AHCI v1.10 with 4 3Gbps ports, Port Multiplier not supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich0: [ITHREAD]
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich1: [ITHREAD]
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed03fff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 900
atrtc0: <AT realtime clock> port 0x70-0x71,0x74-0x77 irq 8 on acpi0
orm0: <ISA Option ROM> at iomem 0xce000-0xcefff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
ppc0: cannot reserve I/O port range
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
coretemp0: Can not get Tj(target) from your CPU, using 100C.
p4tcc0: <CPU Frequency Thermal Control> on cpu0
coretemp1: <CPU On-Die Thermal Sensors> on cpu1
coretemp1: Can not get Tj(target) from your CPU, using 100C.
p4tcc1: <CPU Frequency Thermal Control> on cpu1
coretemp2: <CPU On-Die Thermal Sensors> on cpu2
coretemp2: Can not get Tj(target) from your CPU, using 100C.
p4tcc2: <CPU Frequency Thermal Control> on cpu2
coretemp3: <CPU On-Die Thermal Sensors> on cpu3
coretemp3: Can not get Tj(target) from your CPU, using 100C.
p4tcc3: <CPU Frequency Thermal Control> on cpu3
ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
            to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
ZFS filesystem version 4
ZFS storage pool version 15
RTC BIOS diagnostic error 80<clock_battery>
Timecounters tick every 1.000 msec
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 12Mbps Full Speed USB v1.0
usbus3: 12Mbps Full Speed USB v1.0
usbus4: 480Mbps High Speed USB v2.0
ugen0.1: <Intel> at usbus0
uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <Intel> at usbus1
uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen2.1: <Intel> at usbus2
uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen3.1: <Intel> at usbus3
uhub3: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus3
ugen4.1: <Intel> at usbus4
uhub4: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus4
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
uhub2: 2 ports with 2 removable, self powered
uhub3: 2 ports with 2 removable, self powered
uhub4: 8 ports with 8 removable, self powered
ugen4.2: <ATP Electronics> at usbus4
umass0: <ATP Electronics ATP IG eUSB SSD, class 0/0, rev 2.00/11.00, addr 2> on usbus4
ugen4.3: <Imation> at usbus4
umass1: <Imation Imation USB, class 0/0, rev 2.00/1.10, addr 3> on usbus4
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
da0: <ATP ATP IG eUSB SSD 1100> Fixed Direct Access SCSI-0 device 
da0: 40.000MB/s transfers
da0: 3920MB (8028160 512 byte sectors: 255H 63S/T 499C)
da1 at umass-sim1 bus 1 scbus3 target 0 lun 0
da1: <Imation Imation USB PMAP> Removable Direct Access SCSI-0 device 
da1: 40.000MB/s transfers
da1: 1961MB (4016128 512 byte sectors: 255H 63S/T 249C)
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <WDC WD20EARS-00MVWB0 51.0AB51> ATA-8 SATA 2.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <WDC WD20EARS-00MVWB0 51.0AB51> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
lapic1: Forcing LINT1 to edge trigger
SMP: AP CPU #1 Launched!
lapic2: Forcing LINT1 to edge trigger
SMP: AP CPU #2 Launched!
lapic3: Forcing LINT1 to edge trigger
SMP: AP CPU #3 Launched!
GEOM: da1s1: geometry does not match label (16h,63s != 255h,63s).
GEOM: da1s2: geometry does not match label (16h,63s != 255h,63s).
Trying to mount root from ufs:/dev/ufs/FreeNASs2a
WARNING: /data was not properly dismounted
fuse4bsd: version 0.3.9-pre1, FUSE ABI 7.8


>Release-Note:
>Audit-Trail:
>Unformatted:

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