New patch to review for coreboot: ae7b350 amdk8: ASL include for K8 temperature sensor support in ACPI
Christoph Grenz (christophg+cb@grenz-bonn.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/222 -gerrit commit ae7b350b69ad6f93a530784615230e036178a4a7 Author: Christoph Grenz <christophg+cb@grenz-bonn.de> Date: Sun Sep 18 23:20:55 2011 +0200 amdk8: ASL include for K8 temperature sensor support in ACPI Add a ACPI Source Language snippet which if included as shown in the comments in the file, exposes the 4 possible temperature sensors in the CPU as ACPI thermal zones. Change-Id: I94dd773108e348a0fdb9d2f8d6cfe415d5fa0339 Signed-off-by: Christoph Grenz <christophg+cb@grenz-bonn.de> --- src/northbridge/amd/amdk8/thermal_mixin.asl | 282 +++++++++++++++++++++++++++ 1 files changed, 282 insertions(+), 0 deletions(-) diff --git a/src/northbridge/amd/amdk8/thermal_mixin.asl b/src/northbridge/amd/amdk8/thermal_mixin.asl new file mode 100644 index 0000000..3424cb5 --- /dev/null +++ b/src/northbridge/amd/amdk8/thermal_mixin.asl @@ -0,0 +1,282 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Christoph Grenz <christophg+cb@grenz-bonn.de> + * + * 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; version 2 of the License. + * + * 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 St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * include this file into a mainboards DSDT inside the PCI device + * "K8 Miscellaneous Control" and it will expose the temperature + * sensors of the processor as thermal zones. + * + * If, for example, the K8 Misc. Control device is on 0:18.3, include the + * following inside the PCI0 device: + * + * Device(K8MC) { + * Name (_ADR, 0x00180003) + * #include northbridge/amd/amdk8/thermal_mixin.asl + * } + * + * Note: as only the current temperature and the trip temperature for + * "Software Thermal Control" are available in the PCI registers, but the + * linux driver for thermal zones needs a critical temperature value, a + * reasonable critical temperature is calculated by simply adding 6°C to + * the trip temperature. + */ + +#ifndef K8TEMP_CRITICAL_ADD +# define K8TEMP_CRITICAL_ADD 6 +#endif + +OperationRegion(K8TR, PCI_Config, 0xE4, 0x4) +Field(K8TR, DWordAcc, NoLock, Preserve) { + , 1, + THTP, 1, /* Temperature sensor trip occured */ + CORE, 1, /* Select Core */ + TTS0, 1, /* Temperature sensor trip on CPU1 (or single core CPU0) */ + TTS1, 1, /* Temperature sensor trip on CPU0 */ + TTEN, 1, /* Temperature sensor trip enabled */ + PLAC, 1, /* Select Sensor */ + , 1, + DOFF, 6, /* Diode offset (signed 6bit-Integer) in °C */ + TFRC, 2, /* Temperature fractions */ + TVAL, 8, /* Temperature value in °C biased by -49 */ + TJOF, 5, + , 2, + SWTT, 1, /* Induce a thermtrip event (for diagnostic purposes) */ +} + +OperationRegion(K8ST, PCI_Config, 0x70, 0x1) +Field(K8ST, ByteAcc, NoLock, Preserve) { + TMAX, 5, /* Maximum temperature for software thermal control, in °C, biased by 52 */ +} + +Method(K8PT, 2) { + Divide(Multiply(Arg1, 5), 2, , Local0) + Return (Add(Multiply(Add(Arg0, 224),10), Local0)) +} + +Method(K8PO, 1) { + If (And(Arg0, 0x20)) + { + Return (Multiply(Subtract(Xor(Arg0, 0x3F), 1), 10)) + } + Else { + Return (Multiply(Arg0, 10)) + } +} + +ThermalZone (K8T0) { + Name(_HID, EisaId("PNP0C11")) + Name(_UID, "k8-0") + Name(_STR, Unicode("K8 compatible CPU Core 1 Thermal Sensor 1")) + + Method(_STA) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(Zero, PLAC) + If (LOr(PLAC, CORE)) { + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x00) + } + + If (LOr(LNot(TVAL), LEqual(TVAL, 0xFF))) { + Return (0x00) + } + + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x0F) + } + + Method(_TMP) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(Zero, PLAC) + + Store (K8PT(TVAL, TFRC), Local2) + Add (K8PO(DOFF), Local2, Local2) + Store(Local0, CORE) + Store(Local1, PLAC) + + Return (Local2) + } + + Method(_CRT) { + Add(TMAX, 325, Local0) + Add(Local0, K8TEMP_CRITICAL_ADD, Local0) + Return (Multiply(Local0, 10)) + } +} + +ThermalZone (K8T1) { + Name(_HID, EisaId("PNP0C11")) + Name(_UID, "k8-1") + Name(_STR, Unicode("K8 compatible CPU Core 1 Thermal Sensor 2")) + + Name(_TZD, Package () {\_PR.CPU0}) + + Method(_STA) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(Zero, PLAC) + If (LOr(PLAC, CORE)) { + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x00) + } + + Store(One, PLAC) + If (LOr(LNot(TVAL), LEqual(TVAL, 0xFF))) { + Return (0x00) + } + + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x0F) + } + + Method(_TMP) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(One, PLAC) + + Store (K8PT(TVAL, TFRC), Local2) + Add (K8PO(DOFF), Local2, Local2) + Store(Local0, CORE) + Store(Local1, PLAC) + + Return (Local2) + } + + Method(_CRT) { + Add(TMAX, 325, Local0) + Add(Local0, K8TEMP_CRITICAL_ADD, Local0) + Return (Multiply(Local0, 10)) + } +} + +ThermalZone (K8T2) { + Name(_HID, EisaId("PNP0C11")) + Name(_UID, "k8-2") + Name(_STR, Unicode("K8 compatible CPU Core 2 Thermal Sensor 1")) + + Name(_TZD, Package () {\_PR.CPU0}) + + Method(_STA) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(Zero, PLAC) + If (LOr(PLAC, CORE)) { + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x00) + } + + Store(One, CORE) + If (LOr(LNot(TVAL), LEqual(TVAL, 0xFF))) { + Return (0x00) + } + + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x0F) + } + + Method(_TMP) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(One, CORE) + Store(Zero, PLAC) + + Store (K8PT(TVAL, TFRC), Local2) + Add (K8PO(DOFF), Local2, Local2) + Store(Local0, CORE) + Store(Local1, PLAC) + + Return (Local2) + } + + Method(_CRT) { + Add(TMAX, 325, Local0) + Add(Local0, K8TEMP_CRITICAL_ADD, Local0) + Return (Multiply(Local0, 10)) + } +} + +ThermalZone (K8T3) { + Name(_HID, EisaId("PNP0C11")) + Name(_UID, "k8-3") + Name(_STR, Unicode("K8 compatible CPU Core 2 Thermal Sensor 2")) + + Name(_TZD, Package () {\_PR.CPU0}) + + Method(_STA) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(Zero, CORE) + Store(Zero, PLAC) + If (LOr(PLAC, CORE)) { + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x00) + } + + Store(One, CORE) + Store(One, PLAC) + If (LOr(LNot(TVAL), LEqual(TVAL, 0xFF))) { + Return (0x00) + } + + Store(Local0, CORE) + Store(Local1, PLAC) + Return (0x0F) + } + + Method(_TMP) { + Store(CORE, Local0) + Store(PLAC, Local1) + + Store(One, CORE) + Store(One, PLAC) + + Store (K8PT(TVAL, TFRC), Local2) + Add (K8PO(DOFF), Local2, Local2) + Store(Local0, CORE) + Store(Local1, PLAC) + + Return (Local2) + } + + Method(_CRT) { + Add(TMAX, 325, Local0) + Add(Local0, K8TEMP_CRITICAL_ADD, Local0) + Return (Multiply(Local0, 10)) + } +} \ No newline at end of file
participants (1)
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Christoph Grenz