memtest86plus/system/temperature.h
Sam Demeulemeester 7aeac7271f
Add Memory Controller Registers polling to get current DRAM Timings/Frequency (#306)
Read the memory controller configuration (instead of just relying on SPD data) to get the actual live settings.

Currently supported platforms:
* Intel SNB to RPL (Core 2nd Gen to Core 13th Gen) - Desktop only (no Server nor Mobile)
* AMD SMR to RPL (Zen to Zen4) - Desktop only (no Server, Mobile nor APU).


Individual commits below for archival:

* First functions skeleton for reading IMC/ECC Registers

* Change directory name from 'chipsets' to 'mch' (Memory Controller Hub)

* Add Intel HSW and fix new files encoding

* First Intel HSW IMC implementation

* Add an option to disable MCH registers polling

* Remove old include from Makefiles

* Better Makefile and padding fixes

* Statically init 'imc' struct to generate string relocation record

* Small typos & code fixes

* Add IMC support for Intel Core 6/7/8/9th Gen (SKL/KBL/CFL/CML) This is a bit more complex than Haswell and below because MMIO switched to 64-bit with Skylake (lot of) betatesting needed

* Add IMC read support for Intel SNB/IVB (2nd/3rd gen Core)

* Fix hard-lock on Intel SNB/IVB due to wrong access type on MCHBAR pointer

* Move AMD SMN Registers & offsets to a specific header file

* Add IMC Read support for AMD Zen/Zen2 CPUs

* Change 'IMC' to 'MCH' in Makefiles to match actual mch/ directory

* Add IMC Reading support for Intel ADL&RPL CPUs (Core Gen12&13)

* Add support for Intel Rocket Lake (Core 11th Gen) and AMD Vermeer

* Add IMC reading for AMD Zen4 'Raphael' AM5 CPUs

* Various Cleanup #1 
Change terminology from Intel-based 'MCH' (Memory Controller Hub) to more universal 'IMC' (Integrated Memory Controller) Integrate imc_type var into imc struct. Remove previously created AMD SNM header file

* Various Cleanup 2

* Change DDR5 display format for IMC specs
DDR5 Freq can be > 10000 and timings up to 63-127-127-127, which overwflow the available space.
This commit remove the raw frequency on DDR5 (which may be incorrect due to Gear mechanism) and leave a bit of space to display the Gear engaged in the future
2023-05-12 15:33:28 +02:00

38 lines
813 B
C

// SPDX-License-Identifier: GPL-2.0
#ifndef TEMPERATURE_H
#define TEMPERATURE_H
/**
* \file
*
* Provides a function to read the CPU core temperature.
*
*//*
* Copyright (C) 2020-2022 Martin Whitaker.
* Copyright (C) 2003-2023 Sam Demeulemeester.
*/
#define AMD_TEMP_REG_K8 0xE4
#define AMD_TEMP_REG_K10 0xA4
// Temp Registers on AMD ZEN System Management Network
#define SMN_SMUIO_THM 0x00059800
#define SMN_THM_TCON_CUR_TMP (SMN_SMUIO_THM + 0x00)
/**
* Global CPU Temperature offset
*/
extern float cpu_temp_offset;
/**
* Init temperature sensor and compute offsets if needed
*/
void temperature_init(void);
/**
* Returns the current temperature of the CPU. Returns 0 if
* the temperature cannot be read.
*/
int get_cpu_temperature(void);
#endif // TEMPERATURE_H