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| -rw-r--r-- | gnu/packages/hardware.scm | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gnu/packages/hardware.scm b/gnu/packages/hardware.scm index d3a99af358..f77336e504 100644 --- a/gnu/packages/hardware.scm +++ b/gnu/packages/hardware.scm @@ -73,3 +73,52 @@ ddcutil allows colour-related settings to be saved at the time a monitor is calibrated, and restored when the calibration is applied.") (license (list license:bsd-3 ; FindDDCUtil.cmake license:gpl2+)))) ; everything else + +(define-public msr-tools + (package + (name "msr-tools") + (version "1.3") + (source + (origin + (method url-fetch) + (uri (string-append "https://01.org/sites/default/files/downloads/" + name "/" name "-" version ".zip")) + (sha256 + (base32 "07hxmddg0l31kjfmaq84ni142lbbvgq6391r8bd79wpm819pnigr")))) + (build-system gnu-build-system) + (arguments + `(#:make-flags + (list (string-append "sbindir=" (assoc-ref %outputs "out") "/sbin")) + #:phases + (modify-phases %standard-phases + (delete 'configure) ; no configure script + (add-before 'install 'create-output-directory + (lambda* (#:key outputs #:allow-other-keys) + ;; 'make install' assumes that sbindir exists. + (let* ((out (assoc-ref outputs "out")) + (sbin (string-append out "/sbin"))) + (mkdir-p sbin) + #t)))) + #:tests? #f)) ; no test suite + (native-inputs + `(("unzip" ,unzip))) + ;; These registers and the CPUID instruction only exist on (most) x86 chips. + (supported-systems (list "i686-linux" "x86_64-linux")) + (home-page "https://01.org/msr-tools/") + (synopsis "Read and write Model-Specific Registers (@dfn{MSR})") + (description + "The MSR Tools project provides console utilities to directly access the +Model-Specific Registers (@dfn{MSR}s) and CPU ID of Intel-compatible processors: + +@itemize +@item @command{cpuid}: show identification and feature information of any CPU +@item @command{rdmsr}: read MSRs from any CPU or all CPUs +@item @command{wrmsr}: write to MSRs on any CPU or all CPUs +@end itemize + +These tools can be used to query and modify certain low-level CPU parameters, +such as the Turbo Boost ratio and Thermal Design Power (@dfn{TDP}) limits. + +MSR addresses differ (greatly) between processors, and any such modification can +be dangerous and may void your CPU or system board's warranty.") + (license license:gpl2))) ; cpuid.c is gpl2, {rd,wr}msr.c are gpl2+ |