dracut: adopt and add a module for PowerPC Mac fan control
Since upstream dracut is taking too long to review this, add it, as it's been reported to work fine by several users. [ci skip]
This commit is contained in:
q66
Helmut Pozimski
parent
b63fe1916d
commit
bba0ea546d
2 changed files with 146 additions and 2 deletions
144
srcpkgs/dracut/patches/ppc-mac-thermal.patch
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144
srcpkgs/dracut/patches/ppc-mac-thermal.patch
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From 3b146ac6c0397f4a73c7b4ee498bff4e98479066 Mon Sep 17 00:00:00 2001
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From: q66 <daniel@octaforge.org>
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Date: Mon, 22 Jul 2019 18:52:08 +0200
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Subject: [PATCH] modules.d: add a module for early fan control on PowerPC Macs
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The goal of this module is to enable automatic loading of the
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thermal/fan control modules on PowerPC based Macs, as on some
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modular kernel configurations this will not happen automatically
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which will result in the fans spinning up to 100% until they are
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manually loaded.
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This is especially a problem in live systems where it takes some
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time to boot up and the spin-up happens before the system even
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leaves initramfs.
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---
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modules.d/90ppcmac/load-thermal.sh | 29 +++++++++++
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modules.d/90ppcmac/module-setup.sh | 82 ++++++++++++++++++++++++++++++
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2 files changed, 111 insertions(+)
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create mode 100644 modules.d/90ppcmac/load-thermal.sh
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create mode 100644 modules.d/90ppcmac/module-setup.sh
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diff --git a/modules.d/90ppcmac/load-thermal.sh b/modules.d/90ppcmac/load-thermal.sh
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new file mode 100644
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index 000000000..1e548f052
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--- /dev/null
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+++ modules.d/90ppcmac/load-thermal.sh
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@@ -0,0 +1,29 @@
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+#!/bin/sh
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+#
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+# This hook attempts to load the appropriate thermal modules
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+# for PowerPC Macs depending on the specific machine you have.
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+
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+[ -r /proc/cpuinfo ] || exit 0
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+
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+load_windfarm() {
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+ local pm_model="$(sed -n '/model/p' /proc/cpuinfo)"
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+ pm_model="${pm_model##*: }"
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+
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+ # load quietly and respect the blacklist
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+ # this way if the modules are for some reason missing, it will
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+ # still exit successfully and not affect the boot process
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+ case "$pm_model" in
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+ PowerMac3,6) modprobe -b -q therm_windtunnel ;;
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+ PowerMac7,2|PowerMac7,3) modprobe -b -q windfarm_pm72 ;;
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+ PowerMac8,1|PowerMac8,2) modprobe -b -q windfarm_pm81 ;;
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+ PowerMac9,1) modprobe -b -q windfarm_pm91 ;;
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+ PowerMac11,2) modprobe -b -q windfarm_pm112 ;;
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+ PowerMac12,1) modprobe -b -q windfarm_pm121 ;;
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+ RackMac3,1) modprobe -b -q windfarm_rm31 ;;
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+ *) ;;
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+ esac
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+
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+ return 0
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+}
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+
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+load_windfarm
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diff --git a/modules.d/90ppcmac/module-setup.sh b/modules.d/90ppcmac/module-setup.sh
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new file mode 100644
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index 000000000..59221ec4d
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--- /dev/null
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+++ modules.d/90ppcmac/module-setup.sh
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@@ -0,0 +1,82 @@
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+#!/bin/bash
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+#
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+# This module attempts to properly deal with thermal behavior on PowerPC
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+# based Mac systems, by installing the model-appropriate (when hostonly)
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+# or all (when not) fan control/thermal kernel modules and loading them
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+# in a hook.
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+#
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+# While this is not strictly necessary for all kernels, particularly
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+# modular kernels will not autoload those drivers, even once the full
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+# system is up, which results in the fans spinning up to 100%; this is
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+# particularly annoying on live systems, where the system takes a while
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+# to load, so it's best to load the drivers early in initramfs stage.
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+#
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+# The behavior of this is inspired by the thermal hook in Debian's
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+# initramfs-tools, but written for dracut specifically and updated
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+# for modern kernels (2012+).
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+
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+# called by dracut
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+check() {
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+ local _arch="$(uname -m)"
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+ # only for PowerPC Macs
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+ [[ "$_arch" == ppc* && "$_arch" != ppc*le ]] || return 1
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+ return 0
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+}
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+
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+# called by dracut
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+depends() {
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+ return 0
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+}
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+
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+# called by dracut
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+installkernel() {
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+ pmac_model() {
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+ local pm_model="$(grep model /proc/cpuinfo)"
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+ echo "${pm_model##*: }"
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+ }
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+
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+ # only PowerMac3,6 has a module, special case
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+ if [[ "$(uname -m)" == ppc ]]; then
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+ if ! [[ $hostonly ]] || [[ "$(pmac_model)" == "PowerMac3,6" ]]; then
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+ instmods therm_windtunnel
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+ fi
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+ return 0
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+ fi
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+
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+ windfarm_modules() {
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+ if ! [[ $hostonly ]]; then
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+ # include all drivers when not hostonly
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+ instmods \
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+ windfarm_pm72 windfarm_pm81 windfarm_pm91 windfarm_pm112 \
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+ windfarm_pm121 windfarm_rm31
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+ else
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+ # guess model specific module, then install the rest
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+ case "$(pmac_model)" in
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+ PowerMac7,2|PowerMac7,3) instmods windfarm_pm72 ;;
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+ PowerMac8,1|PowerMac8,2) instmods windfarm_pm81 ;;
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+ PowerMac9,1) instmods windfarm_pm91 ;;
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+ PowerMac11,2) instmods windfarm_pm112 ;;
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+ PowerMac12,1) instmods windfarm_pm121 ;;
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+ RackMac3,1) instmods windfarm_rm31 ;;
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+ # no match, so skip installation of the rest
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+ *) return 1 ;;
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+ esac
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+ fi
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+ return 0
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+ }
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+
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+ # hostonly and didn't match a model; skip installing other modules
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+ windfarm_modules || return 0
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+ # these are all required by the assorted windfarm_pm*
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+ instmods \
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+ windfarm_core windfarm_cpufreq_clamp windfarm_pid \
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+ windfarm_smu_controls windfarm_smu_sat windfarm_smu_sensors \
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+ windfarm_fcu_controls windfarm_ad7417_sensor windfarm_max6690_sensor \
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+ windfarm_lm75_sensor windfarm_lm87_sensor
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+}
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+
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+# called by dracut
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+install() {
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+ # this will attempt to load the appropriate modules
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+ inst_hook pre-udev 99 "$moddir/load-thermal.sh"
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+}
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@ -1,7 +1,7 @@
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# Template file for 'dracut'
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pkgname=dracut
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version=049
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revision=1
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revision=2
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build_style=configure
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configure_args="--prefix=/usr --sysconfdir=/etc"
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conf_files="/etc/dracut.conf"
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@ -9,7 +9,7 @@ hostmakedepends="asciidoc pkg-config"
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makedepends="libkmod-devel"
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depends="bash coreutils cpio psmisc"
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short_desc="Low-level tool for generating an initramfs/initrd image"
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maintainer="Orphaned <orphan@voidlinux.org>"
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maintainer="q66 <daniel@octaforge.org>"
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license="GPL-2.0-or-later, LGPL-2.0-or-later"
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homepage="http://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html"
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distfiles="https://github.com/dracutdevs/dracut/archive/${version}.tar.gz"
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