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dracut: adopt and add a module for PowerPC Mac fan control

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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 2019-08-30 23:30:51 +02:00 committed by Helmut Pozimski
parent b63fe1916d
commit bba0ea546d
2 changed files with 146 additions and 2 deletions
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144
srcpkgs/dracut/patches/ppc-mac-thermal.patch Normal file
View file

@ -0,0 +1,144 @@
From 3b146ac6c0397f4a73c7b4ee498bff4e98479066 Mon Sep 17 00:00:00 2001
From: q66 <daniel@octaforge.org>
Date: Mon, 22 Jul 2019 18:52:08 +0200
Subject: [PATCH] modules.d: add a module for early fan control on PowerPC Macs
The goal of this module is to enable automatic loading of the
thermal/fan control modules on PowerPC based Macs, as on some
modular kernel configurations this will not happen automatically
which will result in the fans spinning up to 100% until they are
manually loaded.
This is especially a problem in live systems where it takes some
time to boot up and the spin-up happens before the system even
leaves initramfs.
---
modules.d/90ppcmac/load-thermal.sh | 29 +++++++++++
modules.d/90ppcmac/module-setup.sh | 82 ++++++++++++++++++++++++++++++
2 files changed, 111 insertions(+)
create mode 100644 modules.d/90ppcmac/load-thermal.sh
create mode 100644 modules.d/90ppcmac/module-setup.sh
diff --git a/modules.d/90ppcmac/load-thermal.sh b/modules.d/90ppcmac/load-thermal.sh
new file mode 100644
index 000000000..1e548f052
--- /dev/null
+++ modules.d/90ppcmac/load-thermal.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+#
+# This hook attempts to load the appropriate thermal modules
+# for PowerPC Macs depending on the specific machine you have.
+
+[ -r /proc/cpuinfo ] || exit 0
+
+load_windfarm() {
+ local pm_model="$(sed -n '/model/p' /proc/cpuinfo)"
+ pm_model="${pm_model##*: }"
+
+ # load quietly and respect the blacklist
+ # this way if the modules are for some reason missing, it will
+ # still exit successfully and not affect the boot process
+ case "$pm_model" in
+ PowerMac3,6) modprobe -b -q therm_windtunnel ;;
+ PowerMac7,2|PowerMac7,3) modprobe -b -q windfarm_pm72 ;;
+ PowerMac8,1|PowerMac8,2) modprobe -b -q windfarm_pm81 ;;
+ PowerMac9,1) modprobe -b -q windfarm_pm91 ;;
+ PowerMac11,2) modprobe -b -q windfarm_pm112 ;;
+ PowerMac12,1) modprobe -b -q windfarm_pm121 ;;
+ RackMac3,1) modprobe -b -q windfarm_rm31 ;;
+ *) ;;
+ esac
+
+ return 0
+}
+
+load_windfarm
diff --git a/modules.d/90ppcmac/module-setup.sh b/modules.d/90ppcmac/module-setup.sh
new file mode 100644
index 000000000..59221ec4d
--- /dev/null
+++ modules.d/90ppcmac/module-setup.sh
@@ -0,0 +1,82 @@
+#!/bin/bash
+#
+# This module attempts to properly deal with thermal behavior on PowerPC
+# based Mac systems, by installing the model-appropriate (when hostonly)
+# or all (when not) fan control/thermal kernel modules and loading them
+# in a hook.
+#
+# While this is not strictly necessary for all kernels, particularly
+# modular kernels will not autoload those drivers, even once the full
+# system is up, which results in the fans spinning up to 100%; this is
+# particularly annoying on live systems, where the system takes a while
+# to load, so it's best to load the drivers early in initramfs stage.
+#
+# The behavior of this is inspired by the thermal hook in Debian's
+# initramfs-tools, but written for dracut specifically and updated
+# for modern kernels (2012+).
+
+# called by dracut
+check() {
+ local _arch="$(uname -m)"
+ # only for PowerPC Macs
+ [[ "$_arch" == ppc* && "$_arch" != ppc*le ]] || return 1
+ return 0
+}
+
+# called by dracut
+depends() {
+ return 0
+}
+
+# called by dracut
+installkernel() {
+ pmac_model() {
+ local pm_model="$(grep model /proc/cpuinfo)"
+ echo "${pm_model##*: }"
+ }
+
+ # only PowerMac3,6 has a module, special case
+ if [[ "$(uname -m)" == ppc ]]; then
+ if ! [[ $hostonly ]] || [[ "$(pmac_model)" == "PowerMac3,6" ]]; then
+ instmods therm_windtunnel
+ fi
+ return 0
+ fi
+
+ windfarm_modules() {
+ if ! [[ $hostonly ]]; then
+ # include all drivers when not hostonly
+ instmods \
+ windfarm_pm72 windfarm_pm81 windfarm_pm91 windfarm_pm112 \
+ windfarm_pm121 windfarm_rm31
+ else
+ # guess model specific module, then install the rest
+ case "$(pmac_model)" in
+ PowerMac7,2|PowerMac7,3) instmods windfarm_pm72 ;;
+ PowerMac8,1|PowerMac8,2) instmods windfarm_pm81 ;;
+ PowerMac9,1) instmods windfarm_pm91 ;;
+ PowerMac11,2) instmods windfarm_pm112 ;;
+ PowerMac12,1) instmods windfarm_pm121 ;;
+ RackMac3,1) instmods windfarm_rm31 ;;
+ # no match, so skip installation of the rest
+ *) return 1 ;;
+ esac
+ fi
+ return 0
+ }
+
+ # hostonly and didn't match a model; skip installing other modules
+ windfarm_modules || return 0
+ # these are all required by the assorted windfarm_pm*
+ instmods \
+ windfarm_core windfarm_cpufreq_clamp windfarm_pid \
+ windfarm_smu_controls windfarm_smu_sat windfarm_smu_sensors \
+ windfarm_fcu_controls windfarm_ad7417_sensor windfarm_max6690_sensor \
+ windfarm_lm75_sensor windfarm_lm87_sensor
+}
+
+# called by dracut
+install() {
+ # this will attempt to load the appropriate modules
+ inst_hook pre-udev 99 "$moddir/load-thermal.sh"
+}

4
srcpkgs/dracut/template
View file

@ -1,7 +1,7 @@
# Template file for 'dracut'
pkgname=dracut
version=049
revision=1
revision=2
build_style=configure
configure_args="--prefix=/usr --sysconfdir=/etc"
conf_files="/etc/dracut.conf"
@ -9,7 +9,7 @@ hostmakedepends="asciidoc pkg-config"
makedepends="libkmod-devel"
depends="bash coreutils cpio psmisc"
short_desc="Low-level tool for generating an initramfs/initrd image"
maintainer="Orphaned <orphan@voidlinux.org>"
maintainer="q66 <daniel@octaforge.org>"
license="GPL-2.0-or-later, LGPL-2.0-or-later"
homepage="http://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html"
distfiles="https://github.com/dracutdevs/dracut/archive/${version}.tar.gz"