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82 lines
2.8 KiB
82 lines
2.8 KiB
#!/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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# called by dracut |
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check() { |
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local _arch=${DRACUT_ARCH:-$(uname -m)} |
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# only for PowerPC Macs |
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[[ $_arch == ppc* && $_arch != ppc64le ]] || return 1 |
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return 0 |
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} |
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# called by dracut |
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depends() { |
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return 0 |
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} |
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# called by dracut |
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installkernel() { |
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pmac_model() { |
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local pm_model="$(grep model /proc/cpuinfo)" |
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echo "${pm_model##*: }" |
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} |
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# only PowerMac3,6 has a module, special case |
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if [[ ${DRACUT_ARCH:-$(uname -m)} != ppc64* ]]; 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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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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# 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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# 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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