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#!/bin/bash
# called by dracut
check() {
return 255
}
# called by dracut
installkernel() {
# Include KMS capable drm drivers
if [[ ${DRACUT_ARCH:-$(uname -m)} == arm* || ${DRACUT_ARCH:-$(uname -m)} == aarch64 ]]; then
# arm/aarch64 specific modules needed by drm
hostonly=$(optional_hostonly) instmods \
"=drivers/gpu/drm/i2c" \
"=drivers/gpu/drm/panel" \
"=drivers/gpu/drm/bridge" \
"=drivers/video/backlight"
fi
hostonly=$(optional_hostonly) instmods amdkfd hyperv_fb "=drivers/pwm"
# if the hardware is present, include module even if it is not currently loaded,
# as we could e.g. be in the installer; nokmsboot boot parameter will disable
# loading of the driver if needed
if [[ $hostonly ]]; then
local -a _mods
local i modlink modname
for i in /sys/bus/{pci/devices,platform/devices,virtio/devices,soc/devices/soc?,vmbus/devices}/*/modalias; do
[[ -e $i ]] || continue
[[ -n $(< "$i") ]] || continue
mapfile -t -O "${#_mods[@]}" _mods < "$i"
done
if ((${#_mods[@]})); then
# shellcheck disable=SC2068
if hostonly="" dracut_instmods --silent -o -s "drm_crtc_init|drm_dev_register|drm_encoder_init" -S "iw_handler_get_spy" ${_mods[@]}; then
if strstr "$(modinfo -F filename "${_mods[@]}" 2> /dev/null)" radeon.ko; then
hostonly='' instmods amdkfd
fi
fi
fi
# if there is a privacy screen then its driver must be loaded before the
# kms driver will bind, otherwise its probe() will return -EPROBE_DEFER
# note privacy screens always register, even with e.g. nokmsboot
for i in /sys/class/drm/privacy_screen-*/device/driver/module; do
[[ -L $i ]] || continue
modlink=$(readlink "$i")
modname=$(basename "$modlink")
hostonly=$(optional_hostonly) instmods "$modname"
done
else
dracut_instmods -o -s "drm_crtc_init|drm_dev_register|drm_encoder_init" "=drivers/gpu/drm" "=drivers/staging"
# also include privacy screen providers (see above comment)
# atm all providers live under drivers/platform/x86
dracut_instmods -o -s "drm_privacy_screen_register" "=drivers/platform/x86"
fi
}
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