Jens Reidel
6ca5f01ee4
Signed-off-by: Jens Reidel <adrian@travitia.xyz> Part-of: https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6286
62 lines
1.6 KiB
Bash
62 lines
1.6 KiB
Bash
#!/bin/sh
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# Some devices (xiaomi-surya) ship with a touchscreen that has no persistent
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# firmware storage. That is unfortunate and means we need to provide firmware
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# from the initramfs for FDE to work.
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# This is only the case for the novatek touchscreens. Their firmware resides
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# in /vendor/firmware. Let's copy it over.
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# The file names are novatek_ts_huaxing_fw.bin and novatek_ts_tianma_fw.bin,
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# for both panels respectively.
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for input in /sys/class/input/input*/uevent
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do
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if grep -q "NT36XXX" "$input"
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then
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echo "nt36xxx is loaded, mounting firmware for it!"
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mkdir /firmware-mnt
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for part in /sys/block/sd*/sd*
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do
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DEVNAME="$(grep DEVNAME "$part"/uevent | sed 's/DEVNAME=//g')"
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PARTNAME="$(grep PARTNAME "$part"/uevent | sed 's/PARTNAME=//g')"
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# Could be vendor_a or vendor_b
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if [[ "$PARTNAME" == "vendor"* ]]
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then
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mount -o ro,nodev,noexec,nosuid \
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"/dev/$DEVNAME" /firmware-mnt
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break
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# Super partition with vendor on a subpartition, system if retrofit
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elif [[ "$PARTNAME" == "super" ]] || [[ "$PARTNAME" == "system" ]]
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then
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if ! make-dynpart-mappings "/dev/$DEVNAME"; then continue; fi;
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for dynpart in /dev/mapper/*
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do
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if [[ "$dynpart" == *"vendor"* ]]
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then
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mount -o ro,nodev,noexec,nosuid \
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"$dynpart" /firmware-mnt
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break 2
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fi
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done
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fi
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done
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if [ -d /firmware-mnt/firmware ]
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then
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for firmware_file in /firmware-mnt/firmware/novatek_ts_*_fw.bin
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do
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echo "Found novatek firmware file at $firmware_file"
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cp $firmware_file /lib/firmware/
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done
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umount /firmware-mnt
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fi
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break
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fi
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done
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