mirror of
https://github.com/NixOS/mobile-nixos.git
synced 2024-11-24 12:42:47 +03:00
70 lines
2.3 KiB
Nix
70 lines
2.3 KiB
Nix
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# This is intended to be used to produce a bootable `boot.img` with adbd, and
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# dropbear enabled. You would, in turn, use it to "flash" a dumb system.img file
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# to a partition, like userdata.
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#
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# *CAUTION* : there is no protection against flashing over the wrong partition.
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# Read about the usual pitfalls in the Android section of the documentation.
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{ config, lib, pkgs, ... }:
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let
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inherit (lib) mkMerge mkOrder;
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inherit (import ../../modules/initrd-order.nix) BEFORE_SWITCH_ROOT_INIT READY_INIT;
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# TODO : make this a part of the device knowledge base.
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# TODO : allow more complex layouts, e.g. LVM over system+data partitions.
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userdata_device = "/dev/disk/by-partlabel/userdata";
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in
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{
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config = mkMerge [
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{
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# Ensures we don't quit stage-1
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mobile.boot.stage-1.loop-forever.enable = true;
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# Enables networking and ssh in stage-1 !
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mobile.boot.stage-1.networking.enable = true;
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mobile.boot.stage-1.ssh.enable = true;
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# Make sure we don't burn the battery, then also show a useful
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# status indication about readyness...
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mobile.boot.stage-1.init = mkOrder READY_INIT ''
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for f in /sys/bus/cpu/devices/*/online; do echo 1 > $f; done
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echo 6 > /sys/class/leds/lcd-backlight/brightness
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(
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echo ""
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echo "+----------------------------+"
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echo "| Be mindful of your actions |"
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echo "| they have consequences |"
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echo "+----------------------------+"
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echo ""
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echo "The expected location for userdata is:"
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echo " ${userdata_device}"
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echo ""
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echo "If found, it has been symlinked to /dev/userdata"
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echo ""
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) >> /etc/warning.txt
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echo "cat /etc/warning.txt" >> /etc/profile
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# Yellow means it's close to ready
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ply-image --clear=0xFFFB5A &
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# This is cheesy, but often ssh isn't ready AT green.
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# This small delay is likely satisfactory.
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(sleep 3 ;
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# Checks if `userdata` is found.
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if [ -e "${userdata_device}" ]; then
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ply-image --clear=0x5FDD55
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ln -sf "${userdata_device}" "/dev/userdata"
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else
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# Red means bad...
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# You probably need to ssh into and inspect what's up.
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ply-image --clear=0xFF0000
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fi
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) &
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'';
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}
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];
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}
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