[device-port] [santoni] Xiaomi Redmi 4X

[bitrvmpd]

Tree: halium-7.1

• [x] Create manifest - santoni
• [x] Boot image and system image build successfully
• [x] Device boots into rootfs, usb: Manufacturer: GNU/Linux Device appears in dmesg on host.
• [x] LXC container starts and does not crash
• [ ] libhybris tests
  • [x] test_gps
  • [ ] test_hwcomposer
  • [x] test_lights
  • [x] test_vibrator
  • [ ] test_wifi
  • [ ] test_sensors
  • [ ] test_audio
  • [ ] test_camera
  • [ ] test_input
  • [ ] test_nfc (not avaliable)
  • [ ] test_recorder

Troubleshooting:

• libnativehelper ScopedPthreadMutexLock.h missing ~~Added manually in libnativehelper/include/nativehelper download here. Maybe I'm missing a project in my manifest.xml?, I know there must be a better way to fix this.~~ It was, Halium/android was missing android_libcore repo https://github.com/Halium/android/pull/17
• signapk.jar was missing/not found Fixed by removing all .apk/.jar references inside proprietary-files.txt in device tree https://github.com/bitrvmpd/android_device_xiaomi_santoni/commit/28243c1320d737208d4a528854ce565ad96a7136 https://github.com/bitrvmpd/android_device_xiaomi_santoni/commit/4d16924cff4d61c6777565e3aabf9874f02d7a0c
• failed to allocate "X" blocks, out of space?: error: ext4_allocate_best_fit_partial: failed to allocate "X" blocks, out of space? fixed after using this patch https://github.com/Halium/halium-scripts/pull/4
• lxc crashing, /var/lib/lxc/android/rootfs Input/output error fixed after removing f2fs support in device tree https://github.com/bitrvmpd/android_device_xiaomi_santoni/commit/07c073bc46bf3e716f61d5618559fabd3dcf038d
• pm-service, dmesg being flooded with this: kernel: IPC_RTR: msm_ipc_router_bind: pm-service Do not have permissions fixed by applying this patch to the kernel https://github.com/Halium/android_kernel_lge_bullhead/compare/a34bb3a905...0b64b0cd08 and adding pm-service to net_raw group https://github.com/bitrvmpd/android_device_xiaomi_santoni/commit/46d44235491fdf83b40446cea4f5fe5f3cddeaaf
• wifi for wifi to work I had to run this: echo sta > /sys/module/wlan/parameters/fwpath
• Device reboots while installing a different rootfs: Installing a different rootfs (plasma,ubports,etc) causes a reboot because the extraction process fills all the RAM, so the installation never finishes. Sending a different busybox binary doesn't help. The solution is to add a swap device temporarily and reduce the aggressiveness of the LMK. Add these lines before echo "transfering rootfs tarball ... " in halium-install script

  # Check if we have a swap device enabled
  if [ $(do_shell "cat /proc/swaps | wc -l") -lt 2 ]
  then
  echo "Enabling swap device"
  SWAP=1
  do_shell "dd if=/dev/zero of=/data/tmpswap bs=2048M count=1"
  do_shell "mkswap /data/tmpswap"
  do_shell "swapon /data/tmpswap"
  # We need to low the aggressiveness of LMK so the device doesn't reboot.
  echo "Reducing LowMemoryKiller agressiveness"
  do_shell "echo 9999 > /sys/module/lowmemorykiller/parameters/adj"
  do_shell "echo 1 > /sys/module/lowmemorykiller/parameters/minfree"
  fi

  Then add these inside cleanup_device function to remove the swap file.

  if [ -n "$SWAP" ]
  then
  do_shell "sync"
  do_shell "swapoff /data/tmpswap"
  do_shell "rm -rf /data/tmpswap"
  fi

Sources

• fixup-mountpoints: https://github.com/mer-hybris/hybris-boot/pull/131
• kernel: https://github.com/bitrvmpd/msm-3.18/tree/halium-7.1
• device tree: https://github.com/bitrvmpd/android_device_xiaomi_santoni/tree/halium-7.1
• vendor tree: https://github.com/Nikesh001/android_vendor_xiaomi_santoni/tree/cm-14.1

[lnjX]

Please dont fork the vendor repository, just remove the apk and jar references in proprietary-files.txt then rerun halium devices setup, it'll regenerate the vendor makefiles.

[bitrvmpd]

I will update the manifest when theMuppets have the vendor tree for this device, as of now they don't.

[lnjX]

It doesn't has to be from TheMuppets, just take the original repository, you've forked: https://github.com/Nikesh001/android_vendor_xiaomi_santoni/tree/cm-14.1.

[bitrvmpd]

Done https://github.com/Halium/halium-devices/pull/59

[000exploit]

halium-boot doesn't boot a different rootfs.