Huawei Mediapad M5 pro (huawei-cameron)

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Huawei Mediapad M5 pro
Huawei Mediapad M5 pro with accessory keyboard-case and stylus
Huawei Mediapad M5 pro with accessory keyboard-case and stylus
Manufacturer Huawei
Name Mediapad M5 pro
Codename huawei-cameron
Released 2018
Original software Android 8 Oreo (EMUI 8.0)
Hardware
Chipset Kirin 960 Series Chipset
CPU HiSilicon Kirin 960 (Cortex-A73/-A53)
GPU ARM Mali-G71 MP8
Display 10.8 inch 16:10, 2560 x 1600 pixel, native pen support
Storage 64 GB eMMC Flash
Memory 4096 MB
Architecture aarch64
Features
USB Networking
Works
Flashing
Broken
Touchscreen
Works
Display
Works
WiFi
Broken
Xwayland
Works
FDE
Mainline
Broken
Battery
3D Acceleration
Accelerometer
Audio
Bluetooth
Camera
GPS
Mobile data
SMS
Calls
USB OTG



Contributors

  • JohnBergago

Maintainer(s)

How to enter flash mode

With power off, press power und volume-down at the same time, with the usb-cable plugged in.

How to flash

As Huawei changed the partition layout, there is no boot partition anymore. Instead there is a ramdisk and a seperate kernel partition. In order to create the correct images the following steps need to be done:

  1. Get mkbootimg and unpackbootimg i.e. from here.
  2. You can extract the kernel-image and ramdisk from the created boot.img with unpackbootimg.
    $ # copy created boot image to current directory 
    $ cp ~/.local/var/pmbootstrap/chroot_rootfs_huawei-cameron/boot/boot.img-huawei-cameron .
    
    $ # extract the created boot.img
    $ mkdir pmos-boot-huawei-cameron
    $ unpackbootimg -i boot.img-huawei-cameron -o pmos-boot-huawei-cameron/ 
    
    $ # copy created boot image to current directory
    $ cp ~/.local/var/pmbootstrap/chroot_rootfs_huawei-cameron/boot/boot.img-huawei-cameron .
    
    $ # extract the created boot.img
    $ mkdir pmos-boot-huawei-cameron
    $ unpackbootimg -i boot.img-huawei-cameron -o pmos-boot-huawei-cameron/
    
    Use the extracted files in the following steps.
  3. Create ramdisk image:
    $ # create new ramdisk image with empty kernel (empty.file size is 0) 
    $ ./android-unpackbootimg/mkbootimg.py --kernel empty.file --ramdisk pmos-boot-huawei-cameron/boot.img-huawei-cameron-ramdisk.gz --cmdline 'buildvariant=user' --os_version 8.0.0 --os_patch_level 2018-06-05 -o pmos-cameron.ramdisk.img
    
  4. Create kernel image:
    $ # kernel (with empty.file size is 0):
    $ mkbootimg.py --kernel pmos-boot-huawei-cameron/boot.img-huawei-cameron-zImage --ramdisk empty.file --cmdline 'loglevel=4 initcall_debug=y page_tracker=on slub_min_objects=16 unmovable_isolate1=2:192M,3:224M,4:256M printktimer=0xfff0a000,0x534,0x538 androidboot.selinux=enforcing buildvariant=user' --base 0x0 --kernel_offset 524288 --ramdisk_offset 130023424 --second_offset 15728640 --tags_offset 0x7a00000 --os_version 8.0.0 --os_patch_level 2018-12 -o pmos-cameron.kernel.img
    
  5. Flash ramdisk and kernel with fastboot:
    $ fastboot flash kernel pmos-cameron.kernel.img 
    $ fastboot flash ramdisk pmos-cameron.ramdisk.img
    

Additional Kernel Configuration

OASES

About

OASES stands for Open Adaptive Security Extensions. Its a Tradmark of Baidu and seems to have something todo with adaptive kernel live-patching. For now there were no disadvantages from disabling it.

Location in menu

-> Device Drivers
   -> Huawei Platform Drivers
      -> Huawei platform drivers support (HUAWEI_PLATFORM [=y]) 

In Order to compile the kernel OASES had to be disabled.

Additional Info

The display brightness can be set by writing a value between 0 and 9960 to /sys/class/leds/lcd_backlight0/brightness.

$ sudo -i
# echo 1024 > /sys/class/leds/lcd_backlight0/brightness

For now the backlight is completely dark when the system boots.

Links