postmarketOS

motorola titan (Moto G 2014)

Motorola Moto G 2014 (2nd generation), aka "titan".

Contributors

• PabloCastellano

What works

• [x] Kernel compiles (LineageOS)
• [x] Booting the system
• [ ] Splash screens
• [x] Unlock the root encrypted partition
• [x] Framebuffer graphics
• [x] Weston
• [x] Touchscreen
• [ ] XWayland
• [ ] Battery
• [ ] Flash light
• [ ] RGB front LED
• [ ] Backlight control
• [x] flash_system
• [x] boot
• [ ] flash_kernel
• [ ] wifi

What doesn't work well

• I had to disable -Werror in order to compile the kernel
• Screen is laggy

• initfs hook

• Splash screens don't work and I cannot get framebuffer working in initramfs

• Screen is black after I've entered the password. Workaround:

sh /etc/postmarketos-mkinitfs/hooks/00-device-motorola-titan.sh`

• Cannot boot if kernel is XZ-compressed (it boots if you build it using Android's build system)
• flash_kernel: boot image is too big
• flash_system: Invalid sparse file format at header magi

• wifi: requires wcnss-service (some work already begun in titan-wifi branch)

• show_splash

# From initramfs
/tmp # show_splash splash1.ppm.gz 
fbsplash: short read

This is written to dmesg everytime you type the previous command:

[   74.192213,0] mdss_fb_alloc_fb_ion_memory: alloc 0x398000B vaddr = e9b99000 (0x00200000 iova) for fb0
[   74.192374,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.192685,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.192846,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193004,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193106,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193263,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193366,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193522,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193624,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193780,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.193882,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194037,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194138,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194292,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194446,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194547,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194702,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194804,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.194960,0] vm_start=b6ad2000 vm_end=b6e6a000 vm_page_prot=1799
[   74.196516,0] lm3630a_bl 0-0038: wake up and re-init chip

Useful stuff

White LED:

echo 255 > /sys/devices/leds-qpnp-rgb-e1d8be00/leds/white/brightness

RGB LED documentation

Links

• android_kernel_motorola_msm8226
• titan.yml
• defconfig
• proprietary-files.txt

• CVE security status

• dmesg.txt

Photos

• PostmarketOS running on Motorola Moto G 2014 (titan)

Drivers table

Component	Brand	Module	Works?
Accelerometer	Bosch Sensortec MEMS accelerometer sensor driver	bma2x2
Framebuffer		mdss	Yes
WiFi		wcnss
Storage
USB networking