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Samsung Galaxy Core Prime LTE (samsung-rossa)

From postmarketOS Wiki
Note This page is about the dedicated port of this device. There is also an optional generic port available for this device - see Generic MSM8916 (qcom-msm8916).
Samsung Galaxy Core Prime LTE
A photo of samsung-rossa (was cprime) running postmarketOS
A photo of samsung-rossa (was cprime) running postmarketOS
Manufacturer Samsung
Name Galaxy Core Prime LTE
Codename samsung-rossa
Released 2014
Type handset
Hardware
Chipset Qualcomm Snapdragon 410 (MSM8916)
CPU Quad-core 1.2 GHz Cortex-A53
GPU Adreno 306
Display 480x800
Storage 5.25 GB
Memory 880 MB
Architecture aarch64
Software
Original software Android
Original version
The version the device was shipped with.
 4.4.4
Extended version
The most recent supported version from the manufacturer.
 5.1.1
postmarketOS
Category testing
Pre-built images
Whether pre-built images are available here.
 no
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
 yes
Unixbench score
Unixbench Whetstone/Dhrystone score. See Unixbench.
 909.3
Optional Generic Port Generic MSM8916 (qcom-msm8916)
Features
Flashing
It is possible to flash the device with pmbootstrap flasher.
Works
USB Networking
After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system).
Works
Battery
Charging and battery level reporting works
Works
Screen
Display works. Ideally with sleep mode and brightness control.
Works
Touchscreen
Works
Multimedia
3D Acceleration
Works
Audio
Audio playback, microphone, headset and buttons.
Works
Camera
Broken
Connectivity
WiFi
Works
Bluetooth
Works
GPS
Untested
NFC
Near Field Communication
Works
Modem
Calls
Works
SMS
Works
Mobile data
Works
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Works
USB OTG
USB On-The-Go or USB-C Role switching
Works
Sensors
Accelerometer
Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile
Partial
Proximity
Broken
Note Note: This page is about Qualcomm MSM8916 variants of Core Prime LTE. For other variants, see Samsung Galaxy Core Prime.

Contributors

Users owning this device

  • Bolilingmeng89006 (Notes: rossaltezt)
  • Chipmunk (Notes: I own two; both are the Verizon Wireless variant, have locked bootloaders, and run stock; one has Reactivation lock active, although I have managed to enable USB Debugging on it)
  • Jrfern
  • PiotrZPL (Notes: 2 x G360F's, one running postmarketOS Edge, another rooted Android 5.0.2.)
  • WonderfulShrineMaidenOfParadise


Architecture

Note Note: Even though MSM8916 is capable of aarch64, the firmware of some variants were never updated with aarch64 support. Therefore, this device can only boot mainline on aarch64 at the moment.

Installation

lk2nd is a secondary bootloader that provides a standard fastboot interface, which can be used to boot postmarketOS without Android boot flashed or pmbootstrap flasher flash_kernel.

  1. Download lk2nd-msm8916.img from Releases page on Github.
  2. Boot your phone to bootloader (Odin/Download) mode by holding Volume Down and Home while powering up.
  3. Follow lk2nd instructions to install lk2nd. Basically flash it to the boot partition (heimdall flash --BOOT lk2nd-msm8916.img)
  4. Follow Qualcomm_Snapdragon_410/412_(MSM8916)#Installation to install postmarketOS.
Note Note: Enter lk2nd fastboot mode by pressing only Volume Down + Power (without Home). Pressing Home additionally will bring you to the Samsung Download mode.

Panel

There are 2 panel variants, and lk2nd is required to enable the panel[1][2].

This device is based on the Snapdragon 410.
See the SoC page for common tips, guides and troubleshooting steps

Flash LED

Currently WIP. It can be controlled with SG Micro SGM3140 charge pump LED driver[3].

GPS

No idea how to test yet.

Proximity Sensor

No interrupts received from gp2ap002s00f sensor.

Accelerometer

lis2hh12 accelerometer is not so stable for auto screen rotation, which suggests you to use fixed portrait or landscape mode.

TWRP

  • Install Heimdall
  • Download TWRP
  • Enable USB debugging in the system preferences
  • Press Power + Vol down + Home to go into download mode
  • heimdall flash --RECOVERY twrp-file.img --no-reboot

See also

References

  1. ↑ msm8916-samsung
  2. ↑ arm64: dts: qcom: msm8916-samsung-rossa: Add display panel
  3. ↑ arm64: dts: qcom: msm8916/39-samsung-a2015/fortuna/serranove: Add flash LED
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