Sony Xperia acro S (sony-hikari)

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Sony Xperia acro S
LT26w
Sony Xperia acro S with its included dock
Sony Xperia acro S with its included dock
Manufacturer Sony
Name Xperia acro S
LT26w
Codename hikari
Released 2012
Original software Android 4.0 (Ice Cream Sandwich), Linux 3.4.0
Hardware
Chipset Qualcomm MSM8260 Snapdragon S3
CPU 1.5 GHz Scorpion
GPU Adreno 220
Display 720 x 1280
Storage 16 GB
Memory 1 GB
Architecture armhf
Features
USB Networking
Flashing
Touchscreen
Display
WiFi
Xwayland
FDE
Mainline
Battery
3D Acceleration
Accelerometer
Audio
Bluetooth
Camera
GPS
Mobile data
SMS
Calls
USB OTG


Contributors

  • intgr

Maintainer(s)

What works

This device uses a non-standard ELF format boot.img file that is not supported by postmarketOS (yet):

% file boot.img
boot.img: ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, corrupted section header size

intgr has a working hacked postmarketOS toolchain for building compatible boot.img files.

What does not work

Booting.

Downstream kernels

After trying out tens of different combinations of kernel sources from the web, I couldn't find any that get as far as initramfs.

The best sources found manage to initialize the display backlight and then crash pretty late in the initialization process with error: (see dmesg)

BUG: Bad page state in process swapper/0  pfn:5dcba

WIP can be seen here: https://gitlab.com/intgr/pmaports/compare/master...device-sony-hikari

Mainline kernel

No peripherals supported yet, but /dev/last_kmsg can be extracted with a binary kernel (e.g. TWRP). Sadly the boot process appears to hang after executing /init: (see dmesg)

WIP can be seen here: https://gitlab.com/intgr/linux-postmarketos/compare/master...device-sony-hikari

How to enter flash mode

Power off the device. Hold Volume Up as you plug the USB cable into the device.

Alternatively, perform a hard reset by holding Power and Volume Up buttons. When the device vibrates, release the Power button *first*, and it will boot into fastboot loader.

Installation

Follow Sony's instructions to unlock the bootloader.

See also