Sony Xperia E Dual (sony-nanhu)
- Compiling the kernel
What does not work
- Flashing, there are problems with Sony's boot image format
The built kernel boots with a black screen and no further sign of acitivity. Fastboot flashes without errors but flash offsets are probably wrong. Only known working kernels have a different ELF file format.
Boot image format
There is one tool avaiable for unpacking Sony's ELF boot format into the normal ANDROID format:
Sadly, even unpacking and repacking a working prebuilt kernel doesn't seem to work.
I had more luck with mkelf.py script from Sony. You can loosely follow the tutorial here. This time unpacking a working kernel elf image and repacking it with mkefl.py worked. Needed to change only a few bits with vbindiff. Now we only need to find a working set of offsets and image parts to do the same with a custom kernel!
Here are some links describing the problem with Sony's boot format:
Next possible steps
- Try booting pmOS with a prebuilt kernel.
- Try repacking built kernel into ELF format
- UART debugging?