[Q] Port ROM to Xperia - Sony Xperia P, U, Sola, Go

As I know, it isn't hard to port a ROM to another device, since I did it on my Tablet about a year ago.
I just copyed the things I liked from system\app to system\app. And didn't touch the camera app.
Unfortunately, things changed since than. Sony is using a .ftf format and the ROM is stored in sys and bin files (maybe it already was back than - i just forgot about it).
So my question is, how to port a ROM, for example the AOSP from Google to a Xperia device? Is it even possible? Is it harder than it was earlier (or did I just have very much luck back than?)
PS:
To the category where I am posting:
The "Sony Xperia S" General forum is for tips, tricks, news, etc. about the Xperia S, NOT for questions.
For all questions about your Xperia S, please go to the Q & A section.
Click to expand...
Click to collapse
I am not talking about Xperia S so I thought this belongs here!
And if not here, where then? We only have these sections:
Xperia S, P, U, Sola, Acro S General
Xperia S Q&A
Xperia S, P, U, Sola, Acro S Accessories
Xperia S Android Development
Xperia Sola Android Development
Android development for the Sony Xperia Acro S
Xperia U Android Development
Xperia P Android Development
Xperia S, P, U, Sola, Acro S Themes and Apps
Click to expand...
Click to collapse
And it's not a MOD/ROM/etc, not a accesoire and not a theme/app!

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lesiki said:
As I know, it isn't hard to port a ROM to another device, since I did it on my Tablet about a year ago.
I just copyed the things I liked from system\app to system\app. And didn't touch the camera app.
Unfortunately, things changed since than. Sony is using a .ftf format and the ROM is stored in sys and bin files (maybe it already was back than - i just forgot about it).
So my question is, how to port a ROM, for example the AOSP from Google to a Xperia device? Is it even possible? Is it harder than it was earlier (or did I just have very much luck back than?)
PS:
To the category where I am posting:
I am not talking about Xperia S so I thought this belongs here!
And if not here, where then? We only have these sections:
And it's not a MOD/ROM/etc, not a accesoire and not a theme/app!
Click to expand...
Click to collapse
There is ongoing progress on porting CM9 to the Xperia P (which I assume is the device you're interested in). No GSM yet, so kinda useless, but we're getting there. There is a CWM based recovery, too, so flashable zips will be fine.

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Thread moved to Q & A section, kindly post in the relevant section next time, you've been warned.

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Are you kidding me? This is Xperia S Q&A
AND MY QUESTION IS NOT ABOUT THE XPERIA S!