thanks, this is part of puzzle. neeed *excluding the kernel and boot software*
*LE already working on A20* but where is this development images ?
development doesn't work on images, JohnDoe_71Rus. You already found the work you're looking for with the bootlin repository
there is no public images yet
like I said earlier, either 1) take the time to learn how to build what's available and have a product that technically runs, but no one would want to run, 2) choose very supported hardware, or 3) be patient and wait.
Many years ago, I try build android for a Cubieboard 2. By manual. But I ran into the problem of a lack of RAM and hard disk space for build