sunxi-babelfish
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mripard
Boot-time Allwinner FEX to Device Tree translator
Allwinner Babelfish
sunxi-babelfish is a late-stage bootloader for Allwinner-based devices that are unable to boot a DT-based Linux kernel, mostly because a DT has not been written for this board yet.
It behaves as a fex-based kernel image, using the fex file to generate the DT that the kernel will use afterwards.
To do so, it also uses the mach-id passed from the bootloader and the DTSI that are embedded into the babelfish binary to construct a DTB that the kernel will be able to use.
This is loosely based on pxa-impedance-matcher from Daniel Mack (https://github.com/zonque/pxa-impedance-matcher), from a conceptual point-of-view but some code have been taken directly from it.
mripard