microwatt/litedram/gen-src/sdram_init
Benjamin Herrenschmidt 7f1f6b8525 litedram: Add support for Microwatt-initialized controller
This adds support for initializing the memory controller from microwatt
rather than using a built-in RiscV processor. This might require some
fixes to LiteX and LiteDRAM (they haven't been merged as of this commit
yet).

This is enabled in the shipped generated files and can be changed via
modifying the generator script to pass False to "mw_init"

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
..
include litedram: Add support for Microwatt-initialized controller
libc litedram: Add support for Microwatt-initialized controller
Makefile litedram: Add support for Microwatt-initialized controller
bin2hex.py litedram: Add basic support for LiteX LiteDRAM
head.S litedram: Add basic support for LiteX LiteDRAM
main.c litedram: Add support for Microwatt-initialized controller
sdram_init.lds litedram: Add basic support for LiteX LiteDRAM