Since we added support in meminfo to dump live page tables, describe
the only working architecture for now (aarch64) and add links to public
documentation for further reading.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
U-Boot has a fairly rigid memory map which is normally not visible
unless debugging is enabled in board_f.c
Update the 'meminfo' command to show it. This command does not cover
arch-specific pieces but gives a good overview of where things are.
Signed-off-by: Simon Glass <sjg@chromium.org>