x86: Enable debug UART for Minnowmax

Enable the debug UART and emit a single 'a' early in the init sequence to
show that it is working.

Unfortunately the debug UART implementation needs a stack to work. I cannot
seem to remove this limitation as the absolute 'jmp %eax' instruction goes
off into the weeds.

So this means that the character output cannot be any earlier than
car_init_ret, where memory is available for a stack.

Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Lukasz Majewski <[email protected]>

0 files changed, 0 insertions, 0 deletions