[PATCH 12/14] powerpc: Add early udbg support for 40x processors

[Grant Likely]

On 11/20/07, Benjamin Herrenschmidt <benh at kernel.crashing.org> wrote:
> This adds some basic real mode based early udbg support for 40x
> in order to debug things more easily
>
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> ---
> --- linux-work.orig/arch/powerpc/platforms/Kconfig.cputype      2007-11-21 12:50:16.000000000 +1100
> +++ linux-work/arch/powerpc/platforms/Kconfig.cputype   2007-11-21 12:50:18.000000000 +1100
> @@ -43,6 +43,7 @@ config 40x
>         bool "AMCC 40x"
>         select PPC_DCR_NATIVE
>         select WANT_DEVICE_TREE
> +       select PPC_UDBG_16550

Unfortunately, this isn't always true.  The Xilinx Virtex parts us
config 40x, but not all FPGA bitstreams have a 16550 serial port.
Sometimes it's a uartlite instead.

Cheers,
g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195