[PATCH] zynqmp: Add support for the CFC-400X

[Kinsey Moore]

On Tue, Nov 1, 2022 at 3:59 PM Chris Johns <chrisj at rtems.org> wrote:

> On 2/11/2022 5:38 am, Kinsey Moore wrote:> +#ifdef
> BSP_XILINX_ZYNQMP_MGMT_UART_BASE
> > +/**
> > + * @brief Zynq UltraScale+ MPSoC specific set up of a management
> console.
> > + *
> > + * The ZynqMP SoC's programmable logic can provide a serial interface
> for system
> > + * management which may need special initialization. Provide in the
> application
> > + * to override the defaults in the BSP.
> > + */
>
> I am not comfortable with PL implementation dependences for specific
> hardware
> being added to the generic BSP code. The Zynq, ZymqMP and Versal have so
> far
> only referenced the hard IP.
>
> Is the PL project and implementation for the PL logic openly available?
>
> Unfortunately, not as far as I'm aware. The management interface is
guaranteed to exist as a 16550 UART on all variants of the system and, from
the RTEMS perspective, the PL is a locked/hard part of the system.


> The hardware requires I request a data sheet from the manufacturer and that
> makes keeping this code in our open repo difficult.
>

I understand. The unfortunate part of this is that RTEMS isn't usable on
this platform beyond a couple of seconds without pushing off the system
watchdog via the 16550 UART. I have automated the watchdog parameter
manipulation externally for testing purposes, but a system running outside
that harness would encounter problems with many tests in the testsuite.

Kinsey
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/devel/attachments/20221101/06a36492/attachment.htm>