Re: [Xen-devel] ARM64:Porting xen to new hardware

[bharat gohil <ghl.bhrt@xxxxxxxxx>]

On Fri, Sep 29, 2017 at 11:12 PM, Julien Grall <julien.grall@xxxxxxx> wrote:

On 09/29/2017 09:15 AM, bharat gohil wrote:

Hello

Hi,

Please avoid top-posting.

The patch didn't work in my case.

The patch will be useful only if the compatible string in the DT of your UART is "snps,dw-apb-uart". What is the compatible string for it?

In my case, compatible string is "ns16550a".

Thanks,

Cheers,

Thanks,
Bharat

On Mon, Sep 25, 2017 at 11:38 PM, Oleksandr Tyshchenko <olekstysh@xxxxxxxxx <mailto:olekstysh@xxxxxxxxx>> wrote:

    Hi, Bharat

    On Mon, Sep 25, 2017 at 8:40 PM, bharat gohil <ghl.bhrt@xxxxxxxxx
    <mailto:ghl.bhrt@xxxxxxxxx>> wrote:

    >
    >
    > On 25-Sep-2017 6:59 PM, "Julien Grall" <julien.grall@xxxxxxx <mailto:julien.grall@xxxxxxx>> wrote:
    >
    > Hi,
    >
    > I am using same setup.
    > It just my guess because no response to key ctrl+a input.
    >
    > SoC has 8250 compitible UART.I will print character in receive handler of
    > UART in Xen. Do we have any other hook test this?

    Maybe you got stuck in the UART interrupt handler. Can you recheck?

    If so, can you take a look at the patch which has been posted recently:
    https://patchwork.kernel.org/patch/9959003/
    <https://patchwork.kernel.org/patch/9959003/>

     >
     > One more thing, is big-little supported in xen?
     > How Xen distribute load among the CPUs or Xen only run in context
    of the
     > guest only?
     > In my setup Dom0 use energy aware scheduler.
     >
     > Thanks,
     > Bharat
     >
     >
     > On 09/25/2017 01:53 PM, bharat gohil wrote:
     >>
     >> Hello Andrii,
     >>
     >> I tried but no success.
     >> It looks, Xen is not running.
     >
     >
     > I am a bit confused... on one of the previous e-mail you posted
    log from
     > Xen:
     >
     > (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to
    switch input to
     > Xen)
     >
     > (XEN) Freed 272kB init memory.
     >
     > So unless you have a completely new setup, Xen is definitely running.
     > However, what may happen is the serial driver in Xen does not
    receive input
     > characters.
     >
     > One of the first test would be to check whether the driver
    effectively
     > receive characters.
     >
     > Cheers,
     >
     >>
     >> Thanks,
     >> Bharat
     >>
     >>
     >> On Mon, Sep 25, 2017 at 5:45 PM, Andrii Anisov
    <andrii_anisov@xxxxxxxx <mailto:andrii_anisov@xxxxxxxx>

     >> <mailto:andrii_anisov@xxxxxxxx <mailto:andrii_anisov@xxxxxxxx>>>
    wrote:
     >>
     >>     Hello Bharat,
     >>
     >>
     >>     On 25.09.17 11:42, bharat gohil wrote:
     >>
     >>         Hello Wilk,
     >>
     >>         I had try Ctrl+a three times and 'd' but no dump on the
    serial
     >>         console.
     >>
     >>     Its a way to switch to XEN debug console. In case you are using
     >>     minicom, you should press Ctrl+A six times, then you will
    see the
     >>     line like following:
     >>          (XEN) *** Serial input -> Xen (type 'CTRL-a' three times to
     >>     switch input to DOM0)
     >>
     >>     Then you can press 'h' for seeing installed key handlers.
     >>
     >>     But all of this requires XEN to be running somehow.
     >>
     >>     --
     >>     *Andrii Anisov*
     >>
     >>
     >>
     >>
     >>
     >> --
     >> Regards,
     >> Bharat Gohil
     >> Sr.Software Engineer
     >> bharat.gohil@xxxxxxxxxx <mailto:bharat.gohil@xxxxxxxxxm>
    <mailto:bharat.gohil@xxxxxxxxxm <mailto:bharat.gohil@xxxxxxxxxm>>
     >> +919427054633 <tel:%2B919427054633>
     >
     >
     > --
     > Julien Grall
     >
     >



    --
    Regards,

    Oleksandr Tyshchenko




--
Regards,
Bharat Gohil
Sr.Software Engineer
bharat.gohil@xxxxxxxxxx <mailto:bharat.gohil@xxxxxxxxxm>
+919427054633

--
Julien Grall

--

Regards,

Bharat Gohil

Sr.Software Engineer

bharat.gohil@xxxxxxxxxx

+919427054633

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