segunda-feira, 25 de Fevereiro de 2019 às 07:56:57 UTC, J. Kiszka escreveu:
> On 25.02.19 00:52, João Reis wrote:
> > domingo, 24 de Fevereiro de 2019 às 09:47:34 UTC, Jan Kiszka escreveu:
> >> On 23.02.19 18:32, João Reis wrote:
> >>> sábado, 23 de Fevereiro de 2019 às 10:29:41 UTC, Jan Kiszka escreveu:
> >>>> On 22.02.19 15:10, João Reis wrote:
> >>>>> sexta-feira, 22 de Fevereiro de 2019 às 13:19:56 UTC, J. Kiszka
> >>>>> escreveu:
> >>>>>> Please always keep the list in CC ("reply-to-all").
> >>>>>
> >>>>> I'm sorry, i forgot to cc to this group.
> >>>>>
> >>>>>> Also "jailhouse cell linux" does a "cell create" under the hood, but
> >>>>>> maybe there
> >>>>>> is something subtly borken that only surfaces this way. I probable
> >>>>>> never tested
> >>>>>> you pattern. Will do.
> >>>>>
> >>>>> Ok, i'll be waiting for your test. Thank you for your availability.
> >>>>>
> >>>>
> >>>> All working fine - provided you issue the "cell create" in an ssh
> >>>> session,
> >>>> rather than on the serial console. As the Linux cell will take away the
> >>>> UART
> >>>> from the root cell, the latter approach will make the system appear as
> >>>> if it is
> >>>> locked up.
> >>>>
> >>>> Jan
> >>>
> >>> Ok, that might be the problem. I was executing "cell create" on the
> >>> serial console, so probably that's why it is freezing.
> >>>
> >>> Just have one question, in what does the linux cell, or .c file, differ
> >>> from gic-demo cell in a sense that one (linux cell) takes away the UART
> >>> from root cell and the other (gic-demo cell) doesn't? (i suppose this
> >>> because in gic-demo cell i can still write to serial console after
> >>> "create cell" command)
> >>>
> >>
> >> The gic-demo shares the UART with the root cell in output-only mode. In
> >> contrast, the Linux non-root cell also uses the UART as input, and that
> >> mode
> >> cannot be shared.
> >>
> >> Jan
> >
> > But both gic-demo and linux cells share the same flags in UART memory
> > region (JAILHOUSE_MEM_READ, JAILHOUSE_MEM_WRITE, JAILHOUSE_MEM_IO,
> > JAILHOUSE_MEM_ROOTSHARED). Is there another configuration that allows linux
> > cell to use UART as input? Could you tell me where it is?
> >
>
> Compare the irqchip settings.
>
> Jan
>
> --
> Siemens AG, Corporate Technology, CT RDA IOT SES-DE
> Corporate Competence Center Embedded Linux
I tried to search what irqchip pin bitmap means in Ultrascale+ TRM but it only
refers to that address as GICD responsible for Display Controller, so i
proceeded to search in Arm Generic Interrupt Controller Architecture
Specification and the registers on base address 32 are referred as
"IMPLEMENTATION DEFINED registers".
If i want the linux cell to start outputing and inputting on UART0 instead of
UART1 (to not collide with root cell), do i only need to change .console
address field and UART .phys_start address to 0xff000000??
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