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From: AKASH G J <akashgj91@gmail.com>
To: openbmc@lists.ozlabs.org
Subject: Re: No login prompt on obmc-console
Date: Tue, 12 Nov 2019 18:13:35 +0530	[thread overview]
Message-ID: <CAE33tLHjQDyFbuyR8EBEvgjnguFGhxxE8tQg1Ti-40sGqELTTw@mail.gmail.com> (raw)
In-Reply-To: <CAE33tLFmxAxOGze5+rf20w-nBBBqOFzkLu5dbsXsKCWTeV5i0Q@mail.gmail.com>

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Through ssh login on CentOS, we set /dev/ttyS0 to work in polling mode by
making its irq=0 using the following command

$ setserial /dev/ttyS0 uart 16550a irq 0

Now we are getting login prompt on serial console.

When we change /dev/ttyS0 back to interrupt mode with irq=4, we are not
getting login prompt over serial console.

We do not have a serial port connected to ttyS0 of BMC. So ttyS4 of BMC is
used as local-tty in obmc-console configuration.

Whether anything is required to be done in OpenBMC firmware to enable irq
mode for serial redirection.

On Wed, Nov 6, 2019 at 7:09 PM AKASH G J <akashgj91@gmail.com> wrote:

> Hi all,
>
> We are using BMC Aspeed AST-2500 in our motherboard with OpenBMC firmware.
> 'obmc-console' is used to get host messages over BMC. obmc-console.conf
> looks like
>
>
>
>
> *lpc-address = 0x3f8sirq = 4local-tty = ttyS4local-tty-baud = 115200*
>
> BIOS serial redirection is enabled over COM port 0 (0x3f8, sirq=4,
> baudrate=115200) for super-IO.
>
> We are getting BIOS debug messages, grub entries on BMC. But Linux booting
> is very slow, it is not printing systemd status messages(OK/FAILED) on
> serial console. Also is not giving login prompt on the serial console over
> BMC.
>
> Please someone help to resolve the problem.
>
>
> Thanks and Regards,
>
> Akash
>

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      reply	other threads:[~2019-11-12 12:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06 13:39 No login prompt on obmc-console AKASH G J
2019-11-12 12:43 ` AKASH G J [this message]

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