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From: AKASH G J <akashgj91@gmail.com>
To: openbmc@lists.ozlabs.org
Subject: Serial Over Lan (SOL) no login prompt on Linux IRQ mode
Date: Fri, 27 Dec 2019 12:24:28 +0530	[thread overview]
Message-ID: <CAE33tLEsCJtr9VPYj57ZcOe5iWD6282WmrMTr-Hp96Y3rkBzAA@mail.gmail.com> (raw)

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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 set */dev/ttyS0* in CentOS 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 CentOS login prompt on SOL.

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

Whether anything is required to be done in OpenBMC firmware/BIOS to enable
irq mode for SOL ?



Thanks,

Akash

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             reply	other threads:[~2019-12-27  6:55 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-27  6:54 AKASH G J [this message]
2019-12-27  7:33 ` Serial Over Lan (SOL) no login prompt on Linux IRQ mode Yong Li
2019-12-30  0:02   ` AKASH G J
2021-07-26 14:36     ` Konstantin Klubnichkin
2021-07-26 14:52       ` Paul Fertser
2021-07-26 16:42         ` Konstantin Klubnichkin
2021-07-26 16:51           ` Paul Fertser
2021-07-27  8:53             ` Konstantin Klubnichkin
2021-07-27  9:30               ` Paul Fertser
2021-11-24 20:33                 ` Oskar Senft

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