Serial Over Lan (SOL) no login prompt on Linux IRQ mode

[AKASH G J]

I tried with the configuration

cat /etc/obmc-console.conf

baud = 115200

local-tty = ttyS4

local-tty-baud = 115200


Still we are not getting CentOS login prompt on SOL in IRQ mode.


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


Thanks,


Akash

On Fri, Dec 27, 2019 at 1:03 PM Yong Li <yong.b.li at linux.intel.com> wrote:

> HI Akash,
>
>
>
> Just FYI, we are using the below conf file. You can find other related
> files from
> https://github.com/Intel-BMC/openbmc/blob/intel/meta-openbmc-mods/meta-ast2500/recipes-phosphor/console/obmc-console/obmc-console.conf
>
>
>
> cat /etc/obmc-console.conf
>
> baud = 115200
>
> local-tty = ttyS3
>
> local-tty-baud = 115200
>
>
>
> Thanks,
>
> Yong
>
> *From:* openbmc <openbmc-bounces+yong.b.li=
> linux.intel.com at lists.ozlabs.org> *On Behalf Of *AKASH G J
> *Sent:* Friday, December 27, 2019 2:54 PM
> *To:* openbmc at lists.ozlabs.org
> *Subject:* Serial Over Lan (SOL) no login prompt on Linux IRQ mode
>
>
>
> 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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