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From: "Yong Li" <yong.b.li@linux.intel.com>
To: "'AKASH G J'" <akashgj91@gmail.com>,
	<openbmc@lists.ozlabs.org>
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Subject: RE: Serial Over Lan (SOL) no login prompt on Linux IRQ mode
Date: Fri, 27 Dec 2019 15:33:41 +0800
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HI Akash,

=20

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-as=
t2500/recipes-phosphor/console/obmc-console/obmc-console.conf

=20

cat /etc/obmc-console.conf

baud =3D 115200

local-tty =3D ttyS3

local-tty-baud =3D 115200

=20

Thanks,

Yong

From: openbmc =
<openbmc-bounces+yong.b.li=3Dlinux.intel.com@lists.ozlabs.org> On Behalf =
Of AKASH G J
Sent: Friday, December 27, 2019 2:54 PM
To: openbmc@lists.ozlabs.org
Subject: Serial Over Lan (SOL) no login prompt on Linux IRQ mode

=20

Hi all,

=20

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=20

lpc-address =3D 0x3f8
sirq =3D 4
local-tty =3D ttyS4
local-tty-baud =3D 115200

=20

BIOS serial redirection is enabled over COM port 0 (0x3f8, sirq=3D4, =
baudrate=3D115200) for super-IO.

=20

we set /dev/ttyS0 in CentOS to work in polling mode by making its =
irq=3D0 using the following command=20

=20

$ setserial /dev/ttyS0 uart 16550a irq 0=20

Now we are getting CentOS login prompt on SOL.=20

When we change /dev/ttyS0 back to interrupt mode with irq=3D4, we are =
not getting login prompt on SOL.

=20

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

=20

=20

=20

Thanks,

=20

Akash


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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal>HI Akash,<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Just FYI, we =
are using the below conf file. You can find other related files from <a =
href=3D"https://github.com/Intel-BMC/openbmc/blob/intel/meta-openbmc-mods=
/meta-ast2500/recipes-phosphor/console/obmc-console/obmc-console.conf">ht=
tps://github.com/Intel-BMC/openbmc/blob/intel/meta-openbmc-mods/meta-ast2=
500/recipes-phosphor/console/obmc-console/obmc-console.conf</a><o:p></o:p=
></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>cat =
/etc/obmc-console.conf<o:p></o:p></p><p class=3DMsoNormal>baud =3D =
115200<o:p></o:p></p><p class=3DMsoNormal>local-tty =3D =
ttyS3<o:p></o:p></p><p class=3DMsoNormal>local-tty-baud =3D =
115200<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Thanks,<o:p></o:p></p><p =
class=3DMsoNormal>Yong<o:p></o:p></p><p class=3DMsoNormal><a =
name=3D"_____replyseparator"></a><b>From:</b> openbmc =
&lt;openbmc-bounces+yong.b.li=3Dlinux.intel.com@lists.ozlabs.org&gt; =
<b>On Behalf Of </b>AKASH G J<br><b>Sent:</b> Friday, December 27, 2019 =
2:54 PM<br><b>To:</b> openbmc@lists.ozlabs.org<br><b>Subject:</b> Serial =
Over Lan (SOL) no login prompt on Linux IRQ mode<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>Hi =
all,</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>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 <br><br><i><span style=3D'color:blue'>lpc-address =3D =
0x3f8<br>sirq =3D 4<br>local-tty =3D ttyS4<br>local-tty-baud =3D =
115200</span></i></span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>BIOS serial =
redirection is enabled over COM port 0 (<i>0x3f8, sirq=3D4, =
baudrate=3D115200</i>) for super-IO.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>we set =
<i>/dev/ttyS0</i> in CentOS to work in polling mode by making its =
<i>irq=3D0</i> using the following command =
</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>$ =
setserial /dev/ttyS0 uart 16550a irq 0 </span><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'><br><br>Now we =
are getting CentOS login prompt on SOL. </span><o:p></o:p></p><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>When we change =
/dev/ttyS0 back to interrupt mode with irq=3D4, we are not getting login =
prompt on SOL.</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>Whether =
anything is required to be done in OpenBMC firmware/BIOS to enable irq =
mode for SOL</span><span style=3D'font-size:10.0pt;font-family:"Times =
New Roman",serif'> ?</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>Thanks,</span><=
o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>Akash</span><o:=
p></o:p></p></div></div></div></div></body></html>
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