<div dir="ltr"><div><font size="2"><span style="font-family:arial,sans-serif">Hi all,</span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><font size="2"><span style="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><span style="color:rgb(0,0,255)"><i>lpc-address = 0x3f8<br>sirq = 4<br>local-tty = ttyS4<br>local-tty-baud = 115200</i></span></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><i><br></i></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif">BIOS serial redirection is enabled over COM port 0 (<i>0x3f8, sirq=4, baudrate=115200</i>) for super-IO.</span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><i><br></i></span></font></div><div><div><font size="2"><span style="font-family:arial,sans-serif">we set <i>/dev/ttyS0</i> in CentOS to work in polling mode by making its <i>irq=0</i> using the following command <br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><font size="2"><span style="font-family:arial,sans-serif"> <span style="color:rgb(0,0,255)">$ setserial /dev/ttyS0 uart 16550a irq 0 </span><br> <br> Now we are getting CentOS login prompt on SOL. <br> <br></span></font><div><font size="2"><span style="font-family:arial,sans-serif"> When we change /dev/ttyS0 back to interrupt mode with irq=4, we are not getting login prompt on SOL.<br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><span style="font-family:"Times","serif""><span style="font-family:arial,sans-serif">Whether anything is required to be done in OpenBMC firmware/BIOS to enable irq mode for SOL</span> ?<br></span></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><font size="2"><span style="font-family:arial,sans-serif">Thanks,</span></font></div><div><font size="2"><span style="font-family:arial,sans-serif"><br></span></font></div><div><span style="font-family:"Times","serif""><font size="2"><span style="font-family:arial,sans-serif">Akash</span></font><br></span></div></div></div>