<html><body><p><font size="2">Everything is done via MMIO. See src/usr/lpc/lpcdd.C</font><br><font size="2"><br>--<br>Dan Crowell<br>Senior Software Engineer - Power Systems Enablement Firmware<br>IBM Rochester: t/l 553-2987<br>dcrowell@us.ibm.com</font><br><br><img width="16" height="16" src="cid:1__=09BB0C91DFDDE69E8f9e8a93df938690918c09B@" border="0" alt="Inactive hide details for "Marty E. Plummer" ---10/15/2020 02:38:32 AM---So, I have a question. When doing LPC reads/writes (le"><font size="2" color="#424282">"Marty E. Plummer" ---10/15/2020 02:38:32 AM---So, I have a question. When doing LPC reads/writes (lets say to flash for now, but I suppose this wo</font><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">"Marty E. Plummer" <hanetzer@startmail.com></font><br><font size="2" color="#5F5F5F">To: </font><font size="2">openpower-firmware@lists.ozlabs.org, skiboot@lists.ozlabs.org</font><br><font size="2" color="#5F5F5F">Date: </font><font size="2">10/15/2020 02:38 AM</font><br><font size="2" color="#5F5F5F">Subject: </font><font size="2">[EXTERNAL] [OpenPower-Firmware] LPC access questions</font><br><font size="2" color="#5F5F5F">Sent by: </font><font size="2">"OpenPower-Firmware" <openpower-firmware-bounces+dcrowell=us.ibm.com@lists.ozlabs.org></font><br><hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br><br><br><tt><font size="2">So, I have a question. When doing LPC reads/writes (lets say to flash<br>for now, but I suppose this would also apply to the bmc's uart?), are<br>they done against the 0x6030000000000 mmio address or the 0x9004x scom<br>addresses? Or does it change depending on where in the ipl process you<br>are?<br><br>Regards,<br>Marty<br>_______________________________________________<br>OpenPower-Firmware mailing list<br>OpenPower-Firmware@lists.ozlabs.org<br><a href="https://lists.ozlabs.org/listinfo/openpower-firmware">https://lists.ozlabs.org/listinfo/openpower-firmware</a> <br><br></font></tt><br><br><BR>
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