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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Nouveau driver cannot extract FCODE ROM / DCB Block from OpenFirmware Device tree"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91319">91319</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Nouveau driver cannot extract FCODE ROM / DCB Block from OpenFirmware Device tree
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PowerPC
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>psaisanas@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=117079" name="attach_117079" title="kernel dmesg log & NVDA,BMP FCODE ROM">attachment 117079</a> <a href="attachment.cgi?id=117079&action=edit" title="kernel dmesg log & NVDA,BMP FCODE ROM">[details]</a></span>
kernel dmesg log & NVDA,BMP FCODE ROM
Hi,
When running a Powermac 11.2, (G5 Quad - powerpc64) with a Quadro FX4500
(NV47), previous kernels had no issue extracting the FCODE ROM / DCB block via
the OpenFirmware device tree.
Last vanilla kernel that i have compiled that seemed to work fine was kernel
3.18.16.
Normally, it will find the "BIT SIGNATURE" via OpenFirmware method.
However, when compiling a newer vanilla kernel 4.1.2, nouveau seems to have an
issue reading the FCODE ROM / DCB block / from the OpenFirmware device tree.
Also, interestingly, this time around it attempts to use the PROM method and
attempts to find the "BIT SIGNATURE" via this method.
Apparently it found a signature, but looks like garbage and seems like it cant
extract the DCB BLOCK.
As instructed, i have attached a dmesg.log along with a dump of the NVDA,BMP
image out of the following folder:
/sys/firmware/devicetree/base/pci@0,f0000000/NVDA,Parent@0/.
Not sure if this is correct, but i have passed the following nouveau module
options as i understood:
options nouveau config="NvMSI=0,debug=debug,VBIOS=trace"
I have placed the kernel dmesg log along with the NVDA,BMP dump in the attached
nouveau_powerpc64_pmac11.2.tar.xz archive.
Please let me know if there is any more info required.
Thanks for your help!
Best Regards,
Peter</pre>
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