From: Mac User <userm57@yahoo•com>
To: Rob Herring <robh+dt@kernel•org>
Cc: fthain@telegraphics•com.au, Frank Rowand <frank.rowand@sony•com>,
Benjamin Herrenschmidt <benh@kernel•crashing.org>,
Chintan Pandya <cpandya@codeaurora•org>,
devicetree@vger•kernel.org,
"linux-kernel@vger•kernel.org" <linux-kernel@vger•kernel.org>,
linuxppc-dev <linuxppc-dev@lists•ozlabs.org>
Subject: Re: v4.17 regression: PowerMac G3 won't boot, was Re: [PATCH v5 1/3] of: cache phandle nodes to reduce cost of of_find_node_by_phandle()
Date: Thu, 30 Aug 2018 20:39:44 -0600 [thread overview]
Message-ID: <569e4bc3-2149-4b2d-562f-e400dd05a8a8@yahoo.com> (raw)
In-Reply-To: <CAL_JsqLJ9QMHCMqGKpCouP1rTEO+cMGA1es94qAH+ukLsR31jg@mail.gmail.com>
On 8/29/18 7:05 PM, Rob Herring wrote:
> On Wed, Aug 29, 2018 at 7:44 PM Finn Thain <fthain@telegraphics•com.au> wrote:
>> Hi Frank,
>>
>> Linux v4.17 and later will no longer boot on a G3 PowerMac. The boot hangs
>> very early, before any video driver loads.
>>
>> Stan and I were able to bisect the regression between v4.16 and v4.17 and
>> arrived at commit 0b3ce78e90fc ("of: cache phandle nodes to reduce cost of
>> of_find_node_by_phandle()").
>>
>> I don't see any obvious bug in 0b3ce78e90fc or b9952b5218ad. But if you
>> revert these from v4.18 (which is also affected) that certainly resolves
>> the issue.
> Perhaps a bad assumption on phandle values causing a problem. Can you
> provide a dump of all the phandle or linux,phandle values from
> /proc/device-tree.
>
> Rob
Rob,
As suggested by Finn, I installed device-tree-compiler and
powerpc-ibm-utils.
Running "dtc -I fs -H both /sys/firmware/devicetree/base"
resulted in the following errors:
DTC: fs->dts on file "/sys/firmware/devicetree/base"
ERROR (name_properties): "name" property in
/pci/multifunc-device/pci1799,1#1 is incorrect ("pci1799,1" instead of
base node name)
ERROR (name_properties): "name" property in /pci/mac-io/ide#1 is
incorrect ("ide" instead of base node name)
ERROR (name_properties): "name" property in
/pci/mac-io/ide#1/atapi-disk#1 is incorrect ("atapi-disk" instead of
base node name)
ERROR (name_properties): "name" property in /cpus/PowerPC,750/l2-cache#1
is incorrect ("l2-cache" instead of base node name)
ERROR: Input tree has errors, aborting (use -f to force output)
If I force output with "-f", the resulting file has no occurrences
of "phandle".
Running "lsprop /proc/device-tree | grep -i phandle" results in no
output.
Please let me know if there's some other way to get information that
would be helpful.
thanks
-Stan
next prev parent reply other threads:[~2018-08-31 2:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1520208889-3908-1-git-send-email-frowand.list@gmail.com>
[not found] ` <1520208889-3908-2-git-send-email-frowand.list@gmail.com>
2018-08-30 0:44 ` v4.17 regression: PowerMac G3 won't boot, was Re: [PATCH v5 1/3] of: cache phandle nodes to reduce cost of of_find_node_by_phandle() Finn Thain
2018-08-30 1:05 ` Rob Herring
2018-08-31 2:39 ` Mac User [this message]
2018-08-31 4:35 ` Benjamin Herrenschmidt
2018-08-31 4:49 ` Benjamin Herrenschmidt
2018-08-31 12:28 ` Mac User
2018-08-31 23:36 ` Finn Thain
2018-09-01 4:54 ` Benjamin Herrenschmidt
2018-09-01 4:53 ` Benjamin Herrenschmidt
2018-08-31 4:49 ` Benjamin Herrenschmidt
2018-08-31 4:36 ` Frank Rowand
2018-08-31 4:58 ` Benjamin Herrenschmidt
2018-09-09 17:04 ` Benjamin Herrenschmidt
2018-09-09 23:52 ` Frank Rowand
2018-09-10 12:53 ` Rob Herring
2018-09-11 15:53 ` Frank Rowand
[not found] ` <abb0dec2-da3a-2c04-0e9f-28851b22cf75@yahoo.com>
2018-09-12 0:15 ` Finn Thain
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