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Re: Extend grub-ofpathname to behaves like yaboot/ofpath on PowerPC syst

From: John Paul Adrian Glaubitz
Subject: Re: Extend grub-ofpathname to behaves like yaboot/ofpath on PowerPC system
Date: Fri, 3 May 2019 09:57:48 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

Hi Mathieu!

On 5/3/19 8:19 AM, Mathieu Malaterre wrote:
> We are looking to extend grub-ofpathname so that it also handles
> PowerPC system such as PowerMac with a limited OpenFirmware
> implementation[1]. In particular the following patch has been found to
> produce an output compatible with such system [2].
> While we understand that components of a path are in this general form:
> <name>@<address>:<arguments>
> We also do understand that name can be safely omitted as the device is
> actually getting located by
> its address. Therefore, these two paths refer to the same device:
> /address@hidden/address@hidden/address@hidden:b
> /@f4000000/@d/@0:b
> However for the PowerMac we tested it on, only the second form has
> been found to be accepted.

Thanks for the detailed explanation and for investigating this! Much

> How best should we provide you with a patch (the current one is kind
> of a hack)? Should we extend grub-ofpathname to take a new parameter
> (eg. `--omit-names`) and decide to print or not the name, would that
> be acceptable ?

This sounds like a very reasonable approach. Let's use either that or
maybe query OpenFirmware whether we're running on a PowerMac, if that's
somehow possible.


 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - address@hidden
`. `'   Freie Universitaet Berlin - address@hidden
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