From: Li Liu <john.liuli@huawei.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>,
Alexander Graf <agraf@suse.de>,
QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH 0/6] add dumpdts ability to convert dtb to dts
Date: Tue, 26 Aug 2014 10:04:12 +0800 [thread overview]
Message-ID: <53FBEB1C.40809@huawei.com> (raw)
In-Reply-To: <CAFEAcA_gyVrVeC4KHR4DnSvwLJyrnkFtfW0D+We1PSvv57eDog@mail.gmail.com>
On 2014/8/25 20:22, Peter Maydell wrote:
> On 25 August 2014 05:00, john.liuli <john.liuli@huawei.com> wrote:
>> From: Li Liu <john.liuli@huawei.com>
>>
>> This patchset let qemu can convert dtb file to dts for two demands:
>>
>> Some archtectures may generate the dtb file dynamically through
>> qemu device tree functions. So this let it's possiable to dump final
>> dtb to dts and save it as a reference.
>>
>> For novices to debugging the issues caused by wrong dtb parameters.
>> It will be easy to check the dts directly without copying the
>> dtb which may be generated by 'dumpdtb' to the PC and dtc or fdtdump
>> it.
>>
>> The outputed dts format is compatile with 'dtc -I dtb -O dts xxx.dtb'.
>> There's a new parameter 'dumpdts' which is similar to 'dumpdtb'. so try
>> it like '-machine dumpdts=/tmp/xxx.dts'.
>
> Hi. Thanks for this patchset, but I'm afraid this doesn't
> seem to me like something that should be in QEMU.
> As you say, you can easily turn the dtb blob into a source file
> with dtc. That gets you a definitely-correct disassembly of the
> blob, and we don't need to maintain a possibly-buggy
> reimplementation of the dtb disassembler in QEMU.
>
> thanks
> -- PMM
>
That makes sense. It's mostly used for debugging.
Best regards
Li.
>
next prev parent reply other threads:[~2014-08-26 2:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-25 4:00 [Qemu-devel] [PATCH 0/6] add dumpdts ability to convert dtb to dts john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 1/6] device_tree.c: Introduce a function to check multiple strings for dts john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 2/6] device_tree.c: dump three kind data types of dts to a file desciptor john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 3/6] device_tree.c: Format a blob in memory as dts stream and dump to a file john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 4/6] device_tree.c: add the main function to analyse the parameter 'dumpdts' john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 5/6] machine: add 'dumpdts' parameter to 'machine' optslist john.liuli
2014-08-25 4:00 ` [Qemu-devel] [PATCH 6/6] arm: Allow dumping generated dtb to dts file john.liuli
2014-08-25 12:22 ` [Qemu-devel] [PATCH 0/6] add dumpdts ability to convert dtb to dts Peter Maydell
2014-08-26 2:04 ` Li Liu [this message]
2014-08-26 2:41 ` Peter Crosthwaite
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53FBEB1C.40809@huawei.com \
--to=john.liuli@huawei.com \
--cc=agraf@suse.de \
--cc=peter.crosthwaite@xilinx.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).