Re: [Qemu-devel] [PATCH 0/6] add dumpdts ability to convert dtb to dts

[Li Liu <john.liuli@huawei.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.

>