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Subject: Re: [PATCH 3/3] MIPS: Loongson64: Add /proc/boardinfo
To:     Jiaxun Yang <jiaxun.yang@flygoat.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Huacai Chen <chenhc@lemote.com>
References: <1602241050-24051-1-git-send-email-yangtiezhu@loongson.cn>
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 <9f0e4f45-dc8b-8351-8a40-8a4b8a86940f@flygoat.com>
Cc:     linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
        Xuefeng Li <lixuefeng@loongson.cn>
From:   Tiezhu Yang <yangtiezhu@loongson.cn>
Message-ID: <786f7ce7-a567-5d85-0946-bab36bbcf84a@loongson.cn>
Date:   Sun, 11 Oct 2020 07:40:05 +0800
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On 10/10/2020 04:01 PM, Jiaxun Yang wrote:
>
>
> 在 2020/10/9 下午6:57, Tiezhu Yang 写道:
>> Add /proc/boardinfo to get mainboard and BIOS info easily on the 
>> Loongson
>> platform, this is useful to point out the current used mainboard type 
>> and
>> BIOS version when there exists problems related with hardware or 
>> firmware.
>
> Hi Tiezhu,
>
> You're touching Kernel userspace API and I believe it should be 
> documented. Also linux-api list
> should be informed.

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Hi Jiaxun,

Thanks for your suggestion. I will do it as soon as possible and then 
send v2.

>
> Also I'd like to know if it's really useful for mainline kernel.
> For user who wants to check board information, dmidecode is already 
> useful enough.

There is no SMBIOS and dmidecode can see nothing on some machines, like 
this:
[root@linux loongson]# dmidecode
# dmidecode 2.12
# No SMBIOS nor DMI entry point found, sorry.

So I think it is useful.

Thanks,
Tiezhu Yang

>
> Thanks.
>
> - Jiaxun
>
>>
>> E.g. with this patch:
>>
>> [loongson@linux ~]$ cat /proc/boardinfo
>> Board Info
>> Manufacturer            : LEMOTE
>> Board Name              : LEMOTE-LS3A4000-7A1000-1w-V01-pc
>> Family                  : LOONGSON3
>>
>> BIOS Info
>> Vendor                  : Kunlun
>> Version                 : Kunlun-A1901-V4.1.3-20200414093938
>> ROM Size                : 4 KB
>> Release Date            : 2020-04-14
>>
>> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
>> ---
>>