What: /sys/firmware/lefi/boardinfo
Date: October 2020
Contact: Tiezhu Yang <yangtiezhu@loongson.cn>
Description:
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.
The related structures are already defined in the interface
specification about firmware and kernel which are common
requirement and specific for Loongson64, so only add a new
boardinfo.c file in arch/mips/loongson64.
For example:
[loongson@linux ~]$ cat /sys/firmware/lefi/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
By the way, using dmidecode command can get the similar info if there
exists SMBIOS in firmware, but the fact is that there is no SMBIOS on
some machines, we can see nothing when execute dmidecode, like this:
[root@linux loongson]# dmidecode
# dmidecode 2.12
# No SMBIOS nor DMI entry point found, sorry.
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