0001 What: /sys/firmware/lefi/boardinfo
0002 Date: October 2020
0003 Contact: Tiezhu Yang <yangtiezhu@loongson.cn>
0004 Description:
0005 Get mainboard and BIOS info easily on the Loongson platform,
0006 this is useful to point out the current used mainboard type
0007 and BIOS version when there exists problems related with
0008 hardware or firmware.
0009
0010 The related structures are already defined in the interface
0011 specification about firmware and kernel which are common
0012 requirement and specific for Loongson64, so only add a new
0013 boardinfo.c file in arch/mips/loongson64.
0014
0015 For example:
0016
0017 [loongson@linux ~]$ cat /sys/firmware/lefi/boardinfo
0018 Board Info
0019 Manufacturer : LEMOTE
0020 Board Name : LEMOTE-LS3A4000-7A1000-1w-V01-pc
0021 Family : LOONGSON3
0022
0023 BIOS Info
0024 Vendor : Kunlun
0025 Version : Kunlun-A1901-V4.1.3-20200414093938
0026 ROM Size : 4 KB
0027 Release Date : 2020-04-14
0028
0029 By the way, using dmidecode command can get the similar info if there
0030 exists SMBIOS in firmware, but the fact is that there is no SMBIOS on
0031 some machines, we can see nothing when execute dmidecode, like this:
0032
0033 [root@linux loongson]# dmidecode
0034 # dmidecode 2.12
0035 # No SMBIOS nor DMI entry point found, sorry.
