1 What: /sys/firmware/lefi/boardinfo 2 Date: October 2020 3 Contact: Tiezhu Yang <yangtiezhu@loongson.cn> 4 Description: 5 Get mainboard and BIOS info easily on the Loongson platform, 6 this is useful to point out the current used mainboard type 7 and BIOS version when there exists problems related with 8 hardware or firmware. 9 10 The related structures are already defined in the interface 11 specification about firmware and kernel which are common 12 requirement and specific for Loongson64, so only add a new 13 boardinfo.c file in arch/mips/loongson64. 14 15 For example: 16 17 [loongson@linux ~]$ cat /sys/firmware/lefi/boardinfo 18 Board Info 19 Manufacturer : LEMOTE 20 Board Name : LEMOTE-LS3A4000-7A1000-1w-V01-pc 21 Family : LOONGSON3 22 23 BIOS Info 24 Vendor : Kunlun 25 Version : Kunlun-A1901-V4.1.3-20200414093938 26 ROM Size : 4 KB 27 Release Date : 2020-04-14 28 29 By the way, using dmidecode command can get the similar info if there 30 exists SMBIOS in firmware, but the fact is that there is no SMBIOS on 31 some machines, we can see nothing when execute dmidecode, like this: 32 33 [root@linux loongson]# dmidecode 34 # dmidecode 2.12 35 # No SMBIOS nor DMI entry point found, sorry.
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