tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1What: /sys/firmware/lefi/boardinfo
2Date: October 2020
3Contact: Tiezhu Yang <yangtiezhu@loongson.cn>
4Description:
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.