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