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linux-imx/Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo
Tiezhu Yang 673a8c4f85 Documentation: ABI: Add /sys/firmware/lefi/boardinfo description for Loongson64 
Add a description for /sys/firmware/lefi/boardinfo on the Loongson
platform.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-10-27 12:46:35 +01:00

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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.