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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2020-10-13 07:55:02 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-10-27 12:46:35 +0100 |
| commit | 673a8c4f8517ea624cd838f7f2246b6990190770 (patch) | |
| tree | f9cb628f6b6829b16a9a6ce0a70951af0cc7422a /Documentation | |
| parent | MIPS: Loongson64: Add /sys/firmware/lefi/boardinfo (diff) | |
| download | linux-673a8c4f8517ea624cd838f7f2246b6990190770.tar.xz linux-673a8c4f8517ea624cd838f7f2246b6990190770.zip | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo b/Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo new file mode 100644 index 000000000000..5e3f6148c52e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo @@ -0,0 +1,35 @@ +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. |