From 673a8c4f8517ea624cd838f7f2246b6990190770 Mon Sep 17 00:00:00 2001 From: Tiezhu Yang Date: Tue, 13 Oct 2020 13:55:02 +0800 Subject: 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 Signed-off-by: Thomas Bogendoerfer --- .../ABI/testing/sysfs-firmware-lefi-boardinfo | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo (limited to 'Documentation') 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 +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. -- cgit v1.2.3