diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-firmware-attributes')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-firmware-attributes | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-firmware-attributes b/Documentation/ABI/testing/sysfs-class-firmware-attributes index 8ea59fea4709..90fdf935aa5e 100644 --- a/Documentation/ABI/testing/sysfs-class-firmware-attributes +++ b/Documentation/ABI/testing/sysfs-class-firmware-attributes @@ -2,8 +2,8 @@ What: /sys/class/firmware-attributes/*/attributes/*/ Date: February 2021 KernelVersion: 5.11 Contact: Divya Bharathi <Divya.Bharathi@Dell.com>, - Mario Limonciello <mario.limonciello@dell.com>, Prasanth KSR <prasanth.ksr@dell.com> + Dell.Client.Kernel@dell.com Description: A sysfs interface for systems management software to enable configuration capability on supported systems. This directory @@ -130,8 +130,8 @@ What: /sys/class/firmware-attributes/*/authentication/ Date: February 2021 KernelVersion: 5.11 Contact: Divya Bharathi <Divya.Bharathi@Dell.com>, - Mario Limonciello <mario.limonciello@dell.com>, Prasanth KSR <prasanth.ksr@dell.com> + Dell.Client.Kernel@dell.com Description: Devices support various authentication mechanisms which can be exposed as a separate configuration object. @@ -197,15 +197,31 @@ Description: Drivers may emit a CHANGE uevent when a password is set or unset userspace may check it again. - On Dell systems, if Admin password is set, then all BIOS attributes + On Dell and Lenovo systems, if Admin password is set, then all BIOS attributes require password validation. + On Lenovo systems if you change the Admin password the new password is not active until + the next boot. + + Lenovo specific class extensions + ------------------------------ + + On Lenovo systems the following additional settings are available: + + lenovo_encoding: + The encoding method that is used. This can be either "ascii" + or "scancode". Default is set to "ascii" + + lenovo_kbdlang: + The keyboard language method that is used. This is generally a + two char code (e.g. "us", "fr", "gr") and may vary per platform. + Default is set to "us" What: /sys/class/firmware-attributes/*/attributes/pending_reboot Date: February 2021 KernelVersion: 5.11 Contact: Divya Bharathi <Divya.Bharathi@Dell.com>, - Mario Limonciello <mario.limonciello@dell.com>, Prasanth KSR <prasanth.ksr@dell.com> + Dell.Client.Kernel@dell.com Description: A read-only attribute reads 1 if a reboot is necessary to apply pending BIOS attribute changes. Also, an uevent_KOBJ_CHANGE is @@ -233,8 +249,8 @@ What: /sys/class/firmware-attributes/*/attributes/reset_bios Date: February 2021 KernelVersion: 5.11 Contact: Divya Bharathi <Divya.Bharathi@Dell.com>, - Mario Limonciello <mario.limonciello@dell.com>, Prasanth KSR <prasanth.ksr@dell.com> + Dell.Client.Kernel@dell.com Description: This attribute can be used to reset the BIOS Configuration. Specifically, it tells which type of reset BIOS configuration is being @@ -256,3 +272,14 @@ Description: Note that any changes to this attribute requires a reboot for changes to take effect. + +What: /sys/class/firmware-attributes/*/attributes/debug_cmd +Date: July 2021 +KernelVersion: 5.14 +Contact: Mark Pearson <markpearson@lenovo.com> +Description: + This write only attribute can be used to send debug commands to the BIOS. + This should only be used when recommended by the BIOS vendor. Vendors may + use it to enable extra debug attributes or BIOS features for testing purposes. + + Note that any changes to this attribute requires a reboot for changes to take effect. |