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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/ABI/testing/sysfs-secvar | |
| parent | Initial commit. (diff) | |
| download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-secvar')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-secvar | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-secvar b/Documentation/ABI/testing/sysfs-secvar new file mode 100644 index 000000000..feebb8c57 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-secvar @@ -0,0 +1,46 @@ +What: /sys/firmware/secvar +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: This directory is created if the POWER firmware supports OS + secureboot, thereby secure variables. It exposes interface + for reading/writing the secure variables + +What: /sys/firmware/secvar/vars +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: This directory lists all the secure variables that are supported + by the firmware. + +What: /sys/firmware/secvar/format +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: A string indicating which backend is in use by the firmware. + This determines the format of the variable and the accepted + format of variable updates. + +What: /sys/firmware/secvar/vars/<variable name> +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: Each secure variable is represented as a directory named as + <variable_name>. The variable name is unique and is in ASCII + representation. The data and size can be determined by reading + their respective attribute files. + +What: /sys/firmware/secvar/vars/<variable_name>/size +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: An integer representation of the size of the content of the + variable. In other words, it represents the size of the data. + +What: /sys/firmware/secvar/vars/<variable_name>/data +Date: August 2019 +Contact: Nayna Jain h<nayna@linux.ibm.com> +Description: A read-only file containing the value of the variable. The size + of the file represents the maximum size of the variable data. + +What: /sys/firmware/secvar/vars/<variable_name>/update +Date: August 2019 +Contact: Nayna Jain <nayna@linux.ibm.com> +Description: A write-only file that is used to submit the new value for the + variable. The size of the file represents the maximum size of + the variable data that can be written. |