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efi: Add 'systab' information to Documentation/ABI 

It's not clear right now that the order in which entries are displayed
in /sys/firmware/efi/systab actually forms an ABI that userspace tools
rely upon.

Document the ABI along with the userspace tool that cares.

Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matt Fleming 2015-05-27 14:14:22 +01:00
parent b119fe080a
commit c208358c2c
1 changed files with 10 additions and 0 deletions
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10
Documentation/ABI/testing/sysfs-firmware-efi
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@ -18,3 +18,13 @@ Contact: Dave Young <dyoung@redhat.com>
Description: It shows the physical address of config table entry in the EFI Description: It shows the physical address of config table entry in the EFI
system table. system table.
Users: Kexec Users: Kexec
What: /sys/firmware/efi/systab
Date: April 2005
Contact: linux-efi@vger.kernel.org
Description: Displays the physical addresses of all EFI Configuration
Tables found via the EFI System Table. The order in
which the tables are printed forms an ABI and newer
versions are always printed first, i.e. ACPI20 comes
before ACPI.
Users: dmidecode