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authorMatt Fleming <matt.fleming@intel.com>2015-05-27 14:14:22 +0100
committerMatt Fleming <matt.fleming@intel.com>2015-05-27 15:40:20 +0100
commitc208358c2cc832eeb5b341a465eee30be19cd5a0 (patch)
treea3fefb97bd669f42b96a18f8251dd52e0bfc518e /Documentation/ABI
parentb119fe080a83d32d78f56877fe3a95a155417130 (diff)
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>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-efi10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-efi b/Documentation/ABI/testing/sysfs-firmware-efi
index 05874da7ce80..e794eac32a90 100644
--- a/Documentation/ABI/testing/sysfs-firmware-efi
+++ b/Documentation/ABI/testing/sysfs-firmware-efi
@@ -18,3 +18,13 @@ Contact: Dave Young <dyoung@redhat.com>
Description: It shows the physical address of config table entry in the EFI
system table.
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