From c208358c2cc832eeb5b341a465eee30be19cd5a0 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 27 May 2015 14:14:22 +0100 Subject: [PATCH] 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 Acked-by: Ard Biesheuvel Reviewed-by: Jean Delvare Cc: Leif Lindholm Cc: Ivan Khoronzhuk Signed-off-by: Matt Fleming --- Documentation/ABI/testing/sysfs-firmware-efi | 10 ++++++++++ 1 file changed, 10 insertions(+) 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 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 -- 2.20.1