SFI: add sysfs interface for SFI tables.

Analogous to ACPI's /sys/firmware/acpi/tables/...

create /sys/firmware/sfi/tables/

The tables are primariy for the kernel,
but sometimes it is useful for user-space to be
able to read them.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-firmware-sfi b/Documentation/ABI/testing/sysfs-firmware-sfi
new file mode 100644
index 000000000000..4be7d44aeacf
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sfi
@@ -0,0 +1,15 @@
+What:           /sys/firmware/sfi/tables/
+Date:           May 2010
+Contact:        Len Brown <lenb@kernel.org>
+Description:
+                SFI defines a number of small static memory tables
+                so the kernel can get platform information from firmware.
+
+                The tables are defined in the latest SFI specification:
+                http://simplefirmware.org/documentation
+
+                While the tables are used by the kernel, user-space
+                can observe them this way:
+
+                # cd /sys/firmware/sfi/tables
+                # cat $TABLENAME > $TABLENAME.bin