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-rw-r--r--kernel/Documentation/devicetree/bindings/chosen.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/chosen.txt b/kernel/Documentation/devicetree/bindings/chosen.txt
index ed838f453..6ae9d82d4 100644
--- a/kernel/Documentation/devicetree/bindings/chosen.txt
+++ b/kernel/Documentation/devicetree/bindings/chosen.txt
@@ -44,3 +44,11 @@ Implementation note: Linux will look for the property "linux,stdout-path" or
on PowerPC "stdout" if "stdout-path" is not found. However, the
"linux,stdout-path" and "stdout" properties are deprecated. New platforms
should only use the "stdout-path" property.
+
+linux,booted-from-kexec
+-----------------------
+
+This property is set (currently only on PowerPC, and only needed on
+book3e) by some versions of kexec-tools to tell the new kernel that it
+is being booted by kexec, as the booting environment may differ (e.g.
+a different secondary CPU release mechanism)