Subject: [v1 PATCH 2/2] Add Documentation regarding the ima-kexec-buffer node in the chosen node documentation

From: Prakhar Srivastava <[email-masked]>
Date: Sun, 7 Jun 2020 16:33:23 -0700

Add Documentation regarding the ima-kexec-buffer node in
 the chosen node documentation
 
Signed-off-by: Prakhar Srivastava <[email-masked]>
---
 Documentation/devicetree/bindings/chosen.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt
index 45e79172a646..a15f70c007ef 100644
--- a/Documentation/devicetree/bindings/chosen.txt
+++ b/Documentation/devicetree/bindings/chosen.txt
@@ -135,3 +135,20 @@ e.g.
 		linux,initrd-end = <0x82800000>;
 	};
 };
+
+linux,ima-kexec-buffer
+----------------------
+
+This property(currently used by powerpc, arm64) holds the memory range,
+the address and the size, of the IMA measurement logs that are being carried
+over to the kexec session.
+
+/ {
+	chosen {
+		linux,ima-kexec-buffer = <0x9 0x82000000 0x0 0x00008000>;
+	};
+};
+
+This porperty does not represent real hardware, but the memory allocated for
+carrying the IMA measurement logs. The address and the suze are expressed in
+#address-cells and #size-cells, respectively of the root node.
-- 
2.25.1

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