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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+title: Kexec HandOver (KHO) root tree
+
+maintainers:
+  - Mike Rapoport <rppt@kernel.org>
+  - Changyuan Lyu <changyuanl@google.com>
+
+description: |
+  System memory preserved by KHO across kexec.
+
+properties:
+  compatible:
+    enum:
+      - kho-v1
+
+  preserved-memory-map:
+    description: |
+      physical address (u64) of an in-memory structure describing all preserved
+      folios and memory ranges.
+
+patternProperties:
+  "$[0-9a-f_]+^":
+    $ref: sub-fdt.yaml#
+    description: physical address of a KHO user's own FDT.
+
+required:
+  - compatible
+  - preserved-memory-map
+
+additionalProperties: false
+
+examples:
+  - |
+    kho {
+        compatible = "kho-v1";
+        preserved-memory-map = <0xf0be16 0x1000000>;
+
+        memblock {
+                fdt = <0x80cc16 0x1000000>;
+        };
+    };