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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/openwrt,uimage.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OpenWrt variations of U-Boot Image partitions
+
+maintainers:
+ - Bjørn Mork <bjorn@mork.no>
+
+description: |
+ The image format defined by the boot loader "Das U-Boot" is often
+ modified or extended by device vendors. This defines a few optional
+ properties which can be used to describe such modifications.
+
+# partition.txt defines common properties, but has not yet been
+# converted to YAML
+#allOf:
+# - $ref: ../partition.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - openwrt,uimage
+ - const: denx,uimage
+
+ openwrt,padding:
+ description: Number of padding bytes between header and data
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0
+
+ openwrt,ih-magic:
+ description: U-Boot Image Header magic number.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0x27051956 # IH_MAGIC
+
+ openwrt,ih-type:
+ description: U-Boot Image type
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 2 # IH_TYPE_KERNEL
+
+ openwrt,offset:
+ description:
+ Offset between partition start and U-Boot Image in bytes
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0
+
+ openwrt,partition-magic:
+ description:
+ Magic number found at the start of the partition. Will only be
+ validated if both this property and openwrt,offset is non-zero
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0
+
+required:
+ - compatible
+ - reg
+
+#unevaluatedProperties: false
+additionalProperties: false
+
+examples:
+ - |
+ // device with non-default magic
+ partition@300000 {
+ compatible = "openwrt,uimage", "denx,uimage";
+ reg = <0x00300000 0xe80000>;
+ label = "firmware";
+ openwrt,ih-magic = <0x4e474520>;
+ };
+ - |
+ // device with U-Boot Image at an offset, with a partition magic value
+ partition@70000 {
+ compatible = "openwrt,uimage", "denx,uimage";
+ reg = <0x00070000 0x00790000>;
+ label = "firmware";
+ openwrt,offset = <20>;
+ openwrt,partition-magic = <0x43535953>;
+ };
+ - |
+ // device using a non-default image type
+ #include "dt-bindings/mtd/partitions/uimage.h"
+ partition@6c0000 {
+ compatible = "openwrt,uimage", "denx,uimage";
+ reg = <0x6c0000 0x1900000>;
+ label = "firmware";
+ openwrt,ih-magic = <0x33373033>;
+ openwrt,ih-type = <IH_TYPE_FILESYSTEM>;
+ };