mtd/partitions/u-boot.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mtd/partitions/u-boot.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: U-Boot bootloader partition

description: |
  U-Boot is a bootloader commonly used in embedded devices. It's almost always
  located on some kind of flash device.

  Device configuration is stored as a set of environment variables that are
  located in a (usually standalone) block of data.

maintainers:
  - Rafał Miłecki <rafal@milecki.pl>

allOf:
  - $ref: partition.yaml#

properties:
  compatible:
    oneOf:
      - const: brcm,u-boot
        description: |
          Broadcom stores environment variables inside a U-Boot partition. They
          can be identified by a custom header with magic value.

patternProperties:
  "^partition-.*$":
    $ref: partition.yaml#/$defs/partition-node

unevaluatedProperties: false

examples:
  - |
    partitions {
        compatible = "fixed-partitions";
        #address-cells = <1>;
        #size-cells = <1>;

        partition@0 {
            compatible = "brcm,u-boot";
            reg = <0x0 0x100000>;
            label = "u-boot";

            partition-u-boot-env {
            };
        };

        partition@100000 {
            reg = <0x100000 0x1ff00000>;
            label = "firmware";
        };
    };