Bindings/mtd/partitions/tplink,safeloader-partitions.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/mtd/partitions/tplink,safeloader-partitions.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: TP-Link SafeLoader partitions
   8
   9 description: |
  10   TP-Link home routers store various data on flash (e.g. bootloader,
  11   flash layout, firmware, product info, configuration, calibration
  12   data). That requires flash partitioning.
  13
  14   Flash space layout of TP-Link devices is stored on flash itself using
  15   a custom ASCII-based format. That format was first found in TP-Link
  16   devices with a custom SafeLoader bootloader. Later it was adapted to
  17   CFE and U-Boot bootloaders.
  18
  19   Partitions specified in partitions table cover whole flash space. Some
  20   contain static data that shouldn't get modified (device's MAC or WiFi
  21   calibration data). Others are semi-static (like kernel). Finally some
  22   partitions contain fully changeable content (like rootfs).
  23
  24   This binding describes partitioning method and defines offset of ASCII
  25   based partitions table. That offset is picked at manufacturing process
  26   and doesn't change.
  27
  28 maintainers:
  29   - Rafał Miłecki <rafal@milecki.pl>
  30
  31 properties:
  32   compatible:
  33     const: tplink,safeloader-partitions
  34
  35   partitions-table-offset:
  36     description: Flash offset of partitions table
  37     $ref: /schemas/types.yaml#/definitions/uint32
  38
  39 patternProperties:
  40   "^partition-.*$":
  41     $ref: partition.yaml#
  42
  43 required:
  44   - partitions-table-offset
  45
  46 additionalProperties: false
  47
  48 examples:
  49   - |
  50     partitions {
  51         compatible = "tplink,safeloader-partitions";
  52         partitions-table-offset = <0x100000>;
  53
  54         partition-file-system {
  55                 linux,rootfs;
  56         };
  57     };