FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/mtd/partitions/brcm,bcm947xx-cfe-partitions.yaml

     # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm947xx-cfe-partitions.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Broadcom BCM47xx Partitions
     
     description: |
      Broadcom is one of hardware manufacturers providing SoCs (BCM47xx) used in
      home routers. Their BCM947xx boards using CFE bootloader have several
      partitions without any on-flash partition table. On some devices their sizes
      and/or meanings can also vary so fixed partitioning can't be used.
    
      Discovering partitions on these devices is possible thanks to having a special
      header and/or magic signature at the beginning of each of them. They are also
      block aligned which is important for determinig a size.
    
      Most of partitions use ASCII text based magic for determining a type. More
      complex partitions (like TRX with its HDR0 magic) may include extra header
      containing some details, including a length.
    
      A list of supported partitions includes:
      1) Bootloader with Broadcom's CFE (Common Firmware Environment)
      2) NVRAM with configuration/calibration data
      3) Device manufacturer's data with some default values (e.g. SSIDs)
      4) TRX firmware container which can hold up to 4 subpartitions
      5) Backup TRX firmware used after failed upgrade
    
      As mentioned earlier, role of some partitions may depend on extra
      configuration. For example both: main firmware and backup firmware use the
      same TRX format with the same header. To distinguish currently used firmware a
      CFE's environment variable "bootpartition" is used.
    
    maintainers:
      - Rafał Miłecki <rafal@milecki.pl>
    
    properties:
      compatible:
        const: brcm,bcm947xx-cfe-partitions
    
    additionalProperties: false
    
    examples:
      - |
        partitions {
            compatible = "brcm,bcm947xx-cfe-partitions";
        };

Cache object: 60f8b9aaad8f372370f5553c525d870e