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TP-Link SafeLoader partitioning means flash contains multiple partitions defined in the on-flash table. Some of those partitions may have a special meaning and may require describing additionally. Allow that. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221108093102.8360-1-zajec5@gmail.com
58 lines
1.7 KiB
YAML
58 lines
1.7 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mtd/partitions/tplink,safeloader-partitions.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TP-Link SafeLoader partitions
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description: |
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TP-Link home routers store various data on flash (e.g. bootloader,
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flash layout, firmware, product info, configuration, calibration
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data). That requires flash partitioning.
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Flash space layout of TP-Link devices is stored on flash itself using
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a custom ASCII-based format. That format was first found in TP-Link
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devices with a custom SafeLoader bootloader. Later it was adapted to
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CFE and U-Boot bootloaders.
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Partitions specified in partitions table cover whole flash space. Some
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contain static data that shouldn't get modified (device's MAC or WiFi
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calibration data). Others are semi-static (like kernel). Finally some
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partitions contain fully changeable content (like rootfs).
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This binding describes partitioning method and defines offset of ASCII
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based partitions table. That offset is picked at manufacturing process
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and doesn't change.
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maintainers:
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- Rafał Miłecki <rafal@milecki.pl>
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properties:
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compatible:
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const: tplink,safeloader-partitions
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partitions-table-offset:
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description: Flash offset of partitions table
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$ref: /schemas/types.yaml#/definitions/uint32
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patternProperties:
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"^partition-.*$":
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$ref: partition.yaml#
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required:
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- partitions-table-offset
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additionalProperties: false
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examples:
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- |
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partitions {
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compatible = "tplink,safeloader-partitions";
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partitions-table-offset = <0x100000>;
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partition-file-system {
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linux,rootfs;
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};
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};
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