1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
# 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>;
};
|
