Alberto97/platform_vendor_qcom-opensource_dtbtool
A python rewritten dtbtool and QCDT unpacker
README
A completely backwards compatible python rewritten qcom dtbtool.
The following options are supported:
| Short Argument |
Long Argument |
Description |
|
|
Parameter without arguments is input directory. Subfolders will be picked as well |
| -o |
--output-file |
Output dtb image |
| -p |
--dtc-path |
Path to dtc binary |
| -s |
--page-size |
Page Size in bytes. Default value is 2048 |
| -d |
--dt-tag |
Custom QCDT_DT_TAG tag. Default is: "qcom,msm-id = <" |
| -2 |
--force-v2 |
Force generating v2 output DTB |
| -3 |
--force-v3 |
Force generating v3 output DTB |
It will generate a dtb image with the following structure:
| Structure |
Size |
Notes |
| Header |
12B |
See header structure |
| Chip Index Table #1 |
variable |
See Chip Index Table structure |
| ... |
|
|
| Chip Index Table #Z |
variable |
See Chip Index Table structure |
| 0 ("zero") |
uint32 |
end of list delimiter |
| padding |
variable |
length for next DTB to start on page boundary |
| DTB #1 |
variable |
|
| padding |
variable |
length for next DTB to start on page boundary |
| DTB #2 |
variable |
|
| ... |
|
|
| DTB #Z |
variable |
|
Header Structure
| Structure |
Size |
Notes |
| Magic |
4B |
QCDT |
| QCDT Version |
uint32 |
e.g. 3 |
| DTB Entries |
uint32 |
number of DTB entries |
Chip Index Table Structure
| Structure |
Size |
Notes |
QCDT Version |
| Chipset |
uint32 |
e.g. ID for chipset |
|
| Platform |
uint32 |
e.g. ID for MSM8974 |
|
| Subtype |
uint32 |
e.g. ID for subtype |
v2/v3 only |
| Soc Revision |
uint32 |
e.g. MSM8974 v2 |
|
| PMIC0 |
uint32 |
first smallest SID of existing pmic |
v3 only |
| PMIC1 |
uint32 |
secondary smallest SID of existing pmic |
v3 only |
| PMIC2 |
uint32 |
third smallest SID of existing pmic |
v3 only |
| PMIC3 |
uint32 |
fourth smallest SID of existing pmic |
v3 only |
| DTB Offset |
uint32 |
byte offset from start/before MAGIC to DTB entry |
|
| DTB Size |
uint32 |
size in bytes of DTB blob |
|
