xref: /aosp_15_r20/external/igt-gpu-tools/man/intel_vbt_decode.rst (revision d83cc019efdc2edc6c4b16e9034a3ceb8d35d77c)
1================
2intel_vbt_decode
3================
4
5-----------------------------
6Intel Video BIOS Table parser
7-----------------------------
8.. include:: defs.rst
9:Author: IGT Developers <[email protected]>
10:Date: 2016-03-01
11:Version: |PACKAGE_STRING|
12:Copyright: 2010,2012,2016 Intel Corporation
13:Manual section: |MANUAL_SECTION|
14:Manual group: |MANUAL_GROUP|
15
16SYNOPSIS
17========
18
19**intel_vbt_decode** [*OPTIONS*]
20
21DESCRIPTION
22===========
23
24**intel_vbt_decode** is a tool to parse the Intel Video BIOS Tables (VBT) and
25present the information in a human readable format.
26
27The preferred ways of getting the binary VBT to parse are:
28
291) /sys/kernel/debug/dri/0/i915_vbt (since kernel version 4.5)
30
312) /sys/kernel/debug/dri/0/i915_opregion
32
333) Using the **intel_bios_dumper(1)** tool.
34
35The VBT consists of a VBT header, a BIOS Data Block (BDB) header, and a number
36of BIOS Data Blocks.
37
38OPTIONS
39=======
40
41--file=FILE
42    Parse Video BIOS Tables from FILE.
43
44--devid=DEVID
45    Pretend to be PCI ID DEVID. Some details can be parsed more accurately if
46    the platform is known.
47
48--panel-type=N
49    Parse the details for flat panel N. Usually this is retrieved from the Video
50    BIOS Tables, but this can be used to override.
51
52--all-panels
53    Parse the details for all flat panels present in the Video BIOS Tables.
54
55--hexdump
56    Hex dump the blocks.
57
58--block=N
59    Dump only the BIOS Data Block number N.
60
61REPORTING BUGS
62==============
63
64Report bugs to https://bugs.freedesktop.org.
65
66SEE ALSO
67========
68
69**intel_bios_dumper(1)**
70