scripts/dtc/dtx_diff

Source file repositories/reference/linux-study-clean/scripts/dtc/dtx_diff

File Facts

System
Linux kernel
Corpus path
scripts/dtc/dtx_diff
Extension
[no extension]
Size
9072 bytes
Lines
362
Domain
Support Tooling And Documentation
Bucket
scripts
Inferred role
Support Tooling And Documentation: scripts
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-only

# Copyright (C) 2015 Frank Rowand
#


usage() {

	# use spaces instead of tabs in the usage message
	cat >&2 <<eod

Usage:

   `basename $0` DTx
        decompile DTx

   `basename $0` DTx_1 DTx_2
        diff DTx_1 and DTx_2


      --annotate    synonym for -T
      --color       synonym for -c (requires diff with --color support)
       -c           enable colored output
       -f           print full dts in diff (--unified=99999)
       -h           synonym for --help
       -help        synonym for --help
      --help        print this message and exit
       -s SRCTREE   linux kernel source tree is at path SRCTREE
                        (default is current directory)
       -S           linux kernel source tree is at root of current git repo
       -T           annotate output .dts with input source file and line
                        (-T -T for more details)
       -u           unsorted, do not sort DTx


Each DTx is processed by the dtc compiler to produce a sorted dts source
file.  If DTx is a dts source file then it is pre-processed in the same
manner as done for the compile of the dts source file in the Linux kernel
build system ('#include' and '/include/' directives are processed).

If two DTx are provided, the resulting dts source files are diffed.

If DTx is a directory, it is treated as a DT subtree, such as
  /proc/device-tree.

If DTx contains the binary blob magic value in the first four bytes,
  it is treated as a binary blob (aka .dtb or FDT).

Otherwise DTx is treated as a dts source file (aka .dts).

   If this script is not run from the root of the linux source tree,
   and DTx utilizes '#include' or '/include/' then the path of the
   linux source tree can be provided by '-s SRCTREE' or '-S' so that
   include paths will be set properly.

   The shell variable \${ARCH} must provide the architecture containing
   the dts source file for include paths to be set properly for '#include'
   or '/include/' to be processed.

   If DTx_1 and DTx_2 are in different architectures, then this script
   may not work since \${ARCH} is part of the include path.  The following
   workaround can be used:

      `basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
      `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
      `basename $0` tmp_dtx_1.dts tmp_dtx_2.dts
      rm tmp_dtx_1.dts tmp_dtx_2.dts

   If DTx_1 and DTx_2 are in different directories, then this script will

Annotation

Implementation Notes