qemu/dtc/dtdiff

   1 #! /bin/bash
   2
   3 # This script uses the bash <(...) extension.
   4 # If you want to change this to work with a generic /bin/sh, make sure
   5 # you fix that.
   6
   7
   8 DTC=dtc
   9
  10 source_and_sort () {
  11     DT="$1"
  12     if [ -d "$DT" ]; then
  13         IFORMAT=fs
  14     elif [ -f "$DT" ]; then
  15         case "$DT" in
  16             *.dts)
  17                 IFORMAT=dts
  18                 ;;
  19             *.dtb)
  20                 IFORMAT=dtb
  21                 ;;
  22         esac
  23     fi
  24
  25     if [ -z "$IFORMAT" ]; then
  26         echo "Unrecognized format for $DT" >&2
  27         exit 2
  28     fi
  29
  30     $DTC -I $IFORMAT -O dts -qq -f -s -o - "$DT"
  31 }
  32
  33 if [ $# != 2 ]; then
  34     echo "Usage: dtdiff <device tree> <device tree>" >&2
  35     exit 1
  36 fi
  37
  38 diff -u <(source_and_sort "$1") <(source_and_sort "$2")