scripts/sprd_dtbtool.sh

   1 #!/bin/bash
   2
   3
   4 ## Functions
   5 function write_to_4bytes_binary()
   6 {
   7         HEX=`echo "obase=16; $1" | bc`
   8
   9         NUM=$((8-${#HEX}))
  10
  11         ZERO="00000000"
  12         SUB=${ZERO:0:$NUM}
  13
  14         HEX=$SUB$HEX
  15
  16         for str in $(echo $HEX | sed 's/../& /g' | rev); do
  17                 str=$(echo -en $str | rev)
  18                 echo -en "\x$str"
  19         done > $2
  20 }
  21
  22 function write_to_padding_binary()
  23 {
  24         rm -f padding
  25
  26         PAD_SIZE=$(($(($PAD - $(($1 % $PAD)))) % $PAD))
  27         if [ $PAD_SIZE -gt 0 ]; then
  28                 dd if=/dev/zero of=./padding bs=1 count=$PAD_SIZE 2>/dev/zero
  29         else
  30                 touch padding
  31         fi
  32
  33         echo -en " | PAD: $PAD_SIZE[B]\n"
  34 }
  35
  36 function get_dtb_size()
  37 {
  38         SIZE=`du -b $1 | awk '{print $1}'`
  39         PAD_SIZE=$(($(($PAD - $(($SIZE % $PAD)))) % $PAD))
  40         DTB_SIZE=$(($SIZE + $PAD_SIZE))
  41 }
  42
  43
  44 ## Defines
  45 OUT="merged-dtb"
  46 OUT_TMP="multi.tmp"
  47
  48 OUT_DIR="./arch/arm/boot"
  49 DTS_DIR="./arch/arm/boot/dts"
  50
  51 SPRD_MAGIC="SPRD"
  52 SPRD_VERSION=1
  53
  54 DTB=(
  55 "sprd-scx35-tizen_z3-r00.dtb"
  56 "sprd-scx35-tizen_z3-r01.dtb"
  57 "sprd-scx35-tizen_z3-r02.dtb"
  58 "sprd-scx35-tizen_z3-r03.dtb"
  59 )
  60 DTB_CNT=4
  61
  62 CHIPSET=8830
  63 PLATFORM=0
  64 REV=131072
  65 DTB_OFFSET=2048
  66
  67 ENDOFHEADER=0
  68
  69 PAD=2048
  70
  71
  72 ## Header
  73 rm -f $OUT
  74 rm -f $OUT_TMP
  75 touch $OUT_TMP
  76
  77 HEADER_SIZE=$((12 + 20 * $DTB_CNT + 4))
  78
  79 echo -en " *HEADER "
  80 echo -en "$HEADER_SIZE[B]\n"
  81
  82 echo -en $SPRD_MAGIC > $OUT
  83 cat $OUT >> $OUT_TMP
  84 write_to_4bytes_binary $SPRD_VERSION $OUT
  85 cat $OUT >> $OUT_TMP
  86 write_to_4bytes_binary $DTB_CNT $OUT
  87 cat $OUT >> $OUT_TMP
  88
  89 for i in ${DTB[*]}; do
  90         FILE="$DTS_DIR/$i"
  91         if [ -e $FILE ]; then
  92                 write_to_4bytes_binary $CHIPSET $OUT
  93                 cat $OUT >> $OUT_TMP
  94
  95                 write_to_4bytes_binary $PLATFORM $OUT
  96                 cat $OUT >> $OUT_TMP
  97                 PLATFORM=$(($PLATFORM + 1))
  98
  99                 write_to_4bytes_binary $REV $OUT
 100                 cat $OUT >> $OUT_TMP
 101
 102                 write_to_4bytes_binary $DTB_OFFSET $OUT
 103                 cat $OUT >> $OUT_TMP
 104
 105                 get_dtb_size $FILE
 106                 write_to_4bytes_binary $DTB_SIZE $OUT
 107                 cat $OUT >> $OUT_TMP
 108
 109                 DTB_OFFSET=$(($DTB_OFFSET + $DTB_SIZE))
 110         else
 111                 echo -en "$i not found.\nexit\n"
 112                 exit -1
 113         fi
 114 done
 115
 116 write_to_4bytes_binary $ENDOFHEADER $OUT
 117 cat $OUT >> $OUT_TMP
 118
 119 write_to_padding_binary $HEADER_SIZE
 120 cat $OUT_TMP padding > $OUT
 121
 122
 123 ## DTB
 124 for i in ${DTB[*]}; do
 125         FILE="$DTS_DIR/$i"
 126         if [ -e $FILE ]; then
 127                 NAME=`echo $i`
 128                 echo -en " *$NAME "
 129
 130                 cat $OUT $FILE > $OUT_TMP
 131
 132                 SIZE=`du -b $FILE | awk '{print $1}'`
 133                 echo -en "$SIZE[B]\n"
 134
 135                 write_to_padding_binary $SIZE
 136                 cat $OUT_TMP padding > $OUT
 137         else
 138                 echo -en "$i not found.\nexit\n"
 139                 exit -1
 140         fi
 141 done
 142
 143
 144 ## End
 145 rm -f $OUT_TMP
 146 rm -f padding
 147 rm -f $OUT_DIR/$OUT
 148 mv -f $OUT $OUT_DIR/
 149
 150 S=`du -b $OUT_DIR/$OUT | awk '{print $1}'`
 151 S_K=$(($S/1024))
 152 echo -en "## OUT: $OUT size: $S[B]; $S_K[K]\n"