scripts/mkramdiskelf at master · kittyhawk/scripts · GitHub

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#!/bin/bash

if test -n "$LDCMD"; then
    LDCMD=${LDCMD:-powerpc-bgp-linux-ld}
else
    LDCMD=${CROSS_COMPILE}ld
fi

MKIMGCMD=${MKIMGCMD:-mkimage}
GZIPCMD=gzip
RAMDISKADDR=0x11000000

file=$1

if [[ -z $file ]]
then
  echo "USAGE: $0 file"
  exit -1
fi

type=$(file -b $file)

if [[ $type = "directory" ]]
then
   echo "packing $file to $file.cpio"
   cpio-pack -d $file -o $file.cpio
   file=$file.cpio
   type=$(file -b $file)
fi

if [[ $type = "ASCII cpio"* ]]
then
   echo "compressing $file to $file.gz"
   cat $file | $GZIPCMD -9 > $file.gz
   file=$file.gz
   type=$(file -b $file)
fi

if [[ $type == "gzip compressed data"* ]]
then
   if [[ $(file -z -b $file) = "ASCII cpio"* ]]
   then
      echo "uimaging $file to $file.uimg"
      $MKIMGCMD -T ramdisk -n $file -d $file $file.uimg
      file=$file.uimg
      type=$(file -b $file)
   else
      echo "ERROR: gzip archive does not seem to be a cpio"
      exit -2
   fi
fi

if [[ $type = "PPCBoot image" || $type = "u-boot/PPCBoot image" || $type = "u-boot legacy uImage"* ]]
then
   echo "elfing $file to $file.elf"
   $LDCMD -m elf32ppc -e0 -Tdata $RAMDISKADDR -b binary -S -o $file.elf $file
   file=$file.elf
   type=$(file -b $file)
fi


if [[ $type = "ELF 32-bit MSB executable, PowerPC"* ]]
then
   echo "Setting permissions on $file to go+rx"
   chmod go+rx $file
   exit 0
fi

echo "$file : is of type $type: which is not supported"
exit -3