scripts/mkimage.sh

   1 #!/bin/bash
   2
   3 APP=`basename $0`
   4 PT=mbr
   5
   6 usage()
   7 {
   8     echo "Usage: ${APP} <image_file> <kernel_elf>"
   9     exit $*
  10 }
  11
  12 TMP=`getopt -o hp:k:i: --long help,partition:,kernel:,image: -n ${APP} -- "$@"`
  13 [ $? != 0 ] && usage 1
  14 eval set -- "$TMP"
  15 while true ; do
  16         case "$1" in
  17                 -h|--help) usage 0 ; shift ;;
  18                 -p|--partition)
  19                         case "$2" in
  20                                 "gpt"|"mbr") PT=$2 ; shift 2 ;;
  21                                 *)  echo "Unsupported partition type '$2'" >&2 ; exit 1 ;;
  22                         esac ;;
  23                 -k|--kernel) KERNEL_ELF=$2 ; shift 2 ;;
  24                 -i|--image) IMAGE_FILE=$2 ; shift 2 ;;
  25                 --) shift ; break ;;
  26                 *) echo "Internal error!" ; exit 1 ;;
  27         esac
  28 done
  29
  30 [ -z ${IMAGE_FILE} ] &&
  31 {
  32         [ $# -gt 0 ] || usage 1
  33         IMAGE_FILE=$1
  34         shift
  35 }
  36
  37 [ -z ${KERNEL_ELF} ] &&
  38 {
  39         [ $# -gt 0 ] || usage 1
  40         KERNEL_ELF=$1
  41         shift
  42 }
  43
  44 dd if=/dev/zero of=${IMAGE_FILE} bs=8192 count=65536
  45 case "${PT}" in
  46         "mbr")
  47                 sfdisk -D ${IMAGE_FILE} <<-EOF
  48                         ,,L,*
  49                 EOF
  50                 MODS="part_msdos" ;
  51                 ;;
  52         "gpt")
  53                 sgdisk -a 1 -n 0:0:-4096K -a 1 -n 0:0:0 -t 2:ef02 ${IMAGE_FILE} ;
  54 #               sgdisk -h 1 ${IMAGE_FILE} ;
  55 #               sfdisk -A2 ${IMAGE_FILE} ;
  56                 MODS="part_gpt" ;
  57                 ;;
  58         *)  echo "Unexpected partition type '${PT}'" >&2 ; exit 1 ;;
  59 esac
  60
  61 BLOCK_DEVICE=`losetup --partscan --find --show ${IMAGE_FILE}`
  62 mke2fs -b 1024 -t ext2 ${BLOCK_DEVICE}p1
  63 MOUNT_POINT=`mktemp --directory`
  64 mount -t ext2 ${BLOCK_DEVICE}p1 ${MOUNT_POINT}
  65 grub2-install --boot-directory=${MOUNT_POINT}/boot --modules="${MODS} ext2" ${BLOCK_DEVICE}
  66 #grub2-install --target=i386-multiboot --boot-directory=${MOUNT_POINT}/boot --force --modules="${MODS} ext2 multiboot multiboot2" --debug ${BLOCK_DEVICE}
  67 #grub2-mkimage -O i386-multiboot -o ${MOUNT_POINT}/boot/grub2/i386-multiboot/core.img -v
  68 #grub2-bios-setup -s -m /dev/null -d /usr/lib/grub -b i386-pc/boot.img -c ../../..${MOUNT_POINT}/boot/grub2/i386-multiboot/core.img -v ${BLOCK_DEVICE}
  69 install ${KERNEL_ELF} ${MOUNT_POINT}/boot/
  70 NAME=`basename ${KERNEL_ELF}`
  71 cat > ${MOUNT_POINT}/boot/grub2/grub.cfg <<EOF
  72         set default=0
  73         set timeout=30
  74         insmod gfxterm
  75         insmod vbe
  76         if terminal_output gfxterm ; then true ; else terminal gfxterm; fi
  77         set color_normal=black/white
  78         set menu_color_normal=green/light-blue
  79         set menu_color_highlight=yellow/blue
  80         menuentry "MString kernel" {
  81                 insmod multiboot
  82                 insmod multiboot2
  83                 search -n -f /boot/grub2/grub.cfg -s
  84                 multiboot /boot/${NAME}
  85 EOF
  86 for MOD do
  87 {
  88         NAME=`basename ${MOD}`
  89         install ${MOD} ${MOUNT_POINT}/boot/ && echo -e "\t\tmodule /boot/${NAME}" >> ${MOUNT_POINT}/boot/grub2/grub.cfg
  90 } ; done
  91 echo -e "\t}\n" >> ${MOUNT_POINT}/boot/grub2/grub.cfg
  92
  93 umount ${MOUNT_POINT}
  94 losetup --detach ${BLOCK_DEVICE}
  95 rmdir ${MOUNT_POINT}
  96 exit 0