target/linux/bcm27xx/image/gen_rpi_sdcard_img.sh

   1 #!/bin/sh
   2
   3 set -e -x
   4
   5 if [ $# -ne 5 ]; then
   6     echo "SYNTAX: $0 <file> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
   7     exit 1
   8 fi
   9
  10 OUTPUT="$1"
  11 BOOTFS="$2"
  12 ROOTFS="$3"
  13 BOOTFSSIZE="$4"
  14 ROOTFSSIZE="$5"
  15
  16 align=4096
  17 head=4
  18 kernel_type=c
  19 rootfs_type=83
  20 sect=63
  21
  22 set $(ptgen -o $OUTPUT -h $head -s $sect -l $align -t $kernel_type -p ${BOOTFSSIZE}M -t $rootfs_type -p ${ROOTFSSIZE}M)
  23
  24 BOOTOFFSET="$(($1 / 512))"
  25 ROOTFSOFFSET="$(($3 / 512))"
  26
  27 dd bs=512 if="$BOOTFS" of="$OUTPUT" seek="$BOOTOFFSET" conv=notrunc
  28 dd bs=512 if="$ROOTFS" of="$OUTPUT" seek="$ROOTFSOFFSET" conv=notrunc