target/linux/etrax-2.6/image/e100boot/src/cbl/free_size

   1 #!/bin/sh
   2 #
   3 # Calculates the size left in ETRAX cache when bootloader is loaded.
   4 #
   5
   6 BOOT_FILE=`dirname $0`/net/net.out
   7 HEADER_FILE=`dirname $0`/src/e100boot.h
   8
   9 for FILE in $BOOT_FILE $HEADER_FILE; do
  10         if [ ! -f $FILE ]; then
  11                 echo "Could not find the file \"$FILE\"!"
  12                 exit 1
  13         fi
  14 done
  15
  16 # The cache size is given in hex
  17 CACHE_SIZE=2000
  18
  19 BSS_SIZE=`nm-cris $BOOT_FILE | grep Ebss | cut -d ' ' -f 1 | tr a-f A-F`
  20
  21 TEXT_SIZE=`nm-cris $BOOT_FILE | grep Stext | cut -d ' ' -f 1 | tr a-f A-F`
  22
  23 IO_BUF_END=`grep IO_BUF_END $HEADER_FILE | awk '{ print $3 }' | \
  24             cut -d x -f 2 | tr a-f A-F`
  25
  26 IO_BUF_START=`grep IO_BUF_START $HEADER_FILE | awk '{ print $3 }' | \
  27               cut -d x -f 2 | tr a-f A-F`
  28
  29 FREE_SIZE=`echo "ibase=16 ; \
  30                  $CACHE_SIZE - \
  31                  ($BSS_SIZE - $TEXT_SIZE + $IO_BUF_END - $IO_BUF_START)" | \
  32            bc`
  33
  34 echo "Free cache size when cbl is loaded will be:"
  35 echo -e "\t$FREE_SIZE bytes - size of stack"
  36
  37 if [ $FREE_SIZE -lt 0 ]; then
  38         echo "Bootloader is too large! You will have to do some optimizing..."
  39         exit 1
  40 fi
  41
  42 exit 0