add initial support for the crisarchitecture used on foxboards to openwrt

[openwrt/svn-archive/archive.git] / target / linux / etrax-2.6 / image / e100boot / src / cbl / free_size

diff --git a/target/linux/etrax-2.6/image/e100boot/src/cbl/free_size b/target/linux/etrax-2.6/image/e100boot/src/cbl/free_size
new file mode 100755 (executable)
index 0000000..73e1365
--- /dev/null
+++ b/target/linux/etrax-2.6/image/e100boot/src/cbl/free_size
@@ -0,0 +1,42 @@
+#!/bin/sh
+#
+# Calculates the size left in ETRAX cache when bootloader is loaded.
+#
+
+BOOT_FILE=`dirname $0`/net/net.out
+HEADER_FILE=`dirname $0`/src/e100boot.h
+
+for FILE in $BOOT_FILE $HEADER_FILE; do
+       if [ ! -f $FILE ]; then
+               echo "Could not find the file \"$FILE\"!"
+               exit 1
+       fi
+done
+
+# The cache size is given in hex
+CACHE_SIZE=2000
+
+BSS_SIZE=`nm-cris $BOOT_FILE | grep Ebss | cut -d ' ' -f 1 | tr a-f A-F`
+
+TEXT_SIZE=`nm-cris $BOOT_FILE | grep Stext | cut -d ' ' -f 1 | tr a-f A-F`
+
+IO_BUF_END=`grep IO_BUF_END $HEADER_FILE | awk '{ print $3 }' | \
+           cut -d x -f 2 | tr a-f A-F`
+
+IO_BUF_START=`grep IO_BUF_START $HEADER_FILE | awk '{ print $3 }' | \
+             cut -d x -f 2 | tr a-f A-F`
+
+FREE_SIZE=`echo "ibase=16 ; \
+                $CACHE_SIZE - \
+                ($BSS_SIZE - $TEXT_SIZE + $IO_BUF_END - $IO_BUF_START)" | \
+          bc`
+
+echo "Free cache size when cbl is loaded will be:"
+echo -e "\t$FREE_SIZE bytes - size of stack"
+
+if [ $FREE_SIZE -lt 0 ]; then
+       echo "Bootloader is too large! You will have to do some optimizing..."
+       exit 1
+fi
+
+exit 0