get and prepare u-boot sources for building

install_uboot.sh

+#!/bin/bash
+
+#get the current script path
+SCRIPT=$(readlink -f "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+
+#constants
+UBOOT_TREE="$SCRIPTPATH/u-boot-tree"
+CONFIGS="include/configs"
+EZYNQ="ezynq"
+REPO_DIR_NAME=u-boot-xlnx
+
+SUFFIX=".orig"
+
+INITENV="initenv"
+OVERWRITE_INITENV=1
+CROSS_COMPILE="arm-poky-linux-gnueabi-"
+COMPILE_PATH="/opt/poky/1.4/sysroots/x86_64-pokysdk-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi/"
+
+echo "Step 1: Cloning Xilinx's u-boot repository (master-next branch)"
+if [ ! -d "$REPO_DIR_NAME/.git" ]; then
+  git clone -b master-next https://github.com/Xilinx/u-boot-xlnx.git "$REPO_DIR_NAME"
+else
+  echo "  Already there"
+fi
+
+echo "Step 2: Checking out u-boot version with the hash 'e1808144fdbc79159b72318e6eb8bcab03fd9bf4'"
+cd "$REPO_DIR_NAME"
+git checkout e1808144fdbc79159b72318e6eb8bcab03fd9bf4
+
+echo "Step 3: Merging ezynq with u-boot"
+
+echo "Step 3a: Creating symbolic link for the root folder"
+if [ ! -h $EZYNQ ]; then
+  ln -s $SCRIPTPATH $EZYNQ
+fi
+
+echo "Step 3b: Creating symbolic link for the 'ezynq' folder"
+if [ ! -h "$CONFIGS/$EZYNQ" ]; then
+  ln -s "$UBOOT_TREE/$CONFIGS/$EZYNQ" $CONFIGS
+fi
+
+echo "Step 3c: Creating symbolic links for separate files (a suffix is added to the originals)"
+for SRC in $(find $UBOOT_TREE -type f -not -path "$UBOOT_TREE/$CONFIGS/$EZYNQ/*")
+do
+  LINK=$(echo $SRC | sed "s:^$UBOOT_TREE/::")
+  #echo "$SRC | $LINK"
+  if [ ! -h $LINK ]; then
+    ln -s -S $SUFFIX $SRC $LINK
+  fi
+done
+
+echo "Step 4: Creating initenv script"
+if [ -f $INITENV ]; then
+    read -p "Overwrite initenv? (y/n) " yn
+    if [ ! $yn = "y" ]; then
+      OVERWRITE_INITENV=0;
+    fi
+fi
+
+if [ $OVERWRITE_INITENV = 1 ] ; then
+  echo "#!/bin/sh
+export CROSS_COMPILE=$CROSS_COMPILE
+export PATH=$COMPILE_PATH:\$PATH" > $INITENV
+  #exec permissions are not required for source
+  #chmod +x $INITENV 
+fi
+
+if [ ! -d $COMPILE_PATH ] ; then
+  echo "  WARNING: Please edit initenv accordingly to your cross compiler path"
+fi
+
+echo "DONE"
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