mkconfig: remove bashisms and cleanup config.mk generation

This adds some cleanup to mkconfig related to SPL support.  Bash
specific script has been replaced with awk for better shell
compatibility.  config.mk generation is done through a subshell and
single redirect to improve readability.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

diff --git a/mkconfig b/mkconfig
index 9e1a7e64cc81399085a1530360d54b761f9d2233..d3363c6df37a210cd1bd02ad76286b25df9e1611 100755 (executable)
--- a/mkconfig
+++ b/mkconfig
@@ -59,12 +59,8 @@ CONFIG_NAME="${1%_config}"
 [ "${BOARD_NAME}" ] || BOARD_NAME="${1%_config}"
 
 arch="$2"
-cpu="$3"
-tmp="${cpu#*:}"
-if [ "$tmp" != "$cpu" ] ; then
-       spl_cpu=$tmp
-       cpu="${cpu%:*}"
-fi
+cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $1}'`
+spl_cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $2}'`
 if [ "$4" = "-" ] ; then
        board=${BOARD_NAME}
 else
@@ -135,21 +131,21 @@ fi
 #
 # Create include file for Make
 #
-echo "ARCH   = ${arch}"  >  config.mk
-if [ ! -z "$spl_cpu" ] ; then
-       echo 'ifeq ($(CONFIG_SPL_BUILD),y)' >> config.mk
-       echo "CPU    = ${spl_cpu}" >> config.mk
-       echo "else" >> config.mk
-       echo "CPU    = ${cpu}"   >> config.mk
-       echo "endif" >> config.mk
-else
-       echo "CPU    = ${cpu}"   >> config.mk
-fi
-echo "BOARD  = ${board}" >> config.mk
-
-[ "${vendor}" ] && echo "VENDOR = ${vendor}" >> config.mk
-
-[ "${soc}"    ] && echo "SOC    = ${soc}"    >> config.mk
+( echo "ARCH   = ${arch}"
+    if [ ! -z "$spl_cpu" ] ; then
+       echo 'ifeq ($(CONFIG_SPL_BUILD),y)'
+       echo "CPU    = ${spl_cpu}"
+       echo "else"
+       echo "CPU    = ${cpu}"
+       echo "endif"
+    else
+       echo "CPU    = ${cpu}"
+    fi
+    echo "BOARD  = ${board}"
+
+    [ "${vendor}" ] && echo "VENDOR = ${vendor}"
+    [ "${soc}"    ] && echo "SOC    = ${soc}"
+    exit 0 ) > config.mk
 
 # Assign board directory to BOARDIR variable
 if [ -z "${vendor}" ] ; then