Final flash.sh fix

src/main/scripts/bin/flash.sh

@@ -1,10 +1,10 @@
 if [ "$1" == "" ]; then
-    echo "Usage: flash.sh <path to device to flash> <path to firmware file> <use Open SBI (yes/no default: no)>"
+    printf "Usage:\nflash.sh <path to flash mem> <path to firmware> <OpenSBI (yes/no default: no)>\n"
     return 1
 fi
 
 if [ "$2" == "" ]; then
-    echo "Usage: flash.sh <path to device to flash> <path to firmware file> <use Open SBI (yes/no default: no)>"
+    printf "Usage:\nflash.sh <path to flash mem> <path to firmware> <OpenSBI (yes/no default: no)>\n"
     return 1
 fi
 
@@ -16,17 +16,29 @@ if [ "$3" == "no" ]; then
     echo "Flashing without OpenSBI"
 fi
 
-echo "Proceeding will completely erase $1 and flash the firmware\n $2 to it. This process is irreversible."
+printf "Proceeding will completely erase $1 and flash your custom firmware\nto it. This process is irreversible.\n"
 
 read -p "Are you sure? " -n 1 -r
 echo
-if [[ $REPLY =~ ^[Yy]$ ]]; then
-    dd ibs=$(echo "12*1024*1024" | bc) count=1 if=/dev/zero of=$1
-    if [ "$3" = "yes" ]; then
-    	dd if=/mnt/builtin/firmware_files/fw_jump.bin of=$1
-    	dd if=$2 of=$1 seek=2097152 oflag=seek_bytes
-    else
-    	dd if=$2 of=$1
-    fi
-fi
+case "$REPLY" in
+    [yY][eE][sS]|[yY])
+        printf "Erasing current firmware..."
+        dd if=$2 of=$1 status=none # Work around for empty flash chips
+        dd ibs=$(echo "12*1024*1024" | bc) count=1 if=/dev/zero of=$1 status=none
+        printf " Done\n"
+        if [ "$3" = "yes" ]; then
+            printf "Flashing OpenSBI..."
+            dd if=/mnt/builtin/firmware_files/fw_jump.bin of=$1 status=none
+            printf " Done\n"
+            printf "Flashing custom firmware..."
+            dd if=$2 of=$1 seek=2097152 oflag=seek_bytes status=none
+            printf " Done\n"
+        else
+            printf "Flashing custom firmware..."
+            dd if=$2 of=$1 status=none
+            printf " Done\n"
+        fi
+        ;;
+    *)
+esac