Fixed regression on powerfail resume

Author: danielinux

src/update_flash.c

@@ -464,10 +464,7 @@ static int RAMFUNCTION wolfBoot_update(int fallback_allowed)
         if (flag != SECT_FLAG_NEW &&
             wolfBoot_get_partition_state(PART_UPDATE, &st) == 0 &&
             st == IMG_STATE_UPDATING) {
-            if (cur_v == up_v) {
-                inverse = 0;
-            }
-            else if (cur_v < up_v) {
+            if ((cur_v == 0) || (cur_v == up_v)) {
                 inverse = 1;
                 inverse_resume = 1;
             }

tools/scripts/sim-update-powerfail-resume.sh

@@ -38,8 +38,13 @@ if [ "x$V" != "x1" ]; then
 fi
 
 if [ "x$V" != "x1" ]; then
-    echo "Failed fallback (V: $V)"
-    exit 1
+    echo "Did not fallback (V: $V)"
+    echo "Retrying get_version after reboot..."
+    V=`./wolfboot.elf get_version 2>/dev/null`
+    if [ "x$V" != "x1" ]; then
+        echo "Error: failed fallback (V: $V)"
+        exit 1
+    fi
 fi
 
 echo Test successful.