From 24032c07328cd2ed9b7c2e57d63d351d52425cf0 Mon Sep 17 00:00:00 2001
From: osm0sis <osm0sis@outlook.com>
Date: Sun, 2 Jun 2019 15:44:49 -0300
Subject: [PATCH] AK3: allow workaround for dtbo devices with cat /dev/zero
 issues - some device recoveries (e.g. TWRP for wahoo) seem to have issues
 with the new `cat <image> /dev/zero > <block>` method of flashing, so allow
 setting customdd="bs=1048576" shell variable in anykernel.sh to work around
 this by reverting back to dd wipe+flash for dtbo as it does with boot

---
 tools/ak3-core.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/ak3-core.sh b/tools/ak3-core.sh
index 20fdac2..e7bb456 100755
--- a/tools/ak3-core.sh
+++ b/tools/ak3-core.sh
@@ -345,6 +345,9 @@ flash_dtbo() {
     if [ -f "$bin/flash_erase" -a -f "$bin/nandwrite" ]; then
       $bin/flash_erase $dtboblock 0 0;
       $bin/nandwrite -p $dtboblock $dtbo;
+    elif [ "$customdd" ]; then
+      dd if=/dev/zero of=$dtboblock 2>/dev/null;
+      dd if=$dtbo of=$dtboblock;
     else
       cat $dtbo /dev/zero > $dtboblock 2>/dev/null;
     fi;