diff --git a/test/hooks/bin/flash.sdwire_ykush_mount b/test/hooks/bin/flash.sdwire_ykush_mount
new file mode 100644
index 00000000000..bd60dc38d7f
--- /dev/null
+++ b/test/hooks/bin/flash.sdwire_ykush_mount
@@ -0,0 +1,68 @@
+# Copyright 2019 Google LLC. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# Designed for using SDwire uSD myx and ykush USB power control:
+# https://wiki.tizen.org/SDWire
+# https://www.yepkit.com/products/ykush
+
+# It requires these tools:
+# sd-mux-ctrl at https://git.tizen.org/cgit/tools/testlab/sd-mux/
+# ykushcmd at https://github.com/Yepkit/ykush
+
+mount_dir=/media/${mount_point}
+
+# Power off
+ykushcmd -s ${ykush_serial} -d ${ykush_port}
+
+# Switch over to get USB card access
+sd-mux-ctrl --device-serial ${sdwire_serial} --ts
+
+done=false
+for i in {0..9}; do
+    if out="$(mount UUID=${mount_uuid} 2>&1)"; then
+        done=true
+        break
+    fi
+    echo $out
+
+    # If it is already mounted, try to unmount it first. It may have been
+    # mounted by another user so we won't have the access we need. If this gives
+    # an error then we know we cannot continue
+    if [[ $out == *"already mounted"* ]]; then
+        umount UUID=${mount_uuid}
+    fi
+    sleep 1
+done
+if [[ $done = false ]]; then
+    echo "Failed to mount UUID ${mount_uuid} after 10 tries"
+    exit 1
+fi
+
+# Sanity check
+if ! mountpoint -q ${mount_dir}; then
+    echo "Mount ${mount_dir} not available after 'mount'"
+    exit 1
+fi
+
+writer.${flash_writer} ${mount_dir} ${U_BOOT_BUILD_DIR}
+umount ${mount_dir}
+
+# Back to card access for the DUT
+sd-mux-ctrl --device-serial ${sdwire_serial} --dut
diff --git a/test/hooks/bin/poweroff.ykush b/test/hooks/bin/poweroff.ykush
new file mode 100644
index 00000000000..fe03df70e2b
--- /dev/null
+++ b/test/hooks/bin/poweroff.ykush
@@ -0,0 +1,23 @@
+# Copyright 2019 Google LLC. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# Usees YKUSB to power the device off
+
+ykushcmd -s ${ykush_serial} -d ${ykush_port}
diff --git a/test/hooks/bin/poweron.ykush b/test/hooks/bin/poweron.ykush
new file mode 100644
index 00000000000..5a541eccffd
--- /dev/null
+++ b/test/hooks/bin/poweron.ykush
@@ -0,0 +1,23 @@
+# Copyright 2019 Google LLC. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# Usees YKUSB to power the device on
+
+ykushcmd -s ${ykush_serial} -u ${ykush_port}
diff --git a/test/hooks/bin/reset.ykush b/test/hooks/bin/reset.ykush
new file mode 100644
index 00000000000..f328eec5db8
--- /dev/null
+++ b/test/hooks/bin/reset.ykush
@@ -0,0 +1,25 @@
+# Copyright 2019 Google LLC. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# Usees YKUSB to power the device off and then on
+
+ykushcmd -s ${ykush_serial} -d ${ykush_port}
+sleep 1
+ykushcmd -s ${ykush_serial} -u ${ykush_port}
diff --git a/test/hooks/bin/writer.rpi3_mount b/test/hooks/bin/writer.rpi3_mount
new file mode 100755
index 00000000000..7b078a168f2
--- /dev/null
+++ b/test/hooks/bin/writer.rpi3_mount
@@ -0,0 +1,49 @@
+# Copyright 2019 Google LLC. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+# DEALINGS IN THE SOFTWARE.
+
+# Writes rpi3_b to the board
+
+# Args:
+#  $1: Mount point of the sdcard when board is off
+#  $2: U-Boot build directory
+
+set -ex
+
+mount=$1
+build=$2
+
+echo "Writing to ${mount} from build at ${build}"
+
+# First make a copy of the original files if we haven't already
+if [[ ! -e ${mount}/config.orig ]]; then
+    cp ${mount}/config.txt ${mount}/config.orig
+fi
+if [[ ! -e ${mount}/rpi3-u-boot.bin.orig ]]; then
+    cp ${mount}/rpi3-u-boot.bin ${mount}/rpi3-u-boot.bin.orig
+fi
+
+# Enable the UART and fix the GPU frequency so it works correctly
+sed -i '/enable_uart/c\enable_uart = 1' /media/rpi3_b_boot/config.txt
+if ! grep -q gpu_freq=250 /media/rpi3_b_boot/config.txt; then
+    echo 'gpu_freq=250' >>/media/rpi3_b_boot/config.txt
+fi
+
+# Copy U-Boot over from the build directory
+cp ${build}/u-boot.bin ${mount}/rpi3-u-boot.bin