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authorMartinaHanusovaNXP <martina.hanusova@nxp.com>2021-04-29 16:53:49 +0200
committerAnton Komlev <Anton.Komlev@arm.com>2021-05-06 00:35:29 +0200
commit8dfc288585c4310991f427c99b809b12b079828f (patch)
tree0eac57f9bf43aa9eafda8297a11c9a8f30026a25 /platform
parent1a9eab2d1a66b77a7b29854176f38ecaab20416a (diff)
downloadtrusted-firmware-m-8dfc288585c4310991f427c99b809b12b079828f.tar.gz
Platform: Added PyOCD support into scripts for LPCxpresso55s69
Added support for PyOCD flashing into the scripts for LPCxpresso5569 and also updated README file. Signed-off-by: MartinaHanusovaNXP <martina.hanusova@nxp.com> Change-Id: Iccacfb78474a3b48e2c279e4a45e25a639370802
Diffstat (limited to 'platform')
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/README.rst144
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo.py2
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo_bl2.py2
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_regression.py2
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash.py34
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_JLink.py36
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_PyOCD.py14
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2.py33
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_JLink.py37
-rw-r--r--platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_PyOCD.py15
10 files changed, 211 insertions, 108 deletions
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/README.rst b/platform/ext/target/nxp/lpcxpresso55s69/README.rst
index 108209457..f3ae84a5d 100644
--- a/platform/ext/target/nxp/lpcxpresso55s69/README.rst
+++ b/platform/ext/target/nxp/lpcxpresso55s69/README.rst
@@ -6,13 +6,13 @@ LPCXpresso55S69
1. Building TF-M
****************
-There are two options for TF-M build - with or without secondary bootloader (BL2).
+There are two options for the TF-M build - with or without secondary bootloader (BL2).
1.1 Building TF-M demo without BL2
==================================
-To build a S and NS application image for the LPCXpresso55S69 run the ``build_tfm_demo.py`` script in ``platform/ext/target/nxp/lpcxpresso55s69/scripts``
+To build S and NS application image for the LPCXpresso55S69, run the ``build_tfm_demo.py`` script in ``platform/ext/target/nxp/lpcxpresso55s69/scripts``
-Or do it manually using following commands:
+Or do it manually using the following commands:
.. code:: bash
@@ -22,10 +22,10 @@ Or do it manually using following commands:
1.2 Building TF-M demo with BL2
===============================
-To build a S and NS application along with a BL2 (bootloader) image for the
+To build S and NS application along with a BL2 (bootloader) image for the
LPCXpresso55S69 run the ``build_tfm_demo_bl2.py`` script in ``platform/ext/target/nxp/lpcxpresso55s69/scripts``
-Or do it manually using following commands:
+Or do it manually using the following commands:
.. code:: bash
@@ -35,7 +35,7 @@ Or do it manually using following commands:
1.3 Building TF-M regression tests
==================================
-To run the S and NS regression tests (``TEST_S=ON`` and ``TEST_NS=ON``) the
+To run the S and NS regression tests (``TEST_S=ON`` and ``TEST_NS=ON``), the
secondary image areas must be set to 0 (firmware updates are not possible).
Use the ``build_tfm_regression.py`` script in ``platform/ext/target/nxp/lpcxpresso55s69/scripts``
or do it manually using following commands:
@@ -51,19 +51,26 @@ or do it manually using following commands:
cannot be run on the board without modifying the flash layout due to the
amount of available on-chip flash memory.
-******************************
-2. Flashing with Segger J-Link
-******************************
+****************
+2. Flashing TF-M
+****************
+
+After generating the binaries, there are three options to flash them using:
+ 1) **External Segger J-Link flasher**
+ 2) **On-board J-Link debugger** - with update of LPC-Link2 debugger to the Segger J-Link firmware
+ 3) **PyOCD** - supports both DAPLink and J-Link interfaces. The LPCXpresso55S69 boards, by default, use DAPLink firmware.
+
+2.1 Flashing with Segger J-Link
+===============================
-The LPCXpresso55S69 ships, by default, uses DAPLink firmware.
For command line flashing it is recommended to use external Segger J-Link flasher or to
update the LPC-Link 2 debugger on the development board with the firmware provided by Segger,
which makes the device behave as if there is an on-board J-Link debugger.
For onboard J-Link debugger option please follow this step:
-2.1 Update the LPC-Link 2 to Segger J-Link
-==========================================
+2.1.1 Update the LPC-Link 2 to Segger J-Link
+--------------------------------------------
- Install a recent version of the `J-Link Software and Documentation
Pack <https://www.segger.com/downloads/jlink#J-LinkSoftwareAndDocumentationPack>`__.
@@ -85,19 +92,19 @@ For onboard J-Link debugger option please follow this step:
$ ./program_JLINK ../probe_firmware/LPCXpressoV2/Firmware_JLink_LPCXpressoV2_20190404.bin
-Then remove link on the DFU jumper and power cycle.
+Then remove the link on the DFU jumper and power cycle.
-2.2 Flash images with ``JLinkCommander``
-========================================
+2.1.2 Flash images with ``JLinkCommander``
+------------------------------------------
-To flash TF-M images you can use the flash scripts provided in ``platform/ext/target/nxp/lpcxpresso55s69/scripts`` folder:
- - ``flash.py`` - for uploading image without BL2
- - ``flash_bl2.py`` - for uploading image with BL 2
+To flash TF-M images use the flash scripts provided in ``platform/ext/target/nxp/lpcxpresso55s69/scripts`` folder:
+ - ``flash_JLink.py`` - for uploading image without BL2
+ - ``flash_bl2_JLink.py`` - for uploading image with BL2
-Or you can do it manually according the following steps:
+Or you can do it manually according to paragraph ``2.1.2.1``.
-2.2.1 Connect to the board using ``JLinkCommander``
----------------------------------------------------
+2.1.2.1 Connect to the board using ``JLinkCommander``
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
**Windows:**
::
@@ -133,26 +140,69 @@ Or you can do it manually according the following steps:
...
Cortex-M33 identified.
-2.2.2 Flash the builded images
-------------------------------
+2.1.2.2 Flash the built images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-If you builded TF-M with the BL2 secondary bootloader use following commands:
+If you built TF-M with the BL2 secondary bootloader, use following commands:
::
- J-Link> loadfile bin/bl2.hex
- J-Link> loadfile bin/tfm_s_signed.bin 0x00008000
- J-Link> loadfile bin/tfm_ns_signed.bin 0x00030000
+ J-Link> loadfile ${BUILD_DIR}/bl2.hex
+ J-Link> loadfile ${BUILD_DIR}/tfm_s_signed.bin 0x00008000
+ J-Link> loadfile ${BUILD_DIR}/tfm_ns_signed.bin 0x00030000
-When BL2 is disabled, generate Intel hex files from the output axf (elf)
-files and then flash the secure and non-secure images:
+When BL2 is disabled, flash the generated hex secure and non-secure images:
::
- $ arm-none-eabi-objcopy -S -O ihex bin/tfm_s.axf tfm_s.hex
- $ arm-none-eabi-objcopy -S -O ihex bin/tfm_ns.axf tfm_ns.hex
+ J-Link> loadfile ${BUILD_DIR}/tfm_s.hex
+ J-Link> loadfile ${BUILD_DIR}/tfm_ns.hex
+
+2.2 Flashing with PyOCD
+=======================
+PyOCD is an open source Python package for programming and debugging Arm Cortex-M microcontrollers using multiple supported types of USB debug probes.
+See: `PyOCD <https://pypi.org/project/pyocd/>`__
+
+To flash TF-M images with PyOCD you can use the flash scripts provided in ``platform/ext/target/nxp/lpcxpresso55s69/scripts`` folder:
+ - ``flash_PyOCD.py`` - for uploading image without BL2
+ - ``flash_bl2_PyOCD.py`` - for uploading image with BL2
+
+You should get the following output (flashing without BL2):
::
- J-Link> loadfile tfm_s.hex
- J-Link> loadfile tfm_ns.hex
+ $ python flash_PyOCD.py
+ 0001749:INFO:eraser:Mass erasing device...
+ 0001749:INFO:eraser:Erasing chip...
+ 0001902:INFO:eraser:Done
+ 0001902:INFO:eraser:Successfully erased.
+ [====================] 100%
+ 0007694:INFO:loader:Erased 262144 bytes (8 sectors), programmed 203776 bytes (398 pages), skipped 0 bytes (0 pages) at 33.91 kB/s
+ [====================] 100%
+ 0005187:INFO:loader:Erased 131072 bytes (4 sectors), programmed 121856 bytes (238 pages), skipped 0 bytes (0 pages) at 34.13 kB/s
+
+
+Or do it manually according the following steps:
+
+If you built TF-M with the BL2 secondary bootloader, use the following commands:
+::
+
+ $ pyocd erase --mass -t LPC55S69
+ $ pyocd flash ${BUILD_DIR}/tfm_s.hex -t LPC55S69
+ $ pyocd flash ${BUILD_DIR}/tfm_ns.hex -t LPC55S69
+
+When BL2 is disabled, flash the generated hex secure and non-secure images:
+::
+
+ $ pyocd erase --mass -t LPC55S69
+ $ pyocd flash ${BUILD_DIR}/bl2.hex -t LPC55S69
+ $ pyocd flash ${BUILD_DIR}/tfm_s_signed.bin --base-address 0x8000 -t LPC55S69
+ $ pyocd flash ${BUILD_DIR}/tfm_ns_signed.bin --base-address 0x30000 -t LPC55S69
+
+.. Note::
+
+ At present, the reset target command does not seem to respond, so you can reset the device to start firmware execution via the physical RESET button (S4). There is sometimes also a stability issue with the flash erasing, so if the script freezes, it is needed to terminate the script, physically reset the target an rerun it again.
+
+.. Warning::
+
+ When using PyOCD on Windows, there might currently occur an issue with the ``libusb`` library. In that case, download the ``libusb`` library from `here <https://libusb.info/>`__ and copy .DLL file into the Python installation folder (next to python.exe)
************
3. Debugging
@@ -176,7 +226,7 @@ configure a new project on Ozone as follows:
- Host Interface: USB
- Program File: build/secure\_fw/tfm\_s.axf (etc.)
-Once the project has been setup, and the firmware has previously been
+Once the project has been set up, and the firmware has previously been
flashed to the board, connect to the target via:
- Debug > Start Debug Session > Attach to a Running Program
@@ -190,18 +240,28 @@ another appropriate location, and reset the device to debug.
======================
**NOTE**: If you are debugging, make sure to set the
- ``-DCMAKE_BUILD_TYPE`` value to ``-DCMAKE_BUILD_TYPE=Debug`` when
+ build type variable to ``-DCMAKE_BUILD_TYPE=Debug`` when
building TF-M so that debug information is available to GDB.
- **NOTE**: When debugging with the mbed-crypto library, you also require an
+ **NOTE**: When debugging with the mbed-crypto library, it is needed to add an
additional ``-DMBEDCRYPTO_BUILD_TYPE=DEBUG`` compile-time switch.
3.2.1 Start the GDB server, pointing to the secure application image:
---------------------------------------------------------------------
+You can use JLinkGDBServer or PyOCD server depending on the interface configured in the previous step.
+
+**J-Link GDB server:**
+
.. code:: bash
JLinkGDBServer -device lpc55s69 -if swd -speed 2000
+
+**PyOCD GDB server:**
+
+.. code:: bash
+
+ pyocd gdbserver -f 2000k -t LPC55S69
3.2.2 Connecting to the GDB server
----------------------------------
@@ -212,7 +272,7 @@ In a separate terminal, start the GDB client in ``tui`` (text UI) mode:
$ arm-none-eabi-gdb --tui secure_fw/tfm_s.axf
-Then from the client connect to the remote GDB server we started
+Then from the client connect to the remote GDB server that was started
earlier:
With ``JLinkGDBServer`` (default port 2331):
@@ -221,6 +281,14 @@ With ``JLinkGDBServer`` (default port 2331):
(gdb) target remote:2331
Remote debugging using :2331
+
+With ``pyocd gdbserver`` (default port 3333):
+
+.. code:: bash
+
+ (gdb) target remote:3333
+ Remote debugging using :3333
+
3.2.3 Reset and stop at ``main``
--------------------------------
@@ -270,7 +338,7 @@ common problems.
--------------
+*Copyright (c) 2021, NXP Semiconductors. All rights reserved.*
*Copyright (c) 2020, Linaro. All rights reserved.*
*Copyright (c) 2020, Arm Limited. All rights reserved.*
-*Copyright (c) 2021, NXP Semiconductors. All rights reserved.*
*SPDX-License-Identifier: BSD-3-Clause* \ No newline at end of file
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo.py
index 267a04cf5..7c0980d64 100644
--- a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo.py
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo.py
@@ -1,6 +1,6 @@
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# Copyright (c) 2020, Linaro. All rights reserved.
# Copyright (c) 2020, Arm Limited. All rights reserved.
-# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
import os
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo_bl2.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo_bl2.py
index 0c5f96ad7..12409e34b 100644
--- a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo_bl2.py
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_demo_bl2.py
@@ -1,6 +1,6 @@
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# Copyright (c) 2020, Linaro. All rights reserved.
# Copyright (c) 2020, Arm Limited. All rights reserved.
-# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
import os
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_regression.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_regression.py
index 07b968fbe..82a083bf7 100644
--- a/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_regression.py
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/build_tfm_regression.py
@@ -1,6 +1,6 @@
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# Copyright (c) 2020, Linaro. All rights reserved.
# Copyright (c) 2020, Arm Limited. All rights reserved.
-# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
import os
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash.py
deleted file mode 100644
index 711eaebca..000000000
--- a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash.py
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright (c) 2020, Linaro. All rights reserved.
-# Copyright (c) 2020, Arm Limited. All rights reserved.
-# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
-# SPDX-License-Identifier: BSD-3-Clause
-
-import os
-import platform
-
-os.chdir('../../../../../../build')
-os.system('arm-none-eabi-objcopy -S -O ihex bin/tfm_s.axf tfm_s.hex')
-os.system('arm-none-eabi-objcopy -S -O ihex bin/tfm_ns.axf tfm_ns.hex')
-
-# Flash with JLinkExe
-
-FILE = "flash.jlink"
-if os.path.isfile(FILE):
- if platform.system() == 'Windows':
- os.system('del /f FILE')
- else:
- os.system('rm -rf FILE')
-
-os.system('echo r >> ' + FILE)
-os.system('echo erase >> ' + FILE)
-os.system('echo loadfile tfm_s.hex >> ' + FILE)
-os.system('echo loadfile tfm_ns.hex >> ' + FILE)
-os.system('echo r >> ' + FILE)
-os.system('echo go >> ' + FILE)
-os.system('echo exit >> ' + FILE)
-
-if platform.system() == 'Windows':
- os.system('JLink -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' + FILE)
-
-else:
- os.system('JLinkExe -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' +FILE)
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_JLink.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_JLink.py
new file mode 100644
index 000000000..0aeb477d5
--- /dev/null
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_JLink.py
@@ -0,0 +1,36 @@
+# Copyright (c) 2020, Linaro. All rights reserved.
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause
+
+import os
+import platform
+
+# Move to the TFM build folder
+os.chdir('../../../../../../build/bin')
+
+# Define JLink configuration script file
+FILE = "flash.jlink"
+
+# Remove previous flash.jlink script file
+if os.path.isfile(FILE):
+ if platform.system() == 'Windows':
+ os.system('del /f /q FILE')
+ else:
+ os.system('rm -rf FILE')
+
+# Write the JLink configuration into flash.jlink script
+os.system('echo r >> ' + FILE) # reset the target
+os.system('echo erase >> ' + FILE) # erase the flash memory
+os.system('echo loadfile tfm_s.hex >> ' + FILE) # flash the secure image into target
+os.system('echo loadfile tfm_ns.hex >> ' + FILE) # flash the non-secure image into target
+os.system('echo r >> ' + FILE) # reset the target
+os.system('echo go >> ' + FILE) # run the program
+os.system('echo exit >> ' + FILE) # exit the JLinkCommander
+
+# Upload the configuration from flash.jlink script into the target device
+if platform.system() == 'Windows':
+ os.system('JLink -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' + FILE)
+
+else:
+ os.system('JLinkExe -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' +FILE)
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_PyOCD.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_PyOCD.py
new file mode 100644
index 000000000..00321d417
--- /dev/null
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_PyOCD.py
@@ -0,0 +1,14 @@
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause
+
+import os
+
+# Move to the TFM build folder
+os.chdir('../../../../../../build/bin')
+
+target = 'LPC55S69'
+
+# Flash with PyOCD
+os.system('pyocd erase --mass -t ' + target) # erase the flash memory
+os.system('pyocd flash tfm_s.hex -t ' + target) # flash the secure image into target
+os.system('pyocd flash tfm_ns.hex -t ' + target) # flash the non-secure image into target
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2.py
deleted file mode 100644
index f7f96fbf0..000000000
--- a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# Copyright (c) 2020, Linaro. All rights reserved.
-# Copyright (c) 2020, Arm Limited. All rights reserved.
-# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
-# SPDX-License-Identifier: BSD-3-Clause
-
-import os
-import platform
-
-os.chdir('../../../../../../build')
-
-# Flash with JLinkExe
-
-FILE = "flash.jlink"
-if os.path.isfile(FILE):
- if platform.system() == 'Windows':
- os.system('del /f FILE')
- else:
- os.system('rm -rf FILE')
-
-os.system('echo r >> ' + FILE)
-os.system('echo erase >> ' + FILE)
-os.system('echo loadfile bin/bl2.hex >> ' + FILE)
-os.system('echo loadfile bin/tfm_s_signed.bin 0x8000 >> ' + FILE)
-os.system('echo loadfile bin/tfm_ns_signed.bin 0x30000 >> ' + FILE)
-os.system('echo r >> ' + FILE)
-os.system('echo go >> ' + FILE)
-os.system('echo exit >> ' + FILE)
-
-if platform.system() == 'Windows':
- os.system('JLink -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' + FILE)
-
-else:
- os.system('JLinkExe -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' +FILE)
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_JLink.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_JLink.py
new file mode 100644
index 000000000..88f2ccfd3
--- /dev/null
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_JLink.py
@@ -0,0 +1,37 @@
+# Copyright (c) 2020, Linaro. All rights reserved.
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause
+
+import os
+import platform
+
+# Move to the TFM build folder
+os.chdir('../../../../../../build/bin')
+
+# Define JLink configuration script file
+FILE = "flash.jlink"
+
+# Remove previous flash.jlink script file
+if os.path.isfile(FILE):
+ if platform.system() == 'Windows':
+ os.system('del /f /q FILE')
+ else:
+ os.system('rm -rf FILE')
+
+# Write the JLink configuration into flash.jlink script
+os.system('echo r >> ' + FILE) # reset the target
+os.system('echo erase >> ' + FILE) # erase the flash memory
+os.system('echo loadfile bl2.hex >> ' + FILE) # flash the bootloader file into target
+os.system('echo loadfile tfm_s_signed.bin 0x8000 >> ' + FILE) # flash the signed secure image into target
+os.system('echo loadfile tfm_ns_signed.bin 0x30000 >> ' + FILE) # flash the signed non-secure image into target
+os.system('echo r >> ' + FILE) # reset the target
+os.system('echo go >> ' + FILE) # run the program
+os.system('echo exit >> ' + FILE) # exit the JLinkCommander
+
+# Upload the configuration from flash.jlink script into the target device
+if platform.system() == 'Windows':
+ os.system('JLink -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' + FILE)
+
+else:
+ os.system('JLinkExe -device lpc55s69 -if swd -speed 2000 -autoconnect 1 -commanderscript ' +FILE)
diff --git a/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_PyOCD.py b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_PyOCD.py
new file mode 100644
index 000000000..094989906
--- /dev/null
+++ b/platform/ext/target/nxp/lpcxpresso55s69/scripts/flash_bl2_PyOCD.py
@@ -0,0 +1,15 @@
+# Copyright (c) 2021, NXP Semiconductors. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause
+
+import os
+
+# Move to the TFM build folder
+os.chdir('../../../../../../build/bin')
+
+target = 'LPC55S69'
+
+# Flash with PyOCD
+os.system('pyocd erase --mass -t ' + target) # erase the flash memory
+os.system('pyocd flash bl2.hex -t ' + target) # flash the secure image into target
+os.system('pyocd flash tfm_s_signed.bin --base-address 0x8000 -t ' + target) # flash the signed secure image into target
+os.system('pyocd flash tfm_ns_signed.bin --base-address 0x30000 -t ' + target) # flash the signed non-secure image into target