RT700 LinkServer Documentation Request

prathamvora — Wed, 25 Feb 2026 23:26:36 GMT

I am working with the RT700 series MCU on the EVK board and using a CMake-based build system together with LinkServer from the command line (outside of MCUXpresso IDE). The IDE example projects run correctly on my setup.

I am trying to gain a deeper understanding of the overall architecture and tooling. I am looking for clear and complete documentation covering:

Full list of LinkServer CLI options.
Structure and purpose of .scp script files
Device JSON configuration format and how flash drivers are defined
How the flash programming algorithm is selected and executed from RAM
The interaction between SCP scripts, JSON configuration, and the target device
Any official guide describing how to develop a custom memory/flash loader

Additionally, I would appreciate clarification regarding:

The purpose of the .flash_config section in the linker script
Where this section is required to be placed (offset and memory region)
Which reference manual or document specifies this requirement

For secure boot applications, I would also like guidance on:

The recommended utility to sign an ELF/image for RT700
Whether the signing tool supports command-line usage
Documentation describing the signing flow and documentation for signing tool

Is there a detailed user guide, reference manual, or architectural documentation that explains these components and requirements clearly.

Re: RT700 LinkServer Documentation Request

mayliu1 — Fri, 27 Feb 2026 10:02:38 GMT

Hi @prathamvora ,

Thank you so much for your interest in our products and for using our community.

A1: LinkServer CLI .scp scripts device JSON files

LinkServer is NXP’s standalone GDB server and flash programming tool. It can be used outside the MCUXpresso IDE.

LinkServer for Microcontrollers | NXP Semiconductors

https://www.nxp.com/docs/en/user-guide/UG10219.pdf

You can view all available command-line options by running:

linkserver --help

linkserver gdbserver --help

linkserver flash --help

The .scp script files are used by LinkServer to control connect, reset ,and so on.
you can open the RT700_reset.scp script to examine the structure and commands used for reference.

You can find device JSON under:

C:\nxp\LinkServer_25.12.83\devices\ MIMXRT700-EVK.json

The JSON file contains definitions for memory map, flash regions, flash drivers...

A2: Purpose of the .flash_config section

Could you clarify where you saw the .flash_config section?

For RT700 I strongly recommend reviewing this application note:

AN14821 – RT700 Secure Boot and Image Structure
https://www.nxp.com/webapp/Download?colCode=AN14821&location=null&isHTMLorPDF=HTML

This AN explains the image header, boot flow, and memory layout required for RT700 secure and non-secure images.

A3: Signing tools for RT700 secure boot

For signing RT700 images, the recommended tool is:

MCUXpresso Secure Provisioning (SEC) Tool

This tool provides GUI workflow, and Full command-line interface , Support for image signing, certificate handling...

For more detail information, you can refer to the below link.

MCUXpresso Secure Provisioning Tool Documentation
https://docs.mcuxpresso.nxp.com/secure/latest/06_processor_specific_workflow.html#id13

Wish it helps you

Best Regards

Mayliu

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RT700 LinkServer Documentation Request

Re: RT700 LinkServer Documentation Request