topic Programming SD Card over IDE (JTAG) in i.MX RT Crossover MCUs

Programming SD Card over IDE (JTAG)

abady1000 — Wed, 16 Apr 2025 13:53:51 GMT

Hello,

I have a custom board which contains SD Card and Macronix QSPI flash.

I was able to run SD Card but QSPI needs some modifications to get it working from Macronix QSPI.

Anyway, currently I am flashing my application to SD Card using Secure Provisioning Tool.

But it is painful to do this every time (build the application, build SD Image, Reset chip to Serial Downloader mode, Flash the image, return to SD Boot mode).

My questions are:

- Could I program the SD Card using JTAG port? (So I don't need to change the chip mode)

If this is not possible:
- Could I make a single script that (Build application, Create SD Boot Image, Flash the image)?

Note: I know SD is not meant to be used this way, but It is my only option right now, so I want to live with it

Thank you.

Re: Programming SD Card over IDE (JTAG)

abady1000 — Thu, 17 Apr 2025 07:10:17 GMT

Any insights about this?

Re: Programming SD Card over IDE (JTAG)

Kan_Li — Fri, 18 Apr 2025 08:16:31 GMT

Hi @abady1000 ,

Please kindly have my comments as below:

- Could I program the SD Card using JTAG port? (So I don't need to change the chip mode)

- Yes，it is possible, but you have to develop a new flash loader for that purpose.

- Could I make a single script that (Build application, Create SD Boot Image, Flash the image)?

- Yes, it is possible, and that is also part of the SPT's task, but in this case, the SPSDK should be used. Please kindly refer to https://www.nxp.com/design/design-center/software/development-software/secure-provisioning-sdk-spsdk:SPSDK for details.

Have a great day,
Kan

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