topic Re: MIMXRT1170-EVK Boot from Flash troubleshooting in i.MX Processors

MIMXRT1170-EVK Boot from Flash troubleshooting

PeteHawkins — Tue, 07 Nov 2023 19:06:21 GMT

I am using a MIMXRT1170-EVK with MCUXpresso and a J-Link Ultra+ for programming/debugging. This was initially working perfectly with the default QSPI NOR Flash and a variety of the SDK demo applications.

I wanted to switch to Octal Flash, so I changed the resistor and DIP switch settings, but could not get applications to run from the octal flash. The fsl_romapi_cm7 demo app linked to run from RAM also reported an error trying to identify the flash. So, I changed the resistors and DIP switches back to the initial settings for QSPI flash.

On first power up after changing things back, the last demo application I had used with the QSPI flash booted and ran as expected. The fsl_romapi_cm7 demo app (run from RAM) also runs and completes successfully. However, now when I try to program and debug a demo app from the QSPI flash, it appears to get stuck in the NXP ROM bootloader. I have quadruple checked that the resistors are set correctly (and I can apparently read and program the flash successfully), and the DIP switches are set for Internal Boot from QSPI (all switches off except SW1-3).

If I click the "pause" button in MCUXpresso, it breaks with the PC register at 0x23104, which is somewhere in the bootloader ROM. If I dump memory I see the FCFB at 0x30000400 and the Program Vector table at 0x30001030. The program vector table has a program entrypoint of 0x300024e9, and the code at 0x300024e9 appears to be a valid entry point (ResetISR) for the demo app.

How should I go about troubleshooting this to determine why it isn't booting correctly?

Thank you,

Pete

Re: MIMXRT1170-EVK Boot from Flash troubleshooting

Kan_Li — Thu, 09 Nov 2023 06:56:06 GMT

Hi @PeteHawkins ,

Which demo app was got stuck in the end? Have you run the demo of SDK_2_14_0_MIMXRT1170-EVK\boards\evkmimxrt1170\driver_examples\flexspi\nor\polling_transfer\cm7 ? did it work as expected? Please kindly clarify.

Have a great day,
Kan

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Re: MIMXRT1170-EVK Boot from Flash troubleshooting

PeteHawkins — Thu, 09 Nov 2023 17:25:34 GMT

All apps fail if run from Flash, and work if run from RAM. I have found, that switching from J-Link to CMSIS-DAP fixes the problem. If I switch back to J-Link, it fails again in the same way.

Re: MIMXRT1170-EVK Boot from Flash troubleshooting

myee_ — Mon, 04 Mar 2024 23:53:46 GMT

Hi @PeteHawkins ,

I believe I am having very similar issues. Were you ever able to come up with a solution to this problem? Thanks!!