i.MX RT Crossover MCUsのトピックRe: OTFAD with FlexSPI in code

OTFAD with FlexSPI in code

AChun — Tue, 28 Jun 2022 01:59:20 GMT

I am using IMXRT1010EVK board with NXP-MCUBootUtility-v3.5.0.

I use the function “ flexspi_nor_flash_init(EXAMPLE_FLEXSPI)”,

and blink the led after the function.

It failed while i choose OTFAD as my secure Type, I follow

the post “Use FlexSPI while decrypted with OTFAD”, change code to the the following

{ //OTFAD->CR &= ~OTFAD_CR_GE_MASK; backupendaddr = OTFAD->CTX[0].RGD_W1; OTFAD->CTX[0].RGD_W1 = OTFAD->CTX[0].RGD_W0; //flexspi_nor_flash_init(EXAMPLE_FLEXSPI); OTFAD->CTX[0].RGD_W1 = backupendaddr; //OTFAD->CR |= OTFAD_CR_GE(1); }

The led blink with OTFAD when i commet the function “flexspi_nor_flash_init(EXAMPLE_FLEXSPI)”.

data.ldt:

<#if memory.name=="SRAM_ITC"> *flexspi_nor_flash_ops.o(.text*) *fsl_flexspi.o(.text*) </#if>

main_text.ldt:

*(EXCLUDE_FILE(*flexspi_nor_flash_ops.o *fsl_flexspi.o) .text*)

The program is in XIP mode.

Re: OTFAD with FlexSPI in code

jeremyzhou — Fri, 01 Jul 2022 06:20:30 GMT

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Actually, I'm not very clear with this question, whether you mean the evkmimxrt1170_flexspi_nor_polling_transfer_cm7 can't work well after enabling encrypted XiP with OTFAD.
Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------

Re: OTFAD with FlexSPI in code

AChun — Mon, 04 Jul 2022 02:36:28 GMT

I'm using the flexspi example code for the IMXRT1010EVK board. Add the blinking code after the function "flexspi_nor_flash_init".

BOARD_ConfigMPU(); BOARD_InitBootPins(); BOARD_BootClockRUN(); BOARD_InitDebugConsole(); SCB_DisableDCache(); flexspi_nor_flash_init(EXAMPLE_FLEXSPI); PRINTF("\r\nFLEXSPI example started!\r\n"); /* Set systick reload value to generate 1ms interrupt */ if (SysTick_Config(SystemCoreClock / 1000U)) { while (1); } while (1) { if(delay_timer==0) { delay_timer = 500; LED_toggle(); } }

Following the article , I have change the function "BOARD_BootClockRUN()".

It blinks the led If I commet the function "flexspi_nor_flash_init".

Or I change the secure boot Type to "HAB signed Image Boot".

How can it work on OTFAD Mode with the flexspi_nor_flash_init and blinky in code?

Re: OTFAD with FlexSPI in code

jeremyzhou — Mon, 04 Jul 2022 08:09:53 GMT

Hi,
Thanks for your reply.
Firstly, I'd like to know your Advanced Key Settings, next, in the flexspi_nor_polling_transfer demo, the flexspi_nor_flash_init will be relocated to the RAM after booting up, so it shouldn't be affected by the restriction mentioned in the article.

jeremyzhou_0-1656922179485.png

Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

Re: OTFAD with FlexSPI in code

AChun — Tue, 05 Jul 2022 00:53:30 GMT

Here is the NXP-MCUBootUtility-v3.5.0. "Advanced Key Settings".

Advanced Key Settings.png

The setting is work (led blinky) when I commet the function "flexspi_nor_flash_init".

Also, I confirm the map, the function "flexspi_nor_flash_init" is definitely located in RAM.

flexspiinram.png

Re: OTFAD with FlexSPI in code

jeremyzhou — Tue, 05 Jul 2022 03:18:18 GMT

Hi,
Thanks for your reply.
Can you share the read result of eFuse in the NXP-MCUBootUtility-v3.5.0?
@jay_heng Can you share some insight into the phenomenon?
Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

Re: OTFAD with FlexSPI in code

AChun — Tue, 05 Jul 2022 05:10:08 GMT

The fuse is got here.

fuse_setting.png

Re: OTFAD with FlexSPI in code

jay_heng — Tue, 05 Jul 2022 06:44:58 GMT

The issue is caused by FlexSPI reset way, please refer to my blog

https://www.cnblogs.com/henjay724/p/14479276.html