Copy from flash to SDRAM and run

mnagoga — Wed, 12 Jun 2024 15:19:45 GMT

Hello,

I followed the document "I.MX RT - How to Boot to SDRAM" from the i.MX RT Knowledge Base but can't get it working.

Hardware:

Embedded Artists i.MX RT1064 uCOM (SDRAM 32 MB)
Segger JLink Plus

Software:

MCUXpresso 11.9.1_2170

What I did:

I linked the Hello World application from the SDK to the SDRAM.
I enabled the DCD header (XIP_BOOT_HEADER_DCD_ENABLE=1).
Looking at the memory map, it seems we have everything we need:

.boot_hdr 0x80000000 0x2000 FILL mask 0xff 0x80000000 __boot_hdr_start__ = ABSOLUTE (.) *(SORT_BY_ALIGNMENT(.boot_hdr.conf)) .boot_hdr.conf 0x80000000 0x200 ./xip/evkmimxrt1064_flexspi_nor_config.o 0x80000000 qspiflash_config 0x00001000 . = 0x1000 *fill* 0x80000200 0xe00 ff *(SORT_BY_ALIGNMENT(.boot_hdr.ivt)) .boot_hdr.ivt 0x80001000 0x20 ./xip/fsl_flexspi_nor_boot.o 0x80001000 image_vector_table 0x00001020 . = 0x1020 *(SORT_BY_ALIGNMENT(.boot_hdr.boot_data)) .boot_hdr.boot_data 0x80001020 0x10 ./xip/fsl_flexspi_nor_boot.o 0x80001020 g_boot_data 0x00001030 . = 0x1030 *(SORT_BY_ALIGNMENT(.boot_hdr.dcd_data)) .boot_hdr.dcd_data 0x80001030 0x410 ./board/dcd.o 0x80001030 dcd_data 0x80001440 __boot_hdr_end__ = ABSOLUTE (.) 0x00002000 . = 0x2000 *fill* 0x80001440 0xbc0 ff .text 0x80002000 0x4f68 FILL mask 0xff 0x80002000 __vectors_start__ = ABSOLUTE (.) *(SORT_BY_ALIGNMENT(.isr_vector)) .isr_vector 0x80002000 0x2b8 ./startup/startup_mimxrt1064.o 0x80002000 __Vectors 0x80002000 g_pfnVectors 0x800022b8 . = ALIGN (0x4) 0x800022b8 __section_table_start = . 0x800022b8 __data_section_table = .

Finally, I generated a bin file and flashed it to 0x70000000.

jlink log:

Executing flash operation 'Program' (Program executable into flash eaimxrt1064_hello_world_sdram.bin) - Wed Jun 12 08:55:41 CEST 2024 Checking MCU info... Scanning for targets... Executing flash action... SEGGER J-Link Commander V7.96c (Compiled Apr 2 2024 12:36:46) DLL version V7.96c, compiled Apr 2 2024 12:36:21 J-Link Command File read successfully. Processing script file... J-Link>ExitOnError 1 J-Link Commander will now exit on Error J-Link>r J-Link connection not established yet but required for command. Connecting to J-Link via USB...O.K. Firmware: J-Link V11 compiled Mar 14 2024 13:16:08 Hardware version: V11.00 J-Link uptime (since boot): 0d 00h 44m 27s S/N: 851006059 License(s): RDI, FlashBP, FlashDL, JFlash, GDB USB speed mode: High speed (480 MBit/s) VTref=3.305V Target connection not established yet but required for command. Device "MIMXRT1064XXX6A" selected. Connecting to target via SWD InitTarget() start InitTarget() end - Took 1.14ms Found SW-DP with ID 0x0BD11477 Failed to power up DAP InitTarget() start InitTarget() end - Took 1.27ms Found SW-DP with ID 0x0BD11477 DPIDR: 0x0BD11477 CoreSight SoC-400 or earlier Scanning AP map to find all available APs AP[1]: Stopped AP scan as end of AP map has been reached AP[0]: AHB-AP (IDR: 0x04770041) Iterating through AP map to find AHB-AP to use AP[0]: Core found AP[0]: AHB-AP ROM base: 0xE00FD000 CPUID register: 0x411FC271. Implementer code: 0x41 (ARM) Cache: L1 I/D-cache present Found Cortex-M7 r1p1, Little endian. FPUnit: 8 code (BP) slots and 0 literal slots CoreSight components: ROMTbl[0] @ E00FD000 [0][0]: E00FE000 CID B105100D PID 000BB4C8 ROM Table ROMTbl[1] @ E00FE000 [1][0]: E00FF000 CID B105100D PID 000BB4C7 ROM Table ROMTbl[2] @ E00FF000 [2][0]: E000E000 CID B105E00D PID 000BB00C SCS-M7 [2][1]: E0001000 CID B105E00D PID 000BB002 DWT [2][2]: E0002000 CID B105E00D PID 000BB00E FPB-M7 [2][3]: E0000000 CID B105E00D PID 000BB001 ITM [1][1]: E0041000 CID B105900D PID 001BB975 ETM-M7 [1][2]: E0042000 CID B105900D PID 004BB906 CTI [0][1]: E0040000 CID B105900D PID 000BB9A9 TPIU-M7 [0][2]: E0043000 CID B105F00D PID 001BB101 TSG I-Cache L1: 32 KB, 512 Sets, 32 Bytes/Line, 2-Way D-Cache L1: 32 KB, 256 Sets, 32 Bytes/Line, 4-Way Memory zones: "Default" Description: Default access mode Cortex-M7 identified. Reset delay: 0 ms Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit. ResetTarget() start Could not find valid reset vector. Target halted on flash header read. ResetTarget() end - Took 124ms AfterResetTarget() start AfterResetTarget() end - Took 1.44ms J-Link>h PC = 002114C8, CycleCnt = 00000000 R0 = 00000001, R1 = 402A4210, R2 = 5AF05AF0, R3 = 00000004 R4 = 00000001, R5 = 0021B368, R6 = 00000000, R7 = 401F46E0 R8 = 00000000, R9 = 00000000, R10= 41EDA67B, R11= 400F8000 R12= 00000000 SP(R13)= 20200D10, MSP= 20200D10, PSP= 00000000, R14(LR) = 0020F8FF XPSR = 41000000: APSR = nZcvq, EPSR = 01000000, IPSR = 000 (NoException) CFBP = 00000000, CONTROL = 00, FAULTMASK = 00, BASEPRI = 00, PRIMASK = 00 FPS0 = 00000000, FPS1 = 00000000, FPS2 = 00000000, FPS3 = 00000000 FPS4 = 00000000, FPS5 = 00000000, FPS6 = 00000000, FPS7 = 00000000 FPS8 = 00000000, FPS9 = 00000000, FPS10= 00000000, FPS11= 00000000 FPS12= 00000000, FPS13= 00000000, FPS14= 00000000, FPS15= FFFFFFFF FPS16= 00000000, FPS17= 00000000, FPS18= 00000000, FPS19= 00000000 FPS20= 00000000, FPS21= 00000000, FPS22= 00000000, FPS23= 00000000 FPS24= 00000000, FPS25= 00000000, FPS26= 00000000, FPS27= 00000000 FPS28= 00000000, FPS29= 00000000, FPS30= 00000000, FPS31= FFFFFFFF FPSCR= 00000000 J-Link>loadfile "/home/mn/Documents/MCUXpresso_11.9.1_2170/workspace/eaimxrt1064_hello_world_sdram/Debug/eaimxrt1064_hello_world_sdram.bin" 0x70000000 'loadfile': Performing implicit reset & halt of MCU. ResetTarget() start Could not find valid reset vector. Target halted on flash header read. ResetTarget() end - Took 123ms AfterResetTarget() start AfterResetTarget() end - Took 2.08ms Downloading file [/home/mn/Documents/MCUXpresso_11.9.1_2170/workspace/eaimxrt1064_hello_world_sdram/Debug/eaimxrt1064_hello_world_sdram.bin]... J-Link: Flash download: Bank 0 @ 0x70000000: Skipped. Contents already match O.K. J-Link>qc Script processing completed.

In the tutorial, an s19 file is generated, but I didn't succeed in flashing this file to the flash memory (as it's linked to SDRAM, the JLink tries to flash it to SDRAM, which is not what I want).

After all this, I see that the application doesn't start. Moreover, in the JLink log, you can see "Could not find valid reset vector."

What am I doing wrong?

Thank you,

Michael

回复： Copy from flash to SDRAM and run

Gavin_Jia — Thu, 13 Jun 2024 07:12:42 GMT

Hi @mnagoga ,

Hope you are doing well!

I've helped a customer test a related project before. Please refer to this thread which provides detailed instructions.

https://community.nxp.com/t5/i-MX-Processors/Boot-to-SDRAM-MCU-Boot-utility-How-to-Use-download/td-p/1789125

Best regards,
Gavin

i.MX RT Crossover MCUs中的主题 Copy from flash to SDRAM and run

Copy from flash to SDRAM and run

回复： Copy from flash to SDRAM and run