I.MX8M nano dd4 u-boot boot error

[xcx]

Hi all,

    I have a question about "I.MX8M nano u-boot".

    boot failure from SD (imx8mn-ddr4-dev board), error log:

U-Boot SPL 2020.04 (Dec 04 2020 - 00:00:29 -0800)
power_bd71837_init
DDRINFO: start DRAM init
DDRINFO: DRAM rate 2400MTS
DDRINFO:ddrphy calibration done
DDRINFO: ddrmix config done
Normal Boot
Trying to boot from BOOTROM
image offset 0x8000, pagesize 0x200, ivt offset 0x0
Can't support legacy image
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

please analyze it for help.

TKS!

andy Xie

[weidong_sun]

Hi,

You can try the following steps:
1. download I.MX8M NANO demo image
https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...
For example:
L5.4.70_2.3.0_MX8MN
2. decompress it on your windows 10
3. download uuu tool
https://github.com/NXPmicro/mfgtools/releases
here is uuu's usage
https://github.com/NXPmicro/mfgtools
4. copy uuu.exe to demo image directory
5. download images to sd card on board
--setting board usb donwload mode via boot_mode[3:0]
--setting board from SD card via switch on base board(SW1101/SW1102)
--connect usb type-c to pc usb on base board(J301)
--enter windows command line and demo image directory
--These commands can be used:
(1)uuu -b sd imx-boot-imx8mnddr4evk-sd.bin-flash_ddr4_evk
only write flash.bin to sd card
or
(2) uuu uuu.auto-imx8mnddr4evk
write all images to sd card

Try it , please!