flash.bin FRDM IMX93

[anpa711]

Hi all,

I am using FRDM iMX93. As unpacked I tried to follow https://www.nxp.com/document/guide/getting-started-with-frdm-imx93:GS-FRDM-IMX93?section=build-and-r... and all works perfect.

Now I want my custom u-boot, ATF, OPTEE. I used same hash as the yocto and builds perfectly. I use mkimage to create the flash.bin and all fine untill this point.

But ... when I try to flash this flash.bin (using Balena) nothing happens in console.

I tried to use from the working yocto the flash,bin but the same, no boot.
How can I created a bootable image using only flash.bin?

When I see u-boot boots will add the kernel rootfs later.

Regards,

anpa

[anpa711]

So for me this was the solution:
dd if=iMX93/flash.bin of=bootable.img bs=1K seek=32 conv=fsync

than with Balena bootable.img is booting. Ineed to figure out why I have some error but at least I see the console output:

U-Boot SPL 2024.04-00003-g7e135e087e8 (Jul 19 2025 - 19:10:15 +0000)
SOC: 0xa1009300
LC: 0x40010
PMIC: PCA9451A
PMIC: Over Drive Voltage Mode
Error: ele_volt_change_start_req: ret -5, response 0xf429
Error: ele_volt_change_finish_req: ret -5, response 0xf429
DDR: 3733MTS
DDR: 3733MTS
found DRAM 2GB DRAM matched
M33 prepare ok
Normal Boot
Trying to boot from BOOTROM
Boot Stage: Primary boot
image offset 0x8000, pagesize 0x200, ivt offset 0x0
Load image from 0x40400 by ROM_API
"Synchronous Abort" handler, esr 0x02000000
elr: 00000000204e0000 lr : 000000002049dafc
x 0: 00000000204e0000 x 1: 0000000020501ba0
x 2: 0000000000000fc0 x 3: 0000000083200040
x 4: 00000000204b6958 x 5: 0000000083200450
x 6: 0000000000000001 x 7: 0000000083200450
x 8: 00000000000000f0 x 9: 00000000796d7959
x10: 00000000796d7959 x11: 0000000000000001
x12: 0000000000000001 x13: 0000000000000012
x14: 0000000000000001 x15: 0000000000000003
x16: 00000000204a5ef4 x17: 0000000000000000
x18: 0000000020501c10 x19: 00000000204b9af8
x20: 00000000204b9ae0 x21: 0000000020501bb0
x22: 00000000deadbeef x23: 00000000204b9ae0
x24: 000000000000000f x25: 0000000000000000
x26: 00000000204ad81c x27: 00000000204ad000
x28: 00000000204ad804 x29: 0000000020501b30

Code: 00000000 00000000 00000000 00000000 (00000004)
Resetting CPU ...

resetting ...

[JorgeCas]

Hello,

I suggest you use UUU instead Balena.

Please try the next command:

uuu -b <storage unit> flash.bin

Best regards.

[anpa711]

Thx for reply I will try this out. If this works than it means uuu tool inserts some header which is recognized by the ROM boot? Is there any detailed documentation about the boot sequence?