The following table lists the U-Boot file associated with each ConnectCore MP25 variant:

RAM size TF-A file FIP file U-Boot defconfig

1GiB

tf-a-ccmp25-dvk-emmc.stm32

fip-ccmp25-dvk-optee.bin

ccmp25-dvk_defconfig

Check your variant RAM size on the serial console boot log:

NOTICE:  CPU: STM32MP257FAL Rev.?
NOTICE:  Model: Digi International ConnectCore MP25 Development Kit
NOTICE:  Reset reason (0x2035):
NOTICE:  BL2: v2.10-stm32mp2-r1.0(release):dey-5.0-r1.1-v2.10-dirty(87e6c6d0)
NOTICE:  BL2: Built : 20:07:49, Feb 24 2025
NOTICE:  BL2: Booting BL31
NOTICE:  BL31: v2.10-stm32mp2-r1.0(release):dey-5.0-r1.1-v2.10-dirty(87e6c6d0)
NOTICE:  BL31: Built : 20:07:49, Feb 24 2025
[    0.000000] SCP-firmware 2.13.0-intree-optee-os-dey-5.0-r1.1-v4.0
[    0.000000]
[    0.000000] [FWK] Module initialization complete!


U-Boot dub-2023.10-r1.1 (Feb 24 2025 - 20:07:49 +0000)

CPU: STM32MP257FAL Rev.?
DRAM:  1 GiB
optee optee: OP-TEE: revision 4.0 (5c00c71b)
Core:  432 devices, 39 uclasses, devicetree: board
WDT:   Started watchdog with servicing every 1000ms (32s timeout)
MMC:   STM32 SD/MMC: 0, STM32 SD/MMC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Model: Digi International ConnectCore MP25 Development Kit
ConnectCore MP25 SOM variant 0x01: 1 GiB DDR4, Wi-Fi, Bluetooth
  Board version undefined, ID undefined
Boot:  MMC
Net:   eth0: eth1@482c0000, eth1: eth2@482d0000
MMC: no card present
No EFI system partition
No EFI system partition
Failed to persist EFI variables
Normal Boot
Hit any key to stop autoboot:  0
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