flashing a custom board STM32MP157FAA with EMMC stock at Booting BL32

[kukoldiega]

Hello All,

I have a customSTM32MP157FAA with EMMC and 1GB RAM. I used openstlinux-6.6-yocto-scarthgap-mpu-v25.06.11 for yocto image generation.
when flashing it by DFU this is log I got from serial port. the process stops at SPSR = 0x1d3 and CPU resets and flashing starts over again. I would be grateful if someone could help me to resolve this.

NOTICE: CPU: STM32MP157FAA Rev.Z
NOTICE: Model: STMicroelectronics STM32MP157F-EV1 STM32CubeMX board - openstlinux-6.6-yocto-scarthgap-mpu-v25.06.11
INFO: PMIC version = 0x21
NOTICE: Reset reason (0x15):
INFO: Power-on Reset (rst_por)
INFO: FCONF: Reading TB_FW firmware configuration file from: 0x2ffe2000
INFO: FCONF: Reading firmware configuration information for: stm32mp_fuse
INFO: FCONF: Reading firmware configuration information for: stm32mp_io
INFO: Using USB
INFO: Instance 2
INFO: Boot used partition fsbl1
NOTICE: BL2: v2.10-stm32mp1-r2.0(debug):lts-v2.10.13-dirty(b1f57509)
NOTICE: BL2: Built : 17:10:59, Feb 14 2025
INFO: BL2: Doing platform setup
INFO: RAM: DDR3-DDR3L 16bits 533000kHz
INFO: Memory size = 0x40000000 (1024 MB)
INFO: DFU USB START...
INFO: phase ID :3, Manifestation 3 at c7169856
INFO: Send detach request
INFO: Receive DFU Detach
INFO: DFU USB STOP...
INFO: BL2: Loading image id 1
INFO: Loading image id=1 at address 0x2ffff000
INFO: Image id=1 loaded: 0x2ffff000 - 0x2ffff1ea
INFO: FCONF: Reading FW_CONFIG firmware configuration file from: 0x2ffff000
INFO: FCONF: Reading firmware configuration information for: dyn_cfg
INFO: FCONF: Reading firmware configuration information for: stm32mp1_firewall
INFO: BL2: Loading image id 4
INFO: Loading image id=4 at address 0xfe000000
INFO: Image id=4 loaded: 0xfe000000 - 0xfe00001c
INFO: OPTEE ep=0xfe000000
INFO: OPTEE header info:
INFO: magic=0x4554504f
INFO: version=0x2
INFO: arch=0x0
INFO: flags=0x0
INFO: nb_images=0x1
INFO: BL2: Loading image id 8
INFO: Loading image id=8 at address 0xfe000000
INFO: Image id=8 loaded: 0xfe000000 - 0xfe032b58
INFO: BL2: Skip loading image id 9
INFO: BL2: Loading image id 2
INFO: Loading image id=2 at address 0xc0500000
INFO: Image id=2 loaded: 0xc0500000 - 0xc0518460
INFO: BL2: Skip loading image id 16
INFO: BL2: Loading image id 5
INFO: Loading image id=5 at address 0xc0100000
INFO: Image id=5 loaded: 0xc0100000 - 0xc021e570
NOTICE: BL2: Booting BL32
INFO: Entry point address = 0xfe000000
INFO: SPSR = 0x1d3
NOTICE: CPU: STM32MP157FAA Rev.Z
NOTICE: Model: STMicroelectronics STM32MP157F-EV1 STM32CubeMX board - openstlinux-6.6-yocto-scarthgap-mpu-v25.06.11
INFO: PMIC version = 0x21
NOTICE: Reset reason (0x15):
INFO: Power-on Reset (rst_por)
INFO: FCONF: Reading TB_FW firmware configuration file from: 0x2ffe2000
INFO: FCONF: Reading firmware configuration information for: stm32mp_fuse
INFO: FCONF: Reading firmware configuration information for: stm32mp_io
INFO: Using USB
INFO: Instance 2
INFO: Boot used partition fsbl1
NOTICE: BL2: v2.10-stm32mp1-r2.0(debug):lts-v2.10.13-dirty(b1f57509)
NOTICE: BL2: Built : 17:10:59, Feb 14 2025
INFO: BL2: Doing platform setup
INFO: RAM: DDR3-DDR3L 16bits 533000kHz
INFO: Memory size = 0x40000000 (1024 MB)
INFO: DFU USB START...
INFO: phase ID :3, Manifestation 3 at c7169856
INFO: Send detach request
INFO: Receive DFU Detach
INFO: DFU USB STOP...
INFO: BL2: Loading image id 1
INFO: Loading image id=1 at address 0x2ffff000
INFO: Image id=1 loaded: 0x2ffff000 - 0x2ffff1ea
INFO: FCONF: Reading FW_CONFIG firmware configuration file from: 0x2ffff000
INFO: FCONF: Reading firmware configuration information for: dyn_cfg
INFO: FCONF: Reading firmware configuration information for: stm32mp1_firewall
INFO: BL2: Loading image id 4
INFO: Loading image id=4 at address 0xfe000000
INFO: Image id=4 loaded: 0xfe000000 - 0xfe00001c
INFO: OPTEE ep=0xfe000000
INFO: OPTEE header info:
INFO: magic=0x4554504f
INFO: version=0x2
INFO: arch=0x0
INFO: flags=0x0
INFO: nb_images=0x1
INFO: BL2: Loading image id 8
INFO: Loading image id=8 at address 0xfe000000
INFO: Image id=8 loaded: 0xfe000000 - 0xfe032b58
INFO: BL2: Skip loading image id 9
INFO: BL2: Loading image id 2
INFO: Loading image id=2 at address 0xc0500000
INFO: Image id=2 loaded: 0xc0500000 - 0xc0518460
INFO: BL2: Skip loading image id 16
INFO: BL2: Loading image id 5
INFO: Loading image id=5 at address 0xc0100000
INFO: Image id=5 loaded: 0xc0100000 - 0xc021e570
NOTICE: BL2: Booting BL32
INFO: Entry point address = 0xfe000000
INFO: SPSR = 0x1d3