STM32MP157C U-Boot hangs after board information?

[jhi]

I'm using a custom board (it is not DK1 even tho it says on boot log) with STM32MP157AAC. The boot hangs on u-boot without proper error message. Where should I start to search the failure?

NOTICE:  CPU: STM32MP157AAC Rev.Z
NOTICE:  Model: STMicroelectronics STM32MP157A-DK1 STM32CubeMX board - openstlinux-5.15-yocto-kirkstone-mp1-v22.06.15
WARNING: regulator_get_by_phandle: phandle 9 not found
WARNING: VDD unknown
INFO:    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_io
INFO:    Using SDMMC
INFO:      Instance 1
INFO:    Boot used partition fsbl1
WARNING: regulator_get_by_phandle: phandle 12 not found
NOTICE:  BL2: v2.6-stm32mp1-r1.0(debug):v2.6-dirty
NOTICE:  BL2: Built : 13:14:26, Nov 23 2021
INFO:    BL2: Doing platform setup
INFO:    RAM: DDR3-1066/888 bin G 2x2Gb 533MHz v1.44
INFO:    Memory size = 0x20000000 (512 MB)
INFO:    BL2: Loading image id 31
INFO:    Loading image id=31 at address 0x2ffff000
INFO:    Image id=31 loaded: 0x2ffff000 - 0x2ffff226
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 0x2ffc5000
INFO:    Image id=4 loaded: 0x2ffc5000 - 0x2ffd9820
INFO:    BL2: Skip loading image id 21
INFO:    BL2: Skip loading image id 22
INFO:    BL2: Loading image id 23
INFO:    Loading image id=23 at address 0xc0500000
INFO:    Image id=23 loaded: 0xc0500000 - 0xc0511570
INFO:    BL2: Loading image id 26
INFO:    Loading image id=26 at address 0x2ffc0000
INFO:    Image id=26 loaded: 0x2ffc0000 - 0x2ffc3869
INFO:    BL2: Loading image id 5
INFO:    Loading image id=5 at address 0xc0100000
INFO:    Image id=5 loaded: 0xc0100000 - 0xc01ece98
NOTICE:  BL2: Booting BL32
INFO:    Entry point address = 0x2ffc5000
INFO:    SPSR = 0x1d3
ERROR:   fixedregulator@3 can not set any flag
WARNING: fixed_regulator_register:81 failed to register fixedregulator@3
NOTICE:  SP_MIN: v2.6-stm32mp1-r1.0(debug):v2.6-dirty
NOTICE:  SP_MIN: Built : 13:14:26, Nov 23 2021
INFO:    ARM GICv2 driver initialized
INFO:    Set calibration timer to 60 sec
INFO:    stm32mp1 IWDG1 is secure
INFO:    ETZPC: CRYP1 (9) could be non secure
INFO:    SP_MIN: Initializing runtime services
INFO:    SP_MIN: Preparing exit to normal world
 
 
U-Boot 2021.10-stm32mp-r1 (Oct 04 2021 - 15:09:26 +0000)
 
CPU: STM32MP157AAC Rev.Z
Model: STMicroelectronics STM32MP157A-DK1 STM32CubeMX board - openstlinux-5.15-yocto-kirkstone-mp1-v22.06.15
Board: stm32mp1 in trusted mode (st,stm32mp157a-tc1-is-mx)
DRAM:  INFO:    CPU 0 IT Watchdog 2
INFO:    CPU : 0
INFO:    sp_usr   : 0x0
INFO:    lr_usr   : 0x0
INFO:    spsr_irq : 0x0
INFO:    sp_irq   : 0x0
INFO:    lr_irq   : 0x0
INFO:    spsr_fiq : 0x0
INFO:    sp_fiq   : 0x0
INFO:    lr_fiq   : 0x0
INFO:    spsr_svc : 0x0
INFO:    sp_svc   : 0xc007fe40
INFO:    lr_svc   : 0xc0144fcd
INFO:    spsr_abt : 0x200001d7
INFO:    sp_abt   : 0xbadc0de
INFO:    lr_abt   : 0xc010018c
INFO:    spsr_und : 0x0
INFO:    sp_und   : 0x0
INFO:    lr_und   : 0x0
INFO:    spsr_mon : 0x200001d7
INFO:    sp_mon : 0x2ffd9e40
INFO:    lr_mon : 0xc0100184
INFO:    scr : 0x225
INFO:    pmcr : 0x41072000
 

[jhi]

@Community member​ any ideas why the probe fails?

[PatrickD]

no, my only idea was the security configuration

and it seens OK in you test with "DECPROT_NS_R_S_W"

we are using in the STMicroelectronic boards:

DECPROT(STM32MP1_ETZPC_DDRCTRL_ID, DECPROT_NS_R_S_W, DECPROT_LOCK)

DECPROT(STM32MP1_ETZPC_DDRPHYC_ID, DECPROT_NS_R_S_W, DECPROT_LOCK)

and it is enought...

are you sure that the the modified device tree is used in the BL31 SP-MIN on the board ?

I made several timer this error....

no other ideas.

Patrick

[jhi]

Yes I'm pretty sure, because this was also my original device tree. I did test it also with buildroot and had the same problem.

[UVV]

Wow, I've spent several days debugging it, but this patch has just saved my week!

int dram_init(void)
{
#if 0
...
#else
    gd->ram_size = 0x40000000; /* hardcode your DDR size here */
#endif
 
    return 0;
}

FTR, I'm upgrading my U-Boot-2020.10-stm32mp-r2 (dunfell) to U-Boot 2021.10-stm32mp-r2 (kirkstone). Without it I was getting following error on DRAM init by u-boot:

ERROR:   Illegal access to 0xfdf65fb0:
ERROR:          FAIL_ID = 0x4a0
ERROR:          Non-Secure
ERROR:          Privilege
ERROR:          Read

Even though I've got etzpc configured as follows in my tf-a DTS:

DECPROT(STM32MP1_ETZPC_DDRCTRL_ID, DECPROT_NS_R_S_W, DECPROT_UNLOCK)
DECPROT(STM32MP1_ETZPC_DDRPHYC_ID, DECPROT_NS_R_S_W, DECPROT_UNLOCK)

And memory firewall as default.

@Community member​ if you have any ideas how to fix that properly, that would be great. I could give a test run on my board if you have any suggestions to test.

Thanks,

Vyacheslav