Forum Posts
How can I know which key shall I use in pair with DHUK to encrypt my software in flash of STM32U5?
As I understand OTFDEC will be used to on-fly decryption, while execution (am I correct)?After debug is fused (RDP set to level 2) all DHUK keys are individual for each device, while during debug phase all keys are common. How can I make test run of ...
Resolved! How to unlock STM32H5 Flash?
I set my flash OB to iROT-Provisioned (Dont know exactly Product life cycle state, but I can not debug anymore) Based on my understanding, it may be in a CLOSED state. However, I am not sure how to change the state as I want to follow the Debug authe...
Resolved! STM32L552ZE has set boot_ Lock and TZNE, and set RDP LEVEL=1, causing a deadlock. How to unlock
Currently, my program cannot be executed, and it is useless to pull up the boot pin, and STLink cannot be linked. There is a way to reset the chip register boot_lock, TZNE, and RDP? or how to perform full chip erasure?
TF-M and SBSFU Implementation on STM32U5A5
Hi @ChannelWe are using STM32U585 for implementation of TF-M and TF-M SBSFU for our project. now we are planning to change our controller to STM32U5A5 controller. I have couple of doubtsSTM32U585 is PSA Level3 certified while STM32U5A5 is not PSA lev...
SBSFU on NUCLEO L452-RE
Hi,I am trying to implement SBSFU on NUCLEO L452RE board just by copying the project for NUCLEO L432KC (2_images, Y modem protocol) and changing necessary elements (target device, startup_***.s file, UART and led setup). When trying to download UserA...
Resolved! Passwords for RDP1 and RDP2
Hi there. Before attempting any password locking on my STM32575, I read the password lock location and it returned all zeroes like soReading 32-bit memory content Size : 4 Bytes Address: : 0x400220200x40022020 : 00000000After setting the PW, it...
Resolved! SBSFU: Issue with 16-byte alignment in linker script?
I've run into an issue with the section of the UserApp linker script which ensures that the binary size is a multiple of 16 bytes:.align16 : { . = . + 1; /* _edata=. is aligned on 8 bytes so could be aligned on 16 bytes: add 1 byte gap */ ...
Unable to erase STM32H743 device. How to recover the device?
I have flashed the SBSFU application with write protection enabled for flash address 0x08000000. After that, I am unable to erase using jlink commander.exe as well as by IAR->project->Download->erase.STM32H743 has SWD interface and i am using jlink ...
Resolved! How can we achieve a Root of Trust feature for insecure 32-bit ARM microcontrollers?
I'm trying to enable secure boot for general purpose ARM microcontrollers. Based on my research, secure boot starts with a Root of Trust (ROT). Usually this ROT is hardware based, which means that the microcontroller should have a dedicated immutable...