arch/arm/src/stm32h7: Extend crypto interface to support HW CRC32

[pbarada]

Add stm32h7 support for CRC32 HW accelerator.

Summary

Extend stm32_crypto.c to add CRYPTO_CRC32 HW acceleration.
Update nucleo-h753zi:crypto defconfig to enable HW CRC and enable crc32 testing utility.

Impact

• User experience: No adaptation required. This fix extends existing behavior.
• Build: No impact.
• Hardware: Affects nucleo-h753zi board (and other stm32h7 based boards)
• Documentation: No impact.
• Security: No impact.
• Compatibility: Backward compatible - adds functionality.

Testing

Build Host:

• OS: Ubuntu 24.04.4 LTS
• Compiler: arm-none-eabi-gcc 13.2.1

Target:

• Architecture: ARM (STM32H753ZI)
• Board: Nucleo-h753zi
• Configuration: nucleo-h753zi:crypto

Testing performed:

• Booted board and ran crc32 test utility; verify test used HW acceleration

Runtime testing:

From target console:

NuttShell (NSH) NuttX-13.0.0
nsh> uname -a
NuttX 13.0.0 bed32ec994 Jul 16 2026 11:06:39 arm nucleo-h753zi
nsh> crc32
crc32 test case 1 success
crc32 test case 2 success
crc32 test case 3 success
crc32 test case 4 success
crc32 test case 5 success
crc32 test case 6 success
crc32 test case 7 success
crc32 test case 8 success
nsh>

[github-actions]

MemBrowse Memory Report

No memory changes detected for:

• arduino-mega2560
• esp32-devkitc
• hifive1-revb
• mirtoo
• qemu-armv8a
• qemu-intel64
• rx65n-rsk2mb
• s698pm-dkit
• stm32-nucleo-f103rb