hal/stm32n6: initialize dtcm#427
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Code Review
This pull request introduces DTCM initialization for the STM32N6 platform by adding a memory zeroing loop. The reviewer suggests replacing hardcoded magic numbers for the DTCM base address and bank size with configurable macros to improve maintainability. Additionally, it is recommended to use the volatile qualifier in the initialization loop to prevent compiler optimizations that could interfere with correct ECC initialization.
jmaksymowicz
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TASK: PP-473
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agkaminski
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jmaksymowicz
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TASK: PP-473
Description
This change initializes DTCM memory during startup of armv8m55-stm32n6
Motivation and Context
This change is required to allow moving kernel data to DTCM, which has great performance benefits. The DTCM memory needs to be fully cleared before it can be used because otherwise access causes bus faults due to ECC errors.
Types of changes
How Has This Been Tested?
Checklist:
Special treatment