STM32N6xx: add support for running from external flash #9
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Igor-Misic
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Pull Request Overview
This PR adds support for running firmware from external flash on the STM32N6xx microcontroller in memory-mapped mode. It includes two new build targets and corresponding linker scripts to support both standard external flash execution and a variant with firmware signature support.
Key changes:
- Added two new build targets:
nucleo_n657x0_q_extandnucleo_n657x0_q_ram - Created two new linker scripts for external flash configurations
- Disabled XSPI2/XSPIM peripheral reset during system initialization to preserve external flash configuration
Reviewed Changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.
| File | Description |
|---|---|
| Makefile | Added new build targets and rules for STM32N6xx external flash configuration |
| Linker/STM32N6xx_EXT_FLASH_SIGNATURE.ld | New linker script for external flash with firmware signature section |
| Linker/STM32N6xx_EXT_FLASH.ld | New linker script for external flash without signature section |
| LedBlink/STM32/Src/system_stm32n6xx.c | Commented out XSPI2/XSPIM reset to preserve external flash initialization |
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This is an example of IMLedBlink running from external flash in memory-mapped mode.