gustavonihei opened a new pull request, #6603: URL: https://github.com/apache/incubator-nuttx/pull/6603
## Summary This PR intends to add Protected Mode support for **ESP32** by relying on the **PID Controller** peripheral for implementing isolation between Kernel and Userspace. By working together with the MMU and Static MPUs of the ESP32, the PID Controller is able to restrict the application access to peripherals, on-chip memories (Internal ROM and Internal SRAM) and off-chip memories (External Flash and PSRAM). ### Note - The PID Controller driver is in **EXPERIMENTAL** state, so please consider the Protected Mode feature for ESP32 a **Proof-of-Concept**. - The PID Controller **does not** prevent the application from accessing CPU System Registers. ## Impact ESP32 only, but changes should not affect existing targets running under Flat mode. ## Testing `esp32-devkitc:knsh`, successful execution of `ostest` 25 times in a row. ```bash ./tools/configure.sh -E esp32-devkitc:knsh make bootloader make download ESPTOOL_BINDIR=. ESPTOOL_PORT=<PORT> -j 6 ``` ## Note `make bootloader` is **required** for building a patched IDFboot bootloader from source. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
