patacongo commented on a change in pull request #4264: URL: https://github.com/apache/incubator-nuttx/pull/4264#discussion_r680441955
########## File path: boards/mips/pic32mz/chipkit-wifire/README.txt ########## @@ -0,0 +1,60 @@ +README +====== + + chipKIT Wi-FIRE board + (https://chipkit.net/wiki/index.php?title=ChipKIT_Wi-Fire) features + the Microchip PIC32MZ2048EFG100 MCU, Microchip MRF24WG0MA Wi-Fi module, + USB 2.0 Full-Speed / Hi-Speed OTG controller, Micro SD card connector etc. + The PIC32MZ2048EFG100 is a 200 MHz 32-bit MIPS M5150 operation with 2MB Flash + memory and 512KB RAM. + +Contents +======== + + - GCC toolchain installation + - Building NuttX for the chipKIT Wi-FIRE board + - Programming Flash + - Serial console + +GCC toolchain installation +========================== + + $ wget https://sourcery.mentor.com/GNUToolchain/package12725/public/mips-sde-elf/mips-2014.05-24-mips-sde-elf-i686-pc-linux-gnu.tar.bz2 + $ sudo tar xvjf mips-2014.05-24-mips-sde-elf-i686-pc-linux-gnu.tar.bz2 -C /usr/local + +Building NuttX for the chipKIT Wi-FIRE board +============================================ + + $ cd nuttx + $ make apps_distclean + $ make distclean + $ ./tools/configure.sh -l chipkit-wifire:nsh + $ make CROSSDEV=mips-sde-elf- + +Programming Flash +================= + + CAUTION: + + Currently the pre-installed bootloader of the chipKIT Wi-FIRE board + is not supported in this NuttX configuration. Doing the following + steps will erase the factory installed bootloader in the Flash + memory! If you are going to recover the bootloader later on your + chipKIT Wi-FIRE board, the original chipKIT bootloader can be found here: + https://reference.digilentinc.com/_media/chipkit_wifire/chipkit-wifire-v01000303.zip Review comment: I think just reserving a bootloader region in the linker script would be insufficient. You would also need to capture the power on reset exception in the NuttX code. If you can get the reset, then you can set the VBAR to redirect the other exceptions. Ooops... VBAR is ARM. Replace with whatever the equivalent register for the vector base address is. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
