kl27z_hic: Update GCC flash & ROM bootloader config and tweak non-microbit value #959
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This porst into th GCC asm file the flash config data from the armcc file for the micro:bit board. The default kl27z configuration (non-micro:bit) has been updated in both GCC and armcc to have the FOPT config disable NMI interrupts and ensure the BOOTCFG0 pin doesn't force the ROM bootloader to run on startup.
This config data goes to addres 0x400 in flash, which corresponds to the bootloader area. Currently the Interface builds included the same data at address 0x8400, which is unneccesary.
As done with the armcc builds, this only enables USB in the ROM bootloader, so that any random traffic in the I2C/SPI/UART pins doesn't accidentally trigger the bootloader.
mathias-arm
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May 16, 2022
mbrossard
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Mar 27, 2023
Changes in ARMmbed#959 created an issue for GCC builds of k26f_bl, kl26z_bl, and k20dx_bl in the generation of .bin file: ``` ../../../tools/post_build_script_gcc.py build/k26f_bl_crc Error - only 1 region allowed in hex file 2 found. Regions: 0: 0x00000000 - 0x000003bf 1: 0x00000400 - 0x0000ffff ```
mathias-arm
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Apr 18, 2023
Changes in #959 created an issue for GCC builds of k26f_bl, kl26z_bl, and k20dx_bl in the generation of .bin file: ``` ../../../tools/post_build_script_gcc.py build/k26f_bl_crc Error - only 1 region allowed in hex file 2 found. Regions: 0: 0x00000000 - 0x000003bf 1: 0x00000400 - 0x0000ffff ```
mathias-arm
pushed a commit
that referenced
this pull request
May 10, 2023
Changes in #959 created an issue for GCC builds of k26f_bl, kl26z_bl, and k20dx_bl in the generation of .bin file: ``` ../../../tools/post_build_script_gcc.py build/k26f_bl_crc Error - only 1 region allowed in hex file 2 found. Regions: 0: 0x00000000 - 0x000003bf 1: 0x00000400 - 0x0000ffff ```
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FOPTfrom0x39to0x3BBOOTPIN_OPTis set to1, so it doesn't trigger the ROM bootloader if theBOOTCFG0pin is grounded (which in micro:bit is connected to TP1, to trigger the ROM bootloader)0x3Fwhich wasn't quite right either