19 lines
794 B
Markdown
19 lines
794 B
Markdown
# Building MCUBoot with nRF52840 CC310 enabled
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## Pre-prerequisites
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Clone [nrfxlib](https://github.com/NordicPlayground/nrfxlib) next to the mcuboot root folder. So that it's located `../nrfxlib` from mcuboots root folder.
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## Building
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make sure `root-ec-p256.pem` is set as the certificate and that `CONFIG_BOOT_SIGNATURE_TYPE_ECDSA_P256` is selected not `CONFIG_BOOT_SIGNATURE_TYPE_RSA` in `prj.conf` of `boot/zephyr`.
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Since it defaults to tinycrypt you'll have to go into `menuconfig` and change the implementation selection to `cc310` or also set this in `prj.conf`.
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```
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mkdir build && cd build
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cmake -GNinja -DBOARD=nrf52840dk_nrf52840
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ninja flash
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```
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Build a hello world example in zephyr and sign it with imgtool.py with the `root-ec-p256.pem` and flash it at `FLASH_AREA_IMAGE_0`.
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