Where can I download the P2020 development environment toolchain version 1.8?
On the following page:
click "Previous Version" link.
After signing into your NXP account, you will be redirect to the Product Information QorIQ Linux SDK.
Click "Previous" tab and click "QorIQ Linux SDK v1.8".
After agreeing to terms you will be able to download "Source File: QorIQ SDK v1.8 SOURCE yocto".