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- NXP i.MX 8 Series
- =================
- The i.MX 8 series of applications processors is a feature- and
- performance-scalable multi-core platform that includes single-,
- dual-, and quad-core families based on the Arm® Cortex®
- architecture—including combined Cortex-A72 + Cortex-A53,
- Cortex-A35, and Cortex-M4 based solutions for advanced graphics,
- imaging, machine vision, audio, voice, video, and safety-critical
- applications.
- The i.MX8QM is with 2 Cortex-A72 ARM core, 4 Cortex-A53 ARM core
- and 1 Cortex-M4 system controller.
- The i.MX8QX is with 4 Cortex-A35 ARM core and 1 Cortex-M4 system
- controller.
- The System Controller (SC) represents the evolution of centralized
- control for system-level resources on i.MX8. The heart of the system
- controller is a Cortex-M4 that executes system controller firmware.
- Boot Sequence
- -------------
- Bootrom --> BL31 --> BL33(u-boot) --> Linux kernel
- How to build
- ------------
- Build Procedure
- ~~~~~~~~~~~~~~~
- - Prepare AARCH64 toolchain.
- - Build System Controller Firmware and u-boot firstly, and get binary images: scfw_tcm.bin and u-boot.bin
- - Build TF-A
- Build bl31:
- .. code:: shell
- CROSS_COMPILE=aarch64-linux-gnu- make PLAT=<Target_SoC> bl31
- Target_SoC should be "imx8qm" for i.MX8QM SoC.
- Target_SoC should be "imx8qx" for i.MX8QX SoC.
- Deploy TF-A Images
- ~~~~~~~~~~~~~~~~~~
- TF-A binary(bl31.bin), scfw_tcm.bin and u-boot.bin are combined together
- to generate a binary file called flash.bin, the imx-mkimage tool is used
- to generate flash.bin, and flash.bin needs to be flashed into SD card
- with certain offset for BOOT ROM. The system controller firmware,
- u-boot and imx-mkimage will be upstreamed soon, this doc will be updated
- once they are ready, and the link will be posted.
- .. _i.MX8: https://www.nxp.com/products/processors-and-microcontrollers/applications-processors/i.mx-applications-processors/i.mx-8-processors/i.mx-8-family-arm-cortex-a53-cortex-a72-virtualization-vision-3d-graphics-4k-video:i.MX8
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