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0bc1830928
NXP's i.MX8QX is an ARMv8 SoC with 4 Cortex-A35 cores and system controller (Cortex-M4) inside, documentation can be found in below link: https://www.nxp.com/products/processors-and-microcontrollers/ applications-processors/i.mx-applications-processors/i.mx-8-processors:IMX8-SERIES This patch adds support for booting up SMP linux kernel (v4.9). Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
54 lines
1.8 KiB
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54 lines
1.8 KiB
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Description
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===========
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The i.MX 8 series of applications processors is a feature- and
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performance-scalable multi-core platform that includes single-,
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dual-, and quad-core families based on the Arm® Cortex®
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architecture—including combined Cortex-A72 + Cortex-A53,
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Cortex-A35, and Cortex-M4 based solutions for advanced graphics,
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imaging, machine vision, audio, voice, video, and safety-critical
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applications.
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The i.MX8QX is with 4 Cortex-A35 ARM core and 1 Cortex-M4 system
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controller.
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The System Controller (SC) represents the evolution of centralized
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control for system-level resources on i.MX8. The heart of the system
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controller is a Cortex-M4 that executes system controller firmware.
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Boot Sequence
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=============
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Bootrom --> BL31 --> BL33(u-boot) --> Linux kernel
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How to build
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============
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Build Procedure
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---------------
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- Prepare AARCH64 toolchain.
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- Build System Controller Firmware and u-boot firstly, and get binary images: scfw_tcm.bin and u-boot.bin
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- Build TF-A
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Build bl31:
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.. code:: shell
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CROSS_COMPILE=aarch64-linux-gnu- make PLAT=<Target_SoC> bl31
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Target_SoC should be "imx8qx" for i.MX8QX SoC.
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Deploy TF-A Images
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-----------------
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TF-A binary(bl31.bin), scfw_tcm.bin and u-boot.bin are combined together
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to generate a binary file called flash.bin, the imx-mkimage tool is used
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to generate flash.bin, and flash.bin needs to be flashed into SD card
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with certain offset for BOOT ROM. The system controller firmware,
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u-boot and imx-mkimage will be upstreamed soon, this doc will be updated
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once they are ready, and the link will be posted.
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.. _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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