| Anson Huang | 73b1853 | 2018-06-05 16:13:45 +0800 | [diff] [blame^] | 1 | Description |
| 2 | =========== |
| 3 | |
| 4 | The i.MX 8 series of applications processors is a feature- and |
| 5 | performance-scalable multi-core platform that includes single-, |
| 6 | dual-, and quad-core families based on the Arm® Cortex® |
| 7 | architecture—including combined Cortex-A72 + Cortex-A53, |
| 8 | Cortex-A35, and Cortex-M4 based solutions for advanced graphics, |
| 9 | imaging, machine vision, audio, voice, video, and safety-critical |
| 10 | applications. |
| 11 | |
| 12 | The i.MX8QX is with 4 Cortex-A35 ARM core and 1 Cortex-M4 system |
| 13 | controller. |
| 14 | |
| 15 | The System Controller (SC) represents the evolution of centralized |
| 16 | control for system-level resources on i.MX8. The heart of the system |
| 17 | controller is a Cortex-M4 that executes system controller firmware. |
| 18 | |
| 19 | Boot Sequence |
| 20 | ============= |
| 21 | |
| 22 | Bootrom --> BL31 --> BL33(u-boot) --> Linux kernel |
| 23 | |
| 24 | How to build |
| 25 | ============ |
| 26 | |
| 27 | Build Procedure |
| 28 | --------------- |
| 29 | |
| 30 | - Prepare AARCH64 toolchain. |
| 31 | |
| 32 | - Build System Controller Firmware and u-boot firstly, and get binary images: scfw_tcm.bin and u-boot.bin |
| 33 | |
| 34 | - Build TF-A |
| 35 | |
| 36 | Build bl31: |
| 37 | |
| 38 | .. code:: shell |
| 39 | |
| 40 | CROSS_COMPILE=aarch64-linux-gnu- make PLAT=<Target_SoC> bl31 |
| 41 | |
| 42 | Target_SoC should be "imx8qx" for i.MX8QX SoC. |
| 43 | |
| 44 | Deploy TF-A Images |
| 45 | ----------------- |
| 46 | |
| 47 | TF-A binary(bl31.bin), scfw_tcm.bin and u-boot.bin are combined together |
| 48 | to generate a binary file called flash.bin, the imx-mkimage tool is used |
| 49 | to generate flash.bin, and flash.bin needs to be flashed into SD card |
| 50 | with certain offset for BOOT ROM. The system controller firmware, |
| 51 | u-boot and imx-mkimage will be upstreamed soon, this doc will be updated |
| 52 | once they are ready, and the link will be posted. |
| 53 | |
| 54 | .. _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 |