AMP SDK Structure

3. AMP SDK structure

The directories directly related to heterogeneous development are shown below:

<SDK>/
├── device/rockchip/       # Unified build scripts, board defconfigs, and FIT ITS files
├── kernel/ or kernel-*    # Linux Kernel, AMP management driver, and RPMsg
├── hal/                   # RK HAL bare-metal library and examples
├── rtos/                  # RT-Thread, board configuration, and RPMsg-Lite
├── u-boot/                # AMP FIT loading and remote-core startup
├── rkbin/                 # BL31, Loader, and special boot configurations
├── prebuilts/             # Cross-compilation toolchains
└── tools/                 # Packaging and firmware tools

Common files and their purposes:

File	Purpose
`device/rockchip/.chip/rockchip_xxx_defconfig`	Selects AMP projects, architecture, ITS, U-Boot configuration, and partition table
`device/rockchip/<soc>/amp_linux.its`	Packaging description for Linux + AP RTOS/bare metal
`device/rockchip/<soc>/amp.its`	Packaging description for RTOS + bare metal
`device/rockchip/<soc>/amp_mcu.its`	Packaging description for Linux + MCU RTOS/bare metal
`kernel/arch/arm64/boot/dts/rockchip/-amp.dts`	Linux-side reserved memory, interrupts, pins, clocks, and peripheral assignment
`kernel/drivers/soc/rockchip/rockchip_amp.c`	AMP resources and remote-core lifecycle management
`rtos/bsp/rockchip/<target>/`	RT-Thread board project
`hal/project/<target>/`	Bare-metal board project

Directory names may differ slightly between SDK releases. Use the following commands to locate the actual files:

find device/rockchip -name 'amp*.its' -o -name '*amp*defconfig'
find kernel* -path '*rockchip*' -name '*amp*.dts*'

3. AMP SDK structure​

3. AMP SDK structure