SDK概述

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特性

  • 支持Debian 9
  • 支持Linux 4.9 (官方版本)
  • 支持U-Boot 2014.07
  • 支持交叉编译
  • 完整的构建脚本

核心组件

文件系统

SDK默认的根文件系统格式是Ext4。它包含了应用、框架、库和驱动等文件,内核启动后自动挂载。

根文件系统基于Debian基础系统创建,可以通apt-get命令安装所需要的软件。

内核

包含所需的驱动。

工具链

用来为目标机器编译内核,库和应用。

目录结构

├── build                         # Build scripts
├── build.sh                      # Top level build script
├── debian                        # Debian based rootfs build scripts
│   ├── overlay                  # Overlay of system
│   └── stretch-alip.tar.gz      # A Debian basic root file system
├── device                        # Platforms relative files
│   ├── cuckoo
│   ├── eagle                    # Allwinner V5 platform
│   │   ├── boards              # Board's relative files
│   │   │   ├── allwinner-dvb  # Allwinner dvb
│   │   │   └── lindeni-v5     # Lindenis V5 SBC
│   │   │       ├── configs    # Lindenis V5 SBC board configurations, sys_config.fex etc.
│   │   │       └── rootfs     # Lindenis V5 SBC board rootfs overlay
│   │   ├── bootloader          # Allwinner V5 Bootloader relative files
│   │   ├── configs             # Allwinner V5 platform configurations, env.cfg, sys_partition.fex, etc.
│   │   └── rootfs              # Allwinner V5 platform rootfs overlay
│   └── petrel
├── kernel                       # Kernel source code
├── out                          # Building output
├── tools                        # Tools for building and packing
│   ├── build
│   │   └── toolchain           # Cross toolchain
└── u-boot                       # U-Boot source code
  • 根文件系统overlay优先级
构建脚本按以下顺序拷贝overlay:
debian/overlay
device/PLATFORM/rootfs
device/PLATFORM/boards/BOARD/rootfs