1.1. 代码编译

1.1.1. Openwrt编译

作为Kamino18 YODAOS的整体编译环境,使用openwrt可以编译出系统正常运行所需的主要image如下:

镜像名字 镜像运行位置 镜像说明 镜像生成位置
mcu.bin MCU The image which run on MCU $(K18DIR)/openwrt/bin/leo-k18-universal-glibc/mcu.bin
u-boot-spl.bin ARM Secondary program loader, which is charge of DDR initialization and download u-boot.img into DDR to run $(K18DIR)/openwrt/bin/leo-k18-universal-glibc/uboot-leo-k18-universal/openwrt-leo-k18-universal-u-boot-spl.bin
u-boot.img ARM BootLoader download dtb, kernel image and rootfs image into DDR and jump to kernel offset to run $(K18DIR)/openwrt/bin/leo-k18-universal -glibc/uboot-leo-k18-universal /openwrt- leo-k18-universal - u-boot.img
dtb ARM Device tree blob for kernel image $(K18DIR)/openwrt/bin/leo-k18-universal -glibc/openwrt-leo-k18-universal.dtb
zImage ARM Linux kernel image $(K18DIR)/openwrt/bin/leo-k18-universal -glibc/openwrt- leo-k18-universal-zImage
ubi.img ARM Rootfs $(K18DIR)/openwrt/bin/leo-k18-universal -glibc/openwrt-leo-k18-universal-ubi.img

有两种整体编译Kamino18 YODAOS镜像的方法如下:

1. 系统根目录下运行

  • ./build.sh –p leo_k18_universal_node -n openwrt-leo-k18-universal -f leo-k18-universal -j12 -r

2. 为了获取更多的编译信息,可以进入openwrt进行编译,命令如下:

  • cd openwrt
  • cp configs/leo_k18_universal_node_defconfig .config
  • make defconfig
  • make -j1 V=99

编译结果存放在$(K18DIR)/openwrt/bin目录下。

修改openwrt package配置:

  • make menuconfig

修改kernel配置:

  • make kernel_menuconfig

openwrt整个编译后,如需编译单个package用如下命令(详细说明参考$(K18DIR)/openwrt/README.md):

  • make package/some_package/clean
  • make package/some_package/compile V=99

1.1.2. Kernel编译

通过自带工具链,开发者可以独立编译kernel代码,命令如下:

  • cd openwrt
  • make kernel_menuconfig
  • make target/linux/clean
  • make target/linux/compile
  • make target/linux/install

kernel编译生成的dtb和zImage文件在$(K18DIR)/kernel/arch/arm/boot/目录中。

1.1.3. Uboot编译

通过自带工具链,开发者可以独立编译uboot代码,命令如下:

  • cd openwrt
  • make package/uboot-leo/clean
  • make package/uboot-leo/ compile 或 make package/uboot-leo/install

uboot编译生成的u-boot-spl.bin在$(K18DIR)/uboot/spl/目录中, u-boot.img在$(K18DIR)/uboot/目录中。

1.1.4. VSP编译

VSP目录中包含MCU和VSP驱动的源文件(DSP为非开源算法代码,编译方法本文略去),其编译方法如下:

  • cd $(K18DIR)/hardware/nationalchip/gx8010/vsp
  • make k18_universal_defconfig
  • make

编译生成的镜像如下表所示:

镜像名字 镜像说明 镜像生成位置
mcu_nand.bin The mcu image which is flashed into spi nand flash $(K18DIR)/hardware/nationalchip/gx8010/vsp/output/mcu_nand.bin
mcu_nor.bin The mcu image which is flashed into spi nor flash $(K18DIR)/hardware/nationalchip/gx8010/vsp/output/mcu_nor.bin
vsp.ko The vsp driver module which is installed into kernel $(K18DIR)/ hardware/nationalchip/gx8010/vsp/output/vsp.ko

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