Yocto Bitbake compiling u-boot kernel

1,u-boot

< enter ...-yocto>

Bitbake-c cleansstate u-boot (two s)

Bitbake-c Patch U-boot ( so that it can be compiled locally, not from the online fetch code )

< enter ...-release>

Bitbake-e u-boot |grep ^s= ( get u-boot code path, can be modified after entry )

< modification completed, enter release>

SOURCE Source_this

Bitbake-c compile-f u-boot >> log.txt ( show output in log.txt )

Bitbake U-boot

2,kernel

< enter ...-yocto>

Bitbake-c cleansstate Virtual/kernel

Bitbake-c Patch Virtual/kernel

Bitbake-e Virtual/kernel |grep ^s=

update kernel_defconfig variable in meta-fsl-ppc/conf/machine/<machine>.conf ( modify KERNEL Defconfig )

update kernel_devicetree variable in meta-fsl-ppc/conf/machine/<machine>.conf ( modify DTS)

Bitbake-c menuconfig virtual/kernel (Enter the Kernel configuration menu menu configuration)

Screen-r Devshell

< enter ...-release>

Bitbake-c compile-f Virtual/kernel

bitbake Virtual/kernel ( compiled kernel file, will be in Build_<machine>_release/tmp/deploy/imag es/)

Yocto Bitbake compiling u-boot kernel