I am trying to compile a new Linux kernel obtained from https://github.com/qoriq-open-source/linux (version 4.9) for T1042D4RDB-64B embedded board using Yocto. It’s currently using 4.1.35-rt41.
I followed these steps:
bitbake virtual/kernel -c cleansstate
bitbake virtual/kernel -c patch
replacing git folder with my new kernels source code (https://github.com/qoriq-open-source/linux)
make ARCH=powerpc menuconfig
bitbake virtual/kernel
Result is
The new kernel has compiled successfully but uImage does not contain the drivers I need. There are only 4 drivers in the new kernel (deploy/images/t1042d4rdb-64b/rootfs.tar.gz) which is “hid”, “input”, “misc” and “staging” like this.
There are lots of driver folders in Linux kernel 4.9 such as gpio,gpu,bluetooth, connector and so on..
Question is
How can I import the drivers I need to new uImage and put them into the board ? Or how can I compile this kernel and select the desired modules/drivers? I want a rich kernel like my Ubuntu kernel.
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Answer
I found the solution by upgrading Yocto version from 2.0 to 2.7. The version I used was newly designed for my board(t1042d4rdb-64b) including linux kernel 4.19.xxx. Installation instructions can be found here https://source.codeaurora.org/external/qoriq/qoriq-components/yocto-sdk/tree/readme?h=yocto_2.7