phyCORE i.MX8M Plus 新增自定义Module

phytec@ubuntu:~$ cd BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/
phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0$ source sources/poky/oe-init-build-env      
phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/build$ bitbake-layers create-layer ~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/meta-hello

.
├── conf
│   └── layer.conf
├── COPYING.MIT
├── README
└── recipes-example
    └── example
        └── example_0.1.bb
3 directories, 4 files

phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/meta-hello$ rm -rf recipes-example/
phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/meta-hello$ mkdir recipes-hello
phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/meta-hello$ cd recipes-hello
phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/meta-hello/recipes-hello$ cp -fvR ~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/sources/poky/meta-skeleton/recipes-kernel/hello-mod .

.
└── hello-mod
    ├── files
    │   ├── COPYING
    │   ├── hello.c
    │   └── Makefile
    └── hello-mod_0.1.bb
2 directories, 4 files

SUMMARY = "Example of how to build an external Linux kernel module"
DESCRIPTION = "${SUMMARY}"
LICENSE = "GPL-2.0-only"
LIC_FILES_CHKSUM = "file://COPYING;md5=3c9619114e53c55367ac534556c93943"

inherit module

SRC_URI = "file://Makefile \
          file://hello.c \
          file://COPYING \
          "

S = "${WORKDIR}"

# The inherit of module.bbclass will automatically name module packages with
# "kernel-module-" prefix as required by the oe-core build environment.

RPROVIDES_${PN} += "kernel-module-hello"

phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/build$ vim conf/bblayers.conf

# POKY_BBLAYERS_CONF_VERSION is increased each time build/conf/bblayers.conf
# changes incompatibly
POKY_BBLAYERS_CONF_VERSION = "2"

BBPATH = "${TOPDIR}"
BBFILES ?= ""

OEROOT := "${@os.path.abspath(os.path.dirname(d.getVar('FILE', True)) + '/../../sources/poky')}"
# add BSPDIR variable, as it is needed by recipes of NXP
BSPDIR := "${OEROOT}/../.."

# In our BSPs active layers are defined by the manifest.xml for all BSPs. The
# bblayers.conf gets created by the init_bblayers.py script.
BBLAYERS ?= ""
BBLAYERS += "\
  ${OEROOT}/../poky/meta \
  ${OEROOT}/../poky/meta-poky \
  ${OEROOT}/../meta-openembedded/meta-oe \
  ${OEROOT}/../meta-openembedded/meta-networking \
  ${OEROOT}/../meta-openembedded/meta-python \
  ${OEROOT}/../meta-openembedded/meta-multimedia \
  ${OEROOT}/../meta-openembedded/meta-filesystems \
  ${OEROOT}/../meta-openembedded/meta-perl \
  ${OEROOT}/../meta-openembedded/meta-gnome \
  ${OEROOT}/../meta-imx/meta-bsp \
  ${OEROOT}/../meta-imx/meta-sdk \
  ${OEROOT}/../meta-imx/meta-ml \
  ${OEROOT}/../meta-browser/meta-chromium \
  ${OEROOT}/../meta-clang \
  ${OEROOT}/../meta-freescale \
  ${OEROOT}/../meta-freescale-3rdparty \
  ${OEROOT}/../meta-freescale-distro \
  ${OEROOT}/../meta-nxp-demo-experience \
  ${OEROOT}/../meta-python2 \
  ${OEROOT}/../meta-qt5 \
  ${OEROOT}/../meta-virtualization \
  ${OEROOT}/../meta-rauc \
  ${OEROOT}/../meta-phytec \
  ${OEROOT}/../meta-ampliphy \
  ${OEROOT}/../meta-security \
  ${OEROOT}/../meta-security/meta-tpm \
  ${OEROOT}/../meta-hello \

phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/build$ vim conf/local.conf

#把这一行加在文件末尾
IMAGE_INSTALL_append = " hello-mod"

phytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/build$ bitbake phytec-qt5demo-image

pphytec@ubuntu:~/BSP/BSP-Yocto-NXP-i.MX8MP-PD22.1.0/build/deploy/images/phyboard-pollux-imx8mp-2$ ls | grep sdcard
phytec-qt5demo-image-phyboard-pollux-imx8mp-2-20230314035419.rootfs.sdcard
phytec-qt5demo-image-phyboard-pollux-imx8mp-2.sdcard

root@phyboard-pollux-imx8mp-2:~# modprobe hello                                 
[  82.822420] hello: loading out-of-tree module taints kernel.                 
[  82.829151] Hello World!                                                     
root@phyboard-pollux-imx8mp-2:~# lsmod                                          
Module                  Size  Used by                                           
hello                  16384  0                                                 
crct10dif_ce           20480  1                                                 
flexcan                32768  0                                                 
fuse                  131072  1                                                 

root@phyboard-pollux-imx8mp-2:extra# pwd                                        
/lib/modules/5.10.72-bsp-yocto-nxp-i.mx8mp-pd22.1.0/extra                       
root@phyboard-pollux-imx8mp-2:extra# ls                                         
cryptodev.ko  hello.ko