Build own driver alone

Topics in this section,

• Learnings in this section

• Version Info

• Steps to build own driver alone

  • STEP 1: Follow below link till step 7

  • STEP 2: Compile kernel

  • STEP 3: Check the generated module

  • STEP 4: Load the module

  • STEP 5: Unload the module

Clean kernel compilation

• In this section, you are going to learn

• How to build own driver alone

Version Info

#	Version
Freebsd	14.1.0

Steps to build own driver with kernel compilation

STEP 1: Follow below link till step 7

Build own driver with kernel compilation

STEP 2: Compile kernel

• Execute the below command to build the kernel compilation

test:~$ cd /usr/src/sys/module/mychar/

test:~$ make

STEP 3: Check the generated module

• Check for the module generated in below path

test:~$ ls /usr/obj/usr/src/amd64.amd64/sys/modules/mychar/
mychar.ko

STEP 4: Load the module

• Move to the directory and load the module by running below command

test:~$ cd /usr/obj/usr/src/amd64.amd64/sys/modules/mychar/

test:~$ kldload mychar.ko

STEP 5: Unload the module

• Unload the module from the system by running below command

test:~$ cd /usr/obj/usr/src/amd64.amd64/sys/modules/mychar/

test:~$ kldunload mychar.ko