最近在學驅動模塊，平臺是ARM，因為課上老師講的有點顯淺，所以打算自己再深入研究壹下。
所以在虛擬機裏面裝了ubuntu，打算用來深入學習。
目前的版本是
# uname -a
Linux ubuntu-ldm 4.4.0-28-generic #47-Ubuntu SMP Fri Jun 24 10:09:13 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
我已經安裝了以下的包
# dpkg -l | grep linux
ii console-setup-linux 1.108ubuntu15 all Linux specific part of console-setup
ii libselinux1:amd64 2.4-3build2 amd64 SELinux runtime shared libraries
ii linux-base 4.0ubuntu1 all Linux image base package
ii linux-firmware 1.157.2 all Firmware for Linux kernel drivers
ii linux-generic 4.4.0.28.30 amd64 Complete Generic Linux kernel and headers
ii linux-headers-4.4.0-28 4.4.0-28.47 all Header files related to Linux kernel version 4.4.0
ii linux-headers-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP
ii linux-headers-generic 4.4.0.28.30 amd64 Generic Linux kernel headers
ii linux-image-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-extra-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii linux-image-generic 4.4.0.28.30 amd64 Generic Linux kernel image
ii linux-libc-dev:amd64 4.4.0-28.47 amd64 Linux Kernel Headers for development
ii linux-sound-base 1.0.25+dfsg-0ubuntu5 all base package for ALSA and OSS sound systems
ii linux-source 4.4.0.28.30 all Linux kernel source with Ubuntu patches
ii linux-source-4.4.0 4.4.0-28.47 all Linux kernel source for version 4.4.0 with Ubuntu patches
ii util-linux 2.27.1-6ubuntu3.1 amd64 miscellaneous system utilities
並且將/usr/src/linux-source-4.4.0.tar.bz2解壓到/home/test/WorkSpace/Kernel/linux-source-4.4.0下
然後寫了壹個小小的測試程序
#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init (void) {
printk (KERN_ALERT "Hello, World\n");
return 0;
}
static void hello_exit (void) {
printk (KERN_ALERT "Goodbye, cruel world\n");
}
module_init (hello_init);
module_exit (hello_exit);
Makefile
obj-m += module.o
module-objs := hello.o
all:
make modules M=`pwd` -C /home/test/WorkSpace/Kernel/linux-source-4.4.0
clean:
make modules clean M=`pwd` -C /home/test/WorkSpace/Kernel/linux-source-4.4.0
令我不解的是
# sudo insmod module.ko
insmod: ERROR: could not insert module module.ko: Invalid module format
實在想不通為何沒法裝載這個內核模塊？
是因為我用錯了版本的源碼嘛？
難道是要用自己編譯的uImage來啟動系統才可以嘛？
要如何自己手動編譯替換Ubuntu的內核？