在 Linux 上建立 helloDriver.ko for Android

參考:http://telesky.pixnet.net/blog/post/6969608


1. 先準備 helloDriver.c and Makefile helloDriver.c

#include 
#include 

MODULE_LICENSE("Dual BSD/GPL");

static int hello_init(void)
{
 printk(KERN_INFO "Hello, world\n");
 return 0;
}

static void hello_exit(void)
{
 printk(KERN_INFO "Goodbye, cruel world\n");
}

module_init(hello_init);
module_exit(hello_exit);

Makefile

KERNELDIR := /home/____/_____/982_Android/kernel/
PWD :=$(shell pwd)

ARCH=arm                   
CROSS_COMPILE=/home/____/_____/991_Android/other/vanilla/tools/arm-eabi-4.2.1/bin/arm-eabi-
CC=$(CROSS_COMPILE)gcc
LD=$(CROSS_COMPILE)ld

obj-m := hello.o

modules:
 $(MAKE) -C $(KERNELDIR) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) M=$(PWD) modules  

clean:
 rm *.o *.ko *.mod.c *.markers *.order *.symvers


 

2. 在 /home/____/_____/982_Android/kernel/ 裡修改 Makefile

ARCH           := arm
CROSS_COMPILE  := /home/____/_____/991_Android/other/vanilla/tools/arm-eabi-4.2.1/bin/arm-eabi-

$ make mrproper
$ make oldconfig

全部enter

$ make modules_prepare

3. 回到 helloDriver.c 所在的目錄 $ make 這樣就會得到 helloDriver.ko $ file helloDriver.ko