Hi guys,
I'm writting a simple hello driver from my laptop(ubuntu). I had write a simple
makefile to compile the hello.c and i copy the hello.ko to dm816x-evm
at directory:/home/root/hello.ko.
When i type insmod command.It will
appear this error.Do you all have any idea regards to this error?Do i need to do any kernel compilation/configuration?Do you all have simple tutorial regarding how to write a simple driver and
implement in dm816x-evm.Thank you.
root@dm816x-evm:~# insmod hello.ko
insmod: error inserting 'hello.ko': -1 Invalid module format
This is my makefile script
obj-m += hello.o
all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
This is my hello.c
/*
* hello-3.c - Illustrating the __init, __initdata and __exit macros.
*/
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
#include <linux/init.h> /* Needed for the macros */
static int hello3_data __initdata = 3;
static int __init hello_3_init(void)
{
printk(KERN_INFO "Hello, world %d\n", hello3_data);
return 0;
}
static void __exit hello_3_exit(void)
{
printk(KERN_INFO "Goodbye, world 3\n");
}
module_init(hello_3_init);
module_exit(hello_3_exit);
root@dm816x-evm:~# insmod hello.ko
insmod: error inserting 'hello.ko': -1 Invalid module format
This is my makefile script
obj-m += hello.o
all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
This is my hello.c
/*
* hello-3.c - Illustrating the __init, __initdata and __exit macros.
*/
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
#include <linux/init.h> /* Needed for the macros */
static int hello3_data __initdata = 3;
static int __init hello_3_init(void)
{
printk(KERN_INFO "Hello, world %d\n", hello3_data);
return 0;
}
static void __exit hello_3_exit(void)
{
printk(KERN_INFO "Goodbye, world 3\n");
}
module_init(hello_3_init);
module_exit(hello_3_exit);
