The Simple driver module
Simple
Description:
This stupid module consists of one global driver module
you can specify a default major number here that can be overrided
by loading the driver with
/sbin/insmod Stupid.o Stupid_major=
Driver inodes:
The driver inode in /dev is usually created by
mknod /dev/Simple c major minor
If another major is needed it can be specified by the
Simple_major option to insmod:
insmod Simple.o Simple_major=new_major
Driver inodes:
All driver generated with LDDK have debugging information
compiled into the code that can be configured with the dbgMask
option to insmod. The bits of dbgMask specifies the debugging verbosity:
- Bit-0 Flag for setting all options=on
- Bit-1 function entrys
- Bit-2 function exits
- Bit-3 branches
- Bit-4 data given to functions
- Bit-5 interrupts
- Bit-6 register info
- Bit-7 reserved
For example:
insmod Simple.o dbgMask=0x06
logs all function entrys and exits to the kernel log daemon.
Wed Dec 23 17:40:53 1998