Hi grp,
I am trying out the cross-compliation of the scull module from LDD2 for arm. I had 2 issues here:
1) I set the kernel sources correctly in the Rules.make (given in the source code from the book). For the arch. specific makefile, I set the
ARCHMAKEFILE variable in the Rules.make as:
(ps: I am not using the Makefile.arm given along with the source code of the book).
$ARCHMAKEFILE=/usr/src/linux/arch/arm/Makefile
The module dosent get compiled in the above case. It seems to stop somewhere between the arch/arm/Makefile.The error I get is :
[root@consult02 scull]# make
Makefile:35: warning: overriding commands for target `install'
/home/asrinivasan/k002/linux-xscale-le/arch/arm/Makefile:321: warning: ignoring old commands for target `install'
Making asm-arm/arch -> asm-arm/arch-pxa symlink
ln: creating symbolic link `include/asm-arm/arch' to `arch-pxa': No such file or directory
make: *** [include/asm-arm/.arch] Error 1
2) Now, If I make a copy of the "/usr/src/linux/arch/arm/Makefile" as "
Makefile.arm" in the local dir. where I am cross-compiling the scull modules and the module gets complied successfully. Now, when I do 'insmod scull.o' in an arm-proc. machine, the module gets loaded. I can see tht using 'lsmod'. But I dont see it in /proc/devices? But neither does the
result = register_chrdev(scull_major, "scull", &scull_fops);
if (result < 0) {
printk(KERN_WARNING "scull: can't get major %d\n",scull_major);
return result;
}
piece of code , report failure in case of no major number assigned. Can someone give pointers, regarding what might be the problem ?
rgds
Arun
--
"There are 10 people in the world - those who understand binary and those who dont !"
