[ts-7000] Help On Cross-Compiling a 7250 linux kernel 2.4 module

["marv.schwartz" <>]

I'm trying to build a kernel module to set 4 DIO pins for debounced
leading edge interrupts and just count the interrupts. A user space
program uses the counts. I'm new to building linux kernels and drivers
and am using the Linux Drivers book from O'Reilly.

I've successfully cross-compiled user space programs to access the DIO
pins and the real-time clock and run them on ts-7250.

I've set up Debian in a VM, copied the cross tool chain into
/opt/CrossTools, downloaded and built the TS-linux 2.4 kernel in
~/linux24 except for creating the actual kernel image. But I'm unable
to build the trivial hello kernel module.

I've set the path as follows: export
PATH=$PATH:/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/bin:/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/lib/gcc-lib/arm-linux/3.3.4

The makefile is:
TARGET  := hello-1
WARN    := -W -Wall -Wstrict-prototypes -Wmissing-prototypes
INCLUDE := -isystem ~/linux24/Include
CFLAGS  := -O2 -DMODULE -D__KERNEL__ ${WARN} ${INCLUDE}
CC      := arm-linux-gcc
        
${TARGET}.o: ${TARGET}.c

.PHONY: clean

clean:
        rm -rf {TARGET}.o

hellodriver.c is:
#include <linux/module.h>

int init_module(void) {
    printk("<1>Hello, world\n");
    return 0;
}

void cleanup_module(void) {
    printk("<1>Goodbye world\n");
}

and make hellodriver gets include files from the wrong directory and
results in the following error:

:~$ make hellodriver
arm-linux-gcc -O2 -DMODULE -D__KERNEL__ -W -Wall -Wstrict-prototypes
-Wmissing-prototypes -isystem ~/linux24/Include    hellodriver.c   -o
hellodriver
In file included from
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/asm/irq.h:4,
                 from
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/asm/hardirq.h:7,
                 from
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/asm-generic/local.h:7,
                 from
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/asm/local.h:1,
                 from
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:21,
                 from hellodriver.c:1:
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/asm/arch/irqs.h:11:28:
asm/mach-types.h: No such file or directory
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:
In function `bit_spin_lock':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:406:
warning: unused parameter `bitnum'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:406:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:
In function `bit_spin_trylock':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:427:
warning: unused parameter `bitnum'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:427:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:
In function `bit_spin_unlock':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:446:
warning: unused parameter `bitnum'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:446:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:
In function `bit_spin_is_locked':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:459:
warning: unused parameter `bitnum'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/spinlock.h:459:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/timex.h:
In function `time_interpolator_update':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/timex.h:403:
warning: unused parameter `delta_nsec'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:
In function `prefetch':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:43:
warning: unused parameter `x'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:
In function `prefetchw':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:47:
warning: unused parameter `x'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:
In function `prefetch_range':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:58:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/prefetch.h:58:
warning: unused parameter `len'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/wait.h:
In function `__remove_wait_queue':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/wait.h:101:
warning: unused parameter `head'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/smp.h:
In function `smp_send_reschedule':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/smp.h:104:
warning: unused parameter `cpu'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/gfp.h:
In function `alloc_pages_node':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/gfp.h:79:
warning: unused parameter `nid'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/percpu.h:
In function `__alloc_percpu':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/percpu.h:43:
warning: unused parameter `align'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:
In function `set_cpus_allowed':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:682:
warning: unused parameter `p'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:682:
warning: unused parameter `new_mask'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:
In function `kick_process':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:757:
warning: unused parameter `tsk'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:
In function `task_cpu':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:1083:
warning: unused parameter `p'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:
In function `set_task_cpu':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:1088:
warning: unused parameter `p'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/sched.h:1088:
warning: unused parameter `cpu'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/kmod.h:
In function `request_module':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/kmod.h:33:
warning: unused parameter `name'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `search_module_extables':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:455:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `module_text_address':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:461:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `__module_text_address':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:467:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `__module_get':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:477:
warning: unused parameter `module'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `try_module_get':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:481:
warning: unused parameter `module'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `module_put':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:486:
warning: unused parameter `module'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `module_address_lookup':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:495:
warning: unused parameter `addr'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:496:
warning: unused parameter `symbolsize'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:497:
warning: unused parameter `offset'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:498:
warning: unused parameter `modname'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `module_get_kallsym':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:503:
warning: unused parameter `symnum'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:504:
warning: unused parameter `value'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:505:
warning: unused parameter `type'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:506:
warning: unused parameter `namebuf'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `module_kallsyms_lookup_name':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:511:
warning: unused parameter `name'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `is_exported':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:516:
warning: unused parameter `name'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:516:
warning: unused parameter `mod'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `register_module_notifier':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:521:
warning: unused parameter `nb'
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:
In function `unregister_module_notifier':
/opt/crosstool/arm-linux/gcc-3.3.4-glibc-2.3.2/arm-linux/sys-include/linux/module.h:527:
warning: unused parameter `nb'
make: *** [hellodriver] Error 1

I'd really appreciate knowing what I'm doing wrong.

Thanks.





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