[microblaze-uclinux] Block device driver

["Pavel Ivanchenko" <pi-home@xxxxxxx>]

Hello.

I'm trying write driver to MMC card.

Begin with examples from "Linux Device Drivers" book.

It have block driver example "sbull - Simple Block Utility for Loading Localities" (attach to mail).

I creat next Make file to compile object file:

ROOTDIR=/usr/src/uClinux-dist
UCLINUX_BUILD_USER=1
include $(ROOTDIR)/.config
LIBCDIR = $(CONFIG_LIBCDIR)
include $(ROOTDIR)/config.arch

CFLAGS += -D__KERNEL__ -DMODULE -DLINUX 

sbull.o: sbull.c 
 $(CC) $(CFLAGS) -c sbull.c

clean:
 rm -f *.o core

 

Some warning printing after compile, but object file create.

I'm dowmload it to /var and try "insmod ./sbull.o"

But return:

Using ./sbull.o
insmod: unresolved symbol divsi3_proc
insmod: unresolved symbol mulsi3_proc
                          

 

Please prompt direction to resolve this.

I think, I do not turn on some elements of kernel.

 

Thank, Pavel.

Attachment: sbull.zip
Description: Binary data