topic Re: Re:Adding new module to the ltib in Other NXP Products

LTIB for mpc8349itx

fjpse — Wed, 18 Apr 2007 18:05:44 GMT

I want to make a hello driver for this platform using LTIB.

First, I execute this commands to get the kernel source and to compile the kernel

./ltib -p kernel -m prep
./ltib -p kernel -m scbuild

Now I get the kernel source in rpm/BUILD/linux

I create a subdir rpm/BUILD/test with two files: test.c (my hello driver) and Makefile (attached with extension .txt)

To compile the driver, I use LTIB in shell mode:

./ltib -m shell
LTIB>cd rpm/BUILD/test
LTIB>make

But the compiler fail because it can't found <platforms/83xx/mpc8349_itx.h> (this file exist) in the linux kernel source (attached the file result.txt with the output of the make command).

What is the problem? How to build a driver using the LTIB?
Thanks.

result.txt
Makefile.txt
test.c

Message Edited by t.dowe on 2009-09-04 12:43 PM

Re: LTIB for mpc8349itx

aurelihein — Wed, 18 Apr 2007 19:00:38 GMT

I already had your problem in doing driver with ltib, I'm gonna try to explain you how i did.
First of all you have to add your module in the kernel subdirectory, for example if you want to add test, you can put it under drivers :
linux-XXXX/drivers/test/
there you can copy your test.c file and add a Makefile with written in it :
Code:

obj-m += test.o

you have to add your path at the end of the Makefile under the directory drivers :
Code:

obj-m += test/

just recompile with ltib : ./ltib
load the rootfs.ext2.gz
and if you want to load your module go into /lib/modules/.../test and do insmod test.ko
enjoy
let me know if you have troubles
I would appreciate to know more what you implemented on your mpc8349 platform, because I am trying unsuccessfully to change the value of registers but I can't . . .

Message Edited by aurelihein on 2007-04-1801:01 PM

Re: LTIB for mpc8349itx

mii — Wed, 18 Apr 2007 22:03:31 GMT

Hi,

I have the same problem.

Can you send your Makefile, please ?

Thanks

Re: LTIB for mpc8349itx

mii — Thu, 19 Apr 2007 15:07:50 GMT

please, help me.

I have problem to create a module with ltib.

How to compile ?

Thanks

Re: LTIB for mpc8349itx

fjpse — Thu, 19 Apr 2007 16:30:37 GMT

mii,

the makefile that I use is attached to the first message I sent (but renamed to Makefile.txt because it's not possible to attach a file without extension).

Well, I have been doing some probes.

If I execute "make V=1" (see Makefile in linux source directory) instead of "make" (inside LTIB), I can see the commands that will be executed. I get the next output:

gcc -m32 -Wp,-MD,/home/javier/ltib/rpm/BUILD/test/.test.o.d -nostdinc -isystem /opt/mtwk/usr/local/powerpc-linux/gcc-3.4.3-glibc-2.3.3/lib/gcc/powerpc-linux/3.4.3/include -D__KERNEL__ -Iinclude -Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -ffreestanding -O2 -fomit-frame-pointer -pipe -msoft-float -fno-unit-at-a-time -Iinclude/asm-i386/mach-default -Wdeclaration-after-statement -DMODULE -DKBUILD_BASENAME=test -DKBUILD_MODNAME=test -c -o /home/javier/ltib/rpm/BUILD/test/.tmp_test.o /home/javier/ltib/rpm/BUILD/test/test.c

One strange thing is the flag -Iinclude/asm-i386/mach-default.

My host is a i386, but my target is a POWERPC.
Well, then I try this "make V=1 ARCH=ppc" and.....voilà!

IT'S COMPILE OK!!!!

The command is gcc instead of powerpc-linux-gcc or some similar, strange, but I can load and unload the driver in the mpc8349itx platform (and the messages are output). I suppose that inside LTIB, gcc is really the powerpc compiler.

Now, I want to make a driver that manipulates a hardware timer and its interrupt.

Re: LTIB for mpc8349itx

mii — Thu, 19 Apr 2007 17:29:08 GMT

Thanks a lot, the compile is OK.

Now, I have the module nammed test.ko (under rpm/BUILD/test/).

But after the commands : ./ltib -p kernel -m scbuild and ./ltib -p -m scdeploy

this module test.ko is not present in the files : rootfs.ext2.gz.uboot or uImage.

I load this files by tftp to boot (I supposed that you use NFS to boot).

Do you know how to include the module test.ko (under rootfs/lib/module I supposed) ?

Thanks

Mii

Re: LTIB for mpc8349itx

fjpse — Thu, 19 Apr 2007 18:29:19 GMT

aurelihein posted a message indicating how to make it (the second message of this thread), but i don't probe that. (sorry)

At the moment, I`m working with the small-ramfs (saved into flash memory), because I have to do some tests over the platform before beginning the deployment of the system.

Re: LTIB for mpc8349itx

mii — Thu, 19 Apr 2007 18:48:56 GMT

I have seen the aurelihein message, but not understand.

My directory /rootfs/lib/modules/2.6.13.4/sources is a link

to /rpm/BUILD/linux-2.6.13.

To use small-ramfs, you must create rootfs.ext2.gz.uboot, I suppose ?

Do you have modified .lkc file to include test.ko in your small-ramfs ?

Thanks for your time.

Re: LTIB for mpc8349itx

aurelihein — Thu, 19 Apr 2007 21:13:20 GMT

sorry fjpse, I figured out that i didn't answer your question actually ! But what you did will help me !
To add your module in the final rootfs.ext2.gz that you will download into your board you have to add your directory "test" into the kernel drivers's folder
I will try to explain the whole method :
when you are in your ltib folder do
./ltib -m prep -p kernel
now your kernel is decompressed into the rpm/BUILD directory(things that you already did)
cd rpm/BUILD/linux-2.6.13/drivers/
mkdir test
cd test
copy into this director your test.c and the Makefile i gave you before
cd ..
now your are in the drivers' directory, change the makefile to add the line i gave :
obj-m += test/
return into your ltib directory and do
./ltib
when it will be finished you should find your module into the /lib/modules.../test/test.ko

let me know if you have trouble, I was kinda busy sorry if i didn't help you earlier

Re: LTIB for mpc8349itx

aurelihein — Thu, 19 Apr 2007 21:39:13 GMT

i tried what you did, let me show you what i got :
abouin@FW04:~/ltib/rpm/BUILD/test$ make V=1 ARCH=ppc
make -C ../linux M=/home/abouin/ltib/rpm/BUILD/test
make[1]: entrant dans le répertoire « /home/abouin/ltib/rpm/BUILD/linux-2.6.13 »
mkdir -p /home/abouin/ltib/rpm/BUILD/test/.tmp_versions
make -f scripts/Makefile.build obj=/home/abouin/ltib/rpm/BUILD/test
gcc -m32 -Wp,-MD,/home/abouin/ltib/rpm/BUILD/test/.test.o.d -nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include -D__KERNEL__ -Iinclude -Iarch/ppc -Wall -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -ffreestanding -O2 -fomit-frame-pointer -Iarch/ppc -msoft-float -pipe -ffixed-r2 -mmultiple -mstring -Wa,-maltivec -DMODULE -DKBUILD_BASENAME=test -DKBUILD_MODNAME=test -c -o /home/abouin/ltib/rpm/BUILD/test/.tmp_test.o /home/abouin/ltib/rpm/BUILD/test/test.c
cc1: error: unrecognized command line option "-mmultiple"
cc1: error: unrecognized command line option "-mstring"
cc1: warning: unknown register name: r2
as: option non reconnue « -maltivec »
make[2]: *** [/home/abouin/ltib/rpm/BUILD/test/test.o] Erreur 1
make[1]: *** [_module_/home/abouin/ltib/rpm/BUILD/test] Erreur 2
make[1]: quittant le répertoire « /home/abouin/ltib/rpm/BUILD/linux-2.6.13 »
make: *** [default] Erreur 2

if you see what goes wrong . . .
thank you

Re: LTIB for mpc8349itx

mii — Thu, 19 Apr 2007 21:57:45 GMT

aurelihein, try the command 'make V=1 ARCH=ppc' in a shell ltib (enter by command './ltib -m shell').

Re: LTIB for mpc8349itx

fjpse — Fri, 20 Apr 2007 05:40:15 GMT

aurelihein, I haven't any problem adding the module to the root filesystem. Thanks for your explains.

Now, I'm trying to access to the IMMR. The register IMMRBAR (offset 0h) indicates the physical address of the IMMR block, and the register SPRIDR (offset 108h) indicates the chip model and revision.

I do this using VIRT_IMMRBAR, the virtual address associated with the IMMR.

I've attached the new test.c file that do it.

It works!. The physical address of IMMR is E0000000H, defined in the u-boot file include/configs/MPC8349ITX.h (CFG_IMMRBAR)

test.c

Message Edited by t.dowe on 2009-09-04 12:44 PM

Re: LTIB for mpc8349itx

mii — Fri, 20 Apr 2007 13:59:50 GMT

aurelihein, thanks, it's OK for me too. Thetest.ko file is in the root file system.

Thanks you for your explain.

fjpse, thanks too. I will try your test.c

Mii

PS : I have post a other message on the subject "Add a PCI card on MPC8349E-mITX-GP board "

Re: LTIB for mpc8349itx

aurelihein — Fri, 20 Apr 2007 14:59:22 GMT

Thank you all !
It's working perfectly, I can change the register that i wan't !!!
I'm glad i helped,
We should keep update of what we are all able to do with our board
:smileywink:
I already change the state of GPIOs with your help
The next step will be the local bus with all the parameters

Re: LTIB for mpc8349itx

Rekha — Wed, 24 Oct 2007 19:48:26 GMT

I have the ltib implemented in my board MPC8343

Now I have to activate the temperature sensor(partno. EMC1023) for our board.

At present ltib have the support for the some other temperature sensor. I need to make it compactable to my board. For that what I need to do?

Re: LTIB for mpc8349itx

cathy — Wed, 14 Nov 2007 08:07:10 GMT

Hi aurelihein,

I am new for Ltib.

Can you send me the make file? Thanks very much!

Cathy

Re: LTIB for mpc8349itx

aurelihein — Wed, 14 Nov 2007 16:18:20 GMT

Hi,
Google is your friend don't forget it ! you can download the file here http://download.savannah.nongnu.org/releases/ltib/ltib-6.2.2-sv.tar.gz afterwards you should read the README and the documents in generale...
good luck,
aurelien

Re:Adding new module to the ltib

Rekha — Tue, 27 Nov 2007 18:23:22 GMT

We have compiled the ltib for the powerpc mpc8343.

Its work fine.

Now we need to add a temperature sensor module to the existing ltib. (we have MPC1023 temperature sensor in our board, which is not supported by the ltib)

Can any one tell me the steps to add the new module ot the ltib.

Note: I am new to the kernel development process

Re: Re:Adding new module to the ltib

aurelihein — Tue, 27 Nov 2007 19:43:04 GMT

you have to find a driver for your device or just make it and add your driver to the kernel tree, it doesn't depend of LTIB but the kernel.
To add your driver you have to read what i posted before on this section.
Good luck,
aurelien

Re: LTIB for mpc8349itx

Rekha — Fri, 30 Nov 2007 15:27:07 GMT

fjpse,

I have tried compiling the "hello" module as you said, but I got error while compiling.

I used the your test.c and Makefile only

Error is:

LTIB> cd rpm/BUILD/test/

LTIB> make V=1 ARCH=ppc

make -C ../linux-2.6.10/ M=/home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test

make[1]: Entering directory `/home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/linux-2.6.10'

mkdir -p /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/.tmp_versions

make -f scripts/Makefile.build obj=/home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test

rm -f /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/built-in.o; ar rcs /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/built-in.o

gcc -g2 -gdwarf-2 -m32 -Wp,-MD,/home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/.test.o.d -nostdinc -isystem /home/ppc/try/ltib-mpc8349emds-20060414/rootfs/usr/lib//include -D__KERNEL__ -Iinclude -Iarch/ppc -Wall

-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -ffreestanding -O1 -fomit-frame-pointer -Iarch/ppc -msoft-float -pipe -ffixed-r2 -mmultiple -mstring -Wa,-maltivec -Wdeclaration-after-statement -DMODULE -DKBUILD_BASENAME=test -DKBUILD_MODNAME=test -c -o /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/test.o /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/test.c

Building modules, stage 2.

make -rR -f /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/linux-2.6.10/scripts/Makefile.modpost

scripts/mod/modpost -i /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/linux-2.6.10/Module.symvers vmlinux /home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/test/test.o

/bin/sh: line 1: scripts/mod/modpost: No such file or directory

make[2]: *** [__modpost] Error 127

make[1]: *** [modules] Error 2

make[1]: Leaving directory `/home/ppc/try/ltib-mpc8349emds-20060414/rpm/BUILD/linux-2.6.10'

make: *** [default] Error 2

Can you tell me what mistake I am doing?