On 12-04-11 11:34 AM, Om Prakash PAL wrote:
Hi Bruce,
I need some more info
[1].I want to add kernel dir path into SRC_URI(in
meta-<bsp_name>/recipe-kernel/linux/linux_3.0.bb), how can we add it ? i.e.
lets imagine that my kernel is located in dir /local/kernel/*
How we can add this kernel into SRC_URI?.(imagine that we don't have git:// and
http: path, we have just dir where my kernel is located)
I do it this way in meta-kernel-dev:
http://git.yoctoproject.org/cgit/cgit.cgi/poky-extras/plain/meta-kernel-dev/recipes-kernel/linux/linux-yocto-dev.bbappend
In particular the protocol=file should be noticed.
[2] we want to create BSP for our board that is based on arm-cortex-A9 but we
don't have meta/conf/machine/include/tune-armcortexa9.inc file in current yocto.
How can we create it?.
Answered this one previously.
Cheers,
Bruce
Thanks,
Best Regards,
Om Prakash Pal
-----Original Message-----
From: Bruce Ashfield [mailto:bruce.ashfi...@gmail.com]
Sent: Monday, April 09, 2012 11:04 PM
To: Om Prakash PAL
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Porting of specific Kernel/Driver into yocto.
On Mon, Apr 9, 2012 at 12:31 PM, Om Prakash PAL
<omprakash....@stericsson.com> wrote:
Hi Bruce,
Thanks for you help.
As you have mentioned, its working properly.
I want to know that is there any better way of doing same thing for my scenario
?:
here is my scenario:
We have development branch where we write/modify our kernel/driver code i.e.
thats our local kernel repository(git rep)
and lots of driver/files being modified everyday-->so I have to take the same
effect into yocto kernel also----> so except creating patches for all modified
drivers and creating .bbappend files, is there any better way of doing same thing .
Aha. Missed that.
Just create a simple recipe that points at your git repository in the SRC_URI.
If all the changes are in the tree, and you have a defconfig and you
are building
the master branch. Then pretty much everything you need can be specified in
the SRC_URI .. and that's the entire recipe.
If you look in oe-classic, meta-ti or any one of a number of other
layers, you'll
find recipes that do just that.
The meta-kernel-dev (in the poky extras) layer has an example of using the
kernel.org tree with the yocto kern tools, and once yocto 1.3 opens up for
submissions, I have a set of changes prep'd that make it relatively simple to
use the yocto kern tools against different types of repository.
So the summary is: Depending on the type of tooling you need, and what baseline
you need for your work .. there are a number of ways to do things.
Is there anyway that instead of using yocto-kernel tree, can we use our local
kernel-tree for building images?. (should I create separate BSP ?)
You should definitely create a BSP, that way you can tune the system specific
to your board,
Cheers,
Bruce
Thanks in advance.
Best Regards,
Om Prakash Pal
________________________________________
From: Bruce Ashfield [bruce.ashfi...@windriver.com]
Sent: Monday, April 09, 2012 9:32 AM
To: Om Prakash PAL
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Porting of specific Kernel/Driver into yocto.
On 12-04-08 10:04 AM, Om Prakash PAL wrote:
Hi Bruce,
Thanks for your reply.
I am totally new to Yocto.
I have gone through the section BSP/Linux kernel configuration and if I am not
wrong then it explains how can we configure the kernel, not the how we can
add/replace a component(driver etc).
lets take the example of UART driver, I want to add my own UART driver code.
Should I write a separate recipe file (.bb) for UART Driver?.
if yes then I have to write the recipe files for all my drivers that will be
very time consuming.
Is there any other way that I can port all my desired drivers into Yocto
kernel?.
No recipes are required per-driver, unless you are building them all
as out of tree modules.
The typical way this is done is to simply work in the extracted linux
src tree (build/tmp/work/<your board>/linux-yocto-<hashes>/linux), manually
patch, or copy your drivers into the tree. At this point, you'll port
the drivers, doing test builds (bitbake -f -c compile linux-yocto) to
ensure that your port is working. When you've completed the build phase,
boot tests would be in order. (Do not do a 'clean' or you'll lose in
progress changes).
When you are happy with the changes, the directory where you were working
is with the kernel git repository. So you can simply commit your
changes, and generate patches.
git format-patch -o<your directory> HEAD^ (or however many commits
you have)
Take those patches, create a layer with a bbappend and add them like
any other patch to any package. They'll be applied to subsequent builds
of the kernel.
I'm skipping a lot of detail there, but it is all found in the various
manuals, and I don't want to repeat it here.
Cheers,
Bruce
Please help me.
Thanks a lot in advance.
Best Regards,
Om Prakash Pal
________________________________________
From: Bruce Ashfield [bruce.ashfi...@windriver.com]
Sent: Wednesday, April 04, 2012 6:17 PM
To: Om Prakash PAL
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Porting of specific Kernel/Driver into yocto.
On 12-04-04 04:46 AM, Om Prakash PAL wrote:
Hi,
I want to build my local kernel/Driver code, not the default one.
please help how can i do it ?.
any wiki/docs on this?.
The BSP developer guides show how to extend the yocto kernels, and
also have sections on custom/different kernel versions. Have you
seen that doc yet ? Or have you seen it, and have specific questions ?
Bruce
Best Regards,
Om Prakash Pal
_______________________________________________
yocto mailing list
yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/yocto
_______________________________________________
yocto mailing list
yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/yocto
_______________________________________________
yocto mailing list
yocto@yoctoproject.org
https://lists.yoctoproject.org/listinfo/yocto
