[yocto] defconfig file (or fragment files) not used

[Prakash Ks]

just create patch and run bitbake -c patch recipename, then check defconfig
file in your build folder, if your patch worked properly then the changes
will be available in your defconfig file.


Thanks!
Prakash

On Thu, Mar 29, 2018 at 4:12 PM, Vincent Daanen <
vincent.daanen at orthotaxy.com> wrote:

> Hi,
>
>
>
> What’s the difference between fragment and patch ?
>
> I can easily make a patch but how do I make sure the patch will be applied
> to the .config file ?
>
>
>
> Thanks for your help
>
>
>
> Vincent
>
>
>
> *De :* Prakash Ks <prakashpks15 at gmail.com>
> *Envoyé :* jeudi 29 mars 2018 11:46
> *À :* Khem Raj <raj.khem at gmail.com>
> *Cc :* Vincent Daanen <vincent.daanen at orthotaxy.com>;
> yocto at yoctoproject.org
> *Objet :* Re: [yocto] defconfig file (or fragment files) not used
>
>
>
> Hi Vincent,
>
> Its better to create patch and apply from platform specific kernel recipes.
>
> if you need more info let me know.
>
> Thanks!
>
> Prakash
>
>
>
> On Thu, Mar 29, 2018 at 1:55 PM, Khem Raj <raj.khem at gmail.com> wrote:
>
>
>
> On 3/28/18 11:00 PM, Vincent Daanen wrote:
>
> On 3/28/18 9:27 AM, Vincent Daanen wrote:
>
> Hi,
>
> I want to add CAN driver support to the kernel. Here is the procedure
> I
> followed:
>
>   1. Generate a .config file
>   2. Copy it to meta-myWork/recipes-kernel/linux/files/defconfig
>   3. Update it: set at the end the config to enable CAN as follows
>
> # CAN Bus
>
> CONFIG_NET=y
>
> CONFIG_CAN=y
>
> CONFIG_CAN_RAW=y
>
> CONFIG_CAN_BCM=y
>
> CONFIG_CAN_GW=y
>
> #
>
> # CAN Device Drivers
>
> #
>
> CONFIG_CAN_VCAN=y
>
> # CONFIG_CAN_SLCAN is not set
>
> CONFIG_CAN_DEV=y
>
> # CONFIG_CAN_CALC_BITTIMING is not set
>
> # CONFIG_CAN_LEDS is not set
>
> # CONFIG_CAN_SJA1000 is not set
>
>   4. Update the linux-yocto_%.bbappend file as follows
>
> SUMMARY = "Recipe to configure kernel as required"
>
> LICENSE = "CLOSED"
>
> inherit kernel-yocto
>
> FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
>
> SRC_URI += file://defconfig
>
>   5. Request rebuilt:
>
> bitbake linux-yocto-rt -c cleansstate
>
> bitbake -k linux-yocto-rt
>
> Once the image started (with qemu), I check if the CAN is enabled
> (using zcat /proc/config.gz | grep CAN) and I always get “CAN not set”
>
> I also tried using fragment and I got the same result ☹
>
> According the user manual, it seems to me I’m doing the right think!
>
> Does someone know why my defconfig file is not taken into account ?
>
>
> If you are using linux-yocto for your kernel provider then I wouldr
> recommend that you look into developer manual.
>
> you should look into using config fragments to modify the needed
> options e.g. see
> https://www.yoctoproject.org/docs/latest/kernel-dev/kernel-dev.html#cha
> nging-the-configuration
>
>
>
> I don't understand what you mean. That's what I'm doing. I followed the
> procedure described in the link you provide... Can u explain ?
>
>
> Create a file for config fragment say can.cfg and put all options you want
> to change in that file and then add that to SRC_URI
> you dont need to create full defconfig.
>
>
>
> Thanks
>
> Vincent
>
> --
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> yocto at yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
>
>
>
> --
>
> Thanks and Regards,
>
> Prakash K S
>
> +91 9620140303
>



-- 
Thanks and Regards,
Prakash K S
+91 9620140303
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