[yocto] install and use "bitbake -c populate_sdk"

[Eddy Lai GMail]

I have tried to copy entire 
"poky/meta-skeleton/recipes-kernel/hello-mod" folder
into my target  (poky/meta-intel/meta-jasperforest/recipes-kernel) and 
then add this line

MACHINE_EXTRA_RRECOMMENDS += "kernel-module-hello-mod"

to conf/local.conf,
but can't see hello-ko in the target binary image (core-image-basic) 
after boot USB from the target hardware,
anything else missed ? (yocto 1.3 + jasperforest BSP on x86_64 target)

Eddy
-----------------------------------
>
> Hi Eddy,
>
> I don't think build core-image-sato-sdk is the right approach.  Have 
> you looked into following the example of hello-mod under 
> meta-skeleton, to use bitbake to build your kernel module?
>
> -Jessica
>
> *From:*Lai Eddy [mailto:eddy.lai.tw at gmail.com]
> *Sent:* Wednesday, January 30, 2013 7:54 PM
> *To:* Zhang, Jessica
> *Cc:* yocto at yoctoproject.org
> *Subject:* Re: [yocto] install and use "bitbake -c populate_sdk"
>
> Thanks Jessica,
>
> why I tried to use "-c populate-sdk" is because that I can find 
> "core-image-sato-sdk"  but no "core-image-basic-sdk" available, and my 
> hardware is a samll jasperforest x86_64 target with 2 serial port and 
> 1 ethernet port only, no display interface.
>
> I'm trying to find if any of following configuration suitable for my 
> kernel module driver develop/debug:
>
> 1. with the x86_64 toolchain sdk installed on my x86_64 host , build 
> my kernel module driver, then scp ".ko" binary to target for 
> insmod/debugging, but the problem I have now is the "make" always 
> pointing to /usr/src/3.2.x kernel source path (my host OS's kernel 
> version), but not the linux-yocto target kernel (3.4.x) source/header 
> path (and I don't know where's the proper 3.4.x target kernel 
> header/source files, is it inside tmp/work/...? )
>
> 2.build and run the "core-image-basic" on my target, and install the 
> sdk created with "bitbake core-image-basic -c populate-sdk", but 
> there's no "/usr/src/.." , "/lib/modules/3.4.x-yocto-stand/build" exist
>
> trying to build the "core-image-sato-sdk to see if that help for 
> target develop now...
>
> Eddy
>
> 2013/1/31 Zhang, Jessica <jessica.zhang at intel.com 
> <mailto:jessica.zhang at intel.com>>
>
> Hi Eddy,
>
> The SDK is meant to be used on development host for cross development 
> instead of target.  Sounds like you need an sdk image which contains 
> the development tools and needed development library and kernel 
> sources.  Please refer to  core-image-sato-sdk for how to customize 
> your image to allow your do development work on target.
>
> Thanks,
> Jessica
>
>
> -----Original Message-----
> From: yocto-bounces at yoctoproject.org 
> <mailto:yocto-bounces at yoctoproject.org> 
> [mailto:yocto-bounces at yoctoproject.org 
> <mailto:yocto-bounces at yoctoproject.org>] On Behalf Of Eddy Lai GMail
> Sent: Thursday, January 24, 2013 5:49 AM
> To: yocto at yoctoproject.org <mailto:yocto at yoctoproject.org>
> Subject: Re: [yocto] install and use "bitbake -c populate_sdk"
>
> Hi,
>
> I have build and boot the image from USB flash disk with the .hddimg 
> created by "bitbake -k core-image-basic"
> have added ssh server inside and make sure the ethernet works well, 
> then use "bitbake -c populate_sdk core-image-basic" to create the 
> "poky_eglibc_xx.sh" under "tmp/deploy/sdk" directory, my plan is to 
> install the sdk into the target system and compile my kernel module 
> there, but now the problem is:
> 1. even I have 8GB USB flash disk, the .hddimg is 420MB only, "df"
> command from target said there's 85MB available only,
>      but the sdk .sh installer image is about 300MB, how can I "extend"
> the target system to use the rest USB disk space? ( it's FAT file system)
>      or how to modify configuration to force build the .hddimg create 
> ~"8GB" file system?
> 2. after that SDK installed into my target system, can I copy (scp) my 
> own kernel module driver source code into the target system then
>      make/compile and try insmod/debug the .ko there?
>      or should I install the sdk on host system, then copy only the 
> compiled .ko into target system for test/debugging?
>
> Eddy
>
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