From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 24 Feb 2012 17:35:10 +0100 Subject: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK In-Reply-To: <63D6870D443E63419AC4A0C97B86C092030FCA26@MBXCLUSTER.mdh.local> References: <20120223171716.GA5622@tarshish> <63D6870D443E63419AC4A0C97B86C092030FCA22@MBXCLUSTER.mdh.local> <63D6870D443E63419AC4A0C97B86C092030FCA23@MBXCLUSTER.mdh.local> <63D6870D443E63419AC4A0C97B86C092030FCA24@MBXCLUSTER.mdh.local> <63D6870D443E63419AC4A0C97B86C092030FCA25@MBXCLUSTER.mdh.local> <20120224154055.GB6613@game.jcrosoft.org> <63D6870D443E63419AC4A0C97B86C092030FCA26@MBXCLUSTER.mdh.local> Message-ID: <20120224163510.GC6613@game.jcrosoft.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net On 16:58 Fri 24 Feb , Mikael ?sberg wrote: > > >in barebox wecan boot a raw image and we did on imx to boot in less than 400ms > > Aha, that sounds great! By "raw image" do you mean the vmlinux image? no excatly I'm outside I do'nt have the doc with me but IIRC, I did ~700ms with a zImage with lzo but this will depends on where do you boot from. But this will depends also on your rootfs and so on. Best Regards, J. > > -------------------------------------------------------------- > Mikael ?sberg > PhD student (Doktorand), Computer Engineering > School of Innovation, Design and Engineering > M?lardalen University, V?ster?s Sweden > Phone: +46(0)21 101502 > Room nr: U1-145 > Mail: mikael.asberg at mdh.se > -------------------------------------------------------------- > ________________________________________ > Fr?n: Jean-Christophe PLAGNIOL-VILLARD [plagnioj at jcrosoft.com] > Skickat: den 24 februari 2012 16:40 > Till: Mikael ?sberg > Kopia: Yegor Yefremov; buildroot at busybox.net > ?mne: Re: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > On 16:22 Fri 24 Feb , Mikael ?sberg wrote: > > > > This application is for the automotive industry. In a car, the embedded system must be able to boot within maximum ~1 second. I was thinking, can I use mkimage to convert vmlinux to an uImage (uncompressed version)? > > Or, is there a setting in Buildroot or Barebox where I can specify the builder to not compress the uImage? > in barebox wecan boot a raw image and we did on imx to boot in less than 400ms > > Best Regards, > J. > > > > -------------------------------------------------------------- > > Mikael ?sberg > > PhD student (Doktorand), Computer Engineering > > School of Innovation, Design and Engineering > > M?lardalen University, V?ster?s Sweden > > Phone: +46(0)21 101502 > > Room nr: U1-145 > > Mail: mikael.asberg at mdh.se > > -------------------------------------------------------------- > > ________________________________________ > > Fr?n: Yegor Yefremov [yegorslists at googlemail.com] > > Skickat: den 24 februari 2012 16:10 > > Till: Mikael ?sberg > > Kopia: buildroot at busybox.net > > ?mne: Re: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > > > I don't know, if it is possible to pack vmlinuz in uImage. Why do you need this? > > > > On Fri, Feb 24, 2012 at 3:33 PM, Mikael ?sberg wrote: > > > > > > Ahh ok. Do you know how to create an uImage which is not compressed? > > > > > > -------------------------------------------------------------- > > > Mikael ?sberg > > > PhD student (Doktorand), Computer Engineering > > > School of Innovation, Design and Engineering > > > M?lardalen University, V?ster?s Sweden > > > Phone: +46(0)21 101502 > > > Room nr: U1-145 > > > Mail: mikael.asberg at mdh.se > > > -------------------------------------------------------------- > > > ________________________________________ > > > Fr?n: Yegor Yefremov [yegorslists at googlemail.com] > > > Skickat: den 24 februari 2012 15:06 > > > Till: Mikael ?sberg > > > Kopia: buildroot at busybox.net > > > ?mne: Re: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > > > > > This is zImage with u-boot specific wrapper. uImage will be created > > > from zImage using mkimage tool. > > > > > > Yegor > > > > > > On Fri, Feb 24, 2012 at 2:53 PM, Mikael ?sberg wrote: > > >> Hi, > > >> > > >> Ok, but is uImage a compressed file like zImage? If yes, can I de-compress it somehow? > > >> > > >> Regards > > >> > > >> -------------------------------------------------------------- > > >> Mikael ?sberg > > >> PhD student (Doktorand), Computer Engineering > > >> School of Innovation, Design and Engineering > > >> M?lardalen University, V?ster?s Sweden > > >> Phone: +46(0)21 101502 > > >> Room nr: U1-145 > > >> Mail: mikael.asberg at mdh.se > > >> -------------------------------------------------------------- > > >> ________________________________________ > > >> Fr?n: Yegor Yefremov [yegorslists at googlemail.com] > > >> Skickat: den 24 februari 2012 14:33 > > >> Till: Mikael ?sberg > > >> Kopia: Baruch Siach; buildroot at busybox.net > > >> ?mne: Re: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > >> > > >> AFAIK it is always uImage format for both u-boot and barebox. RedBoot > > >> has used zImage. > > >> > > >> Yegor > > >> > > >> On Fri, Feb 24, 2012 at 2:19 PM, Mikael ?sberg wrote: > > >>> Hey, > > >>> > > >>> Ok great, thx! > > >>> > > >>> One last thing, depending on which bootloader that is used, i.e., u-boot, barebox etc., does it matter which kernel image that is used for the boot (zImage, uImage, vmlinux)? > > >>> If I use barebox, which image can I use? (I prefer an uncompressed kernel) > > >>> > > >>> Kind regards > > >>> > > >>> -------------------------------------------------------------- > > >>> Mikael ?sberg > > >>> PhD student (Doktorand), Computer Engineering > > >>> School of Innovation, Design and Engineering > > >>> M?lardalen University, V?ster?s Sweden > > >>> Phone: +46(0)21 101502 > > >>> Room nr: U1-145 > > >>> Mail: mikael.asberg at mdh.se > > >>> -------------------------------------------------------------- > > >>> ________________________________________ > > >>> Fr?n: Baruch Siach [baruch at tkos.co.il] > > >>> Skickat: den 23 februari 2012 18:17 > > >>> Till: Mikael ?sberg > > >>> Kopia: buildroot at busybox.net > > >>> ?mne: Re: SV: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > >>> > > >>> Hi Mikael, > > >>> > > >>> Please keep the list in Cc. > > >>> > > >>> On Thu, Feb 23, 2012 at 02:35:37PM +0100, Mikael ?sberg wrote: > > >>>> Hi, > > >>>> > > >>>> Thanks a lot for the info! > > >>>> > > >>>> I guess its easier to use Barebox, then you just also specify mxs_defconfig > > >>>> when you configure. > > >>> > > >>> You original question was about the Linux kernel not Barebox. > > >>> > > >>> Barebox includes support for the TX28 board which is based on i.MX28 > > >>> (tx28stk5_defconfig). > > >>> > > >>>> One more thing, since i.MX28 uses the "454MHz ARM926EJ-S" processor, should > > >>>> I choose "arm926t" in the config? > > >>> > > >>> The kernel (and Barebox) defconfig files should include all the relevant > > >>> settings, including this one. > > >>> > > >>> baruch > > >>> > > >>>> Fr?n: Baruch Siach [baruch at tkos.co.il] > > >>>> Skickat: den 23 februari 2012 13:38 > > >>>> Till: Mikael ?sberg > > >>>> Kopia: buildroot at busybox.net > > >>>> ?mne: Re: [Buildroot] Compile Linux with Buildroot for i.MX28 EVK > > >>>> > > >>>> Hi Mikael, > > >>>> > > >>>> On Thu, Feb 23, 2012 at 12:22:09PM +0100, Mikael ?sberg wrote: > > >>>> > Does anyone have experience with compiling Linux kernels with Buildroot for > > >>>> > i.MX28 EVK? > > >>>> > I'm not sure which board name to be set for u-boot for example... > > >>>> > Also, which defconfig should be used, imx27ads_defconfig or versatile_defconfig perhaps? > > >>>> > > > >>>> > Any help or pointers would be valueable! > > >>>> > > >>>> Although it's named i.MX28, this chip is very different from i.MX27, but is > > >>>> similar to i.MX23. Latest kernels (since v3.0) contain mxs_defconfig, which > > >>>> should be suitable for i.MX28 (and i.MX23). > > >>>> > > >>>> baruch > > >>> > > >>> -- > > >>> http://baruch.siach.name/blog/ ~. .~ Tk Open Systems > > >>> =}------------------------------------------------ooO--U--Ooo------------{= > > >>> - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il - > > >>> _______________________________________________ > > >>> buildroot mailing list > > >>> buildroot at busybox.net > > >>> http://lists.busybox.net/mailman/listinfo/buildroot > > _______________________________________________ > > buildroot mailing list > > buildroot at busybox.net > > http://lists.busybox.net/mailman/listinfo/buildroot