Great will try. For the uEnv.txt file, you mean that i can add an optargs 
variable and it will be loaded by u-boot ? Previous version required to 
have a bootcmd variable that would then run the different commands.

Le mercredi 23 juillet 2014 13:43:01 UTC+2, RobertCNelson a écrit :
>
> On Wed, Jul 23, 2014 at 5:37 AM, jpiat <[email protected] <javascript:>> 
> wrote: 
> > Hi, 
> > 
> > i have run Debian Wheezy for some time and made an customized it to 
> enable 
> > the LOGI-Bone support (FPGA based cape) easily by modifying uEnv.txt to 
> > disable eMMC (we use the GPMC port that shares IO with the eMMC) and 
> > updating the kernel. I now try to run Jessie but i face two problems : 
> > 
> > 1) Default Jessie image MLO seems to be configured to boot from eMMC by 
> > default so you need to press the boot button on power-up which is not 
> > convenient when a cape is plugged in 
>
> Either erase the eMMC or use the "--bbb-old-bootloader-in-emmc" flag 
> to setup_sdcard.sh. (note you'll probally have download master 
>
> https://raw.githubusercontent.com/RobertCNelson/omap-image-builder/master/tools/setup_sdcard.sh
>  
> ) 
>
> > 2) uEnv.txt in /boot is almost empty and i don't see the usual variables 
> to 
> > configure uboot boot sequence (optargs, uenvcmd ...) 
>
> Generic options are: 
>
> http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0#uEnv.txt_Rootfs_Partition_.2Fboot.2FuEnv.txt
>  
>
> But cape_disable/cape_enable is available for the beaglebone's 
>
> cape_disable=capemgr.disable_partno=BB-BONE-EMMC-2G 
>
> > 
> > So who can i modify the image to boot from sd-card by default ? How can 
> i 
> > disable eMMC to allow the LOGI-Bone support ? 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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