Adding that I want MLO, U-Boot, and the EXT-4 all on the eMMC. Will be
using the SD card as a FAT32 for data only.
Thanks,
Kenny
On Friday, July 21, 2017 at 12:05:25 PM UTC-7, Kenny Koller wrote:
>
> Apologies. Reposting because I forgot to fill out the type/categories...
>
>
> I'm comfortable with raw mode booting for SPL/MLO and U-Boot. I'd like to
> configure U-Boot to pull the kernel and DTB from an EXT4 partition on the
> eMMC.
>
> Using strings I decoded the default state of the variables and worked back
> from $bootcmd (please see below).
>
> Must U-Boot be built with mmcdev set to 1? Is there some kind of
> configuration option for this (I'm using the stock Yocto/Poky/Pyro source).
>
> Is another path to use saveenv to store this information in one of the
> hidden eMMC boot sectors (assuming this is where U-Boot grabs this
> information)?
>
> Related: Is there a clever way of partitioning, formatting, dd'ing the
> eMMC without having to load Linux from an SD card and using its tools? Or
> creating an image and writing it raw?
>
> Thanks,
>
> Kenny
>
>
> envboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on
> device ${mmcdev};if run loadbootscript; then run bootscript;else if run
> loadbootenv; then echo Loaded env from${bootenvfile};run importbootenv;fi;
> if test -n $uenvcmd; then echo Running uenvcmd ...;run uenvcmd;fi;fi;fi;
>
>
> mmcdev=0
>
>
> loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr
>
>
> bootscript=echo Running bootscript from mmc${mmcdev} ...; source ${
> loadaddr}
>
>
> loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}
>
>
> bootenvfile=uEnv.txt
>
>
> importbootenv=echo Importing environment from mmc${mmcdev} ...; env import
> -t ${loadaddr}${filesize}
>
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/beagleboard/ccae368b-6d4a-48de-b21e-af36086685c7%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
