On 04/18/2014 07:47 AM, Doug wrote:
> I have ArchLinux installed and it reboots fine - shutdown -r now - but
> if I power down and restart it goes to four LED's and stops. If I hold
> down the boot button and power it will then boot.
>
> How do I get it to boot at power up always from the SD card? My boot
> partition has the following files -
>
> 102 -rwxr-xr-x 1 root root 104212 Aug 10 2013 MLO
> 354 -rwxr-xr-x 1 root root 361488 Aug 10 2013 u-boot.img
> 2 -rwxr-xr-x 1 root root 603 Oct 18 2013 uEnv.txt
>
> and uEnv.txt has -
>
> [root@BBBdoug mnt]# cat uEnv.txt
> uenvcmd=run findmmc1; run findmmc0; if run loaduimage; then run
> loadfdt; run mmcboot; fi;
> findmmc1=if test $board_name = A335BNLT; then setenv mmc1 1; else
> setenv mmc1 0; fi
> findmmc0=setenv mmcdev 0; mmc dev ${mmcdev}; if mmc rescan; then
> setenv mmc0 1; else setenv mmc0 0; fi
> mmcroot=/dev/mmcblk0p2 rw
> loadfdt=ext4load mmc ${mmcdev}:2 ${fdtaddr} /boot/dtbs/${fdtfile}
> loaduimage=if ext4load mmc 0:2 ${loadaddr} /boot/zImage; then setenv
> mmcdev 0; else setenv mmcdev 1; if test $mmc0 = 1; then setenv mmcroot
> /dev/mmcblk1p2 rw; fi; ext4load mmc 1:2 ${loadaddr} /boot/zImage; fi
> optargs=coherent_pool=1M
>
> As far as I can tell this is the latest code.
>
> What do I need to do to get it to always boot without intervention
> from the micoSD card?
>
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Here is one of many posts with the details you are looking for. Search
the forums for alarm
http://archlinuxarm.org/forum/viewtopic.php?f=48&t=6011
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