BBB MMC / SD detection instability with U-Boot 2014.04 (CPU 1GHz)

[Sulev-Madis Silber (ketas)]

On 2014-05-20 15:20, SAITOU Toshihide wrote:
> In message: <20140520.191001.03109216.toshi at ruby.ocn.ne.jp>
>             SAITOU Toshihide <toshi at ruby.ocn.ne.jp> writes:
>> In message: <537ACDB2.9080808 at hot.ee>
>>             "Sulev-Madis Silber (ketas)" <madis555 at hot.ee> writes:
>>>
>>> Actually I guess many people might think like me... "HELL, optimizing
>>> boot time of 1min?! I have more important tasks to do than this".
>>
>> If you have ``device sdhci'' line in conf/BEAGLEBONE, is there any
>> differences by changing mmchs to sdhci in am335x.dtsi and
>> beaglebone-black.dts? And also remove ``status = "disabled"''

Don't edit am335x.dtsi

And beaglebone-black.dts already has proper config.


>>
>> It's needed for me to detect eMMC, and the perfomance is
>> better: http://lists.freebsd.org/pipermail/freebsd-arm/2013-August/006332.html
>>
>> But I don't success to boot from eMMC yet with u-boot-2014.04. I need
>> to change u-boot.
> 
> It was booted from eMMC, though it failed sometimes.

Are you sure it booted from eMMC? Like, I can't find eMMC in loader
(ubldr). So I need SD to complete this part of boot.

Not sure what I need to patch, probably loader? Hopefully the old uboot
can be used as well. Version check or something...


> 
> 
> u-boot-2014.04.tar.bz2
> 
>   patch
> 
>     1. apply these patches:
> 
>          http://lists.freebsd.org/pipermail/freebsd-arm/2014-April/007922.html
>          ~/crochet-freebsd/board/BeagleBone/files/uboot-2013.04_api_api_storage.c.patch
>          ~/crochet-freebsd/board/BeagleBone/files/uboot-2013.04_drivers_mmc_mmc.c.patch
> 
>        patch -p1 or edit.
> 
>     2. add followings to include/configs/am335x_evm.h:
> 
>          #ifndef CONFIG_SPL_BUILD
>          #define CONFIG_CMD_ELF
>          #define CONFIG_API
>          #define CONFIG_SYS_MMC_MAX_DEVICE 2
>          #endif
> 
>     3. comment WATCHDOG in include/configs/ti_am335x_common.h:
> 
>         #define CONFIG_HW_WATCHDOG
>         #define CONFIG_OMAP_WATCHDOG
> 
>         #define CONFIG_SPL_WATCHDOG_SUPPORT
> 
>   build
> 
>     gmake CROSS_COMPILE=arm-eabi- am335x_boneblack_config
>     gmake CROSS_COMPILE=arm-eabi-
> 
> 
>   uEnv.txt
> 
>     bootdelay=2
>     fdtaddr=0x80000100
>     loadaddr=0x88000000
>     loaderdev=disk
>     fdtfile=beaglebo.dtb
>     bootdir=
>     bootfile=ubldr
>     mmcdev=1
>     mmcloados=mmc rescan
>     loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}
>     importbootenv=env import -t $loadaddr $filesize
>     findfdt=setenv fdtfile beaglebo.dtb
>     loadimage=fatload mmc ${mmcdev} ${loadaddr} ${bootfile}
>     loadfdt=fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}; fdt addr ${fdtaddr}
>     mmcboot=bootelf ${loadaddr}
>     nandboot=run mmcboot
> 
> Please ignore ``Card did not respond to voltage select!'' message.
> 

Crochet already has all those patches, so I use uboot from there.