[U-Boot] [PATCH 1/1] odroid-c2: enable MMC as boot target

[Heinrich Schuchardt]

On 04/14/2017 03:42 PM, Andreas Färber wrote:
> Am 14.04.2017 um 13:46 schrieb Heinrich Schuchardt:
>> To enable booting from MMC the MMC devices 0 and 1 are added to the
> 
> from eMMC
> 
>> BOOT_TARGET_DEVICES.
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>> ---
>> This is a resubmission of
>> https://lists.denx.de/pipermail/u-boot/2017-April/287315.html
>> where this patch was part of patch series which was no longer applicable.
>> ---
>>  include/configs/meson-gxbb-common.h | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/include/configs/meson-gxbb-common.h b/include/configs/meson-gxbb-common.h
>> index cc2b5b6..388f239 100644
>> --- a/include/configs/meson-gxbb-common.h
>> +++ b/include/configs/meson-gxbb-common.h
>> @@ -39,6 +39,8 @@
>>  #include <config_distro_defaults.h>
>>  
>>  #define BOOT_TARGET_DEVICES(func) \
>> +	func(MMC, mmc, 0) \
>> +	func(MMC, mmc, 1) \
> 
> What if booting on SD fails and eMMC is absent? Will that still iterate
> on to DHCP?

Yes, the targets are tried in sequence.
So if neither SD nor eMMC are available DHCP is tried.
You will find the same for a lot of other boards (e.g. wandboard.h).

For details refer to chapter "Boot Target Configuration" in
doc/README.distro.

Best Regards

Heinrich Schuchardt