[U-Boot] u-boot on Minnowboard max

[vinoth eswaran]

Hello Mr.Bin,

     May I know what is the issue , if you could explain I can fix
this in my target and could provide the patch. I am stuck up with this
issue and couldn't able to proceed further.

 Thanks a lot:)


Mit Freundlichen Grüßen
VinothKumar
+49 1798909072


On Wed, Jun 8, 2016 at 7:00 AM, Bin Meng <bmeng.cn at gmail.com> wrote:
> Hi,
>
> On Tue, Jun 7, 2016 at 7:40 PM, vinoth eswaran <evinoth1206 at gmail.com> wrote:
>> Hello Mr.BIn,
>>
>>  I tested using the latest u-boot (u-boot-2016.07-rc1) with
>> CONFIG_GENERATE_ACPI_TABLE=y enabled. I am still facing the same
>> issue, the Linux kernel is not able to initialize the root file system
>> from the sd card. I have attached the logs for your reference.
>>
>> My Analysis:
>> [    1.267312] sdhci-pci 0000:00:12.0: failed to setup card detect
>> gpio -- this error message I am seeing with UEFI firmware also. So I
>> am assuming it is not the issue here.
>>
>> I have done some debugging of MMC initialisation and found that in
>> mmc_rescan function (drivers/mmc/core/core.c)
>>
>> host->ops->get_cd(host) returns 0
>>
>> and the condition is failed. So MMC is not getting intialized.  i
>> checked the return of
>>
>>  !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); and
>> here I am seeing that
>>
>> with U-boot version it is 1FA0000 and bit AND with 0x00010000 is zero
>> (condition fails)
>> with UEFI version it is 1FF0000 and bit AND with 0x00010000 is one
>> (condition succeeded)
>>
>>
>> Do you have any idea why this is happening, any input from your side
>> will help me
>>
>
> Issue identified. Working on a fix. Stay tuned.
>
>> Thanks a lot:)
>>
>>
>> Mit Freundlichen Grüßen
>> VinothKumar
>> +49 1798909072
>>
>
> Please stop top-posting. Thanks!
>
> Regards,
> Bin