[U-Boot] Bug in emmc subsystem

[Jaehoon Chung]

Hi,

On 04/06/2017 03:55 AM, Arno Steffens wrote:
> There seems to be a problem handling emmc with configured GP partition.
> 
> Below the "mmc info". The problem might be that user capacity is calculated/shown as "0".
> At least it shows the GP1 partition with correct size - which is not the case for "mmc hwpartition" - it denies its existence ;)
> 
> Can someone help me to fix this?

Which board do you use? It seems that the initializing mmc might be failed.
After enabling debug option, share the log about mmc.

Best Regards,
Jaehoon Chung

> 
> Thanks a lot.
>          - Arno
> 
> 
>>mmc info
> Device: sdhci at e0100000
> Manufacturer ID: 13
> OEM: 14e
> Name: Q1J54
> Tran Speed: 52000000
> Rd Block Len: 512
> MMC version 5.0
> High Capacity: Yes
> Capacity: 0 Bytes
> Bus Width: 4-bit
> Erase Group Size: 512 KiB
> HC WP Group Size: 8 MiB
> User Capacity: 0 Bytes WRREL
> Boot Capacity: 2 MiB ENH
> RPMB Capacity: 512 KiB ENH
> GP1 Capacity: 1.8 GiB ENH WRREL
> 
>>mmc hwpartition
> Partition configuration:
>         No enhanced user data area
>         No GP1 partition
>         No GP2 partition
>         No GP3 partition
>         No GP4 partition
> Card already partitioned
> Failed!
> 
>>mmc read 0 0 1
> MMC read: dev # 0, block # 0, count 1 ... MMC: block number 0x1 exceeds
> max(0x0)
> 0 blocks read: ERROR
> 
>>mmc dev 0 0
> MMC: block number 0x1 exceeds max(0x0)
> switch to partitions #0, OK
> mmc0(part 0) is current device
> 
> BTW:
> The GP partiton was created in Linux by the mmc-utils with
> “mmc gp create -y 1908736 1 1 0 /dev/mmcblk0”
> 
> Linux can handle this as you can see in boot message:
> [    1.248426] mmc0: new high speed MMC card at address 0001
> [    1.264301] mmcblk0: mmc0:0001 Q1J54A 0 B
> [    1.268525] mmcblk0boot0: mmc0:0001 Q1J54A partition 1 2.00 MiB
> [    1.284605] mmcblk0boot1: mmc0:0001 Q1J54A partition 2 2.00 MiB
> [    1.300666] mmcblk0gp0: mmc0:0001 Q1J54A partition 4 1.82 GiB
> [    1.316563] mmcblk0rpmb: mmc0:0001 Q1J54A partition 3 512 KiB
> [    1.325255]  mmcblk0gp0: p1 p2 p3
> …
> [    3.083325] EXT4-fs (mmcblk0gp0p1): INFO: recovery required on readonly filesystem
> [    3.090893] EXT4-fs (mmcblk0gp0p1): write access will be enabled during recovery
> [    3.189597] EXT4-fs (mmcblk0gp0p1): recovery complete
> [    3.196310] EXT4-fs (mmcblk0gp0p1): mounted filesystem with ordered data mode. Opts: (null)
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