[U-Boot] 'usb start' works very unstable

[Wolfgang Denk]

Dear Sergei,

In message <20100807101848.636cb978 at mosly> you wrote:
>
> I have 250GB USB-HDD attached to sheevaplug and using u-boot
> 
>     U-Boot 2010.03-00176-g42f7128 (Aug 06 2010 - 22:24:34)
>     Marvell-Sheevaplug
> 
> It's a tip of 'u-boot-marvell/testing' branch.

Did you try current mainline instead?  It is usually not recommended
to use any of the custodian trees and especially their testing
branches unless you know _exactly_ what these contain and what you are
looking after.

>     [   23.015860] scsi0 : usb-storage 1-1:1.0
>     [   26.054268] scsi 0:0:0:0: Direct-Access     StoreJet  Transcend            PQ: 0 ANSI: 2 CCS
>     [   28.774083] sd 0:0:0:0: [sda] 488397168 512-byte logical blocks: (250 GB/232 GiB)
...

>       Device 0: Vendor: StoreJet Rev:  Prod:  Transcend
>                 Type: Hard Disk
>                 Capacity: 28759.9 MB = 28.0 GB (488397168 x 512)
>
> Heh, capacity is reported incorrectly, but it works am I'm able
> to load kernel from there.

The reason for this is that the multiplication 488397168 x 512 will
overflow a 32 bit integer as used in "disk/part.c"; this shouldbe
fixed...

> All these things are almost 100% reproducible.
>
> Vendor-shipped (Marvell's) u-boot has exactly the same disease:
>  ** MARVELL BOARD: SHEEVA PLUG LE 
> U-Boot 1.1.4 (Mar 19 2009 - 16:06:59) Marvell version: 3.4.16

This can be anything - issues with the USB driver, missing or
incorrect initializatioon of the SoC, or even hardware issues.

Can you try to debug it?

Best regards,

Wolfgang Denk

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