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

[Sergei Trofimovich <slyfox@inbox.ru>]

> > > > 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...
> > 
> > This issue is still here:
> 
> Sorry for not being clear. What I meant was: this is a bug that needs
> to be fixed (patches welcome).

Oh, I've attached my solution.

> >     $sudo openocd -f /usr/share/openocd/scripts/board/sheevaplug.cfg
> >     Open On-Chip Debugger 0.5.0-dev-00466-g28ddefd (2010-08-06-22:54)
> > ...
> >     > reset
> 
> Hm... I am not sure what exactly the OpenOCD debugger does when you
> run the reset command; eventually it performs some initializations
> (defined in sheevaplug.cfg ?), and/or prevents others. The CPU may, or
> may not, be in the virgin state expected by U-Boot.
> 
> Detach the debugger, and perform a real hard reset instead. Or try to
> configure the debugger not to perform any initializations (i. e. the
> equivalent of the "reset run" command on BDI2000/30000).

Sheevaplug has reset button on the box.  So I've pushed it, no change.

sh-4.0# hdparm /dev/sda

/dev/sda:
 HDIO_DRIVE_CMD(identify) failed: Invalid exchange
 readonly      =  0 (off)
 readahead     = 256 (on)
 geometry      = 30401/255/63, sectors = 488397168, start = 0
sh-4.0# 
sh-4.0# 

<pressed reset button>

U-Boot 2010.06-00267-gb1f95b4 (Aug 07 2010 - 15:30:45)
Marvell-Sheevaplug

SoC:   Kirkwood 88F6281_A0
DRAM:  512 MiB
NAND:  512 MiB
In:    serial
Out:   serial
Err:   serial
Net:   egiga0
88E1116 Initialized on egiga0
Hit any key to stop autoboot:  0 
Marvell>> usb start
(Re)start USB...
USB:   Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 2 USB Device(s) found
       scanning bus for storage devices... 0 Storage Device(s) found

Kernel does not boot as well:
[   22.867512] Waiting for root device /dev/sda3...
[   22.973783] usb 1-1: device descriptor read/64, error -32
[   23.203774] usb 1-1: device descriptor read/64, error -32

-- 

  Sergei
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