[U-Boot-Users] [PATCH] USB: shutdown USB before booting

[Wolfgang Denk]

In message <87iqvdzz1u.fsf at denx.de> you wrote:
> 
> This patch fixes a potentially serious issue related to USB which was
> discouvered by Martin Krause <martin.krause at tqs.de> and fixed for
> ARM920T. Martin wrote:
> 
>   Turn off USB to prevent the host controller from writing to the
>   SDRAM while Linux is booting. This could happen, because the HCCA
>   (Host Controller Communication Area) lies within the SDRAM and the
>   host controller writes continously to this area (as busmaster!), for
>   example to increase the HccaFrameNumber variable, which happens
>   every 1 ms.
> 
> This is a slightly modified version of the patch in order to shutdown
> USB when booting on all architectures.
> 
> Signed-off-by: Markus Klotzbuecher <mk at denx.de>
> ---
>  common/cmd_bootm.c |   18 ++++++++++++++++++
>  1 files changed, 18 insertions(+), 0 deletions(-)

Thanks, Markus. This is so urgent that I pull this directly.

Best regards,

Wolfgang Denk

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