[U-Boot-Users] usb storage support?

[U-Boot-Users] usb storage support?

[YenJung Chang]

Hi, all,

Does u-boot support OHCI? 
README mentions that u-boot only support UHCI, however, there are some
c files named "usb_ohci" in cpu directory. Does it mean u-boot also
supports OHCI?

Does u-boot support write action on usb storage?
I have surfed usb codes, but I only found some functions for reading
from usb storage, no any functions for writing found. Is it true or
just my misunderstanding?

Could someone kindly give me answer or tell me how or where can I get
the answer?

Thanks in advance.
-- 
YJ.

[U-Boot-Users] usb storage support?

[Eric BENARD / Free]

Hi,

Le Vendredi 09 Septembre 2005 10:06, YenJung Chang a ?crit?:
> Does u-boot support OHCI?
> README mentions that u-boot only support UHCI, however, there are some
> c files named "usb_ohci" in cpu directory. Does it mean u-boot also
> supports OHCI?
tested on AT91RM9200, seems to work on Samsung ARM CPU and some PPC.
>
> Does u-boot support write action on usb storage?
> I have surfed usb codes, but I only found some functions for reading
> from usb storage, no any functions for writing found. Is it true or
> just my misunderstanding?
>
I also only tested read capabilities on usb keys. I don't think u-boot can 
write on them.

Eric

[U-Boot-Users] usb storage support?

[Wolfgang Denk]

In message <32653c9705090901068811803@mail.gmail.com> you wrote:
> 
> Does u-boot support OHCI? 

yes, on certain hardware.

> README mentions that u-boot only support UHCI, however, there are some
> c files named "usb_ohci" in cpu directory. Does it mean u-boot also
> supports OHCI?

On that hardare, yes.

> Does u-boot support write action on usb storage?

No.

> I have surfed usb codes, but I only found some functions for reading
> from usb storage, no any functions for writing found. Is it true or
> just my misunderstanding?

At the moment ther eis no write support, enither in USB nor in any of
the underlying file systems.


Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Of course there's no reason for it, it's just our policy.