[U-Boot-Users] Registering Interrupt Handlers for ARM920T-Based boards

Wolfgang Denk wd at denx.de
Tue Dec 21 13:15:01 CET 2004


in message <698a2fda04122102305936b3ab at mail.gmail.com> you wrote:
> How do I register an interrupt handler in U-Boot?  My customer is

You don't. U-Boot does not need interrupts. Everything  can  be  done
using polling drivers.

> persistent in flow controls in binary image downloading.  I am now

Tell him  that  no  such  thing  is  needed.  Serial  download  works
poerfectly fine withouty flow control.

> free to support hardware flow control or XON/XOFF.  Can somebody
> please give me guidelines on how to create support for hardware flow
> control on my ns16550-based serial driver?  I am using smdk2410 as my

The simple answer is: DON'T.

> template.  Maybe, the initial step is how do I register my interrupt
> handlers?

No. That would be your second step on t he wrong way.

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
"Everybody is talking about the  weather  but  nobody  does  anything
about it."                                               - Mark Twain

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