On 12/07/17 19:15, Heinrich Schuchardt wrote:
Nope. Interrupts are not supported by U-Boot. To get them running every
architecture implementation would have to be changed.
U-Boot simply uses a call inside the waiting loop to check if new data
is available.
E.g. in UEFI WaitForEvent it will check if new data becomes available on
the serial console or on the network interface inside a loop. In
CheckEvent it will do the same. If data becomes available it will fire
the UEFI event.
OK. What facility does U-Boot provide to allow the CPU to sleep (i.e.
to allow an idling program to avoid running with 100% CPU usage)?
Michael
_______________________________________________
ipxe-devel mailing list
ipxe-devel@lists.ipxe.org
https://lists.ipxe.org/mailman/listinfo.cgi/ipxe-devel
