Hi David, I think EVT_TIMER is required functionality. Many drivers depend on it.
I know it goes away at runtime, but so do the rest of boot services. There's nothing that can be done about that; even the BIOS timer tick was taken over by all modern operating systems, so it wasn't reliably persistent post boot either. Regards, -Ken. -----Original Message----- From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of David F. Sent: Monday, October 23, 2017 4:59 PM To: edk2 developers list Subject: [edk2] Fwd: timer ticks ? Hi, Is there a reliable (always available) way to get a timer tick in an application similar to the old 18.2 per second timer tick from BIOS. That one was always there, high speed access (no slow access to a RTC) and the tick count is known (to approx calculate intervals for polling and other things). In UEFI, EVT_TIMER may not be supported. GetTime may be slow RTC access. It can be a counter only since machine was on. TIA! _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
