On 10/22/14 20:47, Jordan Justen wrote: > On Wed, Oct 22, 2014 at 11:28 AM, Laszlo Ersek <ler...@redhat.com> wrote: >> On 10/22/14 20:05, Jordan Justen wrote: >>> Laszlo, >>> >>> Seabios starts to boot the OS nearly instantaneously. OVMF takes >>> several seconds. >>> >>> I think in OVMF today this is mainly due to timeouts waiting for a >>> non-existent floppy and/or CD ROM. >>> >>> This series adds a few more seconds waiting on the boot screen >>> timeout. This seems to be heading in the wrong direction in terms of >>> boot time. >> >> I can try lowering PcdPlatformBootTimeOut to zero. According to the >> PCD's documentation, that's a valid value, and on a second look, even >> PlatformBdsEnterFrontPage() / ShowProgress() support a TimeoutDefault==0. >> >> This would even shave off 0.3 seconds from the boot time (without >> breaking the behavior when the user hits a key on the splash screen). >> >> Calling PlatformBdsEnterFrontPage() unconditionally seems unavoidable, >> according to the advice I got from Eric. Otherwise the OsIndications >> variable will not be picked up. >> >> I considered briefly to look at OsIndications directly in our >> PlatformBdsPolicyBehavior() function, but that would be very wrong. >> >> So, how about the patchset with PcdPlatformBootTimeOut|0 ? > > Sure, if 0 means 0 time. I think it might mean infinity.
The commit message of patch 3 quotes IntelFrameworkModulePkg.dec: The number of seconds that the firmware will wait before initiating the original default boot selection. A value of 0 indicates that the default boot selection is to be initiated immediately on boot. The value of 0xFFFF then firmware will wait for user input before booting. 0xFFFF means "infinity" in the sense that the setup tool is entered immediately, which blocks on user input. And, TimeoutDefault==0 causes ShowProgress() [IntelFrameworkModulePkg/Universal/BdsDxe/FrontPage.c] to return EFI_TIMEOUT immediately. Do you want me to repost the entire set, or just patch 6? Thanks Laszlo ------------------------------------------------------------------------------ _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
