67:Option ROM run done                               18,020,791 (207,775)
  70:device setup done                                 18,020,875 (84)
  75:cbmem post                                        18,090,768 (69,892)
  80:write tables                                      18,090,772 (3)
  85:finalize chips                                    18,095,156 (4,383)
  90:load payload                                      18,095,161 (4)
  15:starting LZMA decompress (ignore for x86)         18,095,496 (335)
  16:finished LZMA decompress (ignore for x86)         18,125,067 (29,571)
  99:selfboot jump                                     18,125,101 (33)

If we trust the stamps, that's like 100ms the splash would be shown. On 50hz screen that's five frames. Depending of platform I guess, does OPROM control backlight PWM? Assuming that OPROM may also exit before backlight is really lit, you are left with few frames until payload will wipe the framebuffer.

That's the reasoning why coreboot bootsplash is much ado about nothing.

View Change

To view, visit change 31325. To unsubscribe, or for help writing mail filters, visit settings.