FWIW ttps://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf On 9/23/21 6:28 AM, FMDF wrote: > On Thu, 23 Sep 2021, 11:57 Ruben Safir, <ruben@xxxxxxxxxxxx > <mailto:ruben@xxxxxxxxxxxx>> wrote: > > > Why does it need the bootloader to do any of that. > > > You still don't want to listen: the OS does not need to use bootloaders > to do the things that Greg and I listed. > > It needs UEFI runtime services; please don't be lazy and read Wikipedia > article whose I provided the link. > > This is copy-pasted for your convenience: > > "The Unified Extensible Firmware Interface (UEFI)[1] > <https://en.m.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface#cite_note-1> is > a publicly available specification > <https://en.m.wikipedia.org/wiki/Specification> that defines a > software interface > <https://en.m.wikipedia.org/wiki/Interface_%28computer_science%29> between > an operating system > <https://en.m.wikipedia.org/wiki/Operating_system> and > platform firmware <https://en.m.wikipedia.org/wiki/Firmware>. UEFI > replaces the legacy Basic Input/Output System (BIOS > <https://en.m.wikipedia.org/wiki/BIOS>) firmware interface originally > present in all IBM PC-compatible > <https://en.m.wikipedia.org/wiki/IBM_PC_compatible> personal computers > <https://en.m.wikipedia.org/wiki/Personal_computer>,[2] > <https://en.m.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface#cite_note-Intel2000-2>[3] > <https://en.m.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface#cite_note-ElReg1-3> with > most UEFI firmware implementations providing support for legacy BIOS > services[]". > > If you spend few minutes there, you'll find also information there about > the two different logical roles of UEFI: > > "EFI defines two types of services: boot services and runtime > services. Boot services are available only while the firmware owns the > platform (i.e., before the ExitBootServices() call), and they include > text and graphical consoles on various devices, and bus, block and file > services. Runtime services are still accessible while the operating > system is running; they include services such as date, time and NVRAM > <https://en.m.wikipedia.org/wiki/Non-volatile_random-access_memory> access.". > > Boot services are available only while the firmware owns the platform, > so please stop saying "Why does it need the bootloader to do any of that[?]" > > I told you that Linux can be booted without bootloaders, but that it > still needs the UEFI runtime services. I also provided a link to the > Kernel official documentation to prove it. > > Anyway, it really looks like you don't care to listen and that your main > interest is standing by your own (unsubstantiated) positions. > > Thanks, > > Fabio > > > _________________ > > > Kernelnewbies mailing list > > Kernelnewbies@xxxxxxxxxxxxxxxxx > <mailto:Kernelnewbies@xxxxxxxxxxxxxxxxx> > > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > <https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies> > -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
