On Wed, Sep 19, 2018 at 6:31 PM, Rodney W. Grimes <freebsd-rwg_at_pdx.rh.CN85.dnsmgr.net> wrote: >> On Wed, Sep 19, 2018 at 6:06 PM, Rodney W. Grimes >> <freebsd-rwg_at_pdx.rh.CN85.dnsmgr.net> wrote: >> >> On Wed, Sep 19, 2018 at 5:34 PM, Rodney W. Grimes >> >> <freebsd-rwg_at_pdx.rh.CN85.dnsmgr.net> wrote: >> >> >> On 9/18/18 4:11 AM, Greg V wrote: >> >> >> >> >> >> > >> >> >> > I can confirm that the kernel already worked fine when >> booted >> >> from >> >> >> > 32-bit EFI. >> >> >> > >> >> >> > I booted an old Mac into HardenedBSD using a 32-bit-EFI >> build >> >> of >> >> >> GRUB2 :) >> >> >> >> >> >> >> >> >> Was that a 64-bit version of FreeBSD? My understanding is >> the >> >> 32-bit >> >> >> FreeBSD boots fine, but 64-bit needs work. >> >> > >> >> > You would be hard pressed to find a system with a 64 bit CPU >> that >> >> > could run 64 bit FreeBSD that had a 32 bit EFI implementation. >> >> >> >> Mac mini 2006 with a Core2Duo instead of the stock CoreDuo (and >> the >> >> 2007 model's firmware flashed, but I don't think that impacts >> >> FreeBSD). >> > >> > Yes, that is one of the catagories of rare, a EFI-32 bit system >> that >> > was originally shipped with a 32 bit only CPU, that later got >> upgraded >> > in the field with a 64 bit CPU, that still runs a EFI-32 bios. >> > Are you sure the 2007 firmware is EFI32? I would of thought >> > since they upgraded the base system to a 64 bit CPU they would >> > of shipped it with a EFI-64 bios. >> >> The EFI firmware is technically 64 bit? but it only boots 32-bit >> binaries. >> >> >> https://everymac.com/mac-answers/snow-leopard-mac-os-x-faq/mac-os-x-snow-leopard-64-bit-macs-64-bit-efi-boot-in-64-bit-mode.html >> 'Furthermore, it appears that although subsequently released >> MacBook, >> MacBook Air, and pre-"Mid-2010" Mac mini models all are equipped >> with >> "Core 2 Duo" 64-bit processors and 64-bit EFIs, Apple has blocked >> these >> "consumer-targeted" Macs from booting in 64-bit mode. iMac and >> MacBook >> Pro models released in 2007 with 64-bit EFIs seem to have been >> blocked >> as well.' > > That is not EFI32, so that is not a test case for how FreeBSD boots > on EFI32 systems. That is a restriction apple artificially placed > in the implementation. Yeah, maybe not the best test case, but probably the most common one. What matters to users is that a 32-bit loader (bootia32.efi) is required, whether artificially or not. >> >> And probably just the 2007 model as well :) >> >> >> >> Also, IIRC there were some Intel Atom tablets with 32-bit EFI. >> > >> > Atom N2xx and Z5xx series Atom models cannot run x86-64 >> >> Atom Z3740 ? "Instruction Set: 64-bit" >> >> https://ark.intel.com/products/76759/Intel-Atom-Processor-Z3740-2M-Cache-up-to-1_86-GHz > > The above does not say Atom Z3xxx. If you find a Atom > N2xx or Z5xx based system it most certainly has a EFI32. > >> >> The tablet in question: ASUS VivoTab Note 8 (M80TA) >> https://www.asus.com/us/Tablets/ASUS_VivoTab_Note_8_M80TA/ > > I can not find enough detail to know for certain that tablet > actually has which version of EFI. > You are saying it has EFI32? And if so based on what information? Heard from someone that it only took 32-bit efi binaries. Other Z3xxx users report the same: https://askubuntu.com/questions/775498/ubuntu-on-32-bit-uefi-only-based-tablet-pcReceived on Wed Sep 19 2018 - 13:51:25 UTC
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