Date: Thu, 22 Jan 2015 10:16:15 -0700 From: Warner Losh <imp@bsdimp.com> To: Andrew Turner <andrew@fubar.geek.nz> Cc: freebsd-arm@freebsd.org Subject: Re: interrupt framework Message-ID: <D0428AC8-E748-4CA1-895D-C96EDBC05E76@bsdimp.com> In-Reply-To: <20150122101213.5b0f6aea@bender.lan> References: <CAFHCsPX5kG_v-F-cjpyMQsT_b386eok=mqWW0%2BEUb_4-_1Otnw@mail.gmail.com> <54BA9888.1020303@freebsd.org> <CAFHCsPX-X-OG4jGLbhdH1BVtqorJKUeaVbzabX-%2BUfEM2fhD6A@mail.gmail.com> <54BD3F86.3010901@freebsd.org> <CAFHCsPUqq-o4z9c5_8SYxcefUiFvGADB5FnB5NiQuu6XBrdyng@mail.gmail.com> <54BD9794.4080204@freebsd.org> <CAFHCsPXLvwJ_5FJaeoKSHjbgmtwzSXFtuPr1h=bO1g9tghyDog@mail.gmail.com> <54BE7E6D.6060800@freebsd.org> <FB774FC2-CDF0-4E3F-95B8-59755EA54CCC@bsdimp.com> <20150121180916.110fc8ad@bender.lan> <74044D4B-A841-48E0-88CD-73B659454B86@bsdimp.com> <20150122101213.5b0f6aea@bender.lan>
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> On Jan 22, 2015, at 3:12 AM, Andrew Turner <andrew@fubar.geek.nz> wrote: > > On Wed, 21 Jan 2015 16:32:47 -0700 > Warner Losh <imp@bsdimp.com> wrote: >>> On Jan 21, 2015, at 11:09 AM, Andrew Turner <andrew@fubar.geek.nz> >>> wrote: >>> >>> On Wed, 21 Jan 2015 10:50:14 -0700 >>> Warner Losh <imp@bsdimp.com> wrote: >>>> “usually”? I thought it was always 100%: We’re wither using FDT or >>>> we’re not. Some platforms allow compiling for both (mostly as a >>>> transition aid to FDT), but I’m not aware of any that would be a >>>> mix. >>> >>> There may be a case on arm64 to use both fdt and ACPI. In this case >>> it would be used as a transition to add support for ACPI as some >>> hardware may require it. >> >> Speaking of ACPI, will/can arm64 use UEFI? The two seem to be joined >> at the hip these days… > > On servers I expect UEFI to be used. For more embedded devices, e.g. > phones or tablets, the boot environment will be less standardised. So it would be useful that any UEFI work from user land be architected to potentially support arm64? I’m thinking “yes”. Warnerhelp
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