Date: Tue, 30 Oct 2012 23:09:14 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Tim Kientzle <tim@kientzle.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Alie Tan <alie@affle.com> Subject: Re: BeagleBone questions (was Re: Towards an ARM system-building script) Message-ID: <CAJ-Vmon=fESLo9B63Ovi9AeeY1F-J8fxHwBpYVMxPOb=xap9GA@mail.gmail.com> In-Reply-To: <E0E2DB38-0F51-4E9E-822B-F03022676FD1@kientzle.com> References: <CANuCnH-Y_Bixer7s5EEU4sJVjRC7s3QQbpJeevdXTpxS2K0OqA@mail.gmail.com> <2E208EEB-B2CF-4AC6-B420-03FB4CF08041@freebsd.org> <1351522908.1123.356.camel@revolution.hippie.lan> <CANuCnH9KcRvp2yKeKg6Tp%2Ba2tZLc7RdhRzQiQ9C2VDcHZwAEEg@mail.gmail.com> <CAJ-VmokQmJbr0P4xp9PHHXC5_q0Fte18atvQu28QX%2B2oZiYmrw@mail.gmail.com> <1351550400.1123.364.camel@revolution.hippie.lan> <CANuCnH_Dc1XWUmhHmmpOHTGy%2Bjh5AjuVrOzVKE-QA=3zjfTDRA@mail.gmail.com> <CAJ-Vmom3oPr_e4BrR6-qV0bwLL9S39RJo-hUxo3XYfni71dn8g@mail.gmail.com> <CAJ-Vmont=W5fsF_rw0VBQ1V9Ki0GzXtmmaJUgfPbQWUTHbrOXA@mail.gmail.com> <E0E2DB38-0F51-4E9E-822B-F03022676FD1@kientzle.com>
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Right, and the ARMv6 code has no cpufunc_sleep method either. :-) Sounds like a mini-project! Just be aware of the platform requirements! (ie, mav@'s timer code puts very specific requirements on the behaviour of the halt/wait loop; I'm still not convinced anything bar i386/amd64 "hlt" are doing the right thing. Yes, this includes MIPS. :( ) Adrian On 30 October 2012 23:01, Tim Kientzle <tim@kientzle.com> wrote: > > On Oct 30, 2012, at 9:20 AM, Adrian Chadd wrote: > >> .. ah. armv5 has no sleep "halt" function, so it's just spinning. >> Chances are that's a good candidate for why things are running too >> warm. > > RaspberryPi uses a Broadcom BCM2835 with an ARM1176JZF-S core (ARMv6). > > BeagleBone uses a TI Sitara AM3358 with an ARM Cortex-A8 core (ARMv7). > > Tim >
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