From owner-freebsd-arm@FreeBSD.ORG Wed Oct 31 06:09:15 2012 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9AF32F6C for ; Wed, 31 Oct 2012 06:09:15 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id 60DF38FC14 for ; Wed, 31 Oct 2012 06:09:15 +0000 (UTC) Received: by mail-pb0-f54.google.com with SMTP id rp8so787028pbb.13 for ; Tue, 30 Oct 2012 23:09:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=CLK5hWYNpFVHYqXcVV3QsqFbGSglVusAHmEitS4joo0=; b=NRRZuJxmaMLEZXTK+12nOM7/dmFIujU900J6t1SILFLM7PEOSB3q73bv74TuU6Z35X RaujJdNjVnvMc6KlsoHXpeIxuH3OMpeihlqmrRNr5cPcOBx0VEo0wG6jatty76W9kmq9 1y22COwleZzkVLB/cbZUJe0pcjE4WFUVm0DW8F4WN7lPsEJxjdxpPFNsdPjy/LMGMuVu vg0zxz95lB2zNazqiNT1yFXRozluo7v3xgYLjn+81MI8iRmQKlRncLOWY6caCV6tlziL 28HyxAAuUCMlBJXotUmj+ittAar6DA2mymGUl8YR1X7E1KRMTRqMJz9ixnzKPYvm/qu7 mnbA== MIME-Version: 1.0 Received: by 10.68.132.165 with SMTP id ov5mr108161383pbb.105.1351663754857; Tue, 30 Oct 2012 23:09:14 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.68.124.130 with HTTP; Tue, 30 Oct 2012 23:09:14 -0700 (PDT) In-Reply-To: References: <2E208EEB-B2CF-4AC6-B420-03FB4CF08041@freebsd.org> <1351522908.1123.356.camel@revolution.hippie.lan> <1351550400.1123.364.camel@revolution.hippie.lan> Date: Tue, 30 Oct 2012 23:09:14 -0700 X-Google-Sender-Auth: p_2nOXtVOQ5_FGZxESEXJJHYAcA Message-ID: Subject: Re: BeagleBone questions (was Re: Towards an ARM system-building script) From: Adrian Chadd To: Tim Kientzle Content-Type: text/plain; charset=ISO-8859-1 Cc: "freebsd-arm@freebsd.org" , Alie Tan X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Oct 2012 06:09:15 -0000 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 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 >