Date: Tue, 28 Oct 2014 23:49:18 -0700 From: Rui Paulo <rpaulo@me.com> To: Daisuke Aoyama <aoyama@peach.ne.jp> Cc: freebsd-arm@freebsd.org Subject: Re: FreeBSD 11-CURRENT on Raspberry Pi 512MB Message-ID: <C9E25385-E665-4895-96CE-DCC71B36FF3B@me.com> In-Reply-To: <0A8390C3FC2B444B9AA8AC934B79DCD6@ad.peach.ne.jp>
index | next in thread | previous in thread | raw e-mail
On Oct 28, 2014, at 18:20, Daisuke Aoyama <aoyama@peach.ne.jp> wrote: > > I've created FreeBSD 11-CURRENT for RPi based on svn 273303. > > The first version is released at my Japanese blog: > > Download and tips > http://shell.peach.ne.jp/aoyama/archives/2931 > Initial setup of FreeBSD 11 on RPi > http://shell.peach.ne.jp/aoyama/archives/2946 > Package installation of Apache 2.4(event MPM), MySQL 5.6, PHP 5.6(ZTS) and phpMyAdmin. > http://shell.peach.ne.jp/aoyama/archives/2951 > > The pre-build base images are available from my archives: > http://www.peach.ne.jp/archives/rpi/ > (Latest version is FreeBSD-armv6-11.0-RPI-B-test20-r273303-20141026.img.gz) > > Download and decompress it, then write it to an SD card of 8GB or more. > This image is intended to use as a headless server. (No X11 and GPU 16MB) > For quick playing, I provide some useful packages such as samba 4.1, AMP. > > This version have cpufreq(4) based frequency contoller. > Clock frequencies can be dynamically changed by hand or powerd. > Also realtime raw values including temperature are stored in hw.cpufreq: > > Example overclock at 1000MHz: > > # sysctl hw.cpufreq > hw.cpufreq.arm_freq: 1000000000 > hw.cpufreq.core_freq: 500000000 > hw.cpufreq.sdram_freq: 500000000 > hw.cpufreq.turbo: 1 > hw.cpufreq.voltage_core: 6 > hw.cpufreq.voltage_sdram_c: 1 > hw.cpufreq.voltage_sdram_i: 1 > hw.cpufreq.voltage_sdram_p: 1 > hw.cpufreq.temperature: 50843 > > # sysctl dev.cpu > dev.cpu.%parent: > dev.cpu.0.%desc: Open Firmware CPU > dev.cpu.0.%driver: cpu > dev.cpu.0.%location: > dev.cpu.0.%pnpinfo: name=cpu@0 compat=arm,1176jzf-s > dev.cpu.0.%parent: cpulist0 > dev.cpu.0.freq: 300 > dev.cpu.0.freq_levels: 1000/-1 900/-1 800/-1 700/-1 600/-1 500/-1 400/-1 300/-1 > > > Note: > Do not build kernel without patch to bcm2835_mbox.c, otherwise you get a panic in msleep. > > Using config is here: > http://www.peach.ne.jp/archives/rpi/config/RPI-B-test20 > > Source and pacth is here: > http://www.peach.ne.jp/archives/rpi/patch/ > > Local packages is here: > http://www.peach.ne.jp/archives/rpi/ports/packages/All/ > > > Pre-configured: > > MEM 496MB/GPU 16MB/SWAP none > Clock: ARM 800MHz/Core 400MHz/SDRAM 400MHz (overclock from 700/250/400) > ntpdate: 0.freebsd.pool.ntp.org > portsnap: fetch and extracted > powerd: enabled (min 300MHz) > > See also: > http://www.peach.ne.jp/archives/rpi/00README.txt This is pretty interesting. Is anyone already helping you merge your code to FreeBSD? Some questions: - Did you measure the power consumption when using the different frequency values? - Could you also export the temperature in dev.cpu.0.temperature like coretemp/amdtemp? You'd need to perform a device lookup and then lookup its sysctl context. One suggestion I have is to move the register definition structures to a header file like bcm2835_cpufreq.h. There are some style issues with your patch, but I think it's pretty close to being ready. -- Rui Paulohome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?C9E25385-E665-4895-96CE-DCC71B36FF3B>