1: [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
3: This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org). All board variants are supported.
5: Initial, limited, Raspberry Pi support was introduced in NetBSD 6.0. NetBSD 7.0 adds complete support for the board, along with introducing support for the quad-core Raspberry Pi 2 board.
9: [[!toc levels=2]]
11: <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
13: # Installation
14: - The automatic nightly builds on [nyftp.netbsd.org](http://nyftp.netbsd.org/pub/NetBSD-daily/) provide image files that can be used for installation. The Raspberry Pi and Pi 2 ports will be part of the NetBSD 7 release.
15: - The 'evbarm-earmv6hf/binary/gzimg/' directory contains an rpi.img file that can be used as a single image for both boards.
16: - The 'evbarm-earmv7hf/binary/gzimg/' directory, as of August 6th 2015, contains an armv7.img file that is optimized for Raspberry Pi 2.
17: - The stable build directory will be under netbsd-7/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201412161700Z/evbarm-earmv6hf/binary/gzimg/)
18: - The HEAD/current directory build will be under HEAD/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201508062150Z/evbarm-earmv7hf/binary/gzimg/)
19: - You can build your own version of these images using (for example) './build.sh -m evbarm -a earmv6hf -u release', or './build.sh -m evbarm -a earmv7hf -u release'
20: - <i>gunzip and dd</i> this img to your sd card. For example,
22: dd if=rpi.img of=/dev/disk1
24: - Using a serial console
25: - By default the rpi.img is set to use the HDMI output; to change to using a serial console first mount rpi.img (it's a FAT filesystem)
27: edit cmdline.txt and remove '"console=fb"'
29: - Most (all?) USB-to-TTL serial adapters only connect Tx, Rx and ground, and do not connect any flow control lines. An effect of missing flow control is that you see console output, but cannot type anything. If so, adjust your serial console application's flow control settings to "none".
31: In Kermit, the command is "set flow none".
33: In minicom, run "minicom -s" and set hardware flow control to "no"
35: - Growing the root file-system (**not required with NetBSD -current after 2015-04-07, or by NetBSD 7 after 2015-08-06**)
36: - During the partitioning process, do not delete or format the
37: first MSDOS (FAT) partition, as the Raspberry pi firmware is
38: hard coded to boot on the SDCAD / 1st MSDOS partition / Firmware
39: updates and boot loader.
40: - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
41: - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text to boot into single-user mode.
42: - For the next steps, the root filesystem mustn't be mounted rw. So reboot, and at the prompt to enter the pathname of shell,
43: press return for the default (/bin/sh).
44: - At the # prompt, type
46: "disklabel -i ld0" and press return.
48: - At the partition> prompt type "A" and press return.
50: Adjust disklabel sector from 4194304 to 62333952 [n]?
51: Type "y" and press return.
53: - partition> prompt type "a" and press return.
55: Filesystem type prompt, press return to use the current value (4.2BSD).
56: Start offset prompt, press return to use the current value.
57: Partition size prompt, type "$" and press return to grow the
58: partition to use all available free space.
60: - partition> prompt type "W" to save the changes to the disklabel.
62: Confirm this choice by typing "y" at the Label disk prompt.
63: Type "Q" and press return to quit disklabel.
65: - At the # prompt (shell), type
67: fsck -fy /dev/rld0a
68: resize_ffs -y /dev/rld0a
70: - This may take a few minutes, be patient!
72: fsck -fy /dev/rld0a
73: mount_msdos /dev/ld0e /boot
74: mv /boot/cmdline.txt.orig /boot/cmdline.txt
77: - When the system comes back up, the root file-system will have been expanded to
78: fill the SD card.
80: # Installation with sshramdisk image
81: - You may use the rpi_inst.img.gz file created by an evbarm build.
82: - Connect Ethernet Cable to RPI.
83: - After starting DHCP client, SSH login to with user "sysinst", and password "netbsd".
84: - Be careful to note the ip address given during DHCP so you don't lose your connection
85: - Also for after the sysinst is done and the system reboots
86: - sysinst started!
88: # Updating the firmware
90: You probably don't want to do this. Firmware updates can break things,
91: and the latest firmware that's been tested is already included in the
92: NetBSD build you installed.
94: If you're feeling adventurous (or are the port maintainer), here's what
95: to test whenever you try new firmware:
97: - Audio
98: - OMXPlayer (and [[!template id=man name="vchiq"]])
99: - Serial/framebuffer console
100: - CPU frequency scaling
102: That goes for all of `rpi`.
104: Upstream firmware releases are
105: [on GitHub](https://github.com/raspberrypi/firmware/releases).
106: Copy all files except `kernel*.img` into `/boot` and reboot.
108: # Updating the kernel
109: - Build a new kernel, e.g. using build.sh. It will tell you where the ELF version of the kernel is, e.g.
112: Kernels built from RPI2:
116: - Besides the "netbsd" kernel in ELF format, there is also a "netbsd.bin" kernel that is in a format that the Raspberry can boot.
117: - Depending on your hardware version, copy this either to /boot/kernel.img (First generation Pi, Pi Zero hardware) or to /boot/kernel7.img (Pi 2, Pi 3 hardware)
118: - reboot
120: # Wireless Networking
121: - A Realtek 802.11n USB adaptor configures as urtwn(4).
122: - Configure with wpa_supplicant in /etc/rc.conf -
126: dhcpcd_flags="-q -b"
128: wpa_supplicant_flags="-B -i urtwn0 -c /etc/wpa_supplicant.conf"
129: - A sample wpa_supplicant.conf can be found at /usr/share/examples/wpa_supplicant/wpa_supplicant.conf
131: # GPU
133: ## Video playback
134: Accelerated video playback is supported in NetBSD 7 with the [OMXPlayer](http://pkgsrc.se/multimedia/omxplayer) application and through GStreamer with the [omx](http://pkgsrc.se/multimedia/gst-plugins1-omx) plugin.
136: ## OpenGL ES
137: Accelerated OpenGL ES is supported in NetBSD 7. The GL ES client libraries are included with the [misc/raspberrypi-userland](http://pkgsrc.se/misc/raspberrypi-userland) package.
139: ## Quake 3
140: A Raspberry Pi optimized build of *ioquake3* is available in the [games/ioquake3-raspberrypi](http://pkgsrc.se/games/ioquake3-raspberrypi) package. To use it, the following additional resources are required:
142: - pak0.pk3 from Quake 3 CD
143: - additional pak files from the [games/ioquake3-pk3](http://pkgsrc.se/games/ioquake3-pk3) package
144: - read/write permissions on /dev/vchiq and /dev/wsmouse
146: Place the pak0.pk3 file in the /usr/pkg/lib/ioquake3/baseq3 directory.
148: ## RetroArch / Libretro
149: Using [emulators/retroarch](http://pkgsrc.se/emulators/retroarch) it is possible to run many emulators at full speed the Raspberry Pi. Emulator cores for various gaming consoles are available in the [emulators/libretro-*](http://pkgsrc.se/search.php?so=libretro-) packages. To begin using retroarch:
151: - Install [emulators/retroarch](http://pkgsrc.se/emulators/retroarch)
152: - Install the libretro core for the system you would like to emulate (lets take [emulators/libretro-gambatte](http://pkgsrc.se/emulators/libretro-gambatte), a GameBoy Color emulator, as an example).
153: - Plug in a USB HID compatible Gamepad, such as the Logitech F710 in "DirectInput" mode (set "D/X" switch to "D").
154: - Create a config file for your gamepad using *retroarch-joyconfig*.
155: [[!template id=programlisting text="""
156: $ retroarch-joyconfig -o gamepad.cfg
158: - Launch the emulator from the command-line (no X required):
159: [[!template id=programlisting text="""
160: $ retroarch --appendconfig gamepad.cfg -L /usr/pkg/lib/libretro/gambatte_libretro.so game.gbc
163: # What works (NetBSD 7.0+)
164: - multi-user boot with root on SD card
165: - serial or graphics console (with EDID query / parsing)
166: - DMA controller driver and sdhc(4) support
167: - Audio: works. man page missing.
168: - I²C: works, could use enhancements, man page
169: - GPIO
170: - RNG
171: - SPI: could use enhancements, man page
172: - GPU (VCHIQ) - 3D and video decode. man page missing.
173: - USB (host) - dwctwo(4)
174: - USB Ethernet - usmsc(4)
175: - X windows.
176: - RaspberryPi 2 SMP
178: # What needs work
179: - USB (host); isochronous transfers.
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