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    1: [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
    2: 
    3: This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org). All board variants are supported.
    4: 
    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.  Raspberry Pi 3 support was added for NetBSD 8, and backported to NetBSD 7 in July of 2017.
    6: 
    7: [[images/raspberrypi.jpg]]
    8: 
    9: [[!toc levels=2]]
   10: 
   11: <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
   12: 
   13: # What works (and what doesn't yet)
   14: 
   15: ## NetBSD 7 before July, 2017
   16: 
   17:  - RaspberryPi 1, and 2 (including SMP)
   18:  - multi-user boot with root on SD card
   19:  - serial or graphics console (with EDID query / parsing)
   20:  - DMA controller driver and sdhc(4) support
   21:  - Audio: works. man page missing.
   22:  - I²C: works, could use enhancements, man page
   23:  - GPIO
   24:  - RNG
   25:  - SPI: could use enhancements, man page
   26:  - GPU (VCHIQ) - 3D and video decode. man page missing.
   27:  - USB (host) - dwctwo(4)
   28:  - USB Ethernet - usmsc(4)
   29:  - X windows.
   30: 
   31: ## NetBSD 7 after July, 2017 and NetBSD 8
   32: 
   33:  - Raspberry Pi 3 (excluding WiFi and bluetooth)
   34: 
   35: ## NetBSD current
   36: 
   37:  - Raspberry Pi 3 bluetooth
   38:  - Raspberry Pi 3 new SD host controller driver
   39: 
   40: ## What needs work
   41: 
   42:  - USB (host); isochronous transfers.
   43:  - WiFi
   44: 
   45: # CPU types
   46: 
   47: Note that one can also use code for earlier models on later models.
   48: 
   49:   - Raspberry Pi 1 uses "earmv6hf".
   50:   - Raspberry Pi 2 uses "earmv7hf".
   51:   - Raspberry Pi 3 uses "earmv7hf".  (NetBSD does not yet have 64-bit support.)
   52: 
   53: # Installation
   54: 
   55:  - 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 are part of the NetBSD 7 release.
   56:     - The 'evbarm-earmv6hf/binary/gzimg/' directory contains an rpi.img file that can be used as a single image for both boards.
   57:     - The 'evbarm-earmv7hf/binary/gzimg/' directory, as of August 6th 2015, contains an armv7.img file that is optimized for Raspberry Pi 2.
   58:     - 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/)
   59:     - The HEAD/current directory build will be under HEAD/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201508062150Z/evbarm-earminstv7hf/binary/gzimg/)
   60:   - 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'
   61:    - <i>gunzip and dd</i> this img to your sd card. For example,
   62: 
   63: 	   dd if=rpi.img of=/dev/disk1
   64: 
   65:  - Using a serial console
   66:    - 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)
   67: 
   68: 	   edit cmdline.txt and remove '"console=fb"'
   69: 
   70:    - 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".
   71: 
   72:       In Kermit, the command is "set flow none".
   73: 
   74:       In minicom, run "minicom -s" and set hardware flow control to "no"
   75: 
   76: ## Installation with sshramdisk image
   77: 
   78:  - You may use the  rpi_inst.img.gz file created by an evbarm build.
   79:  - Connect Ethernet Cable to RPI.
   80:  - After starting DHCP client, SSH login to with user "sysinst", and password "netbsd".
   81:    - Be careful to note the ip address given during DHCP so you don't lose your connection
   82:    - Also for after the sysinst is done and the system reboots
   83:  - sysinst started!
   84: 
   85: ## Installation via ebijun's image
   86: 
   87: Jun Ebihara provides an install image for Raspberry Pi that includes
   88: packages.  It is based on NetBSD-current.  This image is typically
   89: updated every few weeks.
   90: 
   91:  - [https://github.com/ebijun/NetBSD/blob/master/RPI/RPIimage/Image/README](https://github.com/ebijun/NetBSD/blob/master/RPI/RPIimage/Image/README)
   92: 
   93: ## Updating the kernel
   94: 
   95:  - Build a new kernel, e.g. using build.sh. It will tell you where the ELF version of the kernel is, e.g.
   96: 
   97:          ...
   98:          Kernels built from RPI2:
   99:           /Users/feyrer/work/NetBSD/cvs/src-current/obj.evbarm-Darwin-XXX/sys/arch/evbarm/compile/RPI2/netbsd
  100:          ...
  101: 
  102:  - Besides the "netbsd" kernel in ELF format, there is also a "netbsd.bin" kernel that is in a format that the Raspberry can boot.
  103:  - 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)
  104:  - reboot
  105: 
  106: # Wireless Networking
  107: 
  108:   Note that the built-in WiFi in the RPI3 is not yet supported.
  109: 
  110:  - A Realtek 802.11n USB adaptor configures as urtwn(4).
  111:    - Configure with wpa_supplicant in /etc/rc.conf -
  112: 
  113:            ifconfig_urtwn0=dhcp
  114:            dhcpcd=YES
  115:            dhcpcd_flags="-q -b"
  116:            wpa_supplicant=YES
  117:            wpa_supplicant_flags="-B -i urtwn0 -c /etc/wpa_supplicant.conf"
  118:    - A sample wpa_supplicant.conf can be found at /usr/share/examples/wpa_supplicant/wpa_supplicant.conf
  119: 
  120: # GPU
  121: 
  122: ## Video playback
  123: 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.
  124: 
  125: ## OpenGL ES
  126: 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.
  127: 
  128: ## Quake 3
  129: 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:
  130: 
  131:  - pak0.pk3 from Quake 3 CD
  132:  - additional pak files from the [games/ioquake3-pk3](http://pkgsrc.se/games/ioquake3-pk3) package
  133:  - read/write permissions on /dev/vchiq and /dev/wsmouse
  134: 
  135: Place the pak0.pk3 file in the /usr/pkg/lib/ioquake3/baseq3 directory.
  136: 
  137: ## RetroArch / Libretro
  138: 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:
  139: 
  140:  - Install [emulators/retroarch](http://pkgsrc.se/emulators/retroarch)
  141:  - 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).
  142:  - Plug in a USB HID compatible Gamepad, such as the Logitech F710 in "DirectInput" mode (set "D/X" switch to "D").
  143:  - Create a config file for your gamepad using *retroarch-joyconfig*.
  144: [[!template  id=programlisting text="""
  145: $ retroarch-joyconfig -o gamepad.cfg
  146: """]]
  147:  - Launch the emulator from the command-line (no X required):
  148: [[!template  id=programlisting text="""
  149: $ retroarch --appendconfig gamepad.cfg -L /usr/pkg/lib/libretro/gambatte_libretro.so game.gbc
  150: """]]
  151: 
  152: # Developer notes
  153: 
  154: These notes are for people working on improvements to RPI support in NetBSD.
  155: 
  156: ## Updating the firmware
  157: 
  158: You probably don't want to do this. Firmware updates can break things,
  159: and the latest firmware that's been tested is already included in the
  160: NetBSD build you installed.
  161: 
  162: If you're feeling adventurous (or are the port maintainer), here's what
  163: to test whenever you try new firmware:
  164: 
  165: - Audio
  166: - OMXPlayer (and [[!template id=man name="vchiq"]])
  167: - Serial/framebuffer console
  168: - CPU frequency scaling
  169: 
  170: That goes for all of `rpi[0123]`.
  171: 
  172: Upstream firmware releases are
  173: [on GitHub](https://github.com/raspberrypi/firmware/releases).
  174: Copy all files except `kernel*.img` into `/boot` and reboot.

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