Diff for /wikisrc/ports/evbarm/raspberry_pi.mdwn between versions 1.18 and 1.40

version 1.18, 2013/07/30 05:25:37 version 1.40, 2015/04/07 10:10:04
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 [[!meta title="NetBSD/evbarm on Raspberry Pi"]]  [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
   
   This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org). All board variants are supported.
   
   Initial 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.
   
 [[images/raspberrypi.jpg]]  [[images/raspberrypi.jpg]]
   
 This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org).  [[!toc levels=2]]
   
 <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>  <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
   
 # Installation  # Installation
  - Use the latest HEAD/-current which builds for install   - You may use the rpi.img file created by an evbarm build - evbarm-earmv6hf is recommended. This isn't optimized for Raspberry Pi 2, but allows a single image to be used for all boards.
    - As the raspberry pi port is still not part the stable release, you will want to use the     - The Raspberry Pi and Pi 2 ports will be part of the NetBSD 7 release.
      HEAD branch to download installation sets.     - The automatic nightly builds can be found in the 'evbarm-earmv6hf/binary/gzimg/' directory on [nyftp.netbsd.org](http://nyftp.netbsd.org/pub/NetBSD-daily/).
    - You may use the rpi.img file created by an arm build.       - The stable build will be under netbsd-7/YYYYMMDDHHMMZ/evbarm-earmv6hf/binary/gzimg/
    - An example can be found in the '/evbarm/binary/gzimg/' directory under releng.netbsd.org       - The HEAD/current build will be under HEAD/YYYYMMDDHHMMZ/evbarm-earmv6hf/binary/gzimg/
      - On nyftp.netbsd.org/pub/NetBSD-daily/HEAD/YYYYMMDDHHMMZ (it will look like pub/NetBSD-daily/HEAD/201305220150Z)       - For example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201412161700Z/evbarm-earmv6hf/binary/gzimg/
    - 'obj/releasedir/evbarm/binary/gzimg/' if you run (for example) './build.sh -m evbarm -u release'     - 'releasedir/evbarm/binary/gzimg/' if you run (for example) './build.sh -m evbarm -a earmv6hf -u release'
      - <i>gunzip and dd</i> this img to your sd card.     - <i>gunzip and dd</i> this img to your sd card.
   
            dd if=rpi.img of=/dev/disk1             dd if=rpi.img of=/dev/disk1
   
  - Using a serial console   - Using a serial console
    - By default the rpi.img is set to use the HDMI output; to change mount rpi.img (it's a FAT filesystem)     - 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)
   
            edit cmdline.txt and remove '"console=fb"'             edit cmdline.txt and remove '"console=fb"'
    - proceed with the 'dd'  
   
  - Growing the root file-system   - Growing the root file-system (**not required with NetBSD -current after 2015-04-07**)
    - During the partitioning process, do not delete or format the     - During the partitioning process, do not delete or format the
      first MSDOS (FAT) partition, as the Raspberry pi firmware is       first MSDOS (FAT) partition, as the Raspberry pi firmware is
      hard coded to boot on the SDCAD / 1st MSDOS partition / Firmware       hard coded to boot on the SDCAD / 1st MSDOS partition / Firmware
      updates and boot loader.       updates and boot loader.
    - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig     - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
    - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text to boot into single-user mode.     - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text to boot into single-user mode.
    - Reboot, and at the prompt to enter the passname of shell, press     - For the next steps, the root filesystem mustn't be mounted rw. So reboot, and at the prompt to enter the pathname of shell,
            return for the default (/bin/sh).       press return for the default (/bin/sh).
    - At the # prompt, type     - At the # prompt, type
   
         "disklabel -i ld0" and press return.          "disklabel -i ld0" and press return.
   
    - At the partition> prompt type "A" and press return.     - At the partition> prompt type "A" and press return.
   
            Adjust disklabel sector from 4194304 to 62333952 [n]?             Adjust disklabel sector from 4194304 to 62333952 [n]?
            Type "y" and press return.             Type "y" and press return.
   
    - partition> prompt type "a" and press return.     - partition> prompt type "a" and press return.
   
            Filesystem type prompt, press return to use the current value (4.2BSD).             Filesystem type prompt, press return to use the current value (4.2BSD).
            Start offset prompt, press return to use the current value.             Start offset prompt, press return to use the current value.
            Partition size prompt, type "$" and press return to grow the             Partition size prompt, type "$" and press return to grow the
            partition to use all available free space.             partition to use all available free space.
   
    - partition> prompt type "W" to save the changes to the disklabel.     - partition> prompt type "W" to save the changes to the disklabel.
   
            Confirm this choice by typing "y" at the Label disk prompt.             Confirm this choice by typing "y" at the Label disk prompt.
            Type "Q" and press return to quit disklabel.             Type "Q" and press return to quit disklabel.
   
    - At the # prompt (shell), type     - At the # prompt (shell), type
   
            fsck -fy /dev/rld0a             fsck -fy /dev/rld0a
            resize_ffs -y /dev/rld0a             resize_ffs -y /dev/rld0a
   
    - This may take a few minutes, be patient!     - This may take a few minutes, be patient!
   
            fsck -fy /dev/rld0a             fsck -fy /dev/rld0a
            mount_msdos /dev/ld0e /boot             mount_msdos /dev/ld0e /boot
            mv /boot/cmdline.txt.orig /boot/cmdline.txt             mv /boot/cmdline.txt.orig /boot/cmdline.txt
            reboot             reboot
   
     - When the system comes back up, the root file-system will have been expanded to      - When the system comes back up, the root file-system will have been expanded to
            fill the SD card.             fill the SD card.
   
 # Installation with sshramdisk image  # Installation with sshramdisk image
  - You may use the  rpi_inst.img.gz file created by an evbarm build.   - You may use the  rpi_inst.img.gz file created by an evbarm build.
  - Connect Ethernet Cable to RPI.   - Connect Ethernet Cable to RPI.
  - After starting DHCP client,SSH login to RPI with user "sysinst",passwd "netbsd".   - After starting DHCP client, SSH login to with user "sysinst", and password "netbsd".
    - Be careful to note the ip address given during DHCP so you don't lose your connection     - Be careful to note the ip address given during DHCP so you don't lose your connection
    - Also for after the sysinst is done and the system reboots     - Also for after the sysinst is done and the system reboots
  - sysinst started!   - sysinst started!
   
 # Updating the firmware  # Updating the firmware
  - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)   - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)
    - Copy all files except 'kernel*img' into /boot and reboot     - Copy all files except 'kernel*.img' into /boot and reboot
   
 # Additional links  # Wireless Networking
  - [ARM userland utilities](https://github.com/jaredmcneill/userland)   - A Realtek 802.11n USB adaptor configures as urtwn(4).
      - Configure with wpa_supplicant in /etc/rc.conf -
   
              ifconfig_urtwn0=dhcp
              dhcpcd=YES
              dhcpcd_flags="-q -b"
              wpa_supplicant=YES
              wpa_supplicant_flags="-B -i urtwn0 -c /etc/wpa_supplicant.conf"
      - A sample wpa_supplicant.conf can be found at /usr/share/examples/wpa_supplicant/wpa_supplicant.conf
   
   # GPU
   
   ## Video playback
   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.
   
   ## OpenGL ES
   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.
   
   ## Quake 3
   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:
   
    - pak0.pk3 from Quake 3 CD
    - additional pak files from the [games/ioquake3-pk3](http://pkgsrc.se/games/ioquake3-pk3) package
    - read/write permissions on /dev/vchiq and /dev/wsmouse
   
   Place the pak0.pk3 file in the /usr/pkg/lib/ioquake3/baseq3 directory.
   
   ## RetroArch / Libretro
   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:
   
    - Install [emulators/retroarch](http://pkgsrc.se/emulators/retroarch)
    - 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).
    - Plug in a USB HID compatible Gamepad, such as the Logitech F710 in "DirectInput" mode (set "D/X" switch to "D").
    - Create a config file for your gamepad using *retroarch-joyconfig*.
   [[!template  id=programlisting text="""
   $ retroarch-joyconfig -o gamepad.cfg
   """]]
    - Launch the emulator from the command-line (no X required):
   [[!template  id=programlisting text="""
   $ retroarch --appendconfig gamepad.cfg -L /usr/pkg/lib/libretro/gambatte_libretro.so game.gbc
   """]]
   
 # What works  # What works (NetBSD 7.0+)
  - multi-user boot with root on SD card   - multi-user boot with root on SD card
  - serial or graphics console (with EDID query / parsing)   - serial or graphics console (with EDID query / parsing)
  - X windows.   - DMA controller driver and sdhc(4) support
  - USB (host); control, interrupt and bulk transfers. Has some stability issues that are being worked on. man page missing.   - Audio: works. man page missing.
  - USB Ethernet  
  - RNG: works  
  - I²C: works, could use enhancements, man page   - I²C: works, could use enhancements, man page
  - SPI: works, could use enhancements, man page   - GPIO
  - VCHIQ: work in progress. man page missing. (-current)   - RNG
  - Audio: works. man page missing. (-current)   - SPI: could use enhancements, man page
    - GPU (VCHIQ) - 3D and video decode. man page missing.
    - USB (host) - dwctwo(4)
    - USB Ethernet - usmsc(4)
    - X windows.
   
 # What needs work  # What needs work
  - USB (host); isochronous transfers. DMA support.   - USB (host); isochronous transfers.
  - DMA controller driver / dmover(9) backend   - MULTIPROCESSOR support for Raspberry Pi 2
  - Teach sdhc(4) about dmover; not Raspberry Pi specific  
  - hardfloat; not Raspberry Pi specific  
  - earm ABI; not Raspberry Pi specific  
  - GPIO  

Removed from v.1.18  
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  Added in v.1.40


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