Annotation of wikisrc/ports/evbarm/raspberry_pi.mdwn, revision 1.47

1.1       jakllsch    1: [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
                      2: 
1.39      wiki        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: 
1.44      wiki        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.
1.39      wiki        6: 
1.3       wiki        7: [[images/raspberrypi.jpg]]
                      8: 
1.26      wiki        9: [[!toc levels=2]]
                     10: 
1.14      wiki       11: <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
1.3       wiki       12: 
1.7       wiki       13: # Installation
1.44      wiki       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,
1.10      wiki       21: 
1.14      wiki       22:           dd if=rpi.img of=/dev/disk1
                     23: 
                     24:  - Using a serial console
1.19      wiki       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)
1.14      wiki       26: 
                     27:           edit cmdline.txt and remove '"console=fb"'
                     28: 
1.47    ! sevan      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".
1.41      wiki       30: 
                     31:       In Kermit, the command is "set flow none".
                     32: 
                     33:       In minicom, run "minicom -s" and set hardware flow control to "no"
                     34: 
1.44      wiki       35:  - Growing the root file-system (**not required with NetBSD -current after 2015-04-07, or by NetBSD 7 after 2015-08-06**)
1.17      wiki       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.
1.10      wiki       40:    - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
1.15      wiki       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.
1.20      wiki       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).
1.10      wiki       44:    - At the # prompt, type
                     45: 
                     46:         "disklabel -i ld0" and press return.
1.19      wiki       47: 
1.15      wiki       48:    - At the partition> prompt type "A" and press return.
1.10      wiki       49: 
                     50:            Adjust disklabel sector from 4194304 to 62333952 [n]?
                     51:            Type "y" and press return.
1.19      wiki       52: 
1.15      wiki       53:    - partition> prompt type "a" and press return.
1.12      wiki       54: 
1.11      wiki       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.
1.19      wiki       59: 
1.15      wiki       60:    - partition> prompt type "W" to save the changes to the disklabel.
1.11      wiki       61: 
                     62:            Confirm this choice by typing "y" at the Label disk prompt.
1.12      wiki       63:            Type "Q" and press return to quit disklabel.
1.19      wiki       64: 
1.15      wiki       65:    - At the # prompt (shell), type
1.11      wiki       66: 
                     67:            fsck -fy /dev/rld0a
                     68:            resize_ffs -y /dev/rld0a
1.19      wiki       69: 
1.11      wiki       70:    - This may take a few minutes, be patient!
                     71: 
                     72:            fsck -fy /dev/rld0a
1.18      wiki       73:            mount_msdos /dev/ld0e /boot
1.11      wiki       74:            mv /boot/cmdline.txt.orig /boot/cmdline.txt
                     75:            reboot
1.19      wiki       76: 
1.11      wiki       77:     - When the system comes back up, the root file-system will have been expanded to
1.10      wiki       78:           fill the SD card.
1.7       wiki       79: 
1.16      wiki       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.
1.19      wiki       83:  - After starting DHCP client, SSH login to with user "sysinst", and password "netbsd".
1.17      wiki       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!
1.16      wiki       87: 
1.7       wiki       88: # Updating the firmware
1.45      schmonz    89: 
                     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.
                     93: 
                     94: If you're feeling adventurous (or are the port maintainer), here's what
                     95: to test whenever you try new firmware:
                     96: 
                     97: - Audio
                     98: - OMXPlayer (and [[!template id=man name="vchiq"]])
                     99: - Serial/framebuffer console
                    100: - CPU frequency scaling
                    101: 
1.46      schmonz   102: That goes for all of `rpi[0123]`.
                    103: 
1.45      schmonz   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.
1.7       wiki      107: 
1.42      wiki      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.
                    110: 
                    111:          ...
                    112:          Kernels built from RPI2:
                    113:           /Users/feyrer/work/NetBSD/cvs/src-current/obj.evbarm-Darwin-XXX/sys/arch/evbarm/compile/RPI2/netbsd
                    114:          ...
                    115: 
1.47    ! sevan     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.
1.42      wiki      117:  - Depending on your hardware version, copy this either to /boot/kernel.img (old/V1 hardware) or to /boot/kernel7.img (new/V2 hardware)
                    118:  - reboot
                    119: 
1.24      wiki      120: # Wireless Networking
                    121:  - A Realtek 802.11n USB adaptor configures as urtwn(4).
1.25      wiki      122:    - Configure with wpa_supplicant in /etc/rc.conf -
1.24      wiki      123: 
                    124:            ifconfig_urtwn0=dhcp
                    125:            dhcpcd=YES
                    126:            dhcpcd_flags="-q -b"
                    127:            wpa_supplicant=YES
                    128:            wpa_supplicant_flags="-B -i urtwn0 -c /etc/wpa_supplicant.conf"
1.25      wiki      129:    - A sample wpa_supplicant.conf can be found at /usr/share/examples/wpa_supplicant/wpa_supplicant.conf
1.24      wiki      130: 
1.27      wiki      131: # GPU
                    132: 
                    133: ## Video playback
1.29      wiki      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.
1.27      wiki      135: 
                    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.
                    138: 
1.28      wiki      139: ## Quake 3
1.27      wiki      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:
                    141: 
                    142:  - pak0.pk3 from Quake 3 CD
1.31      snj       143:  - additional pak files from the [games/ioquake3-pk3](http://pkgsrc.se/games/ioquake3-pk3) package
1.27      wiki      144:  - read/write permissions on /dev/vchiq and /dev/wsmouse
                    145: 
1.31      snj       146: Place the pak0.pk3 file in the /usr/pkg/lib/ioquake3/baseq3 directory.
1.27      wiki      147: 
1.32      wiki      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:
                    150: 
                    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="""
1.35      wiki      156: $ retroarch-joyconfig -o gamepad.cfg
1.32      wiki      157: """]]
                    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
                    161: """]]
                    162: 
1.30      wiki      163: # What works (NetBSD 7.0+)
1.6       wiki      164:  - multi-user boot with root on SD card
                    165:  - serial or graphics console (with EDID query / parsing)
1.23      skrll     166:  - DMA controller driver and sdhc(4) support
                    167:  - Audio: works. man page missing.
1.21      skrll     168:  - I²C: works, could use enhancements, man page
                    169:  - GPIO
                    170:  - RNG
                    171:  - SPI: could use enhancements, man page
1.29      wiki      172:  - GPU (VCHIQ) - 3D and video decode. man page missing.
1.19      wiki      173:  - USB (host) - dwctwo(4)
                    174:  - USB Ethernet - usmsc(4)
1.21      skrll     175:  - X windows.
1.43      wiki      176:  - RaspberryPi 2 SMP
1.1       jakllsch  177: 
                    178: # What needs work
1.19      wiki      179:  - USB (host); isochronous transfers.

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