File:  [NetBSD Developer Wiki] / wikisrc / ports / evbarm / raspberry_pi.mdwn
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Sat Apr 20 16:09:24 2013 UTC (8 years, 5 months ago) by wiki
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web commit by mspo: a little cleanup

    1: [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
    2: 
    3: [[images/raspberrypi.jpg]]
    4: 
    5: This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org).
    6: 
    7: <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
    8: 
    9: # Installation
   10:  - You may use the rpi.img file created by an arm build.
   11:    - An example can be found in the '/evbarm/binary/gzimg/' directory under releng.netbsd.org
   12:    - 'obj/releasedir/evbarm/binary/gzimg/' if you run (for example) './build.sh -m evbarm -u release'
   13:      - <i>gunzip and dd</i> this img to your sd card.
   14: 
   15: 	   dd if=rpi.img of=/dev/disk1
   16: 
   17:  - Using a serial console
   18:    - By default the rpi.img is set to use the HDMI output; to change mount rpi.img (it's a FAT filesystem)
   19: 
   20: 	   edit cmdline.txt and remove '"console=fb"'
   21:    - proceed with the 'dd'
   22: 
   23:  - Growing the root file-system
   24:    - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
   25:    - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text to boot into single-user mode.
   26:    - Reboot, and at the prompt to enter the passname of shell, press
   27: 	   return for the default (/bin/sh).
   28:    - At the # prompt, type
   29: 
   30:         "disklabel -i ld0" and press return.
   31:    - At the partition> prompt type "A" and press return.
   32: 
   33:            Adjust disklabel sector from 4194304 to 62333952 [n]?
   34:            Type "y" and press return.
   35:    - partition> prompt type "a" and press return.
   36: 
   37:            Filesystem type prompt, press return to use the current value (4.2BSD).
   38:            Start offset prompt, press return to use the current value.
   39:            Partition size prompt, type "$" and press return to grow the
   40:            partition to use all available free space.
   41:    - partition> prompt type "W" to save the changes to the disklabel.
   42: 
   43:            Confirm this choice by typing "y" at the Label disk prompt.
   44:            Type "Q" and press return to quit disklabel.
   45:    - At the # prompt (shell), type
   46: 
   47:            fsck -fy /dev/rld0a
   48:            resize_ffs -y /dev/rld0a
   49:    - This may take a few minutes, be patient!
   50: 
   51:            fsck -fy /dev/rld0a
   52:            mount /dev/ld0e /boot
   53:            mv /boot/cmdline.txt.orig /boot/cmdline.txt
   54:            reboot
   55:     - When the system comes back up, the root file-system will have been expanded to
   56: 	   fill the SD card.
   57: 
   58: # Updating the firmware
   59:  - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)
   60:    - Copy all files except 'kernel*img' into /boot and reboot
   61: 
   62: # Additional links
   63:  - [ARM userland utilities](https://github.com/jaredmcneill/userland)
   64: 
   65: # What works
   66:  - multi-user boot with root on SD card
   67:  - serial or graphics console (with EDID query / parsing)
   68:  - X windows.
   69:  - USB (host); control, interrupt and bulk transfers. Has some stability issues that are being worked on. man page missing.
   70:  - USB Ethernet
   71:  - RNG: works
   72:  - I²C: works, could use enhancements, man page
   73:  - SPI: works, could use enhancements, man page
   74:  - VCHIQ: work in progress. man page missing. (-current)
   75:  - Audio: works. man page missing. (-current)
   76: 
   77: # What needs work
   78:  - USB (host); isochronous transfers. DMA support.
   79:  - DMA controller driver / dmover(9) backend
   80:  - Teach sdhc(4) about dmover; not Raspberry Pi specific
   81:  - hardfloat; not Raspberry Pi specific
   82:  - earm ABI; not Raspberry Pi specific
   83:  - GPIO

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