Diff for /wikisrc/ports/evbarm/raspberry_pi.mdwn between versions 1.1 and 1.10

version 1.1, 2013/01/01 05:34:36 version 1.10, 2013/03/23 13:37:48
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 [[!meta title="NetBSD/evbarm on Raspberry Pi"]]  [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
   
   [[images/raspberrypi.jpg]]
   
 This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org).  This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org).
   
   (Raspberry Pi [image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)
   
   # Installation
    - You may use the rpi.img file created by an arm build.
      - An example can be found in the '/evbarm/binary/gzimg/' directory under releng.netbsd.org
        - <i>gunzip and dd</i> this img to your sd card.
   
    - Growing the root file-system
      - 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.
      - Reboot, and at the prompt to enter the passname of shell, press
              return for the default (/bin/sh).
      - At the # prompt, type
   
           "disklabel -i ld0" and press return.
      - At the partition> prompt, type "A" and press return. You will see
        a message like:
   
              Adjust disklabel sector from 4194304 to 62333952 [n]?
              Type "y" and press return.
      - At the partition> prompt, type "a" and press return.
      - At the Filesystem type prompt, press return to use the current value (4.2BSD).
      - At the Start offset prompt, press return to use the current value.
      - At the Partition size prompt, type "$" and press return to grow the
              partition to use all available free space.
      - At the partition> prompt, type "W" to save the changes to the
              disklabel. Confirm this choice by typing "y" at the Label disk
              prompt.
      - Type "Q" and press return to quit disklabel.
      - At the # prompt, type "fsck -fy /dev/rld0a" and press return.
      - At the # prompt, type "resize_ffs -y /dev/rld0a" and press return.
              This may take a few minutes, be patient!
      - At the # prompt, type "fsck -fy /dev/rld0a" and press return.
      - At the # prompt, type "mount /dev/ld0e /boot" and press return.
      - At the # prompt, type "mv /boot/cmdline.txt.orig /boot/cmdline.txt"
              and press return.
      - At the # prompt, type "reboot" and press return. When the system
              comes back up, the root file-system will have been expanded to
              fill the SD card.
   
   # Updating the firmware
    - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)
      - Copy all files except 'kernel*img' into /boot and reboot
   
   # Additional links
    - [ARM userland utilities](https://github.com/jaredmcneill/userland)
    - [Additional kernel drivers for VCHIQ](https://github.com/jaredmcneill/vchiq-netbsd)
   
 # What works  # What works
  - multi-user boot with root on SD card and serial console   - multi-user boot with root on SD card
    - serial or graphics console (with EDID query / parsing)
    - X windows.
    - USB (host); control, interrupt and bulk transfers. Has some stability issues that are being worked on. man page missing.
    - USB Ethernet
    - RNG: works
    - I²C: works, could use enhancements, man page
    - SPI: works, could use enhancements, man page
   
 # What needs work  # What needs work
  - USB (host): work in progress   - VCHIQ; work in progress - will provide audio.
  - I²C: work in progress   - USB (host); isochronous transfers. DMA support.
  - SPI: work in progress   - DMA controller driver / dmover(9) backend
    - Teach sdhc(4) about dmover; not Raspberry Pi specific
    - hardfloat; not Raspberry Pi specific
    - earm ABI; not Raspberry Pi specific
  - GPIO   - GPIO
  - framebuffer  
  - almost everything relating to working with the VideoCore IV  

Removed from v.1.1  
changed lines
  Added in v.1.10


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