Diff for /wikisrc/ports/evbarm/raspberry_pi.mdwn between versions 1.1 and 1.12

version 1.1, 2013/01/01 05:34:36 version 1.12, 2013/03/23 14:29:34
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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.
      - partition> prompt
   
              type "a" and press return.
              Filesystem type prompt, press return to use the current value (4.2BSD).
              Start offset prompt, press return to use the current value.
              Partition size prompt, type "$" and press return to grow the
              partition to use all available free space.
   
      - 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
              resize_ffs -y /dev/rld0a
      - This may take a few minutes, be patient!
   
              fsck -fy /dev/rld0a
              mount /dev/ld0e /boot
              mv /boot/cmdline.txt.orig /boot/cmdline.txt
              reboot
       - 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.1.12


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