File:  [NetBSD Developer Wiki] / wikisrc / ports / evbarm / raspberry_pi.mdwn
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    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: (Raspberry Pi [image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)
    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:      - <i>gunzip and dd</i> this img to your sd card.
   13: 
   14:  - Growing the root file-system
   15:    - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
   16:    - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text.
   17:    - Reboot, and at the prompt to enter the passname of shell, press
   18: 	   return for the default (/bin/sh).
   19:    - At the # prompt, type
   20: 
   21:         "disklabel -i ld0" and press return.
   22:    - At the partition> prompt, type "A" and press return. You will see
   23:      a message like:
   24: 
   25:            Adjust disklabel sector from 4194304 to 62333952 [n]?
   26:            Type "y" and press return.
   27:    - At the partition> prompt, type "a" and press return.
   28:    - At the Filesystem type prompt, press return to use the current value (4.2BSD).
   29:    - At the Start offset prompt, press return to use the current value.
   30:    - At the Partition size prompt, type "$" and press return to grow the
   31: 	   partition to use all available free space.
   32:    - At the partition> prompt, type "W" to save the changes to the
   33: 	   disklabel. Confirm this choice by typing "y" at the Label disk
   34: 	   prompt.
   35:    - Type "Q" and press return to quit disklabel.
   36:    - At the # prompt, type "fsck -fy /dev/rld0a" and press return.
   37:    - At the # prompt, type "resize_ffs -y /dev/rld0a" and press return.
   38: 	   This may take a few minutes, be patient!
   39:    - At the # prompt, type "fsck -fy /dev/rld0a" and press return.
   40:    - At the # prompt, type "mount /dev/ld0e /boot" and press return.
   41:    - At the # prompt, type "mv /boot/cmdline.txt.orig /boot/cmdline.txt"
   42: 	   and press return.
   43:    - At the # prompt, type "reboot" and press return. When the system
   44: 	   comes back up, the root file-system will have been expanded to
   45: 	   fill the SD card.
   46: 
   47: # Updating the firmware
   48:  - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)
   49:    - Copy all files except 'kernel*img' into /boot and reboot
   50: 
   51: # Additional links
   52:  - [ARM userland utilities](https://github.com/jaredmcneill/userland)
   53:  - [Additional kernel drivers for VCHIQ](https://github.com/jaredmcneill/vchiq-netbsd)
   54: 
   55: # What works
   56:  - multi-user boot with root on SD card
   57:  - serial or graphics console (with EDID query / parsing)
   58:  - X windows.
   59:  - USB (host); control, interrupt and bulk transfers. Has some stability issues that are being worked on. man page missing.
   60:  - USB Ethernet
   61:  - RNG: works
   62:  - I²C: works, could use enhancements, man page
   63:  - SPI: works, could use enhancements, man page
   64: 
   65: # What needs work
   66:  - VCHIQ; work in progress - will provide audio.
   67:  - USB (host); isochronous transfers. DMA support.
   68:  - DMA controller driver / dmover(9) backend
   69:  - Teach sdhc(4) about dmover; not Raspberry Pi specific
   70:  - hardfloat; not Raspberry Pi specific
   71:  - earm ABI; not Raspberry Pi specific
   72:  - GPIO

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