[[!meta title="NetBSD/evbarm on BeagleBone"]]

[[images/beaglebone.jpg]]

This page attempts to document and coordinate efforts towards NetBSD on [BeagleBone](http://beagleboard.org/bone).

(BeagleBone [image](http://www.flickr.com/photos/sparkfun/8267577194/) by SparkFun Electronics used under CC-By-2.0 license)

# What works
 - Boots multi-user on [[!template id=man name="ld" section="4"]] @ [[!template id=man name="sdmmc" section="4"]] root and [[!template id=man name="com" section="4"]] console.
 - Ethernet ([[!template id=man name="cpsw" section="4" arch="evbarm"]])

# What needs work
 - EDMA3 (perhaps at first for [[!template id=man name="sdhc" section="4"]])
 - USB (host)
 - SPI
 - I²C
 - GPIO
 - Framebuffer/graphics with LCD or DVI/HDMI capes
 - Touchscreens on LCD capes
 - USB (device)

# Sample dmesg
[[!template id=filecontent name="dmesg" text="""
NetBSD 6.99.16 (BEAGLEBONE)
total memory = 256 MB
avail memory = 247 MB
timecounter: Timecounters tick every 10.000 msec
cprng kernel: WARNING insufficient entropy at creation.
mainbus0 (root)
cpu0 at mainbus0 core 0: 720 MHz Cortex-A8 r3p2 (Cortex core)
cpu0: DC enabled IC enabled WB disabled EABT branch prediction enabled
cpu0: isar: [0]=0x101111 [1]=0x13112111 [2]=0x21232031 [3]=0x11112131, [4]=0x11142, [5]=0
cpu0: mmfr: [0]=0x1100003 [1]=0x20000000 [2]=0x1202000 [3]=0x211
cpu0: pfr: [0]=0x1131 [1]=0x11
cpu0: 32KB/64B 4-way L1 Instruction cache
cpu0: 32KB/64B 4-way write-back-locking-C L1 Data cache
cpu0: 256KB/64B 8-way write-through L2 Unified cache
vfp0 at cpu0: NEON MPE (VFP 3.0+)
obio0 at mainbus0 base 0x44000000-0x4fffffff: On-Board IO
omapicu0 at obio0 addr 0x48200000-0x48200fff intrbase 0
prcm0 at obio0 addr 0x44e00000-0x44e01fff: Power, Reset and Clock Management
gpmc0 at mainbus0 base 0x50000000-0x50ffffff: General Purpose Memory Controller, rev 6.0
gpmc0: CS#0 valid, addr 0x08000000, size 256MB
com0 at obio0 addr 0x44e09000-0x44e09fff intr 72: ns16550a, working fifo
com0: console
sdhc0 at obio0 addr 0x48060100-0x48060fff intr 64: SDHC controller
sdhc0: SD Host Specification 2.0, rev.49
sdmmc0 at sdhc0 slot 0
omapdmtimer0 at obio0 addr 0x48040000-0x48040fff intr 68: DMTIMER2
omapdmtimer1 at obio0 addr 0x44e31000-0x44e31fff intr 67: DMTIMER1ms
omapdmtimer2 at obio0 addr 0x48044000-0x48044fff intr 92: DMTIMER4
omapwdt32k0 at obio0 addr 0x44e35000-0x44e35fff: rev 0.1
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
timecounter: Timecounter "dmtimer" frequency 24000000 Hz quality 100
ld0 at sdmmc0: <0x28:0x4245:31676:0x10::0x0a7>
ld0: 490 MB, 995 cyl, 16 head, 63 sec, 512 bytes/sect x 1003520 sectors
ld0: 4-bit width, bus clock 50.000 MHz
cprng sysctl: WARNING insufficient entropy at creation.
boot device: <unknown>
root on ld0f dumps on ld0b
WARNING: no TOD clock present
WARNING: using filesystem time
WARNING: CHECK AND RESET THE DATE!
init: copying out path `/sbin/init' 11
"""]]


 - Growing the root file-system
   - During the partitioning process, do not delete or format the
     first MSDOS (FAT) partition, as the Raspberry pi firmware is
     hard coded to boot on the SDCAD / 1st MSDOS partition / Firmware
     updates and boot loader.
   - 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 to boot into single-user mode.
   - 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.

           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 (shell), type

           fsck -fy /dev/rld0a
           resize_ffs -y /dev/rld0a
   - This may take a few minutes, be patient!

           fsck -fy /dev/rld0a
           mount_msdos /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.