FreeBSD Onion Omega2 & Omega2+ build info
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Onion Omega2+ FreeBSD build

See for reference.

% cat ~/.freebsd-wifi-build-settings.cfg 

% cat ~/omega2/src.conf

get dts files from thread

cd ~/omega2/src/sys/gnu/dts/mips

Edit src/sys/mips/mediatek/std.mediatek and comment out debugging stuff as i had a problem with them enabled:

# Debugging for use in -current
#options         INVARIANTS
#options         INVARIANT_SUPPORT
#options         WITNESS
#options         WITNESS_SKIPSPIN
#options         DEBUG_REDZONE
#options         DEBUG_MEMGUARD

To run build need to specify DTS file so in bash/sh:

X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink buildworld
X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink buildkernel
X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink installworld
X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink installkernel
X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink distribution

For Omega2 owners user X_DTS_FILE=OMEGA2.dts instead.

You should now have a kernel in ../tfpboot

Covert to binary:

objcopy -O binary kernel.MT7628_FDT kernel.MT7628_FDT.kbin


/usr/local/bin/lzma e kernel.MT7628_FDT.kbin kernel.MT7628_FDT.kbin.lzma

Make a u-boot image:

mkimage -A mips -O linux -T kernel -C lzma -a 0x80001100 -e 0x80001100 -n "FreeBSD" -d kernel.MT7628_FDT.kbin.lzma kernel.MT7628_FDT.lzma.uImage

Note: If this does not boot check the address of the kernel entry point with

readelf -h tftpboot/kernel.MT7628_FDT 

Copy to a usb fat formatted usb key:

# mount_msdosfs /dev/da0 /mnt
# cp kernel.MT7628_FDT.lzma.uImage /mnt
# umount /mnt 

Plug into Omega in expansion dock and turn on while holding the reset button with console open.

Press 1 to get into the command line.

You will need to reset the usb:

Omega2 # usb reset

Then load the kernel boot image:

Omega2 # fatload usb 0:1 0x80800000 kernel.MT7628_FDT.lzma.uImage

And boot it:

Omega2 # bootm 0x80800000 

At this point FreeBSD should boot and

Below is what should happen:

   ____       _             ____
  / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _
 / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/
 \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/
 W H A T  W I L L  Y O U  I N V E N T ? /___/"

Board: Onion Omega2 APSoC DRAM:  128 MB
relocate_code Pointer at: 87f60000
flash manufacture id: c2, device id 20 19
find flash: MX25L25635E
*** Warning - bad CRC, using default environment

Onion Omega2 UBoot Version:
ASIC 7628_MP (Port5<->None)
DRAM component: 1024 Mbits DDR, width 16
DRAM bus: 16 bit
Total memory: 128 MBytes
Flash component: SPI Flash
Date:Oct 18 2016  Time:17:29:05
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768
CPU freq = 575 MHZ
Estimated memory size = 128 Mbytes
Resetting MT7628 PHY.
Initializing MT7688 GPIO system.

* Hold Reset button for more options *

You have 40 seconds left to select a menu option...

Please select option:
   [ Enter ]: Boot Omega2.
   [ 0 ]: Start Web recovery mode.
   [ 1 ]: Start command line mode.
   [ 2 ]: Flash firmware from USB storage.

Option [1] selected.

1: System Enter Boot Command Line Interface.

U-Boot 1.1.3 (Oct 18 2016 - 17:29:05)
Omega2 # usb reset
(Re)start USB...
Scanning bus 0 for devices...
New Device 0
value 0x302 index 0x409 length 0xFF
usb_control_msg: status = success?
Product      USB Flash Drive
SerialNumber 070B00012340350
Device is a hub?
2 USB Device(s) found
scan end
       Scanning bus for storage devices...

1: Hub,  USB Revision 1.10
 -  OHCI Root Hub
 - Class: Hub
 - PacketSize: 8  Configurations: 1
 - Vendor: 0x0000  Product 0x0000 Version 0.0

2: Mass Storage,  USB Revision 2.0
 -  USB Flash Drive 070B00012340350
 - Class: (from Interface) Mass Storage
 - PacketSize: 64  Configurations: 1
 - Vendor: 0x1005  Product 0xb113 Version 1.0
Testing BULK mode...Identifying a storage device...*
USB_STORAGE: 1 Storage Device(s) found

Omega2 #  fatload usb 0:1 0x80800000 kernel.MT7628_FDT.lzma.uImage
Reading file "kernel.MT7628_FDT.lzma.uImage"
FAT: 1144975 Bytes read
Omega2 # bootm 0x80800000
## Booting image at 80800000 ...
   Image Name:   FreeBSD
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    1144911 Bytes =  1.1 MB
   Load Address: 80001100
   Entry Point:  80001100
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80001100) ...
## Giving linux memsize in MB, 128

Starting kernel ...

FDT DTB  at: 0x804133c0
CPU   clock:  580MHz
Timer clock:  290MHz
UART  clock:   40MHz

U-Boot args (from 0 args):
entry: mips_init()
RAM size: 128MB (from FDT)
Cache info:
  picache_stride    = 4096
  picache_loopcount = 16
  pdcache_stride    = 4096
  pdcache_loopcount = 8
  max line size     = 32
  cpu0: MIPS Technologies processor v85.150
  MMU: Standard TLB, 32 entries (4K 16K 64K 256K 1M 16M 64M 256M pg sizes)
  L1 i-cache: 4 ways of 512 sets, 32 bytes per line
  L1 d-cache: 4 ways of 256 sets, 32 bytes per line
  L2 cache: disabled
Physical memory chunk(s):
0x47b000 - 0x7ffffff, 129519616 bytes (31621 pages)
Maxmem is 0x8000000
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2017 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 12.0-CURRENT #0 r317887M: Wed May 10 20:49:10 UTC 2017 mips
gcc version 4.2.1 20070831 patched [FreeBSD]
Preloaded elf kernel "kernel" at 0x8046e160.
real memory  = 134217728 (131072K bytes)
Physical memory chunk(s):
0x0050f000 - 0x07d9ffff, 126423040 bytes (30865 pages)
avail memory = 125616128 (119MB)

For mfsroot:

X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink mfsroot
X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT ../freebsd-wifi-build/build/bin/build ralink fsimage

You should now have a populated mfsroot folder.

Copy the content of this to another usb memory stick - or partition the first with msdos for kernel part and ufs for mfsroot.

gpart destroy -F da0
gpart create -s MBR da0
gpart add -t freebsd da0
newfs /dev/da0s1
mount /dev/da0s1 /mnt
cpdup mfsroot/ralink/ /mnt
chown -R root:wheel /mnt
umount /mnt

Follow above instructions to boot from kernel on fat formatted usb memory stick, but before running "bootm 0x80800000" remove the kernel usb key and replace it with the mfs root one. At the mountroot prompt enter the ufs usb key:

mountroot> ufs:/dev/da0s1

And you should see something like the below:

da0: Delete methods: <NONE(*),ZERO>
Mounting from ufs:md0.uzip failed with error 19.

Loader variables:

Manual root filesystem specification:
  <fstype>:<device> [options]
      Mount <device> using filesystem <fstype>
      and with the specified (optional) option list.

    eg. ufs:/dev/da0s1a
        cd9660:/dev/cd0 ro
          (which is equivalent to: mount -t cd9660 -o ro /dev/cd0 /)
  ?               List valid disk boot devices
  .               Yield 1 second (for background tasks)
  <empty line>    Abort manual input

mountroot> ufs:/dev/da0s1
Trying to mount root from ufs:/dev/da0s1 []...
warning: no time-of-day clock registered, system time will not be set accurately
start_init: trying /sbin/init
May 11 22:07:41 init: login_getclass: unknown class 'daemon'
*** Mounting /tmp, /var, /etc ...
random: unblocking device.
*** Copying /c/etc -> /etc ...
*** Starting rc2 ...
*** Populating /var ..
*** Loading configuration files ..
*** Restoring from  ..
dd: no value specified for if
gunzip: (stdin): unexpected end of file
0 blocks
*** Completed.
*** setting up hostname
*** Load kernel modules
  .. bridgestp
kldload: can't load bridgestp: module already loaded or in kernel
  .. if_bridge
kldload: can't load if_bridge: No such file or directory
  .. random
kldload: can't load random: No such file or directory
*** Setting kern.random.harvest.mask=511
kern.random.harvest.mask: 2047 -> 511
*** bringing up loopback ..
*** Default password/login databases ..
*** Customising sysctl ..
*** Starting networking via /etc/rc.d/base/net
*** Interface: rt0: start
*** Interface: rt0: done
*** Interface: bridge0: start
bridge0: bpf attached
bridge0: Ethernet address: 06:a3:b1:0e:30:1d
rt0: entering promiscuous mode
rt0: promiscuous mode enabled
bridge0: link state changed to UP
*** Interface: bridge0: done
ipfw: setsockopt(IP_FW_XDEL): Protocol not available
*** Done!

FreeBSD/mips (freebsd-wifi) (ttyu0)