New Allen Telescope Array Development

Jack Hickish gave me a Roach2 to try to test.

• Jack says this is the image to use: acme1:/srv/tftpboot/uboot-roach2/uImage-r2borph3
• https://casper.berkeley.edu/wiki/ROACH_NFS_guide
• https://casper.berkeley.edu/wiki/Getting_Started_with_ROACH2
• https://casper.berkeley.edu/wiki/ROACH-2_Revision_2
• https://github.com/F5OEO/rpidatv

I pluged in USB to the port labeled “FTDI USB”. On my MAC “screen /dev/tty.usbserial-FA1302 115200” started the terminal session.

U-Boot 2011.06-rc2-00000-gd422dc0-dirty (Nov 08 2012 - 16:04:14)

CPU:   AMCC PowerPC 440EPx Rev. A at 533.333 MHz (PLB=133 OPB=66 EBC=66)
     No Security/Kasumi support
     Bootstrap Option C - Boot ROM Location EBC (16 bits)
     32 kB I-Cache 32 kB D-Cache
Board: ROACH2
I2C:   ready
DRAM:  512 MiB
Flash: 128 MiB
In:    serial
Out:   serial
Err:   serial
CPLD:  2.1
USB:   Host(int phy)
SN:    ROACH2.2 batch=D#6#53 software fixups match
MAC:   02:44:01:02:06:35
DTT:   1 is 26 C
DTT:   2 is 24 C
Net:   ppc_4xx_eth0

So, I need to set up TFTP to get this to boot an OS.

The Roach2 requires network boot and a TFTP server on that server. I set up the sonata1 server (10.1.49.80, sonata, polaris).

apt-get install dnsmasq

Then edited the /etc/dnsmasq.conf file wit these values:

# Assign the ROACH an IP address manually, based on its MAC
dhcp-host=02:44:01:02:06:35,10.1.49.171

# Have a DHCP address range for other things
dhcp-range=10.1.49.0,static

# Set the location of the ROACH's root filesystem on the NFS server.
#dhcp-option=17,10.1.49.80:/srv/boot_roach2/etch
dhcp-option=17,10.1.49.80:/srv/boot_roach2/squeeze_root.ppc

# Set the boot filename for BOOTP, which is what the ROACH boots over
dhcp-boot=uImage-r2borph3

# Enable dnsmasq's built-in TFTP server. Required for BOOTP.
enable-tftp

# Set the root directory for files availble via FTP.
tftp-root=/srv/boot_roach2/boot

# Set the DHCP server to authoritative mode (then keep away from other networks!)
dhcp-authoritative

#Specify which ethernet interface you use to connect to the ROACH (eth0, eth1, eth2 ...)
interface=eth0

#May be useful if you have several ethernet interfaces
bind-interfaces

log-queries
log-facility=/var/log/dnsmasq.log

server=8.8.8.8
server=8.8.4.4
dhcp-option=option:ntp-server,198.137.202.56,198.137.202.56,74.120.81.219,97.127.86.125

Then to restart dnsmasq:

sudo /etc/init.d/dnsmasq restart

mount -o remount,rw /

Also had to install NTP, as the instructions at https://casper.berkeley.edu/wiki/ROACH_NFS_guide

Here is the basic hardware description: https://casper.berkeley.edu/wiki/ADC2x1000-8

I was able pr procure a $35 ADF4351_PLL board, from China, and control it with my Raspberry Pi. Here is a picture of the board tuned to 2GHz. This will be used for the clock input of the ADC board. This requires a 10MHz reference signal.

The controller program is at https://github.com/F5OEO/rpidatv, called adf4351 To tune it to 2GHz: “./adf4351 2000.0 10000000”