SiFive HiFive P550 Premier

This is the first generally available board for EIC7700X. The board is available from SiFive and released at $600 USD.

Hardware notes

The board is using the DTX form factor, which is between the Mini-ITX and Micro-ATX form factor. Some ITX cases will work, but for best compatibility, a Micro-ATX case is your best bet.

For power, you should use the ATX connector and not the barrel conector (which is only used for debugging).

There are three Ethernet interfaces: two are for the EIC7700X Gigabit interfaces, and one is for the BMC.

BMC

On release, the BMC is very restrictive and barebones. It only supports HTTP and not HTTPS for access, and only supports plain text authentication. It also seems to have a few issues around session cookies. For best security and compatibility, avoiding the Ethernet interface is advisable.

There is also a USB-C connector on the board which attaches to an FTDI FT4232-HS USB device which exposes four interfaces:

/dev/serial/by-id/usb-FTDI_Quad_RS232-HS-if00-port0 <- JTAG for EIC7700X
/dev/serial/by-id/usb-FTDI_Quad_RS232-HS-if01-port0 <- Serial Console for EIC7700X @ 115200bps, No Parity, 8 data bits, 1 stop bit (speed configurable by OS)
/dev/serial/by-id/usb-FTDI_Quad_RS232-HS-if02-port0 <- JTAG for BMC
/dev/serial/by-id/usb-FTDI_Quad_RS232-HS-if03-port0 <- BMC Serial Interface @ 115200bps, No Parity, 8 data bits, 1 stop bit

The BMC serial interface has a simple CLI and supports a “help” command:

#cmd: help                                                             
                                                                                                                                              
help:                                                                  
 Lists all the registered commands                                     
                                                                                                                                              
stats: Displays a table with the state of each FreeRTOS task.
                                                                       
cbinfo-g: Display carrierboard information.
                                                                       
cbinfo-s <magic/format/productid/pcbr/bomr/bomv/boardsn/manu> <value in hex>: Set magicNumber...
                                   
sominfo: Display somboard information.

account-g: Show account name and password.                                                                                   

account-s <name> <password>: Set account name and password.

ifconfig: Display network configuration.

setip <ipaddr>: Set ip address.

setmask <ipaddr>: Set netmask address.

setgateway <ipaddr>: Set gateway address.

setmac <index,0-2> <mac,like a1:26:39:91:b0:22>: Set mac address.

bootsel-g: Show software bootsel configuration.

bootsel-s <hw/sw> <bootsel(hex), like, F>: Set software bootsel configuration.

date: Get the current date and time.

date-s <Year> <Month> <Date> <WeekDay 1-7>: Set a new date.

time-s <Hours> <Minutes> <Seconds>: Set a new time.

temp: Get the temperature and fan speed.

pd: Get the power dissipation

sompower-g: Get the som power status. ON or OFF.

sompower-s <1/0>: Power (1)ON or (0)OFF.

somwork: Get the kernel work status of the som board.

reboot <cold/warm>: cold or warm reboot the kernel on som board.

devmem-r <address in hex>: Read the memory/io address of som board.

devmem-w <address in hex,like 0x180000000> <value in hex,like 0xabcd1234>: write the memory/io address of som board.

powerlost-g: Get the som power lost attr. Enable or Disable.

powerlost-s <1/0>: (1)Enable or (0)Disable.

pwrlast-g: Get the som power last state. 1 or 0.

somconsole-g: Get the som console configuration. UART or Telnet

somconsole-s: Set the som console configuration. 0(via UART), 1(via Telnet).

echo <string to echo>

heap: Display free heap memory.

version: Get BMC version