current_hw_cfgmem - 2023.1 English

Vivado Design Suite Tcl Command Reference Guide (UG835)

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2023.1 English

Get or set the current hardware cfgmem


current_hw_cfgmem [‑hw_device <args>] [‑quiet] [‑verbose] [<hw_cfgmem>]


Hardware cfgmem


Name Description
[-hw_device] list of hardware devices
[-quiet] Ignore command errors
[-verbose] Suspend message limits during command execution
[<hw_cfgmem>] list of hardware cfgmems Default: current hardware cfgmem




Set or return the current hardware cfgmem object.

The process whereby the design specific data is loaded or programmed into the Xilinx® FPGA is called configuration. The create_hw_cfgmem command defines a flash memory device used for configuring and booting the FPGA device.

When a new hw_cfgmem object is created, it becomes the current hw_cfgmem object. You can use the current_hw_cfgmem to return the current hw_cfgmem object, or you can specify a hw_cfgmem object, as returned by get_hw_cfgmems, to change the current object.

After the hw_cfgmem object is created, and associated with the hw_device, the configuration memory can be programmed with the bitstream and other data from a memory configuration file created with the write_cfgmem command.

The hw_cfgmem object is programmed using the program_hw_cfgmem command.

This command returns the current hardware cfgmem as an object, or returns an error if it fails.


-hw_device <arg> - (Required) Specify the hw_device object to set the current_hw_cfgmem on. The hw_device must be specified as an object as returned by the current_hw_device or get_hw_devices commands.

-quiet - (Optional) Execute the command quietly, returning no messages from the command. The command also returns TCL_OK regardless of any errors encountered during execution.
Note: Any errors encountered on the command-line, while launching the command, will be returned. Only errors occurring inside the command will be trapped.
-verbose - (Optional) Temporarily override any message limits and return all messages from this command.
Note: Message limits can be defined with the set_msg_config command.

<hw_cfgmem> - (Optional) Specify the hw_cfgmem object to use as the current configuration memory for programming and debug. The hw_cfgmem must be specified as an object as returned by the get_hw_cfgmems command.


The following example returns the current hardware cfgmem object: