6.5 Configure Design Initialization Data and Memories

The Configure Design Initialization Data and Memories option creates the LSRAM initialization client. When the PolarFire device powers up, the LSRAM memory is initialized with the sNVM contents.

To create the LSRAM initialization client, perform the following steps:

1. On the Design Flow tab, double click Configure Design Initialization Data and Memories, as shown in the following figure.

   

2. In the Configure Design Initialization Data and Memories window, select the Fabric RAMs tab, and then select the pf_sram file to import the memory information, as shown in the following figure.

   

3. Import the hex file (gbe_webserver.hex for webserver design and gbe_tftp_iap.hex for TFTP_IAP design) provided with the design files from

   mpf_an4569_v2023p2_eval_df\webserver\TCL_Scripts\src\src_softconsole\gbe_webserver.hex

   or

   mpf_an4569_v2023p2_eval_df\tftp_iap\TCL_Scripts\src\src_softconsole\gbe_tftp_iap.hex

   The gbe_webserver.hex or gbe_tftp_iap.hex file is a application file generated using 
SoftConsole that configures the ZL clock generation hardware, the CoreTSE_AHB registers, and the VSC PHY. The application code is initially stored in an external SPI Flash. On device power-up, the system controller copies the code to LSRAM from external SPI Flash, and the Mi-V processor executes the code from LSRAM. To ensure that the fabric LSRAM contents are stored in the external SPI Flash, select Storage Type as SPI Flash, see in Figure 6-3.

4. Click Apply.
5. Select Start address for SPI Flash clients and SPI Clock divider value, in the Design Initialization tab as shown in the following figure.

   

   Note: The default start address for SPI-Flash clients 0x400 is used for the webserver design. The start address for TFTP design is modified to 0x2000. This is required to support Flash erase of 4 KB while writing the SPI directory into initial SPI Flash 1 KB memory using design firmware.
6. On the Design Flow tab, double click Generate Design Initialization Data.

   When the LSRAM initialization client is successfully generated in sNVM, a green tick appears next to Generate Design Initialization Data, as shown in Figure 6-1.

   When the device is programmed, the LSRAM block is initialized from the sNVM.