This section outlines the steps to generate and program the MCS file.
The MCS file represents the PROM image which is loaded onto the Alveo accelerator card at power on. It is generated using the write_cfgmem tool. This section outlines the steps to generate and program the MCS file.
Prior to generating the MCS file, ensure your project XDC file sets the following properties.
- CONFIG_VOLTAGE
- BITSTREAM.CONFIG.CONFIGFALLBACK
- BITSTREAM.GENERAL.COMPRESS
- CONFIG_MODE
- BITSTREAM.CONFIG.SPI_BUSWIDTH
- BITSTREAM.CONFIG.CONFIGRATE
- BITSTREAM.CONFIG.EXTMASTERCCLK_EN
- BITSTREAM.CONFIG.SPI_FALL_EDGE
- BITSTREAM.CONFIG.UNUSEDPIN
- BITSTREAM.CONFIG.SPI_32BIT_ADDR
Use the following command with the parameters outlined in Table 1 to generate the MCS file.
write_cfgmem -force -format mcs -interface <interface_type> -size <size> -loadbit "up <user_config_region_offset> <input_file.bit>" -file "<output_file.mcs>"| write_cfgmem Parameter | Setting |
|---|---|
| interface_type |
spix4
|
| size | 128 |
| user_config_region_offset |
0x0
|
| input_file.bit | Filename of the input .bit file |
| output_file.mcs | MCS output filename |
For additional details on write_cfgmem, see the UltraScale Architecture Configuration User Guide (UG570).