Status And Setup Components - Terasic Mercury A2700 User Manual

The factory SoC boot process of Apollo Agilex is summarized as follows:
When the Mercury A2700 Accelerator Card is powered on, the SDM will read the
configuration firmware and complete SDM initial form the QSPI flash according to the
MSEL pin setting. Then, the SDM will configure the FPGA I/O and core (full
configuration).
After the FPGA is first configured, SDM continues to load the FSBL(First-Stage Boot
Loader) from the QSPI flash and transfer it to the HPS on-chip RAM, and releases the
HPS reset to let the HPS start using the FSBL hardware handoff file to setup the clocks,
HPS dedicated I/Os, and peripherals.
The FSBL then loads the SSBL(Second-Stage Boot Loader) from the Micro SD Card
into HPS SDRAM and passes the control to the SSBL. The SSBL enables more
advanced peripherals and loads OS into SDRAM.
Finally, the OS boots and applications are scheduled for runtime launch.
2.3

Status and Setup Components

 Status LED
The FPGA Board development board includes board-specific status LEDs to indicate
board status. Please refer to
indicator.
MA27
User Manual
Figure 2-7 and Table 2-1
18
for the description of the LED
www.terasic.com
February 17,
2024