Disable reboot after PCIe fatal error

Hello,

we are using a PowerEdge 730 with a custom FPGA card implementing a PCIe endpoint. For firmware development we'd like to reprogram the FPGA with a new firmware without going through a reboot, and use the card again after a rescan of PCIe (this procedure is used successfully on hosts from several other vendors).

However, as soon as the process of updating the FPGA firmware on the PowerEdge starts, the machine does a reboot. The system event log shows the following messages: 

A bus fatal error was detected on a component at slot 4.
A fatal error was detected on a component at bus 128 device 2 function 0.
An OEM diagnostic event occurred.

Is there a way to avoid having the machine going through the reboot? What has to be disabled/enabled?

Best regards,