Intel Firmware Support Package (FSP)-specific documentation

This section contains documentation about Intel-FSP in public domain.

Bugs

As Intel doesn't even list known bugs, they are collected here until those are fixed. If possible a workaround is described here as well.

BroadwellDEFsp

• IA32_FEATURE_CONTROL MSR is locked in FSP-M

  • Release MR2
  • Writing the MSR is required in ramstage for Intel TXT
  • Workaround: none
  • Issue on public tracker: Issue 10

• FSP-S asserts if the thermal PCI device 00:1f.6 is disabled

  • Release MR2
  • FSP expects the PCI device to be enabled
  • FSP expects BARs to be properly assigned
  • Workaround: Don't disable this PCI device
  • Issue on public tracker: Issue 13

KabylakeFsp

• MfgId and ModulePartNum in the DIMM_INFO struct are empty
  • Release 3.7.1
  • Those values are typically consumed by SMBIOS type 17
  • Workaround: none
  • Issue on public tracker: Issue 22

BraswellFsp

• Internal UART can't be disabled using PcdEnableHsuart*
  • Release MR2
  • Workaround: Disable internal UART manually after calling FSP
  • Issue on public tracker: Issue 10

Open Source Intel FSP specification

• About Intel FSP

• FSP Specification 1.0

• FSP Specification 1.1

• FSP Specification 2.0

• FSP Specification 2.1

Additional Features in FSP 2.1 specification

• PPI

Official bugtracker

• IntelFSP/FSP