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.

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
FSP Notify(EnumInitPhaseAfterPciEnumeration) hangs if 00:02.03/00:02.03 are hidden
- Release MR2
- Seems to get stuck on some SKUs only if hidden after MemoryInit
- Workaround: Hide before MemoryInit
- Issue on public tracker: Issue 35

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
MRC forces memory re-training on cold boot on boards with Intel SPS
- Releases 3.7.1, 3.7.6
- Workaround: Flash Intel ME instead of SPS
- Issue on public tracker: Issue 41

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

Disabling the internal graphics causes a crash in FSP-M
- 7.0.68.40 and older version
- Workaround: Set "tconfig->PanelPowerEnable = 0"
- Issue on public tracker: Issue 49