mirror of https://github.com/acidanthera/audk.git
271d8cd7df
Current implemenation sets PM1_CNT.SCI_EN bit at ReadyToBoot event. However, this should not be done because this causes OS to skip triggering FADT.SMI_CMD, which leads to the functions implemented in the SMI handler being omitted. This issue was identified by Matt Delco <delco@google.com>. The fix does the following: - The SCI_EN bit setting is removed from CbSupportDxe driver. - Some additional checks are added in CbParseFadtInfo() in CbParseLib.c to output some error message and ASSERT (FALSE) if ALL of the following conditions are met: 1) HARDWARE_REDUCED_ACPI is not set; 2) SMI_CMD field is zero; 3) SCI_EN bit is zero; which indicates the ACPI enabling status is inconsistent: SCI is not enabled but the ACPI table does not provide a means to enable it through FADT->SMI_CMD. This may cause issues in OS. Cc: Maurice Ma <maurice.ma@intel.com> Cc: Prince Agyeman <prince.agyeman@intel.com> Cc: Matt Delco <delco@google.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Benjamin You <benjamin.you@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> Reviewed-by: Matt Delco <delco@google.com> |
||
|---|---|---|
| .. | ||
| CbSupportDxe.c | ||
| CbSupportDxe.h | ||
| CbSupportDxe.inf | ||