This patch will fix reboot issue after issuing shell command "reset -s" from
UEFI payload.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Dong <guo.d...@intel.com>
---
.../Library/ResetSystemLib/ResetSystemLib.c | 31 ++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/CorebootPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c
b/CorebootPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c
index 77b81db..55f5609 100644
--- a/CorebootPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c
+++ b/CorebootPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c
@@ -110,15 +110,42 @@ VOID
EFIAPI
ResetShutdown (
VOID
)
{
- AcpiPmControl (7);
+ EFI_HOB_GUID_TYPE *GuidHob;
+ ACPI_BOARD_INFO *pAcpiBoardInfo;
+ UINTN PmCtrlReg;
+
+ //
+ // Find the acpi board information guid hob
+ //
+ GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
+ ASSERT (GuidHob != NULL);
+ pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
+
+ //
+ // GPE0_EN should be disabled to avoid any GPI waking up the system from S5
+ //
+ IoWrite16 ((UINTN)pAcpiBoardInfo->PmGpeEnBase, 0);
+
+ //
+ // Clear Power Button Status
+ //
+ IoWrite16((UINTN) pAcpiBoardInfo->PmEvtBase, BIT8);
+
+ //
+ // Transform system into S5 sleep state
+ //
+ PmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase;
+ IoAndThenOr16 (PmCtrlReg, (UINT16) ~0x3c00, (UINT16) (7 << 10));
+ IoOr16 (PmCtrlReg, BIT13);
+ CpuDeadLoop ();
+
ASSERT (FALSE);
}
-
/**
Calling this function causes the system to enter a power state for capsule
update.
Reset update should not return, if it returns, it means the system does
--
1.9.5.msysgit.0
------------------------------------------------------------------------------
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