TianoCore EDK2 master
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QemuFwCfgS3PeiDxe.c
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1
10#include <Library/BaseLib.h>
11#include <Library/QemuFwCfgLib.h>
12#include <Library/QemuFwCfgS3Lib.h>
13
25BOOLEAN
26EFIAPI
27QemuFwCfgS3Enabled (
28 VOID
29 )
30{
31 RETURN_STATUS Status;
32 FIRMWARE_CONFIG_ITEM FwCfgItem;
33 UINTN FwCfgSize;
34 UINT8 SystemStates[6];
35
36 if (TdIsEnabled ()) {
37 return FALSE;
38 }
39
40 Status = QemuFwCfgFindFile ("etc/system-states", &FwCfgItem, &FwCfgSize);
41 if ((Status != RETURN_SUCCESS) || (FwCfgSize != sizeof SystemStates)) {
42 return FALSE;
43 }
44
45 QemuFwCfgSelectItem (FwCfgItem);
46 QemuFwCfgReadBytes (sizeof SystemStates, SystemStates);
47 return (BOOLEAN)(SystemStates[3] & BIT7);
48}
UINTN
UINT64 UINTN
Definition: ProcessorBind.h:112
RETURN_SUCCESS
#define RETURN_SUCCESS
Definition: Base.h:1066
FALSE
#define FALSE
Definition: Base.h:307
TdIsEnabled
BOOLEAN EFIAPI TdIsEnabled()
Definition: IntelTdxNull.c:79
QemuFwCfgFindFile
RETURN_STATUS EFIAPI QemuFwCfgFindFile(IN CONST CHAR8 *Name, OUT FIRMWARE_CONFIG_ITEM *Item, OUT UINTN *Size)
Definition: QemuFwCfgLib.c:250
QemuFwCfgReadBytes
VOID EFIAPI QemuFwCfgReadBytes(IN UINTN Size, IN VOID *Buffer OPTIONAL)
Definition: QemuFwCfgNull.c:66
QemuFwCfgSelectItem
VOID EFIAPI QemuFwCfgSelectItem(IN FIRMWARE_CONFIG_ITEM QemuFwCfgItem)
Definition: QemuFwCfgLib.c:33
QemuFwCfgS3Enabled
BOOLEAN EFIAPI QemuFwCfgS3Enabled(VOID)
Definition: QemuFwCfgS3PeiDxe.c:27