diff options
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/MpLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index cdfb570e61..16fc7dc066 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -1961,25 +1961,31 @@ SwitchApContext ( }
/**
- Get pointer to MP_HAND_OFF GUIDed HOB.
+ Get pointer to next MP_HAND_OFF GUIDed HOB body.
+
+ @param[in] MpHandOff Previous HOB body. Pass NULL to get the first HOB.
@return The pointer to MP_HAND_OFF structure.
**/
MP_HAND_OFF *
-GetMpHandOffHob (
- VOID
+GetNextMpHandOffHob (
+ IN CONST MP_HAND_OFF *MpHandOff
)
{
EFI_HOB_GUID_TYPE *GuidHob;
- MP_HAND_OFF *MpHandOff;
- MpHandOff = NULL;
- GuidHob = GetFirstGuidHob (&mMpHandOffGuid);
- if (GuidHob != NULL) {
- MpHandOff = (MP_HAND_OFF *)GET_GUID_HOB_DATA (GuidHob);
+ if (MpHandOff == NULL) {
+ GuidHob = GetFirstGuidHob (&mMpHandOffGuid);
+ } else {
+ GuidHob = (VOID *)(((UINT8 *)MpHandOff) - sizeof (EFI_HOB_GUID_TYPE));
+ GuidHob = GetNextGuidHob (&mMpHandOffGuid, GET_NEXT_HOB (GuidHob));
+ }
+
+ if (GuidHob == NULL) {
+ return NULL;
}
- return MpHandOff;
+ return (MP_HAND_OFF *)GET_GUID_HOB_DATA (GuidHob);
}
/**
@@ -2020,7 +2026,7 @@ MpInitLibInitialize ( UINTN BackupBufferAddr;
UINTN ApIdtBase;
- MpHandOff = GetMpHandOffHob ();
+ MpHandOff = GetNextMpHandOffHob (NULL);
if (MpHandOff == NULL) {
MaxLogicalProcessorNumber = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);
} else {
|