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From: "Gerd Hoffmann" <kraxel@redhat.com>
To: devel@edk2.groups.io
Cc: Oliver Steffen <osteffen@redhat.com>,
Laszlo Ersek <lersek@redhat.com>,
Rahul Kumar <rahul1.kumar@intel.com>,
Ray Ni <ray.ni@intel.com>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: [edk2-devel] [PATCH v2 2/5] UefiCpuPkg/MpInitLib: Add support for multiple HOBs to GetBspNumber()
Date: Tue, 20 Feb 2024 18:49:36 +0100
Message-ID: <20240220174939.1288689-3-kraxel@redhat.com>
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Rename the MpHandOff parameter to FirstMpHandOff. Add a loop so the
function inspects all HOBs present in the system.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
UefiCpuPkg/Library/MpInitLib/MpLib.c | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index e764bc9e4228..8f198ff6d817 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -1894,26 +1894,33 @@ CheckAllAPs (
/**
This function Get BspNumber.
- @param[in] MpHandOff Pointer to MpHandOff
+ @param[in] FirstMpHandOff Pointer to first MpHandOff HOB.
@return BspNumber
**/
UINT32
GetBspNumber (
- IN CONST MP_HAND_OFF *MpHandOff
+ IN CONST MP_HAND_OFF *FirstMpHandOff
)
{
- UINT32 ApicId;
- UINT32 BspNumber;
- UINT32 Index;
+ UINT32 ApicId;
+ UINT32 BspNumber;
+ UINT32 Index;
+ CONST MP_HAND_OFF *MpHandOff;
//
// Get the processor number for the BSP
//
BspNumber = MAX_UINT32;
ApicId = GetInitialApicId ();
- for (Index = 0; Index < MpHandOff->CpuCount; Index++) {
- if (MpHandOff->Info[Index].ApicId == ApicId) {
- BspNumber = Index;
+
+ for (MpHandOff = FirstMpHandOff;
+ MpHandOff != NULL;
+ MpHandOff = GetNextMpHandOffHob (MpHandOff))
+ {
+ for (Index = 0; Index < MpHandOff->CpuCount; Index++) {
+ if (MpHandOff->Info[Index].ApicId == ApicId) {
+ BspNumber = MpHandOff->ProcessorIndex + Index;
+ }
}
}
--
2.43.2
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