REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4533
There are use cases which not all FVs need be migrated from TempRam to
permanent memory before TempRam tears down. This new guid is introduced
to avoid unnecessary FV migration to improve boot performance. Platform
can publish MigrationInfo hob with this guid to customize FV migration
info, and PeiCore will only migrate FVs indicated by this Hob info.
This is a backwards compatible change, PeiCore will check MigrationInfo
hob before migration. If MigrationInfo hobs exists, only migrate FVs
recorded by hobs. If MigrationInfo hobs not exists, migrate all FVs to
permanent memory.
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Ray Ni <ray...@intel.com>
Cc: Guomin Jiang <guomin.ji...@intel.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Signed-off-by: Fan Wang <fan.w...@intel.com>
---
MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c | 79 +++++++++++++------
MdeModulePkg/Core/Pei/PeiMain.inf | 1 +
MdeModulePkg/Include/Guid/MigratedFvInfo.h | 42 +++++++++-
MdeModulePkg/MdeModulePkg.dec | 3 +-
SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c | 7 +-
SecurityPkg/Tcg/TcgPei/TcgPei.c | 7 +-
6 files changed, 111 insertions(+), 28 deletions(-)
diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
index 5f32ebb560..0086087e82 100644
--- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
@@ -1184,7 +1184,12 @@ EvacuateTempRam (
PEI_CORE_FV_HANDLE PeiCoreFvHandle;
EFI_PEI_CORE_FV_LOCATION_PPI *PeiCoreFvLocationPpi;
+ EFI_PEI_HOB_POINTERS Hob;
+ EDKII_MIGRATION_INFO *MigrationInfo;
+ TO_MIGRATE_FV_INFO *ToMigrateFvInfo;
+ UINT32 FvMigrationFlags;
EDKII_MIGRATED_FV_INFO MigratedFvInfo;
+ UINTN Index;
ASSERT (Private->PeiMemoryInstalled);
@@ -1211,6 +1216,13 @@ EvacuateTempRam (
ConvertPeiCorePpiPointers (Private, &PeiCoreFvHandle);
+ Hob.Raw = GetFirstGuidHob (&gEdkiiMigrationInfoGuid);
+ if (Hob.Raw != NULL) {
+ MigrationInfo = GET_GUID_HOB_DATA (Hob);
+ } else {
+ MigrationInfo = NULL;
+ }
+
for (FvIndex = 0; FvIndex < Private->FvCount; FvIndex++) {
FvHeader = Private->Fv[FvIndex].FvHeader;
ASSERT (FvHeader != NULL);
@@ -1224,20 +1236,27 @@ EvacuateTempRam (
)
)
{
- //
- // Allocate page to save the rebased PEIMs, the PEIMs will get
dispatched later.
- //
- Status = PeiServicesAllocatePages (
- EfiBootServicesCode,
- EFI_SIZE_TO_PAGES ((UINTN)FvHeader->FvLength),
- &FvHeaderAddress
- );
- ASSERT_EFI_ERROR (Status);
- MigratedFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;
+ if ((MigrationInfo == NULL) || (MigrationInfo->MigrateAll == TRUE)) {
+ // Migrate all FVs and copy raw data
+ FvMigrationFlags = FLAGS_FV_RAW_DATA_COPY;
+ } else {
+ for (Index = 0; Index < MigrationInfo->ToMigrateFvCount; Index++) {
+ ToMigrateFvInfo = ((TO_MIGRATE_FV_INFO *)(MigrationInfo + 1)) +
Index;
+ if (ToMigrateFvInfo->FvOrgBaseOnTempRam == (UINT32)(UINTN)FvHeader) {
+ // This FV is to migrate
+ FvMigrationFlags = ToMigrateFvInfo->FvMigrationFlags;
+ break;
+ }
+ }
+
+ if (Index == MigrationInfo->ToMigrateFvCount) {
+ // This FV is not expected to migrate
+ continue;
+ }
+ }
//
- // Allocate pool to save the raw PEIMs, which is used to keep consistent
context across
- // multiple boot and PCR0 will keep the same no matter if the address of
allocated page is changed.
+ // Allocate pages to save the rebased PEIMs, the PEIMs will get
dispatched later.
//
Status = PeiServicesAllocatePages (
EfiBootServicesCode,
@@ -1245,7 +1264,8 @@ EvacuateTempRam (
&FvHeaderAddress
);
ASSERT_EFI_ERROR (Status);
- RawDataFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;
+ MigratedFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;
+ CopyMem (MigratedFvHeader, FvHeader, (UINTN)FvHeader->FvLength);
DEBUG ((
DEBUG_VERBOSE,
@@ -1256,17 +1276,34 @@ EvacuateTempRam (
));
//
- // Copy the context to the rebased pages and raw pages, and create hob
to save the
- // information. The MigratedFvInfo HOB will never be produced when
- // PcdMigrateTemporaryRamFirmwareVolumes is FALSE, because the PCD
control the
- // feature.
+ // Create hob to save MigratedFvInfo, this hob will only be produced when
+ // Migration feature PCD PcdMigrateTemporaryRamFirmwareVolumes is set to
TRUE.
//
- CopyMem (MigratedFvHeader, FvHeader, (UINTN)FvHeader->FvLength);
- CopyMem (RawDataFvHeader, MigratedFvHeader, (UINTN)FvHeader->FvLength);
MigratedFvInfo.FvOrgBase = (UINT32)(UINTN)FvHeader;
MigratedFvInfo.FvNewBase = (UINT32)(UINTN)MigratedFvHeader;
- MigratedFvInfo.FvDataBase = (UINT32)(UINTN)RawDataFvHeader;
+ MigratedFvInfo.FvDataBase = 0;
MigratedFvInfo.FvLength = (UINT32)(UINTN)FvHeader->FvLength;
+
+ //
+ // When FLAGS_FV_RAW_DATA_COPY bit is set, copy the context to the raw
pages and
+ // reset raw data base address in MigratedFvInfo hob.
+ //
+ if ((FvMigrationFlags & FLAGS_FV_RAW_DATA_COPY) ==
FLAGS_FV_RAW_DATA_COPY) {
+ DEBUG ((DEBUG_INFO, " Copying Raw Data ...\n"));
+ //
+ // Allocate pages to save the raw PEIMs
+ //
+ Status = PeiServicesAllocatePages (
+ EfiBootServicesCode,
+ EFI_SIZE_TO_PAGES ((UINTN)FvHeader->FvLength),
+ &FvHeaderAddress
+ );
+ ASSERT_EFI_ERROR (Status);
+ RawDataFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvHeaderAddress;
+ CopyMem (RawDataFvHeader, MigratedFvHeader, (UINTN)FvHeader->FvLength);
+ MigratedFvInfo.FvDataBase = (UINT32)(UINTN)RawDataFvHeader;
+ }
+
BuildGuidDataHob (&gEdkiiMigratedFvInfoGuid, &MigratedFvInfo, sizeof
(MigratedFvInfo));
//
@@ -1330,8 +1367,6 @@ EvacuateTempRam (
}
}
- RemoveFvHobsInTemporaryMemory (Private);
-
return Status;
}
diff --git a/MdeModulePkg/Core/Pei/PeiMain.inf
b/MdeModulePkg/Core/Pei/PeiMain.inf
index 0cf357371a..893bdc0527 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.inf
+++ b/MdeModulePkg/Core/Pei/PeiMain.inf
@@ -78,6 +78,7 @@
gEfiFirmwareFileSystem3Guid
gStatusCodeCallbackGuid
gEdkiiMigratedFvInfoGuid ## SOMETIMES_PRODUCES ##
HOB
+ gEdkiiMigrationInfoGuid ## SOMETIMES_CONSUMES ##
HOB
[Ppis]
gEfiPeiStatusCodePpiGuid ## SOMETIMES_CONSUMES #
PeiReportStatusService is not ready if this PPI doesn't exist
diff --git a/MdeModulePkg/Include/Guid/MigratedFvInfo.h
b/MdeModulePkg/Include/Guid/MigratedFvInfo.h
index aca2332a0e..1c8b0dfefc 100644
--- a/MdeModulePkg/Include/Guid/MigratedFvInfo.h
+++ b/MdeModulePkg/Include/Guid/MigratedFvInfo.h
@@ -9,13 +9,53 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#ifndef __EDKII_MIGRATED_FV_INFO_GUID_H__
#define __EDKII_MIGRATED_FV_INFO_GUID_H__
+//
+// FLAGS_FV_RAW_DATA_COPY indicates FV raw data will be copied to permanent
memory
+// or not. When FV is migrated to permanent memory, it will be rebased and raw
+// data will be lost. This bit can be configured as below values:
+// 0: FV raw data will not be used in later phase, and the copy will be
skipped to
+// optimize boot performance.
+// 1: FV raw data will be copied to permanent memory for later phase use (such
as
+// FV measurement).
+//
+#define FLAGS_FV_RAW_DATA_COPY BIT0
+
+///
+/// In real use cases, not all FVs need migrate to permanent memory before
TempRam tears
+/// down. EDKII_MIGRATION_INFO hob should be published by platform to indicate
which
+/// FVs need migration to optimize boot performance. If this hob is not
detected by Pei
+/// Core, all FVs on TempRam will be migrated and FV raw data will also be
copied.
+/// Only one EDKII_MIGRATION_INFO hob should be published by platform, and
this hob will
+/// take effect only when migration feature is enabled by PCD.
+///
+typedef struct {
+ UINT32 FvOrgBaseOnTempRam; // Original FV address on Temporary Ram
+ //
+ // FV Migration Flags:
+ // Bit0: Indicate to copy FV raw data or not
+ // Others: Reserved bits
+ //
+ UINT32 FvMigrationFlags;
+} TO_MIGRATE_FV_INFO;
+
+typedef struct {
+ BOOLEAN MigrateAll; // Migrate all FVs and also copy
FV raw data
+ //
+ // ToMigrateFvCount and ToMigrateFvInfo array indicate which FVs need be
migrated, and
+ // these info should be ignored when MigrateAll field is set to TRUE.
+ //
+ UINT32 ToMigrateFvCount;
+ // TO_MIGRATE_FV_INFO ToMigrateFvInfo[];
+} EDKII_MIGRATION_INFO;
+
typedef struct {
UINT32 FvOrgBase; // original FV address
UINT32 FvNewBase; // new FV address
- UINT32 FvDataBase; // original FV data
+ UINT32 FvDataBase; // original FV data, 0 means raw data is not
copied
UINT32 FvLength; // Fv Length
} EDKII_MIGRATED_FV_INFO;
+extern EFI_GUID gEdkiiMigrationInfoGuid;
extern EFI_GUID gEdkiiMigratedFvInfoGuid;
#endif // #ifndef __EDKII_MIGRATED_FV_INFO_GUID_H__
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 1a162e97e6..a2cd83345f 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -421,7 +421,8 @@
gEdkiiCapsuleOnDiskNameGuid = { 0x98c80a4f, 0xe16b, 0x4d11, { 0x93, 0x9a,
0xab, 0xe5, 0x61, 0x26, 0x3, 0x30 } }
## Include/Guid/MigratedFvInfo.h
- gEdkiiMigratedFvInfoGuid = { 0xc1ab12f7, 0x74aa, 0x408d, { 0xa2, 0xf4, 0xc6,
0xce, 0xfd, 0x17, 0x98, 0x71 } }
+ gEdkiiMigrationInfoGuid = { 0xb4b140a5, 0x72f6, 0x4c21, { 0x93, 0xe4,
0xac, 0xc4, 0xec, 0xcb, 0x23, 0x23 } }
+ gEdkiiMigratedFvInfoGuid = { 0xc1ab12f7, 0x74aa, 0x408d, { 0xa2, 0xf4,
0xc6, 0xce, 0xfd, 0x17, 0x98, 0x71 } }
## Include/Guid/RngAlgorithm.h
gEdkiiRngAlgorithmUnSafe = { 0x869f728c, 0x409d, 0x4ab4, {0xac, 0x03, 0x71,
0xd3, 0x09, 0xc1, 0xb3, 0xf4 }}
diff --git a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
index 1caaa4e319..daaf49e644 100644
--- a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
+++ b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
@@ -726,8 +726,11 @@ MeasureFvImage (
//
// Found the migrated FV info
//
- FvOrgBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvOrgBase;
- FvDataBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvDataBase;
+ FvOrgBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvOrgBase;
+ if (MigratedFvInfo->FvDataBase != 0) {
+ FvDataBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvDataBase;
+ }
+
break;
}
diff --git a/SecurityPkg/Tcg/TcgPei/TcgPei.c b/SecurityPkg/Tcg/TcgPei/TcgPei.c
index 5aa80511aa..d35c2ad0bc 100644
--- a/SecurityPkg/Tcg/TcgPei/TcgPei.c
+++ b/SecurityPkg/Tcg/TcgPei/TcgPei.c
@@ -463,8 +463,11 @@ MeasureFvImage (
//
// Found the migrated FV info
//
- FvOrgBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvOrgBase;
- FvDataBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvDataBase;
+ FvOrgBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvOrgBase;
+ if (MigratedFvInfo->FvDataBase != 0) {
+ FvDataBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MigratedFvInfo->FvDataBase;
+ }
+
break;
}
--
2.26.2.windows.1
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