If the EFI_SEC_HOB_DATA_PPI is in the list of PPIs passed to the PEI
entry point, the PEI Foundation will call the GetHobs() member
function and install all HOBs returned into the HOB list. It does
this after installing all PPIs passed from SEC into the PPI database
and before dispatching any PEIMs.
Cc: Liming Gao <liming....@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.z...@intel.com>
---
MdeModulePkg/Core/Pei/Hob/Hob.c | 74 ++++++++++++++++++++++++++++++++++++++-
MdeModulePkg/Core/Pei/PeiMain.h | 17 +++++++++
MdeModulePkg/Core/Pei/PeiMain.inf | 3 +-
MdeModulePkg/Core/Pei/Ppi/Ppi.c | 19 +++++++++-
4 files changed, 110 insertions(+), 3 deletions(-)
diff --git a/MdeModulePkg/Core/Pei/Hob/Hob.c b/MdeModulePkg/Core/Pei/Hob/Hob.c
index e0ee8e7f1062..bb9f3f744e96 100644
--- a/MdeModulePkg/Core/Pei/Hob/Hob.c
+++ b/MdeModulePkg/Core/Pei/Hob/Hob.c
@@ -1,7 +1,7 @@
/** @file
This module provide Hand-Off Block manupulation.
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
which accompanies this distribution. The full text of the license may be
found at
@@ -125,6 +125,78 @@ PeiCreateHob (
}
/**
+ Install SEC HOB data to the HOB List.
+
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table
published by the PEI Foundation.
+ @param SecHobList Pointer to SEC HOB List.
+
+ @return EFI_SUCCESS Success to install SEC HOB data.
+ @retval EFI_OUT_OF_RESOURCES If there is no more memory to grow the Hoblist.
+
+**/
+EFI_STATUS
+PeiInstallSecHobData (
+ IN CONST EFI_PEI_SERVICES **PeiServices,
+ IN EFI_HOB_GENERIC_HEADER *SecHobList
+ )
+{
+ EFI_STATUS Status;
+ EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;
+ EFI_PEI_HOB_POINTERS HobStart;
+ EFI_PEI_HOB_POINTERS Hob;
+ UINTN SecHobListLength;
+ EFI_PHYSICAL_ADDRESS FreeMemory;
+ EFI_HOB_GENERIC_HEADER *HobEnd;
+
+ HandOffHob = NULL;
+ Status = PeiGetHobList (PeiServices, (VOID **) &HandOffHob);
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+ ASSERT (HandOffHob != NULL);
+
+ HobStart.Raw = (UINT8 *) SecHobList;
+ //
+ // The HobList must not contain a EFI_HOB_HANDOFF_INFO_TABLE HOB (PHIT) HOB.
+ //
+ ASSERT (HobStart.Header->HobType != EFI_HOB_TYPE_HANDOFF);
+ //
+ // Calculate the SEC HOB List length,
+ // not including the terminated HOB(EFI_HOB_TYPE_END_OF_HOB_LIST).
+ //
+ for (Hob.Raw = HobStart.Raw; !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB
(Hob));
+ SecHobListLength = (UINTN) Hob.Raw - (UINTN) HobStart.Raw;
+ //
+ // The length must be 8-bytes aligned.
+ //
+ ASSERT ((SecHobListLength & 0x7) == 0);
+
+ FreeMemory = HandOffHob->EfiFreeMemoryTop -
+ HandOffHob->EfiFreeMemoryBottom;
+
+ if (FreeMemory < SecHobListLength) {
+ DEBUG ((DEBUG_ERROR, "PeiInstallSecHobData fail: SecHobListLength -
0x%08x\n", SecHobListLength));
+ DEBUG ((DEBUG_ERROR, " FreeMemoryTop - 0x%08x\n",
(UINTN)HandOffHob->EfiFreeMemoryTop));
+ DEBUG ((DEBUG_ERROR, " FreeMemoryBottom - 0x%08x\n",
(UINTN)HandOffHob->EfiFreeMemoryBottom));
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Hob.Raw = (UINT8 *) (UINTN) HandOffHob->EfiEndOfHobList;
+ CopyMem (Hob.Raw, HobStart.Raw, SecHobListLength);
+
+ HobEnd = (EFI_HOB_GENERIC_HEADER *) ((UINTN) Hob.Raw + SecHobListLength);
+ HandOffHob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;
+
+ HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;
+ HobEnd->HobLength = (UINT16) sizeof (EFI_HOB_GENERIC_HEADER);
+ HobEnd->Reserved = 0;
+ HobEnd++;
+ HandOffHob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;
+
+ return EFI_SUCCESS;
+}
+
+/**
Builds a Handoff Information Table HOB
diff --git a/MdeModulePkg/Core/Pei/PeiMain.h b/MdeModulePkg/Core/Pei/PeiMain.h
index e95b1c3d8cd7..277f54a0c6ad 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.h
+++ b/MdeModulePkg/Core/Pei/PeiMain.h
@@ -30,6 +30,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
EXPRESS OR IMPLIED.
#include <Ppi/Security2.h>
#include <Ppi/TemporaryRamSupport.h>
#include <Ppi/TemporaryRamDone.h>
+#include <Ppi/SecHobData.h>
#include <Library/DebugLib.h>
#include <Library/PeiCoreEntryPoint.h>
#include <Library/BaseLib.h>
@@ -721,6 +722,22 @@ PeiCoreBuildHobHandoffInfoTable (
IN UINT64 MemoryLength
);
+/**
+ Install SEC HOB data to the HOB List.
+
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table
published by the PEI Foundation.
+ @param SecHobList Pointer to SEC HOB List.
+
+ @return EFI_SUCCESS Success to install SEC HOB data.
+ @retval EFI_OUT_OF_RESOURCES If there is no more memory to grow the Hoblist.
+
+**/
+EFI_STATUS
+PeiInstallSecHobData (
+ IN CONST EFI_PEI_SERVICES **PeiServices,
+ IN EFI_HOB_GENERIC_HEADER *SecHobList
+ );
+
//
// FFS Fw Volume support functions
diff --git a/MdeModulePkg/Core/Pei/PeiMain.inf
b/MdeModulePkg/Core/Pei/PeiMain.inf
index 39a464f32633..21ce2be7784d 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.inf
+++ b/MdeModulePkg/Core/Pei/PeiMain.inf
@@ -6,7 +6,7 @@
# 2) Dispatch PEIM from discovered FV.
# 3) Handoff control to DxeIpl to load DXE core and enter DXE phase.
#
-# Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD
License
@@ -101,6 +101,7 @@ [Ppis]
gEfiTemporaryRamSupportPpiGuid ## SOMETIMES_CONSUMES
gEfiTemporaryRamDonePpiGuid ## SOMETIMES_CONSUMES
gEfiPeiReset2PpiGuid ## SOMETIMES_CONSUMES
+ gEfiSecHobDataPpiGuid ## SOMETIMES_CONSUMES
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxFvSupported ##
CONSUMES
diff --git a/MdeModulePkg/Core/Pei/Ppi/Ppi.c b/MdeModulePkg/Core/Pei/Ppi/Ppi.c
index b2ab3fbd2086..36b8c235b235 100644
--- a/MdeModulePkg/Core/Pei/Ppi/Ppi.c
+++ b/MdeModulePkg/Core/Pei/Ppi/Ppi.c
@@ -726,7 +726,9 @@ ProcessPpiListFromSec (
IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
+ EFI_SEC_HOB_DATA_PPI *SecHobDataPpi;
+ EFI_HOB_GENERIC_HEADER *SecHobList;
for (;;) {
if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) != 0) {
@@ -752,5 +754,20 @@ ProcessPpiListFromSec (
PpiList++;
}
+
+ //
+ // If the EFI_SEC_HOB_DATA_PPI is in the list of PPIs passed to the PEI
entry point,
+ // the PEI Foundation will call the GetHobs() member function and install
all HOBs
+ // returned into the HOB list. It does this after installing all PPIs passed
from SEC
+ // into the PPI database and before dispatching any PEIMs.
+ //
+ Status = PeiLocatePpi (PeiServices, &gEfiSecHobDataPpiGuid, 0, NULL, (VOID
**) &SecHobDataPpi);
+ if (!EFI_ERROR (Status)) {
+ Status = SecHobDataPpi->GetHobs (SecHobDataPpi, &SecHobList);
+ if (!EFI_ERROR (Status)) {
+ Status = PeiInstallSecHobData (PeiServices, SecHobList);
+ ASSERT_EFI_ERROR (Status);
+ }
+ }
}
--
2.7.0.windows.1
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel
