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| author | Kun Qin <kun.q@outlook.com> | 2020-12-18 03:09:24 -0800 |
|---|---|---|
| committer | Kun Qin <kun.q@outlook.com> | 2021-02-01 10:01:02 -0800 |
| commit | 037ccb09a28cb9c4528c0b638e9dc1d71ead28d1 (patch) | |
| tree | 5a5681f626a12217381ce17d6b9f0495e1727bb4 /StandaloneMmPkg | |
| parent | 2b9006762d2fb3637bd3a7d472f66c51aa8246f0 (diff) | |
| download | edk2-037ccb09a28cb9c4528c0b638e9dc1d71ead28d1.tar.gz edk2-037ccb09a28cb9c4528c0b638e9dc1d71ead28d1.tar.bz2 edk2-037ccb09a28cb9c4528c0b638e9dc1d71ead28d1.zip | |
StandaloneMmPkg: StandaloneMmMemLib: Extends support for X64 architecture
This change extends StandaloneMmMemLib library to support X64
architecture. The implementation is ported from MdePkg/Library/SmmMemLib.
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Diffstat (limited to 'StandaloneMmPkg')
4 files changed, 246 insertions, 1 deletions
diff --git a/StandaloneMmPkg/Library/StandaloneMmMemLib/AArch64/StandaloneMmMemLibInternal.c b/StandaloneMmPkg/Library/StandaloneMmMemLib/AArch64/StandaloneMmMemLibInternal.c index cb7c5e677a..4124959e04 100644 --- a/StandaloneMmPkg/Library/StandaloneMmMemLib/AArch64/StandaloneMmMemLibInternal.c +++ b/StandaloneMmPkg/Library/StandaloneMmMemLib/AArch64/StandaloneMmMemLibInternal.c @@ -40,4 +40,31 @@ MmMemLibInternalCalculateMaximumSupportAddress ( DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));
}
+/**
+ Initialize cached Mmram Ranges from HOB.
+
+ @retval EFI_UNSUPPORTED The routine is unable to extract MMRAM information.
+ @retval EFI_SUCCESS MmRanges are populated successfully.
+
+**/
+EFI_STATUS
+MmMemLibInternalPopulateMmramRanges (
+ VOID
+ )
+{
+ // Not implemented for AARCH64.
+ return EFI_SUCCESS;
+}
+
+/**
+ Deinitialize cached Mmram Ranges.
+
+**/
+VOID
+MmMemLibInternalFreeMmramRanges (
+ VOID
+ )
+{
+ // Not implemented for AARCH64.
+}
diff --git a/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.c b/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.c index b533bd8390..2737f95315 100644 --- a/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.c +++ b/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.c @@ -38,6 +38,27 @@ MmMemLibInternalCalculateMaximumSupportAddress ( );
/**
+ Initialize cached Mmram Ranges from HOB.
+
+ @retval EFI_UNSUPPORTED The routine is unable to extract MMRAM information.
+ @retval EFI_SUCCESS MmRanges are populated successfully.
+
+**/
+EFI_STATUS
+MmMemLibInternalPopulateMmramRanges (
+ VOID
+ );
+
+/**
+ Deinitialize cached Mmram Ranges.
+
+**/
+VOID
+MmMemLibInternalFreeMmramRanges (
+ VOID
+ );
+
+/**
This function check if the buffer is valid per processor architecture and not overlap with MMRAM.
@param Buffer The buffer start address to be checked.
@@ -253,11 +274,42 @@ MemLibConstructor ( IN EFI_MM_SYSTEM_TABLE *MmSystemTable
)
{
+ EFI_STATUS Status;
//
// Calculate and save maximum support address
//
MmMemLibInternalCalculateMaximumSupportAddress ();
+ //
+ // Initialize cached Mmram Ranges from HOB.
+ //
+ Status = MmMemLibInternalPopulateMmramRanges ();
+
+ return Status;
+}
+
+/**
+ Destructor for Mm Mem library.
+
+ @param ImageHandle The image handle of the process.
+ @param MmSystemTable The EFI System Table pointer.
+
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+MemLibDestructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_MM_SYSTEM_TABLE *MmSystemTable
+ )
+{
+
+ //
+ // Deinitialize cached Mmram Ranges.
+ //
+ MmMemLibInternalFreeMmramRanges ();
+
return EFI_SUCCESS;
}
diff --git a/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf b/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf index 49da02e54e..062b0d7a11 100644 --- a/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf +++ b/StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf @@ -8,6 +8,7 @@ #
# Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
+# Copyright (c) Microsoft Corporation.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -22,16 +23,20 @@ PI_SPECIFICATION_VERSION = 0x00010032
LIBRARY_CLASS = MemLib|MM_STANDALONE MM_CORE_STANDALONE
CONSTRUCTOR = MemLibConstructor
+ DESTRUCTOR = MemLibDestructor
#
# The following information is for reference only and not required by the build tools.
#
-# VALID_ARCHITECTURES = AARCH64
+# VALID_ARCHITECTURES = IA32 X64 AARCH64
#
[Sources.Common]
StandaloneMmMemLib.c
+[Sources.IA32, Sources.X64]
+ X86StandaloneMmMemLibInternal.c
+
[Sources.AARCH64]
AArch64/StandaloneMmMemLibInternal.c
@@ -42,3 +47,9 @@ [LibraryClasses]
BaseMemoryLib
DebugLib
+ HobLib
+ MemoryAllocationLib
+
+[Guids]
+ gMmCoreDataHobGuid ## SOMETIMES_CONSUMES ## HOB
+ gEfiMmPeiMmramMemoryReserveGuid ## SOMETIMES_CONSUMES ## HOB
diff --git a/StandaloneMmPkg/Library/StandaloneMmMemLib/X86StandaloneMmMemLibInternal.c b/StandaloneMmPkg/Library/StandaloneMmMemLib/X86StandaloneMmMemLibInternal.c new file mode 100644 index 0000000000..1a97854171 --- /dev/null +++ b/StandaloneMmPkg/Library/StandaloneMmMemLib/X86StandaloneMmMemLibInternal.c @@ -0,0 +1,155 @@ +/** @file
+ Internal ARCH Specific file of MM memory check library.
+
+ MM memory check library implementation. This library consumes MM_ACCESS_PROTOCOL
+ to get MMRAM information. In order to use this library instance, the platform should produce
+ all MMRAM range via MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core
+ and MM driver) and/or specific dedicated hardware.
+
+ Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
+ Copyright (c) Microsoft Corporation.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <PiMm.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+
+#include <Guid/MmCoreData.h>
+#include <Guid/MmramMemoryReserve.h>
+
+//
+// Maximum support address used to check input buffer
+//
+extern EFI_PHYSICAL_ADDRESS mMmMemLibInternalMaximumSupportAddress;
+extern EFI_MMRAM_DESCRIPTOR *mMmMemLibInternalMmramRanges;
+extern UINTN mMmMemLibInternalMmramCount;
+
+/**
+ Calculate and save the maximum support address.
+
+**/
+VOID
+MmMemLibInternalCalculateMaximumSupportAddress (
+ VOID
+ )
+{
+ VOID *Hob;
+ UINT32 RegEax;
+ UINT8 PhysicalAddressBits;
+
+ //
+ // Get physical address bits supported.
+ //
+ Hob = GetFirstHob (EFI_HOB_TYPE_CPU);
+ if (Hob != NULL) {
+ PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;
+ } else {
+ AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
+ if (RegEax >= 0x80000008) {
+ AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
+ PhysicalAddressBits = (UINT8) RegEax;
+ } else {
+ PhysicalAddressBits = 36;
+ }
+ }
+ //
+ // IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.
+ //
+ ASSERT (PhysicalAddressBits <= 52);
+ if (PhysicalAddressBits > 48) {
+ PhysicalAddressBits = 48;
+ }
+
+ //
+ // Save the maximum support address in one global variable
+ //
+ mMmMemLibInternalMaximumSupportAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)(LShiftU64 (1, PhysicalAddressBits) - 1);
+ DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));
+}
+
+/**
+ Initialize cached Mmram Ranges from HOB.
+
+ @retval EFI_UNSUPPORTED The routine is unable to extract MMRAM information.
+ @retval EFI_SUCCESS MmRanges are populated successfully.
+
+**/
+EFI_STATUS
+MmMemLibInternalPopulateMmramRanges (
+ VOID
+ )
+{
+ VOID *HobStart;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ MM_CORE_DATA_HOB_DATA *DataInHob;
+ MM_CORE_PRIVATE_DATA *MmCorePrivateData;
+ EFI_HOB_GUID_TYPE *MmramRangesHob;
+ EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;
+ EFI_MMRAM_DESCRIPTOR *MmramDescriptors;
+
+ HobStart = GetHobList ();
+ DEBUG ((DEBUG_INFO, "%a - 0x%x\n", __FUNCTION__, HobStart));
+
+ //
+ // Extract MM Core Private context from the Hob. If absent search for
+ // a Hob containing the MMRAM ranges
+ //
+ GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);
+ if (GuidHob == NULL) {
+ MmramRangesHob = GetFirstGuidHob (&gEfiMmPeiMmramMemoryReserveGuid);
+ if (MmramRangesHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);
+ if (MmramRangesHobData == NULL || MmramRangesHobData->Descriptor == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ mMmMemLibInternalMmramCount = MmramRangesHobData->NumberOfMmReservedRegions;
+ MmramDescriptors = MmramRangesHobData->Descriptor;
+ } else {
+ DataInHob = GET_GUID_HOB_DATA (GuidHob);
+ if (DataInHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ MmCorePrivateData = (MM_CORE_PRIVATE_DATA *) (UINTN) DataInHob->Address;
+ if (MmCorePrivateData == NULL || MmCorePrivateData->MmramRanges == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ mMmMemLibInternalMmramCount = (UINTN) MmCorePrivateData->MmramRangeCount;
+ MmramDescriptors = (EFI_MMRAM_DESCRIPTOR *) (UINTN) MmCorePrivateData->MmramRanges;
+ }
+
+ mMmMemLibInternalMmramRanges = AllocatePool (mMmMemLibInternalMmramCount * sizeof (EFI_MMRAM_DESCRIPTOR));
+ if (mMmMemLibInternalMmramRanges) {
+ CopyMem (mMmMemLibInternalMmramRanges,
+ MmramDescriptors,
+ mMmMemLibInternalMmramCount * sizeof (EFI_MMRAM_DESCRIPTOR));
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Deinitialize cached Mmram Ranges.
+
+**/
+VOID
+MmMemLibInternalFreeMmramRanges (
+ VOID
+ )
+{
+ if (mMmMemLibInternalMmramRanges != NULL) {
+ FreePool (mMmMemLibInternalMmramRanges);
+ }
+}
+
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