Add a simple protocol that enables the use of the unaccepted memory
type. Must be called before ExitBootServices to be effective.
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: James Bottomley <j...@linux.ibm.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Tom Lendacky <thomas.lenda...@amd.com>
Cc: Ard Biesheuvel <a...@kernel.org>
Signed-off-by: Dionna Glaze <dionnagl...@google.com>
---
MdeModulePkg/Core/Dxe/DxeMain.h | 22 ++++++++++++
MdeModulePkg/Core/Dxe/DxeMain.inf | 3 +-
MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c | 5 +++
MdeModulePkg/Core/Dxe/Mem/Page.c | 35 ++++++++++++++++++++
MdeModulePkg/MdeModulePkg.dec | 3 ++
5 files changed, 67 insertions(+), 1 deletion(-)
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.h b/MdeModulePkg/Core/Dxe/DxeMain.h
index ac943c87a3..5f0114b04f 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.h
+++ b/MdeModulePkg/Core/Dxe/DxeMain.h
@@ -2708,6 +2708,28 @@ CoreResolveUnacceptedMemory (
VOID
);
+
+typedef struct _ENABLE_UNACCEPTED_MEMORY_PROTOCOL
+ ENABLE_UNACCEPTED_MEMORY_PROTOCOL;
+
+typedef EFI_STATUS (EFIAPI *ENABLE_UNACCEPTED_MEMORY)(
+ IN ENABLE_UNACCEPTED_MEMORY_PROTOCOL *
+ );
+
+struct _ENABLE_UNACCEPTED_MEMORY_PROTOCOL {
+ ENABLE_UNACCEPTED_MEMORY Enable;
+};
+
+extern EFI_GUID gEnableUnacceptedMemoryProtocolGuid;
+
+/**
+ Implement the protocol for enabling unaccepted memory.
+ **/
+VOID
+InstallEnableUnacceptedMemoryProtocol (
+ VOID
+ );
+
/**
Install MemoryAttributesTable on memory allocation.
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.inf
b/MdeModulePkg/Core/Dxe/DxeMain.inf
index deb8bb2ba8..39dcac98bb 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.inf
+++ b/MdeModulePkg/Core/Dxe/DxeMain.inf
@@ -122,6 +122,7 @@
gEfiMemoryAttributesTableGuid ## SOMETIMES_PRODUCES ##
SystemTable
gEfiEndOfDxeEventGroupGuid ## SOMETIMES_CONSUMES ##
Event
gEfiHobMemoryAllocStackGuid ## SOMETIMES_CONSUMES ##
SystemTable
+ gEnableUnacceptedMemoryProtocolGuid ## PRODUCES ##
GUID # Install protocol
[Ppis]
gEfiVectorHandoffInfoPpiGuid ## UNDEFINED # HOB
@@ -187,7 +188,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFwVolDxeMaxEncapsulationDepth ##
CONSUMES
- gEfiMdeModulePkgTokenSpaceGuid.PcdEnableUnacceptedMemory ##
CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableUnacceptedMemory ##
CONSUMES ## SOMETIMES_PRODUCES
# [Hob]
# RESOURCE_DESCRIPTOR ## CONSUMES
diff --git a/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
b/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
index 8d1de32fe7..bc1a8ab6b2 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
+++ b/MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c
@@ -354,6 +354,11 @@ DxeMain (
Status = CoreInstallConfigurationTable (&gEfiMemoryTypeInformationGuid,
&gMemoryTypeInformation);
ASSERT_EFI_ERROR (Status);
+ //
+ // Install unaccepted memory configuration protocol
+ //
+ InstallEnableUnacceptedMemoryProtocol();
+
//
// If Loading modules At fixed address feature is enabled, install Load
moduels at fixed address
// Configuration Table so that user could easily to retrieve the top address
to load Dxe and PEI
diff --git a/MdeModulePkg/Core/Dxe/Mem/Page.c b/MdeModulePkg/Core/Dxe/Mem/Page.c
index cbebe62a28..10e152d80d 100644
--- a/MdeModulePkg/Core/Dxe/Mem/Page.c
+++ b/MdeModulePkg/Core/Dxe/Mem/Page.c
@@ -96,6 +96,14 @@ EFI_MEMORY_TYPE_INFORMATION
gMemoryTypeInformation[EfiMaxMemoryType + 1] = {
//
GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN gLoadFixedAddressCodeMemoryReady =
FALSE;
+EFI_STATUS EFIAPI CoreEnableUnacceptedMemory(IN
ENABLE_UNACCEPTED_MEMORY_PROTOCOL *);
+
+struct {
+ ENABLE_UNACCEPTED_MEMORY enable;
+} mEnableUnacceptedMemoryProtocol = {
+ CoreEnableUnacceptedMemory,
+};
+
/**
Enter critical section by gaining lock on gMemoryLock.
@@ -2205,6 +2213,33 @@ CoreResolveUnacceptedMemory (
return AcceptAllUnacceptedMemory(AcceptMemory);
}
+EFI_STATUS
+EFIAPI
+CoreEnableUnacceptedMemory (
+ IN ENABLE_UNACCEPTED_MEMORY_PROTOCOL *This
+ )
+{
+ return PcdSetBoolS(PcdEnableUnacceptedMemory, TRUE);
+}
+
+VOID
+InstallEnableUnacceptedMemoryProtocol (
+ VOID
+ )
+{
+ EFI_HANDLE Handle;
+ EFI_STATUS Status;
+
+ Handle = NULL;
+ Status = CoreInstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEnableUnacceptedMemoryProtocolGuid,
+ &mEnableUnacceptedMemoryProtocol,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+}
+
/**
Make sure the memory map is following all the construction rules,
it is the last time to check memory map error before exit boot services.
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index dd07b3725a..ce72c06a93 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -244,6 +244,9 @@
gEdkiiPerformanceMeasurementProtocolGuid = { 0xc85d06be, 0x5f75,
0x48ce, { 0xa8, 0x0f, 0x12, 0x36, 0xba, 0x3b, 0x87, 0xb1 } }
gEdkiiSmmPerformanceMeasurementProtocolGuid = { 0xd56b6d73, 0x1a7b,
0x4015, { 0x9b, 0xb4, 0x7b, 0x07, 0x17, 0x29, 0xed, 0x24 } }
+ ## Bootloader protocol Guid for enabling unaccepted memory support.
+ gEnableUnacceptedMemoryProtocolGuid = { 0xc5a010fe, 0x38a7, 0x4531, { 0x8a,
0x4a, 0x05, 0x00, 0xd2, 0xfd, 0x16, 0x49 } }
+
## Guid is defined for CRC32 encapsulation scheme.
# Include/Guid/Crc32GuidedSectionExtraction.h
gEfiCrc32GuidedSectionExtractionGuid = { 0xFC1BCDB0, 0x7D31, 0x49aa, {0x93,
0x6A, 0xA4, 0x60, 0x0D, 0x9D, 0xD0, 0x83 } }
--
2.37.3.998.g577e59143f-goog
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