The
Quark_EDKII_v1.1.0/IA32FamilyCpuBasePkg/CpuArchDxe
driver provides the following capability in its implementation of
EFI_CPU_ARCH_PROTOCOL: whenever the SetMemoryAttributes() member is used
(directly, or indirectly via gDS->SetMemorySpaceAttributes()) to change
MTRR settings, the complete set of settings is immediately reflected to an
AcpiNVS memory block.
(The address of said block is published via a dynamic PCD.)
This feature is necessary for supporting SMM-capable S3 resume, hence port
it to UefiCpuPkg. In IA32FamilyCpuBasePkg the feature is always built in;
here we make it controllable with a feature PCD.
Cc: Jeff Fan <jeff....@intel.com>
Cc: Chen Fan <chen.fan.f...@cn.fujitsu.com>
Cc: Jordan Justen <jordan.l.jus...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <ler...@redhat.com>
---
UefiCpuPkg/CpuDxe/CpuDxe.inf | 6 +
UefiCpuPkg/CpuDxe/MtrrSync.h | 86 ++++++++++++++
UefiCpuPkg/CpuDxe/CpuDxe.c | 17 +++
UefiCpuPkg/CpuDxe/MtrrSync.c | 118 ++++++++++++++++++++
UefiCpuPkg/UefiCpuPkg.dec | 11 ++
5 files changed, 238 insertions(+)
diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.inf b/UefiCpuPkg/CpuDxe/CpuDxe.inf
index 61bc55a..35e48e1 100644
--- a/UefiCpuPkg/CpuDxe/CpuDxe.inf
+++ b/UefiCpuPkg/CpuDxe/CpuDxe.inf
@@ -52,6 +52,8 @@
CpuGdt.h
CpuMp.c
CpuMp.h
+ MtrrSync.c
+ MtrrSync.h
[Sources.IA32]
Ia32/CpuAsm.asm | MSFT
@@ -80,6 +82,10 @@
[Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuApStackSize ## CONSUMES
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuMtrrTableAddress ##
SOMETIMES_PRODUCES
+
+[FeaturePcd]
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuSyncMtrrToAcpiNvs
[Depex]
TRUE
diff --git a/UefiCpuPkg/CpuDxe/MtrrSync.h b/UefiCpuPkg/CpuDxe/MtrrSync.h
new file mode 100644
index 0000000..1c20a32
--- /dev/null
+++ b/UefiCpuPkg/CpuDxe/MtrrSync.h
@@ -0,0 +1,86 @@
+/** @file
+
+ Include file for MTRR synchronzation.
+
+ Copyright (C) 2015, Red Hat, Inc.
+ Copyright (c) 2013-2015 Intel Corporation.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ Module Name: MtrrSync.h
+
+**/
+
+#ifndef _EFI_MTRR_SYNC_H_
+#define _EFI_MTRR_SYNC_H_
+
+#include <Library/MtrrLib.h>
+
+extern MTRR_SETTINGS *mMtrrTable;
+
+/**
+ Initialize memory region for MTRR data.
+
+ This function allocates ACPI NVS memory for MTRR data, and fills the region
+ with current MTRR data. Each time MTRRs are written, this memory region
+ will be updated accordingly.
+
+**/
+VOID
+InitializeMtrrData (
+ VOID
+ );
+
+/**
+ Synchronzies up the MTRR values with BSP for calling processor.
+
+ This function synchronzies up the MTRR values with BSP for calling processor.
+
+ @param Buffer Mtrr table address.
+
+**/
+VOID
+EFIAPI
+LoadMtrrData (
+ VOID *Buffer
+ );
+
+/**
+ Allocate EfiACPIMemoryNVS below 4G memory address.
+
+ This function allocates EfiACPIMemoryNVS below 4G memory address.
+
+ @param Size Size of memory to allocate.
+
+ @return Allocated address for output.
+
+**/
+VOID*
+AllocateAcpiNvsMemoryBelow4G (
+ IN UINTN Size
+ );
+#endif
diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.c b/UefiCpuPkg/CpuDxe/CpuDxe.c
index c9df4e1..3d11807 100644
--- a/UefiCpuPkg/CpuDxe/CpuDxe.c
+++ b/UefiCpuPkg/CpuDxe/CpuDxe.c
@@ -14,6 +14,7 @@
#include "CpuDxe.h"
#include "CpuMp.h"
+#include "MtrrSync.h"
//
// Global Variables
@@ -405,6 +406,14 @@ CpuSetMemoryAttributes (
CacheType
);
+ if (!RETURN_ERROR (Status)) {
+ if (FeaturePcdGet (PcdCpuSyncMtrrToAcpiNvs)) {
+ //
+ // Sync saved MTRR settings
+ //
+ MtrrGetAllMtrrs (mMtrrTable);
+ }
+ }
return (EFI_STATUS) Status;
}
@@ -870,6 +879,14 @@ InitializeCpu (
//
ProgramVirtualWireMode ();
+ if (FeaturePcdGet (PcdCpuSyncMtrrToAcpiNvs)) {
+ //
+ // Allocates ACPI NVS memory for MTRR data.
+ //
+ InitializeMtrrData ();
+ MtrrGetAllMtrrs (mMtrrTable);
+ }
+
//
// Install CPU Architectural Protocol
//
diff --git a/UefiCpuPkg/CpuDxe/MtrrSync.c b/UefiCpuPkg/CpuDxe/MtrrSync.c
new file mode 100644
index 0000000..8538014
--- /dev/null
+++ b/UefiCpuPkg/CpuDxe/MtrrSync.c
@@ -0,0 +1,118 @@
+/** @file
+
+ Code for MTRR synchronzation.
+
+ Copyright (C) 2015, Red Hat, Inc.
+ Copyright (c) 2013-2015 Intel Corporation.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ Module Name: MtrrSync.c
+
+**/
+
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+
+#include "MtrrSync.h"
+
+MTRR_SETTINGS *mMtrrTable;
+
+/**
+ Initialize memory region for MTRR data.
+
+ This function allocates ACPI NVS memory for MTRR data.
+ Each time MTRRs are written, this memory region will be updated accordingly.
+
+**/
+VOID
+InitializeMtrrData (
+ VOID
+ )
+{
+ //
+ // Allocate memory for fixed MTRRs, variable MTRRs and MTRR_DEF_TYPE
+ //
+ mMtrrTable = AllocateAcpiNvsMemoryBelow4G (sizeof (MTRR_SETTINGS));
+
+ PcdSet64 (PcdCpuMtrrTableAddress, (UINT64) (UINTN) mMtrrTable);
+}
+
+/**
+ Synchronzies up the MTRR values with BSP for calling processor.
+
+ This function synchronzies up the MTRR values with BSP for calling processor.
+
+ @param Buffer Mtrr table address.
+
+**/
+VOID
+EFIAPI
+LoadMtrrData (
+ VOID *Buffer
+ )
+{
+ MtrrSetAllMtrrs (Buffer);
+}
+
+/**
+ Allocate EfiACPIMemoryNVS below 4G memory address.
+
+ This function allocates EfiACPIMemoryNVS below 4G memory address.
+
+ @param Size Size of memory to allocate.
+
+ @return Allocated address for output.
+
+**/
+VOID*
+AllocateAcpiNvsMemoryBelow4G (
+ IN UINTN Size
+ )
+{
+ UINTN Pages;
+ EFI_PHYSICAL_ADDRESS Address;
+ EFI_STATUS Status;
+ VOID* Buffer;
+
+ Pages = EFI_SIZE_TO_PAGES (Size);
+ Address = 0xffffffff;
+
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ Pages,
+ &Address
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ Buffer = (VOID *) (UINTN) Address;
+ ZeroMem (Buffer, Size);
+
+ return Buffer;
+}
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 14a0bf2..5297c3b 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -62,5 +62,16 @@
# @Prompt Configure stack size for Application Processor (AP)
gUefiCpuPkgTokenSpaceGuid.PcdCpuApStackSize|0x8000|UINT32|0x00000003
+[PcdsFeatureFlag]
+ ## This flag controls whether the EFI_CPU_ARCH_PROTOCOL implementation
+ # reflects the updated MTRR settings to a persistent (AcpiNVS) memory block.
+ # @Prompt Keep MTRR settings reflected to an AcpiNVS memory block
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuSyncMtrrToAcpiNvs|FALSE|BOOLEAN|0x00000004
+
+[PcdsDynamic, PcdsDynamicEx]
+ ## If PcdCpuSyncMtrrToAcpiNvs is TRUE, the PCD below will be set to the
+ # address of the AcpiNVS memory block in question.
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuMtrrTableAddress|0x0|UINT64|0x00000005
+
[UserExtensions.TianoCore."ExtraFiles"]
UefiCpuPkgExtra.uni
--
1.8.3.1
------------------------------------------------------------------------------
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