From: Sean Brogan <sean.brogan@microsoft.com>
Add the Memory Attribute Protocol definition, which was adopted and
included in version 2.10 of the UEFI specification.
Taken from Project Mu's mu_basecore repository.
Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3519
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
MdePkg/Include/Protocol/MemoryAttribute.h | 131 ++++++++++++++++++++
MdePkg/MdePkg.dec | 3 +
2 files changed, 134 insertions(+)
diff --git a/MdePkg/Include/Protocol/MemoryAttribute.h b/MdePkg/Include/Protocol/MemoryAttribute.h
new file mode 100644
index 000000000000..b33138732ad1
--- /dev/null
+++ b/MdePkg/Include/Protocol/MemoryAttribute.h
@@ -0,0 +1,131 @@
+/** @file
+
+ EFI Memory Attribute Protocol provides retrieval and update service
+ for memory attributes in EFI environment.
+
+ Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __EFI_MEMORY_ATTRIBUTE_H__
+#define __EFI_MEMORY_ATTRIBUTE_H__
+
+#define EFI_MEMORY_ATTRIBUTE_PROTOCOL_GUID \
+ { \
+ 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1, 0x92, 0xbf, 0x1d, 0x57, 0xd0, 0xb1, 0x89 } \
+ }
+
+typedef struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL EFI_MEMORY_ATTRIBUTE_PROTOCOL;
+
+/**
+ This function set given attributes of the memory region specified by
+ BaseAddress and Length.
+
+ The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and EFI_MEMORY_RO.
+
+ @param This The EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to set for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were set for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be set together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not supported for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SET_MEMORY_ATTRIBUTES)(
+ IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function clears given attributes of the memory region specified by
+ BaseAddress and Length.
+
+ The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and EFI_MEMORY_RO.
+
+ @param This The EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to clear for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were cleared for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be cleared together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not supported for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_CLEAR_MEMORY_ATTRIBUTES)(
+ IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function retrieves the attributes of the memory region specified by
+ BaseAddress and Length. If different attributes are got from different part
+ of the memory region, EFI_NO_MAPPING will be returned.
+
+ @param This The EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes Pointer to attributes returned.
+
+ @retval EFI_SUCCESS The attributes got for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes is NULL.
+ @retval EFI_NO_MAPPING Attributes are not consistent cross the memory
+ region.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_GET_MEMORY_ATTRIBUTES)(
+ IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ OUT UINT64 *Attributes
+ );
+
+///
+/// EFI Memory Attribute Protocol provides services to retrieve or update
+/// attribute of memory in the EFI environment.
+///
+struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL {
+ EFI_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
+ EFI_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
+ EFI_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
+};
+
+extern EFI_GUID gEfiMemoryAttributeProtocolGuid;
+
+#endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 3d08f20d15b0..a8658403c8fd 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1915,6 +1915,9 @@ [Protocols]
## Include/Protocol/RedfishDiscover.h
gEfiRedfishDiscoverProtocolGuid = { 0x5db12509, 0x4550, 0x4347, { 0x96, 0xb3, 0x73, 0xc0, 0xff, 0x6e, 0x86, 0x9f }}
+ ## Include/Protocol/MemoryAttribute.h
+ gEfiMemoryAttributeProtocolGuid = { 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1, 0x92, 0xbf, 0x1d, 0x57, 0xd0, 0xb1, 0x89 }}
+
#
# Protocols defined in Shell2.0
#
--
2.39.0
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-=-=-=-=-=-=-=-=-=-=-=-Ard:
I check this protocol definition in UEFI2.10 spec. GetMemoryAttributes and
SetMemoryAttributes API return status include EFI_OUT_OF_RESOURCES and
EFI_ACCESS_DENIED. But, they are missing in this patch. Can you help
confirm?
Thanks
Liming
> -----邮件原件-----
> 发件人: Ard Biesheuvel <ardb@kernel.org>
> 发送时间: 2023年2月1日 6:36
> 收件人: devel@edk2.groups.io
> 抄送: Ard Biesheuvel <ardb@kernel.org>; Michael Kinney
> <michael.d.kinney@intel.com>; Liming Gao <gaoliming@byosoft.com.cn>;
> Jiewen Yao <jiewen.yao@intel.com>; Michael Kubacki
> <michael.kubacki@microsoft.com>; Sean Brogan
> <sean.brogan@microsoft.com>; Rebecca Cran <quic_rcran@quicinc.com>;
> Leif Lindholm <quic_llindhol@quicinc.com>; Sami Mujawar
> <sami.mujawar@arm.com>
> 主题: [PATCH 1/4] MdePkg: Add Memory Attribute Protocol definition
>
> From: Sean Brogan <sean.brogan@microsoft.com>
>
> Add the Memory Attribute Protocol definition, which was adopted and
> included in version 2.10 of the UEFI specification.
>
> Taken from Project Mu's mu_basecore repository.
>
> Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3519
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
> MdePkg/Include/Protocol/MemoryAttribute.h | 131
> ++++++++++++++++++++
> MdePkg/MdePkg.dec | 3 +
> 2 files changed, 134 insertions(+)
>
> diff --git a/MdePkg/Include/Protocol/MemoryAttribute.h
> b/MdePkg/Include/Protocol/MemoryAttribute.h
> new file mode 100644
> index 000000000000..b33138732ad1
> --- /dev/null
> +++ b/MdePkg/Include/Protocol/MemoryAttribute.h
> @@ -0,0 +1,131 @@
> +/** @file
>
> +
>
> + EFI Memory Attribute Protocol provides retrieval and update service
>
> + for memory attributes in EFI environment.
>
> +
>
> + Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
>
> +
>
> +**/
>
> +
>
> +#ifndef __EFI_MEMORY_ATTRIBUTE_H__
>
> +#define __EFI_MEMORY_ATTRIBUTE_H__
>
> +
>
> +#define EFI_MEMORY_ATTRIBUTE_PROTOCOL_GUID \
>
> + { \
>
> + 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1, 0x92, 0xbf, 0x1d, 0x57, 0xd0,
0xb1,
> 0x89 } \
>
> + }
>
> +
>
> +typedef struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL
> EFI_MEMORY_ATTRIBUTE_PROTOCOL;
>
> +
>
> +/**
>
> + This function set given attributes of the memory region specified by
>
> + BaseAddress and Length.
>
> +
>
> + The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and
> EFI_MEMORY_RO.
>
> +
>
> + @param This The
> EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
>
> + @param BaseAddress The physical address that is the start
> address of
>
> + a memory region.
>
> + @param Length The size in bytes of the memory region.
>
> + @param Attributes The bit mask of attributes to set for the
> memory
>
> + region.
>
> +
>
> + @retval EFI_SUCCESS The attributes were set for the
> memory region.
>
> + @retval EFI_INVALID_PARAMETER Length is zero.
>
> + Attributes specified an illegal
> combination of
>
> + attributes that cannot be set
> together.
>
> + @retval EFI_UNSUPPORTED The processor does not support one
> or more
>
> + bytes of the memory resource range
> specified
>
> + by BaseAddress and Length.
>
> + The bit mask of attributes is not
> supported for
>
> + the memory resource range
> specified by
>
> + BaseAddress and Length.
>
> +
>
> +**/
>
> +typedef
>
> +EFI_STATUS
>
> +(EFIAPI *EFI_SET_MEMORY_ATTRIBUTES)(
>
> + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
>
> + IN EFI_PHYSICAL_ADDRESS BaseAddress,
>
> + IN UINT64 Length,
>
> + IN UINT64 Attributes
>
> + );
>
> +
>
> +/**
>
> + This function clears given attributes of the memory region specified by
>
> + BaseAddress and Length.
>
> +
>
> + The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and
> EFI_MEMORY_RO.
>
> +
>
> + @param This The
> EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
>
> + @param BaseAddress The physical address that is the start
> address of
>
> + a memory region.
>
> + @param Length The size in bytes of the memory region.
>
> + @param Attributes The bit mask of attributes to clear for the
> memory
>
> + region.
>
> +
>
> + @retval EFI_SUCCESS The attributes were cleared for the
> memory region.
>
> + @retval EFI_INVALID_PARAMETER Length is zero.
>
> + Attributes specified an illegal
> combination of
>
> + attributes that cannot be cleared
> together.
>
> + @retval EFI_UNSUPPORTED The processor does not support one
> or more
>
> + bytes of the memory resource range
> specified
>
> + by BaseAddress and Length.
>
> + The bit mask of attributes is not
> supported for
>
> + the memory resource range
> specified by
>
> + BaseAddress and Length.
>
> +
>
> +**/
>
> +typedef
>
> +EFI_STATUS
>
> +(EFIAPI *EFI_CLEAR_MEMORY_ATTRIBUTES)(
>
> + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
>
> + IN EFI_PHYSICAL_ADDRESS BaseAddress,
>
> + IN UINT64 Length,
>
> + IN UINT64 Attributes
>
> + );
>
> +
>
> +/**
>
> + This function retrieves the attributes of the memory region specified
by
>
> + BaseAddress and Length. If different attributes are got from different
part
>
> + of the memory region, EFI_NO_MAPPING will be returned.
>
> +
>
> + @param This The
> EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
>
> + @param BaseAddress The physical address that is the start
> address of
>
> + a memory region.
>
> + @param Length The size in bytes of the memory region.
>
> + @param Attributes Pointer to attributes returned.
>
> +
>
> + @retval EFI_SUCCESS The attributes got for the memory
> region.
>
> + @retval EFI_INVALID_PARAMETER Length is zero.
>
> + Attributes is NULL.
>
> + @retval EFI_NO_MAPPING Attributes are not consistent cross
> the memory
>
> + region.
>
> + @retval EFI_UNSUPPORTED The processor does not support one
> or more
>
> + bytes of the memory resource range
> specified
>
> + by BaseAddress and Length.
>
> +
>
> +**/
>
> +typedef
>
> +EFI_STATUS
>
> +(EFIAPI *EFI_GET_MEMORY_ATTRIBUTES)(
>
> + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
>
> + IN EFI_PHYSICAL_ADDRESS BaseAddress,
>
> + IN UINT64 Length,
>
> + OUT UINT64 *Attributes
>
> + );
>
> +
>
> +///
>
> +/// EFI Memory Attribute Protocol provides services to retrieve or update
>
> +/// attribute of memory in the EFI environment.
>
> +///
>
> +struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL {
>
> + EFI_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
>
> + EFI_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
>
> + EFI_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
>
> +};
>
> +
>
> +extern EFI_GUID gEfiMemoryAttributeProtocolGuid;
>
> +
>
> +#endif
>
> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> index 3d08f20d15b0..a8658403c8fd 100644
> --- a/MdePkg/MdePkg.dec
> +++ b/MdePkg/MdePkg.dec
> @@ -1915,6 +1915,9 @@ [Protocols]
> ## Include/Protocol/RedfishDiscover.h
>
> gEfiRedfishDiscoverProtocolGuid = { 0x5db12509, 0x4550, 0x4347,
> { 0x96, 0xb3, 0x73, 0xc0, 0xff, 0x6e, 0x86, 0x9f }}
>
>
>
> + ## Include/Protocol/MemoryAttribute.h
>
> + gEfiMemoryAttributeProtocolGuid = { 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1,
> 0x92, 0xbf, 0x1d, 0x57, 0xd0, 0xb1, 0x89 }}
>
> +
>
> #
>
> # Protocols defined in Shell2.0
>
> #
>
> --
> 2.39.0
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-=-=-=-=-=-=-=-=-=-=-=-
On Thu, 2 Feb 2023 at 04:19, gaoliming via groups.io
<gaoliming=byosoft.com.cn@groups.io> wrote:
>
> Ard:
> I check this protocol definition in UEFI2.10 spec. GetMemoryAttributes and
> SetMemoryAttributes API return status include EFI_OUT_OF_RESOURCES and
> EFI_ACCESS_DENIED. But, they are missing in this patch. Can you help
> confirm?
>
I just took the Project Mu version without realizing this - I can fix
that up in v2.
> > -----邮件原件-----
> > 发件人: Ard Biesheuvel <ardb@kernel.org>
> > 发送时间: 2023年2月1日 6:36
> > 收件人: devel@edk2.groups.io
> > 抄送: Ard Biesheuvel <ardb@kernel.org>; Michael Kinney
> > <michael.d.kinney@intel.com>; Liming Gao <gaoliming@byosoft.com.cn>;
> > Jiewen Yao <jiewen.yao@intel.com>; Michael Kubacki
> > <michael.kubacki@microsoft.com>; Sean Brogan
> > <sean.brogan@microsoft.com>; Rebecca Cran <quic_rcran@quicinc.com>;
> > Leif Lindholm <quic_llindhol@quicinc.com>; Sami Mujawar
> > <sami.mujawar@arm.com>
> > 主题: [PATCH 1/4] MdePkg: Add Memory Attribute Protocol definition
> >
> > From: Sean Brogan <sean.brogan@microsoft.com>
> >
> > Add the Memory Attribute Protocol definition, which was adopted and
> > included in version 2.10 of the UEFI specification.
> >
> > Taken from Project Mu's mu_basecore repository.
> >
> > Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3519
> > Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> > ---
> > MdePkg/Include/Protocol/MemoryAttribute.h | 131
> > ++++++++++++++++++++
> > MdePkg/MdePkg.dec | 3 +
> > 2 files changed, 134 insertions(+)
> >
> > diff --git a/MdePkg/Include/Protocol/MemoryAttribute.h
> > b/MdePkg/Include/Protocol/MemoryAttribute.h
> > new file mode 100644
> > index 000000000000..b33138732ad1
> > --- /dev/null
> > +++ b/MdePkg/Include/Protocol/MemoryAttribute.h
> > @@ -0,0 +1,131 @@
> > +/** @file
> >
> > +
> >
> > + EFI Memory Attribute Protocol provides retrieval and update service
> >
> > + for memory attributes in EFI environment.
> >
> > +
> >
> > + Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> >
> > + SPDX-License-Identifier: BSD-2-Clause-Patent
> >
> > +
> >
> > +**/
> >
> > +
> >
> > +#ifndef __EFI_MEMORY_ATTRIBUTE_H__
> >
> > +#define __EFI_MEMORY_ATTRIBUTE_H__
> >
> > +
> >
> > +#define EFI_MEMORY_ATTRIBUTE_PROTOCOL_GUID \
> >
> > + { \
> >
> > + 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1, 0x92, 0xbf, 0x1d, 0x57, 0xd0,
> 0xb1,
> > 0x89 } \
> >
> > + }
> >
> > +
> >
> > +typedef struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL
> > EFI_MEMORY_ATTRIBUTE_PROTOCOL;
> >
> > +
> >
> > +/**
> >
> > + This function set given attributes of the memory region specified by
> >
> > + BaseAddress and Length.
> >
> > +
> >
> > + The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and
> > EFI_MEMORY_RO.
> >
> > +
> >
> > + @param This The
> > EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
> >
> > + @param BaseAddress The physical address that is the start
> > address of
> >
> > + a memory region.
> >
> > + @param Length The size in bytes of the memory region.
> >
> > + @param Attributes The bit mask of attributes to set for the
> > memory
> >
> > + region.
> >
> > +
> >
> > + @retval EFI_SUCCESS The attributes were set for the
> > memory region.
> >
> > + @retval EFI_INVALID_PARAMETER Length is zero.
> >
> > + Attributes specified an illegal
> > combination of
> >
> > + attributes that cannot be set
> > together.
> >
> > + @retval EFI_UNSUPPORTED The processor does not support one
> > or more
> >
> > + bytes of the memory resource range
> > specified
> >
> > + by BaseAddress and Length.
> >
> > + The bit mask of attributes is not
> > supported for
> >
> > + the memory resource range
> > specified by
> >
> > + BaseAddress and Length.
> >
> > +
> >
> > +**/
> >
> > +typedef
> >
> > +EFI_STATUS
> >
> > +(EFIAPI *EFI_SET_MEMORY_ATTRIBUTES)(
> >
> > + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
> >
> > + IN EFI_PHYSICAL_ADDRESS BaseAddress,
> >
> > + IN UINT64 Length,
> >
> > + IN UINT64 Attributes
> >
> > + );
> >
> > +
> >
> > +/**
> >
> > + This function clears given attributes of the memory region specified by
> >
> > + BaseAddress and Length.
> >
> > +
> >
> > + The valid Attributes is EFI_MEMORY_RP, EFI_MEMORY_XP, and
> > EFI_MEMORY_RO.
> >
> > +
> >
> > + @param This The
> > EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
> >
> > + @param BaseAddress The physical address that is the start
> > address of
> >
> > + a memory region.
> >
> > + @param Length The size in bytes of the memory region.
> >
> > + @param Attributes The bit mask of attributes to clear for the
> > memory
> >
> > + region.
> >
> > +
> >
> > + @retval EFI_SUCCESS The attributes were cleared for the
> > memory region.
> >
> > + @retval EFI_INVALID_PARAMETER Length is zero.
> >
> > + Attributes specified an illegal
> > combination of
> >
> > + attributes that cannot be cleared
> > together.
> >
> > + @retval EFI_UNSUPPORTED The processor does not support one
> > or more
> >
> > + bytes of the memory resource range
> > specified
> >
> > + by BaseAddress and Length.
> >
> > + The bit mask of attributes is not
> > supported for
> >
> > + the memory resource range
> > specified by
> >
> > + BaseAddress and Length.
> >
> > +
> >
> > +**/
> >
> > +typedef
> >
> > +EFI_STATUS
> >
> > +(EFIAPI *EFI_CLEAR_MEMORY_ATTRIBUTES)(
> >
> > + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
> >
> > + IN EFI_PHYSICAL_ADDRESS BaseAddress,
> >
> > + IN UINT64 Length,
> >
> > + IN UINT64 Attributes
> >
> > + );
> >
> > +
> >
> > +/**
> >
> > + This function retrieves the attributes of the memory region specified
> by
> >
> > + BaseAddress and Length. If different attributes are got from different
> part
> >
> > + of the memory region, EFI_NO_MAPPING will be returned.
> >
> > +
> >
> > + @param This The
> > EFI_MEMORY_ATTRIBUTE_PROTOCOL instance.
> >
> > + @param BaseAddress The physical address that is the start
> > address of
> >
> > + a memory region.
> >
> > + @param Length The size in bytes of the memory region.
> >
> > + @param Attributes Pointer to attributes returned.
> >
> > +
> >
> > + @retval EFI_SUCCESS The attributes got for the memory
> > region.
> >
> > + @retval EFI_INVALID_PARAMETER Length is zero.
> >
> > + Attributes is NULL.
> >
> > + @retval EFI_NO_MAPPING Attributes are not consistent cross
> > the memory
> >
> > + region.
> >
> > + @retval EFI_UNSUPPORTED The processor does not support one
> > or more
> >
> > + bytes of the memory resource range
> > specified
> >
> > + by BaseAddress and Length.
> >
> > +
> >
> > +**/
> >
> > +typedef
> >
> > +EFI_STATUS
> >
> > +(EFIAPI *EFI_GET_MEMORY_ATTRIBUTES)(
> >
> > + IN EFI_MEMORY_ATTRIBUTE_PROTOCOL *This,
> >
> > + IN EFI_PHYSICAL_ADDRESS BaseAddress,
> >
> > + IN UINT64 Length,
> >
> > + OUT UINT64 *Attributes
> >
> > + );
> >
> > +
> >
> > +///
> >
> > +/// EFI Memory Attribute Protocol provides services to retrieve or update
> >
> > +/// attribute of memory in the EFI environment.
> >
> > +///
> >
> > +struct _EFI_MEMORY_ATTRIBUTE_PROTOCOL {
> >
> > + EFI_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
> >
> > + EFI_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
> >
> > + EFI_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
> >
> > +};
> >
> > +
> >
> > +extern EFI_GUID gEfiMemoryAttributeProtocolGuid;
> >
> > +
> >
> > +#endif
> >
> > diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> > index 3d08f20d15b0..a8658403c8fd 100644
> > --- a/MdePkg/MdePkg.dec
> > +++ b/MdePkg/MdePkg.dec
> > @@ -1915,6 +1915,9 @@ [Protocols]
> > ## Include/Protocol/RedfishDiscover.h
> >
> > gEfiRedfishDiscoverProtocolGuid = { 0x5db12509, 0x4550, 0x4347,
> > { 0x96, 0xb3, 0x73, 0xc0, 0xff, 0x6e, 0x86, 0x9f }}
> >
> >
> >
> > + ## Include/Protocol/MemoryAttribute.h
> >
> > + gEfiMemoryAttributeProtocolGuid = { 0xf4560cf6, 0x40ec, 0x4b4a, { 0xa1,
> > 0x92, 0xbf, 0x1d, 0x57, 0xd0, 0xb1, 0x89 }}
> >
> > +
> >
> > #
> >
> > # Protocols defined in Shell2.0
> >
> > #
> >
> > --
> > 2.39.0
>
>
>
>
>
>
>
>
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