diff options
| -rw-r--r-- | OvmfPkg/Include/Protocol/SevMemoryAcceptance.h | 43 | ||||
| -rw-r--r-- | OvmfPkg/OvmfPkg.dec | 1 |
2 files changed, 44 insertions, 0 deletions
diff --git a/OvmfPkg/Include/Protocol/SevMemoryAcceptance.h b/OvmfPkg/Include/Protocol/SevMemoryAcceptance.h new file mode 100644 index 0000000000..c5ea3f383a --- /dev/null +++ b/OvmfPkg/Include/Protocol/SevMemoryAcceptance.h @@ -0,0 +1,43 @@ +/** @file
+ The file provides the protocol that disables the behavior that all memory
+ gets accepted at ExitBootServices(). This protocol is only meant to be called
+ by the OS loader, and not EDK2 itself. The SEV naming is due to the
+ coincidence that only SEV-SNP needs this protocol, since SEV-SNP Linux
+ support was released before it had support for unaccepted memory. The
+ technology enablement thus does not strictly imply support for the unaccepted
+ memory type.
+
+ Copyright (c) 2023, Google LLC. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef SEV_MEMORY_ACCEPTANCE_H_
+#define SEV_MEMORY_ACCEPTANCE_H_
+
+#define OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL_GUID \
+ {0xc5a010fe, \
+ 0x38a7, \
+ 0x4531, \
+ {0x8a, 0x4a, 0x05, 0x00, 0xd2, 0xfd, 0x16, 0x49}}
+
+typedef struct _OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL
+ OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL;
+
+/**
+ @param This A pointer to a OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL.
+**/
+typedef
+ EFI_STATUS
+(EFIAPI *OVMF_SEV_ALLOW_UNACCEPTED_MEMORY)(
+ IN OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL *This
+ );
+
+///
+/// The OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL allows the OS loader to
+/// indicate to EDK2 that ExitBootServices should not accept all memory.
+///
+struct _OVMF_SEV_MEMORY_ACCEPTANCE_PROTOCOL {
+ OVMF_SEV_ALLOW_UNACCEPTED_MEMORY AllowUnacceptedMemory;
+};
+
+#endif
diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index 1b521f2604..a22eb246c6 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -184,6 +184,7 @@ gEfiLegacyInterruptProtocolGuid = {0x31ce593d, 0x108a, 0x485d, {0xad, 0xb2, 0x78, 0xf2, 0x1f, 0x29, 0x66, 0xbe}}
gEfiVgaMiniPortProtocolGuid = {0xc7735a2f, 0x88f5, 0x4882, {0xae, 0x63, 0xfa, 0xac, 0x8c, 0x8b, 0x86, 0xb3}}
gOvmfLoadedX86LinuxKernelProtocolGuid = {0xa3edc05d, 0xb618, 0x4ff6, {0x95, 0x52, 0x76, 0xd7, 0x88, 0x63, 0x43, 0xc8}}
+ gOvmfSevMemoryAcceptanceProtocolGuid = {0xc5a010fe, 0x38a7, 0x4531, {0x8a, 0x4a, 0x05, 0x00, 0xd2, 0xfd, 0x16, 0x49}}
gQemuAcpiTableNotifyProtocolGuid = {0x928939b2, 0x4235, 0x462f, {0x95, 0x80, 0xf6, 0xa2, 0xb2, 0xc2, 0x1a, 0x4f}}
gEfiMpInitLibMpDepProtocolGuid = {0xbb00a5ca, 0x8ce, 0x462f, {0xa5, 0x37, 0x43, 0xc7, 0x4a, 0x82, 0x5c, 0xa4}}
gEfiMpInitLibUpDepProtocolGuid = {0xa9e7cef1, 0x5682, 0x42cc, {0xb1, 0x23, 0x99, 0x30, 0x97, 0x3f, 0x4a, 0x9f}}
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