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| author | Dun Tan <dun.tan@intel.com> | 2024-04-10 11:27:51 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-06-17 13:42:43 +0000 |
| commit | 025a95b7edfbb6ca11356ab87a300db443bd105b (patch) | |
| tree | 979042ab3607a54cea3f3149933fb23b9b207176 | |
| parent | 9fc61309bf56aa7863e36b8f418a49ca6d8364d0 (diff) | |
| download | edk2-025a95b7edfbb6ca11356ab87a300db443bd105b.tar.gz edk2-025a95b7edfbb6ca11356ab87a300db443bd105b.tar.bz2 edk2-025a95b7edfbb6ca11356ab87a300db443bd105b.zip | |
MdeModulePkg:Add new gEdkiiVariableRuntimeCacheInfoHobGuid
This commit defines VARIABLE_RUNTIME_CACHE_INFO HOB.
The HOB is used to store the address and size of the
buffer that will be used for variable runtime service
when the PcdEnableVariableRuntimeCache is TRUE.
In following patches, when PcdEnableVariableRuntimeCache
is TRUE, VariablePei module will install a callback of
gEfiPeiMemoryDiscoveredPpiGuid to allocate needed buffer
for different type cache, unblock the buffer and build HOB.
Then VariableSmmRuntimeDxe driver will consume the
gEdkiiVariableRuntimeCacheInfoHobGuid to initialize the
variable runtime cache related content.
Signed-off-by: Dun Tan <dun.tan@intel.com>
| -rw-r--r-- | MdeModulePkg/Include/Guid/VariableRuntimeCacheInfo.h | 61 | ||||
| -rw-r--r-- | MdeModulePkg/MdeModulePkg.dec | 3 |
2 files changed, 64 insertions, 0 deletions
diff --git a/MdeModulePkg/Include/Guid/VariableRuntimeCacheInfo.h b/MdeModulePkg/Include/Guid/VariableRuntimeCacheInfo.h new file mode 100644 index 0000000000..2f807b8371 --- /dev/null +++ b/MdeModulePkg/Include/Guid/VariableRuntimeCacheInfo.h @@ -0,0 +1,61 @@ +/** @file
+ This Variable Runtime Cache Info HOB is used to store the address
+ and the size of the buffer that will be used for variable runtime
+ service when the PcdEnableVariableRuntimeCache is TRUE.
+
+ Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef VARIABLE_RUNTIME_CACHE_INFO_H_
+#define VARIABLE_RUNTIME_CACHE_INFO_H_
+
+#define VARIABLE_RUNTIME_CACHE_INFO_HOB_REVISION 1
+
+#define VARIABLE_RUNTIME_CACHE_INFO_GUID \
+ { \
+ 0x0f472f7d, 0x6713, 0x4915, {0x96, 0x14, 0x5d, 0xda, 0x28, 0x40, 0x10, 0x56} \
+ }
+
+typedef struct {
+ ///
+ /// TRUE indicates GetVariable () or GetNextVariable () is being called.
+ /// When the value is FALSE, the given update (and any other pending updates)
+ /// can be flushed to the runtime cache.
+ ///
+ BOOLEAN ReadLock;
+ ///
+ /// TRUE indicates there is pending update for the given variable store needed
+ /// to be flushed to the runtime cache.
+ ///
+ BOOLEAN PendingUpdate;
+ ///
+ /// TRUE indicates all HOB variables have been flushed in flash.
+ ///
+ BOOLEAN HobFlushComplete;
+} CACHE_INFO_FLAG;
+
+typedef struct {
+ EFI_PHYSICAL_ADDRESS CacheInfoFlagBuffer;
+ ///
+ /// Base address of the runtime Hob variable cache Buffer.
+ ///
+ EFI_PHYSICAL_ADDRESS RuntimeHobCacheBuffer;
+ UINT64 RuntimeHobCachePages;
+ ///
+ /// Base address of the non-volatile variable runtime cache Buffer.
+ ///
+ EFI_PHYSICAL_ADDRESS RuntimeNvCacheBuffer;
+ UINT64 RuntimeNvCachePages;
+ ///
+ /// Base address of the volatile variable runtime cache Buffer.
+ ///
+ EFI_PHYSICAL_ADDRESS RuntimeVolatileCacheBuffer;
+ UINT64 RuntimeVolatileCachePages;
+} VARIABLE_RUNTIME_CACHE_INFO;
+
+extern EFI_GUID gEdkiiVariableRuntimeCacheInfoHobGuid;
+
+#endif
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index 02f330a453..fdd1d48c47 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -468,6 +468,9 @@ ## This GUID will be used to save MTRR_SETTINGS at EndOfDxe by LockBox and restore at S3 boot PEI phase for s3 usage.
gEdkiiS3MtrrSettingGuid = { 0xd77baa84, 0xb332, 0x4463, { 0x9f, 0x1d, 0xce, 0x81, 0x00, 0xfe, 0x7f, 0x35 }}
+ ## Include/Guid/VariableRuntimeCacheInfo.h
+ gEdkiiVariableRuntimeCacheInfoHobGuid = { 0x0f472f7d, 0x6713, 0x4915, { 0x96, 0x14, 0x5d, 0xda, 0x28, 0x40, 0x10, 0x56 }}
+
[Ppis]
## Include/Ppi/FirmwareVolumeShadowPpi.h
gEdkiiPeiFirmwareVolumeShadowPpiGuid = { 0x7dfe756c, 0xed8d, 0x4d77, {0x9e, 0xc4, 0x39, 0x9a, 0x8a, 0x81, 0x51, 0x16 } }
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