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author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-11-27 20:57:50 +0000 |
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committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-11-27 20:57:50 +0000 |
commit | 4bdccd287dc31e682d1c96dc7edd7c63fffa8ae9 (patch) | |
tree | 96d3f827c38f8cf4e85c71e484186cffe90968f9 /Nt32Pkg | |
parent | 467300641cb356d04ccbe4f21951a6a0ce5ab416 (diff) | |
download | edk2-4bdccd287dc31e682d1c96dc7edd7c63fffa8ae9.tar.gz edk2-4bdccd287dc31e682d1c96dc7edd7c63fffa8ae9.tar.bz2 edk2-4bdccd287dc31e682d1c96dc7edd7c63fffa8ae9.zip |
Update NT32 BDS to produce the MemoryTypeInformation variable
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4334 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'Nt32Pkg')
-rw-r--r-- | Nt32Pkg/PlatformBdsDxe/BdsPlatform.c | 161 | ||||
-rw-r--r-- | Nt32Pkg/PlatformBdsDxe/Generic/Bds.h | 1 | ||||
-rw-r--r-- | Nt32Pkg/PlatformBdsDxe/PlatformBdsDxe.inf | 1 |
3 files changed, 163 insertions, 0 deletions
diff --git a/Nt32Pkg/PlatformBdsDxe/BdsPlatform.c b/Nt32Pkg/PlatformBdsDxe/BdsPlatform.c index 104265c685..976c9147de 100644 --- a/Nt32Pkg/PlatformBdsDxe/BdsPlatform.c +++ b/Nt32Pkg/PlatformBdsDxe/BdsPlatform.c @@ -28,6 +28,157 @@ Abstract: CHAR16 mFirmwareVendor[] = L"TianoCore.org";
+EFI_EVENT mReadyToBootEvent;
+
+EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
+ { EfiACPIReclaimMemory, 0 },
+ { EfiACPIMemoryNVS, 0 },
+ { EfiReservedMemoryType, 0 },
+ { EfiRuntimeServicesData, 0 },
+ { EfiRuntimeServicesCode, 0 },
+ { EfiBootServicesCode, 0 },
+ { EfiBootServicesData, 0 },
+ { EfiLoaderCode, 0 },
+ { EfiLoaderData, 0 },
+ { EfiMaxMemoryType, 0 }
+};
+
+VOID
+BdsSetMemoryTypeInformationVariable (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ EFI_MEMORY_TYPE_INFORMATION *PreviousMemoryTypeInformation;
+ EFI_MEMORY_TYPE_INFORMATION *CurrentMemoryTypeInformation;
+ UINTN VariableSize;
+ BOOLEAN UpdateRequired;
+ UINTN Index;
+ UINTN Index1;
+ UINT32 Previous;
+ UINT32 Current;
+ UINT32 Next;
+ EFI_HOB_GUID_TYPE *Hob;
+
+ UpdateRequired = FALSE;
+
+ //
+ // Retrieve the current memory usage statistics. If they are not found, then
+ // no adjustments can be made to the Memory Type Information variable.
+ //
+ Status = EfiGetSystemConfigurationTable (&gEfiMemoryTypeInformationGuid, (VOID **)&CurrentMemoryTypeInformation);
+ if (EFI_ERROR (Status)) {
+ return;
+ }
+
+ //
+ // Get the Memory Type Information settings from a previous boot if they exist.
+ //
+ PreviousMemoryTypeInformation = BdsLibGetVariableAndSize (
+ EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+ &gEfiMemoryTypeInformationGuid,
+ &VariableSize
+ );
+
+ //
+ // If the previous Memory Type Information is not available, then set defaults
+ //
+ if (PreviousMemoryTypeInformation == NULL) {
+ Hob = GetFirstGuidHob (&gEfiMemoryTypeInformationGuid);
+
+ if (Hob != NULL) {
+ PreviousMemoryTypeInformation = GET_GUID_HOB_DATA (Hob);
+ VariableSize = GET_GUID_HOB_DATA_SIZE (Hob);
+ ASSERT (VariableSize == sizeof (mDefaultMemoryTypeInformation));
+ CopyMem (mDefaultMemoryTypeInformation, PreviousMemoryTypeInformation, VariableSize);
+ } else {
+ PreviousMemoryTypeInformation = mDefaultMemoryTypeInformation;
+ VariableSize = sizeof (mDefaultMemoryTypeInformation);
+ }
+ UpdateRequired = TRUE;
+ }
+
+ //
+ // Use a hueristic to adjust the Memory Type Information for the next boot
+ //
+ for (Index = 0; PreviousMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
+
+ Current = 0;
+ for (Index1 = 0; CurrentMemoryTypeInformation[Index1].Type != EfiMaxMemoryType; Index1++) {
+ if (PreviousMemoryTypeInformation[Index].Type == CurrentMemoryTypeInformation[Index1].Type) {
+ Current = CurrentMemoryTypeInformation[Index1].NumberOfPages;
+ break;
+ }
+ }
+
+ if (CurrentMemoryTypeInformation[Index1].Type == EfiMaxMemoryType) {
+ continue;
+ }
+
+ Previous = PreviousMemoryTypeInformation[Index].NumberOfPages;
+
+ if (Current > Previous) {
+ Next = Current + (Current >> 2);
+ } else if (Current < (Previous >> 1)) {
+ Next = Previous - (Previous >> 2);
+ } else {
+ Next = Previous;
+ }
+ if (Next > 0 && Next <= 16) {
+ Next = 16;
+ }
+
+ if (Next != Previous) {
+ PreviousMemoryTypeInformation[Index].NumberOfPages = Next;
+ UpdateRequired = TRUE;
+ }
+ }
+
+ //
+ // If any changes were made to the Memory Type Information settings, then set the new variable value
+ //
+ if (UpdateRequired) {
+ Status = gRT->SetVariable (
+ EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+ &gEfiMemoryTypeInformationGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+ VariableSize,
+ PreviousMemoryTypeInformation
+ );
+ }
+
+ return;
+}
+
+
+/*++
+
+Routine Description:
+
+ This routine is a notification function for legayc boot or exit boot
+ service event. It will adjust the memory information for different
+ memory type and save them into the variables for next boot
+
+Arguments:
+
+ Event - The event that triggered this notification function
+ Context - Pointer to the notification functions context
+
+Returns:
+
+ None.
+
+--*/
+VOID
+EFIAPI
+BdsReadyToBootEvent (
+ EFI_EVENT Event,
+ VOID *Context
+ )
+{
+ BdsSetMemoryTypeInformationVariable ();
+}
+
//
// BDS Platform Functions
//
@@ -69,6 +220,16 @@ Returns: gBS->CalculateCrc32 ((VOID *) gST, sizeof (EFI_SYSTEM_TABLE), &gST->Hdr.CRC32);
//
+ // Create Ready To Boot event
+ //
+ EfiCreateEventReadyToBootEx (
+ TPL_CALLBACK,
+ BdsReadyToBootEvent,
+ NULL,
+ &mReadyToBootEvent
+ );
+
+ //
// Initialize the platform specific string and language
//
InitializeStringSupport ();
diff --git a/Nt32Pkg/PlatformBdsDxe/Generic/Bds.h b/Nt32Pkg/PlatformBdsDxe/Generic/Bds.h index 36e05cdb14..055df2f2a8 100644 --- a/Nt32Pkg/PlatformBdsDxe/Generic/Bds.h +++ b/Nt32Pkg/PlatformBdsDxe/Generic/Bds.h @@ -50,6 +50,7 @@ Revision History #include <Guid/FileSystemVolumeLabelInfo.h>
#include <Guid/GenericPlatformVariable.h>
#include <Guid/GlobalVariable.h>
+#include <Guid/MemoryTypeInformation.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
diff --git a/Nt32Pkg/PlatformBdsDxe/PlatformBdsDxe.inf b/Nt32Pkg/PlatformBdsDxe/PlatformBdsDxe.inf index 9d2b0b0cb5..f79b30b79c 100644 --- a/Nt32Pkg/PlatformBdsDxe/PlatformBdsDxe.inf +++ b/Nt32Pkg/PlatformBdsDxe/PlatformBdsDxe.inf @@ -114,6 +114,7 @@ gEfiGenericPlatformVariableGuid # ALWAYS_CONSUMED
gEfiGlobalVariableGuid # ALWAYS_CONSUMED
gEfiBootStateGuid # ALWAYS_CONSUMED
+ gEfiMemoryTypeInformationGuid
[Protocols]
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