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/** @file
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <PiDxe.h>
#include <Library/TestPointCheckLib.h>
#include <Library/TestPointLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/HobLib.h>
#include <Guid/MemoryTypeInformation.h>
CHAR8 *
ShortNameOfMemoryType(
IN UINT32 Type
);
VOID
DumpMemoryTypeInfoSummary (
IN EFI_MEMORY_TYPE_INFORMATION *CurrentMemoryTypeInformation,
IN EFI_MEMORY_TYPE_INFORMATION *PreviousMemoryTypeInformation
)
{
UINTN Index;
UINTN Index1;
EFI_BOOT_MODE BootMode;
UINT32 Previous;
UINT32 Current;
UINT32 Next;
BOOLEAN MemoryTypeInformationModified;
MemoryTypeInformationModified = FALSE;
BootMode = GetBootModeHob();
//
// Use a heuristic to adjust the Memory Type Information for the next boot
//
DEBUG ((DEBUG_INFO, "\n"));
DEBUG ((DEBUG_INFO, " (HOB) (ConfTabl) (Var) \n"));
DEBUG ((DEBUG_INFO, " Memory Previous Current Next \n"));
DEBUG ((DEBUG_INFO, " Type Pages Pages Pages \n"));
DEBUG ((DEBUG_INFO, "========== ======== ======== ========\n"));
for (Index = 0; PreviousMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
for (Index1 = 0; CurrentMemoryTypeInformation[Index1].Type != EfiMaxMemoryType; Index1++) {
if (PreviousMemoryTypeInformation[Index].Type == CurrentMemoryTypeInformation[Index1].Type) {
break;
}
}
if (CurrentMemoryTypeInformation[Index1].Type == EfiMaxMemoryType) {
continue;
}
//
// Previous is the number of pages pre-allocated
// Current is the number of pages actually needed
//
Previous = PreviousMemoryTypeInformation[Index].NumberOfPages;
Current = CurrentMemoryTypeInformation[Index1].NumberOfPages;
Next = Previous;
//
// Inconsistent Memory Reserved across bootings may lead to S4 fail
// Write next varible to 125% * current when the pre-allocated memory is:
// 1. More than 150% of needed memory and boot mode is BOOT_WITH_DEFAULT_SETTING
// 2. Less than the needed memory
//
if ((Current + (Current >> 1)) < Previous) {
if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
Next = Current + (Current >> 2);
}
} else if (Current > Previous) {
Next = Current + (Current >> 2);
}
if (Next > 0 && Next < 4) {
Next = 4;
}
if (Next != Previous) {
PreviousMemoryTypeInformation[Index].NumberOfPages = Next;
MemoryTypeInformationModified = TRUE;
}
DEBUG ((DEBUG_INFO, ShortNameOfMemoryType(PreviousMemoryTypeInformation[Index].Type)));
DEBUG ((DEBUG_INFO, " %08x %08x %08x\n", Previous, Current, Next));
}
DEBUG ((DEBUG_INFO, "\n"));
if (MemoryTypeInformationModified) {
DEBUG ((DEBUG_INFO, "MemoryTypeInformation - Modified. RESET Needed!\n"));
} else {
DEBUG ((DEBUG_INFO, "MemoryTypeInformation - Unmodified.\n"));
}
DEBUG ((DEBUG_INFO, "\n"));
}
EFI_STATUS
TestPointCheckMemoryTypeInformation (
VOID
)
{
EFI_STATUS Status;
EFI_HOB_GUID_TYPE *GuidHob;
VOID *CurrentMemoryTypeInformation;
VOID *PreviousMemoryTypeInformation;
VOID *VariableMemoryTypeInformation;
DEBUG ((DEBUG_INFO, "==== TestPointCheckMemoryTypeInformation - Enter\n"));
CurrentMemoryTypeInformation = NULL;
PreviousMemoryTypeInformation = NULL;
Status = EfiGetSystemConfigurationTable (&gEfiMemoryTypeInformationGuid, &CurrentMemoryTypeInformation);
if (EFI_ERROR(Status)) {
goto Done;
}
GuidHob = GetFirstGuidHob (&gEfiMemoryTypeInformationGuid);
if (GuidHob != NULL) {
PreviousMemoryTypeInformation = GET_GUID_HOB_DATA(GuidHob);
} else {
Status = EFI_NOT_FOUND;
goto Done;
}
GetVariable2 (
EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
&gEfiMemoryTypeInformationGuid,
&VariableMemoryTypeInformation,
NULL
);
if ((CurrentMemoryTypeInformation != NULL) && (PreviousMemoryTypeInformation != NULL)) {
DumpMemoryTypeInfoSummary(CurrentMemoryTypeInformation, PreviousMemoryTypeInformation);
}
DEBUG ((DEBUG_INFO, "==== TestPointCheckMemoryTypeInformation - Exit\n"));
Done:
if (EFI_ERROR(Status)) {
TestPointLibAppendErrorString (
PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
NULL,
TEST_POINT_BYTE4_READY_TO_BOOT_MEMORY_TYPE_INFORMATION_FUNCTIONAL_ERROR_CODE \
TEST_POINT_READY_TO_BOOT \
TEST_POINT_BYTE4_READY_TO_BOOT_MEMORY_TYPE_INFORMATION_FUNCTIONAL_ERROR_STRING
);
}
return Status;
}
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