mirror of
https://github.com/acidanthera/OpenCorePkg.git
synced 2025-12-08 19:25:01 +00:00
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/** @file
|
|
Verify MSR 0xE2 status on all the processors.
|
|
|
|
Copyright (c) 2018, vit9696. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which 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/PcdLib.h>
|
|
#include <Library/UefiLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/OcMiscLib.h>
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/UefiRuntimeServicesTableLib.h>
|
|
#include <Library/UefiApplicationEntryPoint.h>
|
|
#include <Register/Msr.h>
|
|
#include <Protocol/MpService.h>
|
|
|
|
STATIC EFI_MP_SERVICES_PROTOCOL *mMpServices;
|
|
STATIC UINTN mHasLockedCores;
|
|
STATIC UINTN mHasUnlockedCores;
|
|
|
|
VOID
|
|
EFIAPI
|
|
ReadMsrE2 (
|
|
IN VOID *Buffer
|
|
)
|
|
{
|
|
UINTN ProcNum = 0;
|
|
MSR_BROADWELL_PKG_CST_CONFIG_CONTROL_REGISTER Value;
|
|
EFI_STATUS Status;
|
|
|
|
Status = mMpServices->WhoAmI (mMpServices, &ProcNum);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
Print (L"Failed to detect CPU Number\n");
|
|
return;
|
|
}
|
|
|
|
Value.Uint64 = AsmReadMsr64 (MSR_BROADWELL_PKG_CST_CONFIG_CONTROL);
|
|
|
|
Print (L"CPU%02d has MSR 0xE2: 0x%016LX\n", ProcNum, Value.Uint64);
|
|
|
|
if (Value.Bits.CFGLock) {
|
|
mHasLockedCores = 1;
|
|
} else {
|
|
mHasUnlockedCores = 1;
|
|
}
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
VerifyMSRE2 (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
Print (L"Looking up EFI_MP_SERVICES_PROTOCOL...\n");
|
|
|
|
Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&mMpServices);
|
|
if (EFI_ERROR (Status)) {
|
|
Print (L"Failed to find EFI_MP_SERVICES_PROTOCOL - %r\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Print (L"Checking MSR 0xE2 on all CPUs. Values must be SAME!!!\n");
|
|
|
|
ReadMsrE2 (NULL);
|
|
|
|
Print (L"Starting All APs to verify 0xE2 register...\n", Status);
|
|
|
|
Status = mMpServices->StartupAllAPs (mMpServices, ReadMsrE2, TRUE, NULL, 5000000, NULL, NULL);
|
|
if (EFI_ERROR (Status)) {
|
|
Print (L"Failed to StartupAllAPs - %r\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Print (L"Done checking MSR 0xE2 register, compare the values printed!\n");
|
|
|
|
if (mHasLockedCores && mHasUnlockedCores) {
|
|
Print (L"This firmware has BORKED MSR 0xE2 register!\n");
|
|
Print (L"Some cores are locked, some are not!!!\n");
|
|
} else if (mHasUnlockedCores) {
|
|
Print (L"This firmware has UNLOCKED MSR 0xE2 register!\n");
|
|
} else {
|
|
Print (L"This firmware has LOCKED MSR 0xE2 register!\n");
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|