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CloverBootloader/rEFIt_UEFI/Platform/Nvram.c
Sherlocks 32c2f6e103 Clean up Reset NVRAM
2019-11-22 22:19:43 +09:00

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/**
* Module for work with runtime (RT, NVRAM) vars,
* determining default boot volume (Startup disk)
* and (kid of) persistent RT support with nvram.plist on CloverEFI.
* dmazar, 2012
*/
#include "Platform.h"
#ifndef DEBUG_ALL
#define DEBUG_SET 1
#else
#define DEBUG_SET DEBUG_ALL
#endif
#if DEBUG_SET == 0
#define DBG(...)
#else
#define DBG(...) DebugLog (DEBUG_SET, __VA_ARGS__)
#endif
// for saving nvram.plist and it's data
TagPtr gNvramDict;
//
// vars filled after call to GetEfiBootDeviceFromNvram ()
//
// always contains original efi-boot-device-data
EFI_DEVICE_PATH_PROTOCOL *gEfiBootDeviceData;
// if gEfiBootDeviceData starts with MemoryMapped node, then gBootCampHD = "BootCampHD" var, otherwise == NULL
EFI_DEVICE_PATH_PROTOCOL *gBootCampHD;
// contains only volume dev path from gEfiBootDeviceData or gBootCampHD
EFI_DEVICE_PATH_PROTOCOL *gEfiBootVolume;
// contains file path from gEfiBootDeviceData or gBootCampHD (if exists)
CHAR16 *gEfiBootLoaderPath;
// contains GPT GUID from gEfiBootDeviceData or gBootCampHD (if exists)
EFI_GUID *gEfiBootDeviceGuid;
// Lilu / OpenCore
EFI_GUID gOcVendorVariableGuid = { 0x4D1FDA02, 0x38C7, 0x4A6A, { 0x9C, 0xC6, 0x4B, 0xCC, 0xA8, 0xB3, 0x01, 0x02 } };
EFI_GUID gOcReadOnlyVariableGuid = { 0xE09B9297, 0x7928, 0x4440, { 0x9A, 0xAB, 0xD1, 0xF8, 0x53, 0x6F, 0xBF, 0x0A } };
EFI_GUID gOcWriteOnlyVariableGuid = { 0xF0B9AF8F, 0x2222, 0x4840, { 0x8A, 0x37, 0xEC, 0xF7, 0xCC, 0x8C, 0x12, 0xE1 } };
// Ozmosis
EFI_GUID mOzmosisProprietary1Guid = { 0x1F8E0C02, 0x58A9, 0x4E34, { 0xAE, 0x22, 0x2B, 0x63, 0x74, 0x5F, 0xA1, 0x01 } };
EFI_GUID mOzmosisProprietary2Guid = { 0x9480E8A1, 0x1793, 0x46C9, { 0x91, 0xD8, 0x11, 0x08, 0xDB, 0xA4, 0x73, 0x1C } };
// BootChime
extern EFI_GUID gBootChimeVendorVariableGuid;
//Apple variables
extern EFI_GUID gAppleCoreStorageVariableGuid;
extern EFI_GUID gAppleTamperResistantBootVariableGuid;
extern EFI_GUID gAppleWirelessNetworkVariableGuid;
extern EFI_GUID gApplePersonalizationVariableGuid;
extern EFI_GUID gAppleNetbootVariableGuid;
extern EFI_GUID gAppleSecureBootVariableGuid;
extern EFI_GUID gAppleTamperResistantBootSecureVariableGuid;
extern EFI_GUID gAppleTamperResistantBootEfiUserVariableGuid;
APPLE_SMC_IO_PROTOCOL *gAppleSmc = NULL;
/** returns given time as miliseconds.
* assumes 31 days per month, so it's not correct,
* but is enough for basic checks.
*/
UINT64
GetEfiTimeInMs (
IN EFI_TIME *T
)
{
UINT64 TimeMs;
TimeMs = T->Year - 1900;
// is 64bit multiply workign in 32 bit?
TimeMs = MultU64x32 (TimeMs, 12) + T->Month;
TimeMs = MultU64x32 (TimeMs, 31) + T->Day; // counting with 31 day
TimeMs = MultU64x32 (TimeMs, 24) + T->Hour;
TimeMs = MultU64x32 (TimeMs, 60) + T->Minute;
TimeMs = MultU64x32 (TimeMs, 60) + T->Second;
TimeMs = MultU64x32 (TimeMs, 1000) + DivU64x32(T->Nanosecond, 1000000);
return TimeMs;
}
/** Reads and returns value of NVRAM variable. */
VOID *GetNvramVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
OUT UINTN *DataSize OPTIONAL)
{
EFI_STATUS Status;
VOID *Data = NULL;
//
// Pass in a zero size buffer to find the required buffer size.
//
UINTN IntDataSize = 0;
Status = gRT->GetVariable (VariableName, VendorGuid, Attributes, &IntDataSize, NULL);
if (IntDataSize == 0) {
return NULL;
}
if (Status == EFI_BUFFER_TOO_SMALL) {
//
// Allocate the buffer to return
//
Data = AllocateZeroPool (IntDataSize + 1);
if (Data != NULL) {
//
// Read variable into the allocated buffer.
//
Status = gRT->GetVariable (VariableName, VendorGuid, Attributes, &IntDataSize, Data);
if (EFI_ERROR (Status)) {
FreePool (Data);
IntDataSize = 0;
Data = NULL;
}
}
}
if (DataSize != NULL) {
*DataSize = IntDataSize;
}
return Data;
}
/** Sets NVRAM variable. Does nothing if variable with the same data and attributes already exists. */
EFI_STATUS
SetNvramVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data
)
{
//EFI_STATUS Status;
VOID *OldData;
UINTN OldDataSize = 0;
UINT32 OldAttributes = 0;
//DBG ("SetNvramVariable (%s, guid, 0x%x, %d):", VariableName, Attributes, DataSize);
OldData = GetNvramVariable (VariableName, VendorGuid, &OldAttributes, &OldDataSize);
if (OldData != NULL) {
// var already exists - check if it equal to new value
//DBG (" exists(0x%x, %d)", OldAttributes, OldDataSize);
if ((OldAttributes == Attributes) &&
(OldDataSize == DataSize) &&
(CompareMem (OldData, Data, DataSize) == 0)) {
// it's the same - do nothing
//DBG (", equal -> not writing again.\n");
FreePool (OldData);
return EFI_SUCCESS;
}
//DBG (", not equal\n");
FreePool (OldData);
// not the same - delete previous one if attributes are different
if (OldAttributes != Attributes) {
DeleteNvramVariable (VariableName, VendorGuid);
//DBG (", diff. attr: deleting old (%r)", Status);
}
}
//DBG ("\n"); // for debug without Status
//DBG (" -> writing new (%r)\n", Status);
//return Status;
return gRT->SetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);
}
/** Sets NVRAM variable. Does nothing if variable with the same name already exists. */
EFI_STATUS
AddNvramVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data
)
{
VOID *OldData;
//DBG ("SetNvramVariable (%s, guid, 0x%x, %d):\n", VariableName, Attributes, DataSize);
OldData = GetNvramVariable (VariableName, VendorGuid, NULL, NULL);
if (OldData == NULL)
{
// set new value
return gRT->SetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);
// DBG (" -> writing new (%r)\n", Status);
} else {
FreePool (OldData);
return EFI_ABORTED;
}
}
/** Deletes NVRAM variable. */
EFI_STATUS
DeleteNvramVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid
)
{
EFI_STATUS Status;
// Delete: attributes and data size = 0
Status = gRT->SetVariable (VariableName, VendorGuid, 0, 0, NULL);
//DBG ("DeleteNvramVariable (%s, guid = %r):\n", VariableName, Status);
return Status;
}
BOOLEAN
IsDeletableVariable (
IN CHAR16 *Name,
IN EFI_GUID *Guid
)
{
// Apple GUIDs
if (CompareGuid(Guid, &gEfiAppleVendorGuid) ||
CompareGuid(Guid, &gEfiAppleBootGuid) ||
CompareGuid(Guid, &gAppleCoreStorageVariableGuid) ||
CompareGuid(Guid, &gAppleTamperResistantBootVariableGuid) ||
CompareGuid(Guid, &gAppleWirelessNetworkVariableGuid) ||
CompareGuid(Guid, &gApplePersonalizationVariableGuid) ||
CompareGuid(Guid, &gAppleNetbootVariableGuid) ||
CompareGuid(Guid, &gAppleSecureBootVariableGuid) ||
CompareGuid(Guid, &gAppleTamperResistantBootSecureVariableGuid) ||
CompareGuid(Guid, &gAppleTamperResistantBootEfiUserVariableGuid)) {
return TRUE;
// Disable Clover Boot Options from being deleted
// Global variable boot options
/*} else if (CompareGuid (Guid, &gEfiGlobalVariableGuid)) {
// Only erase boot and driver entries for BDS
// I.e. BootOrder, Boot####, DriverOrder, Driver####
if (!StrnCmp (Name, L"Boot", StrLen(L"Boot")) ||
!StrnCmp (Name, L"Driver", StrLen(L"Driver"))) {
return TRUE;
}*/
// Lilu / OpenCore extensions
} else if (CompareGuid (Guid, &gOcVendorVariableGuid) ||
CompareGuid(Guid, &gOcReadOnlyVariableGuid) ||
CompareGuid(Guid, &gOcWriteOnlyVariableGuid)) {
return TRUE;
// Ozmozis extensions
} else if (CompareGuid (Guid, &mOzmosisProprietary1Guid) ||
CompareGuid (Guid, &mOzmosisProprietary2Guid)) {
return TRUE;
// BootChime
} else if (CompareGuid (Guid, &gBootChimeVendorVariableGuid)) {
return TRUE;
}
return FALSE;
}
// Reset Native NVRAM by vit9696, reworked and implemented by Sherlocks
EFI_STATUS
ResetNativeNvram ()
{
EFI_STATUS Status = EFI_NOT_FOUND;
EFI_GUID Guid;
CHAR16 *Name;
UINTN NameSize;
UINTN NewNameSize;
BOOLEAN Restart = TRUE;
UINTN VolumeIndex;
REFIT_VOLUME *Volume;
EFI_FILE_HANDLE FileHandle;
//DbgHeader("ResetNativeNvram: cleanup NVRAM variables");
NameSize = sizeof (CHAR16);
Name = AllocateZeroPool (NameSize);
if (Name == NULL) {
return Status;
}
while (TRUE) {
if (Restart) {
ZeroMem (&Guid, sizeof(Guid));
ZeroMem (Name, sizeof(Name));
Restart = FALSE;
}
NewNameSize = NameSize;
Status = gRT->GetNextVariableName (&NewNameSize, Name, &Guid);
if (Status == EFI_BUFFER_TOO_SMALL) {
Name = ReallocatePool (NameSize, NewNameSize, Name);
if (Name == NULL) {
return Status;
}
Status = gRT->GetNextVariableName (&NewNameSize, Name, &Guid);
NameSize = NewNameSize;
}
if (EFI_ERROR (Status)) {
break;
}
if (!EFI_ERROR (Status)) {
if (IsDeletableVariable (Name, &Guid)) {
//DBG ("Deleting %g:%s...", &Guid, Name);
Status = DeleteNvramVariable(Name, &Guid);
if (!EFI_ERROR (Status)) {
//DBG ("OK\n");
Restart = TRUE;
} else {
//DBG ("FAIL (%r)\n", Status);
break;
}
}
}
}
if (Name) {
FreePool (Name);
}
if (gFirmwareClover || gDriversFlags.EmuVariableLoaded) {
//DBG("Searching volumes for nvram.plist\n");
for (VolumeIndex = 0; VolumeIndex < VolumesCount; ++VolumeIndex) {
Volume = Volumes[VolumeIndex];
if (!Volume->RootDir) {
continue;
}
Status = Volume->RootDir->Open (Volume->RootDir, &FileHandle, L"nvram.plist", EFI_FILE_MODE_READ, 0);
if (EFI_ERROR(Status)) {
//DBG("- [%02d]: '%s' - no nvram.plist - skipping!\n", VolumeIndex, Volume->VolName);
continue;
}
// find the partition where nvram.plist can be deleted and delete it
if (Volume != NULL) {
if (StriStr(Volume->VolName, L"EFI") != NULL) {
//DBG("- [%02d]: '%s' - found nvram.plist and deleted it\n", VolumeIndex, Volume->VolName);
Status = DeleteFile (Volume->RootDir, L"nvram.plist");
} else {
//DBG("- [%02d]: '%s' - found nvram.plist but can't delete it\n", VolumeIndex, Volume->VolName);
}
}
}
}
return Status;
}
///
// Print all fakesmc variables, i.e. SMC keys
///
UINT32 KeyFromName(CHAR16 *Name)
{
//fakesmc-key-CLKT-ui32: Size = 4, Data: 00 00 8C BE
UINT32 Key;
Key = ((Name[12] & 0xFF) << 24) + ((Name[13] & 0xFF) << 16) +
((Name[14] & 0xFF) << 8) + ((Name[15] & 0xFF) << 0);
return Key;
}
UINT32 TypeFromName(CHAR16 *Name)
{
//fakesmc-key-CLKT-ui32: Size = 4, Data: 00 00 8C BE
UINT32 Key;
Key = ((Name[17] & 0xFF) << 24) + ((Name[18] & 0xFF) << 16) +
((Name[19] & 0xFF) << 8) + ((Name[20] & 0xFF) << 0);
if (Name[20] == L'\0') {
Key += 0x20; //' '
}
return Key;
}
UINT32 FourCharKey(CHAR8 *Name)
{
return (Name[0] << 24) + (Name[1] << 16) + (Name[2] << 8) + Name[3]; //Big Endian
}
INT8 NKey[4] = {0, 0, 0, 0};
INT8 SAdr[4] = {0, 0, 3, 0};
INT8 SNum[1] = {1};
VOID
GetSmcKeys (BOOLEAN WriteToSMC)
{
EFI_STATUS Status;
CHAR16 *Name;
EFI_GUID Guid;
UINTN NameSize;
UINTN NewNameSize;
UINT8 *Data;
UINTN DataSize;
INTN NumKey = 0;
STATIC UINTN Once = 0;
if (Once++) {
return;
}
NameSize = sizeof (CHAR16);
Name = AllocateZeroPool (NameSize);
if (Name == NULL) {
return;
}
DbgHeader("Dump SMC keys from NVRAM");
Status = gBS->LocateProtocol(&gAppleSMCProtocolGuid, NULL, (VOID**)&gAppleSmc);
if (!EFI_ERROR(Status)) {
DBG("found AppleSMC protocol\n");
} else {
DBG("no AppleSMC protocol\n");
gAppleSmc = NULL;
}
while (TRUE) {
NewNameSize = NameSize;
Status = gRT->GetNextVariableName (&NewNameSize, Name, &Guid);
if (Status == EFI_BUFFER_TOO_SMALL) {
Name = ReallocatePool (NameSize, NewNameSize, Name);
if (Name == NULL) {
return; //if something wrong then just do nothing
}
Status = gRT->GetNextVariableName (&NewNameSize, Name, &Guid);
NameSize = NewNameSize;
}
if (EFI_ERROR (Status)) {
break; //no more variables
}
if (!StrStr(Name, L"fakesmc-key")) {
continue; //the variable is not interesting for us
}
Data = GetNvramVariable (Name, &Guid, NULL, &DataSize);
if (Data) {
/* UINTN Index;
DBG(" %s:", Name);
for (Index = 0; Index < DataSize; Index++) {
DBG("%02x ", *((UINT8*)Data + Index));
}
DBG("\n"); */
if (gAppleSmc && WriteToSMC) {
Status = gAppleSmc->SmcAddKey(gAppleSmc, KeyFromName(Name), (SMC_DATA_SIZE)DataSize, TypeFromName(Name), 0xC0);
if (!EFI_ERROR(Status)) {
Status = gAppleSmc->SmcWriteValue(gAppleSmc, KeyFromName(Name), (SMC_DATA_SIZE)DataSize, Data);
// DBG("Write to AppleSMC status=%r\n", Status);
}
NumKey++;
}
FreePool (Data);
}
}
if (WriteToSMC && gAppleSmc && (gAppleSmc->Signature == NON_APPLE_SMC_SIGNATURE)) {
CHAR8 Mode = SMC_MODE_APPCODE;
NKey[3] = NumKey & 0xFF;
NKey[2] = (NumKey >> 8) & 0xFF; //key, size, type, attr
DBG("Registered %d SMC keys\n", NumKey);
Status = gAppleSmc->SmcAddKey(gAppleSmc, FourCharKey("#KEY"), 4, SmcKeyTypeUint32, 0xC0);
if (!EFI_ERROR(Status)) {
Status = gAppleSmc->SmcWriteValue(gAppleSmc, FourCharKey("#KEY"), 4, (SMC_DATA *)&NKey);
}
Status = gAppleSmc->SmcAddKey(gAppleSmc, FourCharKey("$Adr"), 4, SmcKeyTypeUint32, 0x08);
if (!EFI_ERROR(Status)) {
Status = gAppleSmc->SmcWriteValue(gAppleSmc, FourCharKey("$Adr"), 4, (SMC_DATA *)&SAdr);
}
Status = gAppleSmc->SmcAddKey(gAppleSmc, FourCharKey("$Num"), 1, SmcKeyTypeUint8, 0x08);
if (!EFI_ERROR(Status)) {
Status = gAppleSmc->SmcWriteValue(gAppleSmc, FourCharKey("$Num"), 1, (SMC_DATA *)&SNum);
}
Status = gAppleSmc->SmcAddKey(gAppleSmc, FourCharKey("RMde"), 1, SmcKeyTypeChar, 0xC0);
if (!EFI_ERROR(Status)) {
Status = gAppleSmc->SmcWriteValue(gAppleSmc, FourCharKey("RMde"), 1, (SMC_DATA *)&Mode);
}
}
FreePool (Name);
}
/*
VOID DumpSmcKeys()
{
if (!gAppleSmc || !gAppleSmc->DumpData) {
return;
}
gAppleSmc->DumpData(gAppleSmc);
}
*/
/** Searches for GPT HDD dev path node and return pointer to partition GUID or NULL. */
EFI_GUID
*FindGPTPartitionGuidInDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
{
HARDDRIVE_DEVICE_PATH *HDDDevPath;
EFI_GUID *Guid = NULL;
if (DevicePath == NULL) {
return NULL;
}
while (!IsDevicePathEndType(DevicePath) &&
!(DevicePathType(DevicePath) == MEDIA_DEVICE_PATH && DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP)) {
DevicePath = NextDevicePathNode(DevicePath);
}
if (DevicePathType(DevicePath) == MEDIA_DEVICE_PATH && DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP) {
HDDDevPath = (HARDDRIVE_DEVICE_PATH*)DevicePath;
if (HDDDevPath->SignatureType == SIGNATURE_TYPE_GUID) {
Guid = (EFI_GUID*)HDDDevPath->Signature;
}
}
return Guid;
}
/** detailed debug for BootVolumeDevicePathEqual */
#define DBG_DP(...)
//#define DBG_DP(...) DBG (__VA_ARGS__)
/** Returns TRUE if dev paths are equal. Ignores some differences. */
BOOLEAN
BootVolumeDevicePathEqual (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath1,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath2
)
{
BOOLEAN Equal;
UINT8 Type1;
UINT8 SubType1;
UINT8 Type2;
UINTN Len1;
UINT8 SubType2;
UINTN Len2;
SATA_DEVICE_PATH *SataNode1;
SATA_DEVICE_PATH *SataNode2;
BOOLEAN ForceEqualNodes;
DBG_DP (" BootVolumeDevicePathEqual:\n %s\n %s\n", FileDevicePathToStr (DevicePath1), FileDevicePathToStr (DevicePath2));
DBG_DP (" N1: (Type, Subtype, Len) N2: (Type, Subtype, Len)\n");
Equal = FALSE;
while (TRUE) {
Type1 = DevicePathType (DevicePath1);
SubType1 = DevicePathSubType (DevicePath1);
Len1 = DevicePathNodeLength (DevicePath1);
Type2 = DevicePathType (DevicePath2);
SubType2 = DevicePathSubType (DevicePath2);
Len2 = DevicePathNodeLength (DevicePath2);
ForceEqualNodes = FALSE;
DBG_DP (" N1: (%d, %d, %d)", Type1, SubType1, Len1);
DBG_DP (" N2: (%d, %d, %d)", Type2, SubType2, Len2);
/*
DBG_DP ("%s\n", DevicePathToStr (DevicePath1));
DBG_DP ("%s\n", DevicePathToStr (DevicePath2));
*/
//
// Some eSata device can have path:
// PciRoot(0x0)/Pci(0x1C,0x5)/Pci(0x0,0x0)/VenHw(CF31FAC5-C24E-11D2-85F3-00A0C93EC93B,80)
// while macOS can set it as
// PciRoot(0x0)/Pci(0x1C,0x5)/Pci(0x0,0x0)/Sata(0x0,0x0,0x0)
// we'll assume VenHw and Sata nodes to be equal to cover that
// as well add NVME to this comparison
//
if (Type1 == MESSAGING_DEVICE_PATH && SubType1 == MSG_SATA_DP) {
if ((Type2 == HARDWARE_DEVICE_PATH && SubType2 == HW_VENDOR_DP)
|| (Type2 == MESSAGING_DEVICE_PATH && SubType2 == MSG_NVME_NAMESPACE_DP)) {
ForceEqualNodes = TRUE;
}
} else if (Type2 == MESSAGING_DEVICE_PATH && SubType2 == MSG_SATA_DP &&
((Type1 == HARDWARE_DEVICE_PATH && SubType1 == HW_VENDOR_DP)
|| (Type1 == MESSAGING_DEVICE_PATH && SubType1 == MSG_NVME_NAMESPACE_DP))) {
ForceEqualNodes = TRUE;
}
//
// UEFI can see it as PcieRoot, while macOS could generate PciRoot
// we'll assume Acpi dev path nodes to be equal to cover that
//
if (Type1 == ACPI_DEVICE_PATH && Type2 == ACPI_DEVICE_PATH) {
ForceEqualNodes = TRUE;
}
if (ForceEqualNodes) {
// assume equal nodes
DBG_DP (" - forcing equal nodes\n");
DevicePath1 = NextDevicePathNode (DevicePath1);
DevicePath2 = NextDevicePathNode (DevicePath2);
continue;
}
if (Type1 != Type2 || SubType1 != SubType2 || Len1 != Len2) {
// Not equal
DBG_DP (" - not equal\n");
break;
}
//
// Same type/subtype/len ...
//
if (IsDevicePathEnd (DevicePath1)) {
// END node - they are the same
Equal = TRUE;
DBG_DP (" - END = equal\n");
break;
}
//
// Do mem compare of nodes or special compare for selected types/subtypes
//
if (Type1 == MESSAGING_DEVICE_PATH && SubType1 == MSG_SATA_DP) {
//
// Ignore
//
SataNode1 = (SATA_DEVICE_PATH *)DevicePath1;
SataNode2 = (SATA_DEVICE_PATH *)DevicePath2;
if (SataNode1->HBAPortNumber != SataNode2->HBAPortNumber) {
// not equal
DBG_DP (" - not equal SataNode.HBAPortNumber\n");
break;
}
if (SataNode1->Lun != SataNode2->Lun) {
// not equal
DBG_DP (" - not equal SataNode.Lun\n");
break;
}
DBG_DP (" - forcing equal nodes");
} else if (CompareMem (DevicePath1, DevicePath2, DevicePathNodeLength (DevicePath1)) != 0) {
// Not equal
DBG_DP (" - not equal\n");
break;
}
DBG_DP ("\n");
//
// Advance to next node
//
DevicePath1 = NextDevicePathNode (DevicePath1);
DevicePath2 = NextDevicePathNode (DevicePath2);
}
return Equal;
}
/** Returns TRUE if dev paths contain the same MEDIA_DEVICE_PATH. */
BOOLEAN
BootVolumeMediaDevicePathNodesEqual (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath1,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath2
)
{
DevicePath1 = FindDevicePathNodeWithType (DevicePath1, MEDIA_DEVICE_PATH, 0);
if (DevicePath1 == NULL) {
return FALSE;
}
DevicePath2 = FindDevicePathNodeWithType (DevicePath2, MEDIA_DEVICE_PATH, 0);
if (DevicePath2 == NULL) {
return FALSE;
}
return (DevicePathNodeLength (DevicePath1) == DevicePathNodeLength (DevicePath1))
&& (CompareMem (DevicePath1, DevicePath2, DevicePathNodeLength (DevicePath1)) == 0);
}
/** Reads gEfiAppleBootGuid:efi-boot-device-data and BootCampHD NVRAM variables and parses them
* into gEfiBootVolume, gEfiBootLoaderPath and gEfiBootDeviceGuid.
* Vars after this call:
* gEfiBootDeviceData - original efi-boot-device-data
* gBootCampHD - if gEfiBootDeviceData starts with MemoryMapped node, then BootCampHD variable (device path), NULL otherwise
* gEfiBootVolume - volume device path (from efi-boot-device-data or BootCampHD)
* gEfiBootLoaderPath - file path (from efi-boot-device-data or BootCampHD) or NULL
* gEfiBootDeviceGuid - GPT volume GUID if gEfiBootVolume or NULL
*/
EFI_STATUS
GetEfiBootDeviceFromNvram ()
{
UINTN Size = 0;
EFI_GUID *Guid;
FILEPATH_DEVICE_PATH *FileDevPath;
DbgHeader("GetEfiBootDeviceFromNvram");
// DBG ("GetEfiBootDeviceFromNvram:");
if (gEfiBootDeviceData != NULL) {
// DBG (" - [!] already parsed\n");
return EFI_SUCCESS;
}
gEfiBootDeviceData = GetNvramVariable (L"efi-boot-next-data", &gEfiAppleBootGuid, NULL, &Size);
if (gEfiBootDeviceData != NULL) {
// DBG("Got efi-boot-next-data size=%d\n", Size);
if (IsDevicePathValid(gEfiBootDeviceData, Size)) {
// DBG(" - efi-boot-next-data: %s\n", FileDevicePathToStr (gEfiBootDeviceData));
} else {
// DBG(" - device path for efi-boot-next-data is invalid\n");
FreePool(gEfiBootDeviceData);
gEfiBootDeviceData = NULL;
}
}
if (gEfiBootDeviceData == NULL) {
VOID *Value;
UINTN Size2=0;
EFI_STATUS Status;
Status = GetVariable2 (L"aptiofixflag", &gEfiAppleBootGuid, &Value, &Size2);
if (EFI_ERROR(Status)) {
gEfiBootDeviceData = GetNvramVariable (L"efi-boot-device-data", &gEfiAppleBootGuid, NULL, &Size);
} else {
gEfiBootDeviceData = GetNvramVariable (L"specialbootdevice", &gEfiAppleBootGuid, NULL, &Size);
}
if (gEfiBootDeviceData != NULL) {
// DBG("Got efi-boot-device-data size=%d\n", Size);
if (!IsDevicePathValid(gEfiBootDeviceData, Size)) {
// DBG(" - device path for efi-boot-device-data is invalid\n");
FreePool(gEfiBootDeviceData);
gEfiBootDeviceData = NULL;
}
}
}
if (gEfiBootDeviceData == NULL) {
// DBG (" - [!] efi-boot-device-data not found\n");
return EFI_NOT_FOUND;
}
// DBG ("\n");
DBG (" - efi-boot-device-data: %s\n", FileDevicePathToStr (gEfiBootDeviceData));
gEfiBootVolume = gEfiBootDeviceData;
//
// if gEfiBootDeviceData starts with MemoryMapped node,
// then Startup Disk sets BootCampHD to Win disk dev path.
//
if (DevicePathType(gEfiBootDeviceData) == HARDWARE_DEVICE_PATH && DevicePathSubType (gEfiBootDeviceData) == HW_MEMMAP_DP) {
gBootCampHD = GetNvramVariable (L"BootCampHD", &gEfiAppleBootGuid, NULL, &Size);
gEfiBootVolume = gBootCampHD;
if (gBootCampHD == NULL) {
// DBG (" - [!] Error: BootCampHD not found\n");
return EFI_NOT_FOUND;
}
if (!IsDevicePathValid(gBootCampHD, Size)) {
// DBG (" Error: BootCampHD device path is invalid\n");
FreePool(gBootCampHD);
gEfiBootVolume = gBootCampHD = NULL;
return EFI_NOT_FOUND;
}
DBG (" - BootCampHD: %s\n", FileDevicePathToStr (gBootCampHD));
}
//
// if gEfiBootVolume contains FilePathNode, then split them into gEfiBootVolume dev path and gEfiBootLoaderPath
//
gEfiBootLoaderPath = NULL;
FileDevPath = (FILEPATH_DEVICE_PATH *)FindDevicePathNodeWithType (gEfiBootVolume, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP);
if (FileDevPath != NULL) {
gEfiBootLoaderPath = AllocateCopyPool (StrSize(FileDevPath->PathName), FileDevPath->PathName);
// copy DevPath and write end of path node after in place of file path node
gEfiBootVolume = DuplicateDevicePath (gEfiBootVolume);
FileDevPath = (FILEPATH_DEVICE_PATH *)FindDevicePathNodeWithType (gEfiBootVolume, MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP);
SetDevicePathEndNode (FileDevPath);
// gEfiBootVolume now contains only Volume path
}
DBG (" - Volume: '%s'\n", FileDevicePathToStr (gEfiBootVolume));
DBG (" - LoaderPath: '%s'\n", gEfiBootLoaderPath);
//
// if this is GPT disk, extract GUID
// gEfiBootDeviceGuid can be used as a flag for GPT disk then
//
Guid = FindGPTPartitionGuidInDevicePath (gEfiBootVolume);
if (Guid != NULL) {
gEfiBootDeviceGuid = AllocatePool (sizeof(EFI_GUID));
if (gEfiBootDeviceGuid != NULL) {
CopyMem (gEfiBootDeviceGuid, Guid, sizeof(EFI_GUID));
DBG (" - Guid = %g\n", gEfiBootDeviceGuid);
}
}
return EFI_SUCCESS;
}
/** Loads and parses nvram.plist into gNvramDict. */
EFI_STATUS
LoadNvramPlist (
IN EFI_FILE *RootDir,
IN CHAR16* NVRAMPlistPath
)
{
EFI_STATUS Status;
CHAR8 *NvramPtr;
UINTN Size;
//
// skip loading if already loaded
//
if (gNvramDict != NULL) {
return EFI_SUCCESS;
}
//
// load nvram.plist
//
Status = egLoadFile (RootDir, NVRAMPlistPath, (UINT8**)&NvramPtr, &Size);
if(EFI_ERROR(Status)) {
// DBG (" not present\n");
return Status;
}
DBG (" loaded, size=%d\n", Size);
//
// parse it into gNvramDict
//
Status = ParseXML ((const CHAR8*)NvramPtr, &gNvramDict, (UINT32)Size);
// if(Status != EFI_SUCCESS) {
// DBG (" parsing error\n");
// }
FreePool (NvramPtr);
// we will leave nvram.plist loaded and parsed for later processing
//FreeTag(gNvramDict);
return Status;
}
/** Searches all volumes for the most recent nvram.plist and loads it into gNvramDict. */
EFI_STATUS
LoadLatestNvramPlist ()
{
EFI_STATUS Status;
UINTN Index;
REFIT_VOLUME *Volume;
// EFI_GUID *Guid;
EFI_FILE_HANDLE FileHandle;
EFI_FILE_INFO *FileInfo;
UINT64 LastModifTimeMs;
UINT64 ModifTimeMs;
REFIT_VOLUME *VolumeWithLatestNvramPlist;
//there are debug messages not needed for users
// DBG ("Searching volumes for latest nvram.plist ...");
//
// skip loading if already loaded
//
if (gNvramDict != NULL) {
// DBG (" already loaded\n");
return EFI_SUCCESS;
}
// DBG ("\n");
//
// find latest nvram.plist
//
LastModifTimeMs = 0;
VolumeWithLatestNvramPlist = NULL;
// search all volumes
for (Index = 0; Index < VolumesCount; ++Index) {
Volume = Volumes[Index];
if (!Volume->RootDir) {
continue;
}
/* Guid = FindGPTPartitionGuidInDevicePath (Volume->DevicePath);
DBG (" %2d. Volume '%s', GUID = %g", Index, Volume->VolName, Guid);
if (Guid == NULL) {
// not a GUID partition
DBG (" - not GPT");
} */
// check if nvram.plist exists
Status = Volume->RootDir->Open (Volume->RootDir, &FileHandle, L"nvram.plist", EFI_FILE_MODE_READ, 0);
if (EFI_ERROR(Status)) {
// DBG (" - no nvram.plist - skipping!\n");
continue;
}
if (GlobalConfig.FastBoot) {
VolumeWithLatestNvramPlist = Volume;
break;
}
// get nvram.plist modification date
FileInfo = EfiLibFileInfo(FileHandle);
if (FileInfo == NULL) {
// DBG (" - no nvram.plist file info - skipping!\n");
FileHandle->Close(FileHandle);
continue;
}
// DBG (" Modified = ");
ModifTimeMs = GetEfiTimeInMs (&FileInfo->ModificationTime);
/* DBG ("%d-%d-%d %d:%d:%d (%ld ms)",
FileInfo->ModificationTime.Year, FileInfo->ModificationTime.Month, FileInfo->ModificationTime.Day,
FileInfo->ModificationTime.Hour, FileInfo->ModificationTime.Minute, FileInfo->ModificationTime.Second,
ModifTimeMs); */
FreePool (FileInfo);
FileHandle->Close(FileHandle);
// check if newer
if (LastModifTimeMs < ModifTimeMs) {
// DBG (" - newer - will use this one\n");
VolumeWithLatestNvramPlist = Volume;
LastModifTimeMs = ModifTimeMs;
} else {
// DBG (" - older - skipping!\n");
}
}
Status = EFI_NOT_FOUND;
//
// if we have nvram.plist - load it
//
if (VolumeWithLatestNvramPlist != NULL) {
DBG ("Loading nvram.plist from Vol '%s' -", VolumeWithLatestNvramPlist->VolName);
Status = LoadNvramPlist (VolumeWithLatestNvramPlist->RootDir, L"nvram.plist");
} else {
// DBG (" nvram.plist not found!\n");
}
return Status;
}
/** Puts all vars from nvram.plist to RT vars. Should be used in CloverEFI only
* or if some UEFI boot uses EmuRuntimeDxe driver.
*/
VOID
PutNvramPlistToRtVars ()
{
EFI_STATUS Status;
TagPtr Tag;
TagPtr ValTag;
INTN Size, i;
CHAR16 KeyBuf[128];
VOID *Value;
if (gNvramDict == NULL) {
Status = LoadLatestNvramPlist ();
if (gNvramDict == NULL) {
DBG ("PutNvramPlistToRtVars: nvram.plist not found\n");
return;
}
}
DbgHeader("PutNvramPlistToRtVars");
// DBG ("PutNvramPlistToRtVars ...\n");
// iterate over dict elements
for (Tag = gNvramDict->tag; Tag != NULL; Tag = Tag->tagNext) {
EFI_GUID *VendorGuid = &gEfiAppleBootGuid;
Value = NULL;
ValTag = (TagPtr)Tag->tag;
// process only valid <key> tags
if (Tag->type != kTagTypeKey || ValTag == NULL) {
DBG (" ERROR: Tag is not <key>, type = %d\n", Tag->type);
continue;
}
// DBG("tag: %a\n", Tag->string);
// skip OsxAptioFixDrv-RelocBase - appears and causes trouble
// in kernel and kext patcher when mixing UEFI and CloverEFI boot
if (AsciiStrCmp (Tag->string, "OsxAptioFixDrv-RelocBase") == 0) {
DBG (" Skipping OsxAptioFixDrv-RelocBase\n");
continue;
} else if (AsciiStrCmp (Tag->string, "OsxAptioFixDrv-ErrorExitingBootServices") == 0) {
DBG (" Skipping OsxAptioFixDrv-ErrorExitingBootServices\n");
continue;
} else if (AsciiStrCmp (Tag->string, "EmuVariableUefiPresent") == 0) {
DBG (" Skipping EmuVariableUefiPresent\n");
continue;
} else if (AsciiStrCmp (Tag->string, "aapl,panic-info") == 0) {
DBG (" Skipping aapl,panic-info\n");
continue;
}
// key to unicode; check if key buffer is large enough
if (AsciiStrLen (Tag->string) > (sizeof(KeyBuf) / 2 - 1)) {
DBG (" ERROR: Skipping too large key %s\n", Tag->string);
continue;
}
if (AsciiStrCmp (Tag->string, "Boot0082") == 0 || AsciiStrCmp (Tag->string, "BootNext") == 0) {
VendorGuid = &gEfiGlobalVariableGuid;
// it may happen only in this case
GlobalConfig.HibernationFixup = TRUE;
}
AsciiStrToUnicodeStrS(Tag->string, KeyBuf, 128);
if (!GlobalConfig.DebugLog) {
DBG (" Adding Key: %s: ", KeyBuf);
}
// process value tag
if (ValTag->type == kTagTypeString) {
// <string> element
Value = ValTag->string;
Size = AsciiStrLen (Value);
if (!GlobalConfig.DebugLog) {
DBG ("String: Size = %d, Val = '%a'\n", Size, Value);
}
} else if (ValTag->type == kTagTypeData) {
// <data> element
Size = ValTag->dataLen;
Value = ValTag->data;
if (!GlobalConfig.DebugLog) {
DBG ("Size = %d, Data: ", Size);
for (i = 0; i < Size; i++) {
DBG("%02x ", *((UINT8*)Value + i));
}
}
if (!GlobalConfig.DebugLog) {
DBG ("\n");
}
} else {
DBG ("ERROR: Unsupported tag type: %d\n", ValTag->type);
continue;
}
if (Size == 0 || !Value) {
continue;
}
// set RT var: all vars visible in nvram.plist are gEfiAppleBootGuid
/* Status = gRS->SetVariable (
KeyBuf,
VendorGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
Size,
Value
); */
SetNvramVariable (
KeyBuf,
VendorGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
Size,
Value
);
}
}
/** Performs detailed search for Startup Disk or last Clover boot volume
* by looking for gEfiAppleBootGuid:efi-boot-device-data and BootCampHD RT vars.
* Returns MainMenu entry index or -1 if not found.
*/
INTN
FindStartupDiskVolume (
REFIT_MENU_SCREEN *MainMenu
)
{
INTN Index;
LEGACY_ENTRY *LegacyEntry;
LOADER_ENTRY *LoaderEntry;
REFIT_VOLUME *Volume;
REFIT_VOLUME *DiskVolume;
BOOLEAN IsPartitionVolume;
CHAR16 *LoaderPath;
CHAR16 *EfiBootVolumeStr;
// DBG ("FindStartupDiskVolume ...\n");
//
// search RT vars for efi-boot-device-data
// and try to find that volume
//
GetEfiBootDeviceFromNvram ();
if (gEfiBootVolume == NULL) {
// DBG (" - [!] EfiBootVolume not found\n");
return -1;
}
DbgHeader("FindStartupDiskVolume");
// DBG ("FindStartupDiskVolume searching ...\n");
//
// Check if gEfiBootVolume is disk or partition volume
//
EfiBootVolumeStr = FileDevicePathToStr (gEfiBootVolume);
IsPartitionVolume = NULL != FindDevicePathNodeWithType (gEfiBootVolume, MEDIA_DEVICE_PATH, 0);
DBG (" - Volume: %s = %s\n", IsPartitionVolume ? L"partition" : L"disk", EfiBootVolumeStr);
//
// 1. gEfiBootVolume + gEfiBootLoaderPath
// PciRoot(0x0)/.../Sata(...)/HD(...)/\EFI\BOOT\XXX.EFI - set by Clover
//
if (gEfiBootLoaderPath != NULL) {
DBG (" - searching for that partition and loader '%s'\n", gEfiBootLoaderPath);
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
LoaderPath = LoaderEntry->LoaderPath;
if (Volume != NULL && BootVolumeDevicePathEqual(gEfiBootVolume, Volume->DevicePath)) {
//DBG (" checking '%s'\n", DevicePathToStr (Volume->DevicePath));
//DBG (" '%s'\n", LoaderPath);
// case insensitive cmp
if (LoaderPath != NULL && StriCmp(gEfiBootLoaderPath, LoaderPath) == 0) {
// that's the one
DBG (" - found entry %d. '%s', Volume '%s', '%s'\n", Index, LoaderEntry->me.Title, Volume->VolName, LoaderPath);
return Index;
}
}
}
}
DBG (" - [!] not found\n");
//
// search again, but compare only Media dev path nodes
// (in case of some dev path differences we do not cover)
//
DBG (" - searching again, but comparing Media dev path nodes\n");
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
LoaderPath = LoaderEntry->LoaderPath;
if (Volume != NULL && BootVolumeMediaDevicePathNodesEqual (gEfiBootVolume, Volume->DevicePath)) {
//DBG (" checking '%s'\n", DevicePathToStr (Volume->DevicePath));
//DBG (" '%s'\n", LoaderPath);
// case insensitive cmp
if (LoaderPath != NULL && StriCmp(gEfiBootLoaderPath, LoaderPath) == 0) {
// that's the one
DBG (" - found entry %d. '%s', Volume '%s', '%s'\n", Index, LoaderEntry->me.Title, Volume->VolName, LoaderPath);
return Index;
}
}
}
}
DBG (" - [!] not found\n");
}
//
// 2. gEfiBootVolume - partition volume
// PciRoot(0x0)/.../Sata(...)/HD(...) - set by Clover or macOS
//
if (IsPartitionVolume) {
DBG (" - searching for that partition\n");
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
Volume = NULL;
if (MainMenu->Entries[Index]->Tag == TAG_LEGACY) {
LegacyEntry = (LEGACY_ENTRY *)MainMenu->Entries[Index];
Volume = LegacyEntry->Volume;
} else if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
}
if (Volume != NULL && BootVolumeDevicePathEqual (gEfiBootVolume, Volume->DevicePath)) {
DBG (" - found entry %d. '%s', Volume '%s'\n", Index, MainMenu->Entries[Index]->Title, Volume->VolName);
return Index;
}
}
DBG (" - [!] not found\n");
//
// search again, but compare only Media dev path nodes
//
DBG (" - searching again, but comparing Media dev path nodes\n");
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
Volume = NULL;
if (MainMenu->Entries[Index]->Tag == TAG_LEGACY) {
LegacyEntry = (LEGACY_ENTRY *)MainMenu->Entries[Index];
Volume = LegacyEntry->Volume;
} else if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
}
if (Volume != NULL && BootVolumeMediaDevicePathNodesEqual (gEfiBootVolume, Volume->DevicePath)) {
DBG (" - found entry %d. '%s', Volume '%s'\n", Index, MainMenu->Entries[Index]->Title, Volume->VolName);
return Index;
}
}
DBG (" - [!] not found\n");
return -1;
}
//
// 3. gEfiBootVolume - disk volume
// PciRoot(0x0)/.../Sata(...) - set by macOS for Win boot
//
// 3.1 First find disk volume in Volumes[]
//
DiskVolume = NULL;
DBG (" - searching for that disk\n");
for (Index = 0; Index < (INTN)VolumesCount; ++Index) {
Volume = Volumes[Index];
if (BootVolumeDevicePathEqual (gEfiBootVolume, Volume->DevicePath)) {
// that's the one
DiskVolume = Volume;
DBG (" - found disk as volume %d. '%s'\n", Index, Volume->VolName);
break;
}
}
if (DiskVolume == NULL) {
DBG (" - [!] not found\n");
return -1;
}
//
// 3.2 DiskVolume
// search for first entry with win loader or win partition on that disk
//
DBG (" - searching for first entry with win loader or win partition on that disk\n");
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
if (MainMenu->Entries[Index]->Tag == TAG_LEGACY) {
LegacyEntry = (LEGACY_ENTRY *)MainMenu->Entries[Index];
Volume = LegacyEntry->Volume;
if (Volume != NULL && Volume->WholeDiskBlockIO == DiskVolume->BlockIO) {
// check for Win
//DBG (" checking legacy entry %d. %s\n", Index, LegacyEntry->me.Title);
//DBG (" %s\n", DevicePathToStr (Volume->DevicePath));
//DBG (" OSType = %d\n", Volume->OSType);
if (Volume->LegacyOS->Type == OSTYPE_WIN) {
// that's the one - legacy win partition
DBG (" - found legacy entry %d. '%s', Volume '%s'\n", Index, LegacyEntry->me.Title, Volume->VolName);
return Index;
}
}
} else if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
if (Volume != NULL && Volume->WholeDiskBlockIO == DiskVolume->BlockIO) {
// check for Win
//DBG (" checking loader entry %d. %s\n", Index, LoaderEntry->me.Title);
//DBG (" %s\n", DevicePathToStr (Volume->DevicePath));
//DBG (" LoaderPath = %s\n", LoaderEntry->LoaderPath);
//DBG (" LoaderType = %d\n", LoaderEntry->LoaderType);
if (LoaderEntry->LoaderType == OSTYPE_WINEFI) {
// that's the one - win loader entry
DBG (" - found loader entry %d. '%s', Volume '%s', '%s'\n", Index, LoaderEntry->me.Title, Volume->VolName, LoaderEntry->LoaderPath);
return Index;
}
}
}
}
DBG (" - [!] not found\n");
//
// 3.3 DiskVolume, but no Win entry
// PciRoot(0x0)/.../Sata(...)
// just find first menu entry on that disk?
//
DBG (" - searching for any entry from disk '%s'\n", DiskVolume->VolName);
for (Index = 0; ((Index < (INTN)MainMenu->EntryCount) && (MainMenu->Entries[Index]->Row == 0)); ++Index) {
if (MainMenu->Entries[Index]->Tag == TAG_LEGACY) {
LegacyEntry = (LEGACY_ENTRY *)MainMenu->Entries[Index];
Volume = LegacyEntry->Volume;
if (Volume != NULL && Volume->WholeDiskBlockIO == DiskVolume->BlockIO) {
// that's the one
DBG (" - found legacy entry %d. '%s', Volume '%s'\n", Index, LegacyEntry->me.Title, Volume->VolName);
return Index;
}
} else if (MainMenu->Entries[Index]->Tag == TAG_LOADER) {
LoaderEntry = (LOADER_ENTRY *)MainMenu->Entries[Index];
Volume = LoaderEntry->Volume;
if (Volume != NULL && Volume->WholeDiskBlockIO == DiskVolume->BlockIO) {
// that's the one
DBG (" - found loader entry %d. '%s', Volume '%s', '%s'\n", Index, LoaderEntry->me.Title, Volume->VolName, LoaderEntry->LoaderPath);
return Index;
}
}
}
DBG (" - [!] not found\n");
return -1;
}
/** Sets efi-boot-device-data RT var to currently selected Volume and LoadePath. */
EFI_STATUS SetStartupDiskVolume (
IN REFIT_VOLUME *Volume,
IN CHAR16 *LoaderPath
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *DevPath;
EFI_DEVICE_PATH_PROTOCOL *FileDevPath;
EFI_GUID *Guid;
CHAR8 *EfiBootDevice;
CHAR8 *EfiBootDeviceTmpl;
UINTN Size;
UINT32 Attributes;
DBG ("SetStartupDiskVolume:\n");
DBG (" * Volume: '%s'\n", Volume->VolName);
DBG (" * LoaderPath: '%s'\n", LoaderPath);
//
// construct dev path for Volume/LoaderPath
//
DevPath = Volume->DevicePath;
if (LoaderPath != NULL) {
FileDevPath = FileDevicePath (NULL, LoaderPath);
DevPath = AppendDevicePathNode (DevPath, FileDevPath);
}
DBG (" * DevPath: %s\n", Volume->VolName, FileDevicePathToStr (DevPath));
Guid = FindGPTPartitionGuidInDevicePath (Volume->DevicePath);
DBG (" * GUID = %g\n", Guid);
//
// let's save it without EFI_VARIABLE_NON_VOLATILE in CloverEFI like other vars so far
//
if (!gFirmwareClover && !gDriversFlags.EmuVariableLoaded) {
Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;
} else {
Attributes = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;
}
//
// set efi-boot-device-data to volume dev path
//
Status = SetNvramVariable (L"efi-boot-device-data", &gEfiAppleBootGuid, Attributes, GetDevicePathSize(DevPath), DevPath);
if (EFI_ERROR(Status)) {
return Status;
}
//
// set efi-boot-device to XML string
// (probably not needed at all)
//
if (Guid != NULL) {
EfiBootDeviceTmpl =
"<array><dict>"
"<key>IOMatch</key>"
"<dict>"
"<key>IOProviderClass</key><string>IOMedia</string>"
"<key>IOPropertyMatch</key>"
"<dict><key>UUID</key><string>%g</string></dict>"
"</dict>"
"</dict></array>";
Size = AsciiStrLen (EfiBootDeviceTmpl) + 36;
EfiBootDevice = AllocateZeroPool(AsciiStrLen (EfiBootDeviceTmpl) + 36);
AsciiSPrint (EfiBootDevice, Size, EfiBootDeviceTmpl, Guid);
Size = AsciiStrLen (EfiBootDevice);
DBG (" * efi-boot-device: %a\n", EfiBootDevice);
Status = SetNvramVariable (L"efi-boot-device", &gEfiAppleBootGuid, Attributes, Size, EfiBootDevice);
FreePool (EfiBootDevice);
}
return Status;
}
/** Deletes Startup disk vars: efi-boot-device, efi-boot-device-data, BootCampHD. */
VOID
RemoveStartupDiskVolume ()
{
// EFI_STATUS Status;
// DBG ("RemoveStartupDiskVolume:\n");
/*Status =*/ DeleteNvramVariable (L"efi-boot-device", &gEfiAppleBootGuid);
// DBG (" * efi-boot-device = %r\n", Status);
/*Status =*/ DeleteNvramVariable (L"efi-boot-device-data", &gEfiAppleBootGuid);
// DBG (" * efi-boot-device-data = %r\n", Status);
/*Status =*/ DeleteNvramVariable (L"BootCampHD", &gEfiAppleBootGuid);
// DBG (" * BootCampHD = %r\n", Status);
// DBG ("Removed efi-boot-device-data variable: %r\n", Status);
}
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