/*++
Copyright (c) 1998 Intel Corporation
Module Name:
dpath.c
Abstract:
MBR & Device Path functions
Revision History
--*/
#include "lib.h"
#define ALIGN_SIZE(a) ((a % MIN_ALIGNMENT_SIZE) ? MIN_ALIGNMENT_SIZE - (a % MIN_ALIGNMENT_SIZE) : 0)
EFI_DEVICE_PATH *
DevicePathFromHandle (
IN EFI_HANDLE Handle
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH *DevicePath;
Status = BS->HandleProtocol (Handle, &DevicePathProtocol, (VOID*)&DevicePath);
if (EFI_ERROR(Status)) {
DevicePath = NULL;
}
return DevicePath;
}
EFI_DEVICE_PATH *
DevicePathInstance (
IN OUT EFI_DEVICE_PATH **DevicePath,
OUT UINTN *Size
)
{
EFI_DEVICE_PATH *Start, *Next, *DevPath;
UINTN Count;
DevPath = *DevicePath;
Start = DevPath;
if (!DevPath) {
return NULL;
}
//
// Check for end of device path type
//
for (Count = 0; ; Count++) {
Next = NextDevicePathNode(DevPath);
if (IsDevicePathEndType(DevPath)) {
break;
}
if (Count > 01000) {
//
// BugBug: Debug code to catch bogus device paths
//
DEBUG((D_ERROR, "DevicePathInstance: DevicePath %x Size %d", *DevicePath, ((UINT8 *) DevPath) - ((UINT8 *) Start) ));
DumpHex (0, 0, ((UINT8 *) DevPath) - ((UINT8 *) Start), Start);
break;
}
DevPath = Next;
}
ASSERT (DevicePathSubType(DevPath) == END_ENTIRE_DEVICE_PATH_SUBTYPE ||
DevicePathSubType(DevPath) == END_INSTANCE_DEVICE_PATH_SUBTYPE);
//
// Set next position
//
if (DevicePathSubType(DevPath) == END_ENTIRE_DEVICE_PATH_SUBTYPE) {
Next = NULL;
}
*DevicePath = Next;
//
// Return size and start of device path instance
//
*Size = ((UINT8 *) DevPath) - ((UINT8 *) Start);
return Start;
}
UINTN
DevicePathInstanceCount (
IN EFI_DEVICE_PATH *DevicePath
)
{
UINTN Count, Size;
Count = 0;
while (DevicePathInstance(&DevicePath, &Size)) {
Count += 1;
}
return Count;
}
EFI_DEVICE_PATH *
AppendDevicePath (
IN EFI_DEVICE_PATH *Src1,
IN EFI_DEVICE_PATH *Src2
)
// Src1 may have multiple "instances" and each instance is appended
// Src2 is appended to each instance is Src1. (E.g., it's possible
// to append a new instance to the complete device path by passing
// it in Src2)
{
UINTN Src1Size, Src1Inst, Src2Size, Size;
EFI_DEVICE_PATH *Dst, *Inst;
UINT8 *DstPos;
//
// If there's only 1 path, just duplicate it
//
if (!Src1) {
ASSERT (!IsDevicePathUnpacked (Src2));
return DuplicateDevicePath (Src2);
}
if (!Src2) {
ASSERT (!IsDevicePathUnpacked (Src1));
return DuplicateDevicePath (Src1);
}
//
// Verify we're not working with unpacked paths
//
// ASSERT (!IsDevicePathUnpacked (Src1));
// ASSERT (!IsDevicePathUnpacked (Src2));
//
// Append Src2 to every instance in Src1
//
Src1Size = DevicePathSize(Src1);
Src1Inst = DevicePathInstanceCount(Src1);
Src2Size = DevicePathSize(Src2);
Size = Src1Size * Src1Inst + Src2Size;
Dst = AllocatePool (Size);
if (Dst) {
DstPos = (UINT8 *) Dst;
//
// Copy all device path instances
//
while ((Inst = DevicePathInstance (&Src1, &Size))) {
CopyMem(DstPos, Inst, Size);
DstPos += Size;
CopyMem(DstPos, Src2, Src2Size);
DstPos += Src2Size;
CopyMem(DstPos, EndInstanceDevicePath, sizeof(EFI_DEVICE_PATH));
DstPos += sizeof(EFI_DEVICE_PATH);
}
// Change last end marker
DstPos -= sizeof(EFI_DEVICE_PATH);
CopyMem(DstPos, EndDevicePath, sizeof(EFI_DEVICE_PATH));
}
return Dst;
}
EFI_DEVICE_PATH *
AppendDevicePathNode (
IN EFI_DEVICE_PATH *Src1,
IN EFI_DEVICE_PATH *Src2
)
// Src1 may have multiple "instances" and each instance is appended
// Src2 is a signal device path node (without a terminator) that is
// appended to each instance is Src1.
{
EFI_DEVICE_PATH *Temp, *Eop;
UINTN Length;
//
// Build a Src2 that has a terminator on it
//
Length = DevicePathNodeLength(Src2);
Temp = AllocatePool (Length + sizeof(EFI_DEVICE_PATH));
if (!Temp) {
return NULL;
}
CopyMem (Temp, Src2, Length);
Eop = NextDevicePathNode(Temp);
SetDevicePathEndNode(Eop);
//
// Append device paths
//
Src1 = AppendDevicePath (Src1, Temp);
FreePool (Temp);
return Src1;
}
EFI_DEVICE_PATH *
FileDevicePath (
IN EFI_HANDLE Device OPTIONAL,
IN CHAR16 *FileName
)
/*++
N.B. Results are allocated from pool. The caller must FreePool
the resulting device path structure
--*/
{
UINTN Size;
FILEPATH_DEVICE_PATH *FilePath;
EFI_DEVICE_PATH *Eop, *DevicePath;
Size = StrSize(FileName);
FilePath = AllocateZeroPool (Size + SIZE_OF_FILEPATH_DEVICE_PATH + sizeof(EFI_DEVICE_PATH));
DevicePath = NULL;
if (FilePath) {
//
// Build a file path
//
FilePath->Header.Type = MEDIA_DEVICE_PATH;
FilePath->Header.SubType = MEDIA_FILEPATH_DP;
SetDevicePathNodeLength (&FilePath->Header, Size + SIZE_OF_FILEPATH_DEVICE_PATH);
CopyMem (FilePath->PathName, FileName, Size);
Eop = NextDevicePathNode(&FilePath->Header);
SetDevicePathEndNode(Eop);
//
// Append file path to device's device path
//
DevicePath = (EFI_DEVICE_PATH *) FilePath;
if (Device) {
DevicePath = AppendDevicePath (
DevicePathFromHandle(Device),
DevicePath
);
FreePool(FilePath);
}
}
return DevicePath;
}
UINTN
DevicePathSize (
IN EFI_DEVICE_PATH *DevPath
)
{
EFI_DEVICE_PATH *Start;
//
// Search for the end of the device path structure
//
Start = DevPath;
while (!IsDevicePathEnd(DevPath)) {
DevPath = NextDevicePathNode(DevPath);
}
//
// Compute the size
//
return ((UINTN) DevPath - (UINTN) Start) + sizeof(EFI_DEVICE_PATH);
}
EFI_DEVICE_PATH *
DuplicateDevicePath (
IN EFI_DEVICE_PATH *DevPath
)
{
EFI_DEVICE_PATH *NewDevPath;
UINTN Size;
//
// Compute the size
//
Size = DevicePathSize (DevPath);
//
// Make a copy
//
NewDevPath = AllocatePool (Size);
if (NewDevPath) {
CopyMem (NewDevPath, DevPath, Size);
}
return NewDevPath;
}
EFI_DEVICE_PATH *
UnpackDevicePath (
IN EFI_DEVICE_PATH *DevPath
)
{
EFI_DEVICE_PATH *Src, *Dest, *NewPath;
UINTN Size;
//
// Walk device path and round sizes to valid boundries
//
Src = DevPath;
Size = 0;
for (; ;) {
Size += DevicePathNodeLength(Src);
Size += ALIGN_SIZE(Size);
if (IsDevicePathEnd(Src)) {
break;
}
Src = NextDevicePathNode(Src);
}
//
// Allocate space for the unpacked path
//
NewPath = AllocateZeroPool (Size);
if (NewPath) {
ASSERT (((UINTN)NewPath) % MIN_ALIGNMENT_SIZE == 0);
//
// Copy each node
//
Src = DevPath;
Dest = NewPath;
for (; ;) {
Size = DevicePathNodeLength(Src);
CopyMem (Dest, Src, Size);
Size += ALIGN_SIZE(Size);
SetDevicePathNodeLength (Dest, Size);
Dest->Type |= EFI_DP_TYPE_UNPACKED;
Dest = (EFI_DEVICE_PATH *) (((UINT8 *) Dest) + Size);
if (IsDevicePathEnd(Src)) {
break;
}
Src = NextDevicePathNode(Src);
}
}
return NewPath;
}
EFI_DEVICE_PATH*
AppendDevicePathInstance (
IN EFI_DEVICE_PATH *Src,
IN EFI_DEVICE_PATH *Instance
)
{
UINT8 *Ptr;
EFI_DEVICE_PATH *DevPath;
UINTN SrcSize;
UINTN InstanceSize;
if (Src == NULL) {
return DuplicateDevicePath (Instance);
}
SrcSize = DevicePathSize(Src);
InstanceSize = DevicePathSize(Instance);
Ptr = AllocatePool (SrcSize + InstanceSize);
DevPath = (EFI_DEVICE_PATH *)Ptr;
ASSERT(DevPath);
CopyMem (Ptr, Src, SrcSize);
// FreePool (Src);
while (!IsDevicePathEnd(DevPath)) {
DevPath = NextDevicePathNode(DevPath);
}
//
// Convert the End to an End Instance, since we are
// appending another instacne after this one its a good
// idea.
//
DevPath->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE;
DevPath = NextDevicePathNode(DevPath);
CopyMem (DevPath, Instance, InstanceSize);
return (EFI_DEVICE_PATH *)Ptr;
}
EFI_STATUS
LibDevicePathToInterface (
IN EFI_GUID *Protocol,
IN EFI_DEVICE_PATH *FilePath,
OUT VOID **Interface
)
{
EFI_STATUS Status;
EFI_HANDLE Device;
Status = BS->LocateDevicePath (Protocol, &FilePath, &Device);
if (!EFI_ERROR(Status)) {
// If we didn't get a direct match return not found
Status = EFI_NOT_FOUND;
if (IsDevicePathEnd(FilePath)) {
//
// It was a direct match, lookup the protocol interface
//
Status = BS->HandleProtocol (Device, Protocol, Interface);
}
}
//
// If there was an error, do not return an interface
//
if (EFI_ERROR(Status)) {
*Interface = NULL;
}
return Status;
}
VOID
_DevPathPci (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
PCI_DEVICE_PATH *Pci;
Pci = DevPath;
CatPrint(Str, L"Pci(%x|%x)", Pci->Device, Pci->Function);
}
VOID
_DevPathPccard (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
PCCARD_DEVICE_PATH *Pccard;
Pccard = DevPath;
CatPrint(Str, L"Pccard(Socket%x)", Pccard->SocketNumber);
}
VOID
_DevPathMemMap (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
MEMMAP_DEVICE_PATH *MemMap;
MemMap = DevPath;
CatPrint(Str, L"MemMap(%d:%x-%x)",
MemMap->MemoryType,
MemMap->StartingAddress,
MemMap->EndingAddress
);
}
VOID
_DevPathController (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
CONTROLLER_DEVICE_PATH *Controller;
Controller = DevPath;
CatPrint(Str, L"Ctrl(%d)",
Controller->Controller
);
}
VOID
_DevPathVendor (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
VENDOR_DEVICE_PATH *Vendor;
CHAR16 *Type;
UNKNOWN_DEVICE_VENDOR_DEVICE_PATH *UnknownDevPath;
Vendor = DevPath;
switch (DevicePathType(&Vendor->Header)) {
case HARDWARE_DEVICE_PATH: Type = L"Hw"; break;
case MESSAGING_DEVICE_PATH: Type = L"Msg"; break;
case MEDIA_DEVICE_PATH: Type = L"Media"; break;
default: Type = L"?"; break;
}
CatPrint(Str, L"Ven%s(%g", Type, &Vendor->Guid);
if (CompareGuid (&Vendor->Guid, &UnknownDevice) == 0) {
//
// GUID used by EFI to enumerate an EDD 1.1 device
//
UnknownDevPath = (UNKNOWN_DEVICE_VENDOR_DEVICE_PATH *)Vendor;
CatPrint(Str, L":%02x)", UnknownDevPath->LegacyDriveLetter);
} else {
CatPrint(Str, L")");
}
}
VOID
_DevPathAcpi (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
ACPI_HID_DEVICE_PATH *Acpi;
Acpi = DevPath;
if ((Acpi->HID & PNP_EISA_ID_MASK) == PNP_EISA_ID_CONST) {
CatPrint(Str, L"Acpi(PNP%04x,%x)", EISA_ID_TO_NUM (Acpi->HID), Acpi->UID);
} else {
CatPrint(Str, L"Acpi(%08x,%x)", Acpi->HID, Acpi->UID);
}
}
VOID
_DevPathAtapi (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
ATAPI_DEVICE_PATH *Atapi;
Atapi = DevPath;
CatPrint(Str, L"Ata(%s,%s)",
Atapi->PrimarySecondary ? L"Secondary" : L"Primary",
Atapi->SlaveMaster ? L"Slave" : L"Master"
);
}
VOID
_DevPathScsi (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
SCSI_DEVICE_PATH *Scsi;
Scsi = DevPath;
CatPrint(Str, L"Scsi(Pun%x,Lun%x)", Scsi->Pun, Scsi->Lun);
}
VOID
_DevPathFibre (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
FIBRECHANNEL_DEVICE_PATH *Fibre;
Fibre = DevPath;
CatPrint(Str, L"Fibre(%lx)", Fibre->WWN);
}
VOID
_DevPath1394 (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
F1394_DEVICE_PATH *F1394;
F1394 = DevPath;
CatPrint(Str, L"1394(%g)", &F1394->Guid);
}
VOID
_DevPathUsb (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
USB_DEVICE_PATH *Usb;
Usb = DevPath;
CatPrint(Str, L"Usb(%x)", Usb->Port);
}
VOID
_DevPathI2O (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
I2O_DEVICE_PATH *I2O;
I2O = DevPath;
CatPrint(Str, L"I2O(%x)", I2O->Tid);
}
VOID
_DevPathMacAddr (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
MAC_ADDR_DEVICE_PATH *MAC;
UINTN HwAddressSize;
UINTN Index;
MAC = DevPath;
HwAddressSize = sizeof(EFI_MAC_ADDRESS);
if (MAC->IfType == 0x01 || MAC->IfType == 0x00) {
HwAddressSize = 6;
}
CatPrint(Str, L"Mac(");
for(Index = 0; Index < HwAddressSize; Index++) {
CatPrint(Str, L"%02x",MAC->MacAddress.Addr[Index]);
}
CatPrint(Str, L")");
}
VOID
_DevPathIPv4 (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
IPv4_DEVICE_PATH *IP;
IP = DevPath;
CatPrint(Str, L"IPv4(not-done)");
}
VOID
_DevPathIPv6 (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
IPv6_DEVICE_PATH *IP;
IP = DevPath;
CatPrint(Str, L"IP-v6(not-done)");
}
VOID
_DevPathInfiniBand (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
INFINIBAND_DEVICE_PATH *InfiniBand;
InfiniBand = DevPath;
CatPrint(Str, L"InfiniBand(not-done)");
}
VOID
_DevPathUart (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
UART_DEVICE_PATH *Uart;
CHAR8 Parity;
Uart = DevPath;
switch (Uart->Parity) {
case 0 : Parity = 'D'; break;
case 1 : Parity = 'N'; break;
case 2 : Parity = 'E'; break;
case 3 : Parity = 'O'; break;
case 4 : Parity = 'M'; break;
case 5 : Parity = 'S'; break;
default : Parity = 'x'; break;
}
if (Uart->BaudRate == 0) {
CatPrint(Str, L"Uart(DEFAULT %c",Uart->BaudRate,Parity);
} else {
CatPrint(Str, L"Uart(%d %c",Uart->BaudRate,Parity);
}
if (Uart->DataBits == 0) {
CatPrint(Str, L"D");
} else {
CatPrint(Str, L"%d",Uart->DataBits);
}
switch (Uart->StopBits) {
case 0 : CatPrint(Str, L"D)"); break;
case 1 : CatPrint(Str, L"1)"); break;
case 2 : CatPrint(Str, L"1.5)"); break;
case 3 : CatPrint(Str, L"2)"); break;
default : CatPrint(Str, L"x)"); break;
}
}
VOID
_DevPathHardDrive (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
HARDDRIVE_DEVICE_PATH *Hd;
Hd = DevPath;
switch (Hd->SignatureType) {
case SIGNATURE_TYPE_MBR:
CatPrint(Str, L"HD(Part%d,Sig%08X)",
Hd->PartitionNumber,
*((UINT32 *)(&(Hd->Signature[0])))
);
break;
case SIGNATURE_TYPE_GUID:
CatPrint(Str, L"HD(Part%d,Sig%g)",
Hd->PartitionNumber,
(EFI_GUID *) &(Hd->Signature[0])
);
break;
default:
CatPrint(Str, L"HD(Part%d,MBRType=%02x,SigType=%02x)",
Hd->PartitionNumber,
Hd->MBRType,
Hd->SignatureType
);
break;
}
}
VOID
_DevPathCDROM (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
CDROM_DEVICE_PATH *Cd;
Cd = DevPath;
CatPrint(Str, L"CDROM(Entry%x)", Cd->BootEntry);
}
VOID
_DevPathFilePath (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
FILEPATH_DEVICE_PATH *Fp;
Fp = DevPath;
CatPrint(Str, L"%s", Fp->PathName);
}
VOID
_DevPathMediaProtocol (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
MEDIA_PROTOCOL_DEVICE_PATH *MediaProt;
MediaProt = DevPath;
CatPrint(Str, L"%g", &MediaProt->Protocol);
}
VOID
_DevPathBssBss (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
BBS_BBS_DEVICE_PATH *Bss;
CHAR16 *Type;
Bss = DevPath;
switch (Bss->DeviceType) {
case BBS_TYPE_FLOPPY: Type = L"Floppy"; break;
case BBS_TYPE_HARDDRIVE: Type = L"Harddrive"; break;
case BBS_TYPE_CDROM: Type = L"CDROM"; break;
case BBS_TYPE_PCMCIA: Type = L"PCMCIA"; break;
case BBS_TYPE_USB: Type = L"Usb"; break;
case BBS_TYPE_EMBEDDED_NETWORK: Type = L"Net"; break;
default: Type = L"?"; break;
}
CatPrint(Str, L"Bss-%s(%a)", Type, Bss->String);
}
VOID
_DevPathEndInstance (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
CatPrint(Str, L",");
}
VOID
_DevPathNodeUnknown (
IN OUT POOL_PRINT *Str,
IN VOID *DevPath
)
{
CatPrint(Str, L"?");
}
struct {
UINT8 Type;
UINT8 SubType;
VOID (*Function)(POOL_PRINT *, VOID *);
} DevPathTable[] = {
{ HARDWARE_DEVICE_PATH, HW_PCI_DP, _DevPathPci},
{ HARDWARE_DEVICE_PATH, HW_PCCARD_DP, _DevPathPccard},
{ HARDWARE_DEVICE_PATH, HW_MEMMAP_DP, _DevPathMemMap},
{ HARDWARE_DEVICE_PATH, HW_VENDOR_DP, _DevPathVendor},
{ HARDWARE_DEVICE_PATH, HW_CONTROLLER_DP, _DevPathController},
{ ACPI_DEVICE_PATH, ACPI_DP, _DevPathAcpi},
{ MESSAGING_DEVICE_PATH, MSG_ATAPI_DP, _DevPathAtapi},
{ MESSAGING_DEVICE_PATH, MSG_SCSI_DP, _DevPathScsi},
{ MESSAGING_DEVICE_PATH, MSG_FIBRECHANNEL_DP, _DevPathFibre},
{ MESSAGING_DEVICE_PATH, MSG_1394_DP, _DevPath1394},
{ MESSAGING_DEVICE_PATH, MSG_USB_DP, _DevPathUsb},
{ MESSAGING_DEVICE_PATH, MSG_I2O_DP, _DevPathI2O},
{ MESSAGING_DEVICE_PATH, MSG_MAC_ADDR_DP, _DevPathMacAddr},
{ MESSAGING_DEVICE_PATH, MSG_IPv4_DP, _DevPathIPv4},
{ MESSAGING_DEVICE_PATH, MSG_IPv6_DP, _DevPathIPv6},
{ MESSAGING_DEVICE_PATH, MSG_INFINIBAND_DP, _DevPathInfiniBand},
{ MESSAGING_DEVICE_PATH, MSG_UART_DP, _DevPathUart},
{ MESSAGING_DEVICE_PATH, MSG_VENDOR_DP, _DevPathVendor},
{ MEDIA_DEVICE_PATH, MEDIA_HARDDRIVE_DP, _DevPathHardDrive},
{ MEDIA_DEVICE_PATH, MEDIA_CDROM_DP, _DevPathCDROM},
{ MEDIA_DEVICE_PATH, MEDIA_VENDOR_DP, _DevPathVendor},
{ MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP, _DevPathFilePath},
{ MEDIA_DEVICE_PATH, MEDIA_PROTOCOL_DP, _DevPathMediaProtocol},
{ BBS_DEVICE_PATH, BBS_BBS_DP, _DevPathBssBss},
{ END_DEVICE_PATH_TYPE, END_INSTANCE_DEVICE_PATH_SUBTYPE, _DevPathEndInstance},
{ 0, 0, NULL}
};
CHAR16 *
DevicePathToStr (
EFI_DEVICE_PATH *DevPath
)
/*++
Turns the Device Path into a printable string. Allcoates
the string from pool. The caller must FreePool the returned
string.
--*/
{
POOL_PRINT Str;
EFI_DEVICE_PATH *DevPathNode;
VOID (*DumpNode)(POOL_PRINT *, VOID *);
UINTN Index, NewSize;
ZeroMem(&Str, sizeof(Str));
//
// Unpacked the device path
//
DevPath = UnpackDevicePath(DevPath);
ASSERT (DevPath);
//
// Process each device path node
//
DevPathNode = DevPath;
while (!IsDevicePathEnd(DevPathNode)) {
//
// Find the handler to dump this device path node
//
DumpNode = NULL;
for (Index = 0; DevPathTable[Index].Function; Index += 1) {
if (DevicePathType(DevPathNode) == DevPathTable[Index].Type &&
DevicePathSubType(DevPathNode) == DevPathTable[Index].SubType) {
DumpNode = DevPathTable[Index].Function;
break;
}
}
//
// If not found, use a generic function
//
if (!DumpNode) {
DumpNode = _DevPathNodeUnknown;
}
//
// Put a path seperator in if needed
//
if (Str.len && DumpNode != _DevPathEndInstance) {
CatPrint (&Str, L"/");
}
//
// Print this node of the device path
//
DumpNode (&Str, DevPathNode);
//
// Next device path node
//
DevPathNode = NextDevicePathNode(DevPathNode);
}
//
// Shrink pool used for string allocation
//
FreePool (DevPath);
NewSize = (Str.len + 1) * sizeof(CHAR16);
Str.str = ReallocatePool (Str.str, NewSize, NewSize);
Str.str[Str.len] = 0;
return Str.str;
}
BOOLEAN
LibMatchDevicePaths (
IN EFI_DEVICE_PATH *Multi,
IN EFI_DEVICE_PATH *Single
)
{
EFI_DEVICE_PATH *DevicePath, *DevicePathInst;
UINTN Size;
if (!Multi || !Single) {
return FALSE;
}
DevicePath = Multi;
while ((DevicePathInst = DevicePathInstance (&DevicePath, &Size))) {
if (CompareMem (Single, DevicePathInst, Size) == 0) {
return TRUE;
}
}
return FALSE;
}
EFI_DEVICE_PATH *
LibDuplicateDevicePathInstance (
IN EFI_DEVICE_PATH *DevPath
)
{
EFI_DEVICE_PATH *NewDevPath,*DevicePathInst,*Temp;
UINTN Size;
//
// get the size of an instance from the input
//
Temp = DevPath;
DevicePathInst = DevicePathInstance (&Temp, &Size);
//
// Make a copy and set proper end type
//
NewDevPath = NULL;
if (Size) {
NewDevPath = AllocatePool (Size + sizeof(EFI_DEVICE_PATH));
}
if (NewDevPath) {
CopyMem (NewDevPath, DevicePathInst, Size);
Temp = NextDevicePathNode(NewDevPath);
SetDevicePathEndNode(Temp);
}
return NewDevPath;
}