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beda2356 1/** @file\r
2 The header file of HII Config Access protocol implementation of SecureBoot\r
3 configuration module.\r
4\r
20333c6d 5Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>\r
bc0c99b3 6This program and the accompanying materials\r
7are licensed and made available under the terms and conditions of the BSD License\r
8which accompanies this distribution. The full text of the license may be found at\r
beda2356 9http://opensource.org/licenses/bsd-license.php\r
10\r
bc0c99b3 11THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
beda2356 12WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
13\r
14**/\r
15\r
16#ifndef __SECUREBOOT_CONFIG_IMPL_H__\r
17#define __SECUREBOOT_CONFIG_IMPL_H__\r
18\r
19#include <Uefi.h>\r
20\r
21#include <Protocol/HiiConfigAccess.h>\r
22#include <Protocol/HiiConfigRouting.h>\r
ecc722ad 23#include <Protocol/SimpleFileSystem.h>\r
24#include <Protocol/BlockIo.h>\r
25#include <Protocol/DevicePath.h>\r
ecc722ad 26#include <Protocol/DebugPort.h>\r
27#include <Protocol/LoadFile.h>\r
beda2356 28\r
29#include <Library/BaseLib.h>\r
30#include <Library/BaseMemoryLib.h>\r
31#include <Library/DebugLib.h>\r
32#include <Library/MemoryAllocationLib.h>\r
33#include <Library/UefiBootServicesTableLib.h>\r
34#include <Library/UefiRuntimeServicesTableLib.h>\r
35#include <Library/UefiHiiServicesLib.h>\r
36#include <Library/UefiLib.h>\r
37#include <Library/HiiLib.h>\r
38#include <Library/DevicePathLib.h>\r
bc0c99b3 39#include <Library/PrintLib.h>\r
ecc722ad 40#include <Library/PlatformSecureLib.h>\r
41#include <Library/BaseCryptLib.h>\r
beda2356 42#include <Guid/MdeModuleHii.h>\r
43#include <Guid/AuthenticatedVariableFormat.h>\r
ecc722ad 44#include <Guid/FileSystemVolumeLabelInfo.h>\r
45#include <Guid/ImageAuthentication.h>\r
46#include <Guid/FileInfo.h>\r
beda2356 47\r
48#include "SecureBootConfigNvData.h"\r
49\r
50//\r
51// Tool generated IFR binary data and String package data\r
52//\r
ecc722ad 53extern UINT8 SecureBootConfigBin[];\r
54extern UINT8 SecureBootConfigDxeStrings[];\r
55\r
56//\r
57// Shared IFR form update data\r
58//\r
59extern VOID *mStartOpCodeHandle;\r
60extern VOID *mEndOpCodeHandle;\r
61extern EFI_IFR_GUID_LABEL *mStartLabel;\r
62extern EFI_IFR_GUID_LABEL *mEndLabel;\r
63\r
64#define MAX_CHAR 480\r
65#define TWO_BYTE_ENCODE 0x82\r
66\r
67//\r
68// SHA-1 digest size in bytes.\r
69//\r
70#define SHA1_DIGEST_SIZE 20\r
71//\r
72// SHA-256 digest size in bytes\r
73//\r
74#define SHA256_DIGEST_SIZE 32\r
75//\r
20333c6d 76// SHA-384 digest size in bytes\r
ecc722ad 77//\r
20333c6d
QL		 78#define SHA384_DIGEST_SIZE 48\r
79//\r
80// SHA-512 digest size in bytes\r
81//\r
82#define SHA512_DIGEST_SIZE 64\r
83\r
84//\r
85// Set max digest size as SHA512 Output (64 bytes) by far\r
86//\r
87#define MAX_DIGEST_SIZE SHA512_DIGEST_SIZE\r
ecc722ad 88\r
89#define WIN_CERT_UEFI_RSA2048_SIZE 256\r
90\r
91//\r
92// Support hash types\r
93//\r
94#define HASHALG_SHA1 0x00000000\r
95#define HASHALG_SHA224 0x00000001\r
96#define HASHALG_SHA256 0x00000002\r
97#define HASHALG_SHA384 0x00000003\r
98#define HASHALG_SHA512 0x00000004\r
20333c6d 99#define HASHALG_RAW 0x00000005\r
ecc722ad 100#define HASHALG_MAX 0x00000005\r
101\r
102\r
103#define SECUREBOOT_MENU_OPTION_SIGNATURE SIGNATURE_32 ('S', 'b', 'M', 'u')\r
104#define SECUREBOOT_MENU_ENTRY_SIGNATURE SIGNATURE_32 ('S', 'b', 'M', 'r')\r
105\r
106typedef struct {\r
107 EFI_DEVICE_PATH_PROTOCOL Header;\r
108 EFI_GUID Guid;\r
109 UINT8 VendorDefinedData[1];\r
110} VENDOR_DEVICE_PATH_WITH_DATA;\r
111\r
112typedef struct {\r
113 EFI_DEVICE_PATH_PROTOCOL Header;\r
114 UINT16 NetworkProtocol;\r
115 UINT16 LoginOption;\r
116 UINT64 Lun;\r
117 UINT16 TargetPortalGroupTag;\r
118 CHAR16 TargetName[1];\r
119} ISCSI_DEVICE_PATH_WITH_NAME;\r
120\r
121typedef enum _FILE_EXPLORER_DISPLAY_CONTEXT {\r
122 FileExplorerDisplayFileSystem,\r
123 FileExplorerDisplayDirectory,\r
124 FileExplorerDisplayUnknown\r
125} FILE_EXPLORER_DISPLAY_CONTEXT;\r
126\r
127typedef enum _FILE_EXPLORER_STATE {\r
128 FileExplorerStateInActive = 0,\r
129 FileExplorerStateEnrollPkFile,\r
130 FileExplorerStateEnrollKekFile,\r
131 FileExplorerStateEnrollSignatureFileToDb,\r
132 FileExplorerStateEnrollSignatureFileToDbx,\r
20333c6d 133 FileExplorerStateEnrollSignatureFileToDbt,\r
ecc722ad 134 FileExplorerStateUnknown\r
135} FILE_EXPLORER_STATE;\r
136\r
137typedef struct {\r
138 CHAR16 *Str;\r
139 UINTN Len;\r
140 UINTN Maxlen;\r
141} POOL_PRINT;\r
142\r
143typedef\r
144VOID\r
145(*DEV_PATH_FUNCTION) (\r
146 IN OUT POOL_PRINT *Str,\r
147 IN VOID *DevPath\r
148 );\r
149\r
150typedef struct {\r
151 UINT8 Type;\r
152 UINT8 SubType;\r
153 DEV_PATH_FUNCTION Function;\r
154} DEVICE_PATH_STRING_TABLE;\r
155\r
156typedef struct {\r
157 UINTN Signature;\r
158 LIST_ENTRY Head;\r
159 UINTN MenuNumber;\r
160} SECUREBOOT_MENU_OPTION;\r
161\r
162extern SECUREBOOT_MENU_OPTION FsOptionMenu;\r
163extern SECUREBOOT_MENU_OPTION DirectoryMenu;\r
164\r
165typedef struct {\r
166 UINTN Signature;\r
167 LIST_ENTRY Link;\r
168 UINTN OptionNumber;\r
169 UINT16 *DisplayString;\r
170 UINT16 *HelpString;\r
171 EFI_STRING_ID DisplayStringToken;\r
172 EFI_STRING_ID HelpStringToken;\r
173 VOID *FileContext;\r
174} SECUREBOOT_MENU_ENTRY;\r
175\r
176typedef struct {\r
177 EFI_HANDLE Handle;\r
178 EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
179 EFI_FILE_HANDLE FHandle;\r
180 UINT16 *FileName;\r
181 EFI_FILE_SYSTEM_VOLUME_LABEL *Info;\r
182\r
183 BOOLEAN IsRoot;\r
184 BOOLEAN IsDir;\r
185 BOOLEAN IsRemovableMedia;\r
186 BOOLEAN IsLoadFile;\r
187 BOOLEAN IsBootLegacy;\r
188} SECUREBOOT_FILE_CONTEXT;\r
189\r
190\r
191//\r
192// We define another format of 5th directory entry: security directory\r
193//\r
194typedef struct {\r
195 UINT32 Offset; // Offset of certificate\r
196 UINT32 SizeOfCert; // size of certificate appended\r
197} EFI_IMAGE_SECURITY_DATA_DIRECTORY;\r
198\r
199typedef enum{\r
200 ImageType_IA32,\r
201 ImageType_X64\r
202} IMAGE_TYPE;\r
beda2356 203\r
204///\r
205/// HII specific Vendor Device Path definition.\r
206///\r
207typedef struct {\r
208 VENDOR_DEVICE_PATH VendorDevicePath;\r
209 EFI_DEVICE_PATH_PROTOCOL End;\r
210} HII_VENDOR_DEVICE_PATH;\r
211\r
212typedef struct {\r
213 UINTN Signature;\r
214\r
215 EFI_HII_CONFIG_ACCESS_PROTOCOL ConfigAccess;\r
216 EFI_HII_HANDLE HiiHandle;\r
217 EFI_HANDLE DriverHandle;\r
218\r
ecc722ad 219 FILE_EXPLORER_STATE FeCurrentState;\r
220 FILE_EXPLORER_DISPLAY_CONTEXT FeDisplayContext;\r
221\r
222 SECUREBOOT_MENU_ENTRY *MenuEntry;\r
223 SECUREBOOT_FILE_CONTEXT *FileContext;\r
224\r
225 EFI_GUID *SignatureGUID;\r
beda2356 226} SECUREBOOT_CONFIG_PRIVATE_DATA;\r
227\r
228extern SECUREBOOT_CONFIG_PRIVATE_DATA mSecureBootConfigPrivateDateTemplate;\r
229\r
230#define SECUREBOOT_CONFIG_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('S', 'E', 'C', 'B')\r
bc0c99b3 231#define SECUREBOOT_CONFIG_PRIVATE_FROM_THIS(a) CR (a, SECUREBOOT_CONFIG_PRIVATE_DATA, ConfigAccess, SECUREBOOT_CONFIG_PRIVATE_DATA_SIGNATURE)\r
232\r
ecc722ad 233//\r
234// Cryptograhpic Key Information\r
235//\r
1413b8e9 236#pragma pack(1)\r
ecc722ad 237typedef struct _CPL_KEY_INFO {\r
238 UINT32 KeyLengthInBits; // Key Length In Bits\r
239 UINT32 BlockSize; // Operation Block Size in Bytes\r
240 UINT32 CipherBlockSize; // Output Cipher Block Size in Bytes\r
241 UINT32 KeyType; // Key Type\r
242 UINT32 CipherMode; // Cipher Mode for Symmetric Algorithm\r
243 UINT32 Flags; // Additional Key Property Flags\r
244} CPL_KEY_INFO;\r
1413b8e9 245#pragma pack()\r
ecc722ad 246\r
247\r
248/**\r
249 Retrieves the size, in bytes, of the context buffer required for hash operations.\r
250\r
251 @return The size, in bytes, of the context buffer required for hash operations.\r
252\r
253**/\r
254typedef\r
255EFI_STATUS\r
256(EFIAPI *HASH_GET_CONTEXT_SIZE)(\r
257 VOID\r
258 );\r
259\r
260/**\r
261 Initializes user-supplied memory pointed by HashContext as hash context for\r
262 subsequent use.\r
263\r
264 If HashContext is NULL, then ASSERT().\r
265\r
266 @param[in, out] HashContext Pointer to Context being initialized.\r
267\r
268 @retval TRUE HASH context initialization succeeded.\r
269 @retval FALSE HASH context initialization failed.\r
270\r
271**/\r
272typedef\r
273BOOLEAN\r
274(EFIAPI *HASH_INIT)(\r
275 IN OUT VOID *HashContext\r
276 );\r
277\r
278\r
279/**\r
280 Performs digest on a data buffer of the specified length. This function can\r
281 be called multiple times to compute the digest of long or discontinuous data streams.\r
282\r
283 If HashContext is NULL, then ASSERT().\r
284\r
285 @param[in, out] HashContext Pointer to the MD5 context.\r
286 @param[in] Data Pointer to the buffer containing the data to be hashed.\r
287 @param[in] DataLength Length of Data buffer in bytes.\r
288\r
289 @retval TRUE HASH data digest succeeded.\r
290 @retval FALSE Invalid HASH context. After HashFinal function has been called, the\r
291 HASH context cannot be reused.\r
292\r
293**/\r
294typedef\r
295BOOLEAN\r
296(EFIAPI *HASH_UPDATE)(\r
297 IN OUT VOID *HashContext,\r
298 IN CONST VOID *Data,\r
299 IN UINTN DataLength\r
300 );\r
301\r
302/**\r
303 Completes hash computation and retrieves the digest value into the specified\r
304 memory. After this function has been called, the context cannot be used again.\r
305\r
306 If HashContext is NULL, then ASSERT().\r
307 If HashValue is NULL, then ASSERT().\r
308\r
309 @param[in, out] HashContext Pointer to the MD5 context\r
310 @param[out] HashValue Pointer to a buffer that receives the HASH digest\r
311 value (16 bytes).\r
312\r
313 @retval TRUE HASH digest computation succeeded.\r
314 @retval FALSE HASH digest computation failed.\r
315\r
316**/\r
317typedef\r
318BOOLEAN\r
319(EFIAPI *HASH_FINAL)(\r
320 IN OUT VOID *HashContext,\r
321 OUT UINT8 *HashValue\r
322 );\r
323\r
324//\r
325// Hash Algorithm Table\r
326//\r
327typedef struct {\r
328 CHAR16 *Name; ///< Name for Hash Algorithm\r
329 UINTN DigestLength; ///< Digest Length\r
20333c6d 330 UINT8 *OidValue; ///< Hash Algorithm OID ASN.1 Value\r
ecc722ad 331 UINTN OidLength; ///< Length of Hash OID Value\r
332 HASH_GET_CONTEXT_SIZE GetContextSize; ///< Pointer to Hash GetContentSize function\r
333 HASH_INIT HashInit; ///< Pointer to Hash Init function\r
334 HASH_UPDATE HashUpdate; ///< Pointer to Hash Update function\r
335 HASH_FINAL HashFinal; ///< Pointer to Hash Final function\r
336} HASH_TABLE;\r
337\r
338typedef struct {\r
339 WIN_CERTIFICATE Hdr;\r
340 UINT8 CertData[1];\r
341} WIN_CERTIFICATE_EFI_PKCS;\r
342\r
beda2356 343\r
344/**\r
345 This function publish the SecureBoot configuration Form.\r
346\r
347 @param[in, out] PrivateData Points to SecureBoot configuration private data.\r
348\r
ecc722ad 349 @retval EFI_SUCCESS HII Form is installed successfully.\r
beda2356 350 @retval EFI_OUT_OF_RESOURCES Not enough resource for HII Form installation.\r
351 @retval Others Other errors as indicated.\r
352\r
353**/\r
354EFI_STATUS\r
355InstallSecureBootConfigForm (\r
356 IN OUT SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData\r
357 );\r
358\r
ecc722ad 359\r
beda2356 360/**\r
361 This function removes SecureBoot configuration Form.\r
362\r
363 @param[in, out] PrivateData Points to SecureBoot configuration private data.\r
364\r
365**/\r
beda2356 366VOID\r
367UninstallSecureBootConfigForm (\r
368 IN OUT SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData\r
369 );\r
370\r
ecc722ad 371\r
beda2356 372/**\r
373 This function allows a caller to extract the current configuration for one\r
374 or more named elements from the target driver.\r
375\r
376 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
377 @param[in] Request A null-terminated Unicode string in\r
378 <ConfigRequest> format.\r
379 @param[out] Progress On return, points to a character in the Request\r
380 string. Points to the string's null terminator if\r
381 request was successful. Points to the most recent\r
382 '&' before the first failing name/value pair (or\r
383 the beginning of the string if the failure is in\r
384 the first name/value pair) if the request was not\r
385 successful.\r
386 @param[out] Results A null-terminated Unicode string in\r
387 <ConfigAltResp> format which has all values filled\r
388 in for the names in the Request string. String to\r
389 be allocated by the called function.\r
390\r
391 @retval EFI_SUCCESS The Results is filled with the requested values.\r
392 @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.\r
393 @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.\r
394 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this\r
395 driver.\r
396\r
397**/\r
398EFI_STATUS\r
399EFIAPI\r
400SecureBootExtractConfig (\r
401 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
402 IN CONST EFI_STRING Request,\r
403 OUT EFI_STRING *Progress,\r
404 OUT EFI_STRING *Results\r
405 );\r
406\r
ecc722ad 407\r
beda2356 408/**\r
409 This function processes the results of changes in configuration.\r
410\r
411 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
412 @param[in] Configuration A null-terminated Unicode string in <ConfigResp>\r
413 format.\r
414 @param[out] Progress A pointer to a string filled in with the offset of\r
415 the most recent '&' before the first failing\r
416 name/value pair (or the beginning of the string if\r
417 the failure is in the first name/value pair) or\r
418 the terminating NULL if all was successful.\r
419\r
420 @retval EFI_SUCCESS The Results is processed successfully.\r
421 @retval EFI_INVALID_PARAMETER Configuration is NULL.\r
422 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this\r
423 driver.\r
424\r
425**/\r
426EFI_STATUS\r
427EFIAPI\r
428SecureBootRouteConfig (\r
429 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
430 IN CONST EFI_STRING Configuration,\r
431 OUT EFI_STRING *Progress\r
432 );\r
433\r
ecc722ad 434\r
beda2356 435/**\r
436 This function processes the results of changes in configuration.\r
437\r
438 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
439 @param[in] Action Specifies the type of action taken by the browser.\r
440 @param[in] QuestionId A unique value which is sent to the original\r
441 exporting driver so that it can identify the type\r
442 of data to expect.\r
443 @param[in] Type The type of value for the question.\r
444 @param[in] Value A pointer to the data being sent to the original\r
445 exporting driver.\r
446 @param[out] ActionRequest On return, points to the action requested by the\r
447 callback function.\r
448\r
449 @retval EFI_SUCCESS The callback successfully handled the action.\r
450 @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the\r
451 variable and its data.\r
452 @retval EFI_DEVICE_ERROR The variable could not be saved.\r
453 @retval EFI_UNSUPPORTED The specified Action is not supported by the\r
454 callback.\r
455\r
456**/\r
457EFI_STATUS\r
458EFIAPI\r
459SecureBootCallback (\r
460 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
461 IN EFI_BROWSER_ACTION Action,\r
462 IN EFI_QUESTION_ID QuestionId,\r
463 IN UINT8 Type,\r
464 IN EFI_IFR_TYPE_VALUE *Value,\r
465 OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest\r
466 );\r
467\r
ecc722ad 468\r
469/**\r
470 This function converts an input device structure to a Unicode string.\r
471\r
472 @param[in] DevPath A pointer to the device path structure.\r
473\r
474 @return A new allocated Unicode string that represents the device path.\r
475\r
476**/\r
477CHAR16 *\r
478EFIAPI\r
479DevicePathToStr (\r
480 IN EFI_DEVICE_PATH_PROTOCOL *DevPath\r
481 );\r
482\r
483\r
484/**\r
20333c6d 485 Clean up the dynamic opcode at label and form specified by both LabelId.\r
ecc722ad 486\r
487 @param[in] LabelId It is both the Form ID and Label ID for opcode deletion.\r
488 @param[in] PrivateData Module private data.\r
489\r
490**/\r
491VOID\r
492CleanUpPage (\r
493 IN UINT16 LabelId,\r
494 IN SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData\r
495 );\r
496\r
497\r
498/**\r
499 Update the file explorer page with the refreshed file system.\r
500\r
501 @param[in] PrivateData Module private data.\r
502 @param[in] KeyValue Key value to identify the type of data to expect.\r
503\r
504 @retval TRUE Inform the caller to create a callback packet to exit file explorer.\r
505 @retval FALSE Indicate that there is no need to exit file explorer.\r
506\r
507**/\r
508BOOLEAN\r
509UpdateFileExplorer (\r
510 IN SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData,\r
511 IN UINT16 KeyValue\r
512 );\r
513\r
514\r
515/**\r
516 Free resources allocated in Allocate Rountine.\r
517\r
518 @param[in, out] MenuOption Menu to be freed\r
20333c6d 519\r
ecc722ad 520**/\r
521VOID\r
522FreeMenu (\r
523 IN OUT SECUREBOOT_MENU_OPTION *MenuOption\r
524 );\r
525\r
526\r
527/**\r
20333c6d 528 Read file content into BufferPtr, the size of the allocate buffer\r
ecc722ad 529 is *FileSize plus AddtionAllocateSize.\r
530\r
531 @param[in] FileHandle The file to be read.\r
532 @param[in, out] BufferPtr Pointers to the pointer of allocated buffer.\r
533 @param[out] FileSize Size of input file\r
20333c6d 534 @param[in] AddtionAllocateSize Addtion size the buffer need to be allocated.\r
ecc722ad 535 In case the buffer need to contain others besides the file content.\r
20333c6d 536\r
ecc722ad 537 @retval EFI_SUCCESS The file was read into the buffer.\r
538 @retval EFI_INVALID_PARAMETER A parameter was invalid.\r
539 @retval EFI_OUT_OF_RESOURCES A memory allocation failed.\r
540 @retval others Unexpected error.\r
541\r
542**/\r
543EFI_STATUS\r
544ReadFileContent (\r
545 IN EFI_FILE_HANDLE FileHandle,\r
546 IN OUT VOID **BufferPtr,\r
547 OUT UINTN *FileSize,\r
548 IN UINTN AddtionAllocateSize\r
549 );\r
550\r
551\r
552/**\r
553 Close an open file handle.\r
554\r
555 @param[in] FileHandle The file handle to close.\r
20333c6d 556\r
ecc722ad 557**/\r
558VOID\r
559CloseFile (\r
560 IN EFI_FILE_HANDLE FileHandle\r
561 );\r
562\r
563\r
564/**\r
565 Converts a nonnegative integer to an octet string of a specified length.\r
566\r
567 @param[in] Integer Pointer to the nonnegative integer to be converted\r
568 @param[in] IntSizeInWords Length of integer buffer in words\r
20333c6d 569 @param[out] OctetString Converted octet string of the specified length\r
ecc722ad 570 @param[in] OSSizeInBytes Intended length of resulting octet string in bytes\r
571\r
572Returns:\r
573\r
574 @retval EFI_SUCCESS Data conversion successfully\r
575 @retval EFI_BUFFER_TOOL_SMALL Buffer is too small for output string\r
576\r
577**/\r
578EFI_STATUS\r
579EFIAPI\r
580Int2OctStr (\r
581 IN CONST UINTN *Integer,\r
582 IN UINTN IntSizeInWords,\r
583 OUT UINT8 *OctetString,\r
584 IN UINTN OSSizeInBytes\r
585 );\r
586\r
587\r
588/**\r
589 Convert a String to Guid Value.\r
590\r
591 @param[in] Str Specifies the String to be converted.\r
592 @param[in] StrLen Number of Unicode Characters of String (exclusive \0)\r
593 @param[out] Guid Return the result Guid value.\r
594\r
595 @retval EFI_SUCCESS The operation is finished successfully.\r
596 @retval EFI_NOT_FOUND Invalid string.\r
597\r
598**/\r
599EFI_STATUS\r
600StringToGuid (\r
20333c6d
QL		 601 IN CHAR16 *Str,\r
602 IN UINTN StrLen,\r
ecc722ad 603 OUT EFI_GUID *Guid\r
604 );\r
605\r
606\r
607/**\r
608 Worker function that prints an EFI_GUID into specified Buffer.\r
609\r
610 @param[in] Guid Pointer to GUID to print.\r
611 @param[in] Buffer Buffer to print Guid into.\r
612 @param[in] BufferSize Size of Buffer.\r
20333c6d 613\r
ecc722ad 614 @retval Number of characters printed.\r
615\r
616**/\r
617UINTN\r
618GuidToString (\r
619 IN EFI_GUID *Guid,\r
620 IN CHAR16 *Buffer,\r
621 IN UINTN BufferSize\r
622 );\r
623\r
2e728930 624#endif\r
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