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[mirror_edk2.git] / MdeModulePkg / Universal / Disk / RamDiskDxe / RamDiskImpl.h
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20752cb8
HW		 1/** @file\r
2 The header file of RamDiskDxe driver.\r
3\r
38c9fbdc 4 Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>\r
9d510e61 5 SPDX-License-Identifier: BSD-2-Clause-Patent\r
20752cb8
HW		 6\r
7**/\r
8\r
9#ifndef _RAM_DISK_IMPL_H_\r
10#define _RAM_DISK_IMPL_H_\r
11\r
12#include <Uefi.h>\r
13#include <Library/BaseLib.h>\r
14#include <Library/BaseMemoryLib.h>\r
15#include <Library/DebugLib.h>\r
16#include <Library/UefiLib.h>\r
17#include <Library/UefiDriverEntryPoint.h>\r
18#include <Library/UefiBootServicesTableLib.h>\r
19#include <Library/UefiHiiServicesLib.h>\r
20#include <Library/MemoryAllocationLib.h>\r
21#include <Library/HiiLib.h>\r
22#include <Library/FileExplorerLib.h>\r
23#include <Library/DevicePathLib.h>\r
24#include <Library/PrintLib.h>\r
07a3fecd
HW		 25#include <Library/PcdLib.h>\r
26#include <Library/DxeServicesLib.h>\r
20752cb8
HW		 27#include <Protocol/RamDisk.h>\r
28#include <Protocol/BlockIo.h>\r
216fefa3 29#include <Protocol/BlockIo2.h>\r
20752cb8
HW		 30#include <Protocol/HiiConfigAccess.h>\r
31#include <Protocol/SimpleFileSystem.h>\r
07a3fecd
HW		 32#include <Protocol/AcpiTable.h>\r
33#include <Protocol/AcpiSystemDescriptionTable.h>\r
20752cb8
HW		 34#include <Guid/MdeModuleHii.h>\r
35#include <Guid/RamDiskHii.h>\r
36#include <Guid/FileInfo.h>\r
07a3fecd 37#include <IndustryStandard/Acpi61.h>\r
20752cb8
HW		 38\r
39#include "RamDiskNVData.h"\r
40\r
41///\r
42/// RAM disk general definitions and declarations\r
43///\r
44\r
45//\r
38c9fbdc 46// Default block size for RAM disk\r
20752cb8 47//\r
38c9fbdc 48#define RAM_DISK_DEFAULT_BLOCK_SIZE 512\r
20752cb8
HW		 49\r
50//\r
0a18956d 51// Iterate through the double linked list. NOT delete safe\r
20752cb8
HW		 52//\r
53#define EFI_LIST_FOR_EACH(Entry, ListHead) \\r
54 for(Entry = (ListHead)->ForwardLink; Entry != (ListHead); Entry = Entry->ForwardLink)\r
55\r
56//\r
0a18956d 57// Iterate through the double linked list. This is delete-safe.\r
20752cb8
HW		 58// Do not touch NextEntry\r
59//\r
60#define EFI_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \\r
61 for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink;\\r
62 Entry != (ListHead); Entry = NextEntry, NextEntry = Entry->ForwardLink)\r
63\r
64//\r
65// RamDiskDxe driver maintains a list of registered RAM disks.\r
66//\r
67extern LIST_ENTRY RegisteredRamDisks;\r
20752cb8 68\r
07a3fecd
HW		 69//\r
70// Pointers to the EFI_ACPI_TABLE_PROTOCOL and EFI_ACPI_SDT_PROTOCOL.\r
71//\r
72extern EFI_ACPI_TABLE_PROTOCOL *mAcpiTableProtocol;\r
73extern EFI_ACPI_SDT_PROTOCOL *mAcpiSdtProtocol;\r
74\r
20752cb8
HW		 75//\r
76// RAM Disk create method.\r
77//\r
78typedef enum _RAM_DISK_CREATE_METHOD {\r
79 RamDiskCreateOthers = 0,\r
80 RamDiskCreateHii\r
81} RAM_DISK_CREATE_METHOD;\r
82\r
83//\r
84// RamDiskDxe driver maintains a list of registered RAM disks.\r
85// The struct contains the list entry and the information of each RAM\r
86// disk\r
87//\r
88typedef struct {\r
89 UINTN Signature;\r
90\r
91 EFI_HANDLE Handle;\r
92\r
93 EFI_BLOCK_IO_PROTOCOL BlockIo;\r
216fefa3 94 EFI_BLOCK_IO2_PROTOCOL BlockIo2;\r
20752cb8
HW		 95 EFI_BLOCK_IO_MEDIA Media;\r
96 EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
97\r
98 UINT64 StartingAddr;\r
99 UINT64 Size;\r
100 EFI_GUID TypeGuid;\r
101 UINT16 InstanceNumber;\r
102 RAM_DISK_CREATE_METHOD CreateMethod;\r
07a3fecd 103 BOOLEAN InNfit;\r
09abc636
HW		 104 EFI_QUESTION_ID CheckBoxId;\r
105 BOOLEAN CheckBoxChecked;\r
20752cb8
HW		 106\r
107 LIST_ENTRY ThisInstance;\r
108} RAM_DISK_PRIVATE_DATA;\r
109\r
110#define RAM_DISK_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('R', 'D', 'S', 'K')\r
111#define RAM_DISK_PRIVATE_FROM_BLKIO(a) CR (a, RAM_DISK_PRIVATE_DATA, BlockIo, RAM_DISK_PRIVATE_DATA_SIGNATURE)\r
216fefa3 112#define RAM_DISK_PRIVATE_FROM_BLKIO2(a) CR (a, RAM_DISK_PRIVATE_DATA, BlockIo2, RAM_DISK_PRIVATE_DATA_SIGNATURE)\r
20752cb8
HW		 113#define RAM_DISK_PRIVATE_FROM_THIS(a) CR (a, RAM_DISK_PRIVATE_DATA, ThisInstance, RAM_DISK_PRIVATE_DATA_SIGNATURE)\r
114\r
115///\r
116/// RAM disk HII-related definitions and declarations\r
117///\r
118\r
119//\r
120// Tool generated IFR binary data and String package data\r
121//\r
122extern UINT8 RamDiskHiiBin[];\r
123extern UINT8 RamDiskDxeStrings[];\r
124\r
125typedef struct {\r
126 VENDOR_DEVICE_PATH VendorDevicePath;\r
127 EFI_DEVICE_PATH_PROTOCOL End;\r
128} HII_VENDOR_DEVICE_PATH;\r
129\r
130typedef struct {\r
131 UINTN Signature;\r
132\r
5cf8a917
HW		 133 RAM_DISK_CONFIGURATION ConfigStore;\r
134\r
20752cb8
HW		 135 EFI_HII_CONFIG_ACCESS_PROTOCOL ConfigAccess;\r
136 EFI_HANDLE DriverHandle;\r
137 EFI_HII_HANDLE HiiHandle;\r
138} RAM_DISK_CONFIG_PRIVATE_DATA;\r
139\r
140extern RAM_DISK_CONFIG_PRIVATE_DATA mRamDiskConfigPrivateDataTemplate;\r
141\r
142#define RAM_DISK_CONFIG_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('R', 'C', 'F', 'G')\r
143#define RAM_DISK_CONFIG_PRIVATE_FROM_THIS(a) CR (a, RAM_DISK_CONFIG_PRIVATE_DATA, ConfigAccess, RAM_DISK_CONFIG_PRIVATE_DATA_SIGNATURE)\r
144\r
20752cb8
HW		 145/**\r
146 Register a RAM disk with specified address, size and type.\r
147\r
148 @param[in] RamDiskBase The base address of registered RAM disk.\r
149 @param[in] RamDiskSize The size of registered RAM disk.\r
150 @param[in] RamDiskType The type of registered RAM disk. The GUID can be\r
151 any of the values defined in section 9.3.6.9, or a\r
152 vendor defined GUID.\r
153 @param[in] ParentDevicePath\r
154 Pointer to the parent device path. If there is no\r
155 parent device path then ParentDevicePath is NULL.\r
156 @param[out] DevicePath On return, points to a pointer to the device path\r
157 of the RAM disk device.\r
158 If ParentDevicePath is not NULL, the returned\r
159 DevicePath is created by appending a RAM disk node\r
160 to the parent device path. If ParentDevicePath is\r
161 NULL, the returned DevicePath is a RAM disk device\r
162 path without appending. This function is\r
163 responsible for allocating the buffer DevicePath\r
164 with the boot service AllocatePool().\r
165\r
166 @retval EFI_SUCCESS The RAM disk is registered successfully.\r
167 @retval EFI_INVALID_PARAMETER DevicePath or RamDiskType is NULL.\r
168 RamDiskSize is 0.\r
169 @retval EFI_ALREADY_STARTED A Device Path Protocol instance to be created\r
170 is already present in the handle database.\r
171 @retval EFI_OUT_OF_RESOURCES The RAM disk register operation fails due to\r
172 resource limitation.\r
173\r
174**/\r
175EFI_STATUS\r
176EFIAPI\r
177RamDiskRegister (\r
178 IN UINT64 RamDiskBase,\r
179 IN UINT64 RamDiskSize,\r
180 IN EFI_GUID *RamDiskType,\r
181 IN EFI_DEVICE_PATH *ParentDevicePath OPTIONAL,\r
182 OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r
183 );\r
184\r
185/**\r
186 Unregister a RAM disk specified by DevicePath.\r
187\r
188 @param[in] DevicePath A pointer to the device path that describes a RAM\r
189 Disk device.\r
190\r
191 @retval EFI_SUCCESS The RAM disk is unregistered successfully.\r
192 @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
193 @retval EFI_UNSUPPORTED The device specified by DevicePath is not a\r
194 valid ramdisk device path and not supported\r
195 by the driver.\r
196 @retval EFI_NOT_FOUND The RAM disk pointed by DevicePath doesn't\r
197 exist.\r
198\r
199**/\r
200EFI_STATUS\r
201EFIAPI\r
202RamDiskUnregister (\r
203 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r
204 );\r
205\r
206/**\r
207 Initialize the BlockIO protocol of a RAM disk device.\r
208\r
209 @param[in] PrivateData Points to RAM disk private data.\r
210\r
211**/\r
212VOID\r
213RamDiskInitBlockIo (\r
214 IN RAM_DISK_PRIVATE_DATA *PrivateData\r
215 );\r
216\r
217/**\r
218 Reset the Block Device.\r
219\r
220 @param[in] This Indicates a pointer to the calling context.\r
221 @param[in] ExtendedVerification\r
222 Driver may perform diagnostics on reset.\r
223\r
224 @retval EFI_SUCCESS The device was reset.\r
225 @retval EFI_DEVICE_ERROR The device is not functioning properly and\r
226 could not be reset.\r
227\r
228**/\r
229EFI_STATUS\r
230EFIAPI\r
231RamDiskBlkIoReset (\r
232 IN EFI_BLOCK_IO_PROTOCOL *This,\r
233 IN BOOLEAN ExtendedVerification\r
234 );\r
235\r
236/**\r
237 Read BufferSize bytes from Lba into Buffer.\r
238\r
239 @param[in] This Indicates a pointer to the calling context.\r
240 @param[in] MediaId Id of the media, changes every time the media is\r
241 replaced.\r
242 @param[in] Lba The starting Logical Block Address to read from.\r
243 @param[in] BufferSize Size of Buffer, must be a multiple of device block\r
244 size.\r
245 @param[out] Buffer A pointer to the destination buffer for the data.\r
246 The caller is responsible for either having\r
247 implicit or explicit ownership of the buffer.\r
248\r
249 @retval EFI_SUCCESS The data was read correctly from the device.\r
250 @retval EFI_DEVICE_ERROR The device reported an error while performing\r
251 the read.\r
252 @retval EFI_NO_MEDIA There is no media in the device.\r
253 @retval EFI_MEDIA_CHANGED The MediaId does not matched the current\r
254 device.\r
255 @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block\r
256 size of the device.\r
257 @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not\r
258 valid, or the buffer is not on proper alignment.\r
259\r
260**/\r
261EFI_STATUS\r
262EFIAPI\r
263RamDiskBlkIoReadBlocks (\r
264 IN EFI_BLOCK_IO_PROTOCOL *This,\r
265 IN UINT32 MediaId,\r
266 IN EFI_LBA Lba,\r
267 IN UINTN BufferSize,\r
268 OUT VOID *Buffer\r
269 );\r
270\r
271/**\r
272 Write BufferSize bytes from Lba into Buffer.\r
273\r
274 @param[in] This Indicates a pointer to the calling context.\r
275 @param[in] MediaId The media ID that the write request is for.\r
276 @param[in] Lba The starting logical block address to be written.\r
277 The caller is responsible for writing to only\r
278 legitimate locations.\r
279 @param[in] BufferSize Size of Buffer, must be a multiple of device block\r
280 size.\r
281 @param[in] Buffer A pointer to the source buffer for the data.\r
282\r
283 @retval EFI_SUCCESS The data was written correctly to the device.\r
284 @retval EFI_WRITE_PROTECTED The device can not be written to.\r
285 @retval EFI_DEVICE_ERROR The device reported an error while performing\r
286 the write.\r
287 @retval EFI_NO_MEDIA There is no media in the device.\r
288 @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current\r
289 device.\r
290 @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block\r
291 size of the device.\r
292 @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not\r
293 valid, or the buffer is not on proper alignment.\r
294\r
295**/\r
296EFI_STATUS\r
297EFIAPI\r
298RamDiskBlkIoWriteBlocks (\r
299 IN EFI_BLOCK_IO_PROTOCOL *This,\r
300 IN UINT32 MediaId,\r
301 IN EFI_LBA Lba,\r
302 IN UINTN BufferSize,\r
303 IN VOID *Buffer\r
304 );\r
305\r
306/**\r
307 Flush the Block Device.\r
308\r
309 @param[in] This Indicates a pointer to the calling context.\r
310\r
311 @retval EFI_SUCCESS All outstanding data was written to the device.\r
312 @retval EFI_DEVICE_ERROR The device reported an error while writting\r
313 back the data\r
314 @retval EFI_NO_MEDIA There is no media in the device.\r
315\r
316**/\r
317EFI_STATUS\r
318EFIAPI\r
319RamDiskBlkIoFlushBlocks (\r
320 IN EFI_BLOCK_IO_PROTOCOL *This\r
321 );\r
322\r
216fefa3
HW		 323/**\r
324 Resets the block device hardware.\r
325\r
326 @param[in] This The pointer of EFI_BLOCK_IO2_PROTOCOL.\r
327 @param[in] ExtendedVerification The flag about if extend verificate.\r
328\r
329 @retval EFI_SUCCESS The device was reset.\r
330 @retval EFI_DEVICE_ERROR The block device is not functioning correctly\r
331 and could not be reset.\r
332\r
333**/\r
334EFI_STATUS\r
335EFIAPI\r
336RamDiskBlkIo2Reset (\r
337 IN EFI_BLOCK_IO2_PROTOCOL *This,\r
338 IN BOOLEAN ExtendedVerification\r
339 );\r
340\r
341/**\r
342 Reads the requested number of blocks from the device.\r
343\r
344 @param[in] This Indicates a pointer to the calling context.\r
345 @param[in] MediaId The media ID that the read request is for.\r
346 @param[in] Lba The starting logical block address to read\r
347 from on the device.\r
348 @param[in, out] Token A pointer to the token associated with the\r
349 transaction.\r
350 @param[in] BufferSize The size of the Buffer in bytes. This must be\r
351 a multiple of the intrinsic block size of the\r
352 device.\r
353 @param[out] Buffer A pointer to the destination buffer for the\r
354 data. The caller is responsible for either\r
355 having implicit or explicit ownership of the\r
356 buffer.\r
357\r
358 @retval EFI_SUCCESS The read request was queued if Token->Event\r
359 is not NULL. The data was read correctly from\r
360 the device if the Token->Event is NULL.\r
361 @retval EFI_DEVICE_ERROR The device reported an error while attempting\r
362 to perform the read operation.\r
363 @retval EFI_NO_MEDIA There is no media in the device.\r
364 @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
365 @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of\r
366 the intrinsic block size of the device.\r
367 @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not\r
368 valid, or the buffer is not on proper\r
369 alignment.\r
370 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a\r
371 lack of resources.\r
372\r
373**/\r
374EFI_STATUS\r
375EFIAPI\r
376RamDiskBlkIo2ReadBlocksEx (\r
377 IN EFI_BLOCK_IO2_PROTOCOL *This,\r
378 IN UINT32 MediaId,\r
379 IN EFI_LBA Lba,\r
380 IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r
381 IN UINTN BufferSize,\r
382 OUT VOID *Buffer\r
383 );\r
384\r
385/**\r
386 Writes a specified number of blocks to the device.\r
387\r
388 @param[in] This Indicates a pointer to the calling context.\r
389 @param[in] MediaId The media ID that the write request is for.\r
390 @param[in] Lba The starting logical block address to be\r
391 written. The caller is responsible for\r
392 writing to only legitimate locations.\r
393 @param[in, out] Token A pointer to the token associated with the\r
394 transaction.\r
395 @param[in] BufferSize The size in bytes of Buffer. This must be a\r
396 multiple of the intrinsic block size of the\r
397 device.\r
398 @param[in] Buffer A pointer to the source buffer for the data.\r
399\r
400 @retval EFI_SUCCESS The write request was queued if Event is not\r
401 NULL. The data was written correctly to the\r
402 device if the Event is NULL.\r
403 @retval EFI_WRITE_PROTECTED The device cannot be written to.\r
404 @retval EFI_NO_MEDIA There is no media in the device.\r
405 @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
406 @retval EFI_DEVICE_ERROR The device reported an error while attempting\r
407 to perform the write operation.\r
408 @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of\r
409 the intrinsic block size of the device.\r
410 @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not\r
411 valid, or the buffer is not on proper\r
412 alignment.\r
413 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a\r
414 lack of resources.\r
415\r
416**/\r
417EFI_STATUS\r
418EFIAPI\r
419RamDiskBlkIo2WriteBlocksEx (\r
420 IN EFI_BLOCK_IO2_PROTOCOL *This,\r
421 IN UINT32 MediaId,\r
422 IN EFI_LBA Lba,\r
423 IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r
424 IN UINTN BufferSize,\r
425 IN VOID *Buffer\r
426 );\r
427\r
428/**\r
429 Flushes all modified data to a physical block device.\r
430\r
431 @param[in] This Indicates a pointer to the calling context.\r
432 @param[in, out] Token A pointer to the token associated with the\r
433 transaction.\r
434\r
435 @retval EFI_SUCCESS The flush request was queued if Event is not\r
436 NULL. All outstanding data was written\r
437 correctly to the device if the Event is NULL.\r
438 @retval EFI_DEVICE_ERROR The device reported an error while attempting\r
439 to write data.\r
440 @retval EFI_WRITE_PROTECTED The device cannot be written to.\r
441 @retval EFI_NO_MEDIA There is no media in the device.\r
442 @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
443 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a\r
444 lack of resources.\r
445\r
446**/\r
447EFI_STATUS\r
448EFIAPI\r
449RamDiskBlkIo2FlushBlocksEx (\r
450 IN EFI_BLOCK_IO2_PROTOCOL *This,\r
451 IN OUT EFI_BLOCK_IO2_TOKEN *Token\r
452 );\r
453\r
20752cb8
HW		 454/**\r
455 This function publish the RAM disk configuration Form.\r
456\r
457 @param[in, out] ConfigPrivateData\r
458 Points to RAM disk configuration private data.\r
459\r
460 @retval EFI_SUCCESS HII Form is installed successfully.\r
461 @retval EFI_OUT_OF_RESOURCES Not enough resource for HII Form installation.\r
462 @retval Others Other errors as indicated.\r
463\r
464**/\r
465EFI_STATUS\r
466InstallRamDiskConfigForm (\r
467 IN OUT RAM_DISK_CONFIG_PRIVATE_DATA *ConfigPrivateData\r
468 );\r
469\r
470/**\r
471 This function removes RAM disk configuration Form.\r
472\r
473 @param[in, out] ConfigPrivateData\r
474 Points to RAM disk configuration private data.\r
475\r
476**/\r
477VOID\r
478UninstallRamDiskConfigForm (\r
479 IN OUT RAM_DISK_CONFIG_PRIVATE_DATA *ConfigPrivateData\r
480 );\r
481\r
482/**\r
483 Unregister all registered RAM disks.\r
484\r
485**/\r
486VOID\r
487UnregisterAllRamDisks (\r
488 VOID\r
489 );\r
490\r
491/**\r
492 This function allows a caller to extract the current configuration for one\r
493 or more named elements from the target driver.\r
494\r
495 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
496 @param[in] Request A null-terminated Unicode string in\r
497 <ConfigRequest> format.\r
498 @param[out] Progress On return, points to a character in the Request\r
499 string. Points to the string's null terminator if\r
500 request was successful. Points to the most recent\r
501 '&' before the first failing name/value pair (or\r
502 the beginning of the string if the failure is in\r
503 the first name/value pair) if the request was not\r
504 successful.\r
505 @param[out] Results A null-terminated Unicode string in\r
506 <ConfigAltResp> format which has all values filled\r
507 in for the names in the Request string. String to\r
508 be allocated by the called function.\r
509\r
510 @retval EFI_SUCCESS The Results is filled with the requested\r
511 values.\r
512 @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.\r
513 @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.\r
514 @retval EFI_NOT_FOUND Routing data doesn't match any storage in\r
515 this driver.\r
516\r
517**/\r
518EFI_STATUS\r
519EFIAPI\r
520RamDiskExtractConfig (\r
521 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
522 IN CONST EFI_STRING Request,\r
523 OUT EFI_STRING *Progress,\r
524 OUT EFI_STRING *Results\r
525 );\r
526\r
527/**\r
528 This function processes the results of changes in configuration.\r
529\r
530 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
531 @param[in] Configuration A null-terminated Unicode string in <ConfigResp>\r
532 format.\r
533 @param[out] Progress A pointer to a string filled in with the offset of\r
534 the most recent '&' before the first failing\r
535 name/value pair (or the beginning of the string if\r
536 the failure is in the first name/value pair) or\r
537 the terminating NULL if all was successful.\r
538\r
539 @retval EFI_SUCCESS The Results is processed successfully.\r
540 @retval EFI_INVALID_PARAMETER Configuration is NULL.\r
541 @retval EFI_NOT_FOUND Routing data doesn't match any storage in\r
542 this driver.\r
543\r
544**/\r
545EFI_STATUS\r
546EFIAPI\r
547RamDiskRouteConfig (\r
548 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
549 IN CONST EFI_STRING Configuration,\r
550 OUT EFI_STRING *Progress\r
551 );\r
552\r
553/**\r
554 This function processes the results of changes in configuration.\r
555\r
556 @param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.\r
557 @param[in] Action Specifies the type of action taken by the browser.\r
558 @param[in] QuestionId A unique value which is sent to the original\r
559 exporting driver so that it can identify the type\r
560 of data to expect.\r
561 @param[in] Type The type of value for the question.\r
562 @param[in] Value A pointer to the data being sent to the original\r
563 exporting driver.\r
564 @param[out] ActionRequest On return, points to the action requested by the\r
565 callback function.\r
566\r
567 @retval EFI_SUCCESS The callback successfully handled the action.\r
568 @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the\r
569 variable and its data.\r
570 @retval EFI_DEVICE_ERROR The variable could not be saved.\r
571 @retval EFI_UNSUPPORTED The specified Action is not supported by the\r
572 callback.\r
573\r
574**/\r
575EFI_STATUS\r
576EFIAPI\r
577RamDiskCallback (\r
578 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,\r
579 IN EFI_BROWSER_ACTION Action,\r
580 IN EFI_QUESTION_ID QuestionId,\r
581 IN UINT8 Type,\r
582 IN EFI_IFR_TYPE_VALUE *Value,\r
583 OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest\r
584 );\r
585\r
586\r
587/**\r
588 This function gets the file information from an open file descriptor,\r
589 and stores it in a buffer allocated from pool.\r
590\r
591 @param[in] FHand File Handle.\r
592\r
593 @return A pointer to a buffer with file information or NULL is returned.\r
594\r
595**/\r
596EFI_FILE_INFO *\r
597FileInfo (\r
598 IN EFI_FILE_HANDLE FHand\r
599 );\r
600\r
601\r
07a3fecd
HW		 602/**\r
603 Publish the RAM disk NVDIMM Firmware Interface Table (NFIT) to the ACPI\r
604 table.\r
605\r
606 @param[in] PrivateData Points to RAM disk private data.\r
607\r
608 @retval EFI_SUCCESS The RAM disk NFIT has been published.\r
609 @retval others The RAM disk NFIT has not been published.\r
610\r
611**/\r
612EFI_STATUS\r
613RamDiskPublishNfit (\r
614 IN RAM_DISK_PRIVATE_DATA *PrivateData\r
615 );\r
616\r
20752cb8 617#endif\r
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