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1 | /** @file\r | |
2 | MDE DXE Services Library provides functions that simplify the development of DXE Drivers. \r | |
3 | These functions help access data from sections of FFS files or from file path.\r | |
4 | \r | |
5 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved<BR>\r | |
6 | This program and the accompanying materials are licensed and made available under \r | |
7 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
8 | The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php. \r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #ifndef __DXE_SERVICES_LIB_H__\r | |
17 | #define __DXE_SERVICES_LIB_H__\r | |
18 | \r | |
19 | /**\r | |
20 | Searches all the available firmware volumes and returns the first matching FFS section. \r | |
21 | \r | |
22 | This function searches all the firmware volumes for FFS files with an FFS filename specified by NameGuid. \r | |
23 | The order in which the firmware volumes are searched is not deterministic. For each FFS file found, a search \r | |
24 | is made for FFS sections of type SectionType. If the FFS file contains at least SectionInstance instances \r | |
25 | of the FFS section specified by SectionType, then the SectionInstance instance is returned in Buffer. \r | |
26 | Buffer is allocated using AllocatePool(), and the size of the allocated buffer is returned in Size. \r | |
27 | It is the caller's responsibility to use FreePool() to free the allocated buffer. \r | |
28 | See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for details on how sections \r | |
29 | are retrieved from an FFS file based on SectionType and SectionInstance.\r | |
30 | \r | |
31 | If SectionType is EFI_SECTION_TE, and the search with an FFS file fails, \r | |
32 | the search will be retried with a section type of EFI_SECTION_PE32.\r | |
33 | This function must be called with a TPL <= TPL_NOTIFY.\r | |
34 | \r | |
35 | If NameGuid is NULL, then ASSERT().\r | |
36 | If Buffer is NULL, then ASSERT().\r | |
37 | If Size is NULL, then ASSERT().\r | |
38 | \r | |
39 | \r | |
40 | @param NameGuid A pointer to to the FFS filename GUID to search for \r | |
41 | within any of the firmware volumes in the platform. \r | |
42 | @param SectionType Indicates the FFS section type to search for within \r | |
43 | the FFS file specified by NameGuid.\r | |
44 | @param SectionInstance Indicates which section instance within the FFS file \r | |
45 | specified by NameGuid to retrieve.\r | |
46 | @param Buffer On output, a pointer to a callee-allocated buffer \r | |
47 | containing the FFS file section that was found. \r | |
48 | It is the caller's responsibility to free this \r | |
49 | buffer using FreePool().\r | |
50 | @param Size On output, a pointer to the size, in bytes, of Buffer.\r | |
51 | \r | |
52 | @retval EFI_SUCCESS The specified FFS section was returned.\r | |
53 | @retval EFI_NOT_FOUND The specified FFS section could not be found.\r | |
54 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve \r | |
55 | the matching FFS section.\r | |
56 | @retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a \r | |
57 | device error.\r | |
58 | @retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the \r | |
59 | firmware volume that contains the matching FFS \r | |
60 | section does not allow reads.\r | |
61 | **/\r | |
62 | EFI_STATUS\r | |
63 | EFIAPI\r | |
64 | GetSectionFromAnyFv (\r | |
65 | IN CONST EFI_GUID *NameGuid,\r | |
66 | IN EFI_SECTION_TYPE SectionType,\r | |
67 | IN UINTN SectionInstance,\r | |
68 | OUT VOID **Buffer,\r | |
69 | OUT UINTN *Size\r | |
70 | );\r | |
71 | \r | |
72 | /**\r | |
73 | Searches the firmware volume that the currently executing module was loaded from and returns the first matching FFS section. \r | |
74 | \r | |
75 | This function searches the firmware volume that the currently executing module was loaded \r | |
76 | from for an FFS file with an FFS filename specified by NameGuid. If the FFS file is found, a search \r | |
77 | is made for FFS sections of type SectionType. If the FFS file contains at least SectionInstance \r | |
78 | instances of the FFS section specified by SectionType, then the SectionInstance instance is returned in Buffer.\r | |
79 | Buffer is allocated using AllocatePool(), and the size of the allocated buffer is returned in Size. \r | |
80 | It is the caller's responsibility to use FreePool() to free the allocated buffer. \r | |
81 | See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for details on how sections are retrieved from \r | |
82 | an FFS file based on SectionType and SectionInstance.\r | |
83 | \r | |
84 | If the currently executing module was not loaded from a firmware volume, then EFI_NOT_FOUND is returned.\r | |
85 | If SectionType is EFI_SECTION_TE, and the search with an FFS file fails, \r | |
86 | the search will be retried with a section type of EFI_SECTION_PE32.\r | |
87 | \r | |
88 | This function must be called with a TPL <= TPL_NOTIFY.\r | |
89 | If NameGuid is NULL, then ASSERT().\r | |
90 | If Buffer is NULL, then ASSERT().\r | |
91 | If Size is NULL, then ASSERT().\r | |
92 | \r | |
93 | @param NameGuid A pointer to to the FFS filename GUID to search for \r | |
94 | within the firmware volumes that the currently \r | |
95 | executing module was loaded from.\r | |
96 | @param SectionType Indicates the FFS section type to search for within \r | |
97 | the FFS file specified by NameGuid.\r | |
98 | @param SectionInstance Indicates which section instance within the FFS \r | |
99 | file specified by NameGuid to retrieve.\r | |
100 | @param Buffer On output, a pointer to a callee allocated buffer \r | |
101 | containing the FFS file section that was found. \r | |
102 | It is the caller's responsibility to free this buffer \r | |
103 | using FreePool().\r | |
104 | @param Size On output, a pointer to the size, in bytes, of Buffer.\r | |
105 | \r | |
106 | \r | |
107 | @retval EFI_SUCCESS The specified FFS section was returned.\r | |
108 | @retval EFI_NOT_FOUND The specified FFS section could not be found.\r | |
109 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve \r | |
110 | the matching FFS section.\r | |
111 | @retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a \r | |
112 | device error.\r | |
113 | @retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the \r | |
114 | firmware volume that contains the matching FFS \r | |
115 | section does not allow reads. \r | |
116 | **/\r | |
117 | EFI_STATUS\r | |
118 | EFIAPI\r | |
119 | GetSectionFromFv (\r | |
120 | IN CONST EFI_GUID *NameGuid,\r | |
121 | IN EFI_SECTION_TYPE SectionType,\r | |
122 | IN UINTN SectionInstance,\r | |
123 | OUT VOID **Buffer,\r | |
124 | OUT UINTN *Size\r | |
125 | );\r | |
126 | \r | |
127 | \r | |
128 | /**\r | |
129 | Searches the FFS file the the currently executing module was loaded from and returns the first matching FFS section.\r | |
130 | \r | |
131 | This function searches the FFS file that the currently executing module was loaded from for a FFS sections of type SectionType.\r | |
132 | If the FFS file contains at least SectionInstance instances of the FFS section specified by SectionType, \r | |
133 | then the SectionInstance instance is returned in Buffer. Buffer is allocated using AllocatePool(), \r | |
134 | and the size of the allocated buffer is returned in Size. It is the caller's responsibility \r | |
135 | to use FreePool() to free the allocated buffer. See EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection() for \r | |
136 | details on how sections are retrieved from an FFS file based on SectionType and SectionInstance.\r | |
137 | \r | |
138 | If the currently executing module was not loaded from an FFS file, then EFI_NOT_FOUND is returned.\r | |
139 | If SectionType is EFI_SECTION_TE, and the search with an FFS file fails, \r | |
140 | the search will be retried with a section type of EFI_SECTION_PE32.\r | |
141 | This function must be called with a TPL <= TPL_NOTIFY.\r | |
142 | \r | |
143 | If Buffer is NULL, then ASSERT().\r | |
144 | If Size is NULL, then ASSERT().\r | |
145 | \r | |
146 | \r | |
147 | @param SectionType Indicates the FFS section type to search for within \r | |
148 | the FFS file that the currently executing module \r | |
149 | was loaded from.\r | |
150 | @param SectionInstance Indicates which section instance to retrieve within \r | |
151 | the FFS file that the currently executing module \r | |
152 | was loaded from.\r | |
153 | @param Buffer On output, a pointer to a callee allocated buffer \r | |
154 | containing the FFS file section that was found. \r | |
155 | It is the caller's responsibility to free this buffer \r | |
156 | using FreePool().\r | |
157 | @param Size On output, a pointer to the size, in bytes, of Buffer.\r | |
158 | \r | |
159 | @retval EFI_SUCCESS The specified FFS section was returned.\r | |
160 | @retval EFI_NOT_FOUND The specified FFS section could not be found.\r | |
161 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to retrieve \r | |
162 | the matching FFS section.\r | |
163 | @retval EFI_DEVICE_ERROR The FFS section could not be retrieves due to a \r | |
164 | device error.\r | |
165 | @retval EFI_ACCESS_DENIED The FFS section could not be retrieves because the \r | |
166 | firmware volume that contains the matching FFS \r | |
167 | section does not allow reads. \r | |
168 | \r | |
169 | **/\r | |
170 | EFI_STATUS\r | |
171 | EFIAPI\r | |
172 | GetSectionFromFfs (\r | |
173 | IN EFI_SECTION_TYPE SectionType,\r | |
174 | IN UINTN SectionInstance,\r | |
175 | OUT VOID **Buffer,\r | |
176 | OUT UINTN *Size\r | |
177 | );\r | |
178 | \r | |
179 | \r | |
180 | /**\r | |
181 | Get the image file buffer data and buffer size by its device path. \r | |
182 | \r | |
183 | Access the file either from a firmware volume, from a file system interface, \r | |
184 | or from the load file interface.\r | |
185 | \r | |
186 | Allocate memory to store the found image. The caller is responsible to free memory.\r | |
187 | \r | |
188 | If File is NULL, then NULL is returned.\r | |
189 | If FileSize is NULL, then NULL is returned.\r | |
190 | If AuthenticationStatus is NULL, then NULL is returned.\r | |
191 | \r | |
192 | @param[in] BootPolicy The policy for Open Image File.If TRUE, \r | |
193 | indicates that the request originates from \r | |
194 | the boot manager, and that the boot manager is\r | |
195 | attempting to load FilePath as a boot selection. \r | |
196 | If FALSE, then FilePath must match an exact \r | |
197 | file to be loaded.\r | |
198 | @param[in] FilePath Pointer to the device path of the file that is abstracted to\r | |
199 | the file buffer.\r | |
200 | @param[out] FileSize Pointer to the size of the abstracted file buffer.\r | |
201 | @param[out] AuthenticationStatus Pointer to a caller-allocated UINT32 in which the authentication\r | |
202 | status is returned.\r | |
203 | \r | |
204 | @retval NULL File is NULL, or FileSize is NULL, or the file can't be found.\r | |
205 | @retval other The abstracted file buffer. The caller is responsible to free memory.\r | |
206 | **/\r | |
207 | VOID *\r | |
208 | EFIAPI\r | |
209 | GetFileBufferByFilePath (\r | |
210 | IN BOOLEAN BootPolicy,\r | |
211 | IN CONST EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
212 | OUT UINTN *FileSize,\r | |
213 | OUT UINT32 *AuthenticationStatus\r | |
214 | );\r | |
215 | \r | |
216 | #endif\r | |
217 | \r |