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f1ec65ba | 1 | /** @file\r |
2 | QEMU/KVM Firmware Configuration access\r | |
3 | \r | |
29874a8c | 4 | Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>\r |
0dc231c9 LE |
5 | Copyright (C) 2013, Red Hat, Inc.\r |
6 | \r | |
f1ec65ba | 7 | This program and the accompanying materials\r |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #ifndef __FW_CFG_LIB__\r | |
18 | #define __FW_CFG_LIB__\r | |
19 | \r | |
20 | typedef enum {\r | |
21 | QemuFwCfgItemSignature = 0x0000,\r | |
22 | QemuFwCfgItemInterfaceVersion = 0x0001,\r | |
23 | QemuFwCfgItemSystemUuid = 0x0002,\r | |
24 | QemuFwCfgItemRamSize = 0x0003,\r | |
25 | QemuFwCfgItemGraphicsEnabled = 0x0004,\r | |
26 | QemuFwCfgItemSmpCpuCount = 0x0005,\r | |
27 | QemuFwCfgItemMachineId = 0x0006,\r | |
28 | QemuFwCfgItemKernelAddress = 0x0007,\r | |
29 | QemuFwCfgItemKernelSize = 0x0008,\r | |
30 | QemuFwCfgItemKernelCommandLine = 0x0009,\r | |
31 | QemuFwCfgItemInitrdAddress = 0x000a,\r | |
32 | QemuFwCfgItemInitrdSize = 0x000b,\r | |
33 | QemuFwCfgItemBootDevice = 0x000c,\r | |
34 | QemuFwCfgItemNumaData = 0x000d,\r | |
35 | QemuFwCfgItemBootMenu = 0x000e,\r | |
36 | QemuFwCfgItemMaximumCpuCount = 0x000f,\r | |
37 | QemuFwCfgItemKernelEntry = 0x0010,\r | |
38 | QemuFwCfgItemKernelData = 0x0011,\r | |
39 | QemuFwCfgItemInitrdData = 0x0012,\r | |
40 | QemuFwCfgItemCommandLineAddress = 0x0013,\r | |
41 | QemuFwCfgItemCommandLineSize = 0x0014,\r | |
42 | QemuFwCfgItemCommandLineData = 0x0015,\r | |
43 | QemuFwCfgItemKernelSetupAddress = 0x0016,\r | |
44 | QemuFwCfgItemKernelSetupSize = 0x0017,\r | |
45 | QemuFwCfgItemKernelSetupData = 0x0018,\r | |
0ac9bc9b | 46 | QemuFwCfgItemFileDir = 0x0019,\r |
f1ec65ba | 47 | \r |
48 | QemuFwCfgItemX86AcpiTables = 0x8000,\r | |
49 | QemuFwCfgItemX86SmbiosTables = 0x8001,\r | |
50 | QemuFwCfgItemX86Irq0Override = 0x8002,\r | |
51 | QemuFwCfgItemX86E820Table = 0x8003,\r | |
52 | QemuFwCfgItemX86HpetData = 0x8004,\r | |
53 | \r | |
54 | } FIRMWARE_CONFIG_ITEM;\r | |
55 | \r | |
56 | \r | |
57 | /**\r | |
58 | Returns a boolean indicating if the firmware configuration interface\r | |
59 | is available or not.\r | |
60 | \r | |
0dc231c9 LE |
61 | This function may change fw_cfg state.\r |
62 | \r | |
f1ec65ba | 63 | @retval TRUE The interface is available\r |
64 | @retval FALSE The interface is not available\r | |
65 | \r | |
66 | **/\r | |
67 | BOOLEAN\r | |
68 | EFIAPI\r | |
69 | QemuFwCfgIsAvailable (\r | |
70 | VOID\r | |
71 | );\r | |
72 | \r | |
73 | \r | |
74 | /**\r | |
75 | Selects a firmware configuration item for reading.\r | |
76 | \r | |
77 | Following this call, any data read from this item will start from\r | |
78 | the beginning of the configuration item's data.\r | |
79 | \r | |
80 | @param[in] QemuFwCfgItem - Firmware Configuration item to read\r | |
81 | \r | |
82 | **/\r | |
83 | VOID\r | |
84 | EFIAPI\r | |
85 | QemuFwCfgSelectItem (\r | |
86 | IN FIRMWARE_CONFIG_ITEM QemuFwCfgItem\r | |
87 | );\r | |
88 | \r | |
89 | \r | |
90 | /**\r | |
91 | Reads firmware configuration bytes into a buffer\r | |
92 | \r | |
93 | If called multiple times, then the data read will\r | |
94 | continue at the offset of the firmware configuration\r | |
95 | item where the previous read ended.\r | |
96 | \r | |
97 | @param[in] Size - Size in bytes to read\r | |
98 | @param[in] Buffer - Buffer to store data into\r | |
99 | \r | |
100 | **/\r | |
101 | VOID\r | |
102 | EFIAPI\r | |
103 | QemuFwCfgReadBytes (\r | |
104 | IN UINTN Size,\r | |
105 | IN VOID *Buffer OPTIONAL\r | |
106 | );\r | |
107 | \r | |
108 | \r | |
29874a8c | 109 | /**\r |
110 | Writes firmware configuration bytes from a buffer\r | |
111 | \r | |
112 | If called multiple times, then the data written will\r | |
113 | continue at the offset of the firmware configuration\r | |
114 | item where the previous write ended.\r | |
115 | \r | |
116 | @param[in] Size - Size in bytes to write\r | |
117 | @param[in] Buffer - Buffer to read data from\r | |
118 | \r | |
119 | **/\r | |
120 | VOID\r | |
121 | EFIAPI\r | |
122 | QemuFwCfgWriteBytes (\r | |
123 | IN UINTN Size,\r | |
124 | IN VOID *Buffer\r | |
125 | );\r | |
126 | \r | |
127 | \r | |
f1ec65ba | 128 | /**\r |
129 | Reads a UINT8 firmware configuration value\r | |
130 | \r | |
131 | @return Value of Firmware Configuration item read\r | |
132 | \r | |
133 | **/\r | |
134 | UINT8\r | |
135 | EFIAPI\r | |
136 | QemuFwCfgRead8 (\r | |
137 | VOID\r | |
138 | );\r | |
139 | \r | |
140 | \r | |
141 | /**\r | |
142 | Reads a UINT16 firmware configuration value\r | |
143 | \r | |
144 | @return Value of Firmware Configuration item read\r | |
145 | \r | |
146 | **/\r | |
147 | UINT16\r | |
148 | EFIAPI\r | |
149 | QemuFwCfgRead16 (\r | |
150 | VOID\r | |
151 | );\r | |
152 | \r | |
153 | \r | |
154 | /**\r | |
155 | Reads a UINT32 firmware configuration value\r | |
156 | \r | |
157 | @return Value of Firmware Configuration item read\r | |
158 | \r | |
159 | **/\r | |
160 | UINT32\r | |
161 | EFIAPI\r | |
162 | QemuFwCfgRead32 (\r | |
163 | VOID\r | |
164 | );\r | |
165 | \r | |
166 | \r | |
167 | /**\r | |
168 | Reads a UINT64 firmware configuration value\r | |
169 | \r | |
170 | @return Value of Firmware Configuration item read\r | |
171 | \r | |
172 | **/\r | |
173 | UINT64\r | |
174 | EFIAPI\r | |
175 | QemuFwCfgRead64 (\r | |
176 | VOID\r | |
177 | );\r | |
178 | \r | |
179 | \r | |
0ac9bc9b | 180 | /**\r |
181 | Find the configuration item corresponding to the firmware configuration file.\r | |
182 | \r | |
183 | @param[in] Name - Name of file to look up.\r | |
184 | @param[out] Item - Configuration item corresponding to the file, to be passed\r | |
185 | to QemuFwCfgSelectItem ().\r | |
186 | @param[out] Size - Number of bytes in the file.\r | |
187 | \r | |
188 | @return RETURN_SUCCESS If file is found.\r | |
189 | RETURN_NOT_FOUND If file is not found.\r | |
190 | RETURN_UNSUPPORTED If firmware configuration is unavailable.\r | |
191 | \r | |
192 | **/\r | |
193 | RETURN_STATUS\r | |
194 | EFIAPI\r | |
195 | QemuFwCfgFindFile (\r | |
196 | IN CONST CHAR8 *Name,\r | |
197 | OUT FIRMWARE_CONFIG_ITEM *Item,\r | |
198 | OUT UINTN *Size\r | |
199 | );\r | |
0dc231c9 LE |
200 | \r |
201 | \r | |
202 | /**\r | |
203 | Returns a boolean indicating if the firmware configuration interface is\r | |
204 | available for library-internal purposes.\r | |
205 | \r | |
206 | This function never changes fw_cfg state.\r | |
207 | \r | |
208 | @retval TRUE The interface is available internally.\r | |
209 | @retval FALSE The interface is not available internally.\r | |
210 | **/\r | |
211 | BOOLEAN\r | |
212 | EFIAPI\r | |
213 | InternalQemuFwCfgIsAvailable (\r | |
214 | VOID\r | |
215 | );\r | |
216 | \r | |
14eb7a5b LE |
217 | \r |
218 | /**\r | |
219 | Determine if S3 support is explicitly enabled.\r | |
220 | \r | |
221 | @retval TRUE if S3 support is explicitly enabled.\r | |
222 | FALSE otherwise. This includes unavailability of the firmware\r | |
223 | configuration interface.\r | |
224 | **/\r | |
225 | BOOLEAN\r | |
226 | EFIAPI\r | |
227 | QemuFwCfgS3Enabled (\r | |
228 | VOID\r | |
229 | );\r | |
230 | \r | |
f1ec65ba | 231 | #endif\r |
232 | \r |