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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
4 | This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | **/\r | |
13 | \r | |
14 | #include <Uefi.h>\r | |
15 | \r | |
16 | #include <Library/BaseLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | #include <Library/LoadLinuxLib.h>\r | |
19 | #include <Library/MemoryAllocationLib.h>\r | |
20 | #include <Library/QemuFwCfgLib.h>\r | |
21 | #include <Library/UefiBootServicesTableLib.h>\r | |
22 | #include <Library/UefiLib.h>\r | |
23 | \r | |
24 | \r | |
25 | EFI_STATUS\r | |
26 | TryRunningQemuKernel (\r | |
27 | VOID\r | |
28 | )\r | |
29 | {\r | |
30 | EFI_STATUS Status;\r | |
31 | UINTN KernelSize;\r | |
32 | UINTN KernelInitialSize;\r | |
33 | VOID *KernelBuf;\r | |
34 | UINTN SetupSize;\r | |
35 | VOID *SetupBuf;\r | |
36 | UINTN CommandLineSize;\r | |
37 | CHAR8 *CommandLine;\r | |
38 | UINTN InitrdSize;\r | |
39 | VOID* InitrdData;\r | |
40 | \r | |
41 | SetupBuf = NULL;\r | |
42 | SetupSize = 0;\r | |
43 | KernelBuf = NULL;\r | |
44 | KernelInitialSize = 0;\r | |
45 | CommandLine = NULL;\r | |
46 | CommandLineSize = 0;\r | |
47 | InitrdData = NULL;\r | |
48 | InitrdSize = 0;\r | |
49 | \r | |
50 | if (!QemuFwCfgIsAvailable ()) {\r | |
51 | return EFI_NOT_FOUND;\r | |
52 | }\r | |
53 | \r | |
54 | QemuFwCfgSelectItem (QemuFwCfgItemKernelSize);\r | |
55 | KernelSize = (UINTN) QemuFwCfgRead64 ();\r | |
56 | \r | |
57 | QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupSize);\r | |
58 | SetupSize = (UINTN) QemuFwCfgRead64 ();\r | |
59 | \r | |
60 | if (KernelSize == 0 || SetupSize == 0) {\r | |
61 | DEBUG ((EFI_D_INFO, "qemu -kernel was not used.\n"));\r | |
62 | return EFI_NOT_FOUND;\r | |
63 | }\r | |
64 | \r | |
65 | SetupBuf = LoadLinuxAllocateKernelSetupPages (EFI_SIZE_TO_PAGES (SetupSize));\r | |
66 | if (SetupBuf == NULL) {\r | |
67 | DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel setup!\n"));\r | |
68 | return EFI_OUT_OF_RESOURCES;\r | |
69 | }\r | |
70 | \r | |
71 | DEBUG ((EFI_D_INFO, "Setup size: 0x%x\n", (UINT32) SetupSize));\r | |
72 | DEBUG ((EFI_D_INFO, "Reading kernel setup image ..."));\r | |
73 | QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupData);\r | |
74 | QemuFwCfgReadBytes (SetupSize, SetupBuf);\r | |
75 | DEBUG ((EFI_D_INFO, " [done]\n"));\r | |
76 | \r | |
77 | Status = LoadLinuxCheckKernelSetup (SetupBuf, SetupSize);\r | |
78 | if (EFI_ERROR (Status)) {\r | |
79 | goto FreeAndReturn;\r | |
80 | }\r | |
81 | \r | |
82 | Status = LoadLinuxInitializeKernelSetup (SetupBuf);\r | |
83 | if (EFI_ERROR (Status)) {\r | |
84 | goto FreeAndReturn;\r | |
85 | }\r | |
86 | \r | |
87 | KernelInitialSize = LoadLinuxGetKernelSize (SetupBuf, KernelSize);\r | |
88 | if (KernelInitialSize == 0) {\r | |
89 | Status = EFI_UNSUPPORTED;\r | |
90 | goto FreeAndReturn;\r | |
91 | }\r | |
92 | \r | |
93 | KernelBuf = LoadLinuxAllocateKernelPages (\r | |
94 | SetupBuf,\r | |
95 | EFI_SIZE_TO_PAGES (KernelInitialSize));\r | |
96 | if (KernelBuf == NULL) {\r | |
97 | DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel!\n"));\r | |
98 | Status = EFI_OUT_OF_RESOURCES;\r | |
99 | goto FreeAndReturn;\r | |
100 | }\r | |
101 | \r | |
102 | DEBUG ((EFI_D_INFO, "Kernel size: 0x%x\n", (UINT32) KernelSize));\r | |
103 | DEBUG ((EFI_D_INFO, "Reading kernel image ..."));\r | |
104 | QemuFwCfgSelectItem (QemuFwCfgItemKernelData);\r | |
105 | QemuFwCfgReadBytes (KernelSize, KernelBuf);\r | |
106 | DEBUG ((EFI_D_INFO, " [done]\n"));\r | |
107 | \r | |
108 | QemuFwCfgSelectItem (QemuFwCfgItemCommandLineSize);\r | |
109 | CommandLineSize = (UINTN) QemuFwCfgRead64 ();\r | |
110 | \r | |
111 | if (CommandLineSize > 0) {\r | |
112 | CommandLine = LoadLinuxAllocateCommandLinePages (\r | |
113 | EFI_SIZE_TO_PAGES (CommandLineSize));\r | |
114 | QemuFwCfgSelectItem (QemuFwCfgItemCommandLineData);\r | |
115 | QemuFwCfgReadBytes (CommandLineSize, CommandLine);\r | |
116 | } else {\r | |
117 | CommandLine = NULL;\r | |
118 | }\r | |
119 | \r | |
120 | Status = LoadLinuxSetCommandLine (SetupBuf, CommandLine);\r | |
121 | if (EFI_ERROR (Status)) {\r | |
122 | goto FreeAndReturn;\r | |
123 | }\r | |
124 | \r | |
125 | QemuFwCfgSelectItem (QemuFwCfgItemInitrdSize);\r | |
126 | InitrdSize = (UINTN) QemuFwCfgRead64 ();\r | |
127 | \r | |
128 | if (InitrdSize > 0) {\r | |
129 | InitrdData = LoadLinuxAllocateInitrdPages (\r | |
130 | SetupBuf,\r | |
131 | EFI_SIZE_TO_PAGES (InitrdSize)\r | |
132 | );\r | |
133 | DEBUG ((EFI_D_INFO, "Initrd size: 0x%x\n", (UINT32) InitrdSize));\r | |
134 | DEBUG ((EFI_D_INFO, "Reading initrd image ..."));\r | |
135 | QemuFwCfgSelectItem (QemuFwCfgItemInitrdData);\r | |
136 | QemuFwCfgReadBytes (InitrdSize, InitrdData);\r | |
137 | DEBUG ((EFI_D_INFO, " [done]\n"));\r | |
138 | } else {\r | |
139 | InitrdData = NULL;\r | |
140 | }\r | |
141 | \r | |
142 | Status = LoadLinuxSetInitrd (SetupBuf, InitrdData, InitrdSize);\r | |
143 | if (EFI_ERROR (Status)) {\r | |
144 | goto FreeAndReturn;\r | |
145 | }\r | |
146 | \r | |
147 | //\r | |
148 | // Signal the EVT_SIGNAL_READY_TO_BOOT event\r | |
149 | //\r | |
150 | EfiSignalEventReadyToBoot();\r | |
151 | \r | |
152 | Status = LoadLinux (KernelBuf, SetupBuf);\r | |
153 | \r | |
154 | FreeAndReturn:\r | |
155 | if (SetupBuf != NULL) {\r | |
156 | FreePages (SetupBuf, EFI_SIZE_TO_PAGES (SetupSize));\r | |
157 | }\r | |
158 | if (KernelBuf != NULL) {\r | |
159 | FreePages (KernelBuf, EFI_SIZE_TO_PAGES (KernelInitialSize));\r | |
160 | }\r | |
161 | if (CommandLine != NULL) {\r | |
162 | FreePages (CommandLine, EFI_SIZE_TO_PAGES (CommandLineSize));\r | |
163 | }\r | |
164 | if (InitrdData != NULL) {\r | |
165 | FreePages (InitrdData, EFI_SIZE_TO_PAGES (InitrdSize));\r | |
166 | }\r | |
167 | \r | |
168 | return Status;\r | |
169 | }\r | |
170 | \r |