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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2013-2015, ARM Ltd. All rights reserved.<BR>\r | |
4 | \r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "AndroidFastbootApp.h"\r | |
16 | \r | |
17 | #include <Protocol/DevicePath.h>\r | |
18 | #include <Protocol/LoadedImage.h>\r | |
19 | \r | |
20 | #include <Library/DevicePathLib.h>\r | |
21 | #include <Library/UefiBootServicesTableLib.h>\r | |
22 | #include <Library/UefiLib.h>\r | |
23 | \r | |
24 | // Device Path representing an image in memory\r | |
25 | #pragma pack(1)\r | |
26 | typedef struct {\r | |
27 | MEMMAP_DEVICE_PATH Node1;\r | |
28 | EFI_DEVICE_PATH_PROTOCOL End;\r | |
29 | } MEMORY_DEVICE_PATH;\r | |
30 | #pragma pack()\r | |
31 | \r | |
32 | STATIC CONST MEMORY_DEVICE_PATH MemoryDevicePathTemplate =\r | |
33 | {\r | |
34 | {\r | |
35 | {\r | |
36 | HARDWARE_DEVICE_PATH,\r | |
37 | HW_MEMMAP_DP,\r | |
38 | {\r | |
39 | (UINT8)(sizeof (MEMMAP_DEVICE_PATH)),\r | |
40 | (UINT8)((sizeof (MEMMAP_DEVICE_PATH)) >> 8),\r | |
41 | },\r | |
42 | }, // Header\r | |
43 | 0, // StartingAddress (set at runtime)\r | |
44 | 0 // EndingAddress (set at runtime)\r | |
45 | }, // Node1\r | |
46 | {\r | |
47 | END_DEVICE_PATH_TYPE,\r | |
48 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
49 | { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }\r | |
50 | } // End\r | |
51 | };\r | |
52 | \r | |
53 | \r | |
54 | /**\r | |
55 | Start an EFI Application from a Device Path\r | |
56 | \r | |
57 | @param ParentImageHandle Handle of the calling image\r | |
58 | @param DevicePath Location of the EFI Application\r | |
59 | \r | |
60 | @retval EFI_SUCCESS All drivers have been connected\r | |
61 | @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found\r | |
62 | @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.\r | |
63 | \r | |
64 | **/\r | |
65 | STATIC\r | |
66 | EFI_STATUS\r | |
67 | StartEfiApplication (\r | |
68 | IN EFI_HANDLE ParentImageHandle,\r | |
69 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
70 | IN UINTN LoadOptionsSize,\r | |
71 | IN VOID* LoadOptions\r | |
72 | )\r | |
73 | {\r | |
74 | EFI_STATUS Status;\r | |
75 | EFI_HANDLE ImageHandle;\r | |
76 | EFI_LOADED_IMAGE_PROTOCOL* LoadedImage;\r | |
77 | \r | |
78 | // Load the image from the device path with Boot Services function\r | |
79 | Status = gBS->LoadImage (TRUE, ParentImageHandle, DevicePath, NULL, 0,\r | |
80 | &ImageHandle);\r | |
81 | if (EFI_ERROR (Status)) {\r | |
82 | return Status;\r | |
83 | }\r | |
84 | \r | |
85 | // Passed LoadOptions to the EFI Application\r | |
86 | if (LoadOptionsSize != 0) {\r | |
87 | Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid,\r | |
88 | (VOID **) &LoadedImage);\r | |
89 | if (EFI_ERROR (Status)) {\r | |
90 | return Status;\r | |
91 | }\r | |
92 | \r | |
93 | LoadedImage->LoadOptionsSize = LoadOptionsSize;\r | |
94 | LoadedImage->LoadOptions = LoadOptions;\r | |
95 | }\r | |
96 | \r | |
97 | // Before calling the image, enable the Watchdog Timer for the 5 Minute period\r | |
98 | gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r | |
99 | // Start the image\r | |
100 | Status = gBS->StartImage (ImageHandle, NULL, NULL);\r | |
101 | // Clear the Watchdog Timer after the image returns\r | |
102 | gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r | |
103 | \r | |
104 | return Status;\r | |
105 | }\r | |
106 | \r | |
107 | EFI_STATUS\r | |
108 | BootAndroidBootImg (\r | |
109 | IN UINTN BufferSize,\r | |
110 | IN VOID *Buffer\r | |
111 | )\r | |
112 | {\r | |
113 | EFI_STATUS Status;\r | |
114 | CHAR8 KernelArgs[ANDROID_BOOTIMG_KERNEL_ARGS_SIZE];\r | |
115 | VOID *Kernel;\r | |
116 | UINTN KernelSize;\r | |
117 | VOID *Ramdisk;\r | |
118 | UINTN RamdiskSize;\r | |
119 | MEMORY_DEVICE_PATH KernelDevicePath;\r | |
120 | CHAR16 *LoadOptions, *NewLoadOptions;\r | |
121 | \r | |
122 | Status = ParseAndroidBootImg (\r | |
123 | Buffer,\r | |
124 | &Kernel,\r | |
125 | &KernelSize,\r | |
126 | &Ramdisk,\r | |
127 | &RamdiskSize,\r | |
128 | KernelArgs\r | |
129 | );\r | |
130 | if (EFI_ERROR (Status)) {\r | |
131 | return Status;\r | |
132 | }\r | |
133 | \r | |
134 | KernelDevicePath = MemoryDevicePathTemplate;\r | |
135 | \r | |
136 | // Have to cast to UINTN before casting to EFI_PHYSICAL_ADDRESS in order to\r | |
137 | // appease GCC.\r | |
138 | KernelDevicePath.Node1.StartingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel;\r | |
139 | KernelDevicePath.Node1.EndingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel + KernelSize;\r | |
140 | \r | |
141 | // Initialize Linux command line\r | |
142 | LoadOptions = CatSPrint (NULL, L"%a", KernelArgs);\r | |
143 | if (LoadOptions == NULL) {\r | |
144 | return EFI_OUT_OF_RESOURCES;\r | |
145 | }\r | |
146 | \r | |
147 | if (RamdiskSize != 0) {\r | |
148 | NewLoadOptions = CatSPrint (LoadOptions, L" initrd=0x%x,0x%x",\r | |
149 | (UINTN)Ramdisk, RamdiskSize);\r | |
150 | FreePool (LoadOptions);\r | |
151 | if (NewLoadOptions == NULL) {\r | |
152 | return EFI_OUT_OF_RESOURCES;\r | |
153 | }\r | |
154 | LoadOptions = NewLoadOptions;\r | |
155 | }\r | |
156 | \r | |
157 | Status = StartEfiApplication (gImageHandle,\r | |
158 | (EFI_DEVICE_PATH_PROTOCOL *) &KernelDevicePath,\r | |
159 | StrSize (LoadOptions),\r | |
160 | LoadOptions);\r | |
161 | if (EFI_ERROR (Status)) {\r | |
162 | DEBUG ((EFI_D_ERROR, "Couldn't Boot Linux: %d\n", Status));\r | |
163 | Status = EFI_DEVICE_ERROR;\r | |
164 | goto FreeLoadOptions;\r | |
165 | }\r | |
166 | \r | |
167 | // If we got here we do a confused face because BootLinuxFdt returned,\r | |
168 | // reporting success.\r | |
169 | DEBUG ((EFI_D_ERROR, "WARNING: BdsBootLinuxFdt returned EFI_SUCCESS.\n"));\r | |
170 | return EFI_SUCCESS;\r | |
171 | \r | |
172 | FreeLoadOptions:\r | |
173 | FreePool (LoadOptions);\r | |
174 | return Status;\r | |
175 | }\r |