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1/** @file\r
2\r
bd9a5182 3 Copyright (c) 2013-2015, ARM Ltd. All rights reserved.<BR>\r
f6755908 4\r
878b807a 5 SPDX-License-Identifier: BSD-2-Clause-Patent\r
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6\r
7**/\r
8\r
9#include "AndroidFastbootApp.h"\r
10\r
11#include <Protocol/DevicePath.h>\r
fcf41edf 12#include <Protocol/LoadedImage.h>\r
f6755908 13\r
f6755908 14#include <Library/DevicePathLib.h>\r
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15#include <Library/UefiBootServicesTableLib.h>\r
16#include <Library/UefiLib.h>\r
f6755908 17\r
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18// Device Path representing an image in memory\r
19#pragma pack(1)\r
20typedef struct {\r
21 MEMMAP_DEVICE_PATH Node1;\r
22 EFI_DEVICE_PATH_PROTOCOL End;\r
23} MEMORY_DEVICE_PATH;\r
24#pragma pack()\r
25\r
26STATIC CONST MEMORY_DEVICE_PATH MemoryDevicePathTemplate =\r
27{\r
28 {\r
29 {\r
30 HARDWARE_DEVICE_PATH,\r
31 HW_MEMMAP_DP,\r
32 {\r
33 (UINT8)(sizeof (MEMMAP_DEVICE_PATH)),\r
34 (UINT8)((sizeof (MEMMAP_DEVICE_PATH)) >> 8),\r
35 },\r
36 }, // Header\r
37 0, // StartingAddress (set at runtime)\r
38 0 // EndingAddress (set at runtime)\r
39 }, // Node1\r
40 {\r
41 END_DEVICE_PATH_TYPE,\r
42 END_ENTIRE_DEVICE_PATH_SUBTYPE,\r
b0fdce95 43 { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }\r
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44 } // End\r
45};\r
46\r
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47\r
48/**\r
49 Start an EFI Application from a Device Path\r
50\r
51 @param ParentImageHandle Handle of the calling image\r
52 @param DevicePath Location of the EFI Application\r
53\r
54 @retval EFI_SUCCESS All drivers have been connected\r
55 @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found\r
56 @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.\r
57\r
58**/\r
59STATIC\r
60EFI_STATUS\r
61StartEfiApplication (\r
62 IN EFI_HANDLE ParentImageHandle,\r
63 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
64 IN UINTN LoadOptionsSize,\r
65 IN VOID* LoadOptions\r
66 )\r
67{\r
68 EFI_STATUS Status;\r
69 EFI_HANDLE ImageHandle;\r
70 EFI_LOADED_IMAGE_PROTOCOL* LoadedImage;\r
71\r
72 // Load the image from the device path with Boot Services function\r
73 Status = gBS->LoadImage (TRUE, ParentImageHandle, DevicePath, NULL, 0,\r
74 &ImageHandle);\r
75 if (EFI_ERROR (Status)) {\r
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76 //\r
77 // With EFI_SECURITY_VIOLATION retval, the Image was loaded and an ImageHandle was created\r
78 // with a valid EFI_LOADED_IMAGE_PROTOCOL, but the image can not be started right now.\r
79 // If the caller doesn't have the option to defer the execution of an image, we should\r
80 // unload image for the EFI_SECURITY_VIOLATION to avoid resource leak.\r
81 //\r
82 if (Status == EFI_SECURITY_VIOLATION) {\r
83 gBS->UnloadImage (ImageHandle);\r
84 }\r
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85 return Status;\r
86 }\r
87\r
88 // Passed LoadOptions to the EFI Application\r
89 if (LoadOptionsSize != 0) {\r
90 Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid,\r
91 (VOID **) &LoadedImage);\r
92 if (EFI_ERROR (Status)) {\r
93 return Status;\r
94 }\r
95\r
96 LoadedImage->LoadOptionsSize = LoadOptionsSize;\r
97 LoadedImage->LoadOptions = LoadOptions;\r
98 }\r
99\r
100 // Before calling the image, enable the Watchdog Timer for the 5 Minute period\r
101 gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r
102 // Start the image\r
103 Status = gBS->StartImage (ImageHandle, NULL, NULL);\r
104 // Clear the Watchdog Timer after the image returns\r
105 gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r
106\r
107 return Status;\r
108}\r
109\r
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110EFI_STATUS\r
111BootAndroidBootImg (\r
112 IN UINTN BufferSize,\r
113 IN VOID *Buffer\r
114 )\r
115{\r
f6755908 116 EFI_STATUS Status;\r
6e414300 117 CHAR8 KernelArgs[ANDROID_BOOTIMG_KERNEL_ARGS_SIZE];\r
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118 VOID *Kernel;\r
119 UINTN KernelSize;\r
120 VOID *Ramdisk;\r
121 UINTN RamdiskSize;\r
122 MEMORY_DEVICE_PATH KernelDevicePath;\r
34e0bcea 123 CHAR16 *LoadOptions, *NewLoadOptions;\r
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124\r
125 Status = ParseAndroidBootImg (\r
126 Buffer,\r
127 &Kernel,\r
128 &KernelSize,\r
129 &Ramdisk,\r
130 &RamdiskSize,\r
131 KernelArgs\r
132 );\r
133 if (EFI_ERROR (Status)) {\r
134 return Status;\r
135 }\r
136\r
137 KernelDevicePath = MemoryDevicePathTemplate;\r
138\r
139 // Have to cast to UINTN before casting to EFI_PHYSICAL_ADDRESS in order to\r
140 // appease GCC.\r
141 KernelDevicePath.Node1.StartingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel;\r
142 KernelDevicePath.Node1.EndingAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Kernel + KernelSize;\r
143\r
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144 // Initialize Linux command line\r
145 LoadOptions = CatSPrint (NULL, L"%a", KernelArgs);\r
146 if (LoadOptions == NULL) {\r
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147 return EFI_OUT_OF_RESOURCES;\r
148 }\r
149\r
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150 if (RamdiskSize != 0) {\r
151 NewLoadOptions = CatSPrint (LoadOptions, L" initrd=0x%x,0x%x",\r
152 (UINTN)Ramdisk, RamdiskSize);\r
153 FreePool (LoadOptions);\r
154 if (NewLoadOptions == NULL) {\r
155 return EFI_OUT_OF_RESOURCES;\r
156 }\r
157 LoadOptions = NewLoadOptions;\r
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158 }\r
159\r
fcf41edf 160 Status = StartEfiApplication (gImageHandle,\r
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161 (EFI_DEVICE_PATH_PROTOCOL *) &KernelDevicePath,\r
162 StrSize (LoadOptions),\r
163 LoadOptions);\r
f6755908 164 if (EFI_ERROR (Status)) {\r
a1878955 165 DEBUG ((DEBUG_ERROR, "Couldn't Boot Linux: %d\n", Status));\r
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166 Status = EFI_DEVICE_ERROR;\r
167 goto FreeLoadOptions;\r
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168 }\r
169\r
170 // If we got here we do a confused face because BootLinuxFdt returned,\r
171 // reporting success.\r
a1878955 172 DEBUG ((DEBUG_ERROR, "WARNING: BdsBootLinuxFdt returned EFI_SUCCESS.\n"));\r
f6755908 173 return EFI_SUCCESS;\r
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174\r
175FreeLoadOptions:\r
176 FreePool (LoadOptions);\r
177 return Status;\r
f6755908 178}\r