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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>\r | |
4 | Copyright (c) 2017, Linaro. All rights reserved.\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. 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 | #include <Library/AndroidBootImgLib.h>\r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/BdsLib.h>\r | |
19 | #include <Library/DebugLib.h>\r | |
20 | #include <Library/DevicePathLib.h>\r | |
21 | #include <Library/MemoryAllocationLib.h>\r | |
22 | #include <Library/UefiBootServicesTableLib.h>\r | |
23 | \r | |
24 | #include <Protocol/BlockIo.h>\r | |
25 | #include <Protocol/DevicePathFromText.h>\r | |
26 | \r | |
27 | /* Validate the node is media hard drive type */\r | |
28 | EFI_STATUS\r | |
29 | ValidateAndroidMediaDevicePath (\r | |
30 | IN EFI_DEVICE_PATH *DevicePath\r | |
31 | )\r | |
32 | {\r | |
33 | EFI_DEVICE_PATH_PROTOCOL *Node, *NextNode;\r | |
34 | \r | |
35 | NextNode = DevicePath;\r | |
36 | while (NextNode != NULL) {\r | |
37 | Node = NextNode;\r | |
38 | if (IS_DEVICE_PATH_NODE (Node, MEDIA_DEVICE_PATH, MEDIA_HARDDRIVE_DP)) {\r | |
39 | return EFI_SUCCESS;\r | |
40 | }\r | |
41 | NextNode = NextDevicePathNode (Node);\r | |
42 | }\r | |
43 | return EFI_INVALID_PARAMETER;\r | |
44 | }\r | |
45 | \r | |
46 | EFI_STATUS\r | |
47 | EFIAPI\r | |
48 | AndroidBootAppEntryPoint (\r | |
49 | IN EFI_HANDLE ImageHandle,\r | |
50 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
51 | )\r | |
52 | {\r | |
53 | EFI_STATUS Status;\r | |
54 | CHAR16 *BootPathStr;\r | |
55 | EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL *EfiDevicePathFromTextProtocol;\r | |
56 | EFI_DEVICE_PATH *DevicePath;\r | |
57 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
58 | UINT32 MediaId, BlockSize;\r | |
59 | VOID *Buffer;\r | |
60 | EFI_HANDLE Handle;\r | |
61 | UINTN BootImgSize;\r | |
62 | \r | |
63 | BootPathStr = (CHAR16 *)PcdGetPtr (PcdAndroidBootDevicePath);\r | |
64 | ASSERT (BootPathStr != NULL);\r | |
65 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL,\r | |
66 | (VOID **)&EfiDevicePathFromTextProtocol);\r | |
67 | ASSERT_EFI_ERROR(Status);\r | |
68 | DevicePath = (EFI_DEVICE_PATH *)EfiDevicePathFromTextProtocol->ConvertTextToDevicePath (BootPathStr);\r | |
69 | ASSERT (DevicePath != NULL);\r | |
70 | \r | |
71 | Status = ValidateAndroidMediaDevicePath (DevicePath);\r | |
72 | if (EFI_ERROR (Status)) {\r | |
73 | return Status;\r | |
74 | }\r | |
75 | \r | |
76 | Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid,\r | |
77 | &DevicePath, &Handle);\r | |
78 | if (EFI_ERROR (Status)) {\r | |
79 | return Status;\r | |
80 | }\r | |
81 | \r | |
82 | Status = gBS->OpenProtocol (\r | |
83 | Handle,\r | |
84 | &gEfiBlockIoProtocolGuid,\r | |
85 | (VOID **) &BlockIo,\r | |
86 | gImageHandle,\r | |
87 | NULL,\r | |
88 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
89 | );\r | |
90 | if (EFI_ERROR (Status)) {\r | |
91 | DEBUG ((DEBUG_ERROR, "Failed to get BlockIo: %r\n", Status));\r | |
92 | return Status;\r | |
93 | }\r | |
94 | \r | |
95 | MediaId = BlockIo->Media->MediaId;\r | |
96 | BlockSize = BlockIo->Media->BlockSize;\r | |
97 | Buffer = AllocatePages (EFI_SIZE_TO_PAGES (sizeof(ANDROID_BOOTIMG_HEADER)));\r | |
98 | if (Buffer == NULL) {\r | |
99 | return EFI_BUFFER_TOO_SMALL;\r | |
100 | }\r | |
101 | /* Load header of boot.img */\r | |
102 | Status = BlockIo->ReadBlocks (\r | |
103 | BlockIo,\r | |
104 | MediaId,\r | |
105 | 0,\r | |
106 | BlockSize,\r | |
107 | Buffer\r | |
108 | );\r | |
109 | Status = AndroidBootImgGetImgSize (Buffer, &BootImgSize);\r | |
110 | if (EFI_ERROR (Status)) {\r | |
111 | DEBUG ((DEBUG_ERROR, "Failed to get AndroidBootImg Size: %r\n", Status));\r | |
112 | return Status;\r | |
113 | }\r | |
114 | BootImgSize = ALIGN_VALUE (BootImgSize, BlockSize);\r | |
115 | FreePages (Buffer, EFI_SIZE_TO_PAGES (sizeof(ANDROID_BOOTIMG_HEADER)));\r | |
116 | \r | |
117 | /* Both PartitionStart and PartitionSize are counted as block size. */\r | |
118 | Buffer = AllocatePages (EFI_SIZE_TO_PAGES (BootImgSize));\r | |
119 | if (Buffer == NULL) {\r | |
120 | return EFI_BUFFER_TOO_SMALL;\r | |
121 | }\r | |
122 | \r | |
123 | /* Load header of boot.img */\r | |
124 | Status = BlockIo->ReadBlocks (\r | |
125 | BlockIo,\r | |
126 | MediaId,\r | |
127 | 0,\r | |
128 | BootImgSize,\r | |
129 | Buffer\r | |
130 | );\r | |
131 | if (EFI_ERROR (Status)) {\r | |
132 | DEBUG ((DEBUG_ERROR, "Failed to read blocks: %r\n", Status));\r | |
133 | goto EXIT;\r | |
134 | }\r | |
135 | \r | |
136 | Status = AndroidBootImgBoot (Buffer, BootImgSize);\r | |
137 | \r | |
138 | EXIT:\r | |
139 | return Status;\r | |
140 | }\r |