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00899456 JY |
1 | /** @file\r |
2 | \r | |
bcee1b9f | 3 | Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>\r |
00899456 JY |
4 | \r |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions\r | |
7 | of the BSD License which accompanies this distribution. The\r | |
8 | 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 <Uefi.h>\r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/UefiDriverEntryPoint.h>\r | |
19 | #include <Library/BaseMemoryLib.h>\r | |
20 | #include <Library/DebugLib.h>\r | |
21 | #include <Library/PeCoffLib.h>\r | |
22 | #include <Library/UefiBootServicesTableLib.h>\r | |
23 | #include <Library/DxeServicesLib.h>\r | |
24 | #include <Library/CacheMaintenanceLib.h>\r | |
25 | #include <Library/UefiLib.h>\r | |
26 | \r | |
27 | /**\r | |
28 | Relocate this image under 4G memory.\r | |
29 | \r | |
30 | @param ImageHandle Handle of driver image.\r | |
31 | @param SystemTable Pointer to system table.\r | |
32 | \r | |
33 | @retval EFI_SUCCESS Image successfully relocated.\r | |
34 | @retval EFI_ABORTED Failed to relocate image.\r | |
35 | \r | |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | RelocateImageUnder4GIfNeeded (\r | |
39 | IN EFI_HANDLE ImageHandle,\r | |
40 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
41 | )\r | |
42 | {\r | |
43 | EFI_STATUS Status;\r | |
44 | UINT8 *Buffer;\r | |
45 | UINTN BufferSize;\r | |
46 | EFI_HANDLE NewImageHandle;\r | |
47 | UINTN Pages;\r | |
48 | EFI_PHYSICAL_ADDRESS FfsBuffer;\r | |
49 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
50 | VOID *Interface;\r | |
51 | \r | |
52 | //\r | |
53 | // If it is already <4G, no need do relocate\r | |
54 | //\r | |
55 | if ((UINTN)RelocateImageUnder4GIfNeeded < 0xFFFFFFFF) {\r | |
56 | return EFI_SUCCESS;\r | |
57 | }\r | |
58 | \r | |
59 | //\r | |
60 | // If locate gEfiCallerIdGuid success, it means 2nd entry.\r | |
61 | //\r | |
62 | Status = gBS->LocateProtocol (&gEfiCallerIdGuid, NULL, &Interface);\r | |
63 | if (!EFI_ERROR (Status)) {\r | |
64 | DEBUG ((EFI_D_INFO, "FspNotifyDxe - 2nd entry\n"));\r | |
65 | return EFI_SUCCESS;\r | |
66 | }\r | |
67 | \r | |
68 | DEBUG ((EFI_D_INFO, "FspNotifyDxe - 1st entry\n"));\r | |
69 | \r | |
70 | //\r | |
71 | // Here we install a dummy handle\r | |
72 | //\r | |
73 | NewImageHandle = NULL;\r | |
74 | Status = gBS->InstallProtocolInterface (\r | |
75 | &NewImageHandle,\r | |
76 | &gEfiCallerIdGuid,\r | |
77 | EFI_NATIVE_INTERFACE,\r | |
78 | NULL\r | |
79 | );\r | |
80 | ASSERT_EFI_ERROR (Status);\r | |
81 | \r | |
82 | //\r | |
83 | // Reload image itself to <4G mem\r | |
84 | //\r | |
85 | Status = GetSectionFromAnyFv (\r | |
86 | &gEfiCallerIdGuid,\r | |
87 | EFI_SECTION_PE32,\r | |
88 | 0,\r | |
89 | (VOID **) &Buffer,\r | |
90 | &BufferSize\r | |
91 | );\r | |
92 | ASSERT_EFI_ERROR (Status);\r | |
93 | ImageContext.Handle = Buffer;\r | |
94 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r | |
95 | //\r | |
96 | // Get information about the image being loaded\r | |
97 | //\r | |
98 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
99 | ASSERT_EFI_ERROR (Status);\r | |
100 | if (ImageContext.SectionAlignment > EFI_PAGE_SIZE) {\r | |
101 | Pages = EFI_SIZE_TO_PAGES ((UINTN) (ImageContext.ImageSize + ImageContext.SectionAlignment));\r | |
102 | } else {\r | |
103 | Pages = EFI_SIZE_TO_PAGES ((UINTN) ImageContext.ImageSize);\r | |
104 | }\r | |
105 | FfsBuffer = 0xFFFFFFFF;\r | |
106 | Status = gBS->AllocatePages (\r | |
107 | AllocateMaxAddress,\r | |
108 | EfiBootServicesCode,\r | |
109 | Pages,\r | |
110 | &FfsBuffer\r | |
111 | );\r | |
112 | ASSERT_EFI_ERROR (Status);\r | |
113 | ImageContext.ImageAddress = (PHYSICAL_ADDRESS)(UINTN)FfsBuffer;\r | |
114 | //\r | |
b9ca25cb | 115 | // Align buffer on section boundary\r |
00899456 JY |
116 | //\r |
117 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r | |
bcee1b9f | 118 | ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)ImageContext.SectionAlignment - 1);\r |
00899456 JY |
119 | //\r |
120 | // Load the image to our new buffer\r | |
121 | //\r | |
122 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
123 | ASSERT_EFI_ERROR (Status);\r | |
124 | \r | |
125 | //\r | |
126 | // Relocate the image in our new buffer\r | |
127 | //\r | |
128 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
129 | ASSERT_EFI_ERROR (Status);\r | |
130 | \r | |
131 | //\r | |
132 | // Free the buffer allocated by ReadSection since the image has been relocated in the new buffer\r | |
133 | //\r | |
134 | gBS->FreePool (Buffer);\r | |
135 | \r | |
136 | //\r | |
137 | // Flush the instruction cache so the image data is written before we execute it\r | |
138 | //\r | |
139 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r | |
140 | \r | |
141 | DEBUG ((EFI_D_INFO, "Loading driver at 0x%08x EntryPoint=0x%08x\n", (UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.EntryPoint));\r | |
142 | Status = ((EFI_IMAGE_ENTRY_POINT)(UINTN)(ImageContext.EntryPoint)) (NewImageHandle, gST);\r | |
143 | if (EFI_ERROR (Status)) {\r | |
144 | DEBUG ((EFI_D_ERROR, "Error: Image at 0x%08x start failed: %r\n", ImageContext.ImageAddress, Status));\r | |
145 | gBS->FreePages (FfsBuffer, Pages);\r | |
146 | }\r | |
147 | \r | |
148 | //\r | |
149 | // return error to unload >4G copy, if we already relocate itself to <4G.\r | |
150 | //\r | |
151 | return EFI_ALREADY_STARTED;\r | |
152 | }\r |