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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. 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 | Module Name:\r | |
13 | \r | |
14 | DebugSupport.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Top level C file for debug support driver. Contains initialization function.\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | //\r | |
25 | // private header files\r | |
26 | //\r | |
27 | #include "plDebugSupport.h"\r | |
28 | \r | |
29 | //\r | |
30 | // This is a global that is the actual interface\r | |
31 | //\r | |
32 | EFI_DEBUG_SUPPORT_PROTOCOL gDebugSupportProtocolInterface = {\r | |
33 | EFI_ISA,\r | |
34 | GetMaximumProcessorIndex,\r | |
35 | RegisterPeriodicCallback,\r | |
36 | RegisterExceptionCallback,\r | |
37 | InvalidateInstructionCache\r | |
38 | };\r | |
39 | \r | |
40 | //\r | |
41 | // Driver Entry Point\r | |
42 | //\r | |
43 | EFI_STATUS\r | |
44 | InitializeDebugSupportDriver (\r | |
45 | IN EFI_HANDLE ImageHandle,\r | |
46 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
47 | )\r | |
48 | /*++\r | |
49 | \r | |
50 | Routine Description:\r | |
51 | Driver entry point. Checks to see there's not already a DebugSupport protocol\r | |
52 | installed for the selected processor before installing protocol.\r | |
53 | \r | |
54 | Arguments:\r | |
55 | IN EFI_HANDLE ImageHandle,\r | |
56 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
57 | \r | |
58 | Returns:\r | |
59 | \r | |
60 | EFI_STATUS\r | |
61 | \r | |
62 | --*/\r | |
63 | // TODO: ImageHandle - add argument and description to function comment\r | |
64 | // TODO: SystemTable - add argument and description to function comment\r | |
65 | {\r | |
66 | EFI_LOADED_IMAGE_PROTOCOL *LoadedImageProtocolPtr;\r | |
67 | EFI_STATUS Status;\r | |
68 | EFI_HANDLE Handle;\r | |
69 | EFI_HANDLE *HandlePtr;\r | |
70 | UINTN NumHandles;\r | |
71 | EFI_DEBUG_SUPPORT_PROTOCOL *DebugSupportProtocolPtr;\r | |
72 | \r | |
73 | //\r | |
74 | // Install Protocol Interface...\r | |
75 | //\r | |
76 | // First check to see that the debug support protocol for this processor\r | |
77 | // type is not already installed\r | |
78 | //\r | |
79 | Status = gBS->LocateHandleBuffer (\r | |
80 | ByProtocol,\r | |
81 | &gEfiDebugSupportProtocolGuid,\r | |
82 | NULL,\r | |
83 | &NumHandles,\r | |
84 | &HandlePtr\r | |
85 | );\r | |
86 | \r | |
87 | if (Status != EFI_NOT_FOUND) {\r | |
88 | do {\r | |
89 | NumHandles--;\r | |
90 | Status = gBS->OpenProtocol (\r | |
91 | HandlePtr[NumHandles],\r | |
92 | &gEfiDebugSupportProtocolGuid,\r | |
93 | (VOID **) &DebugSupportProtocolPtr,\r | |
94 | ImageHandle,\r | |
95 | NULL,\r | |
96 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
97 | );\r | |
98 | if (Status == EFI_SUCCESS && DebugSupportProtocolPtr->Isa == EFI_ISA) {\r | |
99 | gBS->FreePool (HandlePtr);\r | |
100 | Status = EFI_ALREADY_STARTED;\r | |
101 | goto ErrExit;\r | |
102 | }\r | |
103 | } while (NumHandles > 0);\r | |
104 | gBS->FreePool (HandlePtr);\r | |
105 | }\r | |
106 | \r | |
107 | //\r | |
108 | // Get our image information and install platform specific unload handler\r | |
109 | //\r | |
110 | Status = gBS->OpenProtocol (\r | |
111 | ImageHandle,\r | |
112 | &gEfiLoadedImageProtocolGuid,\r | |
113 | (VOID **) &LoadedImageProtocolPtr,\r | |
114 | ImageHandle,\r | |
115 | NULL,\r | |
116 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
117 | );\r | |
118 | ASSERT (!EFI_ERROR (Status));\r | |
119 | if (Status != EFI_SUCCESS) {\r | |
120 | goto ErrExit;\r | |
121 | }\r | |
122 | \r | |
123 | LoadedImageProtocolPtr->Unload = plUnloadDebugSupportDriver;\r | |
124 | \r | |
125 | //\r | |
126 | // Call hook for platform specific initialization\r | |
127 | //\r | |
128 | Status = plInitializeDebugSupportDriver ();\r | |
129 | ASSERT (!EFI_ERROR (Status));\r | |
130 | if (Status != EFI_SUCCESS) {\r | |
131 | goto ErrExit;\r | |
132 | }\r | |
133 | \r | |
134 | //\r | |
135 | // Install DebugSupport protocol to new handle\r | |
136 | //\r | |
137 | Handle = NULL;\r | |
138 | Status = gBS->InstallProtocolInterface (\r | |
139 | &Handle,\r | |
140 | &gEfiDebugSupportProtocolGuid,\r | |
141 | EFI_NATIVE_INTERFACE,\r | |
142 | &gDebugSupportProtocolInterface\r | |
143 | );\r | |
144 | ASSERT (!EFI_ERROR (Status));\r | |
145 | if (Status != EFI_SUCCESS) {\r | |
146 | goto ErrExit;\r | |
147 | }\r | |
148 | \r | |
149 | ErrExit:\r | |
150 | return Status;\r | |
151 | }\r |