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1 | /** @file\r |
2 | C Entry point for the SEC. First C code after the reset vector.\r |
3 | \r |
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4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
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5 | \r |
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6 | This program and the accompanying materials\r |
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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 <PiPei.h>\r |
17 | \r |
18 | #include <Library/DebugLib.h>\r |
19 | #include <Library/PrePiLib.h>\r |
20 | #include <Library/PcdLib.h>\r |
21 | #include <Library/IoLib.h>\r |
22 | #include <Library/ArmLib.h>\r |
23 | #include <Library/PeCoffGetEntryPointLib.h>\r |
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24 | #include <Library/DebugAgentLib.h>\r |
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25 | \r |
26 | #include <Ppi/GuidedSectionExtraction.h>\r |
27 | #include <Guid/LzmaDecompress.h>\r |
28 | \r |
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29 | #include <ArmEb/ArmEb.h>\r |
30 | \r |
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31 | #include "LzmaDecompress.h"\r |
32 | \r |
33 | VOID\r |
34 | EFIAPI \r |
35 | _ModuleEntryPoint(\r |
36 | VOID\r |
37 | );\r |
38 | \r |
39 | CHAR8 *\r |
40 | DeCygwinPathIfNeeded (\r |
41 | IN CHAR8 *Name\r |
42 | );\r |
43 | \r |
44 | RETURN_STATUS\r |
45 | EFIAPI\r |
46 | SerialPortInitialize (\r |
47 | VOID\r |
48 | );\r |
49 | \r |
50 | \r |
51 | VOID\r |
52 | UartInit (\r |
53 | VOID\r |
54 | )\r |
55 | {\r |
56 | // SEC phase needs to run library constructors by hand.\r |
57 | // This assumes we are linked agains the SerialLib\r |
58 | // In non SEC modules the init call is in autogenerated code.\r |
59 | SerialPortInitialize ();\r |
60 | }\r |
61 | \r |
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62 | VOID\r |
63 | TimerInit (\r |
64 | VOID\r |
65 | )\r |
66 | {\r |
67 | // configure SP810 to use 1MHz clock and disable\r |
68 | MmioAndThenOr32 (EB_SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);\r |
69 | // Enable\r |
70 | MmioOr32 (EB_SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER2_EN);\r |
71 | \r |
72 | // configure timer 2 for one shot operation, 32 bits, no prescaler, and interrupt disabled\r |
73 | MmioOr32 (EB_SP804_TIMER2_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_ONESHOT | SP804_TIMER_CTRL_32BIT | SP804_PRESCALE_DIV_1);\r |
74 | \r |
75 | // preload the timer count register\r |
76 | MmioWrite32 (EB_SP804_TIMER2_BASE + SP804_TIMER_LOAD_REG, 1);\r |
77 | \r |
78 | // enable the timer\r |
79 | MmioOr32 (EB_SP804_TIMER2_BASE + SP804_TIMER_CONTROL_REG, SP804_TIMER_CTRL_ENABLE);\r |
80 | }\r |
81 | \r |
82 | \r |
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83 | VOID\r |
84 | InitCache (\r |
85 | IN UINT32 MemoryBase,\r |
86 | IN UINT32 MemoryLength\r |
87 | );\r |
88 | \r |
89 | EFI_STATUS\r |
90 | EFIAPI\r |
91 | ExtractGuidedSectionLibConstructor (\r |
92 | VOID\r |
93 | );\r |
94 | \r |
95 | EFI_STATUS\r |
96 | EFIAPI\r |
97 | LzmaDecompressLibConstructor (\r |
98 | VOID\r |
99 | );\r |
100 | \r |
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101 | \r |
102 | VOID\r |
103 | CEntryPoint (\r |
104 | IN VOID *MemoryBase,\r |
105 | IN UINTN MemorySize,\r |
106 | IN VOID *StackBase,\r |
107 | IN UINTN StackSize\r |
108 | )\r |
109 | {\r |
110 | VOID *HobBase;\r |
111 | \r |
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112 | // HOB list is at bottom of stack area\r |
113 | // Stack grows from top-to-bottom towards HOB list\r |
114 | HobBase = (VOID *)StackBase;\r |
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115 | CreateHobList (MemoryBase, MemorySize, HobBase, StackBase);\r |
116 | \r |
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117 | // Turn off remapping NOR to 0. We can will now see DRAM in low memory\r |
118 | MmioOr32 (0x10001000 ,BIT8); //EB_SP810_CTRL_BASE\r |
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119 | \r |
120 | // Enable program flow prediction, if supported.\r |
121 | ArmEnableBranchPrediction ();\r |
122 | \r |
123 | // Initialize CPU cache\r |
124 | InitCache ((UINT32)MemoryBase, (UINT32)MemorySize);\r |
125 | \r |
126 | // Add memory allocation hob for relocated FD\r |
127 | BuildMemoryAllocationHob (FixedPcdGet32(PcdEmbeddedFdBaseAddress), FixedPcdGet32(PcdEmbeddedFdSize), EfiBootServicesData);\r |
128 | \r |
129 | // Add the FVs to the hob list\r |
130 | BuildFvHob (PcdGet32(PcdFlashFvMainBase), PcdGet32(PcdFlashFvMainSize));\r |
131 | \r |
132 | // Start talking\r |
133 | UartInit ();\r |
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134 | \r |
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135 | InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, NULL, NULL);\r |
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136 | SaveAndSetDebugTimerInterrupt (TRUE);\r |
137 | \r |
138 | DEBUG ((EFI_D_ERROR, "UART Enabled\n"));\r |
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139 | \r |
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140 | // Start up a free running timer so that the timer lib will work\r |
141 | TimerInit ();\r |
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142 | \r |
143 | // SEC phase needs to run library constructors by hand.\r |
144 | ExtractGuidedSectionLibConstructor ();\r |
145 | LzmaDecompressLibConstructor ();\r |
146 | \r |
147 | // Build HOBs to pass up our version of stuff the DXE Core needs to save space\r |
148 | BuildPeCoffLoaderHob ();\r |
149 | BuildExtractSectionHob (\r |
150 | &gLzmaCustomDecompressGuid,\r |
151 | LzmaGuidedSectionGetInfo,\r |
152 | LzmaGuidedSectionExtraction\r |
153 | );\r |
154 | \r |
155 | // Assume the FV that contains the SEC (our code) also contains a compressed FV.\r |
156 | DecompressFirstFv ();\r |
157 | \r |
158 | // Load the DXE Core and transfer control to it\r |
159 | LoadDxeCoreFromFv (NULL, 0);\r |
160 | \r |
161 | // DXE Core should always load and never return\r |
162 | ASSERT (FALSE);\r |
163 | }\r |
164 | \r |