1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/** @file
*
* Copyright (c) 2011-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#include <PiPei.h>
#include <Pi/PiBootMode.h>
#include <Library/PeCoffLib.h>
#include <Library/PrePiLib.h>
#include <Library/PrintLib.h>
#include <Library/PrePiHobListPointerLib.h>
#include <Library/TimerLib.h>
#include <Library/PerformanceLib.h>
#include <Library/CacheMaintenanceLib.h>
#include <Ppi/GuidedSectionExtraction.h>
#include <Ppi/ArmMpCoreInfo.h>
#include "PrePi.h"
VOID
EFIAPI
ProcessLibraryConstructorList (
VOID
);
VOID
PrePiMain (
IN UINTN UefiMemoryBase,
IN UINTN StacksBase,
IN UINT64 StartTimeStamp
)
{
EFI_HOB_HANDOFF_INFO_TABLE *HobList;
EFI_STATUS Status;
CHAR8 Buffer[100];
UINTN CharCount;
UINTN StacksSize;
// Initialize the architecture specific bits
ArchInitialize ();
// Declare the PI/UEFI memory region
HobList = HobConstructor (
(VOID *)UefiMemoryBase,
FixedPcdGet32 (PcdSystemMemoryUefiRegionSize),
(VOID *)UefiMemoryBase,
(VOID *)StacksBase // The top of the UEFI Memory is reserved for the stacks
);
PrePeiSetHobList (HobList);
//
// Ensure that the loaded image is invalidated in the caches, so that any
// modifications we made with the caches and MMU off (such as the applied
// relocations) don't become invisible once we turn them on.
//
InvalidateDataCacheRange ((VOID *)(UINTN)PcdGet64 (PcdFdBaseAddress), PcdGet32 (PcdFdSize));
// SEC phase needs to run library constructors by hand.
ProcessLibraryConstructorList ();
// Initialize MMU and Memory HOBs (Resource Descriptor HOBs)
Status = MemoryPeim (UefiMemoryBase, FixedPcdGet32 (PcdSystemMemoryUefiRegionSize));
ASSERT_EFI_ERROR (Status);
// Initialize the Serial Port
SerialPortInitialize ();
CharCount = AsciiSPrint (
Buffer,
sizeof (Buffer),
"UEFI firmware (version %s built at %a on %a)\n\r",
(CHAR16 *)PcdGetPtr (PcdFirmwareVersionString),
__TIME__,
__DATE__
);
SerialPortWrite ((UINT8 *)Buffer, CharCount);
// Create the Stacks HOB (reserve the memory for all stacks)
StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize);
BuildStackHob (StacksBase, StacksSize);
// TODO: Call CpuPei as a library
BuildCpuHob (ArmGetPhysicalAddressBits (), PcdGet8 (PcdPrePiCpuIoSize));
// Set the Boot Mode
SetBootMode (BOOT_WITH_FULL_CONFIGURATION);
// Initialize Platform HOBs (CpuHob and FvHob)
Status = PlatformPeim ();
ASSERT_EFI_ERROR (Status);
// Now, the HOB List has been initialized, we can register performance information
PERF_START (NULL, "PEI", NULL, StartTimeStamp);
// Assume the FV that contains the SEC (our code) also contains a compressed FV.
Status = DecompressFirstFv ();
ASSERT_EFI_ERROR (Status);
// Load the DXE Core and transfer control to it
Status = LoadDxeCoreFromFv (NULL, SIZE_128KB);
ASSERT_EFI_ERROR (Status);
}
VOID
CEntryPoint (
IN UINTN MpId,
IN UINTN UefiMemoryBase,
IN UINTN StacksBase
)
{
UINT64 StartTimeStamp;
if (PerformanceMeasurementEnabled ()) {
// Initialize the Timer Library to setup the Timer HW controller
TimerConstructor ();
// We cannot call yet the PerformanceLib because the HOB List has not been initialized
StartTimeStamp = GetPerformanceCounter ();
} else {
StartTimeStamp = 0;
}
// Data Cache enabled on Primary core when MMU is enabled.
ArmDisableDataCache ();
// Invalidate instruction cache
ArmInvalidateInstructionCache ();
// Enable Instruction Caches on all cores.
ArmEnableInstructionCache ();
PrePiMain (UefiMemoryBase, StacksBase, StartTimeStamp);
// DXE Core should always load and never return
ASSERT (FALSE);
}
VOID
RelocatePeCoffImage (
IN EFI_PEI_FV_HANDLE FwVolHeader,
IN PE_COFF_LOADER_READ_FILE ImageRead
)
{
EFI_PEI_FILE_HANDLE FileHandle;
VOID *SectionData;
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
EFI_STATUS Status;
FileHandle = NULL;
Status = FfsFindNextFile (
EFI_FV_FILETYPE_SECURITY_CORE,
FwVolHeader,
&FileHandle
);
ASSERT_EFI_ERROR (Status);
Status = FfsFindSectionData (EFI_SECTION_PE32, FileHandle, &SectionData);
if (EFI_ERROR (Status)) {
Status = FfsFindSectionData (EFI_SECTION_TE, FileHandle, &SectionData);
}
ASSERT_EFI_ERROR (Status);
ZeroMem (&ImageContext, sizeof ImageContext);
ImageContext.Handle = (EFI_HANDLE)SectionData;
ImageContext.ImageRead = ImageRead;
PeCoffLoaderGetImageInfo (&ImageContext);
if (ImageContext.ImageAddress != (UINTN)SectionData) {
ImageContext.ImageAddress = (UINTN)SectionData;
PeCoffLoaderRelocateImage (&ImageContext);
}
}
|
