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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*++
Copyright (c) 2004 - 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
RtMemoryStatusCode.c
Abstract:
EFI lib to provide memory journal status code reporting routines.
--*/
#include "RtMemoryStatusCode.h"
//
// Global variables
//
PEI_STATUS_CODE_MEMORY_PPI mStatusCodeMemoryPpi = { 0, 0, 0, 0 };
//
// Function implementations
//
EFI_STATUS
EFIAPI
RtMemoryReportStatusCode (
IN EFI_STATUS_CODE_TYPE CodeType,
IN EFI_STATUS_CODE_VALUE Value,
IN UINT32 Instance,
IN EFI_GUID * CallerId,
IN EFI_STATUS_CODE_DATA * Data OPTIONAL
)
/*++
Routine Description:
Log a status code to a memory journal. If no memory journal exists,
we will just return.
Arguments:
Same as ReportStatusCode AP
Returns:
EFI_SUCCESS This function always returns success
--*/
{
EFI_STATUS_CODE_ENTRY *CurrentEntry;
UINTN MaxEntry;
//
// We don't care to log debug codes.
//
if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) == EFI_DEBUG_CODE) {
return EFI_SUCCESS;
}
//
// Update the latest entry in the journal.
//
MaxEntry = mStatusCodeMemoryPpi.Length / sizeof (EFI_STATUS_CODE_ENTRY);
if (!MaxEntry) {
//
// If we don't have any entries, then we can return.
// This effectively means that no memory buffer was passed forward from PEI.
//
return EFI_SUCCESS;
}
CurrentEntry = (EFI_STATUS_CODE_ENTRY *) (UINTN) (mStatusCodeMemoryPpi.Address + (mStatusCodeMemoryPpi.LastEntry * sizeof (EFI_STATUS_CODE_ENTRY)));
mStatusCodeMemoryPpi.LastEntry = (mStatusCodeMemoryPpi.LastEntry + 1) % MaxEntry;
if (mStatusCodeMemoryPpi.LastEntry == mStatusCodeMemoryPpi.FirstEntry) {
mStatusCodeMemoryPpi.FirstEntry = (mStatusCodeMemoryPpi.FirstEntry + 1) % MaxEntry;
}
CurrentEntry->Type = CodeType;
CurrentEntry->Value = Value;
CurrentEntry->Instance = Instance;
return EFI_SUCCESS;
}
VOID
EFIAPI
RtMemoryInitializeStatusCode (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Initialization routine.
Allocates heap space for storing Status Codes.
Installs a PPI to point to that heap space.
Installs a callback to switch to memory.
Installs a callback to
Arguments:
(Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
Returns:
None
--*/
{
EFI_STATUS Status;
VOID *HobList;
PEI_STATUS_CODE_MEMORY_PPI **StatusCodeMemoryPpi;
//
// Locate the HOB that contains the PPI structure for the memory journal
// We don't check for more than one.
//
EfiLibGetSystemConfigurationTable (
&gEfiHobListGuid,
&HobList
);
Status = GetNextGuidHob (
&HobList,
&gPeiStatusCodeMemoryPpiGuid,
(VOID **) &StatusCodeMemoryPpi,
NULL
);
if (EFI_ERROR (Status)) {
return ;
}
//
// Copy data to our structure since the HOB will go away at runtime
//
// BUGBUG: Virtualize for RT
//
mStatusCodeMemoryPpi.FirstEntry = (*StatusCodeMemoryPpi)->FirstEntry;
mStatusCodeMemoryPpi.LastEntry = (*StatusCodeMemoryPpi)->LastEntry;
mStatusCodeMemoryPpi.Address = (*StatusCodeMemoryPpi)->Address;
mStatusCodeMemoryPpi.Length = (*StatusCodeMemoryPpi)->Length;
}
VOID
EFIAPI
PlaybackStatusCodes (
IN EFI_REPORT_STATUS_CODE ReportStatusCode
)
/*++
Routine Description:
Call the input ReportStatusCode function with every status code recorded in
the journal.
Arguments:
ReportStatusCode ReportStatusCode function to call.
Returns:
None
--*/
{
UINTN MaxEntry;
EFI_STATUS_CODE_ENTRY *CurrentEntry;
UINTN Counter;
if (ReportStatusCode == RtMemoryReportStatusCode) {
return ;
}
//
// Playback prior status codes to current listeners
//
MaxEntry = mStatusCodeMemoryPpi.Length / sizeof (EFI_STATUS_CODE_ENTRY);
for (Counter = mStatusCodeMemoryPpi.FirstEntry; Counter != mStatusCodeMemoryPpi.LastEntry; Counter++) {
//
// Check if we have to roll back to beginning of queue buffer
//
if (Counter == MaxEntry) {
Counter = 0;
}
//
// Play current entry
//
CurrentEntry = (EFI_STATUS_CODE_ENTRY *) (UINTN) (mStatusCodeMemoryPpi.Address + (Counter * sizeof (EFI_STATUS_CODE_ENTRY)));
ReportStatusCode (
CurrentEntry->Type,
CurrentEntry->Value,
CurrentEntry->Instance,
NULL,
NULL
);
}
}
|
