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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*++
Copyright (c) 1999 - 2014, 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 that 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.
--*/
//
// Include files
//
#include <PiDxe.h>
#include <IndustryStandard/Acpi50.h>
//
// LPIT Definitions
//
#define EFI_ACPI_LOW_POWER_IDLE_TABLE_REVISION 0x1
//
// Ensure proper structure formats
//
#pragma pack(1)
typedef union _EFI_ACPI_LPI_STATE_FLAGS {
struct {
UINT32 Disabled :1;
UINT32 CounterUnavailable :1;
UINT32 Reserved :30;
};
UINT32 AsUlong;
} EFI_ACPI_LPI_STATE_FLAGS, *PEFI_ACPI_LPI_STATE_FLAGS;
// Only Mwait LPI here:
typedef struct _EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR {
UINT32 Type; // offset: 0
UINT32 Length; // offset: 4
UINT16 UniqueId; // offset: 8
UINT8 Reserved[2]; // offset: 9
EFI_ACPI_LPI_STATE_FLAGS Flags; // offset: 12
EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE EntryTrigger; // offset: 16
UINT32 Residency; // offset: 28
UINT32 Latency; // offset: 32
EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE ResidencyCounter; // offset: 36
UINT64 ResidencyCounterFrequency; //offset: 48
} EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR;
//
// Defines for LPIT table, some are VLV specific
//
// signature "LPIT"
#define EFI_ACPI_LOW_POWER_IDLE_TABLE_SIGNATURE 0x5449504c
#define EFI_ACPI_OEM_LPIT_REVISION 0x00000000
#define EFI_ACPI_LOW_POWER_IDLE_MWAIT_TYPE 0x0
#define EFI_ACPI_LOW_POWER_IDLE_DEFAULT_FLAG 0x0
#define EFI_ACPI_LOW_POWER_IDLE_RES_FREQ_8K 0x8000 // 32768
//
// LPI state count (4 on VLV: S0ir, S0i1, S0i2, S0i3)
//
#define EFI_ACPI_VLV_LPI_STATE_COUNT 0x4
//
// LPI TRIGGER (HW C7 on VLV),
// TOFIX!!!
//
#define EFI_ACPI_VLV_LPI_TRIGGER {0x7F,0x1,0x2,0x0,0x64}
//
// LPI residency counter (MMIO)
//
#define EFI_ACPI_VLV_LPI_RES_COUNTER0 {0x0,32,0x0,0x03,0xFED03080}
#define EFI_ACPI_VLV_LPI_RES_COUNTER1 {0x0,32,0x0,0x03,0xFED03084}
#define EFI_ACPI_VLV_LPI_RES_COUNTER2 {0x0,32,0x0,0x03,0xFED03088}
#define EFI_ACPI_VLV_LPI_RES_COUNTER3 {0x0,32,0x0,0x03,0xFED0308C}
//
// LPI break-even residency in us - all match S0i3 residency
// Residency estimate: Latency x 3
//
#define EFI_ACPI_VLV_LPI_MIN_RES0 15000
#define EFI_ACPI_VLV_LPI_MIN_RES1 15000
#define EFI_ACPI_VLV_LPI_MIN_RES2 15000
#define EFI_ACPI_VLV_LPI_MIN_RES3 15000
//
// LPI latency in us - all match S0i3 latency
//
#define EFI_ACPI_VLV_LPI_LATENCY0 5000
#define EFI_ACPI_VLV_LPI_LATENCY1 5000
#define EFI_ACPI_VLV_LPI_LATENCY2 5000
#define EFI_ACPI_VLV_LPI_LATENCY3 5000
//
// LPI ID
//
#define EFI_ACPI_VLV_LPI_UNIQUE_ID0 0
#define EFI_ACPI_VLV_LPI_UNIQUE_ID1 1
#define EFI_ACPI_VLV_LPI_UNIQUE_ID2 2
#define EFI_ACPI_VLV_LPI_UNIQUE_ID3 3
//
// LPI ACPI table header
//
typedef struct _EFI_ACPI_LOW_POWER_IDLE_TABLE {
EFI_ACPI_DESCRIPTION_HEADER Header;
EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR LpiStates[EFI_ACPI_VLV_LPI_STATE_COUNT];
} EFI_ACPI_LOW_POWER_IDLE_TABLE;
#pragma pack()
EFI_ACPI_LOW_POWER_IDLE_TABLE Lpit = {
//
// Header
//
EFI_ACPI_LOW_POWER_IDLE_TABLE_SIGNATURE,
sizeof (EFI_ACPI_LOW_POWER_IDLE_TABLE),
EFI_ACPI_LOW_POWER_IDLE_TABLE_REVISION ,
//
// Checksum will be updated at runtime
//
0x00,
//
// It is expected that these values will be updated at runtime
//
' ', ' ', ' ', ' ', ' ', ' ',
0,
EFI_ACPI_OEM_LPIT_REVISION,
0,
0,
//
// Descriptor
//
{
{
EFI_ACPI_LOW_POWER_IDLE_MWAIT_TYPE,
sizeof(EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR),
EFI_ACPI_VLV_LPI_UNIQUE_ID0,
{0,0},
{EFI_ACPI_LOW_POWER_IDLE_DEFAULT_FLAG}, // Flags
EFI_ACPI_VLV_LPI_TRIGGER, //EntryTrigger
EFI_ACPI_VLV_LPI_MIN_RES0, //Residency
EFI_ACPI_VLV_LPI_LATENCY0, //Latency
EFI_ACPI_VLV_LPI_RES_COUNTER0, //ResidencyCounter
EFI_ACPI_LOW_POWER_IDLE_RES_FREQ_8K //Residency counter frequency
},
{
EFI_ACPI_LOW_POWER_IDLE_MWAIT_TYPE,
sizeof(EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR),
EFI_ACPI_VLV_LPI_UNIQUE_ID1,
{0,0},
{EFI_ACPI_LOW_POWER_IDLE_DEFAULT_FLAG}, // Flags
EFI_ACPI_VLV_LPI_TRIGGER, //EntryTrigger
EFI_ACPI_VLV_LPI_MIN_RES1, //Residency
EFI_ACPI_VLV_LPI_LATENCY1, //Latency
EFI_ACPI_VLV_LPI_RES_COUNTER1, //ResidencyCounter
EFI_ACPI_LOW_POWER_IDLE_RES_FREQ_8K //Residency counter frequency
},
{
EFI_ACPI_LOW_POWER_IDLE_MWAIT_TYPE,
sizeof(EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR),
EFI_ACPI_VLV_LPI_UNIQUE_ID2,
{0,0},
{EFI_ACPI_LOW_POWER_IDLE_DEFAULT_FLAG}, // Flags
EFI_ACPI_VLV_LPI_TRIGGER, //EntryTrigger
EFI_ACPI_VLV_LPI_MIN_RES2, //Residency
EFI_ACPI_VLV_LPI_LATENCY2, //Latency
EFI_ACPI_VLV_LPI_RES_COUNTER2, //ResidencyCounter
EFI_ACPI_LOW_POWER_IDLE_RES_FREQ_8K //Residency counter frequency
},
{
EFI_ACPI_LOW_POWER_IDLE_MWAIT_TYPE,
sizeof(EFI_ACPI_MWAIT_LPI_STATE_DESCRIPTOR),
EFI_ACPI_VLV_LPI_UNIQUE_ID3,
{0,0},
{EFI_ACPI_LOW_POWER_IDLE_DEFAULT_FLAG}, // Flags
EFI_ACPI_VLV_LPI_TRIGGER, //EntryTrigger
EFI_ACPI_VLV_LPI_MIN_RES3, //Residency
EFI_ACPI_VLV_LPI_LATENCY3, //Latency
EFI_ACPI_VLV_LPI_RES_COUNTER3, //ResidencyCounter
EFI_ACPI_LOW_POWER_IDLE_RES_FREQ_8K //Residency counter frequency
}
}
};
VOID*
ReferenceAcpiTable (
VOID
)
{
//
// Reference the table being generated to prevent the optimizer from
// removing the data structure from the executable
//
return (VOID*)&Lpit;
}
|
