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
|
/*++
This file contains an 'Intel Peripheral Driver' and uniquely
identified as "Intel Reference Module" and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
--*/
/*++
Copyright (c) 2008 - 2010 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
Module Name:
HeciSmm.c
Abstract:
SMM HECI driver
--*/
//
// External include files do NOT need to be explicitly specified in real EDKII
// environment
//
#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000)
#include "HeciHpet.h"
#include "HeciCore.h"
#endif // EDK_RELEASE_VERSION
//
// Global driver data
//
EFI_SMM_BASE_PROTOCOL *mSmmBase;
HECI_INSTANCE_SMM *mHeciContext;
UINT32
CheckAndFixHeciForAccess (
VOID
)
/*++
Routine Description:
This function provides a standard way to verify the HECI cmd and MBAR regs
in its PCI cfg space are setup properly and that the local mHeciContext
variable matches this info.
Arguments:
None.
Returns:
VOID
--*/
{
UINTN HeciPciAddressBase;
HeciPciAddressBase = mHeciContext->PciAddressBase;
//
// Read HECI_MBAR in case it has changed
//
mHeciContext->HeciMBAR = PciRead32 (HeciPciAddressBase + R_HECIMBAR) & 0xFFFFFFF0;
//
// Check if HECI_MBAR is disabled
//
if ((
PciRead8 (HeciPciAddressBase + PCI_COMMAND_OFFSET) & (EFI_PCI_COMMAND_MEMORY_SPACE | EFI_PCI_COMMAND_BUS_MASTER)
) != (EFI_PCI_COMMAND_MEMORY_SPACE | EFI_PCI_COMMAND_BUS_MASTER)
) {
//
// If cmd reg in pci cfg space is not turned on turn it on.
//
PciOr8 (
HeciPciAddressBase + PCI_COMMAND_OFFSET,
EFI_PCI_COMMAND_MEMORY_SPACE | EFI_PCI_COMMAND_BUS_MASTER
);
}
return mHeciContext->HeciMBAR;
}
VOID
EnableHpet (
VOID
)
/*++
Routine Description:
Enable Hpet function.
Arguments:
None.
Returns:
None.
--*/
{
VOLATILE UINT32 *HpetConfigReg;
HpetConfigReg = NULL;
//
// Get the High Precision Event Timer base address and enable the memory range
//
HpetConfigReg = (UINT32 *) (UINTN) (PCH_RCRB_BASE + R_PCH_RCRB_HPTC);
switch (*HpetConfigReg & B_PCH_RCRB_HPTC_AS) {
case 0:
mHeciContext->HpetTimer = (VOID *) (UINTN) (HPET_ADDRESS_0);
break;
case 1:
mHeciContext->HpetTimer = (VOID *) (UINTN) (HPET_ADDRESS_1);
break;
case 2:
mHeciContext->HpetTimer = (VOID *) (UINTN) (HPET_ADDRESS_2);
break;
case 3:
mHeciContext->HpetTimer = (VOID *) (UINTN) (HPET_ADDRESS_3);
break;
default:
mHeciContext->HpetTimer = NULL;
break;
}
//
// Read this back to force the write-back.
//
*HpetConfigReg = *HpetConfigReg | B_PCH_RCRB_HPTC_AE;
//
// Start the timer so it is up and running
//
mHeciContext->HpetTimer[HPET_GEN_CONFIG_LOW] = HPET_START;
mHeciContext->HpetTimer[HPET_GEN_CONFIG_LOW] = HPET_START;
return ;
}
EFI_STATUS
InitializeHECI (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
HECI driver entry point used to initialize support for the HECI device.
Arguments:
ImageHandle - Standard entry point parameter.
SystemTable - Standard entry point parameter.
Returns:
EFI_STATUS
--*/
{
EFI_STATUS Status;
Status = gBS->LocateProtocol (&gEfiSmmBaseProtocolGuid, NULL, &mSmmBase);
ASSERT_EFI_ERROR (Status);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Create database record and add to database
//
Status = mSmmBase->SmmAllocatePool (
mSmmBase,
EfiRuntimeServicesData,
sizeof (HECI_INSTANCE_SMM),
&mHeciContext
);
ASSERT_EFI_ERROR (Status);
if (EFI_ERROR (Status)) {
return Status;
}
mHeciContext->Handle = ImageHandle;
//
// Initialize HECI protocol pointers
//
mHeciContext->HeciCtlr.ResetHeci = ResetHeciInterface;
mHeciContext->HeciCtlr.SendwACK = HeciSendwACK;
mHeciContext->HeciCtlr.ReadMsg = HeciReceive;
mHeciContext->HeciCtlr.SendMsg = HeciSend;
mHeciContext->HeciCtlr.InitHeci = HeciInitialize;
mHeciContext->HeciCtlr.ReInitHeci = HeciReInitialize;
mHeciContext->HeciCtlr.MeResetWait = MeResetWait;
mHeciContext->HeciCtlr.GetMeStatus = HeciGetMeStatus;
mHeciContext->HeciCtlr.GetMeMode = HeciGetMeMode;
//
// Initialize the HECI device
//
Status = InitializeHeciPrivate ();
if (EFI_ERROR (Status)) {
return EFI_SUCCESS;
}
//
// Install the HECI interface
//
Status = gBS->InstallMultipleProtocolInterfaces (
&mHeciContext->Handle,
&gSmmHeciProtocolGuid,
&mHeciContext->HeciCtlr,
NULL
);
if (EFI_ERROR (Status)) {
return EFI_SUCCESS;
}
return EFI_SUCCESS;
}
|
