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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
*----------------------------------------------------------------------------
* MODULES USED
*
*----------------------------------------------------------------------------
*/
#undef FILECODE
#define FILECODE 0xCCCC
#include "comlib.h"
#include "AsPsDefs.h"
#include "AsPsNb.h"
/*----------------------------------------------------------------------------
* PROTOTYPES OF LOCAL FUNCTIONS
*
*----------------------------------------------------------------------------
*/
u8 getNumOfNodeNb(void);
u8 translateNodeIdToDeviceIdNb(u8 nodeId);
/*----------------------------------------------------------------------------
* FUNCTION: getMinNbCOF
* INPUT: None
* OUTPUT: minNbCOF (in multiple of half of CLKIN, 100MHz)
* DESCRIPTION:
* This function returns the minimum possible NbCOF (in 100MHz)
* for the system .
* This function can be run on any core and is used by the HT & Memory init code
* in Phase 1.
* ----------------------------------------------------------------------------
*/
u8 getMinNbCOF(void)
{
u8 numOfNode, i, j, deviceId, nbDid, nbFid, nextNbFid;
u32 dtemp;
nbDid = 0;
nbFid = 0;
/* get number of node in the system */
numOfNode = getNumOfNodeNb();
/* go through each node for the minimum NbCOF (in multiple of CLKIN/2) */
for(i=0; i < numOfNode; i++)
{
/* stub function for APIC ID virtualization for large MP system later */
deviceId = translateNodeIdToDeviceIdNb(i);
/* read all P-state spec registers for NbDid=1 */
for(j=0; j < 5; j++)
{
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_4,PS_SPEC_REG+(j*PCI_REG_LEN)), &dtemp); /*F4x1E0 + j*4 */
/* get NbDid */
if(dtemp & NB_DID_MASK)
nbDid = 1;
}
/* if F3x1FC[NbCofVidUpdate]=0, NbFid = default value */
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_3,PRCT_INFO), &dtemp); /*F3x1FC*/
if(!(dtemp & NB_CV_UPDATE)) /* F3x1FC[NbCofVidUpdated]=0, use default VID */
{
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_3,CPTC0), &dtemp); /*F3xD4*/
nextNbFid = (u8) (dtemp & BIT_MASK_5);
if(nbDid)
nextNbFid = (u8) (nextNbFid >> 1);
}
else
{
/* check PVI/SPI */
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_3,PW_CTL_MISC), &dtemp); /*F3xA0*/
if(dtemp & PVI_MODE) /* PVI */
{
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_3,PRCT_INFO), &dtemp); /*F3x1FC*/
nextNbFid = (u8) (dtemp >> UNI_NB_FID_BIT);
nextNbFid &= BIT_MASK_5;
/* if(nbDid)
nextNbFid = nextNbFid >> 1; */
}
else /* SVI */
{
AmdPCIRead(MAKE_SBDFO(0,0,deviceId,FN_3,PRCT_INFO), &dtemp); /*F3x1FC*/
nextNbFid = (u8) ((dtemp >> UNI_NB_FID_BIT) & BIT_MASK_5);
nextNbFid = (u8) (nextNbFid + ((dtemp >> SPLT_NB_FID_OFFSET) & BIT_MASK_3));
/* if(nbDid)
nextNbFid = nextNbFid >> 1; */
}
}
if( i == 0)
nbFid = nextNbFid;
else if( nbFid > nextNbFid )
nbFid = nextNbFid;
}
/* add the base and convert to 100MHz divide by 2 if DID=1 */
if(nbDid)
nbFid = (u8) (nbFid + 4);
else
nbFid = (u8) ((nbFid + 4) << 1);
return nbFid;
}
u8 getNumOfNodeNb(void)
{
u32 dtemp;
AmdPCIRead(MAKE_SBDFO(0,0,24,0,0x60), &dtemp);
dtemp = (dtemp >> 4) & BIT_MASK_3;
dtemp++;
return (u8)dtemp;
}
/*----------------------------------------------------------------------------
* FUNCTION: translateNodeIdToDeviceId
* INPUT: u8 nodeId - node ID of the node
* OUTPUT: u8 - PCI device ID of the node
* DESCRIPTION:
* This function return the PCI device ID for PCI access using node ID.
* This function may need to chnage node ID to device ID in big MP systems.
* ----------------------------------------------------------------------------
*/
u8 translateNodeIdToDeviceIdNb(u8 nodeId)
{
return (u8) (nodeId+PCI_DEV_BASE);
}
|
