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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <cpu/x86/mtrr.h>
#include <cpu/amd/msr.h>
#include <cpu/amd/mtrr.h>
#include <northbridge/amd/agesa/agesa_helper.h>
#include <AGESA.h>
#include <amdlib.h>
void amd_initcpuio(void)
{
UINT64 MsrReg;
UINT32 PciData;
PCI_ADDR PciAddress;
AMD_CONFIG_PARAMS StdHeader;
/* Enable legacy video routing: D18F1xF4 VGA Enable */
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xF4);
PciData = 1;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* The platform BIOS needs to ensure the memory ranges of SB800 legacy
* devices (TPM, HPET, BIOS RAM, Watchdog Timer, I/O APIC and ACPI) are
* set to non-posted regions.
*/
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x84);
PciData = 0x00FEDF00; // last address before processor local APIC at FEE00000
PciData |= 1 << 7; // set NP (non-posted) bit
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x80);
PciData = (0xFED00000 >> 8) | 3; // lowest NP address is HPET at FED00000
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Map the remaining PCI hole as posted MMIO */
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x8C);
PciData = 0x00FECF00; // last address before non-posted range
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
LibAmdMsrRead(TOP_MEM, &MsrReg, &StdHeader);
MsrReg = (MsrReg >> 8) | 3;
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0x88);
PciData = (UINT32) MsrReg;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
/* Send all IO (0000-FFFF) to southbridge. */
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC4);
PciData = 0x0000F000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
PciAddress.AddressValue = MAKE_SBDFO(0, 0, 0x18, 1, 0xC0);
PciData = 0x00000003;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
}
void amd_initenv(void)
{
AMD_INTERFACE_PARAMS AmdParamStruct;
PCI_ADDR PciAddress;
UINT32 PciValue;
/* Initialize Subordinate Bus Number and Secondary Bus Number
* In platform BIOS this address is allocated by PCI enumeration code
Modify D1F0x18
*/
PciAddress.Address.Bus = 0;
PciAddress.Address.Device = 1;
PciAddress.Address.Function = 0;
PciAddress.Address.Register = 0x18;
/* Write to D1F0x18 */
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x00010100;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize GMM Base Address for Legacy Bridge Mode
* Modify B1D5F0x18
*/
PciAddress.Address.Bus = 1;
PciAddress.Address.Device = 5;
PciAddress.Address.Function = 0;
PciAddress.Address.Register = 0x18;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x96000000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize FB Base Address for Legacy Bridge Mode
* Modify B1D5F0x10
*/
PciAddress.Address.Register = 0x10;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x80000000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize GMM Base Address for PCIe Mode
* Modify B0D1F0x18
*/
PciAddress.Address.Bus = 0;
PciAddress.Address.Device = 1;
PciAddress.Address.Function = 0;
PciAddress.Address.Register = 0x18;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x96000000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize FB Base Address for PCIe Mode
* Modify B0D1F0x10
*/
PciAddress.Address.Register = 0x10;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x80000000;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize MMIO Base and Limit Address
* Modify B0D1F0x20
*/
PciAddress.Address.Bus = 0;
PciAddress.Address.Device = 1;
PciAddress.Address.Function = 0;
PciAddress.Address.Register = 0x20;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x96009600;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
/* Initialize MMIO Prefetchable Memory Limit and Base
* Modify B0D1F0x24
*/
PciAddress.Address.Register = 0x24;
LibAmdPciRead(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
PciValue |= 0x8FF18001;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciValue, &AmdParamStruct.StdHeader);
}
|
