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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Lubomir Rintel <lkundrak@v3.sk>
*
* 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <arch/ioapic.h>
Name (_HID, EisaId ("PNP0A03"))
Name (_UID, 1)
Name (_ADR, 0x00000000)
Name (_BBN, 0)
/* The DRAM controller */
Device (MEMC)
{
Name (_ADR, 0x00000003)
OperationRegion (MEMB, PCI_Config, 0x00, 0xEF)
Field (MEMB, DWordAcc, NoLock, Preserve) {
/* DRAM Rank Ending Address */
Offset (0x40),
R0EA, 8, /* Rank 0 Ending Address */
R1EA, 8, /* Rank 1 Ending Address */
R2EA, 8, /* Rank 2 Ending Address */
R3EA, 8, /* Rank 3 Ending Address */
}
/* Find the top of DRAM */
Method (TOLM, 0) {
/* Find the last occupied rank's end. */
Store (R3EA, Local0)
If (LEqual (Local0, Zero)) {
Store (R2EA, Local0)
}
If (LEqual (Local0, Zero)) {
Store (R1EA, Local0)
}
If (LEqual (Local0, Zero)) {
Store (R0EA, Local0)
}
/* The granularity is 64M */
ShiftLeft (Local0, 26, Local0)
Return (Local0)
}
}
Name (XCRS, ResourceTemplate () {
/* All PCI busses */
WordBusNumber (ResourceConsumer, MinNotFixed, MaxNotFixed, PosDecode,
0x0000, 0x0000, 0x00ff, 0x0000, 0x0100,,,)
/* IO-space, sans the PCI regs. */
WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8,
,,, TypeStatic)
WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x0D00, 0xFFFF, 0x0000, 0xF300,
,,, TypeStatic)
/* The space from top of DRAM to IOAPIC */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite,
/* This is a template that gets filled in _CRS() */
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,,,
MEM0, AddressRangeMemory, TypeStatic)
})
Method (_CRS, 0) {
/* MEM0 is from the top of RAM to IOAPIC */
CreateDWordField (XCRS, \_SB.PCI0.MEM0._MIN, MEML)
CreateDWordField (XCRS, \_SB.PCI0.MEM0._MAX, MEMH)
CreateDWordField (XCRS, \_SB.PCI0.MEM0._LEN, LENM)
Store (\_SB.PCI0.MEMC.TOLM, MEML)
Subtract (IO_APIC_ADDR, 1, MEMH)
Subtract (IO_APIC_ADDR, MEML, LENM)
Return (XCRS);
}
|
