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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <soc/iomap.h>
Name (_HID, EisaId ("PNP0A08") /* PCI Express Bus */) // _HID: Hardware ID
Name (_CID, EisaId ("PNP0A03") /* PCI Bus */) // _CID: Compatible ID
Name (_SEG, Zero) // _SEG: PCI Segment
Name (_UID, Zero) // _UID: Unique ID
Device (MCHC)
{
Name (_ADR, 0x00000000)
OperationRegion (MCHP, PCI_Config, 0x00, 0x100)
Field (MCHP, DWordAcc, NoLock, Preserve)
{
Offset(0x40), /* EPBAR (0:0:0:40) */
EPEN, 1, /* Enable */
, 11,
EPBR, 27, /* EPBAR [38:12] */
Offset(0x48), /* MCHBAR (0:0:0:48) */
MHEN, 1, /* Enable */
, 14,
MHBR, 24, /* MCHBAR [38:15] */
Offset(0x60), /* PCIEXBAR (0:0:0:60) */
PXEN, 1, /* Enable */
PXSZ, 2, /* PCI Express Size */
, 23,
PXBR, 13, /* PCI Express BAR [38:26] */
Offset(0x68), /* DMIBAR (0:0:0:68) */
DIEN, 1, /* Enable */
, 11,
DIBR, 27, /* DMIBAR [38:12] */
Offset (0x70), /* ME Base Address */
MEBA, 64,
Offset (0xa0),
TOM, 64, /* Top of Used Memory */
TUUD, 64, /* Top of Upper Used Memory */
Offset (0xbc), /* Top of Low Used Memory */
TLUD, 32,
}
}
Method (_CRS, 0, Serialized)
{
Name (MCRS, ResourceTemplate ()
{
/* Bus Numbers */
WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
0x0000, 0x0000, 0x00ff, 0x0000, 0x0100)
/* IO Region 0 */
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode,
EntireRange,
0x0000, 0x0000, 0x0cf7, 0x0000, 0x0cf8)
/* PCI Config Space */
Io (Decode16, 0x0cf8, 0x0cf8, 0x0001, 0x0008)
/* IO Region 1 */
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode,
EntireRange,
0x0000, 0x0d00, 0xffff, 0x0000, 0xf300)
/* VGA memory (0xa0000-0xbffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000a0000, 0x000bffff, 0x00000000,
0x00020000)
/* OPROM reserved (0xc0000-0xc3fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c0000, 0x000c3fff, 0x00000000,
0x00004000)
/* OPROM reserved (0xc4000-0xc7fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c4000, 0x000c7fff, 0x00000000,
0x00004000)
/* OPROM reserved (0xc8000-0xcbfff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c8000, 0x000cbfff, 0x00000000,
0x00004000)
/* OPROM reserved (0xcc000-0xcffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000cc000, 0x000cffff, 0x00000000,
0x00004000)
/* OPROM reserved (0xd0000-0xd3fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d0000, 0x000d3fff, 0x00000000,
0x00004000)
/* OPROM reserved (0xd4000-0xd7fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d4000, 0x000d7fff, 0x00000000,
0x00004000)
/* OPROM reserved (0xd8000-0xdbfff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d8000, 0x000dbfff, 0x00000000,
0x00004000)
/* OPROM reserved (0xdc000-0xdffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000dc000, 0x000dffff, 0x00000000,
0x00004000)
/* BIOS Extension (0xe0000-0xe3fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e0000, 0x000e3fff, 0x00000000,
0x00004000)
/* BIOS Extension (0xe4000-0xe7fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e4000, 0x000e7fff, 0x00000000,
0x00004000)
/* BIOS Extension (0xe8000-0xebfff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e8000, 0x000ebfff, 0x00000000,
0x00004000)
/* BIOS Extension (0xec000-0xeffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000ec000, 0x000effff, 0x00000000,
0x00004000)
/* System BIOS (0xf0000-0xfffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000f0000, 0x000fffff, 0x00000000,
0x00010000)
/* PCI Memory Region (TLUD - 0xdfffffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
NonCacheable, ReadWrite,
0x00000000, 0x00000000, 0xdfffffff, 0x00000000,
0xE0000000,,, PM01)
/* PCI Memory Region (TUUD - (TUUD + ABOVE_4G_MMIO_SIZE)) */
QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
NonCacheable, ReadWrite,
0x00000000, 0x10000, 0x1ffff, 0x00000000,
0x10000,,, PM02)
/* PCH reserved resource (0xfc800000-0xfe7fffff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, PCH_PRESERVED_BASE_ADDRESS, 0xfe7fffff,
0x00000000, PCH_PRESERVED_BASE_SIZE)
#if !CONFIG(TPM_CR50)
/* TPM Area (0xfed40000-0xfed44fff) */
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0xfed40000, 0xfed44fff, 0x00000000,
0x00005000)
#endif
})
/* Find PCI resource area in MCRS */
CreateDwordField (MCRS, PM01._MIN, PMIN)
CreateDwordField (MCRS, PM01._MAX, PMAX)
CreateDwordField (MCRS, PM01._LEN, PLEN)
/*
* Fix up PCI memory region
* Start with Top of Lower Usable DRAM
*/
Store (\_SB.PCI0.MCHC.TLUD, Local0)
Store (\_SB.PCI0.MCHC.MEBA, Local1)
/* Check if ME base is equal */
If (LEqual (Local0, Local1)) {
/* Use Top Of Memory instead */
Store (\_SB.PCI0.MCHC.TOM, Local0)
}
Store (Local0, PMIN)
Add (Subtract (PMAX, PMIN), 1, PLEN)
/* Patch PM02 range based on Memory Size */
If (LEqual (A4GS, 0)) {
CreateQwordField (MCRS, PM02._LEN, MSEN)
Store (0, MSEN)
} Else {
CreateQwordField (MCRS, PM02._MIN, MMIN)
CreateQwordField (MCRS, PM02._MAX, MMAX)
CreateQwordField (MCRS, PM02._LEN, MLEN)
/* Set 64bit MMIO resource base and length */
Store (A4GS, MLEN)
Store (A4GB, MMIN)
Subtract (Add (MMIN, MLEN), 1, MMAX)
}
Return (MCRS)
}
/* Get MCH BAR */
Method (GMHB, 0, Serialized)
{
ShiftLeft (\_SB.PCI0.MCHC.MHBR, 15, Local0)
Return (Local0)
}
/* Get EP BAR */
Method (GEPB, 0, Serialized)
{
ShiftLeft (\_SB.PCI0.MCHC.EPBR, 12, Local0)
Return (Local0)
}
/* Get PCIe BAR */
Method (GPCB, 0, Serialized)
{
ShiftLeft (\_SB.PCI0.MCHC.PXBR, 26, Local0)
Return (Local0)
}
/* Get PCIe Length */
Method (GPCL, 0, Serialized)
{
ShiftRight (0x10000000, \_SB.PCI0.MCHC.PXSZ, Local0)
Return (Local0)
}
/* Get DMI BAR */
Method (GDMB, 0, Serialized)
{
ShiftLeft (\_SB.PCI0.MCHC.DIBR, 12, Local0)
Return (Local0)
}
/* PCI Device Resource Consumption */
Device (PDRC)
{
Name (_HID, EISAID ("PNP0C02"))
Name (_UID, 1)
Method (_CRS, 0, Serialized)
{
Name (BUF0, ResourceTemplate ()
{
/* MCH BAR _BAS will be updated in _CRS below according to
* B0:D0:F0:Reg.48h
*/
Memory32Fixed (ReadWrite, 0, 0x08000, MCHB)
/* DMI BAR _BAS will be updated in _CRS below according to
* B0:D0:F0:Reg.68h
*/
Memory32Fixed (ReadWrite, 0, 0x01000, DMIB)
/* EP BAR _BAS will be updated in _CRS below according to
* B0:D0:F0:Reg.40h
*/
Memory32Fixed (ReadWrite, 0, 0x01000, EGPB)
/* PCI Express BAR _BAS and _LEN will be updated in
* _CRS below according to B0:D0:F0:Reg.60h
*/
Memory32Fixed (ReadWrite, 0, 0, PCIX)
/* VTD engine memory range. */
Memory32Fixed (ReadOnly, VTD_BASE_ADDRESS, VTD_BASE_SIZE)
/* FLASH range */
Memory32Fixed (ReadOnly, 0, CONFIG_ROM_SIZE, FIOH)
/* Local APIC range(0xFEE0_0000 to 0xFEEF_FFFF) */
Memory32Fixed (ReadOnly, 0xFEE00000, 0x100000)
/* HPET address decode range */
Memory32Fixed (ReadWrite, HPET_BASE_ADDRESS, 0x400)
})
CreateDwordField (BUF0, MCHB._BAS, MBR0)
Store (\_SB.PCI0.GMHB (), MBR0)
CreateDwordField (BUF0, DMIB._BAS, DBR0)
Store (\_SB.PCI0.GDMB (), DBR0)
CreateDwordField (BUF0, EGPB._BAS, EBR0)
Store (\_SB.PCI0.GEPB (), EBR0)
CreateDwordField (BUF0, PCIX._BAS, XBR0)
Store (\_SB.PCI0.GPCB (), XBR0)
CreateDwordField (BUF0, PCIX._LEN, XSZ0)
Store (\_SB.PCI0.GPCL (), XSZ0)
CreateDwordField (BUF0, FIOH._BAS, FBR0)
Subtract(0x100000000, CONFIG_ROM_SIZE, FBR0)
Return (BUF0)
}
}
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