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OvmfPkg/AcpiTables/Dsdt.asl: report the PCI IO ranges set in FWDT 

Based on SeaBIOS commit 2062f2ba by Gerd Hoffmann <kraxel@redhat.com>.

v3: comments on FWDT fields

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13576 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2012-07-31 18:18:20 +00:00
parent 0228e59863
commit cf98e61d1a
1 changed files with 85 additions and 4 deletions
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89
OvmfPkg/AcpiTables/Dsdt.asl
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@ -36,7 +36,7 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 1, "INTEL ", "OVMF ", 3) {
//
// BUS, I/O, and MMIO resources
//
Name (_CRS, ResourceTemplate () {
Name (CRES, ResourceTemplate () {
WORDBusNumber ( // Bus number resource (0); the bridge produces bus numbers for its subsequent buses
ResourceProducer, // bit 0 of general flags is 1
MinFixed, // Range is fixed
@ -91,21 +91,102 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 1, "INTEL ", "OVMF ", 3) {
0x00020000 // Range Length
)
DWORDMEMORY ( // Descriptor for linear frame buffer video RAM
DWORDMEMORY ( // Descriptor for 32-bit MMIO
ResourceProducer, // bit 0 of general flags is 0
PosDecode,
MinFixed, // Range is fixed
MaxFixed, // Range is Fixed
Cacheable,
NonCacheable,
ReadWrite,
0x00000000, // Granularity
0xF8000000, // Min
0xFFFBFFFF, // Max
0x00000000, // Translation
0x07FC0000 // Range Length
0x07FC0000, // Range Length
, // ResourceSourceIndex
, // ResourceSource
PW32 // DescriptorName
)
})
Name (CR64, ResourceTemplate () {
QWordMemory ( // Descriptor for 64-bit MMIO
ResourceProducer, // bit 0 of general flags is 0
PosDecode,
MinFixed, // Range is fixed
MaxFixed, // Range is Fixed
Cacheable,
ReadWrite,
0x00000000, // Granularity
0x8000000000, // Min
0xFFFFFFFFFF, // Max
0x00000000, // Translation
0x8000000000, // Range Length
, // ResourceSourceIndex
, // ResourceSource
PW64 // DescriptorName
)
})
Method (_CRS, 0) {
//
// see the FIRMWARE_DATA structure in "OvmfPkg/AcpiPlatformDxe/Qemu.c"
//
External (FWDT, OpRegionObj)
Field(FWDT, QWordAcc, NoLock, Preserve) {
P0S, 64, // PciWindow32.Base
P0E, 64, // PciWindow32.End
P0L, 64, // PciWindow32.Length
P1S, 64, // PciWindow64.Base
P1E, 64, // PciWindow64.End
P1L, 64 // PciWindow64.Length
}
Field(FWDT, DWordAcc, NoLock, Preserve) {
P0SL, 32, // PciWindow32.Base, low 32 bits
P0SH, 32, // PciWindow32.Base, high 32 bits
P0EL, 32, // PciWindow32.End, low 32 bits
P0EH, 32, // PciWindow32.End, high 32 bits
P0LL, 32, // PciWindow32.Length, low 32 bits
P0LH, 32, // PciWindow32.Length, high 32 bits
P1SL, 32, // PciWindow64.Base, low 32 bits
P1SH, 32, // PciWindow64.Base, high 32 bits
P1EL, 32, // PciWindow64.End, low 32 bits
P1EH, 32, // PciWindow64.End, high 32 bits
P1LL, 32, // PciWindow64.Length, low 32 bits
P1LH, 32 // PciWindow64.Length, high 32 bits
}
//
// fixup 32-bit PCI IO window
//
CreateDWordField (CRES, \_SB.PCI0.PW32._MIN, PS32)
CreateDWordField (CRES, \_SB.PCI0.PW32._MAX, PE32)
CreateDWordField (CRES, \_SB.PCI0.PW32._LEN, PL32)
Store (P0SL, PS32)
Store (P0EL, PE32)
Store (P0LL, PL32)
If (LAnd (LEqual (P1SL, 0x00), LEqual (P1SH, 0x00))) {
Return (CRES)
} Else {
//
// fixup 64-bit PCI IO window
//
CreateQWordField (CR64, \_SB.PCI0.PW64._MIN, PS64)
CreateQWordField (CR64, \_SB.PCI0.PW64._MAX, PE64)
CreateQWordField (CR64, \_SB.PCI0.PW64._LEN, PL64)
Store (P1S, PS64)
Store (P1E, PE64)
Store (P1L, PL64)
//
// add window and return result
//
ConcatenateResTemplate (CRES, CR64, Local0)
Return (Local0)
}
}
//
// PCI Interrupt Routing Table - PIC Mode Only
//