diff options
Diffstat (limited to 'OvmfPkg/AcpiTables')
| -rw-r--r-- | OvmfPkg/AcpiTables/Dsdt.asl | 89 |
1 files changed, 85 insertions, 4 deletions
diff --git a/OvmfPkg/AcpiTables/Dsdt.asl b/OvmfPkg/AcpiTables/Dsdt.asl index f7ae92b0b5..0ef0d3d0a0 100644 --- a/OvmfPkg/AcpiTables/Dsdt.asl +++ b/OvmfPkg/AcpiTables/Dsdt.asl @@ -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
//
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