tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

OvmfPkg: scan memory space map and populate FWDT (32-bit fields only) 

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

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13574 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2012-07-31 18:18:01 +00:00
parent 253a2ea73f
commit 57c0beb609
2 changed files with 88 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
View File

@ -48,6 +48,7 @@
QemuFwCfgLib
MemoryAllocationLib
BaseLib
DxeServicesTableLib
[Protocols]
gEfiAcpiTableProtocolGuid # PROTOCOL ALWAYS_CONSUMED

88
OvmfPkg/AcpiPlatformDxe/Qemu.c
View File

@ -16,6 +16,7 @@
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/QemuFwCfgLib.h>
#include <Library/DxeServicesTableLib.h>
BOOLEAN
@ -121,7 +122,92 @@ PopulateFwData(
OUT FIRMWARE_DATA *FwData
)
{
return EFI_SUCCESS;
EFI_STATUS Status;
UINTN NumDesc;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR *AllDesc;
Status = gDS->GetMemorySpaceMap (&NumDesc, &AllDesc);
if (Status == EFI_SUCCESS) {
UINT64 NonMmio32MaxExclTop;
UINT64 Mmio32MinBase;
UINT64 Mmio32MaxExclTop;
UINTN CurDesc;
Status = EFI_UNSUPPORTED;
NonMmio32MaxExclTop = 0;
Mmio32MinBase = BASE_4GB;
Mmio32MaxExclTop = 0;
for (CurDesc = 0; CurDesc < NumDesc; ++CurDesc) {
CONST EFI_GCD_MEMORY_SPACE_DESCRIPTOR *Desc;
UINT64 ExclTop;
Desc = &AllDesc[CurDesc];
ExclTop = Desc->BaseAddress + Desc->Length;
if (ExclTop <= BASE_4GB) {
switch (Desc->GcdMemoryType) {
case EfiGcdMemoryTypeNonExistent:
break;
case EfiGcdMemoryTypeReserved:
case EfiGcdMemoryTypeSystemMemory:
if (NonMmio32MaxExclTop < ExclTop) {
NonMmio32MaxExclTop = ExclTop;
}
break;
case EfiGcdMemoryTypeMemoryMappedIo:
if (Mmio32MinBase > Desc->BaseAddress) {
Mmio32MinBase = Desc->BaseAddress;
}
if (Mmio32MaxExclTop < ExclTop) {
Mmio32MaxExclTop = ExclTop;
}
break;
default:
ASSERT(0);
}
}
}
if (Mmio32MinBase < NonMmio32MaxExclTop) {
Mmio32MinBase = NonMmio32MaxExclTop;
}
if (Mmio32MinBase < Mmio32MaxExclTop) {
FwData->PciWindow32.Base = Mmio32MinBase;
FwData->PciWindow32.End = Mmio32MaxExclTop - 1;
FwData->PciWindow32.Length = Mmio32MaxExclTop - Mmio32MinBase;
FwData->PciWindow64.Base = 0;
FwData->PciWindow64.End = 0;
FwData->PciWindow64.Length = 0;
Status = EFI_SUCCESS;
}
FreePool (AllDesc);
}
DEBUG ((
DEBUG_INFO,
"ACPI PciWindow32: Base=0x%08lx End=0x%08lx Length=0x%08lx\n",
FwData->PciWindow32.Base,
FwData->PciWindow32.End,
FwData->PciWindow32.Length
));
DEBUG ((
DEBUG_INFO,
"ACPI PciWindow64: Base=0x%08lx End=0x%08lx Length=0x%08lx\n",
FwData->PciWindow64.Base,
FwData->PciWindow64.End,
FwData->PciWindow64.Length
));
return Status;
}