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| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-07-31 18:18:01 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-07-31 18:18:01 +0000 |
| commit | 57c0beb609a75349c067075b45cdafce1a1b77f8 (patch) | |
| tree | 87c8adf9ed5dd5ccc15678da930f20c293c9c5f9 /OvmfPkg/AcpiPlatformDxe/Qemu.c | |
| parent | 253a2ea73fe0a3a02177c25930c289df77e122b2 (diff) | |
| download | edk2-57c0beb609a75349c067075b45cdafce1a1b77f8.tar.gz edk2-57c0beb609a75349c067075b45cdafce1a1b77f8.tar.bz2 edk2-57c0beb609a75349c067075b45cdafce1a1b77f8.zip | |
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
Diffstat (limited to 'OvmfPkg/AcpiPlatformDxe/Qemu.c')
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/Qemu.c | 88 |
1 files changed, 87 insertions, 1 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/Qemu.c b/OvmfPkg/AcpiPlatformDxe/Qemu.c index 7088733905..051449d72a 100644 --- a/OvmfPkg/AcpiPlatformDxe/Qemu.c +++ b/OvmfPkg/AcpiPlatformDxe/Qemu.c @@ -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;
}
|