diff options
| -rw-r--r-- | ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c | 45 | ||||
| -rw-r--r-- | ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf | 7 |
2 files changed, 29 insertions, 23 deletions
diff --git a/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c b/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c index a718ce1..8932dac 100644 --- a/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c +++ b/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c @@ -17,7 +17,7 @@ #include <Guid/PlatformHasDeviceTree.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
-#include <Library/PcdLib.h>
+#include <Library/QemuFwCfgLib.h>
#include <Library/UefiBootServicesTableLib.h>
EFI_STATUS
@@ -27,18 +27,27 @@ PlatformHasAcpiDt ( IN EFI_SYSTEM_TABLE *SystemTable
)
{
- EFI_STATUS Status;
-
- Status = EFI_SUCCESS;
+ EFI_STATUS Status;
+ FIRMWARE_CONFIG_ITEM FwCfgItem;
+ UINTN FwCfgSize;
//
// If we fail to install any of the necessary protocols below, the OS will be
// unbootable anyway (due to lacking hardware description), so tolerate no
// errors here.
//
- // Always make ACPI available on 64-bit systems.
- //
- if (MAX_UINTN == MAX_UINT64) {
+ if (MAX_UINTN == MAX_UINT64 &&
+ !EFI_ERROR (
+ QemuFwCfgFindFile (
+ "etc/table-loader",
+ &FwCfgItem,
+ &FwCfgSize
+ )
+ )) {
+ //
+ // Only make ACPI available on 64-bit systems, and only if QEMU generates
+ // (a subset of) the ACPI tables.
+ //
Status = gBS->InstallProtocolInterface (
&ImageHandle,
&gEdkiiPlatformHasAcpiGuid,
@@ -48,21 +57,21 @@ PlatformHasAcpiDt ( if (EFI_ERROR (Status)) {
goto Failed;
}
+
+ return Status;
}
//
- // Expose the Device Tree unless PcdPureAcpiBoot is set.
+ // Expose the Device Tree otherwise.
//
- if (!FeaturePcdGet (PcdPureAcpiBoot)) {
- Status = gBS->InstallProtocolInterface (
- &ImageHandle,
- &gEdkiiPlatformHasDeviceTreeGuid,
- EFI_NATIVE_INTERFACE,
- NULL
- );
- if (EFI_ERROR (Status)) {
- goto Failed;
- }
+ Status = gBS->InstallProtocolInterface (
+ &ImageHandle,
+ &gEdkiiPlatformHasDeviceTreeGuid,
+ EFI_NATIVE_INTERFACE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Failed;
}
return Status;
diff --git a/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf b/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf index 2450500..4466bea 100644 --- a/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf +++ b/ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf @@ -25,14 +25,14 @@ PlatformHasAcpiDtDxe.c
[Packages]
- ArmVirtPkg/ArmVirtPkg.dec
EmbeddedPkg/EmbeddedPkg.dec
MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
DebugLib
- PcdLib
+ QemuFwCfgLib
UefiBootServicesTableLib
UefiDriverEntryPoint
@@ -40,8 +40,5 @@ gEdkiiPlatformHasAcpiGuid ## SOMETIMES_PRODUCES ## PROTOCOL
gEdkiiPlatformHasDeviceTreeGuid ## SOMETIMES_PRODUCES ## PROTOCOL
-[FeaturePcd]
- gArmVirtTokenSpaceGuid.PcdPureAcpiBoot ## CONSUMES
-
[Depex]
TRUE
|