diff options
| author | Sunil V L <sunilvl@ventanamicro.com> | 2022-09-21 06:36:37 +0530 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-02-16 05:53:28 +0000 |
| commit | 09cd17b0deef4920a1845f70b0e4859f57726e6a (patch) | |
| tree | 60595c05ce73d0c9ac088c780d1659ae74834d5a /OvmfPkg/PlatformHasAcpiDtDxe | |
| parent | a7dec790dc11427abc841d5a938df3319aad07fb (diff) | |
| download | edk2-09cd17b0deef4920a1845f70b0e4859f57726e6a.tar.gz | |
ArmVirtPkg/PlatformHasAcpiDtDxe: Move to OvmfPkg
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076
This module is required by other architectures like RISC-V.
Hence, move this to OvmfPkg.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Andrei Warkentin <andrei.warkentin@intel.com>
Diffstat (limited to 'OvmfPkg/PlatformHasAcpiDtDxe')
| -rw-r--r-- | OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c | 83 | ||||
| -rw-r--r-- | OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf | 43 |
2 files changed, 126 insertions, 0 deletions
diff --git a/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c b/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c new file mode 100644 index 0000000000..952d9bfc1f --- /dev/null +++ b/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.c @@ -0,0 +1,83 @@ +/** @file
+ Decide whether the firmware should expose an ACPI- and/or a Device Tree-based
+ hardware description to the operating system.
+
+ Copyright (c) 2017, Red Hat, Inc.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Guid/PlatformHasAcpi.h>
+#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
+EFIAPI
+PlatformHasAcpiDt (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ 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.
+ //
+ if ((MAX_UINTN == MAX_UINT64) &&
+ !PcdGetBool (PcdForceNoAcpi) &&
+ !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,
+ EFI_NATIVE_INTERFACE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Failed;
+ }
+
+ return Status;
+ }
+
+ //
+ // Expose the Device Tree otherwise.
+ //
+ Status = gBS->InstallProtocolInterface (
+ &ImageHandle,
+ &gEdkiiPlatformHasDeviceTreeGuid,
+ EFI_NATIVE_INTERFACE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Failed;
+ }
+
+ return Status;
+
+Failed:
+ ASSERT_EFI_ERROR (Status);
+ CpuDeadLoop ();
+ //
+ // Keep compilers happy.
+ //
+ return Status;
+}
diff --git a/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf b/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf new file mode 100644 index 0000000000..85873f73b2 --- /dev/null +++ b/OvmfPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf @@ -0,0 +1,43 @@ +## @file
+# Decide whether the firmware should expose an ACPI- and/or a Device Tree-based
+# hardware description to the operating system.
+#
+# Copyright (c) 2017, Red Hat, Inc.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = PlatformHasAcpiDtDxe
+ FILE_GUID = 9d1dd27f-6d7f-427b-aec4-b62f6279c2f1
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = PlatformHasAcpiDt
+
+[Sources]
+ PlatformHasAcpiDtDxe.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ PcdLib
+ QemuFwCfgLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+
+[Guids]
+ gEdkiiPlatformHasAcpiGuid ## SOMETIMES_PRODUCES ## PROTOCOL
+ gEdkiiPlatformHasDeviceTreeGuid ## SOMETIMES_PRODUCES ## PROTOCOL
+
+[Pcd]
+ gUefiOvmfPkgTokenSpaceGuid.PcdForceNoAcpi
+
+[Depex]
+ gEfiVariableArchProtocolGuid
|