diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe')
| -rw-r--r-- | roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.c | 66 | ||||
| -rw-r--r-- | roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.inf | 37 |
2 files changed, 103 insertions, 0 deletions
diff --git a/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.c b/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.c new file mode 100644 index 000000000..3bda69257 --- /dev/null +++ b/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.c @@ -0,0 +1,66 @@ +/** @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/UefiBootServicesTableLib.h>
+
+EFI_STATUS
+EFIAPI
+XenPlatformHasAcpiDt (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // 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) {
+ Status = gBS->InstallProtocolInterface (
+ &ImageHandle,
+ &gEdkiiPlatformHasAcpiGuid,
+ EFI_NATIVE_INTERFACE,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Failed;
+ }
+ }
+
+ //
+ // Expose the Device Tree unconditionally.
+ //
+ 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/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.inf b/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.inf new file mode 100644 index 000000000..bc9973d46 --- /dev/null +++ b/roms/edk2/ArmVirtPkg/XenPlatformHasAcpiDtDxe/XenPlatformHasAcpiDtDxe.inf @@ -0,0 +1,37 @@ +## @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 = XenPlatformHasAcpiDtDxe
+ FILE_GUID = 6914c46f-d46e-48dc-9998-8a5f64f02553
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = XenPlatformHasAcpiDt
+
+[Sources]
+ XenPlatformHasAcpiDtDxe.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+
+[Guids]
+ gEdkiiPlatformHasAcpiGuid ## SOMETIMES_PRODUCES ## PROTOCOL
+ gEdkiiPlatformHasDeviceTreeGuid ## PRODUCES ## PROTOCOL
+
+[Depex]
+ TRUE
|