Add the shorter-term library instance outlined in the previous patch to EmbeddedPkg, so that we can imbue AcpiTableDxe with a protocol dependency on EDKII_PLATFORM_HAS_ACPI_GUID. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Leif Lindholm <leif.lindholm@linaro.org> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
		
			
				
	
	
		
			37 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			37 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /** @file
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|   A hook-in library for MdeModulePkg/Universal/Acpi/AcpiTableDxe.
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| 
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|   Plugging this library instance into AcpiTableDxe makes
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|   EFI_ACPI_TABLE_PROTOCOL and (if enabled) EFI_ACPI_SDT_PROTOCOL depend on the
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|   platform's dynamic decision whether to expose an ACPI-based hardware
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|   description to the operating system.
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| 
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|   Universal and platform specific DXE drivers that produce ACPI tables depend
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|   on EFI_ACPI_TABLE_PROTOCOL / EFI_ACPI_SDT_PROTOCOL in turn.
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| 
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|   Copyright (C) 2017, Red Hat, Inc.
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| 
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|   This program and the accompanying materials are licensed and made available
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|   under the terms and conditions of the BSD License which accompanies this
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|   distribution. The full text of the license may be found at
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|   http://opensource.org/licenses/bsd-license.php
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| 
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|   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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|   WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| **/
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| 
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| #include <Base.h>
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| 
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| RETURN_STATUS
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| EFIAPI
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| PlatformHasAcpiInitialize (
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|   VOID
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|   )
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| {
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|   //
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|   // Do nothing, just imbue AcpiTableDxe with a protocol dependency on
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|   // EDKII_PLATFORM_HAS_ACPI_GUID.
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|   //
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|   return RETURN_SUCCESS;
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| }
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