779cc439e8
As a follow up to the changes proposed by Laszlo to make ACPI and DT
mutually exclusive on ArmVirtQemu, this patch proposes a DT platform
DXE driver that either installs the NULL protocol PlatformHasAcpiGuid,
or installs the FV embedded DTB binary as a configuration table under
the appropriate GUID, depending on a preference setting recorded as
a UEFI variable, and configurable via a HII screen.
The DTB binary can be embedded in the firmware image by adding the
following to the platform .fdf file:
FILE FREEFORM = 25462CDA-221F-47DF-AC1D-259CFAA4E326 {
SECTION RAW = SomePkg/path/to/foo.dtb
}
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
32 lines
897 B
C
32 lines
897 B
C
/** @file
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*
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* Copyright (c) 2017, Linaro Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this 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,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef __DT_PLATFORM_DXE_H__
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#define __DT_PLATFORM_DXE_H__
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#include <Guid/HiiPlatformSetupFormset.h>
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#include <Guid/DtPlatformFormSet.h>
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#define DT_ACPI_SELECT_DT 0x0
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#define DT_ACPI_SELECT_ACPI 0x1
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#define DT_ACPI_VARIABLE_NAME L"DtAcpiPref"
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typedef struct {
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UINT8 Pref;
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UINT8 Reserved[3];
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} DT_ACPI_VARSTORE_DATA;
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#endif
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