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>
52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
/** @file
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*
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* Copyright (c) 2017, Linaro, Ltd. 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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#include "DtPlatformDxe.h"
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//
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// EFI Variable attributes
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//
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#define EFI_VARIABLE_NON_VOLATILE 0x00000001
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#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002
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#define EFI_VARIABLE_RUNTIME_ACCESS 0x00000004
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#define EFI_VARIABLE_READ_ONLY 0x00000008
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formset
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guid = DT_PLATFORM_FORMSET_GUID,
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title = STRING_TOKEN(STR_FORM_SET_TITLE),
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help = STRING_TOKEN(STR_FORM_SET_TITLE_HELP),
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classguid = EFI_HII_PLATFORM_SETUP_FORMSET_GUID,
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efivarstore DT_ACPI_VARSTORE_DATA,
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attribute = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE, // EFI variable attributes
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name = DtAcpiPref,
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guid = DT_PLATFORM_FORMSET_GUID;
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form formid = 0x1000,
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title = STRING_TOKEN(STR_MAIN_FORM_TITLE);
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oneof varid = DtAcpiPref.Pref,
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prompt = STRING_TOKEN(STR_DT_ACPI_SELECT_PROMPT),
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help = STRING_TOKEN(STR_DT_ACPI_SELECT_HELP),
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flags = NUMERIC_SIZE_1 | INTERACTIVE | RESET_REQUIRED,
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option text = STRING_TOKEN(STR_DT_ACPI_SELECT_DT), value = DT_ACPI_SELECT_DT, flags = DEFAULT;
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option text = STRING_TOKEN(STR_DT_ACPI_SELECT_ACPI), value = DT_ACPI_SELECT_ACPI, flags = 0;
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endoneof;
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subtitle text = STRING_TOKEN(STR_NULL_STRING);
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endform;
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endformset;
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