mirror of https://github.com/acidanthera/audk.git
EmbeddedPkg: add driver to set graphical/serial console preference
Linux on ARM/arm64 will infer from the presence of a /chosen/stdout-path DT property or of a SPCR ACPI table that the primary console is the serial port, even if a graphical console is available as well. So let's introduce a driver that allows the user to set a preference between graphical and serial if both are available. If the preference is set to 'Graphical', and any GOP protocol instances have been installed by the time the ReadyToBoot event is signalled, remove the DT property and/or the SPCR table entirely. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Ard Biesheuvel
parent
6e32874427
commit
d8e36289ce
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/** @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 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,
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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 <Uefi.h>
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#include <IndustryStandard/Acpi.h>
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#include <libfdt.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/HiiLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Protocol/AcpiTable.h>
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#include <Protocol/AcpiSystemDescriptionTable.h>
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#include "ConsolePrefDxe.h"
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#define SPCR_SIG EFI_ACPI_2_0_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE
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extern UINT8 ConsolePrefHiiBin[];
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extern UINT8 ConsolePrefDxeStrings[];
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typedef struct {
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VENDOR_DEVICE_PATH VendorDevicePath;
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EFI_DEVICE_PATH_PROTOCOL End;
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} HII_VENDOR_DEVICE_PATH;
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STATIC HII_VENDOR_DEVICE_PATH mConsolePrefDxeVendorDevicePath = {
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{
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{
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HARDWARE_DEVICE_PATH,
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HW_VENDOR_DP,
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{
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(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
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(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
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}
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},
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CONSOLE_PREF_FORMSET_GUID
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},
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{
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END_DEVICE_PATH_TYPE,
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END_ENTIRE_DEVICE_PATH_SUBTYPE,
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{
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(UINT8) (END_DEVICE_PATH_LENGTH),
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(UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
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}
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}
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};
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STATIC EFI_EVENT mReadyToBootEvent;
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STATIC
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EFI_STATUS
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InstallHiiPages (
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_HII_HANDLE HiiHandle;
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EFI_HANDLE DriverHandle;
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DriverHandle = NULL;
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Status = gBS->InstallMultipleProtocolInterfaces (&DriverHandle,
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&gEfiDevicePathProtocolGuid,
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&mConsolePrefDxeVendorDevicePath,
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NULL);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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HiiHandle = HiiAddPackages (&gConsolePrefFormSetGuid,
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DriverHandle,
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ConsolePrefDxeStrings,
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ConsolePrefHiiBin,
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NULL);
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if (HiiHandle == NULL) {
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gBS->UninstallMultipleProtocolInterfaces (DriverHandle,
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&gEfiDevicePathProtocolGuid,
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&mConsolePrefDxeVendorDevicePath,
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NULL);
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return EFI_OUT_OF_RESOURCES;
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}
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return EFI_SUCCESS;
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}
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STATIC
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VOID
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RemoveDtStdoutPath (
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VOID
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)
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{
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VOID *Dtb;
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INT32 Node;
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INT32 Error;
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EFI_STATUS Status;
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Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &Dtb);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a: could not retrieve DT blob - %r\n", __FUNCTION__,
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Status));
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return;
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}
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Node = fdt_path_offset (Dtb, "/chosen");
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if (Node < 0) {
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return;
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}
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Error = fdt_delprop (Dtb, Node, "stdout-path");
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if (Error) {
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DEBUG ((DEBUG_INFO, "%a: Failed to delete 'stdout-path' property: %a\n",
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__FUNCTION__, fdt_strerror (Error)));
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}
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}
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STATIC
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VOID
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RemoveSpcrTable (
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VOID
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)
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{
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EFI_ACPI_SDT_PROTOCOL *Sdt;
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EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
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EFI_STATUS Status;
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UINTN TableIndex;
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EFI_ACPI_SDT_HEADER *TableHeader;
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EFI_ACPI_TABLE_VERSION TableVersion;
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UINTN TableKey;
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Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL,
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(VOID **)&AcpiTable);
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if (EFI_ERROR (Status)) {
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return;
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}
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Status = gBS->LocateProtocol (&gEfiAcpiSdtProtocolGuid, NULL, (VOID **)&Sdt);
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if (EFI_ERROR (Status)) {
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return;
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}
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TableIndex = 0;
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TableKey = 0;
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TableHeader = NULL;
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do {
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Status = Sdt->GetAcpiTable (TableIndex++, &TableHeader, &TableVersion,
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&TableKey);
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if (EFI_ERROR (Status)) {
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break;
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}
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if (TableHeader->Signature != SPCR_SIG) {
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continue;
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}
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Status = AcpiTable->UninstallAcpiTable (AcpiTable, TableKey);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_WARN, "%a: failed to uninstall SPCR table - %r\n",
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__FUNCTION__, Status));
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}
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break;
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} while (TRUE);
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}
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STATIC
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VOID
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OnReadyToBoot (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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CONSOLE_PREF_VARSTORE_DATA ConsolePref;
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UINTN BufferSize;
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EFI_STATUS Status;
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VOID *Gop;
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BufferSize = sizeof (ConsolePref);
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Status = gRT->GetVariable (CONSOLE_PREF_VARIABLE_NAME,
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&gConsolePrefFormSetGuid, NULL, &BufferSize, &ConsolePref);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR,
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"%a: variable '%s' could not be read - bailing!\n", __FUNCTION__,
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CONSOLE_PREF_VARIABLE_NAME));
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return;
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}
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if (ConsolePref.Console == CONSOLE_PREF_SERIAL) {
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DEBUG ((DEBUG_INFO,
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"%a: serial console preferred - doing nothing\n", __FUNCTION__));
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return;
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}
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//
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// Check if any GOP instances exist: if so, disable stdout-path and SPCR
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//
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Status = gBS->LocateProtocol (&gEfiGraphicsOutputProtocolGuid, NULL, &Gop);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO,
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"%a: no GOP instances found - doing nothing (%r)\n", __FUNCTION__,
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Status));
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return;
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}
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RemoveDtStdoutPath ();
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RemoveSpcrTable ();
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}
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/**
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The entry point for ConsolePrefDxe driver.
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@param[in] ImageHandle The image handle of the driver.
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@param[in] SystemTable The system table.
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@retval EFI_ALREADY_STARTED The driver already exists in system.
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@retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of
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resources.
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@retval EFI_SUCCES All the related protocols are installed on
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the driver.
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**/
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EFI_STATUS
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EFIAPI
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ConsolePrefDxeEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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CONSOLE_PREF_VARSTORE_DATA ConsolePref;
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UINTN BufferSize;
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//
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// Get the current console preference from the ConsolePref variable.
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//
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BufferSize = sizeof (ConsolePref);
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Status = gRT->GetVariable (CONSOLE_PREF_VARIABLE_NAME,
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&gConsolePrefFormSetGuid, NULL, &BufferSize, &ConsolePref);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO,
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"%a: no console preference found, defaulting to graphical\n",
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__FUNCTION__));
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ConsolePref.Console = CONSOLE_PREF_GRAPHICAL;
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}
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if (!EFI_ERROR (Status) &&
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ConsolePref.Console != CONSOLE_PREF_GRAPHICAL &&
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ConsolePref.Console != CONSOLE_PREF_SERIAL) {
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DEBUG ((DEBUG_WARN, "%a: invalid value for %s, defaulting to graphical\n",
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__FUNCTION__, CONSOLE_PREF_VARIABLE_NAME));
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ConsolePref.Console = CONSOLE_PREF_GRAPHICAL;
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Status = EFI_INVALID_PARAMETER; // trigger setvar below
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}
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//
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// Write the newly selected value back to the variable store.
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//
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if (EFI_ERROR (Status)) {
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ZeroMem (&ConsolePref.Reserved, sizeof (ConsolePref.Reserved));
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Status = gRT->SetVariable (CONSOLE_PREF_VARIABLE_NAME,
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&gConsolePrefFormSetGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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sizeof (ConsolePref), &ConsolePref);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "%a: gRT->SetVariable () failed - %r\n",
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__FUNCTION__, Status));
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return Status;
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}
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}
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Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
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OnReadyToBoot, NULL, &gEfiEventReadyToBootGuid,
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&mReadyToBootEvent);
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ASSERT_EFI_ERROR (Status);
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return InstallHiiPages ();
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}
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@ -0,0 +1,31 @@
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/** @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 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,
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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 __CONSOLE_PREF_DXE_H__
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#define __CONSOLE_PREF_DXE_H__
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#include <Guid/HiiPlatformSetupFormset.h>
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#include <Guid/ConsolePrefFormSet.h>
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#define CONSOLE_PREF_GRAPHICAL 0x0
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#define CONSOLE_PREF_SERIAL 0x1
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#define CONSOLE_PREF_VARIABLE_NAME L"ConsolePref"
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typedef struct {
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UINT8 Console;
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UINT8 Reserved[3];
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} CONSOLE_PREF_VARSTORE_DATA;
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#endif
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@ -0,0 +1,62 @@
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## @file
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#
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# Copyright (c) 2017, Linaro, Ltd. All rights reserved.<BR>
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#
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# This program and the accompanying materials are licensed and made
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# available under the terms and conditions of the BSD License which
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# accompanies this distribution. The full text of the license may be
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# found at 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
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# IMPLIED.
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#
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##
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[Defines]
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INF_VERSION = 0x00010019
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BASE_NAME = ConsolePrefDxe
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FILE_GUID = bbe2668c-0efc-46fb-9137-4f2da8f419f3
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = ConsolePrefDxeEntryPoint
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64
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#
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[Sources]
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ConsolePrefDxe.c
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ConsolePrefHii.vfr
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ConsolePrefHii.uni
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[Packages]
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EmbeddedPkg/EmbeddedPkg.dec
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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[LibraryClasses]
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BaseLib
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DebugLib
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FdtLib
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HiiLib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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UefiLib
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UefiRuntimeServicesTableLib
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[Guids]
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gConsolePrefFormSetGuid
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gFdtTableGuid
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gEfiEventReadyToBootGuid
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[Protocols]
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gEfiAcpiTableProtocolGuid
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gEfiAcpiSdtProtocolGuid
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gEfiGraphicsOutputProtocolGuid
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[Depex]
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gEfiVariableArchProtocolGuid AND
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gEfiVariableWriteArchProtocolGuid
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@ -0,0 +1,27 @@
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/** @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 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,
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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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#langdef en-US "English"
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#string STR_FORM_SET_TITLE #language en-US "Console Preference Selection"
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#string STR_FORM_SET_TITLE_HELP #language en-US "Press <Enter> to choose between graphical and serial console."
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#string STR_MAIN_FORM_TITLE #language en-US "Console Preference Selection"
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#string STR_NULL_STRING #language en-US ""
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#string STR_CONSOLE_PREF_SELECT_PROMPT #language en-US "Preferred console"
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#string STR_CONSOLE_PREF_SELECT_HELP #language en-US "Select the preferred console if both graphical and serial are available."
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#string STR_CONSOLE_PREF_GRAPHICAL #language en-US "Graphical"
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#string STR_CONSOLE_PREF_SERIAL #language en-US "Serial"
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@ -0,0 +1,51 @@
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/** @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 are licensed and made available
|
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* under the terms and conditions of the BSD License which accompanies this
|
||||
* distribution. The full text of the license may be found at
|
||||
* http://opensource.org/licenses/bsd-license.php
|
||||
*
|
||||
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
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*
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**/
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#include "ConsolePrefDxe.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 = CONSOLE_PREF_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 CONSOLE_PREF_VARSTORE_DATA,
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attribute = EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE, // EFI variable attributes
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name = ConsolePref,
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guid = CONSOLE_PREF_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 = ConsolePref.Console,
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prompt = STRING_TOKEN(STR_CONSOLE_PREF_SELECT_PROMPT),
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help = STRING_TOKEN(STR_CONSOLE_PREF_SELECT_HELP),
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flags = NUMERIC_SIZE_1 | INTERACTIVE,
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option text = STRING_TOKEN(STR_CONSOLE_PREF_GRAPHICAL), value = CONSOLE_PREF_GRAPHICAL, flags = DEFAULT;
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option text = STRING_TOKEN(STR_CONSOLE_PREF_SERIAL), value = CONSOLE_PREF_SERIAL, 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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||||
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endformset;
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@ -67,6 +67,9 @@
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# File GUID for default DTB image embedded in the firmware volume
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gDtPlatformDefaultDtbFileGuid = { 0x25462cda, 0x221f, 0x47df, { 0xac, 0x1d, 0x25, 0x9c, 0xfa, 0xa4, 0xe3, 0x26 } }
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|
||||
# HII form set GUID for ConsolePrefDxe driver
|
||||
gConsolePrefFormSetGuid = { 0x2d2358b4, 0xe96c, 0x484d, { 0xb2, 0xdd, 0x7c, 0x2e, 0xdf, 0xc7, 0xd5, 0x6f } }
|
||||
|
||||
[Protocols.common]
|
||||
gHardwareInterruptProtocolGuid = { 0x2890B3EA, 0x053D, 0x1643, { 0xAD, 0x0C, 0xD6, 0x48, 0x08, 0xDA, 0x3F, 0xF1 } }
|
||||
gHardwareInterrupt2ProtocolGuid = { 0x32898322, 0x2da1, 0x474a, { 0xba, 0xaa, 0xf3, 0xf7, 0xcf, 0x56, 0x94, 0x70 } }
|
||||
|
|
|
|||
|
|
@ -0,0 +1,23 @@
|
|||
/** @file
|
||||
*
|
||||
* Copyright (c) 2017, Linaro Limited. All rights reserved.
|
||||
*
|
||||
* This program and the accompanying materials are licensed and made available
|
||||
* under the terms and conditions of the BSD License which accompanies this
|
||||
* distribution. The full text of the license may be found at
|
||||
* http://opensource.org/licenses/bsd-license.php
|
||||
*
|
||||
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||||
*
|
||||
**/
|
||||
|
||||
#ifndef __CONSOLE_PREF_FORMSET_H__
|
||||
#define __CONSOLE_PREF_FORMSET_H__
|
||||
|
||||
#define CONSOLE_PREF_FORMSET_GUID \
|
||||
{ 0x2d2358b4, 0xe96c, 0x484d, { 0xb2, 0xdd, 0x7c, 0x2e, 0xdf, 0xc7, 0xd5, 0x6f } }
|
||||
|
||||
extern EFI_GUID gConsolePrefFormSetGuid;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue