Daan De Meyer
c60a8c72d1
Instead of introducing efi-forward.h, we use efi.h for the same purpose in the boot/ folder.
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright © 2013 Intel Corporation
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* Authored by Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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*/
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#include "efi-log.h"
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#include "graphics.h"
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#include "proto/console-control.h"
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#include "proto/simple-text-io.h"
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EFI_STATUS graphics_mode(bool on) {
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EFI_CONSOLE_CONTROL_PROTOCOL *ConsoleControl = NULL;
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EFI_CONSOLE_CONTROL_SCREEN_MODE new;
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EFI_CONSOLE_CONTROL_SCREEN_MODE current;
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bool uga_exists, stdin_locked;
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EFI_STATUS err;
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err = BS->LocateProtocol(MAKE_GUID_PTR(EFI_CONSOLE_CONTROL_PROTOCOL), NULL, (void **) &ConsoleControl);
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if (err != EFI_SUCCESS)
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/* console control protocol is nonstandard and might not exist. */
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return err == EFI_NOT_FOUND ? EFI_SUCCESS : err;
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/* check current mode */
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err = ConsoleControl->GetMode(ConsoleControl, ¤t, &uga_exists, &stdin_locked);
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if (err != EFI_SUCCESS)
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return err;
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/* do not touch the mode */
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new = on ? EfiConsoleControlScreenGraphics : EfiConsoleControlScreenText;
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if (new == current)
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return EFI_SUCCESS;
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log_wait();
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err = ConsoleControl->SetMode(ConsoleControl, new);
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/* some firmware enables the cursor when switching modes */
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ST->ConOut->EnableCursor(ST->ConOut, false);
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return err;
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}
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