107 строки
2.4 KiB
C
107 строки
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Linux logo to be displayed on boot
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*
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* Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)
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* Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>
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* Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>
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* Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>
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*/
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#include <linux/linux_logo.h>
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#include <linux/stddef.h>
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#include <linux/module.h>
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#ifdef CONFIG_M68K
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#include <asm/setup.h>
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#endif
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static bool nologo;
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module_param(nologo, bool, 0);
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MODULE_PARM_DESC(nologo, "Disables startup logo");
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/*
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* Logos are located in the initdata, and will be freed in kernel_init.
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* Use late_init to mark the logos as freed to prevent any further use.
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*/
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static bool logos_freed;
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static int __init fb_logo_late_init(void)
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{
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logos_freed = true;
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return 0;
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}
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late_initcall_sync(fb_logo_late_init);
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/* logo's are marked __initdata. Use __ref to tell
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* modpost that it is intended that this function uses data
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* marked __initdata.
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*/
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const struct linux_logo * __ref fb_find_logo(int depth)
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{
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const struct linux_logo *logo = NULL;
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if (nologo || logos_freed)
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return NULL;
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if (depth >= 1) {
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#ifdef CONFIG_LOGO_LINUX_MONO
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/* Generic Linux logo */
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logo = &logo_linux_mono;
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#endif
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#ifdef CONFIG_LOGO_SUPERH_MONO
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/* SuperH Linux logo */
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logo = &logo_superh_mono;
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#endif
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}
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if (depth >= 4) {
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#ifdef CONFIG_LOGO_LINUX_VGA16
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/* Generic Linux logo */
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logo = &logo_linux_vga16;
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#endif
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#ifdef CONFIG_LOGO_SUPERH_VGA16
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/* SuperH Linux logo */
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logo = &logo_superh_vga16;
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#endif
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}
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if (depth >= 8) {
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#ifdef CONFIG_LOGO_LINUX_CLUT224
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/* Generic Linux logo */
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logo = &logo_linux_clut224;
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#endif
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#ifdef CONFIG_LOGO_DEC_CLUT224
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/* DEC Linux logo on MIPS/MIPS64 or ALPHA */
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logo = &logo_dec_clut224;
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#endif
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#ifdef CONFIG_LOGO_MAC_CLUT224
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/* Macintosh Linux logo on m68k */
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if (MACH_IS_MAC)
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logo = &logo_mac_clut224;
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#endif
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#ifdef CONFIG_LOGO_PARISC_CLUT224
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/* PA-RISC Linux logo */
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logo = &logo_parisc_clut224;
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#endif
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#ifdef CONFIG_LOGO_SGI_CLUT224
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/* SGI Linux logo on MIPS/MIPS64 */
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logo = &logo_sgi_clut224;
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#endif
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#ifdef CONFIG_LOGO_SUN_CLUT224
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/* Sun Linux logo */
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logo = &logo_sun_clut224;
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#endif
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#ifdef CONFIG_LOGO_SUPERH_CLUT224
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/* SuperH Linux logo */
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logo = &logo_superh_clut224;
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#endif
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}
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return logo;
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}
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EXPORT_SYMBOL_GPL(fb_find_logo);
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