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