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1// SPDX-License-Identifier: GPL-2.0-only2 3/*4 * Linux logo to be displayed on boot5 *6 * Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)7 * Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)8 * Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>9 * Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>10 * Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>11 */12 13#include <linux/linux_logo.h>14#include <linux/stddef.h>15#include <linux/module.h>16 17#ifdef CONFIG_M68K18#include <asm/setup.h>19#endif20 21static bool nologo;22module_param(nologo, bool, 0);23MODULE_PARM_DESC(nologo, "Disables startup logo");24 25/*26 * Logos are located in the initdata, and will be freed in kernel_init.27 * Use late_init to mark the logos as freed to prevent any further use.28 */29 30static bool logos_freed;31 32static int __init fb_logo_late_init(void)33{34 logos_freed = true;35 return 0;36}37 38late_initcall_sync(fb_logo_late_init);39 40/* logo's are marked __initdata. Use __ref to tell41 * modpost that it is intended that this function uses data42 * marked __initdata.43 */44const struct linux_logo * __ref fb_find_logo(int depth)45{46 const struct linux_logo *logo = NULL;47 48 if (nologo || logos_freed)49 return NULL;50 51 if (depth >= 1) {52#ifdef CONFIG_LOGO_LINUX_MONO53 /* Generic Linux logo */54 logo = &logo_linux_mono;55#endif56#ifdef CONFIG_LOGO_SUPERH_MONO57 /* SuperH Linux logo */58 logo = &logo_superh_mono;59#endif60 }61 62 if (depth >= 4) {63#ifdef CONFIG_LOGO_LINUX_VGA1664 /* Generic Linux logo */65 logo = &logo_linux_vga16;66#endif67#ifdef CONFIG_LOGO_SUPERH_VGA1668 /* SuperH Linux logo */69 logo = &logo_superh_vga16;70#endif71 }72 73 if (depth >= 8) {74#ifdef CONFIG_LOGO_LINUX_CLUT22475 /* Generic Linux logo */76 logo = &logo_linux_clut224;77#endif78#ifdef CONFIG_LOGO_DEC_CLUT22479 /* DEC Linux logo on MIPS/MIPS64 or ALPHA */80 logo = &logo_dec_clut224;81#endif82#ifdef CONFIG_LOGO_MAC_CLUT22483 /* Macintosh Linux logo on m68k */84 if (MACH_IS_MAC)85 logo = &logo_mac_clut224;86#endif87#ifdef CONFIG_LOGO_PARISC_CLUT22488 /* PA-RISC Linux logo */89 logo = &logo_parisc_clut224;90#endif91#ifdef CONFIG_LOGO_SGI_CLUT22492 /* SGI Linux logo on MIPS/MIPS64 */93 logo = &logo_sgi_clut224;94#endif95#ifdef CONFIG_LOGO_SUN_CLUT22496 /* Sun Linux logo */97 logo = &logo_sun_clut224;98#endif99#ifdef CONFIG_LOGO_SUPERH_CLUT224100 /* SuperH Linux logo */101 logo = &logo_superh_clut224;102#endif103 }104 return logo;105}106EXPORT_SYMBOL_GPL(fb_find_logo);107