1 2 /* 3 * Linux logo to be displayed on boot 4 * 5 * Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu) 6 * Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 7 * Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au> 8 * Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de> 9 * Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org> 10 */ 11 12 #include <linux/linux_logo.h> 13 #include <linux/stddef.h> 14 #include <linux/module.h> 15 16 #ifdef CONFIG_M68K 17 #include <asm/setup.h> 18 #endif 19 20 static bool nologo; 21 module_param(nologo, bool, 0); 22 MODULE_PARM_DESC(nologo, "Disables startup logo"); 23 24 /* 25 * Logos are located in the initdata, and will be freed in kernel_init. 26 * Use late_init to mark the logos as freed to prevent any further use. 27 */ 28 29 static bool logos_freed; 30 31 static int __init fb_logo_late_init(void) 32 { 33 logos_freed = true; 34 return 0; 35 } 36 37 late_initcall_sync(fb_logo_late_init); 38 39 /* logo's are marked __initdata. Use __ref to tell 40 * modpost that it is intended that this function uses data 41 * marked __initdata. 42 */ 43 const struct linux_logo * __ref fb_find_logo(int depth) 44 { 45 const struct linux_logo *logo = NULL; 46 47 if (nologo || logos_freed) 48 return NULL; 49 50 if (depth >= 1) { 51 #ifdef CONFIG_LOGO_LINUX_MONO 52 /* Generic Linux logo */ 53 logo = &logo_linux_mono; 54 #endif 55 #ifdef CONFIG_LOGO_SUPERH_MONO 56 /* SuperH Linux logo */ 57 logo = &logo_superh_mono; 58 #endif 59 } 60 61 if (depth >= 4) { 62 #ifdef CONFIG_LOGO_LINUX_VGA16 63 /* Generic Linux logo */ 64 logo = &logo_linux_vga16; 65 #endif 66 #ifdef CONFIG_LOGO_SUPERH_VGA16 67 /* SuperH Linux logo */ 68 logo = &logo_superh_vga16; 69 #endif 70 } 71 72 if (depth >= 8) { 73 #ifdef CONFIG_LOGO_LINUX_CLUT224 74 /* Generic Linux logo */ 75 logo = &logo_linux_clut224; 76 #endif 77 #ifdef CONFIG_LOGO_DEC_CLUT224 78 /* DEC Linux logo on MIPS/MIPS64 or ALPHA */ 79 logo = &logo_dec_clut224; 80 #endif 81 #ifdef CONFIG_LOGO_MAC_CLUT224 82 /* Macintosh Linux logo on m68k */ 83 if (MACH_IS_MAC) 84 logo = &logo_mac_clut224; 85 #endif 86 #ifdef CONFIG_LOGO_PARISC_CLUT224 87 /* PA-RISC Linux logo */ 88 logo = &logo_parisc_clut224; 89 #endif 90 #ifdef CONFIG_LOGO_SGI_CLUT224 91 /* SGI Linux logo on MIPS/MIPS64 */ 92 logo = &logo_sgi_clut224; 93 #endif 94 #ifdef CONFIG_LOGO_SUN_CLUT224 95 /* Sun Linux logo */ 96 logo = &logo_sun_clut224; 97 #endif 98 #ifdef CONFIG_LOGO_SUPERH_CLUT224 99 /* SuperH Linux logo */ 100 logo = &logo_superh_clut224; 101 #endif 102 } 103 return logo; 104 } 105 EXPORT_SYMBOL_GPL(fb_find_logo); 106