| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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_BLACKFIN_VGA16 |
| 67 | /* Blackfin processor logo */ |
| 68 | logo = &logo_blackfin_vga16; |
| 69 | #endif |
| 70 | #ifdef CONFIG_LOGO_SUPERH_VGA16 |
| 71 | /* SuperH Linux logo */ |
| 72 | logo = &logo_superh_vga16; |
| 73 | #endif |
| 74 | } |
| 75 | |
| 76 | if (depth >= 8) { |
| 77 | #ifdef CONFIG_LOGO_LINUX_CLUT224 |
| 78 | /* Generic Linux logo */ |
| 79 | logo = &logo_linux_clut224; |
| 80 | #endif |
| 81 | #ifdef CONFIG_LOGO_BLACKFIN_CLUT224 |
| 82 | /* Blackfin Linux logo */ |
| 83 | logo = &logo_blackfin_clut224; |
| 84 | #endif |
| 85 | #ifdef CONFIG_LOGO_DEC_CLUT224 |
| 86 | /* DEC Linux logo on MIPS/MIPS64 or ALPHA */ |
| 87 | logo = &logo_dec_clut224; |
| 88 | #endif |
| 89 | #ifdef CONFIG_LOGO_MAC_CLUT224 |
| 90 | /* Macintosh Linux logo on m68k */ |
| 91 | if (MACH_IS_MAC) |
| 92 | logo = &logo_mac_clut224; |
| 93 | #endif |
| 94 | #ifdef CONFIG_LOGO_PARISC_CLUT224 |
| 95 | /* PA-RISC Linux logo */ |
| 96 | logo = &logo_parisc_clut224; |
| 97 | #endif |
| 98 | #ifdef CONFIG_LOGO_SGI_CLUT224 |
| 99 | /* SGI Linux logo on MIPS/MIPS64 */ |
| 100 | logo = &logo_sgi_clut224; |
| 101 | #endif |
| 102 | #ifdef CONFIG_LOGO_SUN_CLUT224 |
| 103 | /* Sun Linux logo */ |
| 104 | logo = &logo_sun_clut224; |
| 105 | #endif |
| 106 | #ifdef CONFIG_LOGO_SUPERH_CLUT224 |
| 107 | /* SuperH Linux logo */ |
| 108 | logo = &logo_superh_clut224; |
| 109 | #endif |
| 110 | #ifdef CONFIG_LOGO_M32R_CLUT224 |
| 111 | /* M32R Linux logo */ |
| 112 | logo = &logo_m32r_clut224; |
| 113 | #endif |
| 114 | } |
| 115 | return logo; |
| 116 | } |
| 117 | EXPORT_SYMBOL_GPL(fb_find_logo); |