xref: /linux/drivers/video/logo/logo.c (revision 4413e16d9d21673bb5048a2e542f1aaa00015c2e)
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 #ifdef CONFIG_MIPS
21 #include <asm/bootinfo.h>
22 #endif
23 
24 static bool nologo;
25 module_param(nologo, bool, 0);
26 MODULE_PARM_DESC(nologo, "Disables startup logo");
27 
28 /* logo's are marked __initdata. Use __init_refok to tell
29  * modpost that it is intended that this function uses data
30  * marked __initdata.
31  */
32 const struct linux_logo * __init_refok fb_find_logo(int depth)
33 {
34 	const struct linux_logo *logo = NULL;
35 
36 	if (nologo)
37 		return NULL;
38 
39 	if (depth >= 1) {
40 #ifdef CONFIG_LOGO_LINUX_MONO
41 		/* Generic Linux logo */
42 		logo = &logo_linux_mono;
43 #endif
44 #ifdef CONFIG_LOGO_SUPERH_MONO
45 		/* SuperH Linux logo */
46 		logo = &logo_superh_mono;
47 #endif
48 	}
49 
50 	if (depth >= 4) {
51 #ifdef CONFIG_LOGO_LINUX_VGA16
52 		/* Generic Linux logo */
53 		logo = &logo_linux_vga16;
54 #endif
55 #ifdef CONFIG_LOGO_BLACKFIN_VGA16
56 		/* Blackfin processor logo */
57 		logo = &logo_blackfin_vga16;
58 #endif
59 #ifdef CONFIG_LOGO_SUPERH_VGA16
60 		/* SuperH Linux logo */
61 		logo = &logo_superh_vga16;
62 #endif
63 	}
64 
65 	if (depth >= 8) {
66 #ifdef CONFIG_LOGO_LINUX_CLUT224
67 		/* Generic Linux logo */
68 		logo = &logo_linux_clut224;
69 #endif
70 #ifdef CONFIG_LOGO_BLACKFIN_CLUT224
71 		/* Blackfin Linux logo */
72 		logo = &logo_blackfin_clut224;
73 #endif
74 #ifdef CONFIG_LOGO_DEC_CLUT224
75 		/* DEC Linux logo on MIPS/MIPS64 or ALPHA */
76 		logo = &logo_dec_clut224;
77 #endif
78 #ifdef CONFIG_LOGO_MAC_CLUT224
79 		/* Macintosh Linux logo on m68k */
80 		if (MACH_IS_MAC)
81 			logo = &logo_mac_clut224;
82 #endif
83 #ifdef CONFIG_LOGO_PARISC_CLUT224
84 		/* PA-RISC Linux logo */
85 		logo = &logo_parisc_clut224;
86 #endif
87 #ifdef CONFIG_LOGO_SGI_CLUT224
88 		/* SGI Linux logo on MIPS/MIPS64 and VISWS */
89 		logo = &logo_sgi_clut224;
90 #endif
91 #ifdef CONFIG_LOGO_SUN_CLUT224
92 		/* Sun Linux logo */
93 		logo = &logo_sun_clut224;
94 #endif
95 #ifdef CONFIG_LOGO_SUPERH_CLUT224
96 		/* SuperH Linux logo */
97 		logo = &logo_superh_clut224;
98 #endif
99 #ifdef CONFIG_LOGO_M32R_CLUT224
100 		/* M32R Linux logo */
101 		logo = &logo_m32r_clut224;
102 #endif
103 	}
104 	return logo;
105 }
106 EXPORT_SYMBOL_GPL(fb_find_logo);
107