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
20static bool nologo;
21module_param(nologo, bool, 0);
22MODULE_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
29static bool logos_freed;
30
31static int __init fb_logo_late_init(void)
32{
33	logos_freed = true;
34	return 0;
35}
36
37late_initcall(fb_logo_late_init);
38
39/* logo's are marked __initdata. Use __init_refok to tell
40 * modpost that it is intended that this function uses data
41 * marked __initdata.
42 */
43const struct linux_logo * __init_refok 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}
117EXPORT_SYMBOL_GPL(fb_find_logo);
118