tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_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 */
43const 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}
105EXPORT_SYMBOL_GPL(fb_find_logo);