[deliverable/linux.git] / drivers / video / logo / logo.c


/*
 *  Linux logo to be displayed on boot
 *
 *  Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)
 *  Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 *  Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>
 *  Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>
 *  Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>
 */

#include <linux/linux_logo.h>
#include <linux/stddef.h>
#include <linux/module.h>

#ifdef CONFIG_M68K
#include <asm/setup.h>
#endif

static bool nologo;
module_param(nologo, bool, 0);
MODULE_PARM_DESC(nologo, "Disables startup logo");

/*
 * Logos are located in the initdata, and will be freed in kernel_init.
 * Use late_init to mark the logos as freed to prevent any further use.
 */

static bool logos_freed;

static int __init fb_logo_late_init(void)
{
	logos_freed = true;
	return 0;
}

late_initcall(fb_logo_late_init);

/* logo's are marked __initdata. Use __init_refok to tell
 * modpost that it is intended that this function uses data
 * marked __initdata.
 */
const struct linux_logo * __init_refok fb_find_logo(int depth)
{
	const struct linux_logo *logo = NULL;

	if (nologo || logos_freed)
		return NULL;

	if (depth >= 1) {
#ifdef CONFIG_LOGO_LINUX_MONO
		/* Generic Linux logo */
		logo = &logo_linux_mono;
#endif
#ifdef CONFIG_LOGO_SUPERH_MONO
		/* SuperH Linux logo */
		logo = &logo_superh_mono;
#endif
	}
	
	if (depth >= 4) {
#ifdef CONFIG_LOGO_LINUX_VGA16
		/* Generic Linux logo */
		logo = &logo_linux_vga16;
#endif
#ifdef CONFIG_LOGO_BLACKFIN_VGA16
		/* Blackfin processor logo */
		logo = &logo_blackfin_vga16;
#endif
#ifdef CONFIG_LOGO_SUPERH_VGA16
		/* SuperH Linux logo */
		logo = &logo_superh_vga16;
#endif
	}
	
	if (depth >= 8) {
#ifdef CONFIG_LOGO_LINUX_CLUT224
		/* Generic Linux logo */
		logo = &logo_linux_clut224;
#endif
#ifdef CONFIG_LOGO_BLACKFIN_CLUT224
		/* Blackfin Linux logo */
		logo = &logo_blackfin_clut224;
#endif
#ifdef CONFIG_LOGO_DEC_CLUT224
		/* DEC Linux logo on MIPS/MIPS64 or ALPHA */
		logo = &logo_dec_clut224;
#endif
#ifdef CONFIG_LOGO_MAC_CLUT224
		/* Macintosh Linux logo on m68k */
		if (MACH_IS_MAC)
			logo = &logo_mac_clut224;
#endif
#ifdef CONFIG_LOGO_PARISC_CLUT224
		/* PA-RISC Linux logo */
		logo = &logo_parisc_clut224;
#endif
#ifdef CONFIG_LOGO_SGI_CLUT224
		/* SGI Linux logo on MIPS/MIPS64 */
		logo = &logo_sgi_clut224;
#endif
#ifdef CONFIG_LOGO_SUN_CLUT224
		/* Sun Linux logo */
		logo = &logo_sun_clut224;
#endif
#ifdef CONFIG_LOGO_SUPERH_CLUT224
		/* SuperH Linux logo */
		logo = &logo_superh_clut224;
#endif
#ifdef CONFIG_LOGO_M32R_CLUT224
		/* M32R Linux logo */
		logo = &logo_m32r_clut224;
#endif
	}
	return logo;
}
EXPORT_SYMBOL_GPL(fb_find_logo);
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	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
90ab5ee9	20	static bool nologo;
accaa24c RD	21	module_param(nologo, bool, 0);
	22	MODULE_PARM_DESC(nologo, "Disables startup logo");
	23
92b004d1 TV	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(fb_logo_late_init);
	38
92cc6b07 SR	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	*/
	43	const struct linux_logo * __init_refok fb_find_logo(int depth)
1da177e4 LT	44	{
	45	const struct linux_logo *logo = NULL;
	46
92b004d1	47	if (nologo \|\| logos_freed)
accaa24c RD	48	return NULL;
accaa24c RD	49
1da177e4 LT	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
122a881c RG	66	#ifdef CONFIG_LOGO_BLACKFIN_VGA16
	67	/* Blackfin processor logo */
	68	logo = &logo_blackfin_vga16;
	69	#endif
1da177e4 LT	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
122a881c RG	81	#ifdef CONFIG_LOGO_BLACKFIN_CLUT224
	82	/* Blackfin Linux logo */
	83	logo = &logo_blackfin_clut224;
	84	#endif
1da177e4 LT	85	#ifdef CONFIG_LOGO_DEC_CLUT224
1da177e4 LT	86	/* DEC Linux logo on MIPS/MIPS64 or ALPHA */
41702d9a	87	logo = &logo_dec_clut224;
1da177e4 LT	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
c5f9ee3d	99	/* SGI Linux logo on MIPS/MIPS64 */
41702d9a	100	logo = &logo_sgi_clut224;
1da177e4 LT	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;
316240f6 HT	109	#endif
	110	#ifdef CONFIG_LOGO_M32R_CLUT224
	111	/* M32R Linux logo */
	112	logo = &logo_m32r_clut224;
1da177e4 LT	113	#endif
	114	}
	115	return logo;
	116	}
	117	EXPORT_SYMBOL_GPL(fb_find_logo);