drivers/video/logo/logo.c

   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 extern const struct linux_logo logo_linux_mono;
  25 extern const struct linux_logo logo_linux_vga16;
  26 extern const struct linux_logo logo_linux_clut224;
  27 extern const struct linux_logo logo_dec_clut224;
  28 extern const struct linux_logo logo_mac_clut224;
  29 extern const struct linux_logo logo_parisc_clut224;
  30 extern const struct linux_logo logo_sgi_clut224;
  31 extern const struct linux_logo logo_sun_clut224;
  32 extern const struct linux_logo logo_superh_mono;
  33 extern const struct linux_logo logo_superh_vga16;
  34 extern const struct linux_logo logo_superh_clut224;
  35 extern const struct linux_logo logo_m32r_clut224;
  36
  37 static int nologo;
  38 module_param(nologo, bool, 0);
  39 MODULE_PARM_DESC(nologo, "Disables startup logo");
  40
  41 /* logo's are marked __initdata. Use __init_refok to tell
  42  * modpost that it is intended that this function uses data
  43  * marked __initdata.
  44  */
  45 const struct linux_logo * __init_refok fb_find_logo(int depth)
  46 {
  47         const struct linux_logo *logo = NULL;
  48
  49         if (nologo)
  50                 return NULL;
  51
  52         if (depth >= 1) {
  53 #ifdef CONFIG_LOGO_LINUX_MONO
  54                 /* Generic Linux logo */
  55                 logo = &logo_linux_mono;
  56 #endif
  57 #ifdef CONFIG_LOGO_SUPERH_MONO
  58                 /* SuperH Linux logo */
  59                 logo = &logo_superh_mono;
  60 #endif
  61         }
  62
  63         if (depth >= 4) {
  64 #ifdef CONFIG_LOGO_LINUX_VGA16
  65                 /* Generic Linux logo */
  66                 logo = &logo_linux_vga16;
  67 #endif
  68 #ifdef CONFIG_LOGO_SUPERH_VGA16
  69                 /* SuperH Linux logo */
  70                 logo = &logo_superh_vga16;
  71 #endif
  72         }
  73
  74         if (depth >= 8) {
  75 #ifdef CONFIG_LOGO_LINUX_CLUT224
  76                 /* Generic Linux logo */
  77                 logo = &logo_linux_clut224;
  78 #endif
  79 #ifdef CONFIG_LOGO_DEC_CLUT224
  80                 /* DEC Linux logo on MIPS/MIPS64 or ALPHA */
  81 #ifndef CONFIG_ALPHA
  82                 if (mips_machgroup == MACH_GROUP_DEC)
  83 #endif
  84                         logo = &logo_dec_clut224;
  85 #endif
  86 #ifdef CONFIG_LOGO_MAC_CLUT224
  87                 /* Macintosh Linux logo on m68k */
  88                 if (MACH_IS_MAC)
  89                         logo = &logo_mac_clut224;
  90 #endif
  91 #ifdef CONFIG_LOGO_PARISC_CLUT224
  92                 /* PA-RISC Linux logo */
  93                 logo = &logo_parisc_clut224;
  94 #endif
  95 #ifdef CONFIG_LOGO_SGI_CLUT224
  96                 /* SGI Linux logo on MIPS/MIPS64 and VISWS */
  97 #ifndef CONFIG_X86_VISWS
  98                 if (mips_machgroup == MACH_GROUP_SGI)
  99 #endif
 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);