logo.c 2.6 KB

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  1. /*
  2. * Linux logo to be displayed on boot
  3. *
  4. * Copyright (C) 1996 Larry Ewing (lewing@isc.tamu.edu)
  5. * Copyright (C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  6. * Copyright (C) 2001 Greg Banks <gnb@alphalink.com.au>
  7. * Copyright (C) 2001 Jan-Benedict Glaw <jbglaw@lug-owl.de>
  8. * Copyright (C) 2003 Geert Uytterhoeven <geert@linux-m68k.org>
  9. */
  10. #include <linux/linux_logo.h>
  11. #include <linux/stddef.h>
  12. #include <linux/module.h>
  13. #ifdef CONFIG_M68K
  14. #include <asm/setup.h>
  15. #endif
  16. static bool nologo;
  17. module_param(nologo, bool, 0);
  18. MODULE_PARM_DESC(nologo, "Disables startup logo");
  19. /*
  20. * Logos are located in the initdata, and will be freed in kernel_init.
  21. * Use late_init to mark the logos as freed to prevent any further use.
  22. */
  23. static bool logos_freed;
  24. static int __init fb_logo_late_init(void)
  25. {
  26. logos_freed = true;
  27. return 0;
  28. }
  29. late_initcall(fb_logo_late_init);
  30. /* logo's are marked __initdata. Use __init_refok to tell
  31. * modpost that it is intended that this function uses data
  32. * marked __initdata.
  33. */
  34. const struct linux_logo * __init_refok fb_find_logo(int depth)
  35. {
  36. const struct linux_logo *logo = NULL;
  37. if (nologo || logos_freed)
  38. return NULL;
  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. if (depth >= 4) {
  50. #ifdef CONFIG_LOGO_LINUX_VGA16
  51. /* Generic Linux logo */
  52. logo = &logo_linux_vga16;
  53. #endif
  54. #ifdef CONFIG_LOGO_BLACKFIN_VGA16
  55. /* Blackfin processor logo */
  56. logo = &logo_blackfin_vga16;
  57. #endif
  58. #ifdef CONFIG_LOGO_SUPERH_VGA16
  59. /* SuperH Linux logo */
  60. logo = &logo_superh_vga16;
  61. #endif
  62. }
  63. if (depth >= 8) {
  64. #ifdef CONFIG_LOGO_LINUX_CLUT224
  65. /* Generic Linux logo */
  66. logo = &logo_linux_clut224;
  67. #endif
  68. #ifdef CONFIG_LOGO_BLACKFIN_CLUT224
  69. /* Blackfin Linux logo */
  70. logo = &logo_blackfin_clut224;
  71. #endif
  72. #ifdef CONFIG_LOGO_DEC_CLUT224
  73. /* DEC Linux logo on MIPS/MIPS64 or ALPHA */
  74. logo = &logo_dec_clut224;
  75. #endif
  76. #ifdef CONFIG_LOGO_MAC_CLUT224
  77. /* Macintosh Linux logo on m68k */
  78. if (MACH_IS_MAC)
  79. logo = &logo_mac_clut224;
  80. #endif
  81. #ifdef CONFIG_LOGO_PARISC_CLUT224
  82. /* PA-RISC Linux logo */
  83. logo = &logo_parisc_clut224;
  84. #endif
  85. #ifdef CONFIG_LOGO_SGI_CLUT224
  86. /* SGI Linux logo on MIPS/MIPS64 */
  87. logo = &logo_sgi_clut224;
  88. #endif
  89. #ifdef CONFIG_LOGO_SUN_CLUT224
  90. /* Sun Linux logo */
  91. logo = &logo_sun_clut224;
  92. #endif
  93. #ifdef CONFIG_LOGO_SUPERH_CLUT224
  94. /* SuperH Linux logo */
  95. logo = &logo_superh_clut224;
  96. #endif
  97. #ifdef CONFIG_LOGO_M32R_CLUT224
  98. /* M32R Linux logo */
  99. logo = &logo_m32r_clut224;
  100. #endif
  101. }
  102. return logo;
  103. }
  104. EXPORT_SYMBOL_GPL(fb_find_logo);