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amlogic-aml8...
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arch
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arm
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mach-footbridge
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cats-hw.c

cats-hw.c 1.9 KB
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  1. /*
    2. 

  2.  * linux/arch/arm/mach-footbridge/cats-hw.c
    3. 

  3.  *
    4. 

  4.  * CATS machine fixup
    5. 

  5.  *
    6. 

  6.  * Copyright (C) 1998, 1999 Russell King, Phil Blundell
    7. 

  7.  */
    8. 

  8. #include <linux/ioport.h>
    9. 

  9. #include <linux/kernel.h>
    10. 

  10. #include <linux/init.h>
    11. 

  11. #include <linux/screen_info.h>
    12. 

  12. #include <linux/io.h>
    13. 

  13. #include <linux/spinlock.h>
    14. 

  14. 

  15. #include <asm/hardware/dec21285.h>
    16. 

  16. #include <asm/mach-types.h>
    17. 

  17. #include <asm/setup.h>
    18. 

  18. 

  19. #include <asm/mach/arch.h>
    20. 

  20. 

  21. #include "common.h"
    22. 

  22. 

  23. #define CFG_PORT	0x370
    24. 

  24. #define INDEX_PORT	(CFG_PORT)
    25. 

  25. #define DATA_PORT	(CFG_PORT + 1)
    26. 

  26. 

  27. static int __init cats_hw_init(void)
    28. 

  28. {
    29. 

  29. 	if (machine_is_cats()) {
    30. 

  30. 		/* Set Aladdin to CONFIGURE mode */
    31. 

  31. 		outb(0x51, CFG_PORT);
    32. 

  32. 		outb(0x23, CFG_PORT);
    33. 

  33. 

  34. 		/* Select logical device 3 */
    35. 

  35. 		outb(0x07, INDEX_PORT);
    36. 

  36. 		outb(0x03, DATA_PORT);
    37. 

  37. 

  38. 		/* Set parallel port to DMA channel 3, ECP+EPP1.9, 
    39. 

  39. 		   enable EPP timeout */
    40. 

  40. 		outb(0x74, INDEX_PORT);
    41. 

  41. 		outb(0x03, DATA_PORT);
    42. 

  42. 	
    43. 

  43. 		outb(0xf0, INDEX_PORT);
    44. 

  44. 		outb(0x0f, DATA_PORT);
    45. 

  45. 

  46. 		outb(0xf1, INDEX_PORT);
    47. 

  47. 		outb(0x07, DATA_PORT);
    48. 

  48. 

  49. 		/* Select logical device 4 */
    50. 

  50. 		outb(0x07, INDEX_PORT);
    51. 

  51. 		outb(0x04, DATA_PORT);
    52. 

  52. 

  53. 		/* UART1 high speed mode */
    54. 

  54. 		outb(0xf0, INDEX_PORT);
    55. 

  55. 		outb(0x02, DATA_PORT);
    56. 

  56. 

  57. 		/* Select logical device 5 */
    58. 

  58. 		outb(0x07, INDEX_PORT);
    59. 

  59. 		outb(0x05, DATA_PORT);
    60. 

  60. 

  61. 		/* UART2 high speed mode */
    62. 

  62. 		outb(0xf0, INDEX_PORT);
    63. 

  63. 		outb(0x02, DATA_PORT);
    64. 

  64. 

  65. 		/* Set Aladdin to RUN mode */
    66. 

  66. 		outb(0xbb, CFG_PORT);
    67. 

  67. 	}
    68. 

  68. 

  69. 	return 0;
    70. 

  70. }
    71. 

  71. 

  72. __initcall(cats_hw_init);
    73. 

  73. 

  74. /*
    75. 

  75.  * CATS uses soft-reboot by default, since
    76. 

  76.  * hard reboots fail on early boards.
    77. 

  77.  */
    78. 

  78. static void __init
    79. 

  79. fixup_cats(struct machine_desc *desc, struct tag *tags,
    80. 

  80. 	   char **cmdline, struct meminfo *mi)
    81. 

  81. {
    82. 

  82. 	screen_info.orig_video_lines  = 25;
    83. 

  83. 	screen_info.orig_video_points = 16;
    84. 

  84. 	screen_info.orig_y = 24;
    85. 

  85. }
    86. 

  86. 

  87. MACHINE_START(CATS, "Chalice-CATS")
    88. 

  88. 	/* Maintainer: Philip Blundell */
    89. 

  89. 	.boot_params	= 0x00000100,
    90. 

  90. 	.soft_reboot	= 1,
    91. 

  91. 	.fixup		= fixup_cats,
    92. 

  92. 	.map_io		= footbridge_map_io,
    93. 

  93. 	.init_irq	= footbridge_init_irq,
    94. 

  94. 	.timer		= &isa_timer,
    95. 

  95. MACHINE_END
    96. 

  96.