/arch/arm/mach-footbridge/cats-hw.c

https://bitbucket.org/evzijst/gittest · C · 95 lines · 57 code · 18 blank · 20 comment · 1 complexity · a395cd35e75f1cd088c6f989fededf8d MD5 · raw file 

    

  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/tty.h>
    12. 

  12. 

  13. #include <asm/hardware/dec21285.h>
    14. 

  14. #include <asm/io.h>
    15. 

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

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

  17. 

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

  19. 

  20. #include "common.h"
    21. 

  21. 

  22. #define CFG_PORT	0x370
    23. 

  23. #define INDEX_PORT	(CFG_PORT)
    24. 

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

  25. 

  26. static int __init cats_hw_init(void)
    27. 

  27. {
    28. 

  28. 	if (machine_is_cats()) {
    29. 

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

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

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

  32. 

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

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

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

  36. 

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

  38. 		   enable EPP timeout */
    39. 

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

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

  41. 	
    42. 

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

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

  44. 

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

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

  47. 

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

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

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

  51. 

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

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

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

  55. 

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

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

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

  59. 

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

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

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

  63. 

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

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

  66. 	}
    67. 

  67. 

  68. 	return 0;
    69. 

  69. }
    70. 

  70. 

  71. __initcall(cats_hw_init);
    72. 

  72. 

  73. /*
    74. 

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

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

  76.  */
    77. 

  77. static void __init
    78. 

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

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

  80. {
    81. 

  81. 	ORIG_VIDEO_LINES  = 25;
    82. 

  82. 	ORIG_VIDEO_POINTS = 16;
    83. 

  83. 	ORIG_Y = 24;
    84. 

  84. }
    85. 

  85. 

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

  87. 	MAINTAINER("Philip Blundell")
    88. 

  88. 	BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
    89. 

  89. 	BOOT_PARAMS(0x00000100)
    90. 

  90. 	SOFT_REBOOT
    91. 

  91. 	FIXUP(fixup_cats)
    92. 

  92. 	MAPIO(footbridge_map_io)
    93. 

  93. 	INITIRQ(footbridge_init_irq)
    94. 

  94. 	.timer		= &isa_timer,
    95. 

  95. MACHINE_END
    96.