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asm-arm
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arch-ebsa285
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debug-macro.S

debug-macro.S 1.4 KB
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  1. /* linux/include/asm-arm/arch-ebsa285/debug-macro.S
    2. 

  2.  *
    3. 

  3.  * Debugging macro include header
    4. 

  4.  *
    5. 

  5.  *  Copyright (C) 1994-1999 Russell King
    6. 

  6.  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
    7. 

  7.  *
    8. 

  8.  * This program is free software; you can redistribute it and/or modify
    9. 

  9.  * it under the terms of the GNU General Public License version 2 as
    10. 

  10.  * published by the Free Software Foundation.
    11. 

  11.  *
    12. 

  12. */
    13. 

  13. 

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

  15. 

  16. #ifndef CONFIG_DEBUG_DC21285_PORT
    17. 

  17. 	/* For NetWinder debugging */
    18. 

  18. 		.macro	addruart,rx
    19. 

  19. 		mrc	p15, 0, \rx, c1, c0
    20. 

  20. 		tst	\rx, #1			@ MMU enabled?
    21. 

  21. 		moveq	\rx, #0x7c000000	@ physical
    22. 

  22. 		movne	\rx, #0xff000000	@ virtual
    23. 

  23. 		orr	\rx, \rx, #0x000003f8
    24. 

  24. 		.endm
    25. 

  25. 

  26. 		.macro	senduart,rd,rx
    27. 

  27. 		strb	\rd, [\rx]
    28. 

  28. 		.endm
    29. 

  29. 

  30. 		.macro	busyuart,rd,rx
    31. 

  31. 1002:		ldrb	\rd, [\rx, #0x5]
    32. 

  32. 		and	\rd, \rd, #0x60
    33. 

  33. 		teq	\rd, #0x60
    34. 

  34. 		bne	1002b
    35. 

  35. 		.endm
    36. 

  36. 

  37. 		.macro	waituart,rd,rx
    38. 

  38. 1001:		ldrb	\rd, [\rx, #0x6]
    39. 

  39. 		tst	\rd, #0x10
    40. 

  40. 		beq	1001b
    41. 

  41. 		.endm
    42. 

  42. #else
    43. 

  43. 	/* For EBSA285 debugging */
    44. 

  44. 		.equ	dc21285_high, ARMCSR_BASE & 0xff000000
    45. 

  45. 		.equ	dc21285_low,  ARMCSR_BASE & 0x00ffffff
    46. 

  46. 

  47. 		.macro	addruart,rx
    48. 

  48. 		mrc	p15, 0, \rx, c1, c0
    49. 

  49. 		tst	\rx, #1			@ MMU enabled?
    50. 

  50. 		moveq	\rx, #0x42000000
    51. 

  51. 		movne	\rx, #dc21285_high
    52. 

  52. 		.if	dc21285_low
    53. 

  53. 		orrne	\rx, \rx, #dc21285_low
    54. 

  54. 		.endif
    55. 

  55. 		.endm
    56. 

  56. 

  57. 		.macro	senduart,rd,rx
    58. 

  58. 		str	\rd, [\rx, #0x160]	@ UARTDR
    59. 

  59. 		.endm
    60. 

  60. 

  61. 		.macro	busyuart,rd,rx
    62. 

  62. 1001:		ldr	\rd, [\rx, #0x178]	@ UARTFLG
    63. 

  63. 		tst	\rd, #1 << 3
    64. 

  64. 		bne	1001b
    65. 

  65. 		.endm
    66. 

  66. 

  67. 		.macro	waituart,rd,rx
    68. 

  68. 		.endm
    69. 

  69. #endif
    70.