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android_kernel_...
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arch
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arm
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include
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debug
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icedcc.S

icedcc.S 1.4 KB
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  1. /* SPDX-License-Identifier: GPL-2.0-only */
    2. 

  2. /*
    3. 

  3.  *  arch/arm/include/debug/icedcc.S
    4. 

  4.  *
    5. 

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

  6.  */
    7. 

  7. 

  8. 		@@ debug using ARM EmbeddedICE DCC channel
    9. 

  9. 

  10. 		.macro	addruart, rp, rv, tmp
    11. 

  11. 		.endm
    12. 

  12. 

  13. #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7)
    14. 

  14. 

  15. 		.macro	senduart, rd, rx
    16. 

  16. 		mcr	p14, 0, \rd, c0, c5, 0
    17. 

  17. 		.endm
    18. 

  18. 

  19. 		.macro	busyuart, rd, rx
    20. 

  20. 1001:
    21. 

  21. 		mrc	p14, 0, \rx, c0, c1, 0
    22. 

  22. 		tst	\rx, #0x20000000
    23. 

  23. 		beq	1001b
    24. 

  24. 		.endm
    25. 

  25. 

  26. 		.macro	waituartcts, rd, rx
    27. 

  27. 		.endm
    28. 

  28. 

  29. 		.macro	waituarttxrdy, rd, rx
    30. 

  30. 		mov	\rd, #0x2000000
    31. 

  31. 1001:
    32. 

  32. 		subs	\rd, \rd, #1
    33. 

  33. 		bmi	1002f
    34. 

  34. 		mrc	p14, 0, \rx, c0, c1, 0
    35. 

  35. 		tst	\rx, #0x20000000
    36. 

  36. 		bne	1001b
    37. 

  37. 1002:
    38. 

  38. 		.endm
    39. 

  39. 

  40. #elif defined(CONFIG_CPU_XSCALE)
    41. 

  41. 

  42. 		.macro	senduart, rd, rx
    43. 

  43. 		mcr	p14, 0, \rd, c8, c0, 0
    44. 

  44. 		.endm
    45. 

  45. 

  46. 		.macro	busyuart, rd, rx
    47. 

  47. 1001:
    48. 

  48. 		mrc	p14, 0, \rx, c14, c0, 0
    49. 

  49. 		tst	\rx, #0x10000000
    50. 

  50. 		beq	1001b
    51. 

  51. 		.endm
    52. 

  52. 

  53. 		.macro	waituartcts, rd, rx
    54. 

  54. 		.endm
    55. 

  55. 

  56. 		.macro	waituarttxrdy, rd, rx
    57. 

  57. 		mov	\rd, #0x10000000
    58. 

  58. 1001:
    59. 

  59. 		subs	\rd, \rd, #1
    60. 

  60. 		bmi	1002f
    61. 

  61. 		mrc	p14, 0, \rx, c14, c0, 0
    62. 

  62. 		tst	\rx, #0x10000000
    63. 

  63. 		bne	1001b
    64. 

  64. 1002:
    65. 

  65. 		.endm
    66. 

  66. 

  67. #else
    68. 

  68. 

  69. 		.macro	senduart, rd, rx
    70. 

  70. 		mcr	p14, 0, \rd, c1, c0, 0
    71. 

  71. 		.endm
    72. 

  72. 

  73. 		.macro	busyuart, rd, rx
    74. 

  74. 1001:
    75. 

  75. 		mrc	p14, 0, \rx, c0, c0, 0
    76. 

  76. 		tst	\rx, #2
    77. 

  77. 		beq	1001b
    78. 

  78. 

  79. 		.endm
    80. 

  80. 

  81. 		.macro	waituartcts, rd, rx
    82. 

  82. 		.endm
    83. 

  83. 

  84. 		.macro	waituarttxrdy, rd, rx
    85. 

  85. 		mov	\rd, #0x2000000
    86. 

  86. 1001:
    87. 

  87. 		subs	\rd, \rd, #1
    88. 

  88. 		bmi	1002f
    89. 

  89. 		mrc	p14, 0, \rx, c0, c0, 0
    90. 

  90. 		tst	\rx, #2
    91. 

  91. 		bne	1001b
    92. 

  92. 1002:
    93. 

  93. 		.endm
    94. 

  94. 

  95. #endif	/* CONFIG_CPU_V6 */
    96.