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imx.S

imx.S 2.2 KB
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  1. /* arch/arm/mach-imx/include/mach/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. #define IMX6Q_UART1_BASE_ADDR	0x02020000
    14. 

  14. #define IMX6Q_UART2_BASE_ADDR	0x021e8000
    15. 

  15. #define IMX6Q_UART3_BASE_ADDR	0x021ec000
    16. 

  16. #define IMX6Q_UART4_BASE_ADDR	0x021f0000
    17. 

  17. #define IMX6Q_UART5_BASE_ADDR	0x021f4000
    18. 

  18. 

  19. /*
    20. 

  20.  * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
    21. 

  21.  * of IMX6Q_UART##n##_BASE_ADDR.
    22. 

  22.  */
    23. 

  23. #define IMX6Q_UART_BASE_ADDR(n)	IMX6Q_UART##n##_BASE_ADDR
    24. 

  24. #define IMX6Q_UART_BASE(n)	IMX6Q_UART_BASE_ADDR(n)
    25. 

  25. #define IMX6Q_DEBUG_UART_BASE	IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
    26. 

  26. 

  27. #ifdef CONFIG_DEBUG_IMX1_UART
    28. 

  28. #define UART_PADDR	0x00206000
    29. 

  29. #elif defined (CONFIG_DEBUG_IMX25_UART)
    30. 

  30. #define UART_PADDR	0x43f90000
    31. 

  31. #elif defined (CONFIG_DEBUG_IMX21_IMX27_UART)
    32. 

  32. #define UART_PADDR	0x1000a000
    33. 

  33. #elif defined (CONFIG_DEBUG_IMX31_IMX35_UART)
    34. 

  34. #define UART_PADDR	0x43f90000
    35. 

  35. #elif defined (CONFIG_DEBUG_IMX51_UART)
    36. 

  36. #define UART_PADDR	0x73fbc000
    37. 

  37. #elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
    38. 

  38. #define UART_PADDR	0x53fbc000
    39. 

  39. #elif defined (CONFIG_DEBUG_IMX6Q_UART)
    40. 

  40. #define UART_PADDR	IMX6Q_DEBUG_UART_BASE
    41. 

  41. #endif
    42. 

  42. 

  43. /*
    44. 

  44.  * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to
    45. 

  45.  * stay sync with that.  It's hard to maintain, and should be fixed
    46. 

  46.  * globally for multi-platform build to use a fixed virtual address
    47. 

  47.  * for low-level debug uart port across platforms.
    48. 

  48.  */
    49. 

  49. #define IMX_IO_P2V(x)	(						\
    50. 

  50. 			(((x) & 0x80000000) >> 7) |			\
    51. 

  51. 			(0xf4000000 +					\
    52. 

  52. 			(((x) & 0x50000000) >> 6) +			\
    53. 

  53. 			(((x) & 0x0b000000) >> 4) +			\
    54. 

  54. 			(((x) & 0x000fffff))))
    55. 

  55. 

  56. #define UART_VADDR	IMX_IO_P2V(UART_PADDR)
    57. 

  57. 

  58. 		.macro	addruart, rp, rv, tmp
    59. 

  59. 		ldr	\rp, =UART_PADDR	@ physical
    60. 

  60. 		ldr	\rv, =UART_VADDR	@ virtual
    61. 

  61. 		.endm
    62. 

  62. 

  63. 		.macro	senduart,rd,rx
    64. 

  64. 		str	\rd, [\rx, #0x40]	@ TXDATA
    65. 

  65. 		.endm
    66. 

  66. 

  67. 		.macro	waituart,rd,rx
    68. 

  68. 		.endm
    69. 

  69. 

  70. 		.macro	busyuart,rd,rx
    71. 

  71. 1002:		ldr	\rd, [\rx, #0x98]	@ SR2
    72. 

  72. 		tst	\rd, #1 << 3		@ TXDC
    73. 

  73. 		beq	1002b			@ wait until transmit done
    74. 

  74. 		.endm
    75.