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aarch64
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aml_helpers.S

aml_helpers.S 2.6 KB
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  1. /*
    2. 

  2.  * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
    3. 

  3.  *
    4. 

  4.  * SPDX-License-Identifier: BSD-3-Clause
    5. 

  5.  */
    6. 

  6. 

  7. #include <arch.h>
    8. 

  8. #include <asm_macros.S>
    9. 

  9. #include <assert_macros.S>
    10. 

  10. #include <platform_def.h>
    11. 

  11. 

  12. 	.globl	plat_crash_console_flush
    13. 

  13. 	.globl	plat_crash_console_init
    14. 

  14. 	.globl	plat_crash_console_putc
    15. 

  15. 	.globl	platform_mem_init
    16. 

  16. 	.globl	plat_is_my_cpu_primary
    17. 

  17. 	.globl	plat_my_core_pos
    18. 

  18. 	.globl	plat_reset_handler
    19. 

  19. 	.globl	plat_calc_core_pos
    20. 

  20. 

  21. 	/* -----------------------------------------------------
    22. 

  22. 	 * unsigned int plat_my_core_pos(void);
    23. 

  23. 	 * -----------------------------------------------------
    24. 

  24. 	 */
    25. 

  25. func plat_my_core_pos
    26. 

  26. 	mrs	x0, mpidr_el1
    27. 

  27. 	b	plat_calc_core_pos
    28. 

  28. endfunc plat_my_core_pos
    29. 

  29. 

  30. 	/* -----------------------------------------------------
    31. 

  31. 	 *  unsigned int plat_calc_core_pos(u_register_t mpidr);
    32. 

  32. 	 * -----------------------------------------------------
    33. 

  33. 	 */
    34. 

  34. func plat_calc_core_pos
    35. 

  35. 	and	x0, x0, #MPIDR_CPU_MASK
    36. 

  36. 	ret
    37. 

  37. endfunc plat_calc_core_pos
    38. 

  38. 

  39. 	/* -----------------------------------------------------
    40. 

  40. 	 * unsigned int plat_is_my_cpu_primary(void);
    41. 

  41. 	 * -----------------------------------------------------
    42. 

  42. 	 */
    43. 

  43. func plat_is_my_cpu_primary
    44. 

  44. 	mrs	x0, mpidr_el1
    45. 

  45. 	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
    46. 

  46. 	cmp	x0, #AML_PRIMARY_CPU
    47. 

  47. 	cset	w0, eq
    48. 

  48. 	ret
    49. 

  49. endfunc plat_is_my_cpu_primary
    50. 

  50. 

  51. 	/* ---------------------------------------------
    52. 

  52. 	 * void platform_mem_init(void);
    53. 

  53. 	 * ---------------------------------------------
    54. 

  54. 	 */
    55. 

  55. func platform_mem_init
    56. 

  56. 	ret
    57. 

  57. endfunc platform_mem_init
    58. 

  58. 

  59. 	/* ---------------------------------------------
    60. 

  60. 	 * int plat_crash_console_init(void)
    61. 

  61. 	 * ---------------------------------------------
    62. 

  62. 	 */
    63. 

  63. func plat_crash_console_init
    64. 

  64. 	mov_imm	x0, AML_UART0_AO_BASE
    65. 

  65. 	mov_imm	x1, AML_UART0_AO_CLK_IN_HZ
    66. 

  66. 	mov_imm	x2, AML_UART_BAUDRATE
    67. 

  67. 	b	console_meson_init
    68. 

  68. endfunc plat_crash_console_init
    69. 

  69. 

  70. 	/* ---------------------------------------------
    71. 

  71. 	 * int plat_crash_console_putc(int c)
    72. 

  72. 	 * Clobber list : x1, x2
    73. 

  73. 	 * ---------------------------------------------
    74. 

  74. 	 */
    75. 

  75. func plat_crash_console_putc
    76. 

  76. 	mov_imm	x1, AML_UART0_AO_BASE
    77. 

  77. 	b	console_meson_core_putc
    78. 

  78. endfunc plat_crash_console_putc
    79. 

  79. 

  80. 	/* ---------------------------------------------
    81. 

  81. 	 * void plat_crash_console_flush()
    82. 

  82. 	 * Out : void.
    83. 

  83. 	 * Clobber list : x0, x1
    84. 

  84. 	 * ---------------------------------------------
    85. 

  85. 	 */
    86. 

  86. func plat_crash_console_flush
    87. 

  87. 	mov_imm	x0, AML_UART0_AO_BASE
    88. 

  88. 	b	console_meson_core_flush
    89. 

  89. endfunc plat_crash_console_flush
    90. 

  90. 

  91. 	/* ---------------------------------------------
    92. 

  92. 	 * void plat_reset_handler(void);
    93. 

  93. 	 * ---------------------------------------------
    94. 

  94. 	 */
    95. 

  95. func plat_reset_handler
    96. 

  96. 	ret
    97. 

  97. endfunc plat_reset_handler
    98.