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proc-arm9tdmi.S

proc-arm9tdmi.S 2.2 KB
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  1. /*
    2. 

  2.  *  linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
    3. 

  3.  *
    4. 

  4.  *  Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify
    7. 

  7.  * it under the terms of the GNU General Public License version 2 as
    8. 

  8.  * published by the Free Software Foundation.
    9. 

  9.  *
    10. 

  10.  */
    11. 

  11. #include <linux/linkage.h>
    12. 

  12. #include <linux/init.h>
    13. 

  13. #include <asm/assembler.h>
    14. 

  14. #include <asm/asm-offsets.h>
    15. 

  15. #include <asm/hwcap.h>
    16. 

  16. #include <asm/pgtable-hwdef.h>
    17. 

  17. #include <asm/pgtable.h>
    18. 

  18. #include <asm/ptrace.h>
    19. 

  19. 

  20. #include "proc-macros.S"
    21. 

  21. 

  22. 	.text
    23. 

  23. /*
    24. 

  24.  * cpu_arm9tdmi_proc_init()
    25. 

  25.  * cpu_arm9tdmi_do_idle()
    26. 

  26.  * cpu_arm9tdmi_dcache_clean_area()
    27. 

  27.  * cpu_arm9tdmi_switch_mm()
    28. 

  28.  *
    29. 

  29.  * These are not required.
    30. 

  30.  */
    31. 

  31. ENTRY(cpu_arm9tdmi_proc_init)
    32. 

  32. ENTRY(cpu_arm9tdmi_do_idle)
    33. 

  33. ENTRY(cpu_arm9tdmi_dcache_clean_area)
    34. 

  34. ENTRY(cpu_arm9tdmi_switch_mm)
    35. 

  35. 		mov	pc, lr
    36. 

  36. 

  37. /*
    38. 

  38.  * cpu_arm9tdmi_proc_fin()
    39. 

  39.  */
    40. 

  40. ENTRY(cpu_arm9tdmi_proc_fin)
    41. 

  41. 		mov	pc, lr
    42. 

  42. 

  43. /*
    44. 

  44.  * Function: cpu_arm9tdmi_reset(loc)
    45. 

  45.  * Params  : loc(r0)	address to jump to
    46. 

  46.  * Purpose : Sets up everything for a reset and jump to the location for soft reset.
    47. 

  47.  */
    48. 

  48. ENTRY(cpu_arm9tdmi_reset)
    49. 

  49. 		mov	pc, r0
    50. 

  50. 

  51. 		__CPUINIT
    52. 

  52. 

  53. 		.type	__arm9tdmi_setup, #function
    54. 

  54. __arm9tdmi_setup:
    55. 

  55. 		mov	pc, lr
    56. 

  56. 		.size	__arm9tdmi_setup, . - __arm9tdmi_setup
    57. 

  57. 

  58. 		__INITDATA
    59. 

  59. 

  60. 		@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
    61. 

  61. 		define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
    62. 

  62. 

  63. 		.section ".rodata"
    64. 

  64. 

  65. 		string	cpu_arch_name, "armv4t"
    66. 

  66. 		string	cpu_elf_name, "v4"
    67. 

  67. 		string	cpu_arm9tdmi_name, "ARM9TDMI"
    68. 

  68. 		string	cpu_p2001_name, "P2001"
    69. 

  69. 

  70. 		.align
    71. 

  71. 

  72. 		.section ".proc.info.init", #alloc, #execinstr
    73. 

  73. 

  74. .macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
    75. 

  75. 		.type	__\name\()_proc_info, #object
    76. 

  76. __\name\()_proc_info:
    77. 

  77. 		.long	\cpu_val
    78. 

  78. 		.long	\cpu_mask
    79. 

  79. 		.long	0
    80. 

  80. 		.long	0
    81. 

  81. 		b	__arm9tdmi_setup
    82. 

  82. 		.long	cpu_arch_name
    83. 

  83. 		.long	cpu_elf_name
    84. 

  84. 		.long	HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
    85. 

  85. 		.long	\cpu_name
    86. 

  86. 		.long	arm9tdmi_processor_functions
    87. 

  87. 		.long	0
    88. 

  88. 		.long	0
    89. 

  89. 		.long	v4_cache_fns
    90. 

  90. 		.size	__\name\()_proc_info, . - __\name\()_proc_info
    91. 

  91. .endm
    92. 

  92. 

  93. 	arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
    94. 

  94. 	arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
    95.