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arch
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mips
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asm
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mach-loongson64
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kernel-entry-init.h

kernel-entry-init.h 1.4 KB
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  1. /*
    2. 

  2.  * This file is subject to the terms and conditions of the GNU General Public
    3. 

  3.  * License.  See the file "COPYING" in the main directory of this archive
    4. 

  4.  * for more details.
    5. 

  5.  *
    6. 

  6.  * Copyright (C) 2005 Embedded Alley Solutions, Inc
    7. 

  7.  * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
    8. 

  8.  * Copyright (C) 2009 Jiajie Chen (chenjiajie@cse.buaa.edu.cn)
    9. 

  9.  * Copyright (C) 2012 Huacai Chen (chenhc@lemote.com)
    10. 

  10.  */
    11. 

  11. #ifndef __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
    12. 

  12. #define __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H
    13. 

  13. 

  14. /*
    15. 

  15.  * Override macros used in arch/mips/kernel/head.S.
    16. 

  16.  */
    17. 

  17. 	.macro	kernel_entry_setup
    18. 

  18. #ifdef CONFIG_CPU_LOONGSON3
    19. 

  19. 	.set	push
    20. 

  20. 	.set	mips64
    21. 

  21. 	/* Set LPA on LOONGSON3 config3 */
    22. 

  22. 	mfc0	t0, $16, 3
    23. 

  23. 	or	t0, (0x1 << 7)
    24. 

  24. 	mtc0	t0, $16, 3
    25. 

  25. 	/* Set ELPA on LOONGSON3 pagegrain */
    26. 

  26. 	mfc0	t0, $5, 1
    27. 

  27. 	or	t0, (0x1 << 29)
    28. 

  28. 	mtc0	t0, $5, 1
    29. 

  29. #ifdef CONFIG_LOONGSON3_ENHANCEMENT
    30. 

  30. 	/* Enable STFill Buffer */
    31. 

  31. 	mfc0	t0, $16, 6
    32. 

  32. 	or	t0, 0x100
    33. 

  33. 	mtc0	t0, $16, 6
    34. 

  34. #endif
    35. 

  35. 	_ehb
    36. 

  36. 	.set	pop
    37. 

  37. #endif
    38. 

  38. 	.endm
    39. 

  39. 

  40. /*
    41. 

  41.  * Do SMP slave processor setup.
    42. 

  42.  */
    43. 

  43. 	.macro	smp_slave_setup
    44. 

  44. #ifdef CONFIG_CPU_LOONGSON3
    45. 

  45. 	.set	push
    46. 

  46. 	.set	mips64
    47. 

  47. 	/* Set LPA on LOONGSON3 config3 */
    48. 

  48. 	mfc0	t0, $16, 3
    49. 

  49. 	or	t0, (0x1 << 7)
    50. 

  50. 	mtc0	t0, $16, 3
    51. 

  51. 	/* Set ELPA on LOONGSON3 pagegrain */
    52. 

  52. 	mfc0	t0, $5, 1
    53. 

  53. 	or	t0, (0x1 << 29)
    54. 

  54. 	mtc0	t0, $5, 1
    55. 

  55. #ifdef CONFIG_LOONGSON3_ENHANCEMENT
    56. 

  56. 	/* Enable STFill Buffer */
    57. 

  57. 	mfc0	t0, $16, 6
    58. 

  58. 	or	t0, 0x100
    59. 

  59. 	mtc0	t0, $16, 6
    60. 

  60. #endif
    61. 

  61. 	_ehb
    62. 

  62. 	.set	pop
    63. 

  63. #endif
    64. 

  64. 	.endm
    65. 

  65. 

  66. #endif /* __ASM_MACH_LOONGSON64_KERNEL_ENTRY_H */
    67. 

  67.