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watchdog
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octeon-wdt-nmi.S

octeon-wdt-nmi.S 1.3 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) 2007 Cavium Networks
    7. 

  7.  */
    8. 

  8. #include <asm/asm.h>
    9. 

  9. #include <asm/regdef.h>
    10. 

  10. 

  11. #define SAVE_REG(r)	sd $r, -32768+6912-(32-r)*8($0)
    12. 

  12. 

  13.         NESTED(octeon_wdt_nmi_stage2, 0, sp)
    14. 

  14. 	.set 	push
    15. 

  15. 	.set 	noreorder
    16. 

  16. 	.set 	noat
    17. 

  17. 	/* Save all registers to the top CVMSEG. This shouldn't
    18. 

  18. 	 * corrupt any state used by the kernel. Also all registers
    19. 

  19. 	 * should have the value right before the NMI. */
    20. 

  20. 	SAVE_REG(0)
    21. 

  21. 	SAVE_REG(1)
    22. 

  22. 	SAVE_REG(2)
    23. 

  23. 	SAVE_REG(3)
    24. 

  24. 	SAVE_REG(4)
    25. 

  25. 	SAVE_REG(5)
    26. 

  26. 	SAVE_REG(6)
    27. 

  27. 	SAVE_REG(7)
    28. 

  28. 	SAVE_REG(8)
    29. 

  29. 	SAVE_REG(9)
    30. 

  30. 	SAVE_REG(10)
    31. 

  31. 	SAVE_REG(11)
    32. 

  32. 	SAVE_REG(12)
    33. 

  33. 	SAVE_REG(13)
    34. 

  34. 	SAVE_REG(14)
    35. 

  35. 	SAVE_REG(15)
    36. 

  36. 	SAVE_REG(16)
    37. 

  37. 	SAVE_REG(17)
    38. 

  38. 	SAVE_REG(18)
    39. 

  39. 	SAVE_REG(19)
    40. 

  40. 	SAVE_REG(20)
    41. 

  41. 	SAVE_REG(21)
    42. 

  42. 	SAVE_REG(22)
    43. 

  43. 	SAVE_REG(23)
    44. 

  44. 	SAVE_REG(24)
    45. 

  45. 	SAVE_REG(25)
    46. 

  46. 	SAVE_REG(26)
    47. 

  47. 	SAVE_REG(27)
    48. 

  48. 	SAVE_REG(28)
    49. 

  49. 	SAVE_REG(29)
    50. 

  50. 	SAVE_REG(30)
    51. 

  51. 	SAVE_REG(31)
    52. 

  52. 	/* Set the stack to begin right below the registers */
    53. 

  53. 	li	sp, -32768+6912-32*8
    54. 

  54. 	/* Load the address of the third stage handler */
    55. 

  55. 	dla	a0, octeon_wdt_nmi_stage3
    56. 

  56. 	/* Call the third stage handler */
    57. 

  57. 	jal	a0
    58. 

  58. 	/* a0 is the address of the saved registers */
    59. 

  59. 	 move	a0, sp
    60. 

  60. 	/* Loop forvever if we get here. */
    61. 

  61. 1:	b	1b
    62. 

  62. 	nop
    63. 

  63. 	.set pop
    64. 

  64. 	END(octeon_wdt_nmi_stage2)
    65. 

  65.