at91_rstc.h 1.9 KB

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  1. /*
  2. * arch/arm/mach-at91/include/mach/at91_rstc.h
  3. *
  4. * Copyright (C) 2007 Andrew Victor
  5. * Copyright (C) 2007 Atmel Corporation.
  6. *
  7. * Reset Controller (RSTC) - System peripherals regsters.
  8. * Based on AT91SAM9261 datasheet revision D.
  9. *
  10. * This program is free software; you can redistribute it and/or modify
  11. * it under the terms of the GNU General Public License as published by
  12. * the Free Software Foundation; either version 2 of the License, or
  13. * (at your option) any later version.
  14. */
  15. #ifndef AT91_RSTC_H
  16. #define AT91_RSTC_H
  17. #ifndef __ASSEMBLY__
  18. extern void __iomem *at91_rstc_base;
  19. #define at91_rstc_read(field) \
  20. __raw_readl(at91_rstc_base + field)
  21. #define at91_rstc_write(field, value) \
  22. __raw_writel(value, at91_rstc_base + field);
  23. #else
  24. .extern at91_rstc_base
  25. #endif
  26. #define AT91_RSTC_CR 0x00 /* Reset Controller Control Register */
  27. #define AT91_RSTC_PROCRST (1 << 0) /* Processor Reset */
  28. #define AT91_RSTC_PERRST (1 << 2) /* Peripheral Reset */
  29. #define AT91_RSTC_EXTRST (1 << 3) /* External Reset */
  30. #define AT91_RSTC_KEY (0xa5 << 24) /* KEY Password */
  31. #define AT91_RSTC_SR 0x04 /* Reset Controller Status Register */
  32. #define AT91_RSTC_URSTS (1 << 0) /* User Reset Status */
  33. #define AT91_RSTC_RSTTYP (7 << 8) /* Reset Type */
  34. #define AT91_RSTC_RSTTYP_GENERAL (0 << 8)
  35. #define AT91_RSTC_RSTTYP_WAKEUP (1 << 8)
  36. #define AT91_RSTC_RSTTYP_WATCHDOG (2 << 8)
  37. #define AT91_RSTC_RSTTYP_SOFTWARE (3 << 8)
  38. #define AT91_RSTC_RSTTYP_USER (4 << 8)
  39. #define AT91_RSTC_NRSTL (1 << 16) /* NRST Pin Level */
  40. #define AT91_RSTC_SRCMP (1 << 17) /* Software Reset Command in Progress */
  41. #define AT91_RSTC_MR 0x08 /* Reset Controller Mode Register */
  42. #define AT91_RSTC_URSTEN (1 << 0) /* User Reset Enable */
  43. #define AT91_RSTC_URSTIEN (1 << 4) /* User Reset Interrupt Enable */
  44. #define AT91_RSTC_ERSTL (0xf << 8) /* External Reset Length */
  45. #endif