cpu_info-rcar.c 985 B

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
  4. *
  5. * Copyright (C) 2013,2014 Renesas Electronics Corporation
  6. */
  7. #include <common.h>
  8. #include <asm/io.h>
  9. #define PRR_MASK 0x7fff
  10. #define R8A7796_REV_1_0 0x5200
  11. #define R8A7796_REV_1_1 0x5210
  12. #define R8A7796_REV_1_3 0x5211
  13. static u32 rmobile_get_prr(void)
  14. {
  15. #ifdef CONFIG_RCAR_GEN3
  16. return readl(0xFFF00044);
  17. #else
  18. return readl(0xFF000044);
  19. #endif
  20. }
  21. u32 rmobile_get_cpu_type(void)
  22. {
  23. return (rmobile_get_prr() & 0x00007F00) >> 8;
  24. }
  25. u32 rmobile_get_cpu_rev_integer(void)
  26. {
  27. const u32 prr = rmobile_get_prr();
  28. const u32 rev = prr & PRR_MASK;
  29. if (rev == R8A7796_REV_1_1 || rev == R8A7796_REV_1_3)
  30. return 1;
  31. else
  32. return ((prr & 0x000000F0) >> 4) + 1;
  33. }
  34. u32 rmobile_get_cpu_rev_fraction(void)
  35. {
  36. const u32 prr = rmobile_get_prr();
  37. const u32 rev = prr & PRR_MASK;
  38. if (rev == R8A7796_REV_1_1)
  39. return 1;
  40. else if (rev == R8A7796_REV_1_3)
  41. return 3;
  42. else
  43. return prr & 0x0000000F;
  44. }