cpu_init.c 1.5 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. /*
  24. * cpu_init.c - low level cpu init
  25. *
  26. * there's really nothing going on here yet. future work area?
  27. */
  28. #include <common.h>
  29. #include <74xx_7xx.h>
  30. /*
  31. * Breath some life into the CPU...
  32. *
  33. * there's basically nothing to do here since the memory controller
  34. * isn't on the CPU in this case.
  35. */
  36. void
  37. cpu_init_f (void)
  38. {
  39. switch (get_cpu_type()) {
  40. case CPU_7450:
  41. case CPU_7455:
  42. case CPU_7457:
  43. case CPU_7447A:
  44. case CPU_7448:
  45. /* enable the timebase bit in HID0 */
  46. set_hid0(get_hid0() | 0x4000000);
  47. break;
  48. default:
  49. /* do nothing */
  50. break;
  51. }
  52. }
  53. /*
  54. * initialize higher level parts of CPU like timers
  55. */
  56. int cpu_init_r (void)
  57. {
  58. return (0);
  59. }