cmd_mp.c 2.5 KB

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  1. /*
  2. * Copyright 2008-2009 Freescale Semiconductor, Inc.
  3. *
  4. * See file CREDITS for list of people who contributed to this
  5. * project.
  6. *
  7. * This program is free software; you can redistribute it and/or
  8. * modify it under the terms of the GNU General Public License as
  9. * published by the Free Software Foundation; either version 2 of
  10. * the License, or (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20. * MA 02111-1307 USA
  21. */
  22. #include <common.h>
  23. #include <command.h>
  24. int
  25. cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  26. {
  27. unsigned long cpuid;
  28. if (argc < 3) {
  29. cmd_usage(cmdtp);
  30. return 1;
  31. }
  32. cpuid = simple_strtoul(argv[1], NULL, 10);
  33. if (cpuid >= cpu_numcores()) {
  34. printf ("Core num: %lu is out of range[0..%d]\n",
  35. cpuid, cpu_numcores() - 1);
  36. return 1;
  37. }
  38. if (argc == 3) {
  39. if (strncmp(argv[2], "reset", 5) == 0) {
  40. cpu_reset(cpuid);
  41. } else if (strncmp(argv[2], "status", 6) == 0) {
  42. cpu_status(cpuid);
  43. } else {
  44. cmd_usage(cmdtp);
  45. return 1;
  46. }
  47. return 0;
  48. }
  49. /* 4 or greater, make sure its release */
  50. if (strncmp(argv[2], "release", 7) != 0) {
  51. cmd_usage(cmdtp);
  52. return 1;
  53. }
  54. if (cpu_release(cpuid, argc - 3, argv + 3)) {
  55. cmd_usage(cmdtp);
  56. return 1;
  57. }
  58. return 0;
  59. }
  60. #ifdef CONFIG_PPC
  61. #define CPU_ARCH_HELP \
  62. " [args] : <pir> <r3> <r6>\n" \
  63. " pir - processor id (if writeable)\n" \
  64. " r3 - value for gpr 3\n" \
  65. " r6 - value for gpr 6\n" \
  66. "\n" \
  67. " Use '-' for any arg if you want the default value.\n" \
  68. " Default for r3 is <num> and r6 is 0\n" \
  69. "\n" \
  70. " When cpu <num> is released r4 and r5 = 0.\n" \
  71. " r7 will contain the size of the initial mapped area"
  72. #endif
  73. U_BOOT_CMD(
  74. cpu, CONFIG_SYS_MAXARGS, 1, cpu_cmd,
  75. "Multiprocessor CPU boot manipulation and release",
  76. "<num> reset - Reset cpu <num>\n"
  77. "cpu <num> status - Status of cpu <num>\n"
  78. "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]"
  79. #ifdef CPU_ARCH_HELP
  80. "\n"
  81. CPU_ARCH_HELP
  82. #endif
  83. );