cpuinfo.c 2.4 KB

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  1. /*
  2. * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
  3. * Copyright (C) 2007-2009 PetaLogix
  4. * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
  5. *
  6. * This file is subject to the terms and conditions of the GNU General Public
  7. * License. See the file "COPYING" in the main directory of this archive
  8. * for more details.
  9. */
  10. #include <linux/init.h>
  11. #include <asm/cpuinfo.h>
  12. #include <asm/pvr.h>
  13. const struct cpu_ver_key cpu_ver_lookup[] = {
  14. /* These key value are as per MBV field in PVR0 */
  15. {"5.00.a", 0x01},
  16. {"5.00.b", 0x02},
  17. {"5.00.c", 0x03},
  18. {"6.00.a", 0x04},
  19. {"6.00.b", 0x06},
  20. {"7.00.a", 0x05},
  21. {"7.00.b", 0x07},
  22. {"7.10.a", 0x08},
  23. {"7.10.b", 0x09},
  24. {"7.10.c", 0x0a},
  25. {"7.10.d", 0x0b},
  26. {"7.20.a", 0x0c},
  27. {"7.20.b", 0x0d},
  28. {"7.20.c", 0x0e},
  29. {"7.20.d", 0x0f},
  30. {"7.30.a", 0x10},
  31. {"7.30.b", 0x11},
  32. {"8.00.a", 0x12},
  33. {"8.00.b", 0x13},
  34. {"8.10.a", 0x14},
  35. {"8.20.a", 0x15},
  36. {"8.20.b", 0x16},
  37. {"8.30.a", 0x17},
  38. {"8.40.a", 0x18},
  39. {"8.40.b", 0x19},
  40. {NULL, 0},
  41. };
  42. /*
  43. * FIXME Not sure if the actual key is defined by Xilinx in the PVR
  44. */
  45. const struct family_string_key family_string_lookup[] = {
  46. {"virtex2", 0x4},
  47. {"virtex2pro", 0x5},
  48. {"spartan3", 0x6},
  49. {"virtex4", 0x7},
  50. {"virtex5", 0x8},
  51. {"spartan3e", 0x9},
  52. {"spartan3a", 0xa},
  53. {"spartan3an", 0xb},
  54. {"spartan3adsp", 0xc},
  55. {"spartan6", 0xd},
  56. {"virtex6", 0xe},
  57. /* FIXME There is no key code defined for spartan2 */
  58. {"spartan2", 0xf0},
  59. {"kintex7", 0x10},
  60. {"artix7", 0x11},
  61. {"zynq7000", 0x12},
  62. {NULL, 0},
  63. };
  64. struct cpuinfo cpuinfo;
  65. void __init setup_cpuinfo(void)
  66. {
  67. struct device_node *cpu = NULL;
  68. cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
  69. if (!cpu)
  70. pr_err("You don't have cpu!!!\n");
  71. pr_info("%s: initialising\n", __func__);
  72. switch (cpu_has_pvr()) {
  73. case 0:
  74. pr_warn("%s: No PVR support. Using static CPU info from FDT\n",
  75. __func__);
  76. set_cpuinfo_static(&cpuinfo, cpu);
  77. break;
  78. /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
  79. * please do not use FULL PVR with MMU */
  80. case 1:
  81. pr_info("%s: Using full CPU PVR support\n",
  82. __func__);
  83. set_cpuinfo_static(&cpuinfo, cpu);
  84. set_cpuinfo_pvr_full(&cpuinfo, cpu);
  85. break;
  86. default:
  87. pr_warn("%s: Unsupported PVR setting\n", __func__);
  88. set_cpuinfo_static(&cpuinfo, cpu);
  89. }
  90. if (cpuinfo.mmu_privins)
  91. pr_warn("%s: Stream instructions enabled"
  92. " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
  93. }