mpc5200_simple.c 2.3 KB

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  1. /*
  2. * Support for 'mpc5200-simple-platform' compatible boards.
  3. *
  4. * Written by Marian Balakowicz <m8@semihalf.com>
  5. * Copyright (C) 2007 Semihalf
  6. *
  7. * This program is free software; you can redistribute it and/or modify it
  8. * under the terms of the GNU General Public License as published by the
  9. * Free Software Foundation; either version 2 of the License, or (at your
  10. * option) any later version.
  11. *
  12. * Description:
  13. * This code implements support for a simple MPC52xx based boards which
  14. * do not need a custom platform specific setup. Such boards are
  15. * supported assuming the following:
  16. *
  17. * - GPIO pins are configured by the firmware,
  18. * - CDM configuration (clocking) is setup correctly by firmware,
  19. * - if the 'fsl,has-wdt' property is present in one of the
  20. * gpt nodes, then it is safe to use such gpt to reset the board,
  21. * - PCI is supported if enabled in the kernel configuration
  22. * and if there is a PCI bus node defined in the device tree.
  23. *
  24. * Boards that are compatible with this generic platform support
  25. * are listed in a 'board' table.
  26. */
  27. #undef DEBUG
  28. #include <asm/time.h>
  29. #include <asm/prom.h>
  30. #include <asm/machdep.h>
  31. #include <asm/mpc52xx.h>
  32. /*
  33. * Setup the architecture
  34. */
  35. static void __init mpc5200_simple_setup_arch(void)
  36. {
  37. if (ppc_md.progress)
  38. ppc_md.progress("mpc5200_simple_setup_arch()", 0);
  39. /* Map important registers from the internal memory map */
  40. mpc52xx_map_common_devices();
  41. /* Some mpc5200 & mpc5200b related configuration */
  42. mpc5200_setup_xlb_arbiter();
  43. mpc52xx_setup_pci();
  44. }
  45. /* list of the supported boards */
  46. static const char *board[] __initdata = {
  47. "anonymous,a3m071",
  48. "anonymous,a4m072",
  49. "anon,charon",
  50. "ifm,o2d",
  51. "intercontrol,digsy-mtc",
  52. "manroland,mucmc52",
  53. "manroland,uc101",
  54. "phytec,pcm030",
  55. "phytec,pcm032",
  56. "promess,motionpro",
  57. "schindler,cm5200",
  58. "tqc,tqm5200",
  59. NULL
  60. };
  61. /*
  62. * Called very early, MMU is off, device-tree isn't unflattened
  63. */
  64. static int __init mpc5200_simple_probe(void)
  65. {
  66. return of_flat_dt_match(of_get_flat_dt_root(), board);
  67. }
  68. define_machine(mpc5200_simple_platform) {
  69. .name = "mpc5200-simple-platform",
  70. .probe = mpc5200_simple_probe,
  71. .setup_arch = mpc5200_simple_setup_arch,
  72. .init = mpc52xx_declare_of_platform_devices,
  73. .init_IRQ = mpc52xx_init_irq,
  74. .get_irq = mpc52xx_get_irq,
  75. .restart = mpc52xx_restart,
  76. .calibrate_decr = generic_calibrate_decr,
  77. };