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  1. /***************************************************************************
  2. * Copyright (C) 2005 by Dominic Rath *
  3. * Dominic.Rath@gmx.de *
  4. * *
  5. * Copyright (C) 2007,2008 √ėyvind Harboe *
  6. * oyvind.harboe@zylin.com *
  7. * *
  8. * This program is free software; you can redistribute it and/or modify *
  9. * it under the terms of the GNU General Public License as published by *
  10. * the Free Software Foundation; either version 2 of the License, or *
  11. * (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 *
  20. * Free Software Foundation, Inc., *
  21. * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
  22. ***************************************************************************/
  23. #ifndef ARM_JTAG
  24. #define ARM_JTAG
  25. #include <jtag/jtag.h>
  26. struct arm_jtag
  27. {
  28. struct jtag_tap *tap;
  29. uint32_t scann_size;
  30. uint32_t scann_instr;
  31. uint32_t cur_scan_chain;
  32. uint32_t intest_instr;
  33. };
  34. int arm_jtag_set_instr_inner(struct arm_jtag *jtag_info, uint32_t new_instr, void *no_verify_capture);
  35. static inline int arm_jtag_set_instr(struct arm_jtag *jtag_info,
  36. uint32_t new_instr, void *no_verify_capture)
  37. {
  38. /* inline most common code path */
  39. struct jtag_tap *tap;
  40. tap = jtag_info->tap;
  41. if (tap == NULL)
  42. return ERROR_FAIL;
  43. if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
  44. {
  45. return arm_jtag_set_instr_inner(jtag_info, new_instr, no_verify_capture);
  46. }
  47. return ERROR_OK;
  48. }
  49. int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain);
  50. static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain)
  51. {
  52. /* inline most common code path */
  53. int retval = ERROR_OK;
  54. if (jtag_info->cur_scan_chain != new_scan_chain)
  55. {
  56. return arm_jtag_scann_inner(jtag_info, new_scan_chain);
  57. }
  58. return retval;
  59. }
  60. int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
  61. /* use this as a static so we can inline it in -O3 and refer to it via a pointer */
  62. static __inline__ void arm7flip32(jtag_callback_data_t arg)
  63. {
  64. uint8_t *in = (uint8_t *)arg;
  65. *((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
  66. }
  67. static __inline__ void arm_le_to_h_u32(jtag_callback_data_t arg)
  68. {
  69. uint8_t *in = (uint8_t *)arg;
  70. *((uint32_t *)in) = le_to_h_u32(in);
  71. }
  72. #endif /* ARM_JTAG */