src/target/arm_jtag.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2005 by Dominic Rath                                    *
   5  *   Dominic.Rath@gmx.de                                                   *
   6  *                                                                         *
   7  *   Copyright (C) 2007-2010 Øyvind Harboe                                 *
   8  *   oyvind.harboe@zylin.com                                               *
   9  ***************************************************************************/
  10
  11 #ifndef OPENOCD_TARGET_ARM_JTAG_H
  12 #define OPENOCD_TARGET_ARM_JTAG_H
  13
  14 #include <jtag/jtag.h>
  15 #include <helper/bits.h>
  16
  17 struct arm_jtag {
  18         struct jtag_tap *tap;
  19
  20         uint32_t scann_size;
  21         uint32_t scann_instr;
  22         uint32_t cur_scan_chain;
  23
  24         uint32_t intest_instr;
  25 };
  26
  27 int arm_jtag_set_instr_inner(struct jtag_tap *tap, uint32_t new_instr,
  28                 void *no_verify_capture,
  29                 tap_state_t end_state);
  30
  31 static inline int arm_jtag_set_instr(struct jtag_tap *tap,
  32                 uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
  33 {
  34         /* inline most common code path */
  35         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != (new_instr & (BIT(tap->ir_length) - 1)))
  36                 return arm_jtag_set_instr_inner(tap, new_instr, no_verify_capture, end_state);
  37
  38         return ERROR_OK;
  39
  40 }
  41
  42 int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state);
  43 static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
  44 {
  45         /* inline most common code path */
  46         int retval = ERROR_OK;
  47         if (jtag_info->cur_scan_chain != new_scan_chain)
  48                 return arm_jtag_scann_inner(jtag_info, new_scan_chain, end_state);
  49
  50         return retval;
  51 }
  52
  53 int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
  54 int arm_jtag_close_connection(struct arm_jtag *jtag_info);
  55
  56 /* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
  57 static inline void arm7flip32(jtag_callback_data_t arg)
  58 {
  59         uint8_t *in = (uint8_t *)arg;
  60         *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
  61 }
  62
  63 static inline void arm_le_to_h_u32(jtag_callback_data_t arg)
  64 {
  65         uint8_t *in = (uint8_t *)arg;
  66         *((uint32_t *)arg) = le_to_h_u32(in);
  67 }
  68
  69 #endif /* OPENOCD_TARGET_ARM_JTAG_H */