Fix from Pavel Chromy.
https://lists.berlios.de/pipermail/openocd-development/2008-February/001018.html git-svn-id: svn://svn.berlios.de/openocd/trunk@343 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe
parent
3b5690ade1
commit
81184adfb0
3670
src/jtag/jtag.c
3670
src/jtag/jtag.c
File diff suppressed because it is too large
Load Diff
645
src/jtag/jtag.h
645
src/jtag/jtag.h
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@ -1,327 +1,326 @@
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/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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||||
* GNU General Public License for more details. *
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||||
* *
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||||
* You should have received a copy of the GNU General Public License *
|
||||
* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef JTAG_H
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#define JTAG_H
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#include "types.h"
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#include "binarybuffer.h"
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#include "command.h"
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#if 0
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#define _DEBUG_JTAG_IO_
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#endif
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/* Tap States
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* TLR - Test-Logic-Reset, RTI - Run-Test/Idle,
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* SDS - Select-DR-Scan, CD - Capture-DR, SD - Shift-DR, E1D - Exit1-DR,
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* PD - Pause-DR, E2D - Exit2-DR, UD - Update-DR,
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* SIS - Select-IR-Scan, CI - Capture-IR, SI - Shift-IR, E1I - Exit1-IR,
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* PI - Pause-IR, E2I - Exit2-IR, UI - Update-IR
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*/
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enum tap_state
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{
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TAP_TLR = 0x0, TAP_RTI = 0x8,
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TAP_SDS = 0x1, TAP_CD = 0x2, TAP_SD = 0x3, TAP_E1D = 0x4,
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TAP_PD = 0x5, TAP_E2D = 0x6, TAP_UD = 0x7,
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TAP_SIS = 0x9, TAP_CI = 0xa, TAP_SI = 0xb, TAP_E1I = 0xc,
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TAP_PI = 0xd, TAP_E2I = 0xe, TAP_UI = 0xf
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};
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typedef struct tap_transition_s
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{
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enum tap_state high;
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enum tap_state low;
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} tap_transition_t;
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extern char* tap_state_strings[16];
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extern int tap_move_map[16]; /* map 16 TAP states to 6 stable states */
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extern u8 tap_move[6][6]; /* value scanned to TMS to move from one of six stable states to another */
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extern tap_transition_t tap_transitions[16]; /* describe the TAP state diagram */
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extern enum tap_state end_state; /* finish DR scans in dr_end_state */
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extern enum tap_state cur_state; /* current TAP state */
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extern enum tap_state cmd_queue_end_state; /* finish DR scans in dr_end_state */
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extern enum tap_state cmd_queue_cur_state; /* current TAP state */
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#define TAP_MOVE(from, to) tap_move[tap_move_map[from]][tap_move_map[to]]
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typedef void * error_handler_t; /* Later on we can delete error_handler_t, but keep it for now to make patches more readable */
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struct scan_field_s;
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typedef int (*in_handler_t)(u8 *in_value, void *priv, struct scan_field_s *field);
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typedef struct scan_field_s
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{
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int device; /* ordinal device number this instruction refers to */
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int num_bits; /* number of bits this field specifies (up to 32) */
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u8 *out_value; /* value to be scanned into the device */
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u8 *out_mask; /* only masked bits care */
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u8 *in_value; /* pointer to a 32-bit memory location to take data scanned out */
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/* in_check_value/mask, in_handler_error_handler, in_handler_priv can be used by the in handler, otherwise they contain garbage */
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u8 *in_check_value; /* used to validate scan results */
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u8 *in_check_mask; /* check specified bits against check_value */
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in_handler_t in_handler; /* process received buffer using this handler */
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void *in_handler_priv; /* additional information for the in_handler */
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} scan_field_t;
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enum scan_type
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{
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/* IN: from device to host, OUT: from host to device */
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SCAN_IN = 1, SCAN_OUT = 2, SCAN_IO = 3
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};
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typedef struct scan_command_s
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{
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int ir_scan; /* instruction/not data scan */
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int num_fields; /* number of fields in *fields array */
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scan_field_t *fields; /* pointer to an array of data scan fields */
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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} scan_command_t;
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typedef struct statemove_command_s
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{
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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} statemove_command_t;
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typedef struct pathmove_command_s
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{
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int num_states; /* number of states in *path */
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enum tap_state *path; /* states that have to be passed */
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} pathmove_command_t;
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typedef struct runtest_command_s
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{
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int num_cycles; /* number of cycles that should be spent in Run-Test/Idle */
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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} runtest_command_t;
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typedef struct reset_command_s
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{
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int trst; /* trst/srst 0: deassert, 1: assert, -1: don't change */
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int srst;
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} reset_command_t;
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typedef struct end_state_command_s
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{
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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} end_state_command_t;
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typedef struct sleep_command_s
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{
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u32 us; /* number of microseconds to sleep */
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} sleep_command_t;
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typedef union jtag_command_container_u
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{
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scan_command_t *scan;
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statemove_command_t *statemove;
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pathmove_command_t *pathmove;
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runtest_command_t *runtest;
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reset_command_t *reset;
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end_state_command_t *end_state;
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sleep_command_t *sleep;
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} jtag_command_container_t;
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enum jtag_command_type
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{
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JTAG_SCAN = 1,
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JTAG_STATEMOVE = 2, JTAG_RUNTEST = 3,
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JTAG_RESET = 4, JTAG_END_STATE = 5,
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JTAG_PATHMOVE = 6, JTAG_SLEEP = 7
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};
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typedef struct jtag_command_s
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{
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jtag_command_container_t cmd;
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enum jtag_command_type type;
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struct jtag_command_s *next;
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} jtag_command_t;
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extern jtag_command_t *jtag_command_queue;
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typedef struct jtag_device_s
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{
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int ir_length; /* size of instruction register */
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u8 *expected; /* Capture-IR expected value */
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u8 *expected_mask; /* Capture-IR expected mask */
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u32 idcode; /* device identification code */
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u8 *cur_instr; /* current instruction */
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int bypass; /* bypass register selected */
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struct jtag_device_s *next;
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} jtag_device_t;
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extern jtag_device_t *jtag_devices;
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extern int jtag_num_devices;
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extern int jtag_ir_scan_size;
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enum reset_line_mode
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{
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LINE_OPEN_DRAIN = 0x0,
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LINE_PUSH_PULL = 0x1,
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};
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typedef struct jtag_interface_s
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{
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char* name;
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/* queued command execution
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*/
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int (*execute_queue)(void);
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/* interface initalization
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*/
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int (*speed)(int speed);
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int (*register_commands)(struct command_context_s *cmd_ctx);
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int (*init)(void);
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int (*quit)(void);
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} jtag_interface_t;
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enum jtag_event
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{
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JTAG_SRST_ASSERTED,
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JTAG_TRST_ASSERTED,
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JTAG_SRST_RELEASED,
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JTAG_TRST_RELEASED,
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};
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extern char* jtag_event_strings[];
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extern int jtag_trst;
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extern int jtag_srst;
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typedef struct jtag_event_callback_s
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{
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int (*callback)(enum jtag_event event, void *priv);
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void *priv;
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struct jtag_event_callback_s *next;
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} jtag_event_callback_t;
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extern jtag_event_callback_t *jtag_event_callbacks;
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extern jtag_interface_t *jtag; /* global pointer to configured JTAG interface */
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extern enum tap_state end_state;
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extern enum tap_state cur_state;
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extern char* jtag_interface;
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extern int jtag_speed;
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enum reset_types
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{
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RESET_NONE = 0x0,
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RESET_HAS_TRST = 0x1,
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RESET_HAS_SRST = 0x2,
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RESET_TRST_AND_SRST = 0x3,
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RESET_SRST_PULLS_TRST = 0x4,
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RESET_TRST_PULLS_SRST = 0x8,
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RESET_TRST_OPEN_DRAIN = 0x10,
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RESET_SRST_PUSH_PULL = 0x20,
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};
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extern enum reset_types jtag_reset_config;
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/* JTAG subsystem */
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extern int jtag_init(struct command_context_s *cmd_ctx);
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extern int jtag_register_commands(struct command_context_s *cmd_ctx);
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/* JTAG interface, can be implemented with a software or hardware fifo */
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/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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||||
* it under the terms of the GNU General Public License as published by *
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||||
* the Free Software Foundation; either version 2 of the License, or *
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||||
* (at your option) any later version. *
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||||
* *
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||||
* This program is distributed in the hope that it will be useful, *
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||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
||||
* GNU General Public License for more details. *
|
||||
* *
|
||||
* You should have received a copy of the GNU General Public License *
|
||||
* along with this program; if not, write to the *
|
||||
* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef JTAG_H
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#define JTAG_H
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#include "types.h"
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#include "binarybuffer.h"
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#include "command.h"
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#if 0
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#define _DEBUG_JTAG_IO_
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#endif
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/* Tap States
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* TLR - Test-Logic-Reset, RTI - Run-Test/Idle,
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* SDS - Select-DR-Scan, CD - Capture-DR, SD - Shift-DR, E1D - Exit1-DR,
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* PD - Pause-DR, E2D - Exit2-DR, UD - Update-DR,
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* SIS - Select-IR-Scan, CI - Capture-IR, SI - Shift-IR, E1I - Exit1-IR,
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* PI - Pause-IR, E2I - Exit2-IR, UI - Update-IR
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*/
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enum tap_state
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{
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TAP_TLR = 0x0, TAP_RTI = 0x8,
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TAP_SDS = 0x1, TAP_CD = 0x2, TAP_SD = 0x3, TAP_E1D = 0x4,
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TAP_PD = 0x5, TAP_E2D = 0x6, TAP_UD = 0x7,
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TAP_SIS = 0x9, TAP_CI = 0xa, TAP_SI = 0xb, TAP_E1I = 0xc,
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TAP_PI = 0xd, TAP_E2I = 0xe, TAP_UI = 0xf
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};
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typedef struct tap_transition_s
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{
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enum tap_state high;
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enum tap_state low;
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} tap_transition_t;
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extern char* tap_state_strings[16];
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extern int tap_move_map[16]; /* map 16 TAP states to 6 stable states */
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extern u8 tap_move[6][6]; /* value scanned to TMS to move from one of six stable states to another */
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extern tap_transition_t tap_transitions[16]; /* describe the TAP state diagram */
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extern enum tap_state end_state; /* finish DR scans in dr_end_state */
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extern enum tap_state cur_state; /* current TAP state */
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extern enum tap_state cmd_queue_end_state; /* finish DR scans in dr_end_state */
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extern enum tap_state cmd_queue_cur_state; /* current TAP state */
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#define TAP_MOVE(from, to) tap_move[tap_move_map[from]][tap_move_map[to]]
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typedef void * error_handler_t; /* Later on we can delete error_handler_t, but keep it for now to make patches more readable */
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struct scan_field_s;
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typedef int (*in_handler_t)(u8 *in_value, void *priv, struct scan_field_s *field);
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typedef struct scan_field_s
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{
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int device; /* ordinal device number this instruction refers to */
|
||||
int num_bits; /* number of bits this field specifies (up to 32) */
|
||||
u8 *out_value; /* value to be scanned into the device */
|
||||
u8 *out_mask; /* only masked bits care */
|
||||
u8 *in_value; /* pointer to a 32-bit memory location to take data scanned out */
|
||||
/* in_check_value/mask, in_handler_error_handler, in_handler_priv can be used by the in handler, otherwise they contain garbage */
|
||||
u8 *in_check_value; /* used to validate scan results */
|
||||
u8 *in_check_mask; /* check specified bits against check_value */
|
||||
in_handler_t in_handler; /* process received buffer using this handler */
|
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void *in_handler_priv; /* additional information for the in_handler */
|
||||
} scan_field_t;
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|
||||
enum scan_type
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{
|
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/* IN: from device to host, OUT: from host to device */
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SCAN_IN = 1, SCAN_OUT = 2, SCAN_IO = 3
|
||||
};
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|
||||
typedef struct scan_command_s
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{
|
||||
int ir_scan; /* instruction/not data scan */
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||||
int num_fields; /* number of fields in *fields array */
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scan_field_t *fields; /* pointer to an array of data scan fields */
|
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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} scan_command_t;
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||||
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typedef struct statemove_command_s
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{
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enum tap_state end_state; /* TAP state in which JTAG commands should finish */
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||||
} statemove_command_t;
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||||
|
||||
typedef struct pathmove_command_s
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||||
{
|
||||
int num_states; /* number of states in *path */
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||||
enum tap_state *path; /* states that have to be passed */
|
||||
} pathmove_command_t;
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||||
|
||||
typedef struct runtest_command_s
|
||||
{
|
||||
int num_cycles; /* number of cycles that should be spent in Run-Test/Idle */
|
||||
enum tap_state end_state; /* TAP state in which JTAG commands should finish */
|
||||
} runtest_command_t;
|
||||
|
||||
typedef struct reset_command_s
|
||||
{
|
||||
int trst; /* trst/srst 0: deassert, 1: assert, -1: don't change */
|
||||
int srst;
|
||||
} reset_command_t;
|
||||
|
||||
typedef struct end_state_command_s
|
||||
{
|
||||
enum tap_state end_state; /* TAP state in which JTAG commands should finish */
|
||||
} end_state_command_t;
|
||||
|
||||
typedef struct sleep_command_s
|
||||
{
|
||||
u32 us; /* number of microseconds to sleep */
|
||||
} sleep_command_t;
|
||||
|
||||
typedef union jtag_command_container_u
|
||||
{
|
||||
scan_command_t *scan;
|
||||
statemove_command_t *statemove;
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||||
pathmove_command_t *pathmove;
|
||||
runtest_command_t *runtest;
|
||||
reset_command_t *reset;
|
||||
end_state_command_t *end_state;
|
||||
sleep_command_t *sleep;
|
||||
} jtag_command_container_t;
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||||
|
||||
enum jtag_command_type
|
||||
{
|
||||
JTAG_SCAN = 1,
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||||
JTAG_STATEMOVE = 2, JTAG_RUNTEST = 3,
|
||||
JTAG_RESET = 4, JTAG_END_STATE = 5,
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||||
JTAG_PATHMOVE = 6, JTAG_SLEEP = 7
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||||
};
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||||
|
||||
typedef struct jtag_command_s
|
||||
{
|
||||
jtag_command_container_t cmd;
|
||||
enum jtag_command_type type;
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||||
struct jtag_command_s *next;
|
||||
} jtag_command_t;
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||||
|
||||
extern jtag_command_t *jtag_command_queue;
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||||
|
||||
typedef struct jtag_device_s
|
||||
{
|
||||
int ir_length; /* size of instruction register */
|
||||
u8 *expected; /* Capture-IR expected value */
|
||||
u8 *expected_mask; /* Capture-IR expected mask */
|
||||
u32 idcode; /* device identification code */
|
||||
u8 *cur_instr; /* current instruction */
|
||||
int bypass; /* bypass register selected */
|
||||
struct jtag_device_s *next;
|
||||
} jtag_device_t;
|
||||
|
||||
extern jtag_device_t *jtag_devices;
|
||||
extern int jtag_num_devices;
|
||||
extern int jtag_ir_scan_size;
|
||||
|
||||
enum reset_line_mode
|
||||
{
|
||||
LINE_OPEN_DRAIN = 0x0,
|
||||
LINE_PUSH_PULL = 0x1,
|
||||
};
|
||||
|
||||
typedef struct jtag_interface_s
|
||||
{
|
||||
char* name;
|
||||
|
||||
/* queued command execution
|
||||
*/
|
||||
int (*execute_queue)(void);
|
||||
|
||||
/* interface initalization
|
||||
*/
|
||||
int (*speed)(int speed);
|
||||
int (*register_commands)(struct command_context_s *cmd_ctx);
|
||||
int (*init)(void);
|
||||
int (*quit)(void);
|
||||
|
||||
} jtag_interface_t;
|
||||
|
||||
enum jtag_event
|
||||
{
|
||||
JTAG_SRST_ASSERTED,
|
||||
JTAG_TRST_ASSERTED,
|
||||
JTAG_SRST_RELEASED,
|
||||
JTAG_TRST_RELEASED,
|
||||
};
|
||||
|
||||
extern char* jtag_event_strings[];
|
||||
|
||||
extern int jtag_trst;
|
||||
extern int jtag_srst;
|
||||
|
||||
typedef struct jtag_event_callback_s
|
||||
{
|
||||
int (*callback)(enum jtag_event event, void *priv);
|
||||
void *priv;
|
||||
struct jtag_event_callback_s *next;
|
||||
} jtag_event_callback_t;
|
||||
|
||||
extern jtag_event_callback_t *jtag_event_callbacks;
|
||||
|
||||
extern jtag_interface_t *jtag; /* global pointer to configured JTAG interface */
|
||||
extern enum tap_state end_state;
|
||||
extern enum tap_state cur_state;
|
||||
|
||||
extern int jtag_speed;
|
||||
|
||||
enum reset_types
|
||||
{
|
||||
RESET_NONE = 0x0,
|
||||
RESET_HAS_TRST = 0x1,
|
||||
RESET_HAS_SRST = 0x2,
|
||||
RESET_TRST_AND_SRST = 0x3,
|
||||
RESET_SRST_PULLS_TRST = 0x4,
|
||||
RESET_TRST_PULLS_SRST = 0x8,
|
||||
RESET_TRST_OPEN_DRAIN = 0x10,
|
||||
RESET_SRST_PUSH_PULL = 0x20,
|
||||
};
|
||||
|
||||
extern enum reset_types jtag_reset_config;
|
||||
|
||||
/* JTAG subsystem */
|
||||
extern int jtag_init(struct command_context_s *cmd_ctx);
|
||||
extern int jtag_register_commands(struct command_context_s *cmd_ctx);
|
||||
|
||||
/* JTAG interface, can be implemented with a software or hardware fifo */
|
||||
extern int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
/* execute a state transition within the JTAG standard, but the exact path
|
||||
* path that is taken is undefined. Many implementations use precisely
|
||||
* 7 clocks to perform a transition, but it could be more or less
|
||||
* than that.
|
||||
*
|
||||
* The following assertions are made about certain common state moves:
|
||||
*
|
||||
* - A state move from Pause-[ID]R to Pause-[ID]R should always go through
|
||||
* Update-[ID]R and Capture-[ID]R before returning to Pause-[ID]R, otherwise
|
||||
* there's no way force a register update, if you can't go to Run-Test/Idle for
|
||||
* some reason.
|
||||
*
|
||||
* - A state move from Pause-[ID]R to Shift-[ID]R must not go through
|
||||
* Update-[ID]R.
|
||||
*
|
||||
* - Run-Test/Idle must not be entered unless requested, because R-T/I may have
|
||||
* side effects.
|
||||
*/
|
||||
extern int jtag_add_statemove(enum tap_state endstate);
|
||||
/* A list of unambigious single clock state transitions, not
|
||||
* all drivers can support this, but it is required for e.g.
|
||||
* XScale and Xilinx support
|
||||
*/
|
||||
extern int jtag_add_pathmove(int num_states, enum tap_state *path);
|
||||
/* cycle precisely num_cycles in the TAP_RTI state */
|
||||
extern int jtag_add_runtest(int num_cycles, enum tap_state endstate);
|
||||
extern int jtag_add_reset(int trst, int srst);
|
||||
extern int jtag_add_end_state(enum tap_state endstate);
|
||||
extern int jtag_add_sleep(u32 us);
|
||||
/*
|
||||
* For software FIFO implementations, the queued commands can be executed
|
||||
* during this call or earlier. A sw queue might decide to push out
|
||||
* some of the jtag_add_xxx() operations once the queue is "big enough".
|
||||
*
|
||||
* This fn will return an error code if any of the prior jtag_add_xxx()
|
||||
* calls caused a failure, e.g. check failure. Note that it does not
|
||||
* matter if the operation was executed *before* jtag_execute_queue(),
|
||||
* jtag_execute_queue() will still return an error code.
|
||||
*
|
||||
* All jtag_add_xxx() calls that have in_handler!=NULL will have been
|
||||
* executed when this fn returns, but if what has been queued only
|
||||
* clocks data out, without reading anything back, then JTAG could
|
||||
* be running *after* jtag_execute_queue() returns. The API does
|
||||
* not define a way to flush a hw FIFO that runs *after*
|
||||
* jtag_execute_queue() returns.
|
||||
*
|
||||
* jtag_add_xxx() commands can either be executed immediately or
|
||||
* at some time between the jtag_add_xxx() fn call and jtag_execute_queue().
|
||||
*/
|
||||
extern int jtag_execute_queue(void);
|
||||
|
||||
/* JTAG support functions */
|
||||
extern void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler);
|
||||
extern enum scan_type jtag_scan_type(scan_command_t *cmd);
|
||||
extern int jtag_scan_size(scan_command_t *cmd);
|
||||
extern int jtag_read_buffer(u8 *buffer, scan_command_t *cmd);
|
||||
extern int jtag_build_buffer(scan_command_t *cmd, u8 **buffer);
|
||||
extern jtag_device_t* jtag_get_device(int num);
|
||||
extern void jtag_sleep(u32 us);
|
||||
extern int jtag_call_event_callbacks(enum jtag_event event);
|
||||
extern int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv);
|
||||
|
||||
extern int jtag_verify_capture_ir;
|
||||
|
||||
|
||||
/* error codes
|
||||
* JTAG subsystem uses codes between -100 and -199 */
|
||||
|
||||
#define ERROR_JTAG_INIT_FAILED (-100)
|
||||
#define ERROR_JTAG_INVALID_INTERFACE (-101)
|
||||
#define ERROR_JTAG_NOT_IMPLEMENTED (-102)
|
||||
#define ERROR_JTAG_TRST_ASSERTED (-103)
|
||||
#define ERROR_JTAG_QUEUE_FAILED (-104)
|
||||
#define ERROR_JTAG_RESET_WOULD_ASSERT_TRST (-105)
|
||||
#define ERROR_JTAG_RESET_CANT_SRST (-106)
|
||||
#define ERROR_JTAG_DEVICE_ERROR (-107)
|
||||
#endif /* JTAG_H */
|
||||
/* execute a state transition within the JTAG standard, but the exact path
|
||||
* path that is taken is undefined. Many implementations use precisely
|
||||
* 7 clocks to perform a transition, but it could be more or less
|
||||
* than that.
|
||||
*
|
||||
* The following assertions are made about certain common state moves:
|
||||
*
|
||||
* - A state move from Pause-[ID]R to Pause-[ID]R should always go through
|
||||
* Update-[ID]R and Capture-[ID]R before returning to Pause-[ID]R, otherwise
|
||||
* there's no way force a register update, if you can't go to Run-Test/Idle for
|
||||
* some reason.
|
||||
*
|
||||
* - A state move from Pause-[ID]R to Shift-[ID]R must not go through
|
||||
* Update-[ID]R.
|
||||
*
|
||||
* - Run-Test/Idle must not be entered unless requested, because R-T/I may have
|
||||
* side effects.
|
||||
*/
|
||||
extern int jtag_add_statemove(enum tap_state endstate);
|
||||
/* A list of unambigious single clock state transitions, not
|
||||
* all drivers can support this, but it is required for e.g.
|
||||
* XScale and Xilinx support
|
||||
*/
|
||||
extern int jtag_add_pathmove(int num_states, enum tap_state *path);
|
||||
/* cycle precisely num_cycles in the TAP_RTI state */
|
||||
extern int jtag_add_runtest(int num_cycles, enum tap_state endstate);
|
||||
extern int jtag_add_reset(int trst, int srst);
|
||||
extern int jtag_add_end_state(enum tap_state endstate);
|
||||
extern int jtag_add_sleep(u32 us);
|
||||
/*
|
||||
* For software FIFO implementations, the queued commands can be executed
|
||||
* during this call or earlier. A sw queue might decide to push out
|
||||
* some of the jtag_add_xxx() operations once the queue is "big enough".
|
||||
*
|
||||
* This fn will return an error code if any of the prior jtag_add_xxx()
|
||||
* calls caused a failure, e.g. check failure. Note that it does not
|
||||
* matter if the operation was executed *before* jtag_execute_queue(),
|
||||
* jtag_execute_queue() will still return an error code.
|
||||
*
|
||||
* All jtag_add_xxx() calls that have in_handler!=NULL will have been
|
||||
* executed when this fn returns, but if what has been queued only
|
||||
* clocks data out, without reading anything back, then JTAG could
|
||||
* be running *after* jtag_execute_queue() returns. The API does
|
||||
* not define a way to flush a hw FIFO that runs *after*
|
||||
* jtag_execute_queue() returns.
|
||||
*
|
||||
* jtag_add_xxx() commands can either be executed immediately or
|
||||
* at some time between the jtag_add_xxx() fn call and jtag_execute_queue().
|
||||
*/
|
||||
extern int jtag_execute_queue(void);
|
||||
|
||||
/* JTAG support functions */
|
||||
extern void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler);
|
||||
extern enum scan_type jtag_scan_type(scan_command_t *cmd);
|
||||
extern int jtag_scan_size(scan_command_t *cmd);
|
||||
extern int jtag_read_buffer(u8 *buffer, scan_command_t *cmd);
|
||||
extern int jtag_build_buffer(scan_command_t *cmd, u8 **buffer);
|
||||
extern jtag_device_t* jtag_get_device(int num);
|
||||
extern void jtag_sleep(u32 us);
|
||||
extern int jtag_call_event_callbacks(enum jtag_event event);
|
||||
extern int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv);
|
||||
|
||||
extern int jtag_verify_capture_ir;
|
||||
|
||||
|
||||
/* error codes
|
||||
* JTAG subsystem uses codes between -100 and -199 */
|
||||
|
||||
#define ERROR_JTAG_INIT_FAILED (-100)
|
||||
#define ERROR_JTAG_INVALID_INTERFACE (-101)
|
||||
#define ERROR_JTAG_NOT_IMPLEMENTED (-102)
|
||||
#define ERROR_JTAG_TRST_ASSERTED (-103)
|
||||
#define ERROR_JTAG_QUEUE_FAILED (-104)
|
||||
#define ERROR_JTAG_RESET_WOULD_ASSERT_TRST (-105)
|
||||
#define ERROR_JTAG_RESET_CANT_SRST (-106)
|
||||
#define ERROR_JTAG_DEVICE_ERROR (-107)
|
||||
#endif /* JTAG_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue