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openocd/src/jtag/usbprog.c
drath 1429d2c659 - added support for Asix Presto JTAG interface (thanks to Pavel Chromy and Asix for making this addition possible) 
- added support for usbprog (thanks to Benedikt Sauter)
- make OpenOCD listen for WM_QUIT messages on windows (thanks to Pavel Chromy)
- register at_exit handler to do necessary unregistering (thanks to Pavel Chromy)
- added dummy ETM capture driver to allow ETM to be registered without a capture driver


git-svn-id: svn://svn.berlios.de/openocd/trunk@180 b42882b7-edfa-0310-969c-e2dbd0fdcd60
2007-07-15 11:19:33 +00:00

633 lines
17 KiB
C
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/***************************************************************************
* Copyright (C) 2007 by Benedikt Sauter sauter@ixbat.de *
* based on Dominic Rath's usbprog.c *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "replacements.h"
#include "jtag.h"
#include <usb.h>
/* system includes */
#include "log.h"
#define VID 0x1781
#define PID 0x0c62
int usbprog_execute_queue(void);
int usbprog_speed(int speed);
int usbprog_register_commands(struct command_context_s *cmd_ctx);
int usbprog_init(void);
int usbprog_quit(void);
void usbprog_end_state(enum tap_state state);
void usbprog_state_move(void);
void usbprog_path_move(pathmove_command_t *cmd);
void usbprog_runtest(int num_cycles);
void usbprog_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size);
jtag_interface_t usbprog_interface =
{
.name = "usbprog",
.execute_queue = usbprog_execute_queue,
.support_pathmove = 0,
.speed = usbprog_speed,
.register_commands = usbprog_register_commands,
.init = usbprog_init,
.quit = usbprog_quit
};
// pins from avr
#define TDO_BIT 0
#define TDI_BIT 3
#define TCK_BIT 2
#define TMS_BIT 1
#define UNKOWN_COMMAND 0x00
#define PORT_DIRECTION 0x01
#define PORT_SET 0x02
#define PORT_GET 0x03
#define PORT_SETBIT 0x04
#define PORT_GETBIT 0x05
#define WRITE_TDI 0x06
#define READ_TDO 0x07
#define WRITE_AND_READ 0x08
#define WRITE_TMS 0x09
struct usbprog_jtag
{
struct usb_dev_handle* usb_handle;
};
struct usbprog_jtag * usbprog_jtag_handle;
struct usbprog_jtag* usbprog_jtag_open();
void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag);
void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag);
unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen);
void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan);
void usbprog_write(int tck, int tms, int tdi);
void usbprog_reset(int trst, int srst);
void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction);
void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value);
unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag);
void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value);
int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit);
int usbprog_speed(int speed)
{
return ERROR_OK;
}
int usbprog_register_commands(struct command_context_s *cmd_ctx)
{
return ERROR_OK;
}
int usbprog_execute_queue(void)
{
jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
int scan_size;
enum scan_type type;
u8 *buffer;
while (cmd)
{
switch (cmd->type)
{
case JTAG_END_STATE:
#ifdef _DEBUG_JTAG_IO_
DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
#endif
if (cmd->cmd.end_state->end_state != -1)
usbprog_end_state(cmd->cmd.end_state->end_state);
break;
case JTAG_RESET:
#ifdef _DEBUG_JTAG_IO_
DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
#endif
if (cmd->cmd.reset->trst == 1)
{
cur_state = TAP_TLR;
}
usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
break;
case JTAG_RUNTEST:
#ifdef _DEBUG_JTAG_IO_
DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
#endif
if (cmd->cmd.runtest->end_state != -1)
usbprog_end_state(cmd->cmd.runtest->end_state);
usbprog_runtest(cmd->cmd.runtest->num_cycles);
break;
case JTAG_STATEMOVE:
#ifdef _DEBUG_JTAG_IO_
DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
#endif
if (cmd->cmd.statemove->end_state != -1)
usbprog_end_state(cmd->cmd.statemove->end_state);
usbprog_state_move();
break;
case JTAG_PATHMOVE:
#ifdef _DEBUG_JTAG_IO_
DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states,
cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
#endif
usbprog_path_move(cmd->cmd.pathmove);
break;
case JTAG_SCAN:
#ifdef _DEBUG_JTAG_IO_
DEBUG("scan end in %i", cmd->cmd.scan->end_state);
#endif
if (cmd->cmd.scan->end_state != -1)
usbprog_end_state(cmd->cmd.scan->end_state);
scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
type = jtag_scan_type(cmd->cmd.scan);
usbprog_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
return ERROR_JTAG_QUEUE_FAILED;
if (buffer)
free(buffer);
break;
case JTAG_SLEEP:
#ifdef _DEBUG_JTAG_IO_
DEBUG("sleep %i", cmd->cmd.sleep->us);
#endif
jtag_sleep(cmd->cmd.sleep->us);
break;
default:
ERROR("BUG: unknown JTAG command type encountered");
exit(-1);
}
cmd = cmd->next;
}
return ERROR_OK;
}
int usbprog_init(void)
{
usbprog_jtag_handle = usbprog_jtag_open();
if(usbprog_jtag_handle==0){
ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
return ERROR_JTAG_INIT_FAILED;
}
INFO("USB JTAG Interface ready!");
usbprog_jtag_init(usbprog_jtag_handle);
usbprog_reset(0, 0);
usbprog_write(0, 0, 0);
return ERROR_OK;
}
int usbprog_quit(void)
{
return ERROR_OK;
}
/*************** jtag execute commands **********************/
void usbprog_end_state(enum tap_state state)
{
if (tap_move_map[state] != -1)
end_state = state;
else
{
ERROR("BUG: %i is not a valid end state", state);
exit(-1);
}
}
void usbprog_state_move(void) {
int i=0, tms=0;
u8 tms_scan = TAP_MOVE(cur_state, end_state);
usbprog_jtag_write_tms(usbprog_jtag_handle,(char)tms_scan);
for (i = 0; i < 7; i++)
{
tms = (tms_scan >> i) & 1;
}
// moved into firmware
// INFO("4");
// koennte man in tms verlagern
//usbprog_write(0, tms, 0);
cur_state = end_state;
}
void usbprog_path_move(pathmove_command_t *cmd)
{
int num_states = cmd->num_states;
int state_count;
state_count = 0;
while (num_states)
{
if (tap_transitions[cur_state].low == cmd->path[state_count])
{
INFO("1");
usbprog_write(0, 0, 0);
usbprog_write(1, 0, 0);
}
else if (tap_transitions[cur_state].high == cmd->path[state_count])
{
INFO("2");
usbprog_write(0, 1, 0);
usbprog_write(1, 1, 0);
}
else
{
ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
exit(-1);
}
cur_state = cmd->path[state_count];
state_count++;
num_states--;
}
end_state = cur_state;
}
void usbprog_runtest(int num_cycles)
{
int i;
enum tap_state saved_end_state = end_state;
/* only do a state_move when we're not already in RTI */
if (cur_state != TAP_RTI)
{
usbprog_end_state(TAP_RTI);
//INFO("6");
usbprog_state_move();
}
/* execute num_cycles */
if(num_cycles>0)
{
INFO("5");
usbprog_write(0, 0, 0);
}
for (i = 0; i < num_cycles; i++)
{
INFO("3");
usbprog_write(1, 0, 0);
usbprog_write(0, 0, 0);
}
/* finish in end_state */
/*
usbprog_end_state(saved_end_state);
if (cur_state != end_state)
usbprog_state_move();
*/
}
void usbprog_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
{
enum tap_state saved_end_state = end_state;
int bit_cnt;
if (ir_scan)
usbprog_end_state(TAP_SI);
else
usbprog_end_state(TAP_SD);
//INFO("7");
usbprog_state_move();
usbprog_end_state(saved_end_state);
if (type == SCAN_OUT) {
usbprog_jtag_write_tdi(usbprog_jtag_handle,buffer, scan_size);
}
if (type == SCAN_IN) {
usbprog_jtag_read_tdo(usbprog_jtag_handle,buffer, scan_size);
}
if (type == SCAN_IO) {
usbprog_jtag_write_and_read(usbprog_jtag_handle,buffer, scan_size);
}
if (ir_scan)
cur_state = TAP_PI;
else
cur_state = TAP_PD;
if (cur_state != end_state)
usbprog_state_move();
}
/*************** jtag wrapper functions *********************/
void usbprog_write(int tck, int tms, int tdi)
{
//INFO("->USBPROG SLICE");
//DEBUG("slice tck %i tms %i tdi %i",tck,tms,tdi);
unsigned char output_value=0x00;
if (tms)
output_value |= (1<<TMS_BIT);
if (tdi)
output_value |= (1<<TDI_BIT);
if (tck)
output_value |= (1<<TCK_BIT);
usbprog_jtag_write_slice(usbprog_jtag_handle,output_value);
}
/* (1) assert or (0) deassert reset lines */
void usbprog_reset(int trst, int srst)
{
//INFO("->USBPROG RESET");
DEBUG("trst: %i, srst: %i", trst, srst);
if(trst)
usbprog_jtag_set_bit(usbprog_jtag_handle,5,0);
else
usbprog_jtag_set_bit(usbprog_jtag_handle,5,1);
if(srst)
usbprog_jtag_set_bit(usbprog_jtag_handle,4,0);
else
usbprog_jtag_set_bit(usbprog_jtag_handle,4,1);
}
/*************** jtag lowlevel functions ********************/
struct usbprog_jtag* usbprog_jtag_open()
{
struct usb_bus *busses;
struct usb_dev_handle* usb_handle;
struct usb_bus *bus;
struct usb_device *dev;
struct usbprog_jtag * tmp;
tmp = (struct usbprog_jtag*)malloc(sizeof(struct usbprog_jtag));
usb_init();
usb_find_busses();
usb_find_devices();
busses = usb_get_busses();
/* find usbprog_jtag device in usb bus */
for (bus = busses; bus; bus = bus->next){
for (dev = bus->devices; dev; dev = dev->next){
/* condition for sucessfully hit (too bad, I only check the vendor id)*/
if (dev->descriptor.idVendor == VID && dev->descriptor.idProduct == PID) {
tmp->usb_handle = usb_open(dev);
usb_set_configuration (tmp->usb_handle,dev->config[0].bConfigurationValue);
usb_claim_interface(tmp->usb_handle, 0);
usb_set_altinterface(tmp->usb_handle,0);
return tmp;
}
}
}
return 0;
}
void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag)
{
usb_close(usbprog_jtag->usb_handle);
free(usbprog_jtag);
}
unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen)
{
int res = usb_bulk_write(usbprog_jtag->usb_handle,3,msg,msglen,100);
if(msg[0]==2)
return 1;
if(res == msglen) {
res = usb_bulk_read(usbprog_jtag->usb_handle,0x82, msg, 2, 100);
if (res > 0)
return (unsigned char)msg[1];
else
return -1;
}
else
return -1;
return 0;
}
void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag)
{
usbprog_jtag_set_direction(usbprog_jtag, 0xFE);
}
void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
{
char tmp[64]; // fastes packet size for usb controller
int send_bits,bufindex=0,fillindex=0,i,j,complete=size,loops;
char swap;
// 61 byte can be transfered (488 bit)
while(size > 0) {
if(size > 488) {
send_bits = 488;
size = size - 488;
loops = 61;
} else {
send_bits = size;
loops = size/8;
loops++;
size = 0;
}
tmp[0] = WRITE_AND_READ;
tmp[1] = (char)(send_bits>>8); // high
tmp[2] = (char)(send_bits); // low
i=0;
for(i=0;i < loops ;i++) {
tmp[3+i]=buffer[bufindex];
bufindex++;
}
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,64,1000);
while(usb_bulk_read(usbprog_jtag->usb_handle,0x82, tmp, 64, 1000) < 1);
for(i=0;i<loops ;i++) {
swap = tmp[3+i];
buffer[fillindex++] = swap;
}
}
}
void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
{
char tmp[64]; // fastes packet size for usb controller
int send_bits,bufindex=0,fillindex=0,i,j,complete=size,loops;
char swap;
// 61 byte can be transfered (488 bit)
while(size > 0) {
if(size > 488) {
send_bits = 488;
size = size - 488;
loops = 61;
} else {
send_bits = size;
loops = size/8;
loops++;
size = 0;
}
tmp[0] = WRITE_AND_READ;
tmp[1] = (char)(send_bits>>8); // high
tmp[2] = (char)(send_bits); // low
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,3,1000);
while(usb_bulk_read(usbprog_jtag->usb_handle,0x82, tmp, 64, 10) < 1);
for(i=0;i<loops ;i++) {
swap = tmp[3+i];
buffer[fillindex++] = swap;
}
}
}
void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
{
char tmp[64]; // fastes packet size for usb controller
int send_bits,bufindex=0,fillindex=0,i,j,complete=size,loops;
char swap;
// 61 byte can be transfered (488 bit)
while(size > 0) {
if(size > 488) {
send_bits = 488;
size = size - 488;
loops = 61;
} else {
send_bits = size;
loops = size/8;
//if(loops==0)
loops++;
size = 0;
}
tmp[0] = WRITE_TDI;
tmp[1] = (char)(send_bits>>8); // high
tmp[2] = (char)(send_bits); // low
i=0;
for(i=0;i < loops ;i++) {
tmp[3+i]=buffer[bufindex];
bufindex++;
}
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,64,1000);
}
}
void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan)
{
char tmp[2]; // fastes packet size for usb controller
tmp[0] = WRITE_TMS;
tmp[1] = tms_scan;
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,2,1000);
}
void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction)
{
char tmp[2];
tmp[0] = PORT_DIRECTION;
tmp[1] = (char)direction;
usbprog_jtag_message(usbprog_jtag,tmp,2);
}
void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value)
{
char tmp[2];
tmp[0] = PORT_SET;
tmp[1] = (char)value;
usbprog_jtag_message(usbprog_jtag,tmp,2);
}
unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag)
{
char tmp[2];
tmp[0] = PORT_GET;
tmp[1] = 0x00;
return usbprog_jtag_message(usbprog_jtag,tmp,2);
}
void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value)
{
char tmp[3];
tmp[0] = PORT_SETBIT;
tmp[1] = (char)bit;
if(value==1)
tmp[2] = 0x01;
else
tmp[2] = 0x00;
usbprog_jtag_message(usbprog_jtag,tmp,3);
}
int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit)
{
char tmp[2];
tmp[0] = PORT_GETBIT;
tmp[1] = (char)bit;
if(usbprog_jtag_message(usbprog_jtag,tmp,2)>0)
return 1;
else
return 0;
}
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