diff options
Diffstat (limited to 'src/jtag/drivers/usbprog.c')
| -rw-r--r-- | src/jtag/drivers/usbprog.c | 660 |
1 files changed, 660 insertions, 0 deletions
diff --git a/src/jtag/drivers/usbprog.c b/src/jtag/drivers/usbprog.c new file mode 100644 index 00000000..204d0e2e --- /dev/null +++ b/src/jtag/drivers/usbprog.c @@ -0,0 +1,660 @@ +/*************************************************************************** + * Copyright (C) 2007 by Benedikt Sauter * + * sauter@ixbat.de * + * * + * 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. * + ***************************************************************************/ + +/* + * This file is based on Dominic Rath's amt_jtagaccel.c. + * + * usbprog is a free programming adapter. You can easily install + * different firmware versions from an "online pool" over USB. + * The adapter can be used for programming and debugging AVR and ARM + * processors, as USB to RS232 converter, as JTAG interface or as + * simple I/O interface (5 lines). + * + * http://www.embedded-projects.net/usbprog + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "interface.h" +#include "commands.h" +#include "usb_common.h" + + +#define VID 0x1781 +#define PID 0x0c63 + +/* Pins at usbprog */ +#define TDO_BIT 0 +#define TDI_BIT 3 +#define TCK_BIT 2 +#define TMS_BIT 1 + +static void usbprog_end_state(tap_state_t state); +static void usbprog_state_move(void); +static void usbprog_path_move(struct pathmove_command *cmd); +static void usbprog_runtest(int num_cycles); +static void usbprog_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size); + +#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 +#define WRITE_TMS_CHAIN 0x0A + +struct usbprog_jtag +{ + struct usb_dev_handle* usb_handle; +}; + +static struct usbprog_jtag * usbprog_jtag_handle; + +static struct usbprog_jtag* usbprog_jtag_open(void); +//static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag); +static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag); +static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen); + +static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size); +static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size); +static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size); +static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan); + +static char tms_chain[64]; +static int tms_chain_index; + +static void usbprog_jtag_tms_collect(char tms_scan); +static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag); + +static void usbprog_write(int tck, int tms, int tdi); +static void usbprog_reset(int trst, int srst); + +static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction); +static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value); +//static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag); +static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value); +//static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit); + +static int usbprog_speed(int speed) +{ + return ERROR_OK; +} + +static int usbprog_execute_queue(void) +{ + struct jtag_command *cmd = jtag_command_queue; /* currently processed command */ + int scan_size; + enum scan_type type; + uint8_t *buffer; + + while (cmd) + { + switch (cmd->type) + { + case JTAG_RESET: +#ifdef _DEBUG_JTAG_IO_ + LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst); +#endif + if (cmd->cmd.reset->trst == 1) + { + tap_set_state(TAP_RESET); + } + usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst); + break; + case JTAG_RUNTEST: +#ifdef _DEBUG_JTAG_IO_ + LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state); +#endif + usbprog_end_state(cmd->cmd.runtest->end_state); + usbprog_runtest(cmd->cmd.runtest->num_cycles); + break; + case JTAG_STATEMOVE: +#ifdef _DEBUG_JTAG_IO_ + LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state); +#endif + usbprog_end_state(cmd->cmd.statemove->end_state); + usbprog_state_move(); + break; + case JTAG_PATHMOVE: +#ifdef _DEBUG_JTAG_IO_ + LOG_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_ + LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state); +#endif + 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_ + LOG_DEBUG("sleep %i", cmd->cmd.sleep->us); +#endif + jtag_sleep(cmd->cmd.sleep->us); + break; + default: + LOG_ERROR("BUG: unknown JTAG command type encountered"); + exit(-1); + } + + cmd = cmd->next; + } + + return ERROR_OK; +} + +static int usbprog_init(void) +{ + usbprog_jtag_handle = usbprog_jtag_open(); + + tms_chain_index = 0; + if (usbprog_jtag_handle == 0) + { + LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions."); + return ERROR_JTAG_INIT_FAILED; + } + + LOG_INFO("USB JTAG Interface ready!"); + + usbprog_jtag_init(usbprog_jtag_handle); + usbprog_reset(0, 0); + usbprog_write(0, 0, 0); + + return ERROR_OK; +} + +static int usbprog_quit(void) +{ + return ERROR_OK; +} + +/*************** jtag execute commands **********************/ +static void usbprog_end_state(tap_state_t state) +{ + if (tap_is_state_stable(state)) + tap_set_end_state(state); + else + { + LOG_ERROR("BUG: %i is not a valid end state", state); + exit(-1); + } +} + +static void usbprog_state_move(void) +{ + int i = 0, tms = 0; + uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state()); + int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state()); + + usbprog_jtag_write_tms(usbprog_jtag_handle, (char)tms_scan); + for (i = 0; i < tms_count; i++) + { + tms = (tms_scan >> i) & 1; + } + + tap_set_state(tap_get_end_state()); +} + +static void usbprog_path_move(struct pathmove_command *cmd) +{ + int num_states = cmd->num_states; + int state_count; + + /* There may be queued transitions, and before following a specified + path, we must flush those queued transitions */ + usbprog_jtag_tms_send(usbprog_jtag_handle); + + state_count = 0; + while (num_states) + { + if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count]) + { + /* LOG_INFO("1"); */ + usbprog_write(0, 0, 0); + usbprog_write(1, 0, 0); + } + else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count]) + { + /* LOG_INFO("2"); */ + usbprog_write(0, 1, 0); + usbprog_write(1, 1, 0); + } + else + { + LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(cmd->path[state_count])); + exit(-1); + } + + tap_set_state(cmd->path[state_count]); + state_count++; + num_states--; + } + + tap_set_end_state(tap_get_state()); +} + +static void usbprog_runtest(int num_cycles) +{ + int i; + + /* only do a state_move when we're not already in IDLE */ + if (tap_get_state() != TAP_IDLE) + { + usbprog_end_state(TAP_IDLE); + usbprog_state_move(); + } + + /* execute num_cycles */ + if (num_cycles > 0) + { + usbprog_jtag_tms_send(usbprog_jtag_handle); + usbprog_write(0, 0, 0); + } + else + { + usbprog_jtag_tms_send(usbprog_jtag_handle); + /* LOG_INFO("NUM CYCLES %i",num_cycles); */ + } + + for (i = 0; i < num_cycles; i++) + { + usbprog_write(1, 0, 0); + usbprog_write(0, 0, 0); + } + +#ifdef _DEBUG_JTAG_IO_ + LOG_DEBUG("runtest: cur_state %s end_state %s", tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state())); +#endif + + /* finish in end_state */ + /* + usbprog_end_state(saved_end_state); + if (tap_get_state() != tap_get_end_state()) + usbprog_state_move(); + */ +} + +static void usbprog_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size) +{ + tap_state_t saved_end_state = tap_get_end_state(); + + if (ir_scan) + usbprog_end_state(TAP_IRSHIFT); + else + usbprog_end_state(TAP_DRSHIFT); + + /* Only move if we're not already there */ + if (tap_get_state() != tap_get_end_state()) + usbprog_state_move(); + + usbprog_end_state(saved_end_state); + + usbprog_jtag_tms_send(usbprog_jtag_handle); + + void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer, int size); + switch (type) { + case SCAN_OUT: f = &usbprog_jtag_write_tdi; break; + case SCAN_IN: f = &usbprog_jtag_read_tdo; break; + case SCAN_IO: f = &usbprog_jtag_write_and_read; break; + default: + LOG_ERROR("unknown scan type: %i", type); + exit(-1); + } + f(usbprog_jtag_handle, (char *)buffer, scan_size); + + /* The adapter does the transition to PAUSE internally */ + if (ir_scan) + tap_set_state(TAP_IRPAUSE); + else + tap_set_state(TAP_DRPAUSE); + + if (tap_get_state() != tap_get_end_state()) + usbprog_state_move(); +} + +/*************** jtag wrapper functions *********************/ + +static void usbprog_write(int tck, int tms, int 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 */ +static void usbprog_reset(int trst, int srst) +{ + LOG_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 usb_bus *busses; + +struct usbprog_jtag* usbprog_jtag_open(void) +{ + usb_set_debug(10); + usb_init(); + + const uint16_t vids[] = { VID, 0 }; + const uint16_t pids[] = { PID, 0 }; + struct usb_dev_handle *dev; + if (jtag_usb_open(vids, pids, &dev) != ERROR_OK) + return NULL; + + struct usbprog_jtag *tmp = malloc(sizeof(struct usbprog_jtag)); + tmp->usb_handle = dev; + + usb_set_configuration(dev, 1); + usb_claim_interface(dev, 0); + usb_set_altinterface(dev, 0); + + return tmp; +} + +#if 0 +static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag) +{ + usb_close(usbprog_jtag->usb_handle); + free(usbprog_jtag); +} +#endif + +static 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) || (msg[0] == 1) || (msg[0] == 4) || (msg[0] == 0) || \ + (msg[0] == 6) || (msg[0] == 0x0A) || (msg[0] == 9)) + return 1; + if (res == msglen) + { + /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */ + 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; +} + +static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag) +{ + usbprog_jtag_set_direction(usbprog_jtag, 0xFE); +} + +static 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, 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++; + } + + if (usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000) == 64) + { + /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */ + usleep(1); + int timeout = 0; + while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 1000) < 1) + { + timeout++; + if (timeout > 10) + break; + } + + for (i = 0; i < loops; i++) + { + swap = tmp[3 + i]; + buffer[fillindex++] = swap; + } + } + } +} + +static 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, fillindex = 0, i, 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); + + /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */ + int timeout = 0; + usleep(1); + while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 10) < 1) + { + timeout++; + if (timeout > 10) + break; + } + + for (i = 0; i < loops; i++) + { + swap = tmp[3 + i]; + buffer[fillindex++] = swap; + } + } +} + +static 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, i, loops; + + /* 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); + } +} + +static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan) +{ + usbprog_jtag_tms_collect(tms_scan); +} + +static 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); +} + +static 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); +} + +#if 0 +static 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); +} +#endif + +static 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); +} + +#if 0 +static 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; +} +#endif + +static void usbprog_jtag_tms_collect(char tms_scan) +{ + tms_chain[tms_chain_index] = tms_scan; + tms_chain_index++; +} + +static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag) +{ + int i; + /* LOG_INFO("TMS SEND"); */ + if (tms_chain_index > 0) + { + char tmp[tms_chain_index + 2]; + tmp[0] = WRITE_TMS_CHAIN; + tmp[1] = (char)(tms_chain_index); + for (i = 0; i < tms_chain_index + 1; i++) + tmp[2 + i] = tms_chain[i]; + usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, tms_chain_index + 2, 1000); + tms_chain_index = 0; + } +} + +struct jtag_interface usbprog_interface = { + .name = "usbprog", + .execute_queue = &usbprog_execute_queue, + .speed = &usbprog_speed, + .init = &usbprog_init, + .quit = &usbprog_quit + }; |