diff options
Diffstat (limited to 'src/jtag/usbprog.c')
| -rw-r--r-- | src/jtag/usbprog.c | 632 |
1 files changed, 632 insertions, 0 deletions
diff --git a/src/jtag/usbprog.c b/src/jtag/usbprog.c new file mode 100644 index 00000000..4f7cfdd6 --- /dev/null +++ b/src/jtag/usbprog.c @@ -0,0 +1,632 @@ +/*************************************************************************** + * 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; +} + |