diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/vsllink.c | 226 |
1 files changed, 142 insertions, 84 deletions
diff --git a/src/jtag/vsllink.c b/src/jtag/vsllink.c index de4220f7..7c224443 100644 --- a/src/jtag/vsllink.c +++ b/src/jtag/vsllink.c @@ -44,7 +44,7 @@ #endif #ifdef _DEBUG_JTAG_IO_ -#define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr) +#define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr) #else #define DEBUG_JTAG_IO(expr ...) #endif @@ -54,7 +54,7 @@ u16 vsllink_pid; u8 vsllink_bulkout; u8 vsllink_bulkin; -#define VSLLINK_USB_TIMEOUT 5000 +#define VSLLINK_USB_TIMEOUT 10000 static int VSLLINK_BufferSize = 1024; @@ -76,7 +76,7 @@ static u8* vsllink_usb_out_buffer = NULL; #define VSLLINK_CMD_HW_SWDCMD 0xA2 #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00 -#define VSLLINK_CMDJTAGSEQ_TMS0BYTE 0x40 +#define VSLLINK_CMDJTAGSEQ_TMSCLOCK 0x40 #define VSLLINK_CMDJTAGSEQ_SCAN 0x80 #define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0 @@ -92,7 +92,7 @@ static u8* vsllink_usb_out_buffer = NULL; #define JTAG_PINMSK_TDO (1 << 7) -#define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_map[from]][tap_move_map[to]] +#define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_map[from]][tap_move_map[to]] /* VSLLINK_tap_move[i][j]: tap movement command to go from state i to state j * 0: Test-Logic-Reset @@ -206,6 +206,7 @@ void vsllink_end_state(enum tap_state state); void vsllink_state_move(void); void vsllink_path_move(int num_states, enum tap_state *path); void vsllink_runtest(int num_cycles); +void vsllink_stableclocks(int num_cycles, int tms); void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, scan_command_t *command); void vsllink_reset(int trst, int srst); void vsllink_simple_command(u8 command); @@ -257,7 +258,7 @@ int vsllink_execute_queue(void) enum scan_type type; u8 *buffer; - DEBUG_JTAG_IO("--------------------------------------------------------------------------------"); + DEBUG_JTAG_IO("--------------------------------- vsllink -------------------------------------"); vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD; vsllink_usb_out_buffer_idx = 3; @@ -332,7 +333,7 @@ int vsllink_execute_queue(void) DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst); vsllink_tap_execute(); - + if (cmd->cmd.reset->trst == 1) { cur_state = TAP_RESET; @@ -348,9 +349,33 @@ int vsllink_execute_queue(void) vsllink_tap_execute(); jtag_sleep(cmd->cmd.sleep->us); break; - + + case JTAG_STABLECLOCKS: + DEBUG_JTAG_IO("add %d clocks", cmd->cmd.stableclocks->num_cycles); + switch(cur_state) + { + case TAP_RESET: + // tms should be '1' to stay in TAP_RESET mode + scan_size = 1; + break; + case TAP_DRSHIFT: + case TAP_IDLE: + case TAP_DRPAUSE: + case TAP_IRSHIFT: + case TAP_IRPAUSE: + // in other mode, tms should be '0' + scan_size = 0; + break; /* above stable states are OK */ + default: + LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"", + jtag_state_name(cur_state) ); + exit(-1); + } + vsllink_stableclocks(cmd->cmd.stableclocks->num_cycles, scan_size); + break; + default: - LOG_ERROR("BUG: unknown JTAG command type encountered"); + LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd->type); exit(-1); } cmd = cmd->next; @@ -752,91 +777,93 @@ void vsllink_path_move(int num_states, enum tap_state *path) } } -void vsllink_runtest(int num_cycles) +void vsllink_stableclocks(int num_cycles, int tms) { int tms_len; - enum tap_state saved_end_state = end_state; + u16 tms_append_byte; - if (cur_state != TAP_IDLE) - { - // enter into IDLE state - vsllink_end_state(TAP_IDLE); - vsllink_state_move(); - } - else + if (vsllink_tms_data_len > 0) { - // cur_state == TAP_IDLE - if (vsllink_tms_data_len > 0) + // there are vsllink_tms_data_len more tms bits to be shifted + // so there are vsllink_tms_data_len + num_cycles tms bits in all + tms_len = vsllink_tms_data_len + num_cycles; + if (tms > 0) + { + // append '1' for tms + tms_append_byte = (u16)((((1 << num_cycles) - 1) << vsllink_tms_data_len) & 0xFFFF); + } + else + { + // append '0' for tms + tms_append_byte = 0; + } + if (tms_len <= 16) { - // there are vsllink_tms_data_len more tms bits to be shifted - // so there are vsllink_tms_data_len + num_cycles tms bits in all - tms_len = vsllink_tms_data_len + num_cycles; - if (tms_len <= 16) + // merge into last tms shift + if (tms_len < 8) { - // merge into last tms shift - if (tms_len < 8) + // just add to vsllink_tms_data_len + // same result if tun through + //vsllink_tms_data_len += num_cycles; + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= (u8)(tms_append_byte & 0xFF); + } + else if (tms_len == 8) + { + // end last tms shift command + // just reduce it, and append last tms byte + (*vsllink_tms_cmd_pos)--; + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (u8)(tms_append_byte & 0xFF); + } + else if (tms_len < 16) + { + if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK) { - // just add to vsllink_tms_data_len - // same result if tun through - //vsllink_tms_data_len += num_cycles; + // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most + // there is enought tms length in the current tms shift command + // increase the tms byte length by 1 and set the last byte to 0 + (*vsllink_tms_cmd_pos)++; + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (u8)(tms_append_byte & 0xFF); + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (u8)(tms_append_byte >> 8); } - else if (tms_len == 8) + else { - // end last tms shift command - // just reduce it, no need to append_tms + // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most + // not enough tms length in the current tms shift command + // so a new command should be added + // first decrease byte length of last tms shift command (*vsllink_tms_cmd_pos)--; - vsllink_usb_out_buffer_idx++; - } - else if (tms_len < 16) - { - if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK) - { - // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most - // there is enought tms length in the current tms shift command - // increase the tms byte length by 1 and set the last byte to 0 - (*vsllink_tms_cmd_pos)++; - vsllink_usb_out_buffer_idx++; - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0; - } - else - { - // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most - // not enough tms length in the current tms shift command - // so a new command should be added - // first decrease byte length of last tms shift command - (*vsllink_tms_cmd_pos)--; - // move the command pointer to the next empty position - vsllink_usb_out_buffer_idx++; - // add new command(3 bytes) - vsllink_tap_ensure_space(0, 3); - vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; - vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0; - } - } - else if (tms_len == 16) - { - // end last tms shift command - vsllink_usb_out_buffer_idx++; - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0; - } - - vsllink_tms_data_len = (vsllink_tms_data_len + num_cycles) & 7; - if (vsllink_tms_data_len == 0) - { - vsllink_tms_cmd_pos = NULL; + // append last tms byte and move the command pointer to the next empty position + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (u8)(tms_append_byte & 0xFF); + // add new command(3 bytes) + vsllink_tap_ensure_space(0, 3); + vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (u8)(tms_append_byte >> 8); } - num_cycles = 0; } - else + else if (tms_len == 16) { - vsllink_usb_out_buffer_idx++; - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0; + // end last tms shift command + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (u8)(tms_append_byte & 0xFF); + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (u8)(tms_append_byte >> 8); + } - num_cycles -= 16 - vsllink_tms_data_len; - vsllink_tms_data_len = 0; + vsllink_tms_data_len = tms_len & 7; + if (vsllink_tms_data_len == 0) + { vsllink_tms_cmd_pos = NULL; } + num_cycles = 0; + } + else + { + // more shifts will be needed + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (u8)(tms_append_byte & 0xFF); + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (u8)(tms_append_byte >> 8); + + num_cycles -= 16 - vsllink_tms_data_len; + vsllink_tms_data_len = 0; + vsllink_tms_cmd_pos = NULL; } } // from here vsllink_tms_data_len == 0 or num_cycles == 0 @@ -860,7 +887,15 @@ void vsllink_runtest(int num_cycles) vsllink_tap_ensure_space(1, 5); // if tms_len > 0, vsllink_tms_data_len == 0 // so just add new command - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMS0BYTE; + // LSB of the command byte is the tms value when do the shifting + if (tms > 0) + { + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK | 1; + } + else + { + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK; + } vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 0) & 0xff; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 8) & 0xff; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 16) & 0xff; @@ -873,20 +908,42 @@ void vsllink_runtest(int num_cycles) if (tms_len > 0xFFFF) { vsllink_tap_execute(); - vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD; - vsllink_usb_out_buffer_idx = 3; } } + // post-process vsllink_tms_data_len = num_cycles & 7; if (vsllink_tms_data_len > 0) { vsllink_tap_ensure_space(0, 3); vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; - vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0; + if (tms > 0) + { + // append '1' for tms + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (1 << vsllink_tms_data_len) - 1; + } + else + { + // append '0' for tms + vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0x00; + } } } +} + +void vsllink_runtest(int num_cycles) +{ + enum tap_state saved_end_state = end_state; + + if (cur_state != TAP_IDLE) + { + // enter into IDLE state + vsllink_end_state(TAP_IDLE); + vsllink_state_move(); + } + + vsllink_stableclocks(num_cycles, 0); // post-process // set end_state @@ -1122,8 +1179,6 @@ void vsllink_tap_ensure_space(int scans, int bytes) if (scans > available_scans || bytes > available_bytes) { vsllink_tap_execute(); - vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD; - vsllink_usb_out_buffer_idx = 3; } } @@ -1238,7 +1293,10 @@ int vsllink_tap_execute(void) vsllink_tap_init(); } - + + vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD; + vsllink_usb_out_buffer_idx = 3; + return ERROR_OK; } |