|
- /***************************************************************************
- * Copyright (C) 2007-2008 by Øyvind Harboe *
- * *
- * 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 "embeddedice.h"
- #include "minidriver.h"
- #include "interface.h"
-
- #include <cyg/hal/hal_io.h> // low level i/o
- #include <cyg/hal/hal_diag.h>
-
-
- #define ZYLIN_VERSION "1.54"
- #define ZYLIN_DATE __DATE__
- #define ZYLIN_TIME __TIME__
- #define ZYLIN_OPENOCD "$Revision$"
- #define ZYLIN_OPENOCD_VERSION "Zylin JTAG ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE " " ZYLIN_TIME
-
- /* low level command set
- */
- void zy1000_reset(int trst, int srst);
-
-
- int zy1000_speed(int speed);
- int zy1000_register_commands(struct command_context_s *cmd_ctx);
- int zy1000_init(void);
- int zy1000_quit(void);
-
- /* interface commands */
- int zy1000_handle_zy1000_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
- static int zy1000_khz(int khz, int *jtag_speed)
- {
- if (khz == 0)
- {
- *jtag_speed = 0;
- }
- else
- {
- *jtag_speed = 64000/khz;
- }
- return ERROR_OK;
- }
-
- static int zy1000_speed_div(int speed, int *khz)
- {
- if (speed == 0)
- {
- *khz = 0;
- }
- else
- {
- *khz = 64000/speed;
- }
-
- return ERROR_OK;
- }
-
- static bool readPowerDropout(void)
- {
- cyg_uint32 state;
- // sample and clear power dropout
- HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x80);
- HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
- bool powerDropout;
- powerDropout = (state & 0x80) != 0;
- return powerDropout;
- }
-
-
- static bool readSRST(void)
- {
- cyg_uint32 state;
- // sample and clear SRST sensing
- HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x00000040);
- HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
- bool srstAsserted;
- srstAsserted = (state & 0x40) != 0;
- return srstAsserted;
- }
-
- static int zy1000_srst_asserted(int *srst_asserted)
- {
- *srst_asserted = readSRST();
- return ERROR_OK;
- }
-
- static int zy1000_power_dropout(int *dropout)
- {
- *dropout = readPowerDropout();
- return ERROR_OK;
- }
-
-
- jtag_interface_t zy1000_interface =
- {
- .name = "ZY1000",
- .execute_queue = NULL,
- .speed = zy1000_speed,
- .register_commands = zy1000_register_commands,
- .init = zy1000_init,
- .quit = zy1000_quit,
- .khz = zy1000_khz,
- .speed_div = zy1000_speed_div,
- .power_dropout = zy1000_power_dropout,
- .srst_asserted = zy1000_srst_asserted,
- };
-
- void zy1000_reset(int trst, int srst)
- {
- LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
- if (!srst)
- {
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
- }
- else
- {
- /* Danger!!! if clk != 0 when in
- * idle in TAP_IDLE, reset halt on str912 will fail.
- */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
- }
-
- if (!trst)
- {
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
- }
- else
- {
- /* assert reset */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
- }
-
- if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
- {
- waitIdle();
- /* we're now in the RESET state until trst is deasserted */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
- } else
- {
- /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
- }
-
- /* wait for srst to float back up */
- if (!srst)
- {
- int i;
- for (i = 0; i < 1000; i++)
- {
- // We don't want to sense our own reset, so we clear here.
- // There is of course a timing hole where we could loose
- // a "real" reset.
- if (!readSRST())
- break;
-
- /* wait 1ms */
- alive_sleep(1);
- }
-
- if (i == 1000)
- {
- LOG_USER("SRST didn't deassert after %dms", i);
- } else if (i > 1)
- {
- LOG_USER("SRST took %dms to deassert", i);
- }
- }
- }
-
- int zy1000_speed(int speed)
- {
- if (speed == 0)
- {
- /*0 means RCLK*/
- speed = 0;
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
- LOG_DEBUG("jtag_speed using RCLK");
- }
- else
- {
- if (speed > 8190 || speed < 2)
- {
- LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
- return ERROR_INVALID_ARGUMENTS;
- }
-
- LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed&~1);
- }
- return ERROR_OK;
- }
-
- static bool savePower;
-
-
- static void setPower(bool power)
- {
- savePower = power;
- if (power)
- {
- HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x14, 0x8);
- } else
- {
- HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x8);
- }
- }
-
- int handle_power_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc > 1)
- {
- return ERROR_INVALID_ARGUMENTS;
- }
-
- if (argc == 1)
- {
- if (strcmp(args[0], "on") == 0)
- {
- setPower(1);
- }
- else if (strcmp(args[0], "off") == 0)
- {
- setPower(0);
- } else
- {
- command_print(cmd_ctx, "arg is \"on\" or \"off\"");
- return ERROR_INVALID_ARGUMENTS;
- }
- }
-
- command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
-
- return ERROR_OK;
- }
-
-
- /* Give TELNET a way to find out what version this is */
- static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
- {
- if ((argc < 1) || (argc > 2))
- return JIM_ERR;
- char buff[128];
- const char *version_str = NULL;
-
- if (argc == 1)
- {
- version_str = ZYLIN_OPENOCD_VERSION;
- } else
- {
- const char *str = Jim_GetString(argv[1], NULL);
- if (strcmp("openocd", str) == 0)
- {
- int revision;
- revision = atol(ZYLIN_OPENOCD + strlen("XRevision: "));
- sprintf(buff, "%d", revision);
- version_str = buff;
- }
- else if (strcmp("zy1000", str) == 0)
- {
- version_str = ZYLIN_VERSION;
- }
- else if (strcmp("date", str) == 0)
- {
- version_str = ZYLIN_DATE;
- }
- else if (strcmp("pcb", str) == 0)
- {
- #ifdef CYGPKG_HAL_NIOS2
- version_str="c";
- #else
- version_str="b";
- #endif
- }
- else
- {
- return JIM_ERR;
- }
- }
-
- Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
-
- return JIM_OK;
- }
-
-
- #ifdef CYGPKG_HAL_NIOS2
- static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
- {
- if (argc != 2)
- return JIM_ERR;
-
- int length;
- int stat;
- const char *str = Jim_GetString(argv[1], &length);
-
- /* BUG!!!! skip header! */
- void *firmware_address=0x4000000;
- int firmware_length=0x100000;
-
- if (length>firmware_length)
- return JIM_ERR;
-
- void *err_addr;
-
- if ((stat = flash_erase((void *)firmware_address, firmware_length, (void **)&err_addr)) != 0)
- {
- return JIM_ERR;
- }
-
- if ((stat = flash_program(firmware_address, str, length, (void **)&err_addr)) != 0)
- return JIM_ERR;
-
- return JIM_OK;
- }
- #endif
-
- static int
- zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
- int argc,
- Jim_Obj * const *argv)
- {
- if (argc != 1)
- {
- Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
- return JIM_ERR;
- }
-
- cyg_uint32 status;
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
-
- Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
-
- return JIM_OK;
- }
-
- int zy1000_register_commands(struct command_context_s *cmd_ctx)
- {
- register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
- "power <on/off> - turn power switch to target on/off. No arguments - print status.");
-
- Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
-
-
- Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
-
- #ifdef CYGPKG_HAL_NIOS2
- Jim_CreateCommand(interp, "updatezy1000firmware", jim_zy1000_writefirmware, NULL, NULL);
- #endif
-
-
- return ERROR_OK;
- }
-
-
-
-
- int zy1000_init(void)
- {
- LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
-
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
-
- setPower(true); // on by default
-
-
- /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
- zy1000_reset(0, 0);
- zy1000_speed(jtag_get_speed());
-
- return ERROR_OK;
- }
-
- int zy1000_quit(void)
- {
-
- return ERROR_OK;
- }
-
-
-
- int interface_jtag_execute_queue(void)
- {
- cyg_uint32 empty;
-
- waitIdle();
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
- /* clear JTAG error register */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
-
- if ((empty&0x400) != 0)
- {
- LOG_WARNING("RCLK timeout");
- /* the error is informative only as we don't want to break the firmware if there
- * is a false positive.
- */
- // return ERROR_FAIL;
- }
- return ERROR_OK;
- }
-
-
-
-
-
- static cyg_uint32 getShiftValue(void)
- {
- cyg_uint32 value;
- waitIdle();
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
- VERBOSE(LOG_INFO("getShiftValue %08x", value));
- return value;
- }
- #if 0
- static cyg_uint32 getShiftValueFlip(void)
- {
- cyg_uint32 value;
- waitIdle();
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
- VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
- return value;
- }
- #endif
-
- #if 0
- static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
- {
- VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
- cyg_uint32 a,b;
- a = state;
- b = endState;
- ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
- VERBOSE(getShiftValueFlip());
- }
- #endif
-
- extern int jtag_check_value(uint8_t *captured, void *priv);
-
- static void gotoEndState(tap_state_t end_state)
- {
- setCurrentState(end_state);
- }
-
- static __inline void scanFields(int num_fields, const scan_field_t *fields, tap_state_t shiftState, int pause)
- {
- int i;
- int j;
- int k;
-
- for (i = 0; i < num_fields; i++)
- {
- cyg_uint32 value;
-
- uint8_t *inBuffer = NULL;
-
-
- // figure out where to store the input data
- int num_bits = fields[i].num_bits;
- if (fields[i].in_value != NULL)
- {
- inBuffer = fields[i].in_value;
- }
-
- // here we shuffle N bits out/in
- j = 0;
- while (j < num_bits)
- {
- tap_state_t pause_state;
- int l;
- k = num_bits-j;
- pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
- if (k > 32)
- {
- k = 32;
- /* we have more to shift out */
- } else if (pause&&(i == num_fields-1))
- {
- /* this was the last to shift out this time */
- pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
- }
-
- // we have (num_bits + 7)/8 bytes of bits to toggle out.
- // bits are pushed out LSB to MSB
- value = 0;
- if (fields[i].out_value != NULL)
- {
- for (l = 0; l < k; l += 8)
- {
- value|=fields[i].out_value[(j + l)/8]<<l;
- }
- }
- /* mask away unused bits for easier debugging */
- value&=~(((uint32_t)0xffffffff) << k);
-
- shiftValueInner(shiftState, pause_state, k, value);
-
- if (inBuffer != NULL)
- {
- // data in, LSB to MSB
- value = getShiftValue();
- // we're shifting in data to MSB, shift data to be aligned for returning the value
- value >>= 32-k;
-
- for (l = 0; l < k; l += 8)
- {
- inBuffer[(j + l)/8]=(value >> l)&0xff;
- }
- }
- j += k;
- }
- }
- }
-
- int interface_jtag_set_end_state(tap_state_t state)
- {
- return ERROR_OK;
- }
-
-
- int interface_jtag_add_ir_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
- {
-
- int j;
- int scan_size = 0;
- jtag_tap_t *tap, *nextTap;
- for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
- {
- nextTap = jtag_tap_next_enabled(tap);
- int pause = (nextTap==NULL);
-
- int found = 0;
-
- scan_size = tap->ir_length;
-
- /* search the list */
- for (j = 0; j < num_fields; j++)
- {
- if (tap == fields[j].tap)
- {
- found = 1;
-
- scanFields(1, fields + j, TAP_IRSHIFT, pause);
- /* update device information */
- buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
-
- tap->bypass = 0;
- break;
- }
- }
-
- if (!found)
- {
- /* if a device isn't listed, set it to BYPASS */
- uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
-
- scan_field_t tmp;
- memset(&tmp, 0, sizeof(tmp));
- tmp.out_value = ones;
- tmp.num_bits = scan_size;
- scanFields(1, &tmp, TAP_IRSHIFT, pause);
- /* update device information */
- buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
- tap->bypass = 1;
- }
- }
- gotoEndState(state);
-
- return ERROR_OK;
- }
-
-
-
-
-
- int interface_jtag_add_plain_ir_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
- {
- scanFields(num_fields, fields, TAP_IRSHIFT, 1);
- gotoEndState(state);
-
- return ERROR_OK;
- }
-
- /*extern jtag_command_t **jtag_get_last_command_p(void);*/
-
- int interface_jtag_add_dr_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
- {
-
- int j;
- jtag_tap_t *tap, *nextTap;
- for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
- {
- nextTap = jtag_tap_next_enabled(tap);
- int found = 0;
- int pause = (nextTap==NULL);
-
- for (j = 0; j < num_fields; j++)
- {
- if (tap == fields[j].tap)
- {
- found = 1;
-
- scanFields(1, fields+j, TAP_DRSHIFT, pause);
- }
- }
- if (!found)
- {
- scan_field_t tmp;
- /* program the scan field to 1 bit length, and ignore it's value */
- tmp.num_bits = 1;
- tmp.out_value = NULL;
- tmp.in_value = NULL;
-
- scanFields(1, &tmp, TAP_DRSHIFT, pause);
- }
- else
- {
- }
- }
- gotoEndState(state);
- return ERROR_OK;
- }
-
- int interface_jtag_add_plain_dr_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
- {
- scanFields(num_fields, fields, TAP_DRSHIFT, 1);
- gotoEndState(state);
- return ERROR_OK;
- }
-
-
- int interface_jtag_add_tlr()
- {
- setCurrentState(TAP_RESET);
- return ERROR_OK;
- }
-
-
-
-
- extern int jtag_nsrst_delay;
- extern int jtag_ntrst_delay;
-
- int interface_jtag_add_reset(int req_trst, int req_srst)
- {
- zy1000_reset(req_trst, req_srst);
- return ERROR_OK;
- }
-
- static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
- {
- /* num_cycles can be 0 */
- setCurrentState(clockstate);
-
- /* execute num_cycles, 32 at the time. */
- int i;
- for (i = 0; i < num_cycles; i += 32)
- {
- int num;
- num = 32;
- if (num_cycles-i < num)
- {
- num = num_cycles-i;
- }
- shiftValueInner(clockstate, clockstate, num, 0);
- }
-
- #if !TEST_MANUAL()
- /* finish in end_state */
- setCurrentState(state);
- #else
- tap_state_t t = TAP_IDLE;
- /* test manual drive code on any target */
- int tms;
- uint8_t tms_scan = tap_get_tms_path(t, state);
- int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
-
- for (i = 0; i < tms_count; i++)
- {
- tms = (tms_scan >> i) & 1;
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, tms);
- }
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
- #endif
-
-
- return ERROR_OK;
- }
-
- int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
- {
- return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
- }
-
- int interface_jtag_add_clocks(int num_cycles)
- {
- return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
- }
-
- int interface_jtag_add_sleep(uint32_t us)
- {
- jtag_sleep(us);
- return ERROR_OK;
- }
-
- int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
- {
- int state_count;
- int tms = 0;
-
- /*wait for the fifo to be empty*/
- waitIdle();
-
- state_count = 0;
-
- tap_state_t cur_state = cmd_queue_cur_state;
-
- while (num_states)
- {
- if (tap_state_transition(cur_state, false) == path[state_count])
- {
- tms = 0;
- }
- else if (tap_state_transition(cur_state, true) == path[state_count])
- {
- tms = 1;
- }
- else
- {
- LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
- exit(-1);
- }
-
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, tms);
-
- cur_state = path[state_count];
- state_count++;
- num_states--;
- }
-
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, cur_state);
- return ERROR_OK;
- }
-
-
-
- void embeddedice_write_dcc(jtag_tap_t *tap, int reg_addr, uint8_t *buffer, int little, int count)
- {
- // static int const reg_addr = 0x5;
- tap_state_t end_state = jtag_get_end_state();
- if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
- {
- /* better performance via code duplication */
- if (little)
- {
- int i;
- for (i = 0; i < count; i++)
- {
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
- shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
- buffer += 4;
- }
- } else
- {
- int i;
- for (i = 0; i < count; i++)
- {
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
- shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
- buffer += 4;
- }
- }
- }
- else
- {
- int i;
- for (i = 0; i < count; i++)
- {
- embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
- buffer += 4;
- }
- }
- }
-
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