+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2007-2010 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
-/* This file supports the zy1000 debugger:
- *
- * http://www.ultsol.com/index.php/component/content/article/8/33-zylin-zy1000-jtag-probe
- *
- * The zy1000 is a standalone debugger that has a web interface and
- * requires no drivers on the developer host as all communication
- * is via TCP/IP. The zy1000 gets it performance(~400-700kBytes/s
- * DCC downloads @ 16MHz target) as it has an FPGA to hardware
- * accelerate the JTAG commands, while offering *very* low latency
- * between OpenOCD and the FPGA registers.
- *
- * The disadvantage of the zy1000 is that it has a feeble CPU compared to
- * a PC(ca. 50-500 DMIPS depending on how one counts it), whereas a PC
- * is on the order of 10000 DMIPS(i.e. at a factor of 20-200).
- *
- * The zy1000 revc hardware is using an Altera Nios CPU, whereas the
- * revb is using ARM7 + Xilinx.
- *
- * See Zylin web pages or contact Zylin for more information.
- *
- * The reason this code is in OpenOCD rather than OpenOCD linked with the
- * ZY1000 code is that OpenOCD is the long road towards getting
- * libopenocd into place. libopenocd will support both low performance,
- * low latency systems(embedded) and high performance high latency
- * systems(PCs).
- */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pthread.h>
-
-#include <target/embeddedice.h>
-#include <jtag/minidriver.h>
-#include <jtag/interface.h>
-#include <time.h>
-#include <helper/time_support.h>
-
-#include <netinet/tcp.h>
-
-/* Assume we're connecting to a revc w/60MHz clock. */
-#define ZYLIN_KHZ 60000
-
-/* The software needs to check if it's in RCLK mode or not */
-static bool zy1000_rclk;
-
-static int zy1000_khz(int khz, int *jtag_speed)
-{
- if (khz == 0)
- *jtag_speed = 0;
- else {
- int speed;
- /* Round speed up to nearest divisor.
- *
- * E.g. 16000kHz
- * (64000 + 15999) / 16000 = 4
- * (4 + 1) / 2 = 2
- * 2 * 2 = 4
- *
- * 64000 / 4 = 16000
- *
- * E.g. 15999
- * (64000 + 15998) / 15999 = 5
- * (5 + 1) / 2 = 3
- * 3 * 2 = 6
- *
- * 64000 / 6 = 10666
- *
- */
- speed = (ZYLIN_KHZ + (khz - 1)) / khz;
- speed = (speed + 1) / 2;
- speed *= 2;
- if (speed > 8190) {
- /* maximum dividend */
- speed = 8190;
- }
- *jtag_speed = speed;
- }
- return ERROR_OK;
-}
-
-static int zy1000_speed_div(int speed, int *khz)
-{
- if (speed == 0)
- *khz = 0;
- else
- *khz = ZYLIN_KHZ / speed;
-
- return ERROR_OK;
-}
-
-static bool readPowerDropout(void)
-{
- uint32_t state;
- /* sample and clear power dropout */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x80);
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, state);
- bool powerDropout;
- powerDropout = (state & 0x80) != 0;
- return powerDropout;
-}
-
-
-static bool readSRST(void)
-{
- uint32_t state;
- /* sample and clear SRST sensing */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000040);
- ZY1000_PEEK(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;
-}
-
-/* Wait for SRST to assert or deassert */
-static void waitSRST(bool asserted)
-{
- bool first = true;
- int64_t start = 0;
- int64_t total = 0;
- const char *mode = asserted ? "assert" : "deassert";
-
- for (;; ) {
- bool srstAsserted = readSRST();
- if ((asserted && srstAsserted) || (!asserted && !srstAsserted)) {
- if (total > 1)
- LOG_USER("SRST took %dms to %s", (int)total, mode);
- break;
- }
-
- if (first) {
- first = false;
- start = timeval_ms();
- }
-
- total = timeval_ms() - start;
-
- keep_alive();
-
- if (total > 5000) {
- LOG_ERROR("SRST took too long to %s: %" PRId64 "ms", mode, total);
- break;
- }
- }
-}
-
-void zy1000_reset(int trst, int srst)
-{
- LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
-
- /* flush the JTAG FIFO. Not flushing the queue before messing with
- * reset has such interesting bugs as causing hard to reproduce
- * RCLK bugs as RCLK will stop responding when TRST is asserted
- */
- waitIdle();
-
- 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);
-
- waitSRST(true);
- }
-
- 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))) {
- /* 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 && ((jtag_get_reset_config() & RESET_TRST_PULLS_SRST) == 0)) ||
- (!srst && !trst && (jtag_get_reset_config() & RESET_TRST_PULLS_SRST)))
- waitSRST(false);
-}
-
-int zy1000_speed(int speed)
-{
- /* flush JTAG master FIFO before setting speed */
- waitIdle();
-
- zy1000_rclk = false;
-
- if (speed == 0) {
- /*0 means RCLK*/
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
- zy1000_rclk = true;
- LOG_DEBUG("jtag_speed using RCLK");
- } else {
- if (speed > 8190 || speed < 2) {
- LOG_USER(
- "valid ZY1000 jtag_speed=[8190,2]. With divisor is %dkHz / even values between 8190-2, i.e. min %dHz, max %dMHz",
- ZYLIN_KHZ,
- (ZYLIN_KHZ * 1000) / 8190,
- ZYLIN_KHZ / (2 * 1000));
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-
- int khz;
- speed &= ~1;
- zy1000_speed_div(speed, &khz);
- LOG_USER("jtag_speed %d => JTAG clk=%d kHz", speed, khz);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed);
- }
- return ERROR_OK;
-}
-
-static bool savePower;
-
-static void setPower(bool power)
-{
- savePower = power;
- if (power)
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x8);
- else
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x8);
-}
-
-COMMAND_HANDLER(handle_power_command)
-{
- switch (CMD_ARGC) {
- case 1: {
- bool enable;
- COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
- setPower(enable);
- }
- /* fall through */
- case 0:
- LOG_INFO("Target power %s", savePower ? "on" : "off");
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-
- return ERROR_OK;
-}
-
-#if !BUILD_ZY1000_MASTER
-static char *tcp_server = "notspecified";
-static int jim_zy1000_server(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
-{
- if (argc != 2)
- return JIM_ERR;
-
- tcp_server = strdup(Jim_GetString(argv[1], NULL));
-
- 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;
- }
-
- bool dropout = readPowerDropout();
-
- Jim_SetResult(interp, Jim_NewIntObj(interp, dropout));
-
- return JIM_OK;
-}
-
-int zy1000_quit(void)
-{
-
- return ERROR_OK;
-}
-
-int interface_jtag_execute_queue(void)
-{
- uint32_t empty;
-
- waitIdle();
-
- /* We must make sure to write data read back to memory location before we return
- * from this fn
- */
- zy1000_flush_readqueue();
-
- /* and handle any callbacks... */
- zy1000_flush_callbackqueue();
-
- if (zy1000_rclk) {
- /* Only check for errors when using RCLK to speed up
- * jtag over TCP/IP
- */
- 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 void writeShiftValue(uint8_t *data, int bits);
-
-/* here we shuffle N bits out/in */
-static inline void scanBits(const uint8_t *out_value,
- uint8_t *in_value,
- int num_bits,
- bool pause_now,
- tap_state_t shiftState,
- tap_state_t end_state)
-{
- tap_state_t pause_state = shiftState;
- for (int j = 0; j < num_bits; j += 32) {
- int k = num_bits - j;
- if (k > 32) {
- k = 32;
- /* we have more to shift out */
- } else if (pause_now) {
- /* this was the last to shift out this time */
- pause_state = end_state;
- }
-
- /* we have (num_bits + 7)/8 bytes of bits to toggle out. */
- /* bits are pushed out LSB to MSB */
- uint32_t value;
- value = 0;
- if (out_value != NULL) {
- for (int l = 0; l < k; l += 8)
- value |= out_value[(j + l)/8]<<l;
- }
- /* mask away unused bits for easier debugging */
- if (k < 32)
- value &= ~(((uint32_t)0xffffffff) << k);
- else {
- /* Shifting by >= 32 is not defined by the C standard
- * and will in fact shift by &0x1f bits on nios */
- }
-
- shiftValueInner(shiftState, pause_state, k, value);
-
- if (in_value != NULL)
- writeShiftValue(in_value + (j/8), k);
- }
-}
-
-static inline void scanFields(int num_fields,
- const struct scan_field *fields,
- tap_state_t shiftState,
- tap_state_t end_state)
-{
- for (int i = 0; i < num_fields; i++) {
- scanBits(fields[i].out_value,
- fields[i].in_value,
- fields[i].num_bits,
- (i == num_fields-1),
- shiftState,
- end_state);
- }
-}
-
-int interface_jtag_add_ir_scan(struct jtag_tap *active,
- const struct scan_field *fields,
- tap_state_t state)
-{
- int scan_size = 0;
- struct jtag_tap *tap, *nextTap;
- tap_state_t pause_state = TAP_IRSHIFT;
-
- for (tap = jtag_tap_next_enabled(NULL); tap != NULL; tap = nextTap) {
- nextTap = jtag_tap_next_enabled(tap);
- if (nextTap == NULL)
- pause_state = state;
- scan_size = tap->ir_length;
-
- /* search the list */
- if (tap == active) {
- scanFields(1, fields, TAP_IRSHIFT, pause_state);
- /* update device information */
- buf_cpy(fields[0].out_value, tap->cur_instr, scan_size);
-
- tap->bypass = 0;
- } else {
- /* if a device isn't listed, set it to BYPASS */
- assert(scan_size <= 32);
- shiftValueInner(TAP_IRSHIFT, pause_state, scan_size, 0xffffffff);
-
- /* Optimization code will check what the cur_instr is set to, so
- * we must set it to bypass value.
- */
- buf_set_ones(tap->cur_instr, tap->ir_length);
-
- tap->bypass = 1;
- }
- }
-
- return ERROR_OK;
-}
-
-int interface_jtag_add_plain_ir_scan(int num_bits,
- const uint8_t *out_bits,
- uint8_t *in_bits,
- tap_state_t state)
-{
- scanBits(out_bits, in_bits, num_bits, true, TAP_IRSHIFT, state);
- return ERROR_OK;
-}
-
-int interface_jtag_add_dr_scan(struct jtag_tap *active,
- int num_fields,
- const struct scan_field *fields,
- tap_state_t state)
-{
- struct jtag_tap *tap, *nextTap;
- tap_state_t pause_state = TAP_DRSHIFT;
- for (tap = jtag_tap_next_enabled(NULL); tap != NULL; tap = nextTap) {
- nextTap = jtag_tap_next_enabled(tap);
- if (nextTap == NULL)
- pause_state = state;
-
- /* Find a range of fields to write to this tap */
- if (tap == active) {
- assert(!tap->bypass);
-
- scanFields(num_fields, fields, TAP_DRSHIFT, pause_state);
- } else {
- /* Shift out a 0 for disabled tap's */
- assert(tap->bypass);
- shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);
- }
- }
- return ERROR_OK;
-}
-
-int interface_jtag_add_plain_dr_scan(int num_bits,
- const uint8_t *out_bits,
- uint8_t *in_bits,
- tap_state_t state)
-{
- scanBits(out_bits, in_bits, num_bits, true, TAP_DRSHIFT, state);
- return ERROR_OK;
-}
-
-int interface_jtag_add_tlr(void)
-{
- setCurrentState(TAP_RESET);
- return ERROR_OK;
-}
-
-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_add_tms_seq(unsigned num_bits, const uint8_t *seq, enum tap_state state)
-{
- /*wait for the fifo to be empty*/
- waitIdle();
-
- for (unsigned i = 0; i < num_bits; i++) {
- int tms;
-
- if (((seq[i/8] >> (i % 8)) & 1) == 0)
- tms = 0;
- else
- tms = 1;
-
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, tms);
- }
-
- waitIdle();
- if (state != TAP_INVALID)
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
- else {
- /* this would be normal if
- * we are switching to SWD mode */
- }
- return ERROR_OK;
-}
-
-int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
-{
- int state_count;
- int tms = 0;
-
- state_count = 0;
-
- tap_state_t cur_state = cmd_queue_cur_state;
-
- uint8_t seq[16];
- memset(seq, 0, sizeof(seq));
- assert(num_states < (int)((sizeof(seq) * 8)));
-
- 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);
- }
-
- seq[state_count/8] = seq[state_count/8] | (tms << (state_count % 8));
-
- cur_state = path[state_count];
- state_count++;
- num_states--;
- }
-
- return interface_add_tms_seq(state_count, seq, cur_state);
-}
-
-static void jtag_pre_post_bits(struct jtag_tap *tap, int *pre, int *post)
-{
- /* bypass bits before and after */
- int pre_bits = 0;
- int post_bits = 0;
-
- bool found = false;
- struct jtag_tap *cur_tap, *nextTap;
- for (cur_tap = jtag_tap_next_enabled(NULL); cur_tap != NULL; cur_tap = nextTap) {
- nextTap = jtag_tap_next_enabled(cur_tap);
- if (cur_tap == tap)
- found = true;
- else {
- if (found)
- post_bits++;
- else
- pre_bits++;
- }
- }
- *pre = pre_bits;
- *post = post_bits;
-}
-
-void embeddedice_write_dcc(struct jtag_tap *tap,
- int reg_addr,
- const uint8_t *buffer,
- int little,
- int count)
-{
-#if 0
- int i;
- for (i = 0; i < count; i++) {
- embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer,
- little));
- buffer += 4;
- }
-#else
- int pre_bits;
- int post_bits;
- jtag_pre_post_bits(tap, &pre_bits, &post_bits);
-
- if ((pre_bits > 32) || (post_bits + 6 > 32)) {
- int i;
- for (i = 0; i < count; i++) {
- embeddedice_write_reg_inner(tap, reg_addr,
- fast_target_buffer_get_u32(buffer, little));
- buffer += 4;
- }
- } else {
- int i;
- for (i = 0; i < count; i++) {
- /* Fewer pokes means we get to use the FIFO more efficiently */
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32,
- fast_target_buffer_get_u32(buffer, little));
- /* Danger! here we need to exit into the TAP_IDLE state to make
- * DCC pick up this value.
- */
- shiftValueInner(TAP_DRSHIFT, TAP_IDLE, 6 + post_bits,
- (reg_addr | (1 << 5)));
- buffer += 4;
- }
- }
-#endif
-}
-
-int arm11_run_instr_data_to_core_noack_inner(struct jtag_tap *tap,
- uint32_t opcode,
- uint32_t *data,
- size_t count)
-{
- /* bypass bits before and after */
- int pre_bits;
- int post_bits;
- jtag_pre_post_bits(tap, &pre_bits, &post_bits);
- post_bits += 2;
-
- if ((pre_bits > 32) || (post_bits > 32)) {
- int arm11_run_instr_data_to_core_noack_inner_default(struct jtag_tap *tap,
- uint32_t opcode, uint32_t *data, size_t count);
- return arm11_run_instr_data_to_core_noack_inner_default(tap, opcode, data, count);
- } else {
- static const uint8_t zero;
-
- /* FIX!!!!!! the target_write_memory() API started this nasty problem
- * with unaligned uint32_t * pointers... */
- const uint8_t *t = (const uint8_t *)data;
-
- while (--count > 0) {
-#if 1
- /* Danger! This code doesn't update cmd_queue_cur_state, so
- * invoking jtag_add_pathmove() before jtag_add_dr_scan() after
- * this loop would fail!
- */
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
-
- uint32_t value;
- value = *t++;
- value |= (*t++<<8);
- value |= (*t++<<16);
- value |= (*t++<<24);
-
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, value);
- /* minimum 2 bits */
- shiftValueInner(TAP_DRSHIFT, TAP_DRPAUSE, post_bits, 0);
-
- /* copy & paste from arm11_dbgtap.c */
- /* TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT,
- * TAP_DRCAPTURE, TAP_DRSHIFT */
- /* KLUDGE! we have to flush the fifo or the Nios CPU locks up.
- * This is probably a bug in the Avalon bus(cross clocking bridge?)
- * or in the jtag registers module.
- */
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- /* we don't have to wait for the queue to empty here */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT);
- waitIdle();
-#else
- static const tap_state_t arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay[] = {
- TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE,
- TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
- };
-
- struct scan_field fields[2] = {
- { .num_bits = 32, .out_value = t },
- { .num_bits = 2, .out_value = &zero },
- };
- t += 4;
-
- jtag_add_dr_scan(tap,
- 2,
- fields,
- TAP_IDLE);
-
- jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
- arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
-#endif
- }
-
- struct scan_field fields[2] = {
- { .num_bits = 32, .out_value = t },
- { .num_bits = 2, .out_value = &zero },
- };
-
- /* This will happen on the last iteration updating cmd_queue_cur_state
- * so we don't have to track it during the common code path
- */
- jtag_add_dr_scan(tap,
- 2,
- fields,
- TAP_IDLE);
-
- return jtag_execute_queue();
- }
-}
-
-static const struct command_registration zy1000_commands[] = {
- {
- .name = "power",
- .handler = handle_power_command,
- .mode = COMMAND_ANY,
- .help = "Turn power switch to target on/off. "
- "With no arguments, prints status.",
- .usage = "('on'|'off)",
- },
-#if !BUILD_ZY1000_MASTER
- {
- .name = "zy1000_server",
- .mode = COMMAND_ANY,
- .jim_handler = jim_zy1000_server,
- .help = "Tcpip address for ZY1000 server.",
- .usage = "address",
- },
-#endif
- {
- .name = "powerstatus",
- .mode = COMMAND_ANY,
- .jim_handler = zylinjtag_Jim_Command_powerstatus,
- .help = "Returns power status of target",
- },
- COMMAND_REGISTRATION_DONE
-};
-
-#if !BUILD_ZY1000_MASTER
-
-static int tcp_ip = -1;
-
-/* Write large packets if we can */
-static size_t out_pos;
-static uint8_t out_buffer[16384];
-static size_t in_pos;
-static size_t in_write;
-static uint8_t in_buffer[16384];
-
-static bool flush_writes(void)
-{
- bool ok = (write(tcp_ip, out_buffer, out_pos) == (int)out_pos);
- out_pos = 0;
- return ok;
-}
-
-static bool writeLong(uint32_t l)
-{
- int i;
- for (i = 0; i < 4; i++) {
- uint8_t c = (l >> (i*8))&0xff;
- out_buffer[out_pos++] = c;
- if (out_pos >= sizeof(out_buffer)) {
- if (!flush_writes())
- return false;
- }
- }
- return true;
-}
-
-static bool readLong(uint32_t *out_data)
-{
- uint32_t data = 0;
- int i;
- for (i = 0; i < 4; i++) {
- uint8_t c;
- if (in_pos == in_write) {
- /* If we have some data that we can send, send them before
- * we wait for more data
- */
- if (out_pos > 0) {
- if (!flush_writes())
- return false;
- }
-
- /* read more */
- int t;
- t = read(tcp_ip, in_buffer, sizeof(in_buffer));
- if (t < 1)
- return false;
- in_write = (size_t) t;
- in_pos = 0;
- }
- c = in_buffer[in_pos++];
-
- data |= (c << (i*8));
- }
- *out_data = data;
- return true;
-}
-
-enum ZY1000_CMD {
- ZY1000_CMD_POKE = 0x0,
- ZY1000_CMD_PEEK = 0x8,
- ZY1000_CMD_SLEEP = 0x1,
- ZY1000_CMD_WAITIDLE = 2
-};
-
-#include <sys/socket.h> /* for socket(), connect(), send(), and recv() */
-#include <arpa/inet.h> /* for sockaddr_in and inet_addr() */
-
-/* We initialize this late since we need to know the server address
- * first.
- */
-static void tcpip_open(void)
-{
- if (tcp_ip >= 0)
- return;
-
- struct sockaddr_in echoServAddr;/* Echo server address */
-
- /* Create a reliable, stream socket using TCP */
- tcp_ip = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
- if (tcp_ip < 0) {
- fprintf(stderr, "Failed to connect to zy1000 server\n");
- exit(-1);
- }
-
- /* Construct the server address structure */
- memset(&echoServAddr, 0, sizeof(echoServAddr)); /* Zero out structure */
- echoServAddr.sin_family = AF_INET; /* Internet address family */
- echoServAddr.sin_addr.s_addr = inet_addr(tcp_server); /* Server IP address */
- echoServAddr.sin_port = htons(7777); /* Server port */
-
- /* Establish the connection to the echo server */
- if (connect(tcp_ip, (struct sockaddr *) &echoServAddr, sizeof(echoServAddr)) < 0) {
- fprintf(stderr, "Failed to connect to zy1000 server\n");
- exit(-1);
- }
-
- int flag = 1;
- setsockopt(tcp_ip, /* socket affected */
- IPPROTO_TCP, /* set option at TCP level */
- TCP_NODELAY, /* name of option */
- (char *)&flag, /* the cast is historical cruft */
- sizeof(int)); /* length of option value */
-
-}
-
-/* send a poke */
-void zy1000_tcpout(uint32_t address, uint32_t data)
-{
- tcpip_open();
- if (!writeLong((ZY1000_CMD_POKE << 24) | address) || !writeLong(data)) {
- fprintf(stderr, "Could not write to zy1000 server\n");
- exit(-1);
- }
-}
-
-/* By sending the wait to the server, we avoid a readback
- * of status. Radically improves performance for this operation
- * with long ping times.
- */
-void waitIdle(void)
-{
- tcpip_open();
- if (!writeLong((ZY1000_CMD_WAITIDLE << 24))) {
- fprintf(stderr, "Could not write to zy1000 server\n");
- exit(-1);
- }
-}
-
-uint32_t zy1000_tcpin(uint32_t address)
-{
- tcpip_open();
-
- zy1000_flush_readqueue();
-
- uint32_t data;
- if (!writeLong((ZY1000_CMD_PEEK << 24) | address) || !readLong(&data)) {
- fprintf(stderr, "Could not read from zy1000 server\n");
- exit(-1);
- }
- return data;
-}
-
-int interface_jtag_add_sleep(uint32_t us)
-{
- tcpip_open();
- if (!writeLong((ZY1000_CMD_SLEEP << 24)) || !writeLong(us)) {
- fprintf(stderr, "Could not read from zy1000 server\n");
- exit(-1);
- }
- return ERROR_OK;
-}
-
-/* queue a readback */
-#define readqueue_size 16384
-static struct {
- uint8_t *dest;
- int bits;
-} readqueue[readqueue_size];
-
-static int readqueue_pos;
-
-/* flush the readqueue, this means reading any data that
- * we're expecting and store them into the final position
- */
-void zy1000_flush_readqueue(void)
-{
- if (readqueue_pos == 0) {
- /* simply debugging by allowing easy breakpoints when there
- * is something to do. */
- return;
- }
- int i;
- tcpip_open();
- for (i = 0; i < readqueue_pos; i++) {
- uint32_t value;
- if (!readLong(&value)) {
- fprintf(stderr, "Could not read from zy1000 server\n");
- exit(-1);
- }
-
- uint8_t *in_value = readqueue[i].dest;
- int k = readqueue[i].bits;
-
- /* we're shifting in data to MSB, shift data to be aligned for returning the value */
- value >>= 32-k;
-
- for (int l = 0; l < k; l += 8)
- in_value[l/8] = (value >> l)&0xff;
- }
- readqueue_pos = 0;
-}
-
-/* By queuing the callback's we avoid flushing the
- * read queue until jtag_execute_queue(). This can
- * reduce latency dramatically for cases where
- * callbacks are used extensively.
-*/
-#define callbackqueue_size 128
-static struct callbackentry {
- jtag_callback_t callback;
- jtag_callback_data_t data0;
- jtag_callback_data_t data1;
- jtag_callback_data_t data2;
- jtag_callback_data_t data3;
-} callbackqueue[callbackqueue_size];
-
-static int callbackqueue_pos;
-
-void zy1000_jtag_add_callback4(jtag_callback_t callback,
- jtag_callback_data_t data0,
- jtag_callback_data_t data1,
- jtag_callback_data_t data2,
- jtag_callback_data_t data3)
-{
- if (callbackqueue_pos >= callbackqueue_size)
- zy1000_flush_callbackqueue();
-
- callbackqueue[callbackqueue_pos].callback = callback;
- callbackqueue[callbackqueue_pos].data0 = data0;
- callbackqueue[callbackqueue_pos].data1 = data1;
- callbackqueue[callbackqueue_pos].data2 = data2;
- callbackqueue[callbackqueue_pos].data3 = data3;
- callbackqueue_pos++;
-
- /* KLUDGE!
- * make callbacks synchronous for now as minidriver requires callback
- * to be synchronous.
- *
- * We can get away with making read and writes asynchronous so we
- * don't completely kill performance.
- */
- zy1000_flush_callbackqueue();
-}
-
-static int zy1000_jtag_convert_to_callback4(jtag_callback_data_t data0,
- jtag_callback_data_t data1,
- jtag_callback_data_t data2,
- jtag_callback_data_t data3)
-{
- ((jtag_callback1_t)data1)(data0);
- return ERROR_OK;
-}
-
-void zy1000_jtag_add_callback(jtag_callback1_t callback, jtag_callback_data_t data0)
-{
- zy1000_jtag_add_callback4(zy1000_jtag_convert_to_callback4,
- data0,
- (jtag_callback_data_t)callback,
- 0,
- 0);
-}
-
-void zy1000_flush_callbackqueue(void)
-{
- /* we have to flush the read queue so we have access to
- the data the callbacks will use
- */
- zy1000_flush_readqueue();
- int i;
- for (i = 0; i < callbackqueue_pos; i++) {
- struct callbackentry *entry = &callbackqueue[i];
- jtag_set_error(entry->callback(entry->data0, entry->data1, entry->data2,
- entry->data3));
- }
- callbackqueue_pos = 0;
-}
-
-static void writeShiftValue(uint8_t *data, int bits)
-{
- waitIdle();
-
- if (!writeLong((ZY1000_CMD_PEEK << 24) | (ZY1000_JTAG_BASE + 0xc))) {
- fprintf(stderr, "Could not read from zy1000 server\n");
- exit(-1);
- }
-
- if (readqueue_pos >= readqueue_size)
- zy1000_flush_readqueue();
-
- readqueue[readqueue_pos].dest = data;
- readqueue[readqueue_pos].bits = bits;
- readqueue_pos++;
-
- /* KLUDGE!!! minidriver requires readqueue to be synchronous */
- zy1000_flush_readqueue();
-}
-
-#else
-
-static void writeShiftValue(uint8_t *data, int bits)
-{
- uint32_t value;
- waitIdle();
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
- VERBOSE(LOG_INFO("getShiftValue %08x", value));
-
- /* data in, LSB to MSB */
- /* we're shifting in data to MSB, shift data to be aligned for returning the value */
- value >>= 32 - bits;
-
- for (int l = 0; l < bits; l += 8)
- data[l/8] = (value >> l)&0xff;
-}
-
-#endif
-
-#if BUILD_ZY1000_MASTER
-
-#ifdef WATCHDOG_BASE
-/* If we connect to port 8888 we must send a char every 10s or the board resets itself */
-static void watchdog_server(cyg_addrword_t data)
-{
- int so_reuseaddr_option = 1;
-
- int fd = socket(AF_INET, SOCK_STREAM, 0);
- if (fd == -1) {
- LOG_ERROR("error creating socket: %s", strerror(errno));
- exit(-1);
- }
-
- setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *) &so_reuseaddr_option,
- sizeof(int));
-
- struct sockaddr_in sin;
- unsigned int address_size;
- address_size = sizeof(sin);
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = INADDR_ANY;
- sin.sin_port = htons(8888);
-
- if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1) {
- LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
- exit(-1);
- }
-
- if (listen(fd, 1) == -1) {
- LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
- exit(-1);
- }
-
-
- for (;; ) {
- int watchdog_ip = accept(fd, (struct sockaddr *) &sin, &address_size);
-
- /* Start watchdog, must be reset every 10 seconds. */
- HAL_WRITE_UINT32(WATCHDOG_BASE + 4, 4);
-
- if (watchdog_ip < 0) {
- LOG_ERROR("couldn't open watchdog socket: %s", strerror(errno));
- exit(-1);
- }
-
- int flag = 1;
- setsockopt(watchdog_ip, /* socket affected */
- IPPROTO_TCP, /* set option at TCP level */
- TCP_NODELAY, /* name of option */
- (char *)&flag, /* the cast is historical cruft */
- sizeof(int)); /* length of option value */
-
-
- char buf;
- for (;; ) {
- if (read(watchdog_ip, &buf, 1) == 1) {
- /* Reset timer */
- HAL_WRITE_UINT32(WATCHDOG_BASE + 8, 0x1234);
- /* Echo so we can telnet in and see that resetting works */
- write(watchdog_ip, &buf, 1);
- } else {
- /* Stop tickling the watchdog, the CPU will reset in < 10 seconds
- * now.
- */
- return;
- }
-
- }
-
- /* Never reached */
- }
-}
-#endif
-
-#endif
-
-#if BUILD_ZY1000_MASTER
-int interface_jtag_add_sleep(uint32_t us)
-{
- jtag_sleep(us);
- return ERROR_OK;
-}
-#endif
-
-#if BUILD_ZY1000_MASTER
-volatile void *zy1000_jtag_master;
-#include <sys/mman.h>
-#endif
-
-int zy1000_init(void)
-{
-#if BUILD_ZY1000_MASTER
- int fd = open("/dev/mem", O_RDWR | O_SYNC);
- if (fd == -1) {
- LOG_ERROR("No access to /dev/mem");
- return ERROR_FAIL;
- }
-#ifndef REGISTERS_BASE
-#define REGISTERS_BASE 0x9002000
-#define REGISTERS_SPAN 128
-#endif
-
- zy1000_jtag_master = mmap(0,
- REGISTERS_SPAN,
- PROT_READ | PROT_WRITE,
- MAP_SHARED,
- fd,
- REGISTERS_BASE);
-
- if (zy1000_jtag_master == (void *) -1) {
- close(fd);
- LOG_ERROR("No access to /dev/mem");
- return ERROR_FAIL;
- }
-#endif
-
- 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);
-
- return ERROR_OK;
-}
-
-static struct jtag_interface zy1000_interface = {
- .supported = DEBUG_CAP_TMS_SEQ,
- .execute_queue = NULL,
-};
-
-struct adapter_driver zy1000_adapter_driver = {
- .name = "ZY1000",
- .transports = jtag_only,
- .commands = zy1000_commands,
-
- .init = zy1000_init,
- .quit = zy1000_quit,
- .speed = zy1000_speed,
- .khz = zy1000_khz,
- .speed_div = zy1000_speed_div,
- .power_dropout = zy1000_power_dropout,
- .srst_asserted = zy1000_srst_asserted,
-
- .jtag_ops = &zy1000_interface,
-};
projects / fw / openocd / commitdiff