dbd95cb8a2
- increase memory pseudo-image cache size to 1024 byte for improved trace analysis performance - added OpenOCD+trace as an ETM capture driver example implementation - new usbprog driver (thanks to Benedikt Sauter) git-svn-id: svn://svn.berlios.de/openocd/trunk@186 b42882b7-edfa-0310-969c-e2dbd0fdcd60
430 lines
12 KiB
C
430 lines
12 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <errno.h>
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#include "oocd_trace.h"
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#include "etm.h"
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#include "log.h"
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#include "types.h"
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#include "binarybuffer.h"
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#include "target.h"
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#include "register.h"
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#include "jtag.h"
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#include "arm7_9_common.h"
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#include <stdlib.h>
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int oocd_trace_read_reg(oocd_trace_t *oocd_trace, int reg, u32 *value)
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{
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size_t bytes_written, bytes_read, bytes_to_read;
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u8 cmd;
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cmd = 0x10 | (reg & 0x7);
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bytes_written = write(oocd_trace->tty_fd, &cmd, 1);
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bytes_to_read = 4;
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while (bytes_to_read > 0)
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{
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bytes_read = read(oocd_trace->tty_fd, ((u8*)value) + 4 - bytes_to_read, bytes_to_read);
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bytes_to_read -= bytes_read;
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}
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DEBUG("reg #%i: 0x%8.8x\n", reg, *value);
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return ERROR_OK;
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}
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int oocd_trace_write_reg(oocd_trace_t *oocd_trace, int reg, u32 value)
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{
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size_t bytes_written;
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u8 data[5];
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data[0] = 0x18 | (reg & 0x7);
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data[1] = value & 0xff;
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data[2] = (value & 0xff00) >> 8;
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data[3] = (value & 0xff0000) >> 16;
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data[4] = (value & 0xff000000) >> 24;
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bytes_written = write(oocd_trace->tty_fd, data, 5);
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DEBUG("reg #%i: 0x%8.8x\n", reg, value);
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return ERROR_OK;
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}
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int oocd_trace_read_memory(oocd_trace_t *oocd_trace, u8 *data, u32 address, u32 size)
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{
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size_t bytes_written, bytes_read, bytes_to_read;
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u8 cmd;
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int i;
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_ADDRESS, address);
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_SDRAM_COUNTER, size);
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cmd = 0x20;
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bytes_written = write(oocd_trace->tty_fd, &cmd, 1);
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bytes_to_read = size * 16;
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while (bytes_to_read > 0)
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{
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if ((bytes_read = read(oocd_trace->tty_fd,
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((u8*)data) + (size * 16) - bytes_to_read, bytes_to_read)) < 0)
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{
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DEBUG("read() returned %i (%s)", bytes_read, strerror(errno));
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}
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else
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bytes_to_read -= bytes_read;
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}
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return ERROR_OK;
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}
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int oocd_trace_init(etm_context_t *etm_ctx)
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{
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u8 trash[256];
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oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
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size_t bytes_written, bytes_read, bytes_to_read;
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oocd_trace->tty_fd = open(oocd_trace->tty, O_RDWR | O_NOCTTY | O_NONBLOCK);
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if(oocd_trace->tty_fd < 0)
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{
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ERROR("can't open tty");
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return ERROR_ETM_CAPTURE_INIT_FAILED;
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}
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/* clear input & output buffers, then switch to "blocking mode" */
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tcflush(oocd_trace->tty_fd, TCOFLUSH);
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tcflush(oocd_trace->tty_fd, TCIFLUSH);
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fcntl(oocd_trace->tty_fd, F_SETFL, fcntl(oocd_trace->tty_fd, F_GETFL) & ~O_NONBLOCK);
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tcgetattr(oocd_trace->tty_fd, &oocd_trace->oldtio); /* save current port settings */
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bzero(&oocd_trace->newtio, sizeof(oocd_trace->newtio));
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oocd_trace->newtio.c_cflag = CS8 | CLOCAL | CREAD | B2500000;
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oocd_trace->newtio.c_iflag = IGNPAR | IGNBRK | IXON | IXOFF;
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oocd_trace->newtio.c_oflag = 0;
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/* set input mode (non-canonical, no echo,...) */
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oocd_trace->newtio.c_lflag = 0;
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cfmakeraw(&oocd_trace->newtio);
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oocd_trace->newtio.c_cc[VTIME] = 1; /* inter-character timer used */
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oocd_trace->newtio.c_cc[VMIN] = 0; /* blocking read until 0 chars received */
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tcflush(oocd_trace->tty_fd, TCIFLUSH);
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tcsetattr(oocd_trace->tty_fd, TCSANOW, &oocd_trace->newtio);
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/* occasionally one bogus character is left in the input buffer
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* read up any leftover characters to ensure communication is in sync */
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while ((bytes_read = read(oocd_trace->tty_fd, trash, sizeof(trash))) > 0)
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{
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DEBUG("%i bytes read\n", bytes_read);
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};
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return ERROR_OK;
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}
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trace_status_t oocd_trace_status(etm_context_t *etm_ctx)
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{
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oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
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u32 status;
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oocd_trace_read_reg(oocd_trace, OOCD_TRACE_STATUS, &status);
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/* if tracing is currently idle, return this information */
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if (etm_ctx->capture_status == TRACE_IDLE)
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{
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return etm_ctx->capture_status;
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}
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else if (etm_ctx->capture_status & TRACE_RUNNING)
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{
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/* check Full bit to identify an overflow */
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if (status & 0x4)
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etm_ctx->capture_status |= TRACE_OVERFLOWED;
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/* check Triggered bit to identify trigger condition */
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if (status & 0x2)
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etm_ctx->capture_status |= TRACE_TRIGGERED;
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if (status & 0x1)
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{
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etm_ctx->capture_status &= ~TRACE_RUNNING;
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etm_ctx->capture_status |= TRACE_COMPLETED;
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}
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}
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return etm_ctx->capture_status;
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}
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int oocd_trace_read_trace(etm_context_t *etm_ctx)
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{
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oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
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u32 status, address;
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u32 first_frame = 0x0;
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u32 num_frames = 1048576;
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u8 *trace_data;
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int i;
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oocd_trace_read_reg(oocd_trace, OOCD_TRACE_STATUS, &status);
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oocd_trace_read_reg(oocd_trace, OOCD_TRACE_ADDRESS, &address);
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/* check if we overflowed, and adjust first frame of the trace accordingly
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* if we didn't overflow, read only up to the frame that would be written next,
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* i.e. don't read invalid entries
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*/
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if (status & 0x4)
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first_frame = address;
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else
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num_frames = address;
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/* read data into temporary array for unpacking
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* one frame from OpenOCD+trace corresponds to 16 trace cycles
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*/
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trace_data = malloc(sizeof(u8) * num_frames * 16);
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oocd_trace_read_memory(oocd_trace, trace_data, first_frame, num_frames);
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if (etm_ctx->trace_depth > 0)
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{
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free(etm_ctx->trace_data);
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}
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etm_ctx->trace_depth = num_frames * 16;
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etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
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for (i = 0; i < num_frames * 16; i++)
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{
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etm_ctx->trace_data[i].pipestat = (trace_data[i] & 0x7);
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etm_ctx->trace_data[i].packet = (trace_data[i] & 0x78) >> 3;
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etm_ctx->trace_data[i].flags = 0;
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if ((trace_data[i] & 0x80) >> 7)
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{
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etm_ctx->trace_data[i].flags |= ETMV1_TRACESYNC_CYCLE;
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}
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if (etm_ctx->trace_data[i].pipestat == STAT_TR)
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{
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etm_ctx->trace_data[i].pipestat = etm_ctx->trace_data[i].packet & 0x7;
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etm_ctx->trace_data[i].flags |= ETMV1_TRIGGER_CYCLE;
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}
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}
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free(trace_data);
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return ERROR_OK;
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}
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int oocd_trace_start_capture(etm_context_t *etm_ctx)
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{
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oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
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u32 control = 0x1; /* 0x1: enabled */
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u32 trigger_count;
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if (((etm_ctx->portmode & ETM_PORT_MODE_MASK) != ETM_PORT_NORMAL)
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|| ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) != ETM_PORT_4BIT))
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{
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DEBUG("OpenOCD+trace only supports normal 4-bit ETM mode");
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return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
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}
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if ((etm_ctx->portmode & ETM_PORT_CLOCK_MASK) == ETM_PORT_HALF_CLOCK)
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{
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control |= 0x2; /* half rate clock, capture at twice the clock rate */
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}
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/* OpenOCD+trace holds up to 16 million samples,
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* but trigger counts is set in multiples of 16 */
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trigger_count = (1048576 * etm_ctx->trigger_percent) / 100;
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/* capturing always starts at address zero */
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_ADDRESS, 0x0);
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_TRIGGER_COUNTER, trigger_count);
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_CONTROL, control);
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/* we're starting a new trace, initialize capture status */
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etm_ctx->capture_status = TRACE_RUNNING;
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return ERROR_OK;
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}
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int oocd_trace_stop_capture(etm_context_t *etm_ctx)
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{
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oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
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/* trace stopped, just clear running flag, but preserve others */
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etm_ctx->capture_status &= ~TRACE_RUNNING;
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oocd_trace_write_reg(oocd_trace, OOCD_TRACE_CONTROL, 0x0);
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return ERROR_OK;
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}
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etm_capture_driver_t oocd_trace_capture_driver =
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{
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.name = "oocd_trace",
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.register_commands = oocd_trace_register_commands,
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.init = oocd_trace_init,
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.status = oocd_trace_status,
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.start_capture = oocd_trace_start_capture,
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.stop_capture = oocd_trace_stop_capture,
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.read_trace = oocd_trace_read_trace,
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};
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int handle_oocd_trace_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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target_t *target;
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armv4_5_common_t *armv4_5;
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arm7_9_common_t *arm7_9;
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if (argc != 2)
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{
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ERROR("incomplete 'oocd_trace config <target> <tty>' command");
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exit(-1);
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}
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target = get_current_target(cmd_ctx);
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if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
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{
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command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
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return ERROR_OK;
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}
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if (arm7_9->etm_ctx)
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{
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oocd_trace_t *oocd_trace = malloc(sizeof(oocd_trace_t));
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arm7_9->etm_ctx->capture_driver_priv = oocd_trace;
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oocd_trace->etm_ctx = arm7_9->etm_ctx;
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/* copy name of TTY device used to communicate with OpenOCD+trace */
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oocd_trace->tty = strndup(args[1], 256);
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}
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else
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{
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ERROR("target has no ETM defined, OpenOCD+trace left unconfigured");
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}
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return ERROR_OK;
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}
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int handle_oocd_trace_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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target_t *target;
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armv4_5_common_t *armv4_5;
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arm7_9_common_t *arm7_9;
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oocd_trace_t *oocd_trace;
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u32 status;
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target = get_current_target(cmd_ctx);
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if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
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{
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command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
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return ERROR_OK;
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}
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if (!arm7_9->etm_ctx)
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{
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command_print(cmd_ctx, "current target doesn't have an ETM configured");
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return ERROR_OK;
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}
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if (strcmp(arm7_9->etm_ctx->capture_driver->name, "oocd_trace") != 0)
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{
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command_print(cmd_ctx, "current target's ETM capture driver isn't 'oocd_trace'");
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return ERROR_OK;
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}
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oocd_trace = (oocd_trace_t*)arm7_9->etm_ctx->capture_driver_priv;
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oocd_trace_read_reg(oocd_trace, OOCD_TRACE_STATUS, &status);
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if (status & 0x8)
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command_print(cmd_ctx, "trace clock locked");
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else
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command_print(cmd_ctx, "no trace clock");
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return ERROR_OK;
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}
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int handle_oocd_trace_resync_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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target_t *target;
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armv4_5_common_t *armv4_5;
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arm7_9_common_t *arm7_9;
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oocd_trace_t *oocd_trace;
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u32 status;
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size_t bytes_written;
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u8 cmd_array[1];
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target = get_current_target(cmd_ctx);
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if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
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{
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command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
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return ERROR_OK;
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}
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if (!arm7_9->etm_ctx)
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{
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command_print(cmd_ctx, "current target doesn't have an ETM configured");
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return ERROR_OK;
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}
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if (strcmp(arm7_9->etm_ctx->capture_driver->name, "oocd_trace") != 0)
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{
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command_print(cmd_ctx, "current target's ETM capture driver isn't 'oocd_trace'");
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return ERROR_OK;
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}
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oocd_trace = (oocd_trace_t*)arm7_9->etm_ctx->capture_driver_priv;
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cmd_array[0] = 0xf0;
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bytes_written = write(oocd_trace->tty_fd, cmd_array, 1);
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command_print(cmd_ctx, "requesting traceclock resync");
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DEBUG("resyncing traceclk pll");
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return ERROR_OK;
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}
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int oocd_trace_register_commands(struct command_context_s *cmd_ctx)
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{
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command_t *oocd_trace_cmd;
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oocd_trace_cmd = register_command(cmd_ctx, NULL, "oocd_trace", NULL, COMMAND_ANY, "OpenOCD+trace");
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register_command(cmd_ctx, oocd_trace_cmd, "config", handle_oocd_trace_config_command, COMMAND_CONFIG, NULL);
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register_command(cmd_ctx, oocd_trace_cmd, "status", handle_oocd_trace_status_command, COMMAND_EXEC, "display OpenOCD+trace status");
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register_command(cmd_ctx, oocd_trace_cmd, "resync", handle_oocd_trace_resync_command, COMMAND_EXEC, "resync OpenOCD+trace capture clock");
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return ERROR_OK;
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}
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