810 lines
17 KiB
C
810 lines
17 KiB
C
/***************************************************************************
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* Copyright (C) 2007-2008 by Øyvind Harboe *
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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 "embeddedice.h"
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#include "minidriver.h"
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#include "interface.h"
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#include <cyg/hal/hal_io.h> // low level i/o
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#include <cyg/hal/hal_diag.h>
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#define ZYLIN_VERSION "1.52"
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#define ZYLIN_DATE __DATE__
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#define ZYLIN_TIME __TIME__
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#define ZYLIN_OPENOCD "$Revision$"
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#define ZYLIN_OPENOCD_VERSION "Zylin JTAG ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE " " ZYLIN_TIME
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const char *zylin_config_dir="/config/settings";
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/* low level command set
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*/
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int zy1000_read(void);
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static void zy1000_write(int tck, int tms, int tdi);
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void zy1000_reset(int trst, int srst);
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int zy1000_speed(int speed);
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int zy1000_register_commands(struct command_context_s *cmd_ctx);
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int zy1000_init(void);
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int zy1000_quit(void);
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/* interface commands */
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int zy1000_handle_zy1000_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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static int zy1000_khz(int khz, int *jtag_speed)
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{
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if (khz==0)
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{
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*jtag_speed=0;
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}
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else
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{
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*jtag_speed=64000/khz;
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}
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return ERROR_OK;
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}
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static int zy1000_speed_div(int speed, int *khz)
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{
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if (speed==0)
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{
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*khz = 0;
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}
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else
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{
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*khz=64000/speed;
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}
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return ERROR_OK;
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}
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static bool readPowerDropout(void)
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{
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cyg_uint32 state;
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// sample and clear power dropout
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HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x80);
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HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
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bool powerDropout;
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powerDropout = (state & 0x80) != 0;
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return powerDropout;
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}
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static bool readSRST(void)
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{
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cyg_uint32 state;
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// sample and clear SRST sensing
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HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x00000040);
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HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
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bool srstAsserted;
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srstAsserted = (state & 0x40) != 0;
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return srstAsserted;
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}
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static int zy1000_srst_asserted(int *srst_asserted)
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{
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*srst_asserted=readSRST();
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return ERROR_OK;
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}
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static int zy1000_power_dropout(int *dropout)
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{
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*dropout=readPowerDropout();
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return ERROR_OK;
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}
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jtag_interface_t zy1000_interface =
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{
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.name = "ZY1000",
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.execute_queue = NULL,
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.speed = zy1000_speed,
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.register_commands = zy1000_register_commands,
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.init = zy1000_init,
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.quit = zy1000_quit,
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.khz = zy1000_khz,
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.speed_div = zy1000_speed_div,
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.power_dropout = zy1000_power_dropout,
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.srst_asserted = zy1000_srst_asserted,
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};
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static void zy1000_write(int tck, int tms, int tdi)
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{
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}
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int zy1000_read(void)
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{
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return -1;
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}
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extern bool readSRST(void);
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void zy1000_reset(int trst, int srst)
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{
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LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
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if(!srst)
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{
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ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000001);
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}
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else
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{
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/* Danger!!! if clk!=0 when in
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* idle in TAP_IDLE, reset halt on str912 will fail.
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*/
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ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000001);
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}
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if(!trst)
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{
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ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000002);
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}
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else
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{
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/* assert reset */
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ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000002);
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}
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if (trst||(srst&&(jtag_reset_config & RESET_SRST_PULLS_TRST)))
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{
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waitIdle();
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/* we're now in the RESET state until trst is deasserted */
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ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_RESET);
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} else
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{
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/* We'll get RCLK failure when we assert TRST, so clear any false positives here */
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ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
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}
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/* wait for srst to float back up */
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if (!srst)
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{
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int i;
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for (i=0; i<1000; i++)
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{
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// We don't want to sense our own reset, so we clear here.
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// There is of course a timing hole where we could loose
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// a "real" reset.
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if (!readSRST())
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break;
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/* wait 1ms */
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alive_sleep(1);
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}
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if (i==1000)
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{
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LOG_USER("SRST didn't deassert after %dms", i);
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} else if (i>1)
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{
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LOG_USER("SRST took %dms to deassert", i);
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}
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}
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}
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int zy1000_speed(int speed)
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{
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if(speed == 0)
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{
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/*0 means RCLK*/
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speed = 0;
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ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x100);
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LOG_DEBUG("jtag_speed using RCLK");
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}
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else
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{
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if(speed > 8190 || speed < 2)
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{
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LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
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return ERROR_INVALID_ARGUMENTS;
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}
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LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
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ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x100);
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ZY1000_POKE(ZY1000_JTAG_BASE+0x1c, speed&~1);
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}
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return ERROR_OK;
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}
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static bool savePower;
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static void setPower(bool power)
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{
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savePower = power;
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if (power)
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{
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HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x14, 0x8);
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} else
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{
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HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x8);
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}
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}
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int handle_power_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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if (argc > 1)
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{
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return ERROR_INVALID_ARGUMENTS;
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}
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if (argc == 1)
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{
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if (strcmp(args[0], "on") == 0)
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{
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setPower(1);
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}
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else if (strcmp(args[0], "off") == 0)
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{
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setPower(0);
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} else
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{
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command_print(cmd_ctx, "arg is \"on\" or \"off\"");
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return ERROR_INVALID_ARGUMENTS;
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}
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}
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command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
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return ERROR_OK;
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}
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/* Give TELNET a way to find out what version this is */
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static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
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{
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if ((argc < 1) || (argc > 2))
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return JIM_ERR;
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char buff[128];
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const char *version_str=NULL;
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if (argc == 1)
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{
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version_str=ZYLIN_OPENOCD_VERSION;
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} else
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{
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const char *str = Jim_GetString(argv[1], NULL);
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if (strcmp("openocd", str) == 0)
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{
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int revision;
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revision = atol(ZYLIN_OPENOCD+strlen("XRevision: "));
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sprintf(buff, "%d", revision);
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version_str=buff;
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}
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else if (strcmp("zy1000", str) == 0)
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{
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version_str=ZYLIN_VERSION;
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}
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else if (strcmp("date", str) == 0)
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{
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version_str=ZYLIN_DATE;
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}
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else
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{
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return JIM_ERR;
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}
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}
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Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
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return JIM_OK;
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}
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static int
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zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
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int argc,
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Jim_Obj * const *argv)
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{
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if (argc != 1)
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{
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Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
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return JIM_ERR;
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}
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cyg_uint32 status;
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ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, status);
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Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80)!=0));
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return JIM_OK;
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}
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int zy1000_register_commands(struct command_context_s *cmd_ctx)
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{
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register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
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"power <on/off> - turn power switch to target on/off. No arguments - print status.");
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Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
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Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
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return ERROR_OK;
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}
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int zy1000_init(void)
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{
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LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
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ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x30); // Turn on LED1 & LED2
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setPower(true); // on by default
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/* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
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zy1000_reset(0, 0);
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zy1000_speed(jtag_speed);
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return ERROR_OK;
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}
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int zy1000_quit(void)
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{
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return ERROR_OK;
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}
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int interface_jtag_execute_queue(void)
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{
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cyg_uint32 empty;
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waitIdle();
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ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, empty);
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/* clear JTAG error register */
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ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
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if ((empty&0x400)!=0)
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{
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LOG_WARNING("RCLK timeout");
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/* the error is informative only as we don't want to break the firmware if there
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* is a false positive.
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*/
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// return ERROR_FAIL;
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}
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return ERROR_OK;
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}
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static cyg_uint32 getShiftValue(void)
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{
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cyg_uint32 value;
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waitIdle();
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ZY1000_PEEK(ZY1000_JTAG_BASE+0xc, value);
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VERBOSE(LOG_INFO("getShiftValue %08x", value));
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return value;
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}
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#if 0
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static cyg_uint32 getShiftValueFlip(void)
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{
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cyg_uint32 value;
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waitIdle();
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ZY1000_PEEK(ZY1000_JTAG_BASE+0x18, value);
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VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
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return value;
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}
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#endif
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#if 0
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static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
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{
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VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
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cyg_uint32 a,b;
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a=state;
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b=endState;
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ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value);
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ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<15)|(repeat<<8)|(a<<4)|b);
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VERBOSE(getShiftValueFlip());
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}
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#endif
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extern int jtag_check_value(u8 *captured, void *priv);
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static __inline void scanFields(int num_fields, scan_field_t *fields, tap_state_t shiftState, tap_state_t end_state)
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{
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int i;
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int j;
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int k;
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for (i = 0; i < num_fields; i++)
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{
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cyg_uint32 value;
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static u8 *in_buff=NULL; /* pointer to buffer for scanned data */
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static int in_buff_size=0;
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u8 *inBuffer=NULL;
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// figure out where to store the input data
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int num_bits=fields[i].num_bits;
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if (fields[i].in_value!=NULL)
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{
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inBuffer=fields[i].in_value;
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}
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// here we shuffle N bits out/in
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j=0;
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while (j<num_bits)
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{
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tap_state_t pause_state;
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int l;
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k=num_bits-j;
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pause_state=(shiftState==TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
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if (k>32)
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{
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k=32;
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/* we have more to shift out */
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} else if (i == num_fields-1)
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{
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/* this was the last to shift out this time */
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pause_state=end_state;
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}
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// we have (num_bits+7)/8 bytes of bits to toggle out.
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// bits are pushed out LSB to MSB
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value=0;
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if (fields[i].out_value!=NULL)
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{
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for (l=0; l<k; l+=8)
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{
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value|=fields[i].out_value[(j+l)/8]<<l;
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}
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}
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/* mask away unused bits for easier debugging */
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value&=~(((u32)0xffffffff)<<k);
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shiftValueInner(shiftState, pause_state, k, value);
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if (inBuffer!=NULL)
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{
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// data in, LSB to MSB
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value=getShiftValue();
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// we're shifting in data to MSB, shift data to be aligned for returning the value
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value >>= 32-k;
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for (l=0; l<k; l+=8)
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{
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inBuffer[(j+l)/8]=(value>>l)&0xff;
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}
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}
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j+=k;
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}
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}
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}
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int interface_jtag_set_end_state(tap_state_t state)
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{
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return ERROR_OK;
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}
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int interface_jtag_add_ir_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
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{
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int j;
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int scan_size = 0;
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jtag_tap_t *tap, *nextTap;
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for(tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap=nextTap)
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{
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nextTap=jtag_tap_next_enabled(tap);
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tap_state_t end_state;
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if (nextTap==NULL)
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{
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end_state = state;
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} else
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{
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end_state = TAP_IRSHIFT;
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}
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int found = 0;
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scan_size = tap->ir_length;
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/* search the list */
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for (j=0; j < num_fields; j++)
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{
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if (tap == fields[j].tap)
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{
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found = 1;
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scanFields(1, fields+j, TAP_IRSHIFT, end_state);
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/* update device information */
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buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
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tap->bypass = 0;
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break;
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}
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}
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if (!found)
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{
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/* if a device isn't listed, set it to BYPASS */
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u8 ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
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scan_field_t tmp;
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memset(&tmp, 0, sizeof(tmp));
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tmp.out_value = ones;
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tmp.num_bits = scan_size;
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scanFields(1, &tmp, TAP_IRSHIFT, end_state);
|
|
/* update device information */
|
|
buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
|
|
tap->bypass = 1;
|
|
}
|
|
}
|
|
|
|
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, 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;
|
|
tap_state_t end_state;
|
|
if (nextTap==NULL)
|
|
{
|
|
end_state = state;
|
|
} else
|
|
{
|
|
end_state = TAP_DRSHIFT;
|
|
}
|
|
|
|
for (j=0; j < num_fields; j++)
|
|
{
|
|
if (tap == fields[j].tap)
|
|
{
|
|
found = 1;
|
|
|
|
scanFields(1, fields+j, TAP_DRSHIFT, end_state);
|
|
}
|
|
}
|
|
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, end_state);
|
|
}
|
|
else
|
|
{
|
|
}
|
|
}
|
|
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, 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;
|
|
u8 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(u32 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, u8 *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;
|
|
}
|
|
}
|
|
}
|
|
|
|
int loadFile(const char *fileName, void **data, int *len);
|
|
|
|
/* boolean parameter stored on config */
|
|
int boolParam(char *var)
|
|
{
|
|
bool result = false;
|
|
char *name = alloc_printf("%s/%s", zylin_config_dir, var);
|
|
if (name == NULL)
|
|
return result;
|
|
|
|
void *data;
|
|
int len;
|
|
if (loadFile(name, &data, &len) == ERROR_OK)
|
|
{
|
|
if (len > 1)
|
|
len = 1;
|
|
result = strncmp((char *) data, "1", len) == 0;
|
|
free(data);
|
|
}
|
|
free(name);
|
|
return result;
|
|
}
|
|
|
|
|