Re: [OpenOCD-user] OpenOCD JTAG Debugging with iMX8M Mini AMP and FTDI.

[Hiago F. <hia...@gm...>]

Hi Tommy,

Here is the schematic of the board I'm using:
[image: image.png]

This is the FTDI chip. Now I created this configuration file here:



















*adapter driver ftdiftdi vid_pid 0x0403 0x6011ftdi channel 1ftdi
layout_init 0x00f8 0x000b# only JTAG supportedtransport select jtag# set a
safe JTAG clock speed, can be overriddenadapter speed 1000# board has an
i.MX8MM with 4 Cortex-A53 coresset CHIPNAME imx8mmset CHIPCORES 4# Source
SOC Configurationsource [find target/imx8m.cfg]*

And I'm getting this error:






















*Open On-Chip Debugger 0.11.0+dev-00808-g9cd714cd1 (2022-08-19-13:38)

                       Licensed under GNU GPL v2

                                            For bug reports, read


http://openocd.org/doc/doxygen/bugs.html
<http://openocd.org/doc/doxygen/bugs.html>

              Info : Hardware thread awareness created

                                  Info : Listening on port 6666 for tcl
connections
                                                            Info :
Listening on port 4444 for telnet connections

              Info : clock speed 1000 kHz

                                 Info : JTAG tap: imx8mm.cpu tap/device
found: 0x5ba00477 (mfg: 0x23b (ARM Ltd), part: 0xba00, ver: 0x5)
                                                          Info :
imx8mm.a53.0: hardware has 6 breakpoints, 4 watchpoints

         Info : starting gdb server for imx8mm.a53.0 on 3333

                          Info : Listening on port 3333 for gdb
connections
                                                           Info : starting
gdb server for imx8mm.m4 on 3334
                                                                    Info :
Listening on port 3334 for gdb connections

           Info : gdb port disabled

                               Info : accepting 'gdb' connection on
tcp/3334
                                                      Error: Target not
examined yet

  Error executing event gdb-attach on target imx8mm.m4:



                                       Info : New GDB Connection: 1, Target
imx8mm.m4, state: examine deferred
                                                        Error: Target
imx8mm.m4 not examined yet, refuse gdb connection 1!

      Error: attempted 'gdb' connection rejected*

There is a cfg file from NXP that looks like the same I'm trying to do
here, but I'm not sure why my code isn't working:






























*# SPDX-License-Identifier: GPL-2.0-or-later## Configuration file for NXP
MC-IMX8MP-EVK on-board internal JTAG## Using this interface requires
enabling "remote mode" for the board using the# NXP bcu tool (see
https://github.com/NXPmicro/bcu <https://github.com/NXPmicro/bcu>)## bcu
set_gpio remote_en 1 -board=imx8mpevk## The REMOTE_EN gpio is accessible
through the same FTDI adapter but it's# behind an I2C GPIO
expander.#adapter driver ftdiftdi vid_pid 0x0403 0x6011ftdi channel 0ftdi
layout_init 0x00f8 0x000bftdi layout_signal RESET_B -data 0x0010 -oe
0x0010# Called SYS_nRST in schematicsftdi layout_signal nSRST -data 0x0020
-oe 0x0020ftdi layout_signal IO_nRST -data 0x0040 -oe 0x0040ftdi
layout_signal ONOFF_B -data 0x0080 -oe 0x0080ftdi layout_signal GPIO1 -data
0x0100 -oe 0x0100ftdi layout_signal GPIO2 -data 0x0200 -oe 0x0200ftdi
layout_signal GPIO3 -data 0x0400 -oe 0x0400ftdi layout_signal GPIO4 -data
0x0800 -oe 0x0800*

Do you know if I need to define all these layout_signals as well?

Thank you!

On Thu, Sep 1, 2022 at 2:41 PM Tommy Murphy <tom...@ho...>
wrote:

> Looks like a problem with the reset configuration?
>
>
> https://github.com/openocd-org/openocd/blob/6db57051d070fc8d6bb54d21413e5e8610972651/src/target/aarch64.c#L1966
>
> Maybe the except needs to use SRST?
>