I've reproduced this a few times with the following commands (openocd debug
output enabled)
```
openocd -f interface/jlink.cfg -c interface\ swd -f target/stm32f7x.cfg -d
```
```
# arm-none-eabi-gdb fw.elf
(gdb) load
(gdb) monitor tpiu config internal itm.fifo uart off 216000000
(gdb) load
```
Again, error output starts after the second `load`.
gdb output is:
```
Reading symbols from _b/boot.elf...done.
(gdb) target extended-remote :3333
Remote debugging using :3333
0x20000010 in ?? ()
(gdb) monitor tpiu config internal itm.fifo uart off 216000000
Can not obtain 30000000 trace port frequency from 216000000 TRACECLKIN
frequency, using 27000000 instead
(gdb) load
Loading section .vector_table, size 0x1f8 lma 0x8000000
Loading section .text, size 0x1518 lma 0x80001f8
Loading section .init_array, size 0x8 lma 0x8001710
Loading section .fini_array, size 0x4 lma 0x8001718
Loading section .rodata, size 0x4d4 lma 0x800171c
Loading section .data, size 0x434 lma 0x8001bf0
Loading section .build_info, size 0x40 lma 0x8002024
Loading section .note.gnu.build-id, size 0x24 lma 0x8002064
Loading section .build_info_suffix, size 0x4 lma 0x8002088
Loading section .ram_func, size 0x38 lma 0x800208c
Error finishing flash operation
(gdb)
```
(note that the openocd output repeats forever)
Attachments:
-
[openocd-debug-log-4.txt](https://sourceforge.net/p/openocd/tickets/_discuss/thread/6f40c90d/6f4c/attachment/openocd-debug-log-4.txt)
(141.9 kB; text/plain)
---
** [tickets:#184] jlink: failure after `load` when `tpiu` is used to enable
tracing**
**Status:** new
**Milestone:** 0.9.0
**Created:** Fri Apr 27, 2018 05:33 PM UTC by Cody Schafer
**Last Updated:** Fri Apr 27, 2018 05:46 PM UTC
**Owner:** nobody
**Attachments:**
-
[openocd.log](https://sourceforge.net/p/openocd/tickets/184/attachment/openocd.log)
(359.8 kB; text/x-log)
Log output attached. openocd is from today's master with a few patches to fix
undefined shifts applied.
I'm targeting a stm32f777bit board with a cortex debug+etm header. I'm using a
j-link plus (more details in log). I'm using a "J-Link adapter CortexM" to
connect the jlink to the board. gdb used is `arm-none-eabi-gdb 8.1-2` from arch
linux.
Using the gdb command `load` prior to `tpiu` works, but trying to `load` after
`tpiu` fails. Full commands below.
Reproduction steps:
1. run `openocd -f interface/jlink.cfg -c 'interface swd' -f
target/stm32f7x.cfg`
2. run `arm-none-eabi-gdb binary.elf`
3. In gdb, run:
`
target extended-remote :3333
monitor reset init
load
`
4. openocd appears to load the binary successfully.
5. In gdb, run:
`
monitor tpiu config internal itm.fifo uart off 216000000
load
`
6. openocd begins emitting errors (as seen in the log). The "Can not obtain..."
line is emitted after using the `tpiu` command. The `Padding image` starts
output of the load command.
Additional notes:
- `binary.elf` contains code with clocks the processor to 216MHz and
occasionally prints to ITM.
- normally, the gdbinit contains:
```
target extended-remote :3333
monitor reset init
monitor tpiu config internal itm.fifo uart off 216000000
monitor itm port 0 on
load
step
```
- using the above invocation with a st-link v2 works without issue (` openocd
-f interface/stlink.cfg -f target/stm32f7x.cfg`)
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