[openocd:tickets] #366 Cannot Connect to A53 Core of AM65x_GP_EVM

[Ben R. <bsp...@us...>]

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** [tickets:#366] Cannot Connect to A53 Core of AM65x_GP_EVM**

**Status:** new
**Milestone:** 0.11.0
**Created:** Tue Oct 04, 2022 12:21 AM UTC by Ben Roytburd
**Last Updated:** Tue Oct 04, 2022 12:21 AM UTC
**Owner:** nobody


Cannot connect to A53 core of the AM65x_GP_EVM development board using OpenOCD, GDB, and XDS110 debugger. 

In I am using OpenOCD version 0.12.0-rc1 to try and connect to the AM65x_GP_EVM platform (am6548). When I try to connect over GDB I get the following error (3334 is the A53_0 core):

~~~
(gdb) target extended-remote localhost:3334
Remote debugging using localhost:3334
Remote connection closed
(gdb)
~~~

I started OpenOCD using the command: `openocd -d -f "C:\Program Files (x86)\openocd-v0.12.0-rc1-i686-w64-mingw32\share\openocd\scripts\board\ti_am654evm.cfg" -c "gdb_breakpoint_override hard"`

Here is the OpenOCD log after I enter that target extended-remote command:


~~~
Info : 259 23165 server.c:90 add_connection(): accepting 'gdb' connection on tcp/3334
Debug: 260 23190 breakpoints.c:363 breakpoint_clear_target_internal(): Delete all breakpoints for target: am654.cpu.a53.0
Debug: 261 23233 breakpoints.c:543 watchpoint_clear_target(): Delete all watchpoints for target: am654.cpu.a53.0
Debug: 262 23242 target.c:1845 target_call_event_callbacks(): target event 22 (gdb-attach) for core am654.cpu.a53.0
Debug: 263 23248 target.c:5093 target_handle_event(): target(1): am654.cpu.a53.0 (aarch64) event: 22 (gdb-attach) action:
                        _cpu_no_smp_up
                        # gdb-attach default rule
                        halt 1000

Debug: 264 23253 command.c:155 script_debug(): command - target current
Debug: 265 23256 command.c:155 script_debug(): command - am654.cpu.a53.0 cget -type
Debug: 266 23259 command.c:155 script_debug(): command - am654.cpu.a53.0 arp_examine
Debug: 267 23262 arm_adi_v5.c:1095 dap_get_ap(): refcount AP#0x0 get 1
Debug: 268 23265 arm_adi_v5.c:1120 dap_put_ap(): refcount AP#0x0 put 0
Debug: 269 23266 arm_adi_v5.c:1095 dap_get_ap(): refcount AP#0x1 get 7
Debug: 270 23269 arm_adi_v5.c:1040 dap_find_get_ap(): Found MEM-AP APB2 or APB3 at AP index: 1 (IDR=0x54770002)
Debug: 271 23274 arm_adi_v5.c:826 mem_ap_init(): MEM_AP Packed Transfers: disabled
Debug: 272 23278 arm_adi_v5.c:837 mem_ap_init(): MEM_AP CFG: large data 0, long address 0, big-endian 0
Debug: 273 23281 adi_v5_jtag.c:651 jtagdp_transaction_endcheck(): jtag-dp: CTRL/STAT 0xf0000021
Error: 274 23283 adi_v5_jtag.c:662 jtagdp_transaction_endcheck(): JTAG-DP STICKY ERROR
Debug: 275 23286 aarch64.c:2591 aarch64_examine_first(): Examine oslock failed
User : 276 23289 target.c:5118 target_handle_event(): Error executing event gdb-attach on target am654.cpu.a53.0:
C:/Program Files (x86)/openocd-v0.12.0-rc1-i686-w64-mingw32/bin/../share/openocd/scripts/target/ti_k3.cfg:198: Error:
in procedure '_cpu_no_smp_up' called at file "C:/Program Files (x86)/openocd-v0.12.0-rc1-i686-w64-mingw32/bin/../share/openocd/scripts/target/ti_k3.cfg", line 226
at file "C:/Program Files (x86)/openocd-v0.12.0-rc1-i686-w64-mingw32/bin/../share/openocd/scripts/target/ti_k3.cfg", line 198
Info : 277 23305 gdb_server.c:1070 gdb_new_connection(): New GDB Connection: 1, Target am654.cpu.a53.0, state: examine deferred
Error: 278 23309 gdb_server.c:1078 gdb_new_connection(): Target am654.cpu.a53.0 not examined yet, refuse gdb connection 1!
Error: 279 23313 server.c:94 add_connection(): attempted 'gdb' connection rejected
~~~


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