gdbserver, Failed to read memory at 0xfffffffe

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closed
manoj153
manoj153
Posted 3 months ago

gdbserver, Failed to read memory at 0xfffffffe #7

Any idea what is going wrong?

  • Development board : stm32h7a3zi-q

openocd.cfg :

source [find interface/stlink-dap.cfg]
transport select dapdirect_swd

set WORKAREASIZE 0x3000
set CHIPNAME STM32H7A3ZI
set BOARDNAME NUCLEO-H7A3ZI_Q

source [find target/stm32h7x.cfg]

# Use connect_assert_srst here to be able to program
# even when core is in sleep mode
reset_config srst_only srst_nogate connect_assert_srst

$_CHIPNAME.cpu0 configure -event gdb-attach {
        echo "Debugger attaching: halting execution"
        gdb_breakpoint_override hard
}

$_CHIPNAME.cpu0 configure -event gdb-detach {
        echo "Debugger detaching: resuming execution"
        resume
}

# Due to the use of connect_assert_srst, running gdb requires
# to reset halt just after openocd init.
rename init old_init
proc init {} {
        old_init
        reset halt
}

openocd runtime info :

Open On-Chip Debugger 0.11.0+dev-00242-g7036ed509-dirty (2021-09-20-14:06)
Licensed under GNU GPL v2
For bug reports, read
    http://openocd.org/doc/doxygen/bugs.html
init
Info : STLINK V3J8M3 (API v3) VID:PID 0483:374E
Info : stlink_dap_op_connect(connect)
Info : SWD DPIDR 0x6ba02477
Info : STM32H7A3ZI.cpu0: hardware has 8 breakpoints, 4 watchpoints
Info : STM32H7A3ZI.cpu0: external reset detected
Info : gdb port disabled
Info : starting gdb server for STM32H7A3ZI.cpu0 on 3333
Info : Listening on port 3333 for gdb connections
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x08001530 msp: 0x24000700
    TargetName         Type       Endian TapName            State       
--  ------------------ ---------- ------ ------------------ ------------
 0  STM32H7A3ZI.ap2    mem_ap     little STM32H7A3ZI.cpu    halted
 1* STM32H7A3ZI.cpu0   cortex_m   little STM32H7A3ZI.cpu    halted

target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x08001530 msp: 0x24000700
Info : Listening on port 6333 for tcl connections
Info : Listening on port 4444 for telnet connections
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x08001530 msp: 0x24000700
Info : accepting 'gdb' connection on tcp/3333
Debugger attaching: halting execution
force hard breakpoints
Info : Device: STM32H7Ax/7Bx
Info : flash size probed value 2048
Info : STM32H7 flash has dual banks
Info : Bank (0) size is 1024 kb, base address is 0x08000000
Info : New GDB Connection: 1, Target STM32H7A3ZI.cpu0, state: halted
Error: Failed to read memory at 0xfffffffe