SparkFun Forums

[elvis61]

hi together,

if i try to debug my sheevaplug i get following issues

minicom
#########

U-Boot 2013.10 (Dec 29 2013 - 12:15:18)
Marvell-Sheevaplug

SoC: Kirkwood 88F6281_A1
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: 512 MiB
In: serial
Out: serial
Err: serial
Net: egiga0 [PRIME]
88E1116 Initialized on egiga0
Hit any key to stop autoboot: 0
Marvell>>

U-Boot 2013.10 (Dec 29 2013 - 12:15:18)
Marvell-Sheevaplug

SoC: Kirkwood 88F6281_A1
DRAM: 512 MiB
WARNING: Caches not enabled
NAND: 512 MiB
In: serial
Out: serial
Err: serial
Net: egiga0 [PRIME]
88E1116 Initialized on egiga0
Hit any key to stop autoboot: 0
Marvell>>


openocd
#######
root@debian:/home/tux/aaa/arm/openocd/openocd# openocd
Open On-Chip Debugger 0.5.0 (2011-08-11-06:56)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.berlios.de/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
2000 kHz
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain
adapter_nsrst_delay: 200
jtag_ntrst_delay: 200
dcc downloads are enabled
sheevaplug_load_uboot
Info : clock speed 2000 kHz
Info : JTAG tap: feroceon.cpu tap/device found: 0x20a023d3 (mfg: 0x1e9, part: 0x0a02, ver: 0x2)
Info : Embedded ICE version 0
Info : feroceon.cpu: hardware has 1 breakpoint/watchpoint unit
Info : accepting 'telnet' connection from 4444
Info : Halt timed out, wake up GDB.
Error: timed out while waiting for target halted
Runtime Error: openocd.cfg:34:
in procedure 'sheevaplug_init'
in procedure 'wait_halt' called at file "openocd.cfg", line 34
Warn : target not halted
in procedure 'load_image'
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
5825772 bytes written at address 0xc0008000
downloaded 5825772 bytes in 58.729290s (96.872 KiB/s)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Error: Couldn't calculate PC of next instruction, current opcode was 0x00000000
in procedure 'step'
Info : accepting 'gdb' connection from 3333
Warn : acknowledgment received, but no packet pending
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Warn : memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)

netcat
#######
root@debian:/home/tux/aaa/arm/openocd/openocd# netcat localhost 4444
????????Open On-Chip Debugger
> sheevaplug_init
sheevaplug_init
Halt timed out, wake up GDB.
timed out while waiting for target halted
Runtime Error: openocd.cfg:34:
in procedure 'sheevaplug_init'
in procedure 'wait_halt' called at file "openocd.cfg", line 34
> load_image /home/tux/aaa/arm/she/linux-2.6.39/vmlinux
load_image /home/tux/aaa/arm/she/linux-2.6.39/vmlinux
target not halted
in procedure 'load_image'
> sheevaplug_init
sheevaplug_init
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
> load_image /home/tux/aaa/arm/she/linux-2.6.39/vmlinux
load_image /home/tux/aaa/arm/she/linux-2.6.39/vmlinux
5825772 bytes written at address 0xc0008000
downloaded 5825772 bytes in 58.729290s (96.872 KiB/s)
> step 0xc0008000
step 0xc0008000
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Couldn't calculate PC of next instruction, current opcode was 0x00000000
in procedure 'step'
accepting 'gdb' connection from 3333
acknowledgment received, but no packet pending
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0007ffc, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
>

gdb
#####
root@debian:/home/tux/aaa/arm/openocd/openocd# . ../../../arm-env.sh
root@debian:/home/tux/aaa/arm/openocd/openocd# arm-poky-linux-gnueabi-gdb /home/tux/aaa/arm/she/linux-2.6.39/vmlinux
GNU gdb (GDB) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-linux --target=arm-poky-linux-gnueabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/tux/aaa/arm/she/linux-2.6.39/vmlinux...done.
(gdb) target remote localhost:3333
Remote debugging using localhost:3333
stext () at arch/arm/kernel/head.S:76
76 setmode PSR_F_BIT | PSR_I_BIT | SVC_MODE, r9 @ ensure svc mode
(gdb) break start_kernel
Breakpoint 1 at 0xc00085f8: file init/main.c, line 457.
(gdb) c
Continuing.
Warning:
Cannot insert breakpoint 1.
Error accessing memory address 0xc00085f8: Unknown error 4294967295.

(gdb) hb start_kernel
Note: breakpoint 1 also set at pc 0xc00085f8.
Hardware assisted breakpoint 2 at 0xc00085f8: file init/main.c, line 457.
(gdb) c
Continuing.
Warning:
Cannot insert breakpoint 1.
Error accessing memory address 0xc00085f8: Unknown error 4294967295.

(gdb)


error-issue begins with
..
> step 0xc0008000
step 0xc0008000
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Couldn't calculate PC of next instruction, current opcode was 0x00000000
...

and continues with

....
(gdb) break start_kernel
Breakpoint 1 at 0xc00085f8: file init/main.c, line 457.
(gdb) c
Continuing.
Warning:
Cannot insert breakpoint 1.
Error accessing memory address 0xc00085f8: Unknown error 4294967295.

(gdb) hb start_kernel
Note: breakpoint 1 also set at pc 0xc00085f8.
Hardware assisted breakpoint 2 at 0xc00085f8: file init/main.c, line 457.
(gdb) c
Continuing.
Warning:
Cannot insert breakpoint 1.
Error accessing memory address 0xc00085f8: Unknown error 4294967295.
....

Has somebody some idea ?

thanks for ideas

[elvis61]

the same procedure with u-boot works very well

root@debian:/home/tux/aaa/arm/openocd/openocd# openocd
Open On-Chip Debugger 0.5.0 (2011-08-11-06:56)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.berlios.de/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
2000 kHz
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain
adapter_nsrst_delay: 200
jtag_ntrst_delay: 200
dcc downloads are enabled
Error: arguments must be: <target_id> <NAND_address>
Error: 'orion' driver rejected nand flash
sheevaplug_load_uboot
Info : clock speed 2000 kHz
Info : JTAG tap: feroceon.cpu tap/device found: 0x20a023d3 (mfg: 0x1e9, part: 0x0a02, ver: 0x2)
Info : Embedded ICE version 0
Info : feroceon.cpu: hardware has 1 breakpoint/watchpoint unit
Info : accepting 'telnet' connection from 4444
invalid command name "shevaplug_init"
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
Info : JTAG tap: feroceon.cpu tap/device found: 0x20a023d3 (mfg: 0x1e9, part: 0x0a02, ver: 0x2)
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
Info : accepting 'gdb' connection from 3333
Warn : acknowledgment received, but no packet pending

root@debian:/home/tux/aaa/arm/openocd/openocd# telnet localhost 4444
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> shevaplug_init
invalid command name "shevaplug_init"
> sheevaplug_init
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
> reset
JTAG tap: feroceon.cpu tap/device found: 0x20a023d3 (mfg: 0x1e9, part: 0x0a02, ver: 0x2)
> sheevaplug_init
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x000000d3 pc: 0xffff0000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
accepting 'gdb' connection from 3333
acknowledgment received, but no packet pending
>

root@debian:/home/tux/aaa/arm/openocd/openocd# . ../../../arm-env.sh
root@debian:/home/tux/aaa/arm/openocd/openocd# arm-poky-linux-gnueabi-gdb /home/tux/aaa/arm/she/u-boot-2013.10/u-boot
GNU gdb (GDB) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-linux --target=arm-poky-linux-gnueabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/tux/aaa/arm/she/u-boot-2013.10/u-boot...done.
(gdb)
(gdb) target remote localhost:3333
Remote debugging using localhost:3333
0xffff0000 in ?? ()
(gdb) load
Loading section .text, size 0x42d8c lma 0x600000
Loading section .rodata, size 0xf059 lma 0x642d90
Loading section .hash, size 0x2c lma 0x651dec
Loading section .ARM.extab, size 0xc lma 0x651e18
Loading section .data, size 0x1f36 lma 0x651e24
Loading section .got.plt, size 0xc lma 0x653d5c
Loading section .u_boot_list, size 0x6c0 lma 0x653d68
Loading section .rel.dyn, size 0x7aa0 lma 0x654428
Start address 0x600000, load size 376511
Transfer rate: 39 KB/sec, 13446 bytes/write.
(gdb) break kw_winctrl_calcsize
Breakpoint 1 at 0x600344: file cpu.c, line 68.
(gdb) c
Continuing.

Program received signal SIGINT, Interrupt.
kw_winctrl_calcsize (sizeval=sizeval@entry=268435456) at cpu.c:68
68 unsigned int j = 0;
(gdb)


Now i ask me what is the difference ??

[elvis61]

No idea for this behavior

memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
memory read caused data abort (address: 0xc0008000, size: 0x4, count: 0x1)
Couldn't calculate PC of next instruction, current opcode was 0x00000000

No solution