[Openocd-development] PXA270: can read/write the core registers, but can't read memory and registers of the devices on chip

[dswei <ds...@si...>]

Hi, all.
  I have checkout the latest openocd today, and use it on PXA270.
1. There is u-boot on the board , when I connect it with openocd and reset it,
    it is halted with pc equal to 0, and in User mode.
2. I can use the command 'reg cpsr 0xd3' to force it enter Supervisor
3. Both in user mode and Supervisor mode, I can use the 'reg' command to read/write the core registers.
4. But if I use 'mdw' to display the memeoty(address is 0 or 0x5c000000, or 0x48000000) , it is failed.
  Why I can read/write the core registers, but can't read/write the memory and registers of the devices?

  The log is below:
target halted in ARM state due to target-not-halted, current mode: User
cpsr: 0x00000000 pc: 0x00000000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
> reg cpsr 0xd3
cpsr (/32): 0x000000d3
> poll
target state: halted
target halted in ARM state due to target-not-halted, current mode: Supervisor
cpsr: 0x000000d3 pc: 0x00000000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
> mdw 0x48000000
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
Runtime error, file "command.c", line 448:

>
>
> poll
target state: halted
target halted in ARM state due to target-not-halted, current mode: Supervisor
cpsr: 0x000000d3 pc: 0x00000000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
> reset
JTAG tap: pxa270.cpu tap/device found: 0x79265013 (Manufacturer: 0x009, Part: 0x
9265, Version: 0x7)
JTAG Tap/device matched
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x07
in_handler reported a failed check
JTAG error while writing DCSR
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x07
in_handler reported a failed check
JTAG error while writing DCSR
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
BUG: keep_alive() was not invoked in the 1000ms timelimit. GDB alive packet not
sent! (1453)
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x07
in_handler reported a failed check
JTAG error while writing DCSR
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x07
in_handler reported a failed check
JTAG error while writing DCSR
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x07
in_handler reported a failed check
JTAG error while reading DCSR
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while writing RX
BUG: keep_alive() was not invoked in the 1000ms timelimit. GDB alive packet not
sent! (2313)
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x01 check_mask: 0x7f
in_handler reported a failed check
TAP pxa270.cpu:
value captured during scan didn't pass the requested check:
captured: 0x00 check_value: 0x02 check_mask: 0x06
in_handler reported a failed check
JTAG error while reading TX
error while polling TX register, reset CPU
target state: halted
target halted in ARM state due to target-not-halted, current mode: Supervisor
cpsr: 0x000000d3 pc: 0x00000000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
>
>
> poll
target state: halted
target halted in ARM state due to target-not-halted, current mode: Supervisor
cpsr: 0x000000d3 pc: 0x00000000
MMU: disabled, D-Cache: disabled, I-Cache: disabled
>
>
>
>
> reg
(0) r0 (/32): 0x00000000 (dirty: 0, valid: 0)
(1) r1 (/32): 0x00000000 (dirty: 0, valid: 0)
(2) r2 (/32): 0x00000000 (dirty: 0, valid: 0)
(3) r3 (/32): 0x00000000 (dirty: 0, valid: 0)
(4) r4 (/32): 0x00000000 (dirty: 0, valid: 0)
(5) r5 (/32): 0x00000000 (dirty: 0, valid: 0)
(6) r6 (/32): 0x00000000 (dirty: 0, valid: 0)
(7) r7 (/32): 0x00000000 (dirty: 0, valid: 0)
(8) r8 (/32): 0x00000000 (dirty: 0, valid: 0)
(9) r9 (/32): 0x00000000 (dirty: 0, valid: 0)
(10) r10 (/32): 0x00000000 (dirty: 0, valid: 0)
(11) r11 (/32): 0x00000000 (dirty: 0, valid: 0)
(12) r12 (/32): 0x00000000 (dirty: 0, valid: 0)
(13) r13_usr (/32): 0x00000000 (dirty: 0, valid: 0)
(14) lr_usr (/32): 0x00000000 (dirty: 0, valid: 0)
(15) pc (/32): 0x00000000 (dirty: 0, valid: 0)
(16) r8_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(17) r9_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(18) r10_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(19) r11_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(20) r12_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(21) r13_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(22) lr_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(23) r13_irq (/32): 0x00000000 (dirty: 0, valid: 0)
(24) lr_irq (/32): 0x00000000 (dirty: 0, valid: 0)
(25) r13_svc (/32): 0x00000000 (dirty: 0, valid: 0)
(26) lr_svc (/32): 0x00000000 (dirty: 0, valid: 0)
(27) r13_abt (/32): 0x00000000 (dirty: 0, valid: 0)
(28) lr_abt (/32): 0x00000000 (dirty: 0, valid: 0)
(29) r13_und (/32): 0x00000000 (dirty: 0, valid: 0)
(30) lr_und (/32): 0x00000000 (dirty: 0, valid: 0)
(31) cpsr (/32): 0x000000d3 (dirty: 0, valid: 0)
(32) spsr_fiq (/32): 0x00000000 (dirty: 0, valid: 0)
(33) spsr_irq (/32): 0x00000000 (dirty: 0, valid: 0)
(34) spsr_svc (/32): 0x00000000 (dirty: 0, valid: 0)
(35) spsr_abt (/32): 0x00000000 (dirty: 0, valid: 0)
(36) spsr_und (/32): 0x00000000 (dirty: 0, valid: 0)
(37) XSCALE_MAINID (/32): 0x00000000 (dirty: 0, valid: 0)
(38) XSCALE_CACHETYPE (/32): 0x00000000 (dirty: 0, valid: 0)
(39) XSCALE_CTRL (/32): 0x00000000 (dirty: 0, valid: 0)
(40) XSCALE_AUXCTRL (/32): 0x00000000 (dirty: 0, valid: 0)
(41) XSCALE_TTB (/32): 0x00000000 (dirty: 0, valid: 0)
(42) XSCALE_DAC (/32): 0x00000000 (dirty: 0, valid: 0)
(43) XSCALE_FSR (/32): 0x00000000 (dirty: 0, valid: 0)
(44) XSCALE_FAR (/32): 0x00000000 (dirty: 0, valid: 0)
(45) XSCALE_PID (/32): 0x00000000 (dirty: 0, valid: 0)
(46) XSCALE_CPACCESS (/32): 0x00000000 (dirty: 0, valid: 0)
(47) XSCALE_IBCR0 (/32): 0x00000000 (dirty: 0, valid: 0)
(48) XSCALE_IBCR1 (/32): 0x00000000 (dirty: 0, valid: 0)
(49) XSCALE_DBR0 (/32): 0x00000000 (dirty: 0, valid: 0)
(50) XSCALE_DBR1 (/32): 0x00000000 (dirty: 0, valid: 0)
(51) XSCALE_DBCON (/32): 0x00000000 (dirty: 0, valid: 0)
(52) XSCALE_TBREG (/32): 0x00000000 (dirty: 0, valid: 0)
(53) XSCALE_CHKPT0 (/32): 0x00000000 (dirty: 0, valid: 0)
(54) XSCALE_CHKPT1 (/32): 0x00000000 (dirty: 0, valid: 0)
(55) XSCALE_DCSR (/32): 0x00000000 (dirty: 0, valid: 0)
(56) XSCALE_TX (/32): 0x00000000 (dirty: 0, valid: 0)
(57) XSCALE_RX (/32): 0x00000000 (dirty: 0, valid: 0)
(58) XSCALE_TXRXCTRL (/32): 0x00000000 (dirty: 0, valid: 0)
>
>
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　　　　　　　　dswei
　　　　　　　　ds...@si...
　　　　　　　　　　2008-12-04