AnsweredAssumed Answered

OpenOCD Problem i.MX6

Question asked by matthiasniedermaier on Mar 18, 2013
Latest reply on Dec 8, 2015 by jesse stone
Branched to a new discussion

Hello,

i have a "SABRE Board for Smart Devices Based on the i.MX 6 Series". And I tried to get OpenOCD to work with it.


This is my OpenOCD configuration file for the i.MX6.

 

# Freescale i.MX6 series single/dual/quad core processor
if { [info exists CHIPNAME] } {
  set _CHIPNAME $CHIPNAME
} else {
  set _CHIPNAME imx6
}

# CoreSight Debug Access Port
if { [info exists DAP_TAPID] } {
  set _DAP_TAPID $DAP_TAPID
} else {
  set _DAP_TAPID 0x4ba00477
}

jtag newtap $_CHIPNAME dap -irlen 4 -ircapture 0x01 -irmask 0x0f \
  -expected-id $_DAP_TAPID

# SDMA / no IDCODE
jtag newtap $_CHIPNAME sdma -irlen 4 -ircapture 0x00 -irmask 0x0f

# System JTAG Controller
if { [info exists SJC_TAPID] } {
  set _SJC_TAPID SJC_TAPID
} else {
  set _SJC_TAPID 0x0191c01d
}
set _SJC_TAPID2 0x2191c01d

jtag newtap $_CHIPNAME sjc -irlen 5 -ircapture 0x01 -irmask 0x1f \
  -expected-id $_SJC_TAPID -expected-id $_SJC_TAPID2

# GDB target: Cortex-A9, using DAP, configuring only one core
# Base addresses of cores:
# core 0 - 0x82150000
# core 1 - 0x82152000
# core 2 - 0x82154000
# core 3 - 0x82156000
set _TARGETNAME $_CHIPNAME.cpu.0
target create $_TARGETNAME cortex_a8 -chain-position $_CHIPNAME.dap \
  -coreid 0 -dbgbase 0x82150000

# some TCK cycles are required to activate the DEBUG power domain
jtag configure $_CHIPNAME.sjc -event post-reset "runtest 100"

proc imx6_dbginit {target} {
  # General Cortex A8/A9 debug initialisation
  cortex_a8 dbginit
}

# Slow speed to be sure it will work
jtag_rclk 1000
$_TARGETNAME configure -event reset-start { jtag_rclk 1000 }

$_TARGETNAME configure -event reset-assert-post "imx6_dbginit $_TARGETNAME"
$_TARGETNAME configure -event gdb-attach { halt }

 

 

I am using the openocd-usb-hs adapter from embedded-projects. This is the output after starting OpenOCD.

 

Open On-Chip Debugger 0.6.1 (2013-03-18-13:15)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.sourceforge.net/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
Warn : imx6.sdma: nonstandard IR value
RCLK - adaptive
adapter speed: 3000 kHz
Info : max TCK change to: 30000 kHz
Info : clock speed 3000 kHz
Polling target failed, GDB will be halted. Polling again in 100ms
Polling target failed, GDB will be halted. Polling again in 300ms
Error: couldn't read enough bytes from FT2232 device (0 < 81)
Error: couldn't read from FT2232
in procedure 'runtest'
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: couldn't read enough bytes from FT2232 device (0 < 3)
Error: couldn't read from FT2232
Warn : Bypassing JTAG setup events due to errors
Error: couldn't read enough bytes from FT2232 device (0 < 12)
Error: couldn't read from FT2232
Polling target failed, GDB will be halted. Polling again in 700ms
Polling target failed, GDB will be halted. Polling again in 1500ms

 

 

I hope it is enough information.. If not please say what you need..

Do you have any idea what's the problem?

 

Thank you! I hope you can help me!

 

MaTT

 

Outcomes