arne wrote:
Hello,
I try to use openocd with a Luminary EK-LM3S9B90 Board.
This is the first time I try to use openocd and I hope I could post this
question to the List.
The EK-LM3S9B90 Board has an extra JTAG-Interface-Board with a FT2232D chip.
I set following in the cfg file,
ft2232_device_desc "Luminary Micro ICDI Board"
ft2232_vid_pid 0x0403 0xbcda
ft2232_layout evb_lm3s811
but I get a JTAG-communication failure with this settings.
What I have to do to add this Interface-board to Openocd?
First, is there already an Adapter with the Pinning below which I can use?
Is there a Documentation with the Pinnings and the differences of the supported
JTAG-Interfaces?
I looked a little bit around in the sources, tried to read some documentation,
but not very successful.
Do I have to add the Interface in the C-Sources, if yes what files I have to
modify?
I found the ft2232_layout_t array in the ft2322.c, where different initialisation and reset
functions are defined.
The Pining of the Ft2232 is the following if I understood everything right:
(TCK -> ADBUS0)
(TDI -> ADBUS1 (Output from JTAG-Board, TDI on Controller Side))
(TDO -> ADBUS2 (Input for JTAG-Board, TDO on Controller Side))
(TMS -> ADBUS3)
(SRST -> ADBUS5)
There is an enable signal for all JTAG Drivers connected to ADBUS6.
There is a Signal called DBGMOD (ADBUS7) which enables or disables the TMS Driver and makes some
further switching with the TDO/TMS Signals. Seems, that it is for a kind of Single-wire
Communication over TMS, is this knownin other JTAG Interfaces?
The second Interface (BDBUS) of the ft2322 is used as UART and is connected to
controller too,
I think for build-in Bootloader support of the LM3sB90.
By the way, I tried to compile openocd trunk with static linking for the ftd2xx driver, I get no
errors during configuration and compiling, but the linker cant't find the FT_xxxxx Functions from
the ../static-lib/libftd2xx.a.0.4.16. pathes seems to be correct.
with shared, I can start openocd. any Idea ?? (System is Ubuntu, with gcc4.2.4)
I can start openocd only with sudo, as normal user I get a segfault.
Best regards
Arne
Hi
I use the EK-LM3S9B92 board with the same debug board (Luminary Micro
ICDI Board). I created this ft2232.c.patch to get it work.
I also attached my configuration files.
Best regards
Marcel
Index: src/jtag/ft2232.c
===================================================================
--- src/jtag/ft2232.c (revision 2413)
+++ src/jtag/ft2232.c (working copy)
@@ -156,6 +156,7 @@
{ "oocdlink", jtagkey_init, jtagkey_reset, NULL },
{ "signalyzer", usbjtag_init, usbjtag_reset, NULL },
{ "evb_lm3s811", usbjtag_init, usbjtag_reset, NULL },
+ { "micro_icdi", usbjtag_init, usbjtag_reset, NULL },
{ "olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink },
{ "flyswatter", flyswatter_init, flyswatter_reset, flyswatter_jtag_blink },
{ "turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink },
@@ -2163,6 +2164,15 @@
low_output = 0x88;
low_direction = 0x8b;
}
+ else if (strcmp(ft2232_layout, "micro_icdi") == 0)
+ {
+ nTRST = 0x0;
+ nTRSTnOE = 0x00;
+ nSRST = 0x20;
+ nSRSTnOE = 0x20;
+ low_output = 0x88;
+ low_direction = 0xcb;
+ }
else
{
LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
# script for luminary lm3s9b92
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME lm3s9b92
}
if { [info exists ENDIAN] } {
set _ENDIAN $ENDIAN
} else {
# this defaults to a little endian
set _ENDIAN little
}
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
# force an error till we get a good number
set _CPUTAPID 0x4ba00477
}
# jtag speed
jtag_khz 500
jtag_nsrst_delay 100
jtag_ntrst_delay 100
#LM3S6918 Evaluation Board has only srst
reset_config srst_only
#jtag scan chain
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 1 -irmask 0xf -expected-id
$_CPUTAPID
# the luminary variant causes a software reset rather than asserting SRST
# this stops the debug registers from being cleared
# this will be fixed in later revisions of silicon
set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position
$_TARGETNAME -variant lm3s
# 4k working area at base of ram
$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x20000000
-work-area-size 0x4000 -work-area-backup 0
#flash configuration
flash bank stellaris 0 0 0 0 0
gdb_memory_map enable
# ftdi interface using libftdi driver
interface ft2232
ft2232_device_desc "Luminary Micro ICDI Board"
ft2232_layout micro_icdi
ft2232_vid_pid 0x0403 0xbcda
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