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Open source ARM Debugger
By cmeyer
#154541
Has anyone tried to flash a TI LM4F device (specifically I am using an EK-LM4F232 board) using OpenOCD and the TI ICDI interface? When I try it I get the following:
Code: Select all
Open On-Chip Debugger 0.7.0-dev-00145-gd631b2e (2013-01-23-09:38)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.sourceforge.net/doc/doxygen/bugs.html
adapter speed: 1000 kHz
Info : clock speed 1000 kHz
Info : ICDI Firmware version: 8790
Info : lmf423x.cpu: hardware has 6 breakpoints, 4 watchpoints
target state: halted
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x00000642 msp: 0x20001418
auto erase enabled
Error: timed out while waiting for target halted
target state: halted
target halted due to debug-request, current mode: Thread
xPSR: 0x61000000 pc: 0x20000016 msp: 0x20001418
Error: error waiting for target flash write algorithm
...and I end up needing the ^C to get out. Below is my OpenOCD configuration/command file:
Code: Select all
source [find interface/ti-icdi.cfg]
set WORKAREASIZE 0x8000
set CHIPNAME lmf423x
source [find target/stellaris_icdi.cfg]
gdb_port 3332
init
reset halt
flash write_image erase firmware.bin 0
reset
exit
User avatar
By ntfreak
#154544
Hello again,

Can you post a full debug log?

For info that board has a proper cfg, eg.
Code: Select all
source [find board/ek-lm4f232.cfg]
Cheers
Spen
By cmeyer
#154545
Thanks, I have updated my OpenOCD script as follow (flash.cfg):
Code: Select all
source [find board/ek-lm4f232.cfg]
gdb_port 3332
init
reset halt
flash write_image erase D:/Projects/Stryker/MoonRacer/SW/AuxBus/GIT/template/factory.bin 0
reset
exit
I have attached the debug log output from running this script with the following command:
Code: Select all
$ openocd.exe --debug --log_output flash.log -f flash.cfg 
You do not have the required permissions to view the files attached to this post.
User avatar
By ntfreak
#154553
For some reason the flash loader does not appear to be working as expected - i cannot reproduce here though.
The loader is common among all stellaris targets. After failing it is then dropping through to the much slower memory writes.

Do you get the same behaviour if you use the elf to program ?
If you do can you send me a copy of the failing elf or binary.

Sometimes it is easier to split the erase, as it can make debugging issues easier.
Code: Select all
flash erase_sector lm4f23x.flash 0 last
flash write_image firmware.bin
For info to quit OpenOCD in your script use 'shutdown' not 'exit'.

Cheers
Spen
By cmeyer
#154562
Thanks for the information Spen. I have updated my OpenOCD command/configuration files to the following...

erase.cfg:
Code: Select all
source [find board/ek-lm4f232.cfg]
init
reset halt
flash erase_sector lm4f23x.flash 0 last
shutdown
flash.cfg:
Code: Select all
source [find board/ek-lm4f232.cfg]
init
reset halt
flash write_image FIRMWARE.bin 0 bin
shutdown
I can't provide the binary that I am using, but what I can tell you is that it DOES WORK if the binary is less than 128k (or, at least I tested up to 127k). At 128k flashing starts to fail. The binary I WAS working with is 152k in size. This device has 256k flash and when I run 'flash info 0' I do get 256 flash pages, each 1k in size.
By cmeyer
#154594
For actual testing, to determine what size files I could flash, I simply created binary files that where completely zeroed out but of the specified size. I used a simple little Python function:
Code: Select all
def gen_file(sz):
    with open('zero-{0}k.bin'.format(sz), 'w') as f:
        f.write('\x00' * 1024 * sz)
With the above function, simply execute gen_file(1) to create a file called 'zero-1k.bin' that is 1kbytes in size that is completely zeroed out.
User avatar
By ntfreak
#154595
I can reproduce here, very strange.

My original test binary was 256k and that works fine however if I reduce the count by 4 bytes it fails :)

I can only think the issue is related to the icdi, if I use another adapter with the same target it works OK.

Need to try a few other things tomorrow before I blame the icdi.

Cheers
Spen
By cmeyer
#154604
I just tried the 128k binary which failed using OpenOCD with the LM Flash utility from TI and that worked fine.
User avatar
By ntfreak
#154627
I pretty much know what is causing the problem, i have emailed my contact at TI to see if he can clarify it.

Will keep you posted.

Cheers
Spen
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