EVMK2H beginning

embeddedHolic

Intellectual 405 points

Hi,

I am a newbie of EVMK2H.

The board version is 3.0

I have programmed the keystone-evm-ubifs.ubi to nand and linux boots OK.

and as says in quick start datasheet , there is web page to test arm/llinux functions.

Now i have some questions.

1. How to program DSP ?

If DSP is accessed via JTAG, linux may can not run.(I thinks share same jtags scan).

How can DSP be programmed whilest arm is running linux ?

Or other method ?

2. I want to send packet to DSP and DSP return.

Which example or manual could be help for me?

3. Finally i wanna setup as follows.

packets are traversing :

PC--->ARM(utilize muliple core, linux) --> DSPn ->DSPm -> ARM ---> PC

where is should start ?

EmbedHolic

over 11 years ago

0 Raja over 11 years ago

TI__Guru* 81335 points

Hi EmbedHolic,

[Q] How to program DSP ?

In Keystone II, ARM runs the application on top of SMP Linux kernel and DSP runs the BIOS application.

The ARM application shall be debugged through open source debuggers like gdb etc.

The DSP applications shall be debugged using below methods.

Multiple Processor Manager (MPM) Debugging:

Example: ..\ti\mcsdk_bios_3_00_03_15\examples\mpm\mpmsrv_keystone2_example

1. Create a /debug directory for the MPM trace information:

$ mkdir /debug

2. Mount debugfs in /debug:

$ mount -t debugfs none /debug

3. Load and run the image to DSP using mpmcl

$ mpmcl load dsp0 mpmsrv_keystone2_example.out

$ mpmcl run dsp0

4. View the trace buffer.

$ cat /debug/remoteproc/remoteproc0/trace0

Please refer this link for more detail:http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Developing_System_Mgmt#DSP_trace.2Fprint_messages_from_Linux

The MPM can monitors crash events from DSPs.The DSP image needs to be instrumented to indicate MPM that it is crashed.

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Developing_System_Mgmt#Crash_event_notification.2C_coredump_generation_and_processing

CCS Debugging:

Load DSP images from CCS and debug. Follow below steps in u-boot to enable this feature. This option is useful if you want to boot Linux on ARM and then use JTAG to manually load and run the DSPs. Otherwise you may see "held in reset" errors in CCS.

1. Set debug_options variable to 1

TCI6638 EVM # setenv debug_options 1

Refer below link for more information:http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Developing_System_Mgmt#Loading_DSP_images_from_CCS_.28without_using_MPM.29

Muli-core debugging using CCS: http://processors.wiki.ti.com/index.php/Multi-Core_Debug_with_CCSv5

[Q] I want to send packet to DSP and DSP return. Which example or manual could be help for me?

Please refer the PA example available in MCSDK for multi-core packet send and receive.

Example Path: ..\ti\pdk_keystone2_3_00_03_15\packages\ti\drv\pa\example\multicoreExample

[Q] Packets are traversing : PC--->ARM(utilize muliple core, linux) --> DSPn ->DSPm -> ARM ---> PC

Please start with IPC based Image Processing Demo available in MCSDK 3.x. I think that could help you.

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