OMAP L138 linux

Hi Alexey,

Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages. Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics.

Please specify the type of OMAPL138 board you are using. Is it a OMAPL138 LCDK board or OMAPL138 EVM?

For OMAPL138 LCDK, there are starterware examples readily available on both ARM and DSP side of OMAPL138. I suggest you to start with something which already works very well.

Alexey says said:

How can I develop a program for Linux, that writes this *.out-file into memory to run it in DSP core after reset.

Using CCS, you can develop a DSP side application and generate *.out and convert it into *.bin using AIS gen tool or out2rprc and then flash it into target using serial flasher utility.

Please refer to the below link for Booting and flashing.

http://processors.wiki.ti.com/index.php/OMAPL138_StarterWare_Booting_And_Flashing#Flashing_the_Application

You may also find the below links useful

http://processors.wiki.ti.com/index.php/BIOS_C6SDK_2.0_User_Guide

http://processors.wiki.ti.com/index.php/StarterWare_01.10.01.01_User_Guide

The Serial Boot and Flash Loading Utility for OMAP-L138/C6748 is detailed http://processors.wiki.ti.com/index.php/Serial_Boot_and_Flash_Loading_Utility_for_OMAP-L138

Regards,

Shankari

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Thank you

I am using  OMAPL138 EVM board.
I read the documents, but there is no answer to my question.
I want out ARM core to update the program DSP core.
I want my program of linux in the ARM core to write  DSP's executable file into memory.
In the desired range of addresses.
how to do it?

Hi Alexey,

Thanks for the post.

You shall enable Memory Technology Device(MTD) in kernel configuration in Linux. That enables the access to the read/write/erase to the SPI / NAND flashes connected to the EVM from Linux. 

http://processors.wiki.ti.com/index.php/UBIFS_Support#Configuration

You shall download the MTD & NAND utilities from open source, cross compile and install it in the target file system.

That will enable some commands to read/write/erase flash from user interface.

(Or)

Write a user space application to read/write/erase the flash.

Thank you.

Can I boot DSP core from SPI flash and ARM core from NAND flash? Or I can boot both cores from NAND(SPI) flash

Can linux application access a desired addresses range of SPI flash  from user space?

Hi Alexey,

Thanks for the post.

Alexey: said:

Can I boot DSP core from SPI flash and ARM core from NAND flash? Or I can boot both cores from NAND(SPI) flash

The OMAP-L138 is the arm boot device. On Power On Reset arm gets booted and loads the DSP to start.

If the arm core is booted from SPI/NAND flash(ARM UBL) then you shall customize/configure the DSP to boot (DSP UBL).

In most of the designs, both cores will boot from either SPI/NAND flash.

Alexey: said:

Can linux application access a desired addresses range of SPI flash  from user space?

Yes. It's possible to access the desired address range of SPI flash from user space.

Provided the kernel should have the support and partitions (mtd partitions) enabled to access the SPI flash.

Thank you