ARM335X pushing u-boot

michael musset

Other Parts Discussed in Thread: UNIFLASH

Hi, I would like to know how to push the U-boot in the processor ARM335X ? How the company does it in mass production ? USB ? SERIAL ? JTAG ?

is there a program for that ? Or do I have to pass by the code composer studio ?

Micka,

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

Hi Micka,

It would depend on what kind of storage memory you have on your board. TI offers the Uniflash tool - see this link for details: http://processors.wiki.ti.com/index.php/Sitara_Linux_AM335x_Flash_Programming_Linux_Development

0 michael musset over 11 years ago in reply to Biser Gatchev-XID

Expert 1135 points

I've a SD ready to be boot, but my question is about the "bootstrap loader" . Does the ARM335X is ready from sractch to boot from the SD or does it need to be configured ? Does it come with a IPL ?

"In AM335x the ROM code serves as the bootstrap loader, sometimes referred to as the Initial Program Loader (IPL) or the Primary Program Loader (PPL)"

0 michael musset over 11 years ago in reply to michael musset

Expert 1135 points

Ok, I read other subject about it, normally there is a TI Boot ROM inside the AM335X .....

So if the SD is not detected, it should continue to print CCCC ?

0 Biser Gatchev-XID over 11 years ago in reply to michael musset

TI__Guru**** 393215 points

You are correct, there is ROM code in the processor. For correct initialization you will also need to tie the SYSBOOT[15:0] pins as appropriate. Complete overview of the booting process in given in section 26 of the AM335X Technical Reference Manual Rev. L.

0 michael musset over 11 years ago in reply to Biser Gatchev-XID

Expert 1135 points

Well, I finally managed what was wrong, the SDcard support was not correctly soldered . Now it's working. Thx.

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ARM335X pushing u-boot