Linux: SRAM for passing information from u-boot to Linux

ranchu

Guru 20755 points

Tool/software: Linux

Hello,

Is it generally allowed to use SRAM in u-boot and Linux, or is its memory space is used by u-boot, Linux ?

I am looking for a way to pass information from u-boot to Linux, and SRAM seems like a good way, though I am not fully sure if it is already used or not.

Thank you,

Ran

over 8 years ago

0 Yordan Kovachev over 8 years ago

TI__Guru**** 161600 points

Hi Ran,

The u-boot runs from SRAM, after that linux kernel is loaded in DDR & operates with the DDR.

Best Regards,
Yordan

0 Yordan Kovachev over 8 years ago in reply to Yordan Kovachev

TI__Guru**** 161600 points

To be more precise MLO/spl run from SRAM, it configures the DDR and after that u-boot can work with DDR.

Best Regards,
Yordan

0 ranchu over 8 years ago in reply to Yordan Kovachev

Guru 20755 points

Hello,

Right,

So it seems that after MLO finish and u-boot/Linux take charge, the SRAM can be used for other purpose.

Thank you,

Ran

Processors

Processors forum

Linux: SRAM for passing information from u-boot to Linux