AM625: How to boot Linux without U-Boot

Thinh Nguyen

Intellectual 825 points

Part Number: AM625

Hello TI's expert,

I want to boot Linux quickly without U-Boot on my system.

I mean that I need to modify ARM64 spl for that.

Do you have reference document or sample source for that.

Thank you

Brian

over 3 years ago

0 Bin Liu over 3 years ago

TI__Guru**** 179141 points

Hi Brian,

The Processor SDK Linux doesn't support booting Linux directly from ARM64 SPL, and there is no documentation describing how to modify ARM64 SPL to achieve this.

Do you mind to explain your boot time requirement? In the entire Linux boot process, u-boot takes much less time than Linux kernel, have you considered to optimize kernel boot time to compensate the time taken by u-boot?

0 Andreas Dannenberg over 3 years ago

TI__Guru 70602 points

Thinh Nguyen said:
I want to boot Linux quickly without U-Boot on my system.

We now have an E2E FAQ on this very topic, adding a reference here for better findability:

[FAQ] AM625: How to boot from R5 U-Boot SPL directly into the Linux Kernel, skipping A53 SPL and A53 U-Boot (Falcon Mode)
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1205638/faq-am625-how-to-boot-from-r5-u-boot-spl-directly-into-the-linux-kernel-skipping-a53-spl-and-a53-u-boot-falcon-mode

Regards, Andreas

Processors

Processors forum

AM625: How to boot Linux without U-Boot