How to select Flash boot on K2X EVM?

Hi David,

David said:

How should I modify the U-boot bootcmd script to select Flash boot?

Using setenv and printenv, you can change and view the command scripts on environmental variables. For SPI booting, you can try like below:-

K2HK EVM # setenv bootcmd 'run ${burn_uboot}'

K2HK EVM # saveenv

Use printenv to see the list of varaibles and it's expansion.

 K2HK EVM #printenv burn_uboot

Regards,

Shankari

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Hi

There seems to be something wrong with E2E at the moment. I am getting notification emails at odd times and, for this thread, I am getting notifications about answers that I can't see in the browser, eg for Shankari's reply.

David

Hi Shankari

After I wrote my last post, your reply appeared. E2E seems to be behaving oddly at the moment.

I understand how to use setenv. What I want to understand is the meaning of the predefined U-boot scripts such as init_ramfs.

BR

David

Hi David,

In your first post you asked for a SPI boot. That's why I have given setting the env for burning uboot into SPI flash.

K2HK EVM # setenv bootcmd 'run ${burn_uboot}'

When you expand the "burn_uboot", you will get like below.  

2HK EVM # printenv burn_uboot
burn_uboot=sf probe; sf erase 0 0x100000; sf write ${addr_uboot} 0 ${filesize}

For example, when we want to know about the pre-defined U-boot Scripts, we have to expand and see like below to understand the meaning of them ( init_ramfs, args_all e.t.c).

K2HK EVM # printenv init_ramfs
init_ramfs=run set_fs_none args_all args_ramfs get_fs_ramfs
K2HK EVM # printenv set_fs_none
set_fs_none=setenv addr_uinitrd -
K2HK EVM # printenv args_all
args_all=setenv bootargs console=ttyS0,115200n8 rootwait=1

( Note: Whenever you get a reply to your post, you will immediately get email notification to yourmailbox irrespective of time. By the time, you looked into the post, actually I had deleted and reposted my reply. Hope this clarifies that the E2E doesnot have any problem!.)

Regards,

Shankari.

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