AM6412: EMMC boot fail after SD burn image

Yang Jkun

Prodigy 70 points

Part Number: AM6412

EMMC boot fail after SD burn image.

steps:
1.switch to SD boot.

2.burn image to EMMC until succ.
3.Power off and power on the board.(now the board is still SD boot mode).

4.power off board ,

5.switch to EMMC boot mode .
6.Power on the board,The board can't boot.

others:
if we execute only step 1、2、5,6 after burn image,The board can boot succ from EMMC.

It means,after burn same image to EMMC ,if we boot from SD once or more times,then switch to EMMC ,The board can't boot.
It means,after burn same image to EMMC ,if we switch to EMMC immediately ,The board can boot.

Is there a issue at boot?

over 1 year ago

0 Prashant Shivhare over 1 year ago

TI__Guru 71551 points

Hi Yang,

Yang Jkun said:
if we boot from SD once or more times,then switch to EMMC ,The board can't boot.

In this case, can you check if the images are there at their respective offsets in the eMMC?

Regards,

Prashant

0 Yang Jkun over 1 year ago in reply to Prashant Shivhare

Prodigy 70 points

Hi ,
The images are at their respective offsets in the eMMC.
I checked agagin.
The issue root cause is eMMC not init when SD boot.

The uboot only init curr boot device,

so if boot via SD ,the eMMC not init,

and The CPU May be remember some flags,so,if we change switch to eMMC,The CPU still not detect eMMC.
I add eMMC init when boot via SD,and fixed this issue

Processors

Processors forum

AM6412: EMMC boot fail after SD burn image