AM625: GPMC NAND boot Boot Failure Conditions

It is not really the same as AM335x, as there are multiple processors that get involved in the boot flow.  The AM62x will perform an integrity check of the boot image before attempting to boot (This is described in the Figure 5-3 in the TRM).  Linux boot flow is also described here:  https://dev.ti.com/tirex/explore/node?node=A__AXMgiFB9o6cNWaPJLfbHDw__AM62-ACADEMY__uiYMDcq__LATEST&search=am62x

REgards,

James

Hi James,

Thanks for your information.

JJD said:

The AM62x will perform an integrity check of the boot image before attempting to boot (This is described in the Figure 5-3 in the TRM).

I want to know detail of GPMC NAND boot operation using U-boot (I think boot operation is same as U-boot and SBL because it depends on ROM code).

In the manual, NAND written 2backup partition.

https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/09_02_01_10/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/Storage/NAND.html 

So maybe it operation as :

1. ROM code read "GPMC NAND boot" from HW dip switch.

2. Trying copy image on 0x0000(NAND.tiboot3) address in GPMC NAND to RAM.

3. Check of the boot image. if pass, boot. if not pass, next step

4. Trying copy image on 0x???? (NAND.tiboot3.backup) to RAM.

5. Check ,...

Is there anything document of this?

Best regards,

GR

Hi Hong,

Thanks for your information.

I understand.

Best regards,

GR