AM623: Custom board - AM623 - NAND booting not working

Hi,

The expert is currently out of office. Please expect delay of 2-3 working days to get a response.

Regards,
Aparna

Hi RJ,

RJ DJ said:

but trying to boot from primary boot mode its not working, primary boot configuration GPMC-NAND and secondary is USB .

RJ DJ said:

But we are facing USB-DFU is not detecting issue while trying initial boot (sudo dfu-util -l shows no device available)

Please clarify the problem you have is about GPMC NAND primary boot or USB-DFU secondary boot?

Hi RJ,

Thanks for the information.

It sounds like the U-Boot binaries flashed to NAND through USB-DFU is not correct. Then ROM loaded the bootloader to memory but failed to execute it on R5F. But at this point of execution, ROM is done and won't be able to switch to the second boot mode (DFU).

To confirm this, if your board has JTAG connection, you can try to connect to R5 in CCS, and see what its PC address is.

Hi Bin Liu,

Thanks for the inputs ,

Bin Liu said:

f your board has JTAG connection, you can try to connect to R5 in CCS, and see what its PC address is.

can you share any document links how can i debug this .

regrads,

-RJ

Hi RJ,

I don't have a doc for this purpose, but once you launched the AM62x configuration in CCS, please try to connect to the R5 core. If the connection failed, it likely means the execution is still in ROM, the R5 core is not initialized yet. But if you can connect to the R5 core, the CCS register window will show all the R5 registers, pay attention to the value of the PC register.

Hi Bin liu,

I try to connect using XDS110 ,In CCS after selecting target as AM62 and connection as Texas instruments XDS110 USB debug probe , when i try to  verify it showing error ,

This error is generated by TI's USCIF driver or utilities.

The value is '-233' (0xffffff17).
The title is 'SC_ERR_PATH_BROKEN'.

regards,

RJ

Hi RJ,

Let's take a different approach, as I am very certain that the problem is that the NAND image (tiboot3.bin) wasn't flash correctly which causes ROM loaded it but unable to run it.

Can you please provide the details and/or console logs showing how exactly you configured and flashed the NAND image using DFU?

You also mentioned that you could boot from eMMC then flash the NAND. Can you boot from NAND after flashed from eMMC? You can also provide the details of the flashing process from eMMC for us to review.

Please also check the following instruction for the NAND flashing and boot.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1402705/faq-how-to-flash-and-boot-u-boot-from-parallel-gpmc-nand-on-am62x

Hi Bin Liu,

Bin Liu said:

Can you please provide the details and/or console logs showing how exactly you configured and flashed the NAND image using DFU?

Attaching below,

------------Build changes for NAND in SDK 10.00.07.04------------


UBOOT_MACHINE_R5=am62x_lpsk_r5_gpmc_defconfig



----------------uboot log---------------------------

U-Boot SPL 2024.04-dirty (Jan 02 2025 - 14:11:41 +0530)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.0.8--v10.00.08 (Fiery Fox)')
SPL initial stack usage: 13392 bytes
Trying to boot from DFU
#########################################################DOWNLOAD ... OK
Ctrl+C to exit ...
############################################################DOWNLOAD ... OK
Ctrl+C to exit ...                                                    
Authentication passed                                                 
Authentication passed                                                 
Authentication passed                                                 
Loading Environment from nowhere... OK
init_env from device 10 not supported!
Authentication passed
Authentication passed
Starting ATF on ARM64 core...
 
NOTICE:  BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b87-dirty
NOTICE:  BL31: Built : 16:09:05, Feb  9 2024
 
U-Boot SPL 2024.04-dirty (Jan 02 2025 - 14:12:20 +0530)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.0.8--v10.00.08 (Fiery Fox)')
SPL initial stack usage: 1888 bytes
** Bad device specification mmc 1 **
Couldn't find partition mmc 1:1
Error: could not access storage.
Trying to boot from DFU
Authentication passed
Authentication passed
 
 
U-Boot 2024.04-dirty (Jan 02 2025 - 14:12:20 +0530)
 
SoC:   AM62X SR1.0 HS-FS
Model: Texas Instruments AM625 SK
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -19
DRAM:  1 GiB
Core:  59 devices, 30 uclasses, devicetree: separate
NAND:  256 MiB
MMC:   mmc@fa10000: 0
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -121
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  0 
=> nand erase.chip
 
NAND erase.chip: device 0 whole chip
Erasing at 0xffe0000 -- 100% complete.
OK
=> setenv dfu_alt_info "tiboot3.bin raw 0x0 0x200000; tispl.bin raw 0x200000 0x400000; u-boot.img raw 0x6000"
=> dfu 0 mtd nand0
generic_phy_get_bulk : no phys property
###DOWNLOAD ... OK
Ctrl+C to exit ...
#########DOWNLOAD ... OK
Ctrl+C to exit ...
########DOWNLOAD ... OK
Ctrl+C to exit ...


-----------------dfu log -----------------------------------------------

:~/tisdk/board-support/u-boot-build/bin/nand_usb_v2$ sudo dfu-util -l
dfu-util 0.9
 
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
 
Found DFU: [0451:6165] ver=0223, devnum=67, cfg=1, intf=0, path="1-9", alt=2, name="u-boot.img", serial="0000000000000000"
Found DFU: [0451:6165] ver=0223, devnum=67, cfg=1, intf=0, path="1-9", alt=1, name="tispl.bin", serial="0000000000000000"
Found DFU: [0451:6165] ver=0223, devnum=67, cfg=1, intf=0, path="1-9", alt=0, name="tiboot3.bin", serial="0000000000000000"
:~/tisdk/board-support/u-boot-build/bin/nand_usb_v2$ cd ../nand
:~/tisdk/board-support/u-boot-build/bin/nand$ 
:~/tisdk/board-support/u-boot-build/bin/nand$ sudo dfu-util -a 0 -D tiboot3.bin
dfu-util 0.9
 
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
 
dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 0451:6165
Run-time device DFU version 0110
Claiming USB DFU Interface...
Setting Alternate Setting #0 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 4096
Copying data from PC to DFU device
Download	[=========================] 100%       323062 bytes
Download done.
state(7) = dfuMANIFEST, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
:~/tisdk/board-support/u-boot-build/bin/nand$ sudo dfu-util -a 1 -D tispl.bin
dfu-util 0.9
 
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
 
dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 0451:6165
Run-time device DFU version 0110
Claiming USB DFU Interface...
Setting Alternate Setting #1 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 4096
Copying data from PC to DFU device
Download	[=========================] 100%      1111383 bytes
Download done.
state(7) = dfuMANIFEST, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
:~/tisdk/board-support/u-boot-build/bin/nand$ sudo dfu-util -a 2 -D u-boot.img
dfu-util 0.9
 
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
 
dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 0451:6165
Run-time device DFU version 0110
Claiming USB DFU Interface...
Setting Alternate Setting #2 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 4096
Copying data from PC to DFU device
Download	[=========================] 100%      1004467 bytes
Download done.
state(7) = dfuMANIFEST, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
----------------------------------------------------------------------------------------------

Regards,

RJ

This is the FAQ on flashing u-boot to GPMC-NAND with USB-DFU on AM62x for your reference
Best,
-Hong

Hi Hong ,

Hong Guan64 said:

This is the FAQ on flashing u-boot to GPMC-NAND with USB-DFU on AM62x for your reference

Attaching the logs based on reference above ,

RJ DJ said:

Attaching below,

Regards,

RJ

I forgot adding the FAQ link in my last reply.
Here is the FAQ link on flashing u-boot to GPMC-NAND with USB-DFU on AM62x for your rerference.
https://e2e.ti.com/support/processors-group/processors/f/791/t/1460090
Best,
-Hong

Hi Hong ,

I already got the link , and logs are attached above in previous replays ,

Regards,

-RJ