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AM625: u-boot tispl.bin ti-sci authentication failed

Frederik Hansen
Prodigy 70 points

Part Number: AM625

I am trying to boot u-boot on an HS AM625 device, i have changed the keys in "arch/arm/mack-k3/keys" to my custom keys, and i know the signing works because my tiboot3.bin file boots on the device no problem. My issue arrised when the R5 SPL tries loading tispl.bin. I get the following error:

```

U-Boot SPL 2026.01-ti-g127a42c7257a (Jan 05 2026 - 20:49:22 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000c '12.0.2--v12.00.02 (Clever Cat)')
Changed A53 CPU frequency to 1250000000Hz (T grade) in DT
SPL initial stack usage: 13384 bytes
Trying to boot from DFU
dwc3-am62 dwc3-usb@f900000: unable to get ti,syscon-phy-pll-refclk regmap
#####DOWNLOAD ... OK
Ctrl+C to exit ...
####DOWNLOAD ... OK
Ctrl+C to exit ...
ti_sci system-controller@44043000: Message not acknowledged
Authentication failed!
### ERROR ### Please RESET the board ###

```

  • 0
    TI__Guru* 80840 points

    I'm attaching a pair of dfu working log (one host side, one target side) with AM62x 12.0.0.7.4 on AM62-SK (HS-SE).
    Do we have usb-dfu working on your setup previously?
    Best,
    -Hong

    Fullscreen am62_12.0.0.7.4_dfu_target.log Download 
    U-Boot SPL 2026.01-g2549829cc194-dirty (Jul 20 2026 - 14:43:18 -0500)
SYSFW ABI: 4.0 (firmware rev 0x000c '12.0.2--v12.00.02 (Clever Cat)')
Set clock rates for '/a53@0', CPU: 1250MHz at Speed Grade 'T'
SPL initial stack usage: 13432 bytes
Trying to boot from DFU
######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: v2.14.0(release):sandbox/v2.14-472-g76500ceaee
NOTICE:  BL31: Built : 11:33:22, Feb  2 2026

U-Boot SPL 2026.01-g2549829cc194-dirty (Jul 20 2026 - 14:43:54 -0500)
SYSFW ABI: 4.0 (firmware rev 0x000c '12.0.2--v12.00.02 (Clever Cat)')
SPL initial stack usage: 2048 bytes
MMC: no card present
** Bad device specification mmc 1 **
Couldn't find partition mmc 1:1
Error: could not access storage.
Trying to boot from DFU
######DOWNLOAD ... OK
Ctrl+C to exit ...
Authentication passed
Authentication passed


U-Boot 2026.01-g2549829cc194-dirty (Jul 20 2026 - 14:43:54 -0500)

SoC:   AM62X SR1.0 HS-SE
Reset reason: POR
Model: Texas Instruments AM625 SK
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -19
DRAM:  2 GiB
Core:  93 devices, 35 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
EEPROM not available at 0x50, trying to read at 0x51
Net:   eth0: ethernet@8000000port@1

Hit any key to stop autoboot:  2 
Hit any key to stop autoboot: 1
Hit any key to stop autoboot: 0
=>

    Fullscreen am62_12.0.0.7.4_dfu_host.log Download 
    jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/r5$ 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=0200, devnum=118, cfg=1, intf=0, path="1-1", alt=1, name="SocId", serial="01.00.00.00"
Found DFU: [0451:6165] ver=0200, devnum=118, cfg=1, intf=0, path="1-1", alt=0, name="bootloader", serial="01.00.00.00"
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/r5$ sudo dfu-util -R -a bootloader -D tiboot3-am62x-hs-evm.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 512
Copying data from PC to DFU device
Download	[=========================] 100%       304650 bytes
Download done.
state(6) = dfuMANIFEST-SYNC, status(0) = No error condition is present
dfu-util: unable to read DFU status after completion
dfu-util: can't detach
Resetting USB to switch back to runtime mode
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/r5$ cd ..
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu$ cd a53
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/a53$ sudo dfu-util -R -a tispl.bin -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 #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%      1330059 bytes
Download done.
state(7) = dfuMANIFEST, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
Resetting USB to switch back to runtime mode
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/a53$ sudo dfu-util -R  -a u-boot.img -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 #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%      1448531 bytes
Download done.
state(7) = dfuMANIFEST, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
Resetting USB to switch back to runtime mode
jason@laptop:~/am6/am62_12.0.0.7.4/board-support/u-boot-build_dfu/a53$

  • 0 in reply to Hong Guan64
    Prodigy 70 points

    My DFU-USB setup workes fine on our hs_fs hardware, however tispl will not load after burning the keys and turning the device into an HS device.

    I suspect this is an issue with the signing of the firmware in tispl.bin however i do not have access to my work computer right now.

  • 0 in reply to Frederik Hansen
    TI__Guru* 80840 points

    I'd recommend having a review on tispl.bin signing process with the customer key.
    Best,
    -Hong