TDA4VM: TIFS load failed

Allen Shen

Prodigy 150 points

Part Number: TDA4VM

Hi,

I'm testing app signed with TI dummy key.

When app not signed, the board works normal.

STEP:

Using "make -s BOARD=j721e_evm CORE=mcu1_0 BUILD_PROFILE=release sbl_mmcsd_img -j8" generate sbl_mmcsd_img_mcu1_0_release.tiimage as tiboot3.bin
Copy rtos/pdk_jacinto_08_00_00_37/packages/ti/drv/sciclient/soc/V1/tifs.bin
Using "make -s board_diag_adc BOARD=j721e_evm -j8" generate board_diag_adc_mcu1_0_release.appimage as app

Copy all three Image to SD Card and power on the board, logs as below:

BL Revision: 01.00.10.01 (Dec 9 2021 - 14:41:18)
TIFS ver: 21.5.0--v2021.05 (Terrific Llam

**********************************************
ADC Test
**********************************************

Reading ADC 0
ADC Revision ID:
scheme: 1
Functional number: 2496
RTL revision: 7
Major revision: 1
Custom revision: 0
Major revision: 0

Channel 0: Voltage Level is 933mV
Channel 1: Voltage Level is 941mV
Channel 2: Voltage Level is 941mV
Channel 3: Voltage Level is 943mV
Channel 4: Voltage Level is 939mV
Channel 5: Voltage Level is 923mV
Channel 6: Voltage Level is 928mV
Channel 7: Voltage Level is 935mV

Reading ADC 1
ADC Revision ID:
scheme: 1
Functional number: 2496
RTL revision: 7
Major revision: 1
Custom revision: 0
Major revision: 0

Channel 0: Voltage Level is 903mV
Channel 1: Voltage Level is 926mV
Channel 2: Voltage Level is 941mV
Channel 3: Voltage Level is 935mV
Channel 4: Voltage Level is 945mV
Channel 5: Voltage Level is 952mV
Channel 6: Voltage Level is 931mV
Channel 7: Voltage Level is 974mV
ADC Test Passed

When using signed app

STEP:

Using "make -s BOARD=j721e_evm CORE=mcu1_0 BUILD_PROFILE=release sbl_mmcsd_img_hs -j8" generate sbl_mmcsd_img_mcu1_0_release.tiimage as tiboot3.bin
Copy rtos/pdk_jacinto_08_00_00_37/packages/ti/drv/sciclient/soc/V1/tifs-hs-enc.bin as tifs.bin
Using "make -s board_diag_adc BOARD=j721e_evm -j8" generate board_diag_adc_mcu1_0_release.appimage.signed as app

Copy all three Image to SD Card and power on the board, logs as below:

BL Revision: 01.00.10.01 (Dec 9 2021 - 14:44:07)

TIFS load...FAILED

Why tifs load failed?

over 4 years ago

0 Steve Reis over 4 years ago

TI__Genius 17625 points

Are you sure you have a Dummy Key device?

If first set of 3 steps works, then I would say you have a GP device. Those steps should not work on HS Dummy Key device.

0 Allen Shen over 4 years ago in reply to Steve Reis

Prodigy 150 points

Hi,

I'm using a GP device (TDA4 EVM board).

In https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/08_00_00_12/exports/docs/pdk_jacinto_08_00_00_37/docs/userguide/jacinto/boot/boot_k3.html#building-the-sbl-and-its-components

says

"While SBL and system firmware images signed with the TI Dummy Keys will work on both GP and HS devices, the boot time will be significantly impacted on GP devices. Using SBL signed by TI Dummy Keys on GP devices is only recommended during the prototyping phase - when porting code developed on GP to HS devices."

What needs to be done to enable a GP device to run Images signed with TI dummy key? Or is it only possible to run Images signed with TI dummy key on HS Dummy Key device?

+1 Steve Reis over 4 years ago in reply to Allen Shen

TI__Genius 17625 points

TL;DR

It is only possible to run Images signed with TI dummy key on HS Dummy Key device.

More details for signed image on GP device:

The signed SBL will actually start since the GP device skips true authentication
But, the signed TIFS image is actually dual signed and encrypted and this will fail on a GP device - as you are seeing
You also cannot use a signed boardcfg image

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TDA4VM: TIFS load failed