iMX6UL not fuse value into board

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iMX6UL not fuse value into board

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le_phuong_nam
Contributor I

Hi experts,

I started working on secure boot HAB and I have a few questions about u-boot signature.

I make an u-boot.imx-ivt_signed, then I dd that file into the sdcard. When I run boot mode, command "hab_status", it shows

U-Boot 2015.04-imx_v2018.03_4.14.98_2.0.0_ga+g2087693 (Aug 20 2019 - 03:59:08)

CPU:   Freescale i.MX6UL rev1.1 at 396 MHz
CPU:   Temperature 35 C
Reset cause: POR
Board: MX6UL 14x14 EVK
I2C:   ready
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

Display: TFT43AB (480x272)
Video: 480x272x24
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc1 is current device
Net:   got MAC1 address from fuse: 00:04:9f:04:b7:49
FEC1
Normal Boot
Hit any key to stop autoboot:  0 
=> hab_status

Secure boot disabled

HAB Configuration: 0xf0, HAB State: 0x66

--------- HAB Event 1 -----------------
event data:
        0xdb 0x00 0x08 0x42 0x33 0x11 0xcf 0x00

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_CSF (0x11)
CTX = HAB_CTX_CSF (0xCF)
ENG = HAB_ENG_ANY (0x00)


--------- HAB Event 2 -----------------
event data:
        0xdb 0x00 0x14 0x42 0x33 0x0c 0xa0 0x00
        0x00 0x00 0x00 0x00 0x87 0x7f 0xf4 0x00
        0x00 0x00 0x00 0x20

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ASSERTION (0x0C)
CTX = HAB_CTX_ASSERT (0xA0)
ENG = HAB_ENG_ANY (0x00)


--------- HAB Event 3 -----------------
event data:
        0xdb 0x00 0x14 0x42 0x33 0x0c 0xa0 0x00
        0x00 0x00 0x00 0x00 0x87 0x7f 0xf4 0x2c
        0x00 0x00 0x01 0xe8

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ASSERTION (0x0C)
CTX = HAB_CTX_ASSERT (0xA0)
ENG = HAB_ENG_ANY (0x00)


--------- HAB Event 4 -----------------
event data:
        0xdb 0x00 0x14 0x42 0x33 0x0c 0xa0 0x00
        0x00 0x00 0x00 0x00 0x87 0x7f 0xf4 0x20
        0x00 0x00 0x00 0x01

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ASSERTION (0x0C)
CTX = HAB_CTX_ASSERT (0xA0)
ENG = HAB_ENG_ANY (0x00)


--------- HAB Event 5 -----------------
event data:
        0xdb 0x00 0x14 0x42 0x33 0x0c 0xa0 0x00
        0x00 0x00 0x00 0x00 0x87 0x80 0x00 0x00
        0x00 0x00 0x00 0x04

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_ASSERTION (0x0C)
CTX = HAB_CTX_ASSERT (0xA0)
ENG = HAB_ENG_ANY (0x00)

Then I run e-fuse, with "fuse prog -y 3 ..." the value isn't writen in to the board (use command "fuse read 3 0" to check); with "fuse override -y 3 ..." the value will be clear when I reset the board.

U-Boot 2015.04-imx_v2018.03_4.14.98_2.0.0_ga+g2087693 (Aug 20 2019 - 03:59:08)

CPU:   Freescale i.MX6UL rev1.1 at 396 MHz
CPU:   Temperature 43 C
Reset cause: WDOG
Board: MX6UL 14x14 EVK
I2C:   ready
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

Display: TFT43AB (480x272)
Video: 480x272x24
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc1 is current device
Net:   got MAC1 address from fuse: 00:04:9f:04:b7:49
FEC1
Normal Boot
Hit any key to stop autoboot:  0 
=> fuse prog -y 3 0 0x97A948D5
Programming bank 3 word 0x00000000 to 0x97a948d5...
=> fuse read 3 0
Reading bank 3:

Word 0x00000000: ffffffff
=> fuse override -y 3 0 0x97A948D5
Overriding bank 3 word 0x00000000 with 0x97a948d5...
=> fuse read 3 0                  
Reading bank 3:

Word 0x00000000: 97a948d5
=> save 
Saving Environment to MMC...
Writing to MMC(1)... done
=> reset
resetting ...


U-Boot 2015.04-imx_v2018.03_4.14.98_2.0.0_ga+g2087693 (Aug 20 2019 - 03:59:08)

CPU:   Freescale i.MX6UL rev1.1 at 396 MHz
CPU:   Temperature 44 C
Reset cause: WDOG
Board: MX6UL 14x14 EVK
I2C:   ready
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
Display: TFT43AB (480x272)
Video: 480x272x24
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc1 is current device
Net:   got MAC1 address from fuse: 00:04:9f:04:b7:49
FEC1
Normal Boot
Hit any key to stop autoboot:  0 
=> fuse read 3 0
Reading bank 3:

Word 0x00000000: ffffffff‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I don't know what the problem do I have? And how can I fix it?

Thanks,

Nam.

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50 Views
b36401
NXP TechSupport
NXP TechSupport

Please note that "fuse override" command overrides only shadow register.
This operation does not affects the fusebox, it will be cleaned after reset.
This command may be useful for testing purpose.
You need to use "fuse prog" instead.

Have a great day,
Victor

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le_phuong_nam
Contributor I

Hi Victor,

Thanks for your help!

But my secure_boot always shows error

=> hab_status

Secure boot disabled

HAB Configuration: 0xf0, HAB State: 0x66

--------- HAB Event 1 -----------------
event data:
        0xdb 0x00 0x08 0x42 0x33 0x11 0xcf 0x00

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_CSF (0x11)
CTX = HAB_CTX_CSF (0xCF)
ENG = HAB_ENG_ANY (0x00)‍‍‍‍‍‍‍‍‍‍‍‍‍‍

From the first time to now, I have never get

No HAB Events Found!

I don't know the cause of this problem.

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