imx6q secure boot

rakesh3 · ‎03-14-2023

Hi team,

Could you please provide the latest document to follow for signing the u-boot (v-2021) and kernel(v- 5.10) image for secure boot.

Regards,

Rk

Harvey021 · ‎03-18-2023

Hi @rakesh3

It seems no DCD block entry in your CSF, then try not use SDP mode.

Best regards

Harvey

rakesh3 · ‎03-19-2023

Hi Harvey,

I am not using the SDP mode(UUU), i am directly copying the u-boot-signed image to boot partition and then booting it. and getting mentioned events.

Does it really required to fuse the key using the fuse before running the hab_status cmd or we can check the hab_status events before using the fuse also .?

Regards,

Rakesh

Harvey021 · ‎03-19-2023

Hi

Yes, it is needed to establish root of trust. You can have a try with openssl tool.

Best regardss

Harvey

rakesh3 · ‎03-19-2023

Thanks for reply Harvey,

Now i am getting just one warning in hab_status.

U-Boot > hab_status

Secure boot disabled

HAB Configuration: 0xf0, HAB State: 0x66

--------- HAB Event 1 -----------------
event data:
0xdb 0x00 0x24 0x42 0x69 0x30 0xe1 0x1d
0x00 0x04 0x00 0x02 0x40 0x00 0x36 0x06
0x55 0x55 0x00 0x03 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x01

STS = HAB_WARNING (0x69)
RSN = HAB_ENG_FAIL (0x30)
CTX = HAB_CTX_ENTRY (0xE1)
ENG = HAB_ENG_CAAM (0x1D)

Could you please suggest how to remove this warning and close the device .

Regards,

Rk

Harvey021 · ‎03-16-2023

Hi @rakesh3

Please refer to the link (habv4\imx\doc - uboot-imx - i.MX U-Boot (codeaurora.org)) for guides.

Best regards

Harvey

rakesh3 · ‎03-17-2023

Hi Harvey,

Thanks for doc.

I am having below u-boot-dtb.imx.log file .

Image Type: Freescale IMX Boot Image
Image Ver: 2 (i.MX53/6/7 compatible)
Mode: DCD
Data Size: 610400 Bytes = 596.09 KiB = 0.58 MiB
Load Address: 177ff420
Entry Point: 17800000
HAB Blocks: 0x177ff400 0x00000000 0x00092c00
DCD Blocks: 0x00910000 0x0000002c 0x000002f8

and i am using the below csf-uboot.txt file as CSF

[Header]
Version = 4.2
Hash Algorithm = sha256
Engine Configuration = 0
Certificate Format = X509
Signature Format = CMS
Engine = CAAM

[Install SRK]
# Index of the key location in the SRK table to be installed
File = "../../crts/SRK_1_2_3_4_table.bin"
Source index = 0

[Install CSFK]
# Key used to authenticate the CSF data
File = "../../crts/CSF1_1_sha256_2048_65537_v3_usr_crt.pem"

[Authenticate CSF]

[Install Key]
# Key slot index used to authenticate the key to be installed
Verification index = 0
# Target key slot in HAB key store where key will be installed
Target Index = 2
# Key to install
File= "../../crts/IMG1_1_sha256_2048_65537_v3_usr_crt.pem"

[Authenticate Data]
# Key slot index used to authenticate the image data
Verification index = 2
# Authenticate Start Address, Offset, Length and file
Blocks = 0x177ff400 0x00000000 0x00092c00 "u-boot-dtb.imx"

I think i am correct on Blocks field of Authentication same as HAB block in u-boot-dtb.imx.log file but unfortunately i am still getting the below HAB error.

MX6 HORIZON U-Boot > hab_status

Secure boot disabled

HAB Configuration: 0xf0, HAB State: 0x66

--------- HAB Event 1 -----------------
event data:
0xdb 0x00 0x24 0x42 0x69 0x30 0xe1 0x1d
0x00 0x04 0x00 0x02 0x40 0x00 0x36 0x06
0x55 0x55 0x00 0x03 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x01

STS = HAB_WARNING (0x69)
RSN = HAB_ENG_FAIL (0x30)
CTX = HAB_CTX_ENTRY (0xE1)
ENG = HAB_ENG_CAAM (0x1D)

--------- HAB Event 2 -----------------
event data:
0xdb 0x00 0x14 0x42 0x33 0x0c 0xa0 0x00
0x00 0x00 0x00 0x00 0x17 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 0x17 0x7f 0xf4 0x2c
0x00 0x00 0x02 0xf8

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 0x17 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 0x17 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)

--------- HAB Event 6 -----------------
event data:
0xdb 0x00 0x14 0x42 0x33 0x21 0xc0 0x00
0xbe 0x00 0x0c 0x00 0x03 0x17 0x00 0x00
0x00 0x00 0x00 0x48

STS = HAB_FAILURE (0x33)
RSN = HAB_INV_CERTIFICATE (0x21)
CTX = HAB_CTX_COMMAND (0xC0)
ENG = HAB_ENG_ANY (0x00)

MX6 HORIZON U-Boot >