TPM initialization in uboot

Sophia Kalibo

Intellectual 490 points

Hi,

I am using AM335x Starter Kit and try with an I2C TPM chip.

I want to set the TPM enable and active in u-boot, and also want to have the ForceClear function in u-boot.

Does there have any resource to control I2C TPM chip in u-boot?

Thank you !

over 12 years ago

0 Miroslav Kiradzhiyski XID over 12 years ago

TI__Mastermind 25235 points

Hi,

U-Boot has a working I2C interface. While in U-Boot, type "help i2c" to show all the available i2c functions.

Typing "i2c probe" should show you the addresses of all the I2C devices connected to the current bus. Then you can read/write to them.

Best regards,
Miroslav

0 Tom Rini over 12 years ago

TI__Intellectual 1505 points

Also look at the top-level README in U-Boot (specifically mainline from git.denx.de) for CONFIG_TPM as a number of TPM devices are supported in the community, by the community.

0 Sophia Kalibo over 12 years ago in reply to Tom Rini

Intellectual 490 points

Hi,

Thanks Miroslav and Tom!

I am using Infineon SLB9645 I2C TPM chip.

And I also find an reference site : libsboot

(http://prosauce.org/blog/2013/2/11/embedded-trust-p2-u-boot-secured-boot.html )

Does anyone have used this library?

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TPM initialization in uboot