quick question about TPM

[Simon Glass]

+Ilias Apalodimas as well

On Thu, 26 Oct 2023 at 02:22, niek.nooijens at omron.com
<niek.nooijens at omron.com> wrote:
>
> Hi Simon
>
> Yes that fixes it! Thanks!
> Maybe an Idea to add a dedicated TPM page to the docs with information like this?
> (https://u-boot.readthedocs.io/en/latest/index.html) Cause I wouldn't have thought I needed an option tugged away under Library routines.

Thank you for the feedback. I added Ilias to take a look.


- Simon

>
> Anyhow Thanks!
> Niek
>
>
>
> ________________________________
> 差出人: Simon Glass <sjg at google.com>
> 送信日時: 2023年10月26日 03:23
> 宛先: Niek Nooijens / OC-IAB PBD-C DEVEL 1-1 <niek.nooijens at omron.com>
> CC: u-boot at lists.denx.de <u-boot at lists.denx.de>
> 件名: Re: quick question about TPM
>
> Hi Niek,
>
> On Tue, 24 Oct 2023 at 19:26, niek.nooijens at omron.com
> <niek.nooijens at omron.com> wrote:
> >
> > Hi Simon
> >
> > Driver model is enabled, so it's pretty weird it doesn't show up.
> > CONFIG_DM=y
> > CONFIG_SPL_DM=y
> > CONFIG_DM_WARN=y
> >
> > The TPM menu is there, yet somehow empty.
> > This is just after "make socfpga_cyclone5_defconfig" and "make menuconfig"
>
> Do you enable CONFIG_TPM here?:
>
> Library routines -> Security support -> Trusted Platform Module (TPM) Support
>
> then the drivers appear for me (under device drivers)
>
> > if I use "make snow_defconfig" the menu is usable like normal, so something is disabling it, yet when grep-ping for TPM in socfpga there are no results.
> > Adding it to .config manually also doesn't seem to work. so I'm a bit confused about what's going on. Anyhow thanks for the help!
>
> You can edit the defconfig to add CONFIG_TPM and whatever driver you need.
>
> Regards,
> Simon
>
>
> >
> > Niek
> > ________________________________
> > 差出人: Simon Glass <sjg at google.com>
> > 送信日時: 2023年10月25日 03:03
> > 宛先: Niek Nooijens / OC-IAB PBD-C DEVEL 1-1 <niek.nooijens at omron.com>
> > CC: u-boot at lists.denx.de <u-boot at lists.denx.de>
> > 件名: Re: quick question about TPM
> >
> > Hi Niek,
> >
> > On Tue, 24 Oct 2023 at 04:51, niek.nooijens at omron.com
> > <niek.nooijens at omron.com> wrote:
> > >
> > > Hi
> > >
> > > Just a quick question. I'm developing a platform using the socfpga_cyclone5_defconfig
> > > everything is working, linux boots, but we decided to add a TPM to it's SPI bus.
> > > For some reason the TPM support menu in the menuconfig is disabled and I can't seem to find out why, or which file disables it. can you point me in the right direction?
> >
> > The only thing 'config TPM' depends on is DM (driver model). Is that
> > somehow disabled? Once you enable that, it should appear.
> >
> > Regards,
> > Simon