[Buildroot] [PATCH v3] tpm2-tools: drop dependency on tpm2-abrmd
Yann E. MORIN
yann.morin.1998 at free.fr
Mon Jan 28 21:11:24 UTC 2019
Peter, All,
On 2019-01-25 16:03 +0100, Peter Korsgaard spake thusly:
> tpm2-tools is commonly used with the resource manager, tpm2-abrmd - But it
> CAN be used without, E.G. by setting the TPM2TOOLS_TCTI_NAME environment
> variable to communicate directly with the kernel driver:
>
> export TPM2TOOLS_TCTI_NAME=device
>
> Either directly with the TPM device (/dev/tpmN) or through the in-kernel
> resource manager provided by Linux kernel since 4.12 (/dev/tpmrmN)
>
> For some use cases (E.G. initramfs) it makes sense to use tpm2-tools
> without abrmd, so remove the tpm2-abrmd select, and instead a note in the
> help text that it may be needed.
>
> Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Thank you. :-)
Regards,
Yann E. MORIN.
> ---
> Changes since v2:
> - Drop the imply and instead add a comment as suggested by Yann and Arnout
>
> package/tpm2-tools/Config.in | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/package/tpm2-tools/Config.in b/package/tpm2-tools/Config.in
> index cc87e2a1bf..d8660a8f71 100644
> --- a/package/tpm2-tools/Config.in
> +++ b/package/tpm2-tools/Config.in
> @@ -8,7 +8,6 @@ config BR2_PACKAGE_TPM2_TOOLS
> select BR2_PACKAGE_LIBCURL
> select BR2_PACKAGE_LIBGLIB2
> select BR2_PACKAGE_OPENSSL
> - select BR2_PACKAGE_TPM2_ABRMD # run-time
> select BR2_PACKAGE_TPM2_TSS
> help
> TPM (Trusted Platform Module) 2.0 CLI tools based on system
> @@ -17,6 +16,11 @@ config BR2_PACKAGE_TPM2_TOOLS
> and manage non-volatile storage through a TPM2.0 HW
> implementation.
>
> + Notice: An in-kernel resource manager is provided by the
> + Linux kernel since 4.12. Depending on use cases and kernel
> + version, the user space resource manager provided by
> + tpm2-abrmd may be needed.
> +
> https://github.com/tpm2-software/tpm2-tools
>
> comment "tpm2-tools needs a toolchain w/ dynamic library, wchar, threads"
> --
> 2.11.0
>
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