[Buildroot] [PATCH v3] tpm2-tools: drop dependency on tpm2-abrmd

[Yann E. MORIN <yann.morin.1998@free.fr>]

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@korsgaard.com>

Acked-by: "Yann E. MORIN" <yann.morin.1998@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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