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tpm2-tools: drop dependency on tpm2-abrmd

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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>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 7b8feba51d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Peter Korsgaard
2019-01-25 16:03:04 +01:00
parent bc2a8fbdab
commit 3e17b25da2
1 changed files with 5 additions and 1 deletions
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6
package/tpm2-tools/Config.in
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@@ -9,7 +9,6 @@ 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
@@ -18,6 +17,11 @@ 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 uClibc or glibc toolchain w/ C++, wchar, threads"