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authorPeter Jones <pjones@redhat.com>2017-08-01 12:54:25 -0400
committerPeter Jones <pjones@redhat.com>2017-08-03 11:24:56 -0400
commit631265b7e9c447412d423ffed1b39dfd706054cd (patch)
treeb0f881a8bf2eedd69fde2e398a565e9e8f16dc64 /README
parent9abedc47f521ed7b439ceb24730d22a33bc6e03b (diff)
downloadefi-boot-shim-631265b7e9c447412d423ffed1b39dfd706054cd.tar.gz
efi-boot-shim-631265b7e9c447412d423ffed1b39dfd706054cd.zip
Add README.tpm to explain which PCRs we extend things to.
Signed-off-by: Peter Jones <pjones@redhat.com>
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@@ -12,5 +12,9 @@ in the shim.h header file and provides a single entry point. On 64-bit systems
this entry point expects to be called with SysV ABI rather than MSABI, and
so calls to it should not be wrapped.
+On systems with a TPM chip enabled and supported by the system firmware,
+shim will extend various PCRs with the digests of the targets it is
+loading. A full list is in the file README.tpm .
+
To use shim, simply place a DER-encoded public certificate in a file such as
pub.cer and build with "make VENDOR_CERT_FILE=pub.cer".