xen: TPM Emulator for Xen stubdoms

TPM Emulator is a software-based TPM and MTM emulator. This TPM Emulator
recipe creates a static library that is cross-compiled against MiniOS,
Xen, LWIP, Newlib, PolarSSL, and the stubdom-specific GMP headers and
subsequently used during the cross-compilation and linking of the Xen
vTPM and vTPM Manager stubdomains.

The current Xen source code is hardcoded to fetch a specific version of
this package. The patch files originate from the Xen/stubdom source
tree. This recipe provides the flexibility to change version or modify
the patches.

Signed-off-by: Kurt Bodiker <kurt.bodiker@braintrust-us.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch b/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch
new file mode 100644
index 00000000..e95d41fc
--- /dev/null
+++ b/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch
@@ -0,0 +1,10 @@
+--- a/tpm/tpm_cmd_handler.c.orig        2017-04-27 13:37:14.408000000 +0200
++++ b/tpm/tpm_cmd_handler.c     2017-04-27 13:39:53.585000000 +0200
+@@ -3397,6 +3397,7 @@
+                   sizeof(rsp->auth2->nonceOdd.nonce));
+       tpm_hmac_update(&hmac, (BYTE*)&rsp->auth2->continueAuthSession, 1);
+       tpm_hmac_final(&hmac, rsp->auth2->auth);
++      /* fall-thru */
+     case TPM_TAG_RSP_AUTH1_COMMAND:
+       tpm_hmac_init(&hmac, rsp->auth1->secret, sizeof(rsp->auth1->secret));
+       tpm_hmac_update(&hmac, rsp->auth1->digest, sizeof(rsp->auth1->digest));