security/intel/txt: Create Intel TXT lib with helper functions
This patch decouples useful TXT related operations from the romstage.c
file alone and moves them into a helper txtlib.c. This effort will be
helpful for SoC users to perform TXT related operations
(like Disabling TXT) even without selecting INTEL_TXT config.
At present, those helper functions are only available upon selecting
INTEL_TXT which is not getting enabled for most of the SoC platform in
the scope of the Chromebooks.
TEST=Able to access functions from txtlib.c even without selecting
INTEL_TXT config.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Iff5b4e705e18cbaf181b4c71bfed368c3ed047ed
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71573
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
diff --git a/src/security/intel/txt/Makefile.inc b/src/security/intel/txt/Makefile.inc
index 7132ca8..e19bacf 100644
--- a/src/security/intel/txt/Makefile.inc
+++ b/src/security/intel/txt/Makefile.inc
@@ -1,3 +1,5 @@
+romstage-$(CONFIG_INTEL_TXT_LIB) += txtlib.c
+
ifeq ($(CONFIG_INTEL_TXT),y)
all-y += logging.c