Refactor and Update the tcti-x-helper

- Moved common transmit/receive FIFO protocol code to tcti-helper-common. - Refined the FIFO protocol implementation. - Updated unit test implementation so that changes to the FIFO protocol no longer require modifications to all dependent unit tests. Signed-off-by: wenxin.leong <wenxin.leong@infineon.com>
tpm2-software · Sep 24, 2024 · 5140843 · 5140843
1 parent f5ee2b6
commit 5140843
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Showing 18 changed files with 3,352 additions and 2,241 deletions.
diff --git a/Makefile-test.am b/Makefile-test.am
@@ -128,6 +128,9 @@ endif
 if ENABLE_TCTI_CMD
 TESTS_UNIT += test/unit/tcti-cmd
 endif
+if ENABLE_TCTI_HELPER_COMMON
+TESTS_UNIT += test/unit/tcti-helper-common
+endif
 if ENABLE_TCTI_SPI_HELPER
 TESTS_UNIT += test/unit/tcti-spi-helper
 endif
@@ -531,16 +534,30 @@ test_unit_tcti_cmd_SOURCES = test/unit/tcti-cmd.c \
     test/helper/cmocka_all.h
 endif
 
+if ENABLE_TCTI_HELPER_COMMON
+test_unit_tcti_helper_common_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
+test_unit_tcti_helper_common_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_helper_common) $(libtss2_mu) $(libutil)
+test_unit_tcti_helper_common_SOURCES = test/unit/tcti-helper-common.c \
+    src/tss2-tcti/tcti-common.c \
+    test/helper/cmocka_all.h
+endif
+
 if ENABLE_TCTI_SPI_HELPER
 test_unit_tcti_spi_helper_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_spi_helper_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_spi_helper)
+test_unit_tcti_spi_helper_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
+test_unit_tcti_spi_helper_LDFLAGS = -Wl,--wrap=Tss2_Tcti_Helper_Common_Init \
+                                   -Wl,--wrap=Tss2_Tcti_Helper_Common_Transmit \
+                                   -Wl,--wrap=Tss2_Tcti_Helper_Common_Receive
 test_unit_tcti_spi_helper_SOURCES = test/unit/tcti-spi-helper.c \
-    test/helper/cmocka_all.h
+    test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c \
+    src/tss2-tcti/tcti-helper-common.h \
+    src/tss2-tcti/tcti-spi-helper.c
 endif
 
 if ENABLE_TCTI_SPI_LTT2GO
 test_unit_tcti_spi_ltt2go_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_spi_ltt2go_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_spi_helper)
+test_unit_tcti_spi_ltt2go_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
 test_unit_tcti_spi_ltt2go_LDFLAGS = -Wl,--wrap=libusb_bulk_transfer \
                                    -Wl,--wrap=libusb_claim_interface \
                                    -Wl,--wrap=libusb_open \
@@ -560,49 +577,63 @@ test_unit_tcti_spi_ltt2go_LDFLAGS = -Wl,--wrap=libusb_bulk_transfer \
                                    -Wl,--wrap=libusb_set_auto_detach_kernel_driver \
                                    -Wl,--wrap=libusb_strerror \
                                    -Wl,--wrap=select \
-                                   -Wl,--wrap=gettimeofday
+                                   -Wl,--wrap=gettimeofday \
+                                   -Wl,--wrap=Tss2_Tcti_Spi_Helper_Init
 test_unit_tcti_spi_ltt2go_SOURCES = test/unit/tcti-spi-ltt2go.c \
-    src/tss2-tcti/tcti-spi-ltt2go.c test/helper/cmocka_all.h
+    test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c \
+    src/tss2-tcti/tcti-spi-helper.h \
+    src/tss2-tcti/tcti-spi-ltt2go.c
 endif
 
 if ENABLE_TCTI_SPIDEV
 test_unit_tcti_spidev_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_spidev_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_spi_helper)
+test_unit_tcti_spidev_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
 test_unit_tcti_spidev_LDFLAGS = -Wl,--wrap=open \
                                 -Wl,--wrap=close \
                                 -Wl,--wrap=ioctl \
                                 -Wl,--wrap=select \
-                                -Wl,--wrap=gettimeofday
+                                -Wl,--wrap=gettimeofday \
+                                -Wl,--wrap=Tss2_Tcti_Spi_Helper_Init
 test_unit_tcti_spidev_SOURCES = test/unit/tcti-spidev.c \
-    src/tss2-tcti/tcti-spidev.c test/helper/cmocka_all.h
+    src/tss2-tcti/tcti-spidev.c test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c src/tss2-tcti/tcti-spi-helper.h
 endif
 
 if ENABLE_TCTI_SPI_FTDI
 test_unit_tcti_spi_ftdi_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_spi_ftdi_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_spi_helper)
+test_unit_tcti_spi_ftdi_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
 test_unit_tcti_spi_ftdi_LDFLAGS = -Wl,--wrap=Close \
                                   -Wl,--wrap=MPSSE \
-                                  -Wl,--wrap=PinHigh \
-                                  -Wl,--wrap=PinLow \
                                   -Wl,--wrap=Start \
                                   -Wl,--wrap=Stop \
                                   -Wl,--wrap=Transfer \
                                   -Wl,--wrap=select \
-                                  -Wl,--wrap=gettimeofday
+                                  -Wl,--wrap=gettimeofday \
+                                  -Wl,--wrap=Tss2_Tcti_Spi_Helper_Init
 test_unit_tcti_spi_ftdi_SOURCES = test/unit/tcti-spi-ftdi.c \
-    src/tss2-tcti/tcti-spi-ftdi.c test/helper/cmocka_all.h
+    test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c \
+    src/tss2-tcti/tcti-spi-helper.h \
+    src/tss2-tcti/tcti-spi-ftdi.c
 endif
 
 if ENABLE_TCTI_I2C_HELPER
 test_unit_tcti_i2c_helper_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_i2c_helper_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_i2c_helper)
+test_unit_tcti_i2c_helper_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
+test_unit_tcti_i2c_helper_LDFLAGS = -Wl,--wrap=Tss2_Tcti_Helper_Common_Init \
+                                   -Wl,--wrap=Tss2_Tcti_Helper_Common_Transmit \
+                                   -Wl,--wrap=Tss2_Tcti_Helper_Common_Receive
 test_unit_tcti_i2c_helper_SOURCES = test/unit/tcti-i2c-helper.c \
-    test/helper/cmocka_all.h
+    test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c \
+    src/tss2-tcti/tcti-helper-common.h \
+    src/tss2-tcti/tcti-i2c-helper.c
 endif
 
 if ENABLE_TCTI_I2C_FTDI
 test_unit_tcti_i2c_ftdi_CFLAGS  = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)
-test_unit_tcti_i2c_ftdi_LDADD   = $(CMOCKA_LIBS) $(libtss2_tcti_i2c_helper)
+test_unit_tcti_i2c_ftdi_LDADD   = $(CMOCKA_LIBS) $(libtss2_mu) $(libutil)
 test_unit_tcti_i2c_ftdi_LDFLAGS = -Wl,--wrap=MPSSE \
                                   -Wl,--wrap=Start \
                                   -Wl,--wrap=Stop \
@@ -613,9 +644,13 @@ test_unit_tcti_i2c_ftdi_LDFLAGS = -Wl,--wrap=MPSSE \
                                   -Wl,--wrap=SendAcks \
                                   -Wl,--wrap=SendNacks \
                                   -Wl,--wrap=select \
-                                  -Wl,--wrap=gettimeofday
+                                  -Wl,--wrap=gettimeofday \
+                                  -Wl,--wrap=Tss2_Tcti_I2c_Helper_Init
 test_unit_tcti_i2c_ftdi_SOURCES = test/unit/tcti-i2c-ftdi.c \
-    src/tss2-tcti/tcti-i2c-ftdi.c test/helper/cmocka_all.h
+    test/helper/cmocka_all.h \
+    src/tss2-tcti/tcti-common.c \
+    src/tss2-tcti/tcti-i2c-helper.h \
+    src/tss2-tcti/tcti-i2c-ftdi.c
 endif
 
 test_unit_tctildr_CFLAGS = $(CMOCKA_CFLAGS) $(TESTS_CFLAGS)

diff --git a/Makefile.am b/Makefile.am
@@ -422,6 +422,13 @@ endif # ENABLE_TCTI_CMD
 EXTRA_DIST += lib/tss2-tcti-cmd.map \
               lib/tss2-tcti-cmd.def
 
+if ENABLE_TCTI_HELPER_COMMON
+libtss2_tcti_helper_common = src/tss2-tcti/libtss2-tcti-helper-common.la
+noinst_LTLIBRARIES += $(libtss2_tcti_helper_common)
+src_tss2_tcti_libtss2_tcti_helper_common_la_SOURCES = \
+    src/tss2-tcti/tcti-helper-common.c
+endif
+
 # tcti library for spi connected tpms
 if ENABLE_TCTI_SPI_HELPER
 libtss2_tcti_spi_helper = src/tss2-tcti/libtss2-tcti-spi-helper.la
@@ -434,7 +441,7 @@ if !UNIT
 src_tss2_tcti_libtss2_tcti_spi_helper_la_LDFLAGS  = -Wl,--version-script=$(srcdir)/lib/tss2-tcti-spi-helper.map
 endif # UNIT
 endif # HAVE_LD_VERSION_SCRIPT
-src_tss2_tcti_libtss2_tcti_spi_helper_la_LIBADD   = $(libutil) $(libtss2_mu)
+src_tss2_tcti_libtss2_tcti_spi_helper_la_LIBADD   = $(libutil) $(libtss2_mu) $(libtss2_tcti_helper_common)
 src_tss2_tcti_libtss2_tcti_spi_helper_la_SOURCES  = \
     src/tss2-tcti/tcti-common.c \
     src/tss2-tcti/tcti-spi-helper.c \
@@ -521,7 +528,7 @@ if !UNIT
 src_tss2_tcti_libtss2_tcti_i2c_helper_la_LDFLAGS  = -Wl,--version-script=$(srcdir)/lib/tss2-tcti-i2c-helper.map
 endif # UNIT
 endif # HAVE_LD_VERSION_SCRIPT
-src_tss2_tcti_libtss2_tcti_i2c_helper_la_LIBADD   = $(libutil) $(libtss2_mu)
+src_tss2_tcti_libtss2_tcti_i2c_helper_la_LIBADD   = $(libutil) $(libtss2_mu) $(libtss2_tcti_helper_common)
 src_tss2_tcti_libtss2_tcti_i2c_helper_la_SOURCES  = \
     src/tss2-tcti/tcti-common.c \
     src/tss2-tcti/tcti-i2c-helper.c \

diff --git a/configure.ac b/configure.ac
@@ -392,6 +392,9 @@ AM_CONDITIONAL([ENABLE_TCTI_I2C_FTDI], [test "x$enable_tcti_i2c_ftdi" != xno])
 AS_IF([test "x$enable_tcti_i2c_ftdi" = "xyes"],
     AC_DEFINE([TCTI_I2C_FTDI],[1], [TCTI FOR USB BASED ACCESS TO I2C BASED TPM OVER THE FTDI MPSSE USB TO I2C BRIDGE]))
 
+AM_CONDITIONAL([ENABLE_TCTI_HELPER_COMMON],
+               [test "x$enable_tcti_spi_helper" = "xyes" || test "x$enable_tcti_i2c_helper" = "xyes"])
+
 AC_ARG_ENABLE([tcti-fuzzing],
             [AS_HELP_STRING([--enable-tcti-fuzzing],
                             [build the tcti-fuzzing module])],,