package/wolftpm: Add config options for TPM 2.0 extra capabilities

Some TPM 2.0 chips offer extra capabilities. This patch adds additional
configuration options to the wolftpm package, so such capabilities can
be available to the user. For example, the STMicroelectronics ST33 and
Nuvoton NPCT750 both offer secure GPIO. Due to chip differences, wolfTPM
requires explicit configuration options to enable the extra capabilities.

Signed-off-by: Dimitar Tomov <dimi@tpm.dev>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/wolftpm/Config.in

@@ -23,6 +23,18 @@ config BR2_PACKAGE_WOLFTPM_WOLFCRYPT
 	  encryption. Disabling this option is not recommended as it
 	  could create a security breach in most environments.
 
+config BR2_PACKAGE_WOLFTPM_ST33
+	bool "ST33 extra functionality"
+	help
+	  Enable support of TPM 2.0 extra functionality offered by the
+	  STMicroelectronics ST33 chip.
+
+config BR2_PACKAGE_WOLFTPM_NUVOTON
+	bool "NPCT750 extra functionality"
+	help
+	  Enable support of TPM 2.0 extra functionality offered by the
+	  Nuvoton NPCT750 chip.
+
 comment "wolfCrypt hooks need a toolchain w/ threads, dynamic library"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
 

package/wolftpm/wolftpm.mk

@@ -35,4 +35,16 @@ else
 WOLFTPM_CONF_OPTS += --disable-wolfcrypt
 endif
 
+ifeq ($(BR2_PACKAGE_WOLFTPM_ST33),y)
+WOLFTPM_CONF_OPTS += --enable-st33
+else
+WOLFTPM_CONF_OPTS += --disable-st33
+endif
+
+ifeq ($(BR2_PACKAGE_WOLFTPM_NPCT750),y)
+WOLFTPM_CONF_OPTS += --enable-nuvoton
+else
+WOLFTPM_CONF_OPTS += --disable-nuvoton
+endif
+
 $(eval $(autotools-package))