libstb: move drivers/sha512.* to mbedtls directory

The drivers/sha512.c file is a SHA512 hash implementation imported from
the mbed TLS project.

As a matter of semantics, this moves drivers/sha512.* to the mbedtls
directory.

Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

libstb/Makefile.inc

@@ -8,10 +8,11 @@ LIBSTB_SRCS = container.c rom.c tpm_chip.c stb.c
 LIBSTB_OBJS = $(LIBSTB_SRCS:%.c=%.o)
 LIBSTB = $(LIBSTB_DIR)/built-in.o
 
+include $(SRC)/$(LIBSTB_DIR)/mbedtls/Makefile.inc
 include $(SRC)/$(LIBSTB_DIR)/drivers/Makefile.inc
 include $(SRC)/$(LIBSTB_DIR)/tss/Makefile.inc
 
-$(LIBSTB): $(LIBSTB_OBJS:%=$(LIBSTB_DIR)/%) $(DRIVERS) $(TSS)
+$(LIBSTB): $(LIBSTB_OBJS:%=$(LIBSTB_DIR)/%) $(DRIVERS) $(TSS) $(MBEDTLS)
 
 libstb/create-container: libstb/create-container.c
 	$(call Q, HOSTCC ,$(HOSTCC) $(HOSTCFLAGS) \

libstb/drivers/Makefile.inc

@@ -4,7 +4,7 @@ DRIVERS_DIR = libstb/drivers
 
 SUBDIRS += $(DRIVERS_DIR)
 
-DRIVERS_SRCS = romcode.c tpm_i2c_interface.c tpm_i2c_nuvoton.c sw_driver.c sha512.c
+DRIVERS_SRCS = romcode.c tpm_i2c_interface.c tpm_i2c_nuvoton.c sw_driver.c
 DRIVERS_OBJS = $(DRIVERS_SRCS:%.c=%.o)
 DRIVERS = $(DRIVERS_DIR)/built-in.o
 

libstb/drivers/sw_driver.c

@@ -17,8 +17,8 @@
 #include <chip.h>
 #include <string.h>
 #include <skiboot.h>
+#include <libstb/mbedtls/sha512.h>
 #include "../rom.h"
-#include "sha512.h"
 #include "sw_driver.h"
 
 static sha2_hash_t *hw_key_hash = NULL;

libstb/mbedtls/Makefile.inc

@@ -0,0 +1,11 @@
+# -*-Makefile-*-
+
+MBEDTLS_DIR = libstb/mbedtls
+
+SUBDIRS += $(MBEDTLS_DIR)
+
+MBEDTLS_SRCS = sha512.c
+MBEDTLS_OBJS = $(MBEDTLS_SRCS:%.c=%.o)
+MBEDTLS = $(MBEDTLS_DIR)/built-in.o
+
+$(MBEDTLS): $(MBEDTLS_OBJS:%=$(MBEDTLS_DIR)/%)