Added support for STM32 PKA

Author: danielinux

arch.mk

@@ -96,3 +96,15 @@ ifeq ($(TARGET),kinetis)
   ##  ECC_EXTRA_OBJS+=./lib/wolfssl/wolfcrypt/src/port/nxp/ksdk_port.o $(KINETIS_DRIVERS)/drivers/fsl_ltc.o
   ##endif
 endif
+
+ifeq ($(TARGET),stm32wb)
+  ifneq ($(PKA),0)
+    ECC_EXTRA_OBJS+= $(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pka.o  ./lib/wolfssl/wolfcrypt/src/port/st/stm32.o
+    ECC_EXTRA_CFLAGS+=-DWOLFSSL_STM32_PKA -I$(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Inc \
+        -Isrc -I$(STM32CUBE)/Drivers/BSP/P-NUCLEO-WB55.Nucleo/ -I$(STM32CUBE)/Drivers/CMSIS/Device/ST/STM32WBxx/Include \
+        -I$(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Inc/ \
+        -I$(STM32CUBE)/Drivers/CMSIS/Include \
+		-Ihal \
+	    -DSTM32WB55xx
+  endif
+endif

config/examples/stm32wb-small.config

@@ -2,3 +2,4 @@ TARGET=stm32wb
 SIGN=ECC256
 WOLFBOOT_PARTITION_BOOT_ADDRESS=0xA000
 WOLFBOOT_PARTITION_SIZE=0x4000
+PKA=1

hal/stm32wb.c

@@ -20,7 +20,12 @@
  */
 
 #include <stdint.h>
-#include <image.h>
+#include "image.h"
+#ifdef WOLFSSL_STM32_PKA
+#include "stm32wbxx_hal.h"
+PKA_HandleTypeDef hpka = { };
+#endif
+
 /* STM32 WB register configuration */
 
 /* Assembly helpers */
@@ -286,6 +291,11 @@ static void clock_pll_on(void)
 void hal_init(void)
 {
     clock_pll_on();
+#ifdef WOLFSSL_STM32_PKA
+    __HAL_RCC_PKA_CLK_ENABLE();
+    hpka.Instance = PKA;
+    HAL_PKA_Init(&hpka);
+#endif
 }
 
 void hal_prepare_boot(void)
@@ -297,3 +307,26 @@ void hal_prepare_boot(void)
     clock_pll_off();
 }
 
+#ifdef WOLFSSL_STM32_PKA
+
+
+void HAL_PKA_MspInit(PKA_HandleTypeDef* hpka)
+{
+  if(hpka->Instance==PKA)
+  {
+    /* Peripheral clock enable */
+    __HAL_RCC_PKA_CLK_ENABLE();
+  }
+}
+
+/* This value is unused, the function is never called
+ * as long as the timeout is 0xFFFFFFFF.
+ * It is defined here only to avoid a compiler error
+ * for a missing symbol in hal_pka_driver.
+ */
+uint32_t HAL_GetTick(void)
+{
+    return 0;
+}
+
+#endif

tools/config.mk

@@ -8,6 +8,7 @@ ifeq ($(ARCH),)
   KINETIS_DRIVERS?=$(KINETIS)/devices/MK64F12
   KINETIS_CMSIS?=$(KINETIS)/CMSIS
   FREEDOM_E_SDK?=$(HOME)/src/freedom-e-sdk
+  STM32CUBE?=$(HOME)/src/STM32CubeWB/STM32Cube_FW_WB_V1.2.0
   DEBUG?=0
   VTOR?=1
   CORTEX_M0?=0
@@ -31,7 +32,7 @@ endif
 
 
 CONFIG_VARS:= ARCH TARGET SIGN KINETIS KINETIS_CPU KINETIS_DRIVERS \
-	KINETIS_CMSIS FREEDOM_E_SDK DEBUG VTOR CORTEX_M0 NO_ASM EXT_FLASH \
+	KINETIS_CMSIS FREEDOM_E_SDK STM32CUBE DEBUG VTOR CORTEX_M0 NO_ASM EXT_FLASH \
 	SPI_FLASH ALLOW_DOWNGRADE NVM_FLASH_WRITEONCE WOLFBOOT_VERSION V \
 	SPMATH RAM_CODE DUALBANK_SWAP IMAGE_HEADER_SIZE \
 	WOLFBOOT_PARTITION_SIZE WOLFBOOT_SECTOR_SIZE \