Fixes for unused variables. Also repaired STM32WB55 build with PKA

Author: dgarske

Makefile

@@ -104,8 +104,12 @@ CFLAGS+= \
 
 # Setup default optimizations (for GCC)
 ifeq ($(USE_GCC_HEADLESS),1)
-  CFLAGS+=-Wall -Wextra -Wno-main -ffreestanding -Wno-unused -nostartfiles
+  CFLAGS+=-Wall -Wextra -Wno-main -ffreestanding -nostartfiles
   CFLAGS+=-ffunction-sections -fdata-sections -fomit-frame-pointer
+  # Allow unused parameters and functions
+  CFLAGS+=-Wno-unused-parameter -Wno-unused-function
+  # Error on unused variables
+  CFLAGS+=-Wunused-variable
   LDFLAGS+=-Wl,-gc-sections -Wl,-Map=wolfboot.map -ffreestanding -nostartfiles
   # Not setting LDFLAGS directly since it is passed to the test-app
   LSCRIPT_FLAGS+=-T $(LSCRIPT)
@@ -469,7 +473,7 @@ utilsclean: clean
 	$(Q)$(MAKE) -C tools/test-update-server -s clean
 	$(Q)$(MAKE) -C tools/uart-flash-server -s clean
 	$(Q)$(MAKE) -C tools/unit-tests -s clean
-	$(Q)if [ "$(WOLFHSM_CLIENT)" = "1" ]; then $(MAKE) -C lib/wolfHSM/tools/whnvmtool -s clean; fi
+	$(Q)if [ "$(WOLFHSM_CLIENT)" = "1" ]; then $(MAKE) -C $(WOLFBOOT_LIB_WOLFHSM)/tools/whnvmtool -s clean; fi
 	$(Q)$(MAKE) -C tools/keytools/otp -s clean
 	$(Q)$(MAKE) -C tools/squashelf -s clean
 

arch.mk

@@ -106,7 +106,9 @@ ifeq ($(ARCH),AARCH64)
     CFLAGS+=$(ARCH_FLAGS) -DWOLFSSL_ARMASM -DWOLFSSL_ARMASM_INLINE -DWC_HASH_DATA_ALIGNMENT=8 -DWOLFSSL_AARCH64_PRIVILEGE_MODE
     WOLFCRYPT_OBJS += $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/cpuid.o \
                       $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/arm/armv8-sha512-asm_c.o \
-                      $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/arm/armv8-sha3-asm_c.o
+                      $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/arm/armv8-sha3-asm_c.o \
+                      $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/arm/armv8-aes-asm_c.o \
+                      $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/arm/armv8-sha256-asm_c.o
   endif
 endif
 
@@ -190,13 +192,14 @@ ifeq ($(ARCH),ARM)
     ARCH_FLASH_OFFSET=0x08000000
     SPI_TARGET=stm32
     ifneq ($(PKA),0)
-      PKA_EXTRA_OBJS+= $(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pka.o  $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/st/stm32.o
-      PKA_EXTRA_CFLAGS+=-DWOLFSSL_STM32_PKA -I$(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
+      PKA_EXTRA_OBJS+= $(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pka.o $(WOLFBOOT_LIB_WOLFSSL)/wolfcrypt/src/port/st/stm32.o
+      PKA_EXTRA_CFLAGS+=-DWOLFSSL_STM32WB -DWOLFSSL_STM32_PKA -DWOLFSSL_STM32_CUBEMX -DNO_STM32_HASH -DSTM32WB55xx
+      PKA_EXTRA_CFLAGS+=-Isrc -Ihal \
+          -I$(STM32CUBE)/Drivers/STM32WBxx_HAL_Driver/Inc \
+          -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
     endif
   endif
 
@@ -1180,15 +1183,15 @@ ifeq ($(ARCH), AURIX_TC3)
       # Common wolfHSM port files
       CFLAGS += -I$(WOLFHSM_INFINEON_TC3XX)/port -DWOLFHSM_CFG_DMA
       OBJS += $(WOLFHSM_INFINEON_TC3XX)/port/tchsm_common.o \
-	          $(WOLFHSM_INFINEON_TC3XX)/port/tchsm_hsmhost.o
+              $(WOLFHSM_INFINEON_TC3XX)/port/tchsm_hsmhost.o
       # General wolfHSM files
       OBJS += $(WOLFBOOT_LIB_WOLFHSM)/src/wh_transport_mem.o
 
       # NVM image generation variables
       WH_NVM_BIN ?= whNvmImage.bin
       WH_NVM_HEX ?= whNvmImage.hex
       WH_NVM_PART_SIZE ?= 0x8000
-	  # Default to base of HSM DFLASH1
+      # Default to base of HSM DFLASH1
       WH_NVM_BASE_ADDRESS ?= 0xAFC00000
 
       # Select config file based on certificate chain verification
@@ -1225,25 +1228,25 @@ ifeq ($(ARCH), AURIX_TC3)
 
       LSCRIPT_IN=hal/$(TARGET)_hsm.ld
 
-	  # wolfHSM port server-specific files
+      # wolfHSM port server-specific files
       ifeq ($(WOLFHSM_SERVER),1)
         USE_GCC_HEADLESS=0
 
         CFLAGS += -I$(WOLFHSM_INFINEON_TC3XX)/port/server
 
         OBJS += $(WOLFHSM_INFINEON_TC3XX)/port/server/port_halflash_df1.o \
-				$(WOLFHSM_INFINEON_TC3XX)/port/server/io.o \
-				$(WOLFHSM_INFINEON_TC3XX)/port/server/sysmem.o \
-				$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_hh_hsm.o \
-				$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_utils.o
-
-				# SW only for now, as we dont have the right protection macros
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/ccb_hsm.o \
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_hash.o \
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_aes.o \
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_cmac.o \
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_pk.o \
-				#$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_trng.o
+          $(WOLFHSM_INFINEON_TC3XX)/port/server/io.o \
+          $(WOLFHSM_INFINEON_TC3XX)/port/server/sysmem.o \
+          $(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_hh_hsm.o \
+          $(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_utils.o
+
+        # SW only for now, as we dont have the right protection macros
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/ccb_hsm.o \
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_hash.o \
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_aes.o \
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_cmac.o \
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_pk.o \
+        #$(WOLFHSM_INFINEON_TC3XX)/port/server/tchsm_trng.o
       endif
 
       # HSM BSP specific object files

config/examples/stm32l4-cube.config

@@ -15,7 +15,7 @@ SPMATH?=1
 RAM_CODE?=0
 DUALBANK_SWAP?=0
 IMAGE_HEADER_SIZE?=0x200
-STM32CUBE?=$(HOME)/STM32Cube/Repository/STM32Cube_FW_L4_V1.17.0
+STM32CUBE?=$(HOME)/STM32Cube/Repository/STM32Cube_FW_L4_V1.18.1
 WOLFBOOT_SECTOR_SIZE=0x1000
 WOLFBOOT_PARTITION_SIZE=0x7A000
 WOLFBOOT_PARTITION_BOOT_ADDRESS=0x0800A000

config/examples/stm32wb-pka-1mb.config

@@ -8,3 +8,5 @@ WOLFBOOT_PARTITION_UPDATE_ADDRESS=0x08083800
 WOLFBOOT_PARTITION_SWAP_ADDRESS=0x080FF000
 NVM_FLASH_WRITEONCE=1
 PKA=1
+STM32CUBE?=$(HOME)/STM32Cube/Repository/STM32Cube_FW_WB_V1.23.0
+NO_ARM_ASM=1

docs/wolfHSM.md

@@ -144,7 +144,7 @@ make test-sim-internal-flash-with-update
 
 #### wolfHSM Server Mode Build
 
-To build the simulator configured to use embedded wolfHSM server mode, use the `WOLFHSM_SERVER=1` makefile option. In this mode, wolfBoot includes the complete wolfHSM server and no external HSM server is required. Currently the wolfHSM server only supporst the certificate chain verification mode of authentication.
+To build the simulator configured to use embedded wolfHSM server mode, use the `WOLFHSM_SERVER=1` makefile option. In this mode, wolfBoot includes the complete wolfHSM server and no external HSM server is required. Currently the wolfHSM server only supports the certificate chain verification mode of authentication.
 
 ```sh
 # Grab the HSM server simulator configuration (with certificate chain verification)
@@ -228,7 +228,7 @@ When using wolfHSM server mode, no external server is required. wolfBoot include
 # Create a simulated NVM image for the POSIX flash file simulator containing the dummy root CA for cert chain verification.
 # You must build whnvmtool first if you haven't already, and ensure the file name matches the simulated NVM image file
 # name in hal/sim.c
-./lib/wolfHSM/tools/whnvmtool/whnvmtool --image=wolfBoot_wolfHSM_NVM.bin --size 16348 --invert-erased-byte tools/scripts/wolfBoot-wolfHSM-sim-dummy-certchain.nvminit 
+./lib/wolfHSM/tools/whnvmtool/whnvmtool --image=wolfBoot_wolfHSM_NVM.bin --size 16348 --invert-erased-byte tools/scripts/wolfBoot-wolfHSM-sim-dummy-certchain.nvminit
 
 # Run the wolfBoot simulator with embedded wolfHSM server to stage an update
 ./wolfboot.elf update_trigger get_version

hal/lpc.c

@@ -26,7 +26,6 @@
 #include "fsl_flashiap.h"
 #include "fsl_power.h"
 
-static int flash_init = 0;
 uint32_t SystemCoreClock;
 
 #ifdef NVM_FLASH_WRITEONCE

hal/mcxa.c

@@ -36,7 +36,6 @@
 #define BOARD_BOOTCLOCKFRO96M_CORE_CLOCK 96000000UL
 
 static flash_config_t pflash;
-static int flash_init = 0;
 
 uint32_t SystemCoreClock;
 

hal/nrf5340.c

@@ -487,7 +487,6 @@ static uint32_t hal_shm_status_wait(ShmInfo_t* info, uint32_t status,
     uint32_t timeout_ms)
 {
     uint32_t status_ret = SHARED_STATUS_UNKNOWN;
-    int ret = 0;
 
     do {
         /* see if status shared already */
@@ -566,7 +565,7 @@ static void hal_net_check_version(void)
 {
     int ret;
     struct wolfBoot_image img;
-    uint32_t timeout, status = 0;
+    uint32_t status = 0;
 
 #ifdef TARGET_nrf5340_app
     /* check the network core version */
@@ -682,7 +681,7 @@ static void hal_net_check_version(void)
     }
     /* proceed to update_flash routines */
 #endif /* TARGET_nrf5340_* */
-exit:
+    (void)status;
     wolfBoot_printf("Status: App %s (ver %d), Net %s (ver %d)\n",
         hal_shm_status_string(shm->core.app.status), shm->core.app.version,
         hal_shm_status_string(shm->core.net.status), shm->core.net.version);

hal/nxp_ls1028a.c

@@ -537,7 +537,6 @@ void xspi_flash_write(uintptr_t address, const uint8_t *data, uint32_t len)
 {
     uint32_t size = 0;
     uint32_t tx_data = 0;
-    uint32_t size_wm = 0;
     uint32_t loop_cnt = 0;
     uint32_t remaining, rem_size = 0;
     uint32_t i = 0, j = 0;
@@ -839,8 +838,6 @@ void hal_init(void)
 {
     volatile uint32_t counter=0xFFFFul; /* used for delay */
 #ifdef DEBUG_UART
-    uint32_t fw;
-
     uart_init();
     wolfBoot_printf("wolfBoot Init\n");
 #endif

hal/nxp_p1021.c

@@ -1164,10 +1164,7 @@ static void config_io_pin(uint8_t port, uint8_t pin, int dir, int open_drain,
 
 static void read_io_pin(uint8_t port, uint8_t pin, int *data)
 {
-    uint32_t pin_1bit_mask, tmp_val;
-
-    /* Calculate pin location for 1bit mask */
-    pin_1bit_mask = (uint32_t)(1 << (NUM_OF_PINS - (pin + 1)));
+    uint32_t tmp_val;
 
     /* Read the data */
     tmp_val = get32(GUTS_CPDAT(port));
@@ -1299,7 +1296,9 @@ static void qe_upload_microcode(const struct qe_firmware *firmware,
 static int qe_upload_firmware(const struct qe_firmware *firmware)
 {
     unsigned int i, j;
+#ifdef ENABLE_QE_CRC32
     uint32_t crc;
+#endif
     size_t calc_size = sizeof(struct qe_firmware);
     size_t length;
     const struct qe_header *hdr;
@@ -1567,6 +1566,7 @@ static void hal_irq_init(void)
 
     set32(PIC_GCR, PIC_GCR_M); /* eanble mixed-mode */
     reg = get32(PIC_GCR); /* read back */
+    (void)reg;
 }
 #endif
 
@@ -1685,6 +1685,7 @@ int ext_flash_write(uintptr_t address, const uint8_t *data, int len)
                     ELBC_FIR_OP(4, ELBC_FIR_OP_WB) |
                     ELBC_FIR_OP(5, ELBC_FIR_OP_CW1));
 #endif
+    (void)block_size; /* not used - shown for reference */
 
     /* page write loop */
     while (pos < len) {
@@ -1717,6 +1718,7 @@ int ext_flash_write(uintptr_t address, const uint8_t *data, int len)
         wolfBoot_printf("write page %d, col %d, status %x\n",
             page, col, status);
 #endif
+        (void)status;
         address += page_size - col;
         pos += page_size - col;
         data += page_size - col;
@@ -1857,6 +1859,7 @@ int ext_flash_erase(uintptr_t address, int len)
 #ifdef DEBUG_EXT_FLASH
         wolfBoot_printf("erase page %d, status %x\n", page, status);
 #endif
+        (void)status;
         len -= block_size;
     }