Added cppcheck --enable-portability, fixed UBs

Fixed reported UBs involving (void *) ptr arithmetic

Makefile

@@ -329,7 +329,10 @@ line-count-x86:
 	cloc --force-lang-def cloc_lang_def.txt src/boot_x86_fsp.c src/boot_x86_fsp_payload.c src/boot_x86_fsp_start.S src/image.c src/keystore.c src/libwolfboot.c src/loader.c src/string.c src/update_disk.c src/x86/ahci.c src/x86/ata.c src/x86/common.c src/x86/gpt.c src/x86/hob.c src/pci.c src/x86/tgl_fsp.c hal/x86_fsp_tgl.c hal/x86_uart.c
 
 cppcheck:
-	cppcheck -f --enable=warning --suppress="ctunullpointer" --suppress="nullPointer" --suppress="objectIndex" --suppress="comparePointers" --error-exitcode=89 --std=c89 src/*.c hal/*.c hal/spi/*.c hal/uart/*.c
+	cppcheck -f --enable=warning --enable=portability \
+		--suppress="ctunullpointer" --suppress="nullPointer" \
+		--suppress="objectIndex" --suppress="comparePointers" \
+		--error-exitcode=89 --std=c89 src/*.c hal/*.c hal/spi/*.c hal/uart/*.c
 
 %.o:%.c
 	@echo "\t[CC-$(ARCH)] $@"

hal/nxp_p1021.c

@@ -1238,7 +1238,7 @@ struct qe_firmware {
 static void qe_upload_microcode(const struct qe_firmware *firmware,
     const struct qe_microcode *ucode)
 {
-    const uint32_t *code = (void*)firmware + ucode->code_offset;
+    const uint32_t *code = (uint32_t*)((uint8_t *)firmware + ucode->code_offset);
     unsigned int i;
 
     wolfBoot_printf("QE: uploading '%s' version %u.%u.%u\n",

hal/nxp_t1024.c

@@ -1124,7 +1124,7 @@ struct qe_firmware {
 static void qe_upload_microcode(const struct qe_firmware *firmware,
     const struct qe_microcode *ucode)
 {
-    const uint32_t *code = (void*)firmware + ucode->code_offset;
+    const uint32_t *code = (uint32_t*)((uint8_t *)firmware + ucode->code_offset);
     unsigned int i;
 
     wolfBoot_printf("QE: uploading '%s' version %u.%u.%u\n",

hal/sim.c

@@ -200,7 +200,7 @@ static int find_epc(void *base, struct entry_point_command **entry)
     *entry = NULL;
 
     mh = (struct mach_header_64*)base;
-    lc = (struct load_command*)(base + sizeof(struct mach_header_64));
+    lc = (struct load_command*)((uint8_t *)base + sizeof(struct mach_header_64));
     for (i=0; i<(int)mh->ncmds; i++) {
         if (lc->cmd == LC_MAIN) { /* 0x80000028 */
             *entry = (struct entry_point_command *)lc;
@@ -250,7 +250,7 @@ void do_boot(const uint32_t *app_offset)
     /* restore mh_bundle type to allow hash to remain valid */
     app_buf[3] = typeVal;
 
-    main = (main_entry)(void*)(pSymbolAddress + epc->entryoff);
+    main = (main_entry)((uint8_t*)pSymbolAddress + epc->entryoff);
     main(main_argc, main_argv, NULL, NULL);
 #else
     char *envp[1] = {NULL};

src/qspi_flash.c

@@ -444,7 +444,7 @@ int spi_flash_write(uint32_t address, const void *data, int len)
                 addr, QSPI_ADDR_SZ, QSPI_DATA_MODE_SPI,    /* Address */
                 0, 0, QSPI_DATA_MODE_NONE,                 /* Alternate Bytes */
                 0,                                         /* Dummy */
-                (uint8_t*)(data + (page * FLASH_PAGE_SIZE)),
+                ((uint8_t*)data + (page * FLASH_PAGE_SIZE)),
                 xferSz, QSPI_DATA_MODE                     /* Data */
             );
 #ifdef DEBUG_QSPI

src/update_disk.c

@@ -168,7 +168,7 @@ void RAMFUNCTION wolfBoot_start(void)
         load_off = 0;
         do {
             ret = disk_read(BOOT_DISK, cur_part, load_off, 512,
-                    (void *)load_address + load_off);
+                    (uint8_t *)load_address + load_off);
             if (ret < 0)
                 break;
             load_off += ret;