diff --git a/docs/firmware-design.md b/docs/firmware-design.md
index 5b6923a..7ae1de3 100644
--- a/docs/firmware-design.md
+++ b/docs/firmware-design.md
@@ -8,7 +8,7 @@
 3.  [EL3 runtime services framework](#3--el3-runtime-services-framework)
 4.  [Power State Coordination Interface](#4--power-state-coordination-interface)
 5.  [Secure-EL1 Payloads and Dispatchers](#5--secure-el1-payloads-and-dispatchers)
-6.  [Crash Reporting in BL31](#6--crash-reporting-in-bl3-1)
+6.  [Crash Reporting in BL31](#6--crash-reporting-in-bl31)
 7.  [Guidelines for Reset Handlers](#7--guidelines-for-reset-handlers)
 8.  [CPU specific operations framework](#8--cpu-specific-operations-framework)
 9.  [Memory layout of BL images](#9-memory-layout-of-bl-images)
@@ -988,11 +988,11 @@
 `reset_func()`, `core_pwr_dwn()`, `cluster_pwr_dwn()` and `cpu_reg_dump()`.
 
 The CPU specific files in `lib/cpus` export a `cpu_ops` data structure with
-suitable handlers for that CPU.  For example, `lib/cpus/cortex_a53.S` exports
-the `cpu_ops` for Cortex-A53 CPU. According to the platform configuration,
-these CPU specific files must must be included in the build by the platform
-makefile. The generic CPU specific operations framework code exists in
-`lib/cpus/aarch64/cpu_helpers.S`.
+suitable handlers for that CPU.  For example, `lib/cpus/aarch64/cortex_a53.S`
+exports the `cpu_ops` for Cortex-A53 CPU. According to the platform
+configuration, these CPU specific files must be included in the build by
+the platform makefile. The generic CPU specific operations framework code exists
+in `lib/cpus/aarch64/cpu_helpers.S`.
 
 ### CPU specific Reset Handling
 
@@ -1020,12 +1020,12 @@
 retrieved during power down sequences.
 
 The PSCI service, upon receiving a power down request, determines the highest
-affinity level at which to execute power down sequence for a particular CPU and
+power level at which to execute power down sequence for a particular CPU and
 invokes the corresponding 'prepare' power down handler in the CPU specific
-operations framework. For example, when a CPU executes a power down for affinity
+operations framework. For example, when a CPU executes a power down for power
 level 0, the `prepare_core_pwr_dwn()` retrieves the `cpu_ops` pointer from the
 per-CPU data and the corresponding `core_pwr_dwn()` is invoked. Similarly when
-a CPU executes power down at affinity level 1, the `prepare_cluster_pwr_dwn()`
+a CPU executes power down at power level 1, the `prepare_cluster_pwr_dwn()`
 retrieves the `cpu_ops` pointer and the corresponding `cluster_pwr_dwn()` is
 invoked.
 
@@ -1454,8 +1454,8 @@
 images. The platform policy can be modified to allow additional images.
 
 
-11. Use of coherent memory in Trusted Firmware
-----------------------------------------------
+11.  Use of coherent memory in Trusted Firmware
+-----------------------------------------------
 
 There might be loss of coherency when physical memory with mismatched
 shareability, cacheability and memory attributes is accessed by multiple CPUs
@@ -1739,5 +1739,5 @@
 [Porting Guide]:    ./porting-guide.md
 [Reset Design]:     ./reset-design.md
 [INTRG]:            ./interrupt-framework-design.md
-[CPUBM]:            ./cpu-specific-build-macros.md.md
+[CPUBM]:            ./cpu-specific-build-macros.md
 [Firmware Update]:  ./firmware-update.md
diff --git a/docs/firmware-update.md b/docs/firmware-update.md
index 419ac85..97df8cf 100644
--- a/docs/firmware-update.md
+++ b/docs/firmware-update.md
@@ -3,11 +3,11 @@
 
 Contents :
 
-1.  [Introduction](#1-introduction)
-2.  [FWU Overview](#2-fwu-overview)
-3.  [Image Identification](#3-image-identification)
-4.  [FWU State Machine](#4-fwu-state-machine)
-5.  [SMC Interface](#5-smc-interface)
+1.  [Introduction](#1--introduction)
+2.  [FWU Overview](#2--fwu-overview)
+3.  [Image Identification](#3--image-identification)
+4.  [FWU State Machine](#4--fwu-state-machine)
+5.  [BL1 SMC Interface](#5--bl1-smc-interface)
 
 - - - - - - - - - - - - - - - - - -
 
@@ -35,8 +35,8 @@
 the TBBR.
 
 
-2. FWU Overview
----------------
+2.  FWU Overview
+----------------
 
 The FWU boot flow is primarily mediated by BL1. Since BL1 executes in ROM, and
 it is usually desirable to minimize the amount of ROM code, the design allows
@@ -73,8 +73,8 @@
 ![Flow Diagram](diagrams/fwu_flow.png?raw=true)
 
 
-3. Image Identification
------------------------
+3.  Image Identification
+------------------------
 
 Each FWU image and certificate is identified by a unique ID, defined by the
 platform, which BL1 uses to fetch an image descriptor (`image_desc_t`) via a
@@ -135,7 +135,7 @@
 
 
 5.  BL1 SMC Interface
------------------
+---------------------
 
 ### BL1_SMC_CALL_COUNT
 
diff --git a/docs/interrupt-framework-design.md b/docs/interrupt-framework-design.md
index 060bbf2..e50d175 100644
--- a/docs/interrupt-framework-design.md
+++ b/docs/interrupt-framework-design.md
@@ -10,7 +10,7 @@
         -   [Valid Routing Models](#113-valid-routing-models)
             +   [Secure-EL1 Interrupts](#1131-secure-el1-interrupts)
             +   [Non-secure Interrupts](#1132-non-secure-interrupts)
-            +   [EL3 interrupts](#1133-el3_interrupts)
+            +   [EL3 interrupts](#1133-el3-interrupts)
         -   [Mapping of Interrupt Type to Signal](#114-mapping-of-interrupt-type-to-signal)
             +   [Effect of mapping of several interrupt types to one signal](#1141-effect-of-mapping-of-several-interrupt-types-to-one-signal)
         -   [Assumptions in Interrupt Management Framework](#12-assumptions-in-interrupt-management-framework)
diff --git a/docs/porting-guide.md b/docs/porting-guide.md
index 4047d62..cdb722a 100644
--- a/docs/porting-guide.md
+++ b/docs/porting-guide.md
@@ -413,6 +413,22 @@
     used, choose the smallest value needed to map the required virtual addresses
     for each BL stage.
 
+*   **#define : MAX_MMAP_REGIONS**
+
+    Defines the maximum number of regions that are allocated by the translation
+    table library code. A region consists of physical base address, virtual base
+    address, size and attributes (Device/Memory, RO/RW, Secure/Non-Secure), as
+    defined in the `mmap_region_t` structure. The platform defines the regions
+    that should be mapped. Then, the translation table library will create the
+    corresponding tables and descriptors at runtime. To minimize the amount of
+    runtime memory used, choose the smallest value needed to register the
+    required regions for each BL stage.
+
+*   **#define : ADDR_SPACE_SIZE**
+
+    Defines the total size of the address space in bytes. For example, for a 32
+    bit address space, this value should be `(1ull << 32)`.
+
 If the platform port uses the IO storage framework, the following constants
 must also be defined:
 
diff --git a/include/bl31/runtime_svc.h b/include/bl31/runtime_svc.h
index 30ba29f..87f2dd2 100644
--- a/include/bl31/runtime_svc.h
+++ b/include/bl31/runtime_svc.h
@@ -89,12 +89,12 @@
 #define DECLARE_RT_SVC(_name, _start, _end, _type, _setup, _smch) \
 	static const rt_svc_desc_t __svc_desc_ ## _name \
 		__attribute__ ((section("rt_svc_descs"), used)) = { \
-			_start, \
-			_end, \
-			_type, \
-			#_name, \
-			_setup, \
-			_smch }
+			.start_oen = _start, \
+			.end_oen = _end, \
+			.call_type = _type, \
+			.name = #_name, \
+			.init = _setup, \
+			.handle = _smch }
 
 /*
  * Compile time assertions related to the 'rt_svc_desc' structure to:
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 0ec7a8d..e5e6717 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -202,8 +202,9 @@
  * switching exception levels. The only two mechanisms to do so are
  * ERET & SMC. Security state is indicated using bit zero of header
  * attribute
- * NOTE: BL1 expects entrypoint followed by spsr while processing
- * SMC to jump to BL31 from the start of entry_point_info
+ * NOTE: BL1 expects entrypoint followed by spsr at an offset from the start
+ * of this structure defined by the macro `ENTRY_POINT_INFO_PC_OFFSET` while
+ * processing SMC to jump to BL31.
  *****************************************************************************/
 typedef struct entry_point_info {
 	param_header_t h;
@@ -232,13 +233,13 @@
 typedef struct image_desc {
 	/* Contains unique image id for the image. */
 	unsigned int image_id;
-	image_info_t image_info;
-	entry_point_info_t ep_info;
 	/*
 	 * This member contains Image state information.
 	 * Refer IMAGE_STATE_XXX defined above.
 	 */
 	unsigned int state;
+	image_info_t image_info;
+	entry_point_info_t ep_info;
 } image_desc_t;
 
 /*******************************************************************************
diff --git a/include/drivers/auth/auth_mod.h b/include/drivers/auth/auth_mod.h
index c00b256..4ed4684 100644
--- a/include/drivers/auth/auth_mod.h
+++ b/include/drivers/auth/auth_mod.h
@@ -48,8 +48,8 @@
  */
 typedef struct auth_img_desc_s {
 	unsigned int img_id;
-	const struct auth_img_desc_s *parent;
 	img_type_t img_type;
+	const struct auth_img_desc_s *parent;
 	auth_method_desc_t img_auth_methods[AUTH_METHOD_NUM];
 	auth_param_desc_t authenticated_data[COT_MAX_VERIFIED_PARAMS];
 } auth_img_desc_t;
diff --git a/tools/cert_create/include/cert.h b/tools/cert_create/include/cert.h
index 8ef9f27..6b1ae95 100644
--- a/tools/cert_create/include/cert.h
+++ b/tools/cert_create/include/cert.h
@@ -57,6 +57,7 @@
 	const char *opt;	/* Command line option to pass filename */
 	const char *fn;		/* Filename to save the certificate */
 	const char *cn;		/* Subject CN (Company Name) */
+	const char *help_msg;	/* Help message */
 
 	/* These fields must be defined statically */
 	int key;		/* Key to be signed */
diff --git a/tools/cert_create/include/cmd_opt.h b/tools/cert_create/include/cmd_opt.h
index ca48d7c..389aa23 100644
--- a/tools/cert_create/include/cmd_opt.h
+++ b/tools/cert_create/include/cmd_opt.h
@@ -42,9 +42,16 @@
 	CMD_OPT_EXT
 };
 
+/* Structure to define a command line option */
+typedef struct cmd_opt_s {
+	struct option long_opt;
+	const char *help_msg;
+} cmd_opt_t;
+
 /* Exported API*/
-int cmd_opt_add(const char *name, int has_arg, int val);
+void cmd_opt_add(const cmd_opt_t *cmd_opt);
 const struct option *cmd_opt_get_array(void);
 const char *cmd_opt_get_name(int idx);
+const char *cmd_opt_get_help_msg(int idx);
 
 #endif /* CMD_OPT_H_ */
diff --git a/tools/cert_create/include/ext.h b/tools/cert_create/include/ext.h
index 798bd1b..82a4bcb 100644
--- a/tools/cert_create/include/ext.h
+++ b/tools/cert_create/include/ext.h
@@ -50,6 +50,7 @@
 	const char *oid;	/* OID of the extension */
 	const char *sn;		/* Short name */
 	const char *ln;		/* Long description */
+	const char *help_msg;	/* Help message */
 	int asn1_type;		/* OpenSSL ASN1 type of the extension data.
 				 * Supported types are:
 				 *   - V_ASN1_INTEGER
diff --git a/tools/cert_create/include/key.h b/tools/cert_create/include/key.h
index bd45f13..f60997f 100644
--- a/tools/cert_create/include/key.h
+++ b/tools/cert_create/include/key.h
@@ -64,6 +64,7 @@
 typedef struct key_s {
 	int id;			/* Key id */
 	const char *opt;	/* Command line option to specify a key */
+	const char *help_msg;	/* Help message */
 	const char *desc;	/* Key description (debug purposes) */
 	char *fn;		/* Filename to load/store the key */
 	EVP_PKEY *key;		/* Key container */
diff --git a/tools/cert_create/src/cert.c b/tools/cert_create/src/cert.c
index bf52645..a559832 100644
--- a/tools/cert_create/src/cert.c
+++ b/tools/cert_create/src/cert.c
@@ -183,19 +183,21 @@
 
 int cert_init(void)
 {
+	cmd_opt_t cmd_opt;
 	cert_t *cert;
-	int rc = 0;
 	unsigned int i;
 
 	for (i = 0; i < num_certs; i++) {
 		cert = &certs[i];
-		rc = cmd_opt_add(cert->opt, required_argument, CMD_OPT_CERT);
-		if (rc != 0) {
-			break;
-		}
+		cmd_opt.long_opt.name = cert->opt;
+		cmd_opt.long_opt.has_arg = required_argument;
+		cmd_opt.long_opt.flag = NULL;
+		cmd_opt.long_opt.val = CMD_OPT_CERT;
+		cmd_opt.help_msg = cert->help_msg;
+		cmd_opt_add(&cmd_opt);
 	}
 
-	return rc;
+	return 0;
 }
 
 cert_t *cert_get_by_opt(const char *opt)
diff --git a/tools/cert_create/src/cmd_opt.c b/tools/cert_create/src/cmd_opt.c
index 3847b98..ecf84ab 100644
--- a/tools/cert_create/src/cmd_opt.c
+++ b/tools/cert_create/src/cmd_opt.c
@@ -28,26 +28,35 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <assert.h>
 #include <getopt.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <cmd_opt.h>
+#include "debug.h"
 
 /* Command line options */
 static struct option long_opt[CMD_OPT_MAX_NUM+1];
+static const char *help_msg[CMD_OPT_MAX_NUM+1];
 static int num_reg_opt;
 
-int cmd_opt_add(const char *name, int has_arg, int val)
+void cmd_opt_add(const cmd_opt_t *cmd_opt)
 {
+	assert(cmd_opt != NULL);
+
 	if (num_reg_opt >= CMD_OPT_MAX_NUM) {
-		return -1;
+		ERROR("Out of memory. Please increase CMD_OPT_MAX_NUM\n");
+		exit(1);
 	}
-	long_opt[num_reg_opt].name = name;
-	long_opt[num_reg_opt].has_arg = has_arg;
+
+	long_opt[num_reg_opt].name = cmd_opt->long_opt.name;
+	long_opt[num_reg_opt].has_arg = cmd_opt->long_opt.has_arg;
 	long_opt[num_reg_opt].flag = 0;
-	long_opt[num_reg_opt].val = val;
-	num_reg_opt++;
+	long_opt[num_reg_opt].val = cmd_opt->long_opt.val;
 
-	return 0;
+	help_msg[num_reg_opt] = cmd_opt->help_msg;
+
+	num_reg_opt++;
 }
 
 const struct option *cmd_opt_get_array(void)
@@ -63,3 +72,12 @@
 
 	return long_opt[idx].name;
 }
+
+const char *cmd_opt_get_help_msg(int idx)
+{
+	if (idx >= num_reg_opt) {
+		return NULL;
+	}
+
+	return help_msg[idx];
+}
diff --git a/tools/cert_create/src/ext.c b/tools/cert_create/src/ext.c
index 14aef66..3f56edb 100644
--- a/tools/cert_create/src/ext.c
+++ b/tools/cert_create/src/ext.c
@@ -69,6 +69,7 @@
  */
 int ext_init(void)
 {
+	cmd_opt_t cmd_opt;
 	ext_t *ext;
 	X509V3_EXT_METHOD *m;
 	int nid, ret;
@@ -78,10 +79,12 @@
 		ext = &extensions[i];
 		/* Register command line option */
 		if (ext->opt) {
-			if (cmd_opt_add(ext->opt, required_argument,
-					CMD_OPT_EXT)) {
-				return 1;
-			}
+			cmd_opt.long_opt.name = ext->opt;
+			cmd_opt.long_opt.has_arg = required_argument;
+			cmd_opt.long_opt.flag = NULL;
+			cmd_opt.long_opt.val = CMD_OPT_EXT;
+			cmd_opt.help_msg = ext->help_msg;
+			cmd_opt_add(&cmd_opt);
 		}
 		/* Register the extension OID in OpenSSL */
 		if (ext->oid == NULL) {
diff --git a/tools/cert_create/src/key.c b/tools/cert_create/src/key.c
index 76d528b..a7ee759 100644
--- a/tools/cert_create/src/key.c
+++ b/tools/cert_create/src/key.c
@@ -194,6 +194,7 @@
 
 int key_init(void)
 {
+	cmd_opt_t cmd_opt;
 	key_t *key;
 	int rc = 0;
 	unsigned int i;
@@ -201,11 +202,12 @@
 	for (i = 0; i < num_keys; i++) {
 		key = &keys[i];
 		if (key->opt != NULL) {
-			rc = cmd_opt_add(key->opt, required_argument,
-					 CMD_OPT_KEY);
-			if (rc != 0) {
-				break;
-			}
+			cmd_opt.long_opt.name = key->opt;
+			cmd_opt.long_opt.has_arg = required_argument;
+			cmd_opt.long_opt.flag = NULL;
+			cmd_opt.long_opt.val = CMD_OPT_KEY;
+			cmd_opt.help_msg = key->help_msg;
+			cmd_opt_add(&cmd_opt);
 		}
 	}
 
diff --git a/tools/cert_create/src/main.c b/tools/cert_create/src/main.c
index 3e4f8c5..3d2b4ba 100644
--- a/tools/cert_create/src/main.c
+++ b/tools/cert_create/src/main.c
@@ -28,6 +28,8 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <assert.h>
+#include <ctype.h>
 #include <getopt.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -81,36 +83,7 @@
 #define VAL_DAYS			7300
 #define ID_TO_BIT_MASK(id)		(1 << id)
 #define NUM_ELEM(x)			((sizeof(x)) / (sizeof(x[0])))
-
-/* Files */
-enum {
-	/* Image file names (inputs) */
-	BL2_ID = 0,
-	SCP_BL2_ID,
-	BL31_ID,
-	BL32_ID,
-	BL33_ID,
-	/* Certificate file names (outputs) */
-	TRUSTED_BOOT_FW_CERT_ID,
-	TRUSTED_KEY_CERT_ID,
-	SCP_FW_KEY_CERT_ID,
-	SCP_FW_CONTENT_CERT_ID,
-	SOC_FW_KEY_CERT_ID,
-	SOC_FW_CONTENT_CERT_ID,
-	TRUSTED_OS_FW_KEY_CERT_ID,
-	TRUSTED_OS_FW_CONTENT_CERT_ID,
-	NON_TRUSTED_FW_KEY_CERT_ID,
-	NON_TRUSTED_FW_CONTENT_CERT_ID,
-	/* Key file names (input/output) */
-	ROT_KEY_ID,
-	TRUSTED_WORLD_KEY_ID,
-	NON_TRUSTED_WORLD_KEY_ID,
-	SCP_BL2_KEY_ID,
-	BL31_KEY_ID,
-	BL32_KEY_ID,
-	BL33_KEY_ID,
-	NUM_OPTS
-};
+#define HELP_OPT_MAX_LEN		128
 
 /* Global options */
 static int key_alg;
@@ -142,7 +115,14 @@
 
 static void print_help(const char *cmd, const struct option *long_opt)
 {
-	int i = 0;
+	int rem, i = 0;
+	const struct option *opt;
+	char line[HELP_OPT_MAX_LEN];
+	char *p;
+
+	assert(cmd != NULL);
+	assert(long_opt != NULL);
+
 	printf("\n\n");
 	printf("The certificate generation tool loads the binary images and\n"
 	       "optionally the RSA keys, and outputs the key and content\n"
@@ -150,18 +130,28 @@
 	       "If keys are provided, they must be in PEM format.\n"
 	       "Certificates are generated in DER format.\n");
 	printf("\n");
-	printf("Usage:\n\n");
-	printf("    %s [-hknp] \\\n", cmd);
-	for (i = 0; i < NUM_OPTS; i++) {
-		printf("        --%s <file>  \\\n", long_opt[i].name);
+	printf("Usage:\n");
+	printf("\t%s [OPTIONS]\n\n", cmd);
+
+	printf("Available options:\n");
+	i = 0;
+	opt = long_opt;
+	while (opt->name) {
+		p = line;
+		rem = HELP_OPT_MAX_LEN;
+		if (isalpha(opt->val)) {
+			/* Short format */
+			sprintf(p, "-%c,", (char)opt->val);
+			p += 3;
+			rem -= 3;
+		}
+		snprintf(p, rem, "--%s %s", opt->name,
+			 (opt->has_arg == required_argument) ? "<arg>" : "");
+		printf("\t%-32s %s\n", line, cmd_opt_get_help_msg(i));
+		opt++;
+		i++;
 	}
 	printf("\n");
-	printf("-a    Key algorithm: rsa (default), ecdsa\n");
-	printf("-h    Print help and exit\n");
-	printf("-k    Save key pairs into files. Filenames must be provided\n");
-	printf("-n    Generate new key pairs if no key files are provided\n");
-	printf("-p    Print the certificates in the standard output\n");
-	printf("\n");
 
 	exit(0);
 }
@@ -237,6 +227,30 @@
 	}
 }
 
+/* Common command line options */
+static const cmd_opt_t common_cmd_opt[] = {
+	{
+		{ "help", no_argument, NULL, 'h' },
+		"Print this message and exit"
+	},
+	{
+		{ "key-alg", required_argument, NULL, 'a' },
+		"Key algorithm: 'rsa' (default), 'ecdsa'"
+	},
+	{
+		{ "save-keys", no_argument, NULL, 'k' },
+		"Save key pairs into files. Filenames must be provided"
+	},
+	{
+		{ "new-keys", no_argument, NULL, 'n' },
+		"Generate new key pairs if no key files are provided"
+	},
+	{
+		{ "print-cert", no_argument, NULL, 'p' },
+		"Print the certificates in the standard output"
+	}
+};
+
 int main(int argc, char *argv[])
 {
 	STACK_OF(X509_EXTENSION) * sk = NULL;
@@ -260,11 +274,9 @@
 	key_alg = KEY_ALG_RSA;
 
 	/* Add common command line options */
-	cmd_opt_add("key-alg", required_argument, 'a');
-	cmd_opt_add("help", no_argument, 'h');
-	cmd_opt_add("save-keys", no_argument, 'k');
-	cmd_opt_add("new-chain", no_argument, 'n');
-	cmd_opt_add("print-cert", no_argument, 'p');
+	for (i = 0; i < NUM_ELEM(common_cmd_opt); i++) {
+		cmd_opt_add(&common_cmd_opt[i]);
+	}
 
 	/* Initialize the certificates */
 	if (cert_init() != 0) {
@@ -289,7 +301,7 @@
 
 	while (1) {
 		/* getopt_long stores the option index here. */
-		c = getopt_long(argc, argv, "ahknp", cmd_opt, &opt_idx);
+		c = getopt_long(argc, argv, "a:hknp", cmd_opt, &opt_idx);
 
 		/* Detect the end of the options. */
 		if (c == -1) {
@@ -333,7 +345,7 @@
 			break;
 		case '?':
 		default:
-			printf("%s\n", optarg);
+			print_help(argv[0], cmd_opt);
 			exit(1);
 		}
 	}
diff --git a/tools/cert_create/src/tbbr/tbb_cert.c b/tools/cert_create/src/tbbr/tbb_cert.c
index 20be59f..7a50ab3 100644
--- a/tools/cert_create/src/tbbr/tbb_cert.c
+++ b/tools/cert_create/src/tbbr/tbb_cert.c
@@ -43,6 +43,7 @@
 	[TRUSTED_BOOT_FW_CERT] = {
 		.id = TRUSTED_BOOT_FW_CERT,
 		.opt = "tb-fw-cert",
+		.help_msg = "Trusted Boot FW Certificate (output file)",
 		.fn = NULL,
 		.cn = "Trusted Boot FW Certificate",
 		.key = ROT_KEY,
@@ -55,6 +56,7 @@
 	[TRUSTED_KEY_CERT] = {
 		.id = TRUSTED_KEY_CERT,
 		.opt = "trusted-key-cert",
+		.help_msg = "Trusted Key Certificate (output file)",
 		.fn = NULL,
 		.cn = "Trusted Key Certificate",
 		.key = ROT_KEY,
@@ -68,6 +70,7 @@
 	[SCP_FW_KEY_CERT] = {
 		.id = SCP_FW_KEY_CERT,
 		.opt = "scp-fw-key-cert",
+		.help_msg = "SCP Firmware Key Certificate (output file)",
 		.fn = NULL,
 		.cn = "SCP Firmware Key Certificate",
 		.key = TRUSTED_WORLD_KEY,
@@ -80,6 +83,7 @@
 	[SCP_FW_CONTENT_CERT] = {
 		.id = SCP_FW_CONTENT_CERT,
 		.opt = "scp-fw-cert",
+		.help_msg = "SCP Firmware Content Certificate (output file)",
 		.fn = NULL,
 		.cn = "SCP Firmware Content Certificate",
 		.key = SCP_FW_CONTENT_CERT_KEY,
@@ -92,6 +96,7 @@
 	[SOC_FW_KEY_CERT] = {
 		.id = SOC_FW_KEY_CERT,
 		.opt = "soc-fw-key-cert",
+		.help_msg = "SoC Firmware Key Certificate (output file)",
 		.fn = NULL,
 		.cn = "SoC Firmware Key Certificate",
 		.key = TRUSTED_WORLD_KEY,
@@ -104,6 +109,7 @@
 	[SOC_FW_CONTENT_CERT] = {
 		.id = SOC_FW_CONTENT_CERT,
 		.opt = "soc-fw-cert",
+		.help_msg = "SoC Firmware Content Certificate (output file)",
 		.fn = NULL,
 		.cn = "SoC Firmware Content Certificate",
 		.key = SOC_FW_CONTENT_CERT_KEY,
@@ -116,6 +122,7 @@
 	[TRUSTED_OS_FW_KEY_CERT] = {
 		.id = TRUSTED_OS_FW_KEY_CERT,
 		.opt = "tos-fw-key-cert",
+		.help_msg = "Trusted OS Firmware Key Certificate (output file)",
 		.fn = NULL,
 		.cn = "Trusted OS Firmware Key Certificate",
 		.key = TRUSTED_WORLD_KEY,
@@ -128,6 +135,7 @@
 	[TRUSTED_OS_FW_CONTENT_CERT] = {
 		.id = TRUSTED_OS_FW_CONTENT_CERT,
 		.opt = "tos-fw-cert",
+		.help_msg = "Trusted OS Firmware Content Certificate (output file)",
 		.fn = NULL,
 		.cn = "Trusted OS Firmware Content Certificate",
 		.key = TRUSTED_OS_FW_CONTENT_CERT_KEY,
@@ -140,6 +148,7 @@
 	[NON_TRUSTED_FW_KEY_CERT] = {
 		.id = NON_TRUSTED_FW_KEY_CERT,
 		.opt = "nt-fw-key-cert",
+		.help_msg = "Non-Trusted Firmware Key Certificate (output file)",
 		.fn = NULL,
 		.cn = "Non-Trusted Firmware Key Certificate",
 		.key = NON_TRUSTED_WORLD_KEY,
@@ -152,6 +161,7 @@
 	[NON_TRUSTED_FW_CONTENT_CERT] = {
 		.id = NON_TRUSTED_FW_CONTENT_CERT,
 		.opt = "nt-fw-cert",
+		.help_msg = "Non-Trusted Firmware Content Certificate (output file)",
 		.fn = NULL,
 		.cn = "Non-Trusted Firmware Content Certificate",
 		.key = NON_TRUSTED_FW_CONTENT_CERT_KEY,
@@ -164,8 +174,9 @@
 	[FWU_CERT] = {
 		.id = FWU_CERT,
 		.opt = "fwu-cert",
+		.help_msg = "Firmware Update Certificate (output file)",
 		.fn = NULL,
-		.cn = "FWU Certificate",
+		.cn = "Firmware Update Certificate",
 		.key = ROT_KEY,
 		.issuer = FWU_CERT,
 		.ext = {
diff --git a/tools/cert_create/src/tbbr/tbb_ext.c b/tools/cert_create/src/tbbr/tbb_ext.c
index 1400fbf..8bcb070 100644
--- a/tools/cert_create/src/tbbr/tbb_ext.c
+++ b/tools/cert_create/src/tbbr/tbb_ext.c
@@ -61,6 +61,7 @@
 	[TRUSTED_BOOT_FW_HASH_EXT] = {
 		.oid = TRUSTED_BOOT_FW_HASH_OID,
 		.opt = "tb-fw",
+		.help_msg = "Trusted Boot Firmware image file",
 		.sn = "TrustedBootFirmwareHash",
 		.ln = "Trusted Boot Firmware hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -93,6 +94,7 @@
 	[SCP_FW_HASH_EXT] = {
 		.oid = SCP_FW_HASH_OID,
 		.opt = "scp-fw",
+		.help_msg = "SCP Firmware image file",
 		.sn = "SCPFirmwareHash",
 		.ln = "SCP Firmware hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -109,6 +111,7 @@
 	[SOC_AP_FW_HASH_EXT] = {
 		.oid = SOC_AP_FW_HASH_OID,
 		.opt = "soc-fw",
+		.help_msg = "SoC AP Firmware image file",
 		.sn = "SoCAPFirmwareHash",
 		.ln = "SoC AP Firmware hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -125,6 +128,7 @@
 	[TRUSTED_OS_FW_HASH_EXT] = {
 		.oid = TRUSTED_OS_FW_HASH_OID,
 		.opt = "tos-fw",
+		.help_msg = "Trusted OS image file",
 		.sn = "TrustedOSHash",
 		.ln = "Trusted OS hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -141,6 +145,7 @@
 	[NON_TRUSTED_WORLD_BOOTLOADER_HASH_EXT] = {
 		.oid = NON_TRUSTED_WORLD_BOOTLOADER_HASH_OID,
 		.opt = "nt-fw",
+		.help_msg = "Non-Trusted World Bootloader image file",
 		.sn = "NonTrustedWorldBootloaderHash",
 		.ln = "Non-Trusted World hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -149,6 +154,7 @@
 	[SCP_FWU_CFG_HASH_EXT] = {
 		.oid = SCP_FWU_CFG_HASH_OID,
 		.opt = "scp-fwu-cfg",
+		.help_msg = "SCP Firmware Update Config image file",
 		.sn = "SCPFWUpdateConfig",
 		.ln = "SCP Firmware Update Config hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -158,6 +164,7 @@
 	[AP_FWU_CFG_HASH_EXT] = {
 		.oid = AP_FWU_CFG_HASH_OID,
 		.opt = "ap-fwu-cfg",
+		.help_msg = "AP Firmware Update Config image file",
 		.sn = "APFWUpdateConfig",
 		.ln = "AP Firmware Update Config hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
@@ -167,6 +174,7 @@
 	[FWU_HASH_EXT] = {
 		.oid = FWU_HASH_OID,
 		.opt = "fwu",
+		.help_msg = "Firmware Updater image file",
 		.sn = "FWUpdaterHash",
 		.ln = "Firmware Updater hash (SHA256)",
 		.asn1_type = V_ASN1_OCTET_STRING,
diff --git a/tools/cert_create/src/tbbr/tbb_key.c b/tools/cert_create/src/tbbr/tbb_key.c
index 089425a..1d2f789 100644
--- a/tools/cert_create/src/tbbr/tbb_key.c
+++ b/tools/cert_create/src/tbbr/tbb_key.c
@@ -39,36 +39,43 @@
 	[ROT_KEY] = {
 		.id = ROT_KEY,
 		.opt = "rot-key",
+		.help_msg = "Root Of Trust key (input/output file)",
 		.desc = "Root Of Trust key"
 	},
 	[TRUSTED_WORLD_KEY] = {
 		.id = TRUSTED_WORLD_KEY,
 		.opt = "trusted-world-key",
+		.help_msg = "Trusted World key (input/output file)",
 		.desc = "Trusted World key"
 	},
 	[NON_TRUSTED_WORLD_KEY] = {
 		.id = NON_TRUSTED_WORLD_KEY,
 		.opt = "non-trusted-world-key",
+		.help_msg = "Non Trusted World key (input/output file)",
 		.desc = "Non Trusted World key"
 	},
 	[SCP_FW_CONTENT_CERT_KEY] = {
 		.id = SCP_FW_CONTENT_CERT_KEY,
 		.opt = "scp-fw-key",
+		.help_msg = "SCP Firmware Content Certificate key (input/output file)",
 		.desc = "SCP Firmware Content Certificate key"
 	},
 	[SOC_FW_CONTENT_CERT_KEY] = {
 		.id = SOC_FW_CONTENT_CERT_KEY,
 		.opt = "soc-fw-key",
+		.help_msg = "SoC Firmware Content Certificate key (input/output file)",
 		.desc = "SoC Firmware Content Certificate key"
 	},
 	[TRUSTED_OS_FW_CONTENT_CERT_KEY] = {
 		.id = TRUSTED_OS_FW_CONTENT_CERT_KEY,
 		.opt = "tos-fw-key",
+		.help_msg = "Trusted OS Firmware Content Certificate key (input/output file)",
 		.desc = "Trusted OS Firmware Content Certificate key"
 	},
 	[NON_TRUSTED_FW_CONTENT_CERT_KEY] = {
 		.id = NON_TRUSTED_FW_CONTENT_CERT_KEY,
 		.opt = "nt-fw-key",
+		.help_msg = "Non Trusted Firmware Content Certificate key (input/output file)",
 		.desc = "Non Trusted Firmware Content Certificate key"
 	}
 };