Merge pull request #1651 from antonio-nino-diaz-arm/an/rand-misra

Fix some MISRA defects

lib/el3_runtime/aarch32/context_mgmt.c

@@ -14,6 +14,7 @@
 #include <platform.h>
 #include <platform_def.h>
 #include <smccc_helpers.h>
+#include <stdbool.h>
 #include <string.h>
 #include <utils.h>
 
@@ -129,7 +130,7 @@ void cm_setup_context(cpu_context_t *ctx, const entry_point_info_t *ep)
  * When EL2 is implemented but unused `el2_unused` is non-zero, otherwise
  * it is zero.
  ******************************************************************************/
-static void enable_extensions_nonsecure(int el2_unused)
+static void enable_extensions_nonsecure(bool el2_unused)
 {
 #if IMAGE_BL32
 #if ENABLE_AMU
@@ -175,7 +176,7 @@ void cm_prepare_el3_exit(uint32_t security_state)
 {
 	uint32_t hsctlr, scr;
 	cpu_context_t *ctx = cm_get_context(security_state);
-	int el2_unused = 0;
+	bool el2_unused = false;
 
 	assert(ctx);
 
@@ -200,7 +201,7 @@ void cm_prepare_el3_exit(uint32_t security_state)
 			isb();
 		} else if (read_id_pfr1() &
 			(ID_PFR1_VIRTEXT_MASK << ID_PFR1_VIRTEXT_SHIFT)) {
-			el2_unused = 1;
+			el2_unused = true;
 
 			/*
 			 * Set the NS bit to access NS copies of certain banked

lib/el3_runtime/aarch64/context_mgmt.c

@@ -18,6 +18,7 @@
 #include <pubsub_events.h>
 #include <smccc_helpers.h>
 #include <spe.h>
+#include <stdbool.h>
 #include <string.h>
 #include <sve.h>
 #include <utils.h>
@@ -231,7 +232,7 @@ void cm_setup_context(cpu_context_t *ctx, const entry_point_info_t *ep)
  * When EL2 is implemented but unused `el2_unused` is non-zero, otherwise
  * it is zero.
  ******************************************************************************/
-static void enable_extensions_nonsecure(int el2_unused)
+static void enable_extensions_nonsecure(bool el2_unused)
 {
 #if IMAGE_BL31
 #if ENABLE_SPE_FOR_LOWER_ELS
@@ -289,7 +290,7 @@ void cm_prepare_el3_exit(uint32_t security_state)
 {
 	uint32_t sctlr_elx, scr_el3, mdcr_el2;
 	cpu_context_t *ctx = cm_get_context(security_state);
-	int el2_unused = 0;
+	bool el2_unused = false;
 	uint64_t hcr_el2 = 0;
 
 	assert(ctx);
@@ -304,7 +305,7 @@ void cm_prepare_el3_exit(uint32_t security_state)
 			sctlr_elx |= SCTLR_EL2_RES1;
 			write_sctlr_el2(sctlr_elx);
 		} else if (EL_IMPLEMENTED(2)) {
-			el2_unused = 1;
+			el2_unused = true;
 
 			/*
 			 * EL2 present but unused, need to disable safely.

lib/extensions/amu/aarch32/amu.c

@@ -10,6 +10,7 @@
 #include <arch_helpers.h>
 #include <platform.h>
 #include <pubsub_events.h>
+#include <stdbool.h>
 
 #define AMU_GROUP0_NR_COUNTERS	4
 
@@ -20,17 +21,17 @@ struct amu_ctx {
 
 static struct amu_ctx amu_ctxs[PLATFORM_CORE_COUNT];
 
-int amu_supported(void)
+bool amu_supported(void)
 {
 	uint64_t features;
 
 	features = read_id_pfr0() >> ID_PFR0_AMU_SHIFT;
-	return (features & ID_PFR0_AMU_MASK) == 1;
+	return (features & ID_PFR0_AMU_MASK) == 1U;
 }
 
-void amu_enable(int el2_unused)
+void amu_enable(bool el2_unused)
 {
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return;
 
 	if (el2_unused) {
@@ -54,8 +55,8 @@ void amu_enable(int el2_unused)
 /* Read the group 0 counter identified by the given `idx`. */
 uint64_t amu_group0_cnt_read(int idx)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP0_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP0_NR_COUNTERS));
 
 	return amu_group0_cnt_read_internal(idx);
 }
@@ -63,8 +64,8 @@ uint64_t amu_group0_cnt_read(int idx)
 /* Write the group 0 counter identified by the given `idx` with `val`. */
 void amu_group0_cnt_write(int idx, uint64_t val)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP0_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP0_NR_COUNTERS));
 
 	amu_group0_cnt_write_internal(idx, val);
 	isb();
@@ -73,8 +74,8 @@ void amu_group0_cnt_write(int idx, uint64_t val)
 /* Read the group 1 counter identified by the given `idx`. */
 uint64_t amu_group1_cnt_read(int idx)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	return amu_group1_cnt_read_internal(idx);
 }
@@ -82,8 +83,8 @@ uint64_t amu_group1_cnt_read(int idx)
 /* Write the group 1 counter identified by the given `idx` with `val`. */
 void amu_group1_cnt_write(int idx, uint64_t val)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	amu_group1_cnt_write_internal(idx, val);
 	isb();
@@ -91,8 +92,8 @@ void amu_group1_cnt_write(int idx, uint64_t val)
 
 void amu_group1_set_evtype(int idx, unsigned int val)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	amu_group1_set_evtype_internal(idx, val);
 	isb();
@@ -103,7 +104,7 @@ static void *amu_context_save(const void *arg)
 	struct amu_ctx *ctx;
 	int i;
 
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return (void *)-1;
 
 	ctx = &amu_ctxs[plat_my_core_pos()];
@@ -126,7 +127,7 @@ static void *amu_context_save(const void *arg)
 	for (i = 0; i < AMU_GROUP1_NR_COUNTERS; i++)
 		ctx->group1_cnts[i] = amu_group1_cnt_read(i);
 
-	return 0;
+	return (void *)0;
 }
 
 static void *amu_context_restore(const void *arg)
@@ -134,13 +135,13 @@ static void *amu_context_restore(const void *arg)
 	struct amu_ctx *ctx;
 	int i;
 
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return (void *)-1;
 
 	ctx = &amu_ctxs[plat_my_core_pos()];
 
 	/* Counters were disabled in `amu_context_save()` */
-	assert(read_amcntenset0() == 0 && read_amcntenset1() == 0);
+	assert((read_amcntenset0() == 0U) && (read_amcntenset1() == 0U));
 
 	/* Restore group 0 counters */
 	for (i = 0; i < AMU_GROUP0_NR_COUNTERS; i++)
@@ -153,7 +154,7 @@ static void *amu_context_restore(const void *arg)
 
 	/* Enable group 1 counters */
 	write_amcntenset1(AMU_GROUP1_COUNTERS_MASK);
-	return 0;
+	return (void *)0;
 }
 
 SUBSCRIBE_TO_EVENT(psci_suspend_pwrdown_start, amu_context_save);

lib/extensions/amu/aarch64/amu.c

@@ -11,6 +11,7 @@
 #include <assert.h>
 #include <platform.h>
 #include <pubsub_events.h>
+#include <stdbool.h>
 
 #define AMU_GROUP0_NR_COUNTERS	4
 
@@ -21,23 +22,23 @@ struct amu_ctx {
 
 static struct amu_ctx amu_ctxs[PLATFORM_CORE_COUNT];
 
-int amu_supported(void)
+bool amu_supported(void)
 {
 	uint64_t features;
 
 	features = read_id_aa64pfr0_el1() >> ID_AA64PFR0_AMU_SHIFT;
-	return (features & ID_AA64PFR0_AMU_MASK) == 1;
+	return (features & ID_AA64PFR0_AMU_MASK) == 1U;
 }
 
 /*
  * Enable counters.  This function is meant to be invoked
  * by the context management library before exiting from EL3.
  */
-void amu_enable(int el2_unused)
+void amu_enable(bool el2_unused)
 {
 	uint64_t v;
 
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return;
 
 	if (el2_unused) {
@@ -67,8 +68,8 @@ void amu_enable(int el2_unused)
 /* Read the group 0 counter identified by the given `idx`. */
 uint64_t amu_group0_cnt_read(int idx)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP0_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP0_NR_COUNTERS));
 
 	return amu_group0_cnt_read_internal(idx);
 }
@@ -76,8 +77,8 @@ uint64_t amu_group0_cnt_read(int idx)
 /* Write the group 0 counter identified by the given `idx` with `val`. */
 void amu_group0_cnt_write(int idx, uint64_t val)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP0_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP0_NR_COUNTERS));
 
 	amu_group0_cnt_write_internal(idx, val);
 	isb();
@@ -86,8 +87,8 @@ void amu_group0_cnt_write(int idx, uint64_t val)
 /* Read the group 1 counter identified by the given `idx`. */
 uint64_t amu_group1_cnt_read(int idx)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	return amu_group1_cnt_read_internal(idx);
 }
@@ -95,8 +96,8 @@ uint64_t amu_group1_cnt_read(int idx)
 /* Write the group 1 counter identified by the given `idx` with `val`. */
 void amu_group1_cnt_write(int idx, uint64_t val)
 {
-	assert(amu_supported() != 0);
-	assert(idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	amu_group1_cnt_write_internal(idx, val);
 	isb();
@@ -108,8 +109,8 @@ void amu_group1_cnt_write(int idx, uint64_t val)
  */
 void amu_group1_set_evtype(int idx, unsigned int val)
 {
-	assert(amu_supported() != 0);
-	assert (idx >= 0 && idx < AMU_GROUP1_NR_COUNTERS);
+	assert(amu_supported());
+	assert((idx >= 0) && (idx < AMU_GROUP1_NR_COUNTERS));
 
 	amu_group1_set_evtype_internal(idx, val);
 	isb();
@@ -120,14 +121,14 @@ static void *amu_context_save(const void *arg)
 	struct amu_ctx *ctx = &amu_ctxs[plat_my_core_pos()];
 	int i;
 
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return (void *)-1;
 
 	/* Assert that group 0/1 counter configuration is what we expect */
-	assert(read_amcntenset0_el0() == AMU_GROUP0_COUNTERS_MASK &&
-	       read_amcntenset1_el0() == AMU_GROUP1_COUNTERS_MASK);
+	assert((read_amcntenset0_el0() == AMU_GROUP0_COUNTERS_MASK) &&
+	       (read_amcntenset1_el0() == AMU_GROUP1_COUNTERS_MASK));
 
-	assert((sizeof(int) * 8) - __builtin_clz(AMU_GROUP1_COUNTERS_MASK)
+	assert(((sizeof(int) * 8) - __builtin_clz(AMU_GROUP1_COUNTERS_MASK))
 		<= AMU_GROUP1_NR_COUNTERS);
 
 	/*
@@ -146,7 +147,7 @@ static void *amu_context_save(const void *arg)
 	for (i = 0; i < AMU_GROUP1_NR_COUNTERS; i++)
 		ctx->group1_cnts[i] = amu_group1_cnt_read(i);
 
-	return 0;
+	return (void *)0;
 }
 
 static void *amu_context_restore(const void *arg)
@@ -154,30 +155,30 @@ static void *amu_context_restore(const void *arg)
 	struct amu_ctx *ctx = &amu_ctxs[plat_my_core_pos()];
 	int i;
 
-	if (amu_supported() == 0)
+	if (!amu_supported())
 		return (void *)-1;
 
 	/* Counters were disabled in `amu_context_save()` */
-	assert(read_amcntenset0_el0() == 0 && read_amcntenset1_el0() == 0);
+	assert((read_amcntenset0_el0() == 0U) && (read_amcntenset1_el0() == 0U));
 
-	assert((sizeof(int) * 8) - __builtin_clz(AMU_GROUP1_COUNTERS_MASK)
+	assert(((sizeof(int) * 8U) - __builtin_clz(AMU_GROUP1_COUNTERS_MASK))
 		<= AMU_GROUP1_NR_COUNTERS);
 
 	/* Restore group 0 counters */
 	for (i = 0; i < AMU_GROUP0_NR_COUNTERS; i++)
-		if (AMU_GROUP0_COUNTERS_MASK & (1U << i))
+		if ((AMU_GROUP0_COUNTERS_MASK & (1U << i)) != 0U)
 			amu_group0_cnt_write(i, ctx->group0_cnts[i]);
 
 	/* Restore group 1 counters */
 	for (i = 0; i < AMU_GROUP1_NR_COUNTERS; i++)
-		if (AMU_GROUP1_COUNTERS_MASK & (1U << i))
+		if ((AMU_GROUP1_COUNTERS_MASK & (1U << i)) != 0U)
 			amu_group1_cnt_write(i, ctx->group1_cnts[i]);
 
 	/* Restore group 0/1 counter configuration */
 	write_amcntenset0_el0(AMU_GROUP0_COUNTERS_MASK);
 	write_amcntenset1_el0(AMU_GROUP1_COUNTERS_MASK);
 
-	return 0;
+	return (void *)0;
 }
 
 SUBSCRIBE_TO_EVENT(psci_suspend_pwrdown_start, amu_context_save);

lib/extensions/mpam/mpam.c

@@ -16,7 +16,7 @@ bool mpam_supported(void)
 	return ((features & ID_AA64PFR0_MPAM_MASK) != 0U);
 }
 
-void mpam_enable(int el2_unused)
+void mpam_enable(bool el2_unused)
 {
 	if (!mpam_supported())
 		return;
@@ -31,7 +31,7 @@ void mpam_enable(int el2_unused)
 	 * If EL2 is implemented but unused, disable trapping to EL2 when lower
 	 * ELs access their own MPAM registers.
 	 */
-	if (el2_unused != 0) {
+	if (el2_unused) {
 		write_mpam2_el2(0);
 
 		if ((read_mpamidr_el1() & MPAMIDR_HAS_HCR_BIT) != 0U)

lib/extensions/spe/spe.c

@@ -8,26 +8,30 @@
 #include <arch_helpers.h>
 #include <pubsub.h>
 #include <spe.h>
+#include <stdbool.h>
 
-/*
+static inline void psb_csync(void)
+{
+	/*
 	 * The assembler does not yet understand the psb csync mnemonic
 	 * so use the equivalent hint instruction.
 	 */
-#define psb_csync()	asm volatile("hint #17")
+	__asm__ volatile("hint #17");
+}
 
-int spe_supported(void)
+bool spe_supported(void)
 {
 	uint64_t features;
 
 	features = read_id_aa64dfr0_el1() >> ID_AA64DFR0_PMS_SHIFT;
-	return (features & ID_AA64DFR0_PMS_MASK) == 1;
+	return (features & ID_AA64DFR0_PMS_MASK) == 1U;
 }
 
-void spe_enable(int el2_unused)
+void spe_enable(bool el2_unused)
 {
 	uint64_t v;
 
-	if (spe_supported() == 0)
+	if (!spe_supported())
 		return;
 
 	if (el2_unused) {
@@ -59,7 +63,7 @@ void spe_disable(void)
 {
 	uint64_t v;
 
-	if (spe_supported() == 0)
+	if (!spe_supported())
 		return;
 
 	/* Drain buffered data */
@@ -75,13 +79,14 @@ void spe_disable(void)
 
 static void *spe_drain_buffers_hook(const void *arg)
 {
-	if (spe_supported() == 0)
+	if (!spe_supported())
 		return (void *)-1;
 
 	/* Drain buffered data */
 	psb_csync();
 	dsbnsh();
-	return 0;
+
+	return (void *)0;
 }
 
 SUBSCRIBE_TO_EVENT(cm_entering_secure_world, spe_drain_buffers_hook);

lib/extensions/sve/sve.c

@@ -7,21 +7,22 @@
 #include <arch.h>
 #include <arch_helpers.h>
 #include <pubsub.h>
+#include <stdbool.h>
 #include <sve.h>
 
-int sve_supported(void)
+bool sve_supported(void)
 {
 	uint64_t features;
 
 	features = read_id_aa64pfr0_el1() >> ID_AA64PFR0_SVE_SHIFT;
-	return (features & ID_AA64PFR0_SVE_MASK) == 1;
+	return (features & ID_AA64PFR0_SVE_MASK) == 1U;
 }
 
 static void *disable_sve_hook(const void *arg)
 {
 	uint64_t cptr;
 
-	if (sve_supported() == 0)
+	if (!sve_supported())
 		return (void *)-1;
 
 	/*
@@ -39,14 +40,14 @@ static void *disable_sve_hook(const void *arg)
 	 * No explicit ISB required here as ERET to switch to Secure
 	 * world covers it
 	 */
-	return 0;
+	return (void *)0;
 }
 
 static void *enable_sve_hook(const void *arg)
 {
 	uint64_t cptr;
 
-	if (sve_supported() == 0)
+	if (!sve_supported())
 		return (void *)-1;
 
 	/*
@@ -60,14 +61,14 @@ static void *enable_sve_hook(const void *arg)
 	 * No explicit ISB required here as ERET to switch to Non-secure
 	 * world covers it
 	 */
-	return 0;
+	return (void *)0;
 }
 
-void sve_enable(int el2_unused)
+void sve_enable(bool el2_unused)
 {
 	uint64_t cptr;
 
-	if (sve_supported() == 0)
+	if (!sve_supported())
 		return;
 
 #if CTX_INCLUDE_FPREGS

lib/pmf/pmf_main.c

@@ -26,7 +26,7 @@
 IMPORT_SYM(uintptr_t, __PMF_SVC_DESCS_START__,		PMF_SVC_DESCS_START);
 IMPORT_SYM(uintptr_t, __PMF_SVC_DESCS_END__,		PMF_SVC_DESCS_END);
 IMPORT_SYM(uintptr_t, __PMF_PERCPU_TIMESTAMP_END__,	PMF_PERCPU_TIMESTAMP_END);
-IMPORT_SYM(intptr_t,  __PMF_TIMESTAMP_START__,		PMF_TIMESTAMP_ARRAY_START);
+IMPORT_SYM(uintptr_t,  __PMF_TIMESTAMP_START__,		PMF_TIMESTAMP_ARRAY_START);
 
 #define PMF_PERCPU_TIMESTAMP_SIZE	(PMF_PERCPU_TIMESTAMP_END - PMF_TIMESTAMP_ARRAY_START)
 
@@ -67,15 +67,15 @@ int pmf_setup(void)
 	pmf_svc_descs = (pmf_svc_desc_t *) PMF_SVC_DESCS_START;
 	for (ii = 0; ii < pmf_svc_descs_num; ii++) {
 
-		assert(pmf_svc_descs[ii].get_ts);
+		assert(pmf_svc_descs[ii].get_ts != NULL);
 
 		/*
 		 * Call the initialization routine for this
 		 * PMF service, if it is defined.
 		 */
-		if (pmf_svc_descs[ii].init) {
+		if (pmf_svc_descs[ii].init != NULL) {
 			rc = pmf_svc_descs[ii].init();
-			if (rc) {
+			if (rc != 0) {
 				WARN("Could not initialize PMF"
 					"service %s - skipping \n",
 					pmf_svc_descs[ii].name);
@@ -125,7 +125,7 @@ static pmf_svc_desc_t *get_service(unsigned int tid)
 	if (pmf_num_services == 0)
 		return NULL;
 
-	assert(pmf_svc_descs);
+	assert(pmf_svc_descs != NULL);
 
 	do {
 		mid = (low + high) / 2;
@@ -158,7 +158,7 @@ int pmf_get_timestamp_smc(unsigned int tid,
 		unsigned long long *ts_value)
 {
 	pmf_svc_desc_t *svc_desc;
-	assert(ts_value);
+	assert(ts_value != NULL);
 
 	/* Search for registered service. */
 	svc_desc = get_service(tid);
@@ -247,7 +247,7 @@ unsigned long long __pmf_get_timestamp(uintptr_t base_addr,
 	unsigned long long *ts_addr = (unsigned long long *)calc_ts_addr(base_addr,
 				tid, cpuid);
 
-	if (flags & PMF_CACHE_MAINT)
+	if ((flags & PMF_CACHE_MAINT) != 0U)
 		inv_dcache_range((uintptr_t)ts_addr, sizeof(unsigned long long));
 
 	return *ts_addr;

lib/pmf/pmf_smc.c

@@ -37,7 +37,8 @@ uintptr_t pmf_smc_handler(unsigned int smc_fid,
 			 * x0 --> error code.
 			 * x1 - x2 --> time-stamp value.
 			 */
-			rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value);
+			rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
+					(unsigned int)x3, &ts_value);
 			SMC_RET3(handle, rc, (uint32_t)ts_value,
 					(uint32_t)(ts_value >> 32));
 		}
@@ -49,7 +50,8 @@ uintptr_t pmf_smc_handler(unsigned int smc_fid,
 			 * x0 --> error code.
 			 * x1 --> time-stamp value.
 			 */
-			rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value);
+			rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
+					(unsigned int)x3, &ts_value);
 			SMC_RET2(handle, rc, ts_value);
 		}
 	}

plat/arm/common/arm_sip_svc.c

@@ -58,7 +58,7 @@ static uintptr_t arm_sip_handler(unsigned int smc_fid,
 
 		/* Validate supplied entry point */
 		pc = (u_register_t) ((x1 << 32) | (uint32_t) x2);
-		if (arm_validate_ns_entrypoint(pc))
+		if (arm_validate_ns_entrypoint(pc) != 0)
 			SMC_RET1(handle, STATE_SW_E_PARAM);
 
 		/*