xlat: Use bool instead of int

Change-Id: I35d5b6a7c219f6f38983b30f157c1ed3808af17f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

5 files changed, 50 insertions, 48 deletions

diff --git a/lib/xlat_tables_v2/aarch32/xlat_tables_arch.c b/lib/xlat_tables_v2/aarch32/xlat_tables_arch.c
index 21bb22d5e..c09fb5964 100644
--- a/lib/xlat_tables_v2/aarch32/xlat_tables_arch.c
+++ b/lib/xlat_tables_v2/aarch32/xlat_tables_arch.c
@@ -9,7 +9,7 @@
 #include <assert.h>
 #include <cassert.h>
 #include <platform_def.h>
-#include <utils.h>
+#include <stdbool.h>
 #include <utils_def.h>
 #include <xlat_tables_v2.h>
 #include "../xlat_tables_private.h"
@@ -19,15 +19,15 @@
 #endif
 
 /*
- * Returns 1 if the provided granule size is supported, 0 otherwise.
+ * Returns true if the provided granule size is supported, false otherwise.
  */
-int xlat_arch_is_granule_size_supported(size_t size)
+bool xlat_arch_is_granule_size_supported(size_t size)
 {
 	/*
 	 * The library uses the long descriptor translation table format, which
 	 * supports 4 KiB pages only.
 	 */
-	return (size == PAGE_SIZE_4KB) ? 1 : 0;
+	return size == PAGE_SIZE_4KB;
 }
 
 size_t xlat_arch_get_max_supported_granule_size(void)
@@ -43,7 +43,7 @@ unsigned long long xlat_arch_get_max_supported_pa(void)
 }
 #endif /* ENABLE_ASSERTIONS*/
 
-int is_mmu_enabled_ctx(const xlat_ctx_t *ctx __unused)
+bool is_mmu_enabled_ctx(const xlat_ctx_t *ctx __unused)
 {
 	return (read_sctlr() & SCTLR_M_BIT) != 0;
 }
diff --git a/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c b/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
index 249484623..4e4292ff5 100644
--- a/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
+++ b/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
@@ -8,30 +8,31 @@
 #include <arch_helpers.h>
 #include <assert.h>
 #include <cassert.h>
+#include <stdbool.h>
 #include <sys/types.h>
 #include <utils_def.h>
 #include <xlat_tables_v2.h>
 #include "../xlat_tables_private.h"
 
 /*
- * Returns 1 if the provided granule size is supported, 0 otherwise.
+ * Returns true if the provided granule size is supported, false otherwise.
  */
-int xlat_arch_is_granule_size_supported(size_t size)
+bool xlat_arch_is_granule_size_supported(size_t size)
 {
 	u_register_t id_aa64mmfr0_el1 = read_id_aa64mmfr0_el1();
 
 	if (size == PAGE_SIZE_4KB) {
-		return (((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN4_SHIFT) &
+		return ((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN4_SHIFT) &
 			 ID_AA64MMFR0_EL1_TGRAN4_MASK) ==
-			 ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED) ? 1 : 0;
+			 ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED;
 	} else if (size == PAGE_SIZE_16KB) {
-		return (((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN16_SHIFT) &
+		return ((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN16_SHIFT) &
 			 ID_AA64MMFR0_EL1_TGRAN16_MASK) ==
-			 ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED) ? 1 : 0;
+			 ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED;
 	} else if (size == PAGE_SIZE_64KB) {
-		return (((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN64_SHIFT) &
+		return ((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN64_SHIFT) &
 			 ID_AA64MMFR0_EL1_TGRAN64_MASK) ==
-			 ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED) ? 1 : 0;
+			 ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED;
 	} else {
 		return 0;
 	}
@@ -39,12 +40,12 @@ int xlat_arch_is_granule_size_supported(size_t size)
 
 size_t xlat_arch_get_max_supported_granule_size(void)
 {
-	if (xlat_arch_is_granule_size_supported(PAGE_SIZE_64KB) != 0) {
+	if (xlat_arch_is_granule_size_supported(PAGE_SIZE_64KB)) {
 		return PAGE_SIZE_64KB;
-	} else if (xlat_arch_is_granule_size_supported(PAGE_SIZE_16KB) != 0) {
+	} else if (xlat_arch_is_granule_size_supported(PAGE_SIZE_16KB)) {
 		return PAGE_SIZE_16KB;
 	} else {
-		assert(xlat_arch_is_granule_size_supported(PAGE_SIZE_4KB) != 0);
+		assert(xlat_arch_is_granule_size_supported(PAGE_SIZE_4KB));
 		return PAGE_SIZE_4KB;
 	}
 }
@@ -99,15 +100,15 @@ unsigned long long xlat_arch_get_max_supported_pa(void)
 }
 #endif /* ENABLE_ASSERTIONS*/
 
-int is_mmu_enabled_ctx(const xlat_ctx_t *ctx)
+bool is_mmu_enabled_ctx(const xlat_ctx_t *ctx)
 {
 	if (ctx->xlat_regime == EL1_EL0_REGIME) {
 		assert(xlat_arch_current_el() >= 1U);
-		return ((read_sctlr_el1() & SCTLR_M_BIT) != 0U) ? 1 : 0;
+		return (read_sctlr_el1() & SCTLR_M_BIT) != 0U;
 	} else {
 		assert(ctx->xlat_regime == EL3_REGIME);
 		assert(xlat_arch_current_el() >= 3U);
-		return ((read_sctlr_el3() & SCTLR_M_BIT) != 0U) ? 1 : 0;
+		return (read_sctlr_el3() & SCTLR_M_BIT) != 0U;
 	}
 }
 
diff --git a/lib/xlat_tables_v2/xlat_tables_core.c b/lib/xlat_tables_v2/xlat_tables_core.c
index 80cd0a21f..54e58341a 100644
--- a/lib/xlat_tables_v2/xlat_tables_core.c
+++ b/lib/xlat_tables_v2/xlat_tables_core.c
@@ -9,6 +9,7 @@
 #include <debug.h>
 #include <errno.h>
 #include <platform_def.h>
+#include <stdbool.h>
 #include <string.h>
 #include <types.h>
 #include <utils_def.h>
@@ -39,7 +40,7 @@ static int xlat_table_get_index(const xlat_ctx_t *ctx, const uint64_t *table)
 	 * Maybe we were asked to get the index of the base level table, which
 	 * should never happen.
 	 */
-	assert(0);
+	assert(false);
 
 	return -1;
 }
@@ -73,10 +74,9 @@ static void xlat_table_dec_regions_count(const xlat_ctx_t *ctx,
 }
 
 /* Returns 0 if the specified table isn't empty, otherwise 1. */
-static int xlat_table_is_empty(const xlat_ctx_t *ctx, const uint64_t *table)
+static bool xlat_table_is_empty(const xlat_ctx_t *ctx, const uint64_t *table)
 {
-	return (ctx->tables_mapped_regions[xlat_table_get_index(ctx, table)] == 0)
-		? 1 : 0;
+	return ctx->tables_mapped_regions[xlat_table_get_index(ctx, table)] == 0;
 }
 
 #else /* PLAT_XLAT_TABLES_DYNAMIC */
@@ -333,7 +333,7 @@ static void xlat_tables_unmap_region(xlat_ctx_t *ctx, mmap_region_t *mm,
 			/*
 			 * If the subtable is now empty, remove its reference.
 			 */
-			if (xlat_table_is_empty(ctx, subtable) != 0) {
+			if (xlat_table_is_empty(ctx, subtable)) {
 				table_base[table_idx] = INVALID_DESC;
 				xlat_arch_tlbi_va(table_idx_va,
 						  ctx->xlat_regime);
@@ -650,12 +650,11 @@ static int mmap_add_region_check(const xlat_ctx_t *ctx, const mmap_region_t *mm)
 		 * Check if one of the regions is completely inside the other
 		 * one.
 		 */
-		int fully_overlapped_va =
-			(((base_va >= mm_cursor->base_va) &&
+		bool fully_overlapped_va =
+			((base_va >= mm_cursor->base_va) &&
 					(end_va <= mm_cursor_end_va)) ||
-			 ((mm_cursor->base_va >= base_va) &&
-						(mm_cursor_end_va <= end_va)))
-			? 1 : 0;
+			((mm_cursor->base_va >= base_va) &&
+						(mm_cursor_end_va <= end_va));
 
 		/*
 		 * Full VA overlaps are only allowed if both regions are
@@ -663,7 +662,7 @@ static int mmap_add_region_check(const xlat_ctx_t *ctx, const mmap_region_t *mm)
 		 * offset. Also, make sure that it's not the exact same area.
 		 * This can only be done with static regions.
 		 */
-		if (fully_overlapped_va != 0) {
+		if (fully_overlapped_va) {
 
 #if PLAT_XLAT_TABLES_DYNAMIC
 			if (((mm->attr & MT_DYNAMIC) != 0U) ||
@@ -688,12 +687,12 @@ static int mmap_add_region_check(const xlat_ctx_t *ctx, const mmap_region_t *mm)
 			unsigned long long mm_cursor_end_pa =
 				     mm_cursor->base_pa + mm_cursor->size - 1U;
 
-			int separated_pa = ((end_pa < mm_cursor->base_pa) ||
-				(base_pa > mm_cursor_end_pa)) ? 1 : 0;
-			int separated_va = ((end_va < mm_cursor->base_va) ||
-				(base_va > mm_cursor_end_va)) ? 1 : 0;
+			bool separated_pa = (end_pa < mm_cursor->base_pa) ||
+				(base_pa > mm_cursor_end_pa);
+			bool separated_va = (end_va < mm_cursor->base_va) ||
+				(base_va > mm_cursor_end_va);
 
-			if ((separated_va == 0) || (separated_pa == 0))
+			if (!separated_va || !separated_pa)
 				return -EPERM;
 		}
 	}
@@ -715,12 +714,12 @@ void mmap_add_region_ctx(xlat_ctx_t *ctx, const mmap_region_t *mm)
 		return;
 
 	/* Static regions must be added before initializing the xlat tables. */
-	assert(ctx->initialized == 0);
+	assert(!ctx->initialized);
 
 	ret = mmap_add_region_check(ctx, mm);
 	if (ret != 0) {
 		ERROR("mmap_add_region_check() failed. error %d\n", ret);
-		assert(0);
+		assert(false);
 		return;
 	}
 
@@ -856,7 +855,7 @@ int mmap_add_dynamic_region_ctx(xlat_ctx_t *ctx, mmap_region_t *mm)
 	 * Update the translation tables if the xlat tables are initialized. If
 	 * not, this region will be mapped when they are initialized.
 	 */
-	if (ctx->initialized != 0) {
+	if (ctx->initialized) {
 		end_va = xlat_tables_map_region(ctx, mm_cursor,
 				0U, ctx->base_table, ctx->base_table_entries,
 				ctx->base_level);
@@ -948,7 +947,7 @@ int mmap_remove_dynamic_region_ctx(xlat_ctx_t *ctx, uintptr_t base_va,
 		update_max_pa_needed = 1;
 
 	/* Update the translation tables if needed */
-	if (ctx->initialized != 0) {
+	if (ctx->initialized) {
 		xlat_tables_unmap_region(ctx, mm, 0U, ctx->base_table,
 					 ctx->base_table_entries,
 					 ctx->base_level);
@@ -987,10 +986,10 @@ int mmap_remove_dynamic_region_ctx(xlat_ctx_t *ctx, uintptr_t base_va,
 void init_xlat_tables_ctx(xlat_ctx_t *ctx)
 {
 	assert(ctx != NULL);
-	assert(ctx->initialized == 0);
+	assert(!ctx->initialized);
 	assert((ctx->xlat_regime == EL3_REGIME) ||
 	       (ctx->xlat_regime == EL1_EL0_REGIME));
-	assert(is_mmu_enabled_ctx(ctx) == 0);
+	assert(!is_mmu_enabled_ctx(ctx));
 
 	mmap_region_t *mm = ctx->mmap;
 
@@ -1028,7 +1027,7 @@ void init_xlat_tables_ctx(xlat_ctx_t *ctx)
 	assert(ctx->max_va <= ctx->va_max_address);
 	assert(ctx->max_pa <= ctx->pa_max_address);
 
-	ctx->initialized = 1;
+	ctx->initialized = true;
 
 	xlat_tables_print(ctx);
 }
diff --git a/lib/xlat_tables_v2/xlat_tables_private.h b/lib/xlat_tables_v2/xlat_tables_private.h
index 47c5ae8db..313bd8d68 100644
--- a/lib/xlat_tables_v2/xlat_tables_private.h
+++ b/lib/xlat_tables_v2/xlat_tables_private.h
@@ -8,6 +8,7 @@
 #define XLAT_TABLES_PRIVATE_H
 
 #include <platform_def.h>
+#include <stdbool.h>
 #include <xlat_tables_defs.h>
 
 #if PLAT_XLAT_TABLES_DYNAMIC
@@ -91,9 +92,9 @@ unsigned int xlat_arch_current_el(void);
 unsigned long long xlat_arch_get_max_supported_pa(void);
 
 /*
- * Return 1 if the MMU of the translation regime managed by the given xlat_ctx_t
- * is enabled, 0 otherwise.
+ * Returns true if the MMU of the translation regime managed by the given
+ * xlat_ctx_t is enabled, false otherwise.
  */
-int is_mmu_enabled_ctx(const xlat_ctx_t *ctx);
+bool is_mmu_enabled_ctx(const xlat_ctx_t *ctx);
 
 #endif /* XLAT_TABLES_PRIVATE_H */
diff --git a/lib/xlat_tables_v2/xlat_tables_utils.c b/lib/xlat_tables_v2/xlat_tables_utils.c
index 0026e9191..0cbd45e40 100644
--- a/lib/xlat_tables_v2/xlat_tables_utils.c
+++ b/lib/xlat_tables_v2/xlat_tables_utils.c
@@ -9,6 +9,7 @@
 #include <debug.h>
 #include <errno.h>
 #include <platform_def.h>
+#include <stdbool.h>
 #include <types.h>
 #include <utils_def.h>
 #include <xlat_tables_defs.h>
@@ -307,7 +308,7 @@ static uint64_t *find_xlat_table_entry(uintptr_t virtual_addr,
 	 * This shouldn't be reached, the translation table walk should end at
 	 * most at level XLAT_TABLE_LEVEL_MAX and return from inside the loop.
 	 */
-	assert(0);
+	assert(false);
 
 	return NULL;
 }
@@ -326,7 +327,7 @@ static int get_mem_attributes_internal(const xlat_ctx_t *ctx, uintptr_t base_va,
 	 * Sanity-check arguments.
 	 */
 	assert(ctx != NULL);
-	assert(ctx->initialized != 0);
+	assert(ctx->initialized);
 	assert((ctx->xlat_regime == EL1_EL0_REGIME) ||
 	       (ctx->xlat_regime == EL3_REGIME));
 
@@ -422,7 +423,7 @@ int change_mem_attributes(const xlat_ctx_t *ctx,
 	/* Note: This implementation isn't optimized. */
 
 	assert(ctx != NULL);
-	assert(ctx->initialized != 0);
+	assert(ctx->initialized);
 
 	unsigned long long virt_addr_space_size =
 		(unsigned long long)ctx->va_max_address + 1U;