diff --git a/src/flash/nand/arm_io.c b/src/flash/nand/arm_io.c
index 67b150885..d54958adc 100644
--- a/src/flash/nand/arm_io.c
+++ b/src/flash/nand/arm_io.c
@@ -48,7 +48,6 @@ static int arm_code_to_working_area(struct target *target,
 	unsigned additional, struct working_area **area)
 {
 	uint8_t code_buf[code_size];
-	unsigned i;
 	int retval;
 	unsigned size = code_size + additional;
 
@@ -67,8 +66,7 @@ static int arm_code_to_working_area(struct target *target,
 	}
 
 	/* buffer code in target endianness */
-	for (i = 0; i < code_size / 4; i++)
-		target_buffer_set_u32(target, code_buf + i * 4, code[i]);
+	target_buffer_set_u32_array(target, code_buf, code_size / 4, code);
 
 	/* copy code to work area */
 	retval = target_write_memory(target, (*area)->address,
diff --git a/src/flash/nor/cfi.c b/src/flash/nor/cfi.c
index 5724c184f..56d8e6e85 100644
--- a/src/flash/nor/cfi.c
+++ b/src/flash/nor/cfi.c
@@ -1103,19 +1103,6 @@ static int cfi_protect(struct flash_bank *bank, int set, int first, int last)
 	}
 }
 
-/* Convert code image to target endian
- * FIXME create general block conversion fcts in target.c?) */
-static void cfi_fix_code_endian(struct target *target, uint8_t *dest,
-	const uint32_t *src, uint32_t count)
-{
-	uint32_t i;
-	for (i = 0; i < count; i++) {
-		target_buffer_set_u32(target, dest, *src);
-		dest += 4;
-		src++;
-	}
-}
-
 static uint32_t cfi_command_val(struct flash_bank *bank, uint8_t cmd)
 {
 	struct target *target = bank->target;
@@ -1264,7 +1251,8 @@ static int cfi_intel_write_block(struct flash_bank *bank, uint8_t *buffer,
 				"Increase CFI_MAX_INTEL_CODESIZE and recompile.");
 		return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 	}
-	cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
+
+	target_buffer_set_u32_array(target, target_code, target_code_size / 4, target_code_src);
 
 	/* Get memory for block write handler */
 	retval = target_alloc_working_area(target,
@@ -1504,7 +1492,8 @@ static int cfi_spansion_write_block_mips(struct flash_bank *bank, uint8_t *buffe
 		LOG_ERROR("Out of memory");
 		return ERROR_FAIL;
 	}
-	cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
+
+	target_buffer_set_u32_array(target, target_code, target_code_size / 4, target_code_src);
 
 	/* allocate working area */
 	retval = target_alloc_working_area(target, target_code_size,
@@ -1883,7 +1872,8 @@ static int cfi_spansion_write_block(struct flash_bank *bank, uint8_t *buffer,
 		LOG_ERROR("Out of memory");
 		return ERROR_FAIL;
 	}
-	cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
+
+	target_buffer_set_u32_array(target, target_code, target_code_size / 4, target_code_src);
 
 	/* allocate working area */
 	retval = target_alloc_working_area(target, target_code_size,
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index 6b1a1731b..7f0e3adb3 100644
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -2576,7 +2576,6 @@ int arm7_9_bulk_write_memory(struct target *target,
 {
 	int retval;
 	struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
-	int i;
 
 	if (address % 4 != 0)
 		return ERROR_TARGET_UNALIGNED_ACCESS;
@@ -2595,8 +2594,7 @@ int arm7_9_bulk_write_memory(struct target *target,
 		}
 
 		/* copy target instructions to target endianness */
-		for (i = 0; i < 6; i++)
-			target_buffer_set_u32(target, dcc_code_buf + i*4, dcc_code[i]);
+		target_buffer_set_u32_array(target, dcc_code_buf, ARRAY_SIZE(dcc_code), dcc_code);
 
 		/* write DCC code to working area, using the non-optimized
 		 * memory write to avoid ending up here again */
diff --git a/src/target/feroceon.c b/src/target/feroceon.c
index acaa1b3b4..ee0bafd24 100644
--- a/src/target/feroceon.c
+++ b/src/target/feroceon.c
@@ -510,8 +510,7 @@ static int feroceon_bulk_write_memory(struct target *target,
 		}
 
 		/* copy target instructions to target endianness */
-		for (i = 0; i < dcc_size/4; i++)
-			target_buffer_set_u32(target, dcc_code_buf + i*4, dcc_code[i]);
+		target_buffer_set_u32_array(target, dcc_code_buf, ARRAY_SIZE(dcc_code), dcc_code);
 
 		/* write DCC code to working area, using the non-optimized
 		 * memory write to avoid ending up here again */