Add target_write_memory wrapper:

- replaces all calls to target->type->write_memory.
- add documentation in target_s to warn not to invoke callback directly.


git-svn-id: svn://svn.berlios.de/openocd/trunk@1960 b42882b7-edfa-0310-969c-e2dbd0fdcd60

16 files changed, 126 insertions, 107 deletions

diff --git a/src/flash/at91sam7.c b/src/flash/at91sam7.c
index 186aa066..82e98ef4 100644
--- a/src/flash/at91sam7.c
+++ b/src/flash/at91sam7.c
@@ -1027,7 +1027,7 @@ static int at91sam7_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32
 		/* Write one block to the PageWriteBuffer */
 		buffer_pos = (pagen-first_page)*dst_min_alignment;
 		wcount = CEIL(count,4);
-		if((retval = target->type->write_memory(target, bank->base+pagen*dst_min_alignment, 4, wcount, buffer+buffer_pos)) != ERROR_OK)
+		if((retval = target_write_memory(target, bank->base+pagen*dst_min_alignment, 4, wcount, buffer+buffer_pos)) != ERROR_OK)
 		{
 			return retval;
 		}
diff --git a/src/flash/cfi.c b/src/flash/cfi.c
index 999b0a73..ba6c7a80 100644
--- a/src/flash/cfi.c
+++ b/src/flash/cfi.c
@@ -260,7 +260,7 @@ static void cfi_intel_clear_status_register(flash_bank_t *bank)
 	}
 
 	cfi_command(bank, 0x50, command);
-	target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
 u8 cfi_intel_wait_status_busy(flash_bank_t *bank, int timeout)
@@ -356,12 +356,12 @@ static int cfi_read_intel_pri_ext(flash_bank_t *bank)
 	if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
 	{
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 		cfi_command(bank, 0xff, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -419,7 +419,7 @@ static int cfi_read_spansion_pri_ext(flash_bank_t *bank)
 	if ((pri_ext->pri[0] != 'P') || (pri_ext->pri[1] != 'R') || (pri_ext->pri[2] != 'I'))
 	{
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -492,7 +492,7 @@ static int cfi_read_atmel_pri_ext(flash_bank_t *bank)
 	if ((atmel_pri_ext.pri[0] != 'P') || (atmel_pri_ext.pri[1] != 'R') || (atmel_pri_ext.pri[2] != 'I'))
 	{
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -688,13 +688,13 @@ static int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
 	for (i = first; i <= last; i++)
 	{
 		cfi_command(bank, 0x20, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0xd0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -704,7 +704,7 @@ static int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
 		else
 		{
 			cfi_command(bank, 0xff, command);
-			if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -715,7 +715,7 @@ static int cfi_intel_erase(struct flash_bank_s *bank, int first, int last)
 	}
 
 	cfi_command(bank, 0xff, command);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 
 }
 
@@ -731,37 +731,37 @@ static int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
 	for (i = first; i <= last; i++)
 	{
 		cfi_command(bank, 0xaa, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0x55, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0x80, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0xaa, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0x55, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 
 		cfi_command(bank, 0x30, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -771,7 +771,7 @@ static int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
 		else
 		{
 			cfi_command(bank, 0xf0, command);
-			if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -782,7 +782,7 @@ static int cfi_spansion_erase(struct flash_bank_s *bank, int first, int last)
 	}
 
 	cfi_command(bank, 0xf0, command);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
 static int cfi_erase(struct flash_bank_s *bank, int first, int last)
@@ -842,7 +842,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 	{
 		cfi_command(bank, 0x60, command);
 		LOG_DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-		if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -850,7 +850,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 		{
 			cfi_command(bank, 0x01, command);
 			LOG_DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-			if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -860,7 +860,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 		{
 			cfi_command(bank, 0xd0, command);
 			LOG_DEBUG("address: 0x%4.4x, command: 0x%4.4x", flash_address(bank, i, 0x0), target_buffer_get_u32(target, command));
-			if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -878,7 +878,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 			u8 block_status;
 			/* read block lock bit, to verify status */
 			cfi_command(bank, 0x90, command);
-			if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -888,7 +888,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 			{
 				LOG_ERROR("couldn't change block lock status (set = %i, block_status = 0x%2.2x)", set, block_status);
 				cfi_command(bank, 0x70, command);
-				if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+				if((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
 				{
 					return retval;
 				}
@@ -917,13 +917,13 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 				cfi_intel_clear_status_register(bank);
 
 				cfi_command(bank, 0x60, command);
-				if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+				if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 				{
 					return retval;
 				}
 
 				cfi_command(bank, 0x01, command);
-				if((retval = target->type->write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+				if((retval = target_write_memory(target, flash_address(bank, i, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 				{
 					return retval;
 				}
@@ -934,7 +934,7 @@ static int cfi_intel_protect(struct flash_bank_s *bank, int set, int first, int
 	}
 
 	cfi_command(bank, 0xff, command);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
 static int cfi_protect(struct flash_bank_s *bank, int set, int first, int last)
@@ -1554,12 +1554,12 @@ static int cfi_intel_write_word(struct flash_bank_s *bank, u8 *word, u32 address
 
 	cfi_intel_clear_status_register(bank);
 	cfi_command(bank, 0x40, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -1567,7 +1567,7 @@ static int cfi_intel_write_word(struct flash_bank_s *bank, u8 *word, u32 address
 	if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != 0x80)
 	{
 		cfi_command(bank, 0xff, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -1622,14 +1622,14 @@ static int cfi_intel_write_words(struct flash_bank_s *bank, u8 *word, u32 wordco
 
 	/* Initiate buffer operation _*/
 	cfi_command(bank, 0xE8, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 	if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
 	{
 		cfi_command(bank, 0xff, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -1640,26 +1640,26 @@ static int cfi_intel_write_words(struct flash_bank_s *bank, u8 *word, u32 wordco
 
 	/* Write buffer wordcount-1 and data words */
 	cfi_command(bank, bufferwsize-1, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
-	if((retval = target->type->write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	/* Commit write operation */
 	cfi_command(bank, 0xd0, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 	if (cfi_intel_wait_status_busy(bank, 1000 * (1 << cfi_info->buf_write_timeout_max)) != 0x80)
 	{
 		cfi_command(bank, 0xff, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -1680,24 +1680,24 @@ static int cfi_spansion_write_word(struct flash_bank_s *bank, u8 *word, u32 addr
 	u8 command[8];
 
 	cfi_command(bank, 0xaa, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	cfi_command(bank, 0x55, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	cfi_command(bank, 0xa0, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, word)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -1705,7 +1705,7 @@ static int cfi_spansion_write_word(struct flash_bank_s *bank, u8 *word, u32 addr
 	if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
 	{
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -1757,39 +1757,39 @@ static int cfi_spansion_write_words(struct flash_bank_s *bank, u8 *word, u32 wor
 
 	// Unlock
 	cfi_command(bank, 0xaa, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	cfi_command(bank, 0x55, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	// Buffer load command
 	cfi_command(bank, 0x25, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	/* Write buffer wordcount-1 and data words */
 	cfi_command(bank, bufferwsize-1, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
-	if((retval = target->type->write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, bufferwsize, word)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	/* Commit write operation */
 	cfi_command(bank, 0x29, command);
-	if((retval = target->type->write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, address, bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -1797,7 +1797,7 @@ static int cfi_spansion_write_words(struct flash_bank_s *bank, u8 *word, u32 wor
 	if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
 	{
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -2012,12 +2012,12 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 
 	/* return to read array mode, so we can read from flash again for padding */
 	cfi_command(bank, 0xf0, current_word);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
 	{
 		return retval;
 	}
 	cfi_command(bank, 0xff, current_word);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -2052,12 +2052,12 @@ int cfi_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
 
 	/* return to read array mode */
 	cfi_command(bank, 0xf0, current_word);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word)) != ERROR_OK)
 	{
 		return retval;
 	}
 	cfi_command(bank, 0xff, current_word);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, current_word);
 }
 
 static void cfi_fixup_atmel_reversed_erase_regions(flash_bank_t *bank, void *param)
@@ -2133,17 +2133,17 @@ static int cfi_probe(struct flash_bank_s *bank)
 
 	/* switch to read identifier codes mode ("AUTOSELECT") */
 	cfi_command(bank, 0xaa, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 	cfi_command(bank, 0x55, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 	cfi_command(bank, 0x90, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -2177,12 +2177,12 @@ static int cfi_probe(struct flash_bank_s *bank)
 	LOG_INFO("Flash Manufacturer/Device: 0x%04x 0x%04x", cfi_info->manufacturer, cfi_info->device_id);
 	/* switch back to read array mode */
 	cfi_command(bank, 0xf0, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 	cfi_command(bank, 0xff, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x00), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -2203,7 +2203,7 @@ static int cfi_probe(struct flash_bank_s *bank)
 		 * SST flashes clearly violate this, and we will consider them incompatbile for now
 		 */
 		cfi_command(bank, 0x98, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -2217,12 +2217,12 @@ static int cfi_probe(struct flash_bank_s *bank)
 		if ((cfi_info->qry[0] != 'Q') || (cfi_info->qry[1] != 'R') || (cfi_info->qry[2] != 'Y'))
 		{
 			cfi_command(bank, 0xf0, command);
-			if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
 			cfi_command(bank, 0xff, command);
-			if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+			if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 			{
 				return retval;
 			}
@@ -2307,12 +2307,12 @@ static int cfi_probe(struct flash_bank_s *bank)
 		 * we use both reset commands, as some Intel flashes fail to recognize the 0xF0 command
 		 */
 		cfi_command(bank, 0xf0, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
 		cfi_command(bank, 0xff, command);
-		if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
+		if((retval = target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -2410,7 +2410,7 @@ static int cfi_intel_protect_check(struct flash_bank_s *bank)
 		return ERROR_FLASH_OPERATION_FAILED;
 
 	cfi_command(bank, 0x90, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, 0x55), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -2426,7 +2426,7 @@ static int cfi_intel_protect_check(struct flash_bank_s *bank)
 	}
 
 	cfi_command(bank, 0xff, command);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
 static int cfi_spansion_protect_check(struct flash_bank_s *bank)
@@ -2439,19 +2439,19 @@ static int cfi_spansion_protect_check(struct flash_bank_s *bank)
 	int i;
 
 	cfi_command(bank, 0xaa, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	cfi_command(bank, 0x55, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
 
 	cfi_command(bank, 0x90, command);
-	if((retval = target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
+	if((retval = target_write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command)) != ERROR_OK)
 	{
 		return retval;
 	}
@@ -2467,7 +2467,7 @@ static int cfi_spansion_protect_check(struct flash_bank_s *bank)
 	}
 
 	cfi_command(bank, 0xf0, command);
-	return target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+	return target_write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 }
 
 static int cfi_protect_check(struct flash_bank_s *bank)
diff --git a/src/flash/lpc2000.c b/src/flash/lpc2000.c
index 2708d535..dbbc3748 100644
--- a/src/flash/lpc2000.c
+++ b/src/flash/lpc2000.c
@@ -258,7 +258,7 @@ static int lpc2000_iap_call(flash_bank_t *bank, int code, u32 param_table[5], u3
 		/* write IAP code to working area */
 		target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
 		target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
-		if((retval = target->type->write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
+		if((retval = target_write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate)) != ERROR_OK)
 		{
 			return retval;
 		}
diff --git a/src/flash/lpc288x.c b/src/flash/lpc288x.c
index 505dd1e3..29b7b81c 100644
--- a/src/flash/lpc288x.c
+++ b/src/flash/lpc288x.c
@@ -406,7 +406,7 @@ static int lpc288x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32
 			 * it seems not to be a LOT slower....
 			 * bulk_write_memory() is no quicker :(*/
 #if 1
-			if (target->type->write_memory(target, offset + dest_offset, 4, 128, page_buffer) != ERROR_OK)
+			if (target_write_memory(target, offset + dest_offset, 4, 128, page_buffer) != ERROR_OK)
 			{
 				LOG_ERROR("Write failed s %x p %x", sector, page);
 				return ERROR_FLASH_OPERATION_FAILED;
diff --git a/src/flash/lpc3180_nand_controller.c b/src/flash/lpc3180_nand_controller.c
index a074acca..06048085 100644
--- a/src/flash/lpc3180_nand_controller.c
+++ b/src/flash/lpc3180_nand_controller.c
@@ -602,8 +602,8 @@ static int lpc3180_write_page(struct nand_device_s *device, u32 page, u8 *data,
 			/* write MLC_ECC_ENC_REG to start encode cycle */
 			target_write_u32(target, 0x200b8008, 0x0);
 
-			target->type->write_memory(target, 0x200a8000, 4, 128, page_buffer + (quarter * 512));
-			target->type->write_memory(target, 0x200a8000, 1, 6, oob_buffer + (quarter * 6));
+			target_write_memory(target, 0x200a8000, 4, 128, page_buffer + (quarter * 512));
+			target_write_memory(target, 0x200a8000, 1, 6, oob_buffer + (quarter * 6));
 
 			/* write MLC_ECC_AUTO_ENC_REG to start auto encode */
 			target_write_u32(target, 0x200b8010, 0x0);
diff --git a/src/flash/mflash.c b/src/flash/mflash.c
index cc1d1ee2..2587b6b5 100644
--- a/src/flash/mflash.c
+++ b/src/flash/mflash.c
@@ -494,7 +494,7 @@ static int mg_mflash_do_write_sects(void *buff, u32 sect_num, u32 sect_cnt,
 		if (ret != ERROR_OK)
 			LOG_ERROR("mg_io_wait_drq time out");
 
-		ret = target->type->write_memory(target, address, 2, MG_MFLASH_SECTOR_SIZE / 2, buff_ptr);
+		ret = target_write_memory(target, address, 2, MG_MFLASH_SECTOR_SIZE / 2, buff_ptr);
 		if (ret != ERROR_OK)
 			LOG_ERROR("mem write error");
 		buff_ptr += MG_MFLASH_SECTOR_SIZE;
@@ -927,7 +927,7 @@ static int mg_verify_interface(void)
 		for (i = 0; i < MG_MFLASH_SECTOR_SIZE >> 1; i++)
 			buff[i] = i;
 
-		target->type->write_memory(target, address, 2,
+		target_write_memory(target, address, 2,
 				MG_MFLASH_SECTOR_SIZE / 2, (u8 *)buff);
 
 		memset(buff, 0xff, MG_MFLASH_SECTOR_SIZE);
diff --git a/src/flash/orion_nand.c b/src/flash/orion_nand.c
index f6f41f35..cf26568d 100644
--- a/src/flash/orion_nand.c
+++ b/src/flash/orion_nand.c
@@ -131,7 +131,7 @@ static int orion_nand_fast_block_write(struct nand_device_s *device, u8 *data, i
 			target_buffer_set_u32(target, code_buf + i*4, code[i]);
 
 		/* write code to working area */
-                retval = target->type->write_memory(target,
+                retval = target_write_memory(target,
 					hw->copy_area->address,
 					4, code_size/4, code_buf);
 		if (retval != ERROR_OK)
@@ -143,7 +143,7 @@ static int orion_nand_fast_block_write(struct nand_device_s *device, u8 *data, i
 	retval = target->type->bulk_write_memory(target, target_buf,
 						 size/4, data);
 	if (retval == ERROR_OK && size & 3) {
-		retval = target->type->write_memory(target,
+		retval = target_write_memory(target,
 					target_buf + (size & ~3),
 					1, size & 3, data + (size & ~3));
 	}
diff --git a/src/flash/str7x.c b/src/flash/str7x.c
index ffd01fa0..a1cb9636 100644
--- a/src/flash/str7x.c
+++ b/src/flash/str7x.c
@@ -546,11 +546,11 @@ static int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 co
 		target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
 		
 		/* data word 1 */
-		target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, buffer + bytes_written);
+		target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, buffer + bytes_written);
 		bytes_written += 4;
 		
 		/* data word 2 */
-		target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, buffer + bytes_written);
+		target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, buffer + bytes_written);
 		bytes_written += 4;
 		
 		/* start programming cycle */
@@ -593,11 +593,11 @@ static int str7x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 co
 		target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
 		
 		/* data word 1 */
-		target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, last_dword);
+		target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0), 4, 1, last_dword);
 		bytes_written += 4;
 		
 		/* data word 2 */
-		target->type->write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, last_dword + 4);
+		target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1), 4, 1, last_dword + 4);
 		bytes_written += 4;
 		
 		/* start programming cycle */
diff --git a/src/flash/str9x.c b/src/flash/str9x.c
index 32445ae2..7de98b12 100644
--- a/src/flash/str9x.c
+++ b/src/flash/str9x.c
@@ -569,7 +569,7 @@ static int str9x_write(struct flash_bank_s *bank,
 		
 		/* write data command */
 		target_write_u16(target, bank_adr, 0x40);
-		target->type->write_memory(target, address, 2, 1, buffer + bytes_written);
+		target_write_memory(target, address, 2, 1, buffer + bytes_written);
 		
 		/* get status command */
 		target_write_u16(target, bank_adr, 0x70);
@@ -618,7 +618,7 @@ static int str9x_write(struct flash_bank_s *bank,
 		
 		/* write data comamnd */
 		target_write_u16(target, bank_adr, 0x40);
-		target->type->write_memory(target, address, 2, 1, last_halfword);
+		target_write_memory(target, address, 2, 1, last_halfword);
 		
 		/* query status command */
 		target_write_u16(target, bank_adr, 0x70);
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index 48263efe..4db26e92 100644
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -378,7 +378,7 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 				return retval;
 			}
 			if (current_instr==arm7_9->arm_bkpt)
-				if ((retval = target->type->write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
+				if ((retval = target_write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
 				{
 					return retval;
 				}
@@ -392,7 +392,7 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 				return retval;
 			}
 			if (current_instr==arm7_9->thumb_bkpt)
-				if ((retval = target->type->write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
+				if ((retval = target_write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
 				{
 					return retval;
 				}
@@ -2628,7 +2628,7 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe
 	int i;
 
 	if (!arm7_9->dcc_downloads)
-		return target->type->write_memory(target, address, 4, count, buffer);
+		return target_write_memory(target, address, 4, count, buffer);
 
 	/* regrab previously allocated working_area, or allocate a new one */
 	if (!arm7_9->dcc_working_area)
@@ -2639,7 +2639,7 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe
 		if (target_alloc_working_area(target, 24, &arm7_9->dcc_working_area) != ERROR_OK)
 		{
 			LOG_INFO("no working area available, falling back to memory writes");
-			return target->type->write_memory(target, address, 4, count, buffer);
+			return target_write_memory(target, address, 4, count, buffer);
 		}
 
 		/* copy target instructions to target endianness */
@@ -2649,7 +2649,7 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe
 		}
 
 		/* write DCC code to working area */
-		if ((retval = target->type->write_memory(target, arm7_9->dcc_working_area->address, 4, 6, dcc_code_buf)) != ERROR_OK)
+		if ((retval = target_write_memory(target, arm7_9->dcc_working_area->address, 4, 6, dcc_code_buf)) != ERROR_OK)
 		{
 			return retval;
 		}
diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c
index 6f51d91b..ab217f98 100644
--- a/src/target/cortex_m3.c
+++ b/src/target/cortex_m3.c
@@ -934,7 +934,7 @@ int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 		{
 			return retval;
 		}
-		if((retval = target->type->write_memory(target, breakpoint->address & 0xFFFFFFFE, breakpoint->length, 1, code)) != ERROR_OK)
+		if((retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE, breakpoint->length, 1, code)) != ERROR_OK)
 		{
 			return retval;
 		}
@@ -975,14 +975,14 @@ int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint
 		/* restore original instruction (kept in target endianness) */
 		if (breakpoint->length == 4)
 		{
-			if((retval = target->type->write_memory(target, breakpoint->address & 0xFFFFFFFE, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
+			if((retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
 			{
 				return retval;
 			}
 		}
 		else
 		{
-			if((retval = target->type->write_memory(target, breakpoint->address & 0xFFFFFFFE, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
+			if((retval = target_write_memory(target, breakpoint->address & 0xFFFFFFFE, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
 			{
 				return retval;
 			}
diff --git a/src/target/feroceon.c b/src/target/feroceon.c
index 2bd2824e..8637b515 100644
--- a/src/target/feroceon.c
+++ b/src/target/feroceon.c
@@ -546,7 +546,7 @@ int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buf
 	u32 dcc_size = sizeof(dcc_code);
 
 	if (!arm7_9->dcc_downloads)
-		return target->type->write_memory(target, address, 4, count, buffer);
+		return target_write_memory(target, address, 4, count, buffer);
 
 	/* regrab previously allocated working_area, or allocate a new one */
 	if (!arm7_9->dcc_working_area)
@@ -557,7 +557,7 @@ int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buf
 		if (target_alloc_working_area(target, dcc_size, &arm7_9->dcc_working_area) != ERROR_OK)
 		{
 			LOG_INFO("no working area available, falling back to memory writes");
-			return target->type->write_memory(target, address, 4, count, buffer);
+			return target_write_memory(target, address, 4, count, buffer);
 		}
 
 		/* copy target instructions to target endianness */
@@ -565,7 +565,7 @@ int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buf
 			target_buffer_set_u32(target, dcc_code_buf + i*4, dcc_code[i]);
 
 		/* write DCC code to working area */
-		if((retval = target->type->write_memory(target, arm7_9->dcc_working_area->address, 4, dcc_size/4, dcc_code_buf)) != ERROR_OK)
+		if((retval = target_write_memory(target, arm7_9->dcc_working_area->address, 4, dcc_size/4, dcc_code_buf)) != ERROR_OK)
 		{
 			return retval;
 		}
diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c
index a16590c8..e9fcf43d 100644
--- a/src/target/mips_m4k.c
+++ b/src/target/mips_m4k.c
@@ -617,7 +617,7 @@ int mips_m4k_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 			}
 			if (current_instr == MIPS32_SDBBP)
 			{
-				if((retval = target->type->write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
+				if((retval = target_write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
 				{
 					return retval;
 				}
@@ -635,7 +635,7 @@ int mips_m4k_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 			
 			if (current_instr == MIPS16_SDBBP)
 			{
-				if((retval = target->type->write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
+				if((retval = target_write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
 				{
 					return retval;
 				}
diff --git a/src/target/target.c b/src/target/target.c
index 5b75c348..d5a40195 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -531,6 +531,13 @@ int target_read_memory(struct target_s *target,
 	return target->type->read_memory(target, address, size, count, buffer);
 }
 
+int target_write_memory(struct target_s *target,
+		u32 address, u32 size, u32 count, u8 *buffer)
+{
+	return target->type->write_memory(target, address, size, count, buffer);
+}
+
+
 int target_init(struct command_context_s *cmd_ctx)
 {
 	target_t *target = all_targets;
@@ -898,7 +905,7 @@ int target_free_working_area_restore(struct target_s *target, working_area_t *ar
 	if (restore&&target->backup_working_area)
 	{
 		int retval;
-		if((retval = target->type->write_memory(target, area->address, 4, area->size / 4, area->backup)) != ERROR_OK)
+		if((retval = target_write_memory(target, area->address, 4, area->size / 4, area->backup)) != ERROR_OK)
 			return retval;
 	}
 
@@ -1004,7 +1011,7 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
 
 	if (((address % 2) == 0) && (size == 2))
 	{
-		return target->type->write_memory(target, address, 2, 1, buffer);
+		return target_write_memory(target, address, 2, 1, buffer);
 	}
 
 	/* handle unaligned head bytes */
@@ -1015,7 +1022,7 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
 		if (unaligned > size)
 			unaligned = size;
 
-		if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
+		if ((retval = target_write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 			return retval;
 
 		buffer += unaligned;
@@ -1036,7 +1043,7 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
 		}
 		else
 		{
-			if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
+			if ((retval = target_write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 				return retval;
 		}
 
@@ -1048,7 +1055,7 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
 	/* handle tail writes of less than 4 bytes */
 	if (size > 0)
 	{
-		if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
+		if ((retval = target_write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 			return retval;
 	}
 
@@ -1272,7 +1279,7 @@ int target_write_u32(struct target_s *target, u32 address, u32 value)
 	LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 
 	target_buffer_set_u32(target, value_buf, value);
-	if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
+	if ((retval = target_write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
 	{
 		LOG_DEBUG("failed: %i", retval);
 	}
@@ -1293,7 +1300,7 @@ int target_write_u16(struct target_s *target, u32 address, u16 value)
 	LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 
 	target_buffer_set_u16(target, value_buf, value);
-	if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
+	if ((retval = target_write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
 	{
 		LOG_DEBUG("failed: %i", retval);
 	}
@@ -1312,7 +1319,7 @@ int target_write_u8(struct target_s *target, u32 address, u8 value)
 
 	LOG_DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
 
-	if ((retval = target->type->write_memory(target, address, 1, 1, &value)) != ERROR_OK)
+	if ((retval = target_write_memory(target, address, 1, 1, &value)) != ERROR_OK)
 	{
 		LOG_DEBUG("failed: %i", retval);
 	}
@@ -1967,7 +1974,7 @@ static int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char
 	}
 	for (i=0; i<count; i++)
 	{
-		int retval = target->type->write_memory(target,
+		int retval = target_write_memory(target,
 				address + i * wordsize, wordsize, 1, value_buf);
 		if (ERROR_OK != retval)
 			return retval;
@@ -3034,7 +3041,7 @@ static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_
 		}
 		len -= count;
 
-		retval = target->type->write_memory(target, addr, width, count, buffer);
+		retval = target_write_memory(target, addr, width, count, buffer);
 		if (retval != ERROR_OK) {
 			/* BOO !*/
 			LOG_ERROR("array2mem: Write @ 0x%08x, w=%d, cnt=%d, failed", addr, width, count);
@@ -3525,7 +3532,7 @@ static int tcl_target_func( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
 			break;
 		}
 		for( x = 0 ; x < c ; x++ ){
-			e = target->type->write_memory( target, a, b, 1, target_buf );
+			e = target_write_memory( target, a, b, 1, target_buf );
 			if( e != ERROR_OK ){
 				Jim_SetResult_sprintf( interp, "Error writing @ 0x%08x: %d\n", (int)(a), e );
 				return JIM_ERR;
diff --git a/src/target/target.h b/src/target/target.h
index b11e2b6b..2214c06e 100644
--- a/src/target/target.h
+++ b/src/target/target.h
@@ -167,6 +167,10 @@ typedef struct target_type_s
 	 */
 	int (*read_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 	int (*write_memory_imp)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
+	/**
+	 * Target memory write callback.  Do @b not call this function
+	 * directly, use target_write_memory() instead.
+	 */
 	int (*write_memory)(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
 
 	/* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
@@ -383,6 +387,14 @@ extern target_t *get_target(const char *id);
  */
 extern int target_read_memory(struct target_s *target,
 		u32 address, u32 size, u32 count, u8 *buffer);
+/**
+ * Write @count items of @a size bytes to the memory of @a target at
+ * the @a address given.
+ *
+ * This routine is wrapper for target->type->write_memory.
+ */
+extern int target_write_memory(struct target_s *target,
+		u32 address, u32 size, u32 count, u8 *buffer);
 
 extern int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
 extern int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer);
diff --git a/src/target/xscale.c b/src/target/xscale.c
index f200e8ce..50c816c1 100644
--- a/src/target/xscale.c
+++ b/src/target/xscale.c
@@ -2284,14 +2284,14 @@ int xscale_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
 		/* restore original instruction (kept in target endianness) */
 		if (breakpoint->length == 4)
 		{
-			if((retval = target->type->write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
+			if((retval = target_write_memory(target, breakpoint->address, 4, 1, breakpoint->orig_instr)) != ERROR_OK)
 			{
 				return retval;
 			}
 		}
 		else
 		{
-			if((retval = target->type->write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
+			if((retval = target_write_memory(target, breakpoint->address, 2, 1, breakpoint->orig_instr)) != ERROR_OK)
 			{
 				return retval;
 			}