- added stellaris.[ch] missing from Cortex-M3 merge

git-svn-id: svn://svn.berlios.de/openocd/trunk@171 b42882b7-edfa-0310-969c-e2dbd0fdcd60

1 files changed, 793 insertions, 0 deletions

diff --git a/src/flash/stellaris.c b/src/flash/stellaris.c
new file mode 100644
index 00000000..68a5179d
--- /dev/null
+++ b/src/flash/stellaris.c
@@ -0,0 +1,793 @@
+/***************************************************************************
+ *   Copyright (C) 2006 by Magnus Lundin                                   *
+ *   lundin@mlu.mine.nu                    	                               *
+ *									                                       *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+/***************************************************************************
+* STELLARIS is tested on LM3S811
+* 
+*
+*
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "replacements.h"
+
+#include "stellaris.h"
+#include "cortex_m3.h"
+
+#include "flash.h"
+#include "target.h"
+#include "log.h"
+#include "binarybuffer.h"
+#include "types.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int stellaris_register_commands(struct command_context_s *cmd_ctx);
+int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+int stellaris_erase(struct flash_bank_s *bank, int first, int last);
+int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last);
+int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
+int stellaris_probe(struct flash_bank_s *bank);
+int stellaris_erase_check(struct flash_bank_s *bank);
+int stellaris_protect_check(struct flash_bank_s *bank);
+int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size);
+
+u32 stellaris_get_flash_status(flash_bank_t *bank);
+void stellaris_set_flash_mode(flash_bank_t *bank,int mode);
+u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);
+
+flash_driver_t stellaris_flash =
+{
+	.name = "stellaris",
+	.register_commands = stellaris_register_commands,
+	.flash_bank_command = stellaris_flash_bank_command,
+	.erase = stellaris_erase,
+	.protect = stellaris_protect,
+	.write = stellaris_write,
+	.probe = stellaris_probe,
+	.erase_check = stellaris_erase_check,
+	.protect_check = stellaris_protect_check,
+	.info = stellaris_info
+};
+
+
+struct {
+	u32 partno;
+	char partname[];
+}	StellarisParts[] =
+{
+	{0x01,"LM3S101"},
+	{0x02,"LM3S102"},
+	{0x11,"LM3S301"},
+	{0x12,"LM3S310"},
+	{0x13,"LM3S315"},
+	{0x14,"LM3S316"},
+	{0x15,"LM3S328"},
+	{0x21,"LM3S601"},
+	{0x22,"LM3S610"},
+	{0x23,"LM3S611"},
+	{0x24,"LM3S612"},
+	{0x25,"LM3S613"},
+	{0x26,"LM3S615"},
+	{0x27,"LM3S628"},
+	{0x31,"LM3S801"},
+	{0x32,"LM3S811"},
+	{0x33,"LM3S812"},
+	{0x34,"LM3S815"},
+	{0x35,"LM3S828"},
+	{0,"Unknown part"}
+};
+
+/***************************************************************************
+*	openocd command interface                                              *
+***************************************************************************/
+
+int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+{
+	stellaris_flash_bank_t *stellaris_info;
+	
+	if (argc < 6)
+	{
+		WARNING("incomplete flash_bank stellaris configuration");
+		return ERROR_FLASH_BANK_INVALID;
+	}
+	
+	stellaris_info = calloc(sizeof(stellaris_flash_bank_t),1);
+	bank->base = 0x0;
+	bank->driver_priv = stellaris_info;
+	
+	stellaris_info->target_name ="Unknown target";
+	stellaris_info->target = get_target_by_num(strtoul(args[5], NULL, 0));
+	if (!stellaris_info->target)
+	{
+		ERROR("no target '%i' configured", args[5]);
+		exit(-1);
+	}
+	
+	/* part wasn't probed for info yet */
+	stellaris_info->did1 = 0;
+	
+	/* TODO Use an optional main oscillator clock rate in kHz from arg[6] */ 
+	return ERROR_OK;
+}
+
+int stellaris_register_commands(struct command_context_s *cmd_ctx)
+{
+/*
+	command_t *stellaris_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, NULL);
+	register_command(cmd_ctx, stellaris_cmd, "gpnvm", stellaris_handle_gpnvm_command, COMMAND_EXEC,
+			"stellaris gpnvm <num> <bit> set|clear, set or clear stellaris gpnvm bit");
+*/
+	return ERROR_OK;
+}
+
+int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
+{
+	int printed;
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	
+	stellaris_read_part_info(bank);
+
+	if (stellaris_info->did1 == 0)
+	{
+		printed = snprintf(buf, buf_size, "Cannot identify target as a Stellaris\n");
+		buf += printed;
+		buf_size -= printed;
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	printed = snprintf(buf, buf_size, "\nLMI Stellaris information: Chip is %s v%i.%02i\n",stellaris_info->target_name, (stellaris_info->did0>>8)&0xFF, (stellaris_info->did0)&0xFF);
+	buf += printed;
+	buf_size -= printed;
+
+	printed = snprintf(buf, buf_size, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik,  flashsize: %ik\n", 
+	 stellaris_info->did1, stellaris_info->did1, "ARMV7M", (1+(stellaris_info->dc0>>16)&0xFFFF)/4, (1+stellaris_info->dc0&0xFFFF)*2);
+	buf += printed;
+	buf_size -= printed;
+
+	printed = snprintf(buf, buf_size, "master clock(estimated): %ikHz,  rcc is 0x%x \n", stellaris_info->mck_freq / 1000, stellaris_info->rcc);
+	buf += printed;
+	buf_size -= printed;
+
+	if (stellaris_info->num_lockbits>0) {		
+		printed = snprintf(buf, buf_size, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", stellaris_info->pagesize, stellaris_info->num_lockbits, stellaris_info->lockbits,stellaris_info->num_pages/stellaris_info->num_lockbits);
+		buf += printed;
+		buf_size -= printed;
+	}
+	return ERROR_OK;
+}
+
+/***************************************************************************
+*	chip identification and status                                         *
+***************************************************************************/
+
+u32 stellaris_get_flash_status(flash_bank_t *bank)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	u32 fmc;
+	
+	target_read_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, &fmc);
+	
+	return fmc;
+}
+
+/** Read clock configuration and set stellaris_info->usec_clocks*/
+ 
+void stellaris_read_clock_info(flash_bank_t *bank)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	u32 rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
+	unsigned long tmp, mainfreq;
+
+	target_read_u32(target, SCB_BASE|RCC, &rcc);
+	DEBUG("Stellaris RCC %x",rcc);
+	target_read_u32(target, SCB_BASE|PLLCFG, &pllcfg);
+	DEBUG("Stellaris PLLCFG %x",pllcfg);
+	stellaris_info->rcc = rcc;
+	
+	sysdiv = (rcc>>23)&0xF;
+	usesysdiv = (rcc>>22)&0x1;
+	bypass = (rcc>>11)&0x1;
+	oscsrc = (rcc>>4)&0x3;
+	/* xtal = (rcc>>6)&0xF; */
+	switch (oscsrc)
+	{
+		case 0:
+			mainfreq = 6000000;  /* Default xtal */
+			break;
+		case 1:
+			mainfreq = 22500000; /* Internal osc. 15 MHz +- 50% */
+			break;
+		case 2:
+			mainfreq = 5625000;  /* Internal osc. / 4 */
+			break;
+		case 3:
+			WARNING("Invalid oscsrc (3) in rcc register");
+			mainfreq = 6000000;
+			break;
+	}
+	
+	if (!bypass)
+		mainfreq = 200000000; /* PLL out frec */
+		
+	if (usesysdiv)
+		stellaris_info->mck_freq = mainfreq/(1+sysdiv);
+	else
+		stellaris_info->mck_freq = mainfreq;
+	
+	/* Forget old flash timing */
+       stellaris_set_flash_mode(bank,0);
+}
+
+/* Setup the timimg registers */
+void stellaris_set_flash_mode(flash_bank_t *bank,int mode)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+
+	u32 usecrl = (stellaris_info->mck_freq/1000000ul-1);
+	DEBUG("usecrl = %i",usecrl);	
+	target_write_u32(target, SCB_BASE|USECRL , usecrl);
+	
+}
+
+u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout)
+{
+	u32 status;
+	
+	/* Stellaris waits for cmdbit to clear */
+	while (((status = stellaris_get_flash_status(bank)) & waitbits) && (timeout-- > 0))
+	{
+		DEBUG("status: 0x%x", status);
+		usleep(1000);
+	}
+	
+	/* Flash errors are reflected in the FLASH_CRIS register */
+
+	return status;
+}
+
+
+/* Send one command to the flash controller */
+int stellaris_flash_command(struct flash_bank_s *bank,u8 cmd,u16 pagen) 
+{
+	u32 fmc;
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+
+	fmc = FMC_WRKEY | cmd; 
+	target_write_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, fmc);
+	DEBUG("Flash command: 0x%x", fmc);
+
+	if (stellaris_wait_status_busy(bank, cmd, 100)) 
+	{
+		return ERROR_FLASH_OPERATION_FAILED;
+	}		
+
+	return ERROR_OK;
+}
+
+/* Read device id register, main clock frequency register and fill in driver info structure */
+int stellaris_read_part_info(struct flash_bank_s *bank)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	u32 did0,did1, status;
+	int i;
+	
+	/* Read and parse chip identification register */
+	target_read_u32(target, SCB_BASE|DID0, &did0);
+	target_read_u32(target, SCB_BASE|DID1, &did1);
+	target_read_u32(target, SCB_BASE|DC0, &stellaris_info->dc0);
+	target_read_u32(target, SCB_BASE|DC1, &stellaris_info->dc1);
+	DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x",did0, did1, stellaris_info->dc0,stellaris_info->dc1);
+
+	if (((did0>>27)&0x7)) 
+	{
+		WARNING("Unkown did0 version, cannot identify target");
+		return ERROR_FLASH_OPERATION_FAILED;
+	
+	}
+
+	if (did1>>24) 
+	{
+		WARNING("Unkown did1 version/family, cannot positively identify target as a Stellaris");
+	}
+
+	if (did1 == 0)
+	{
+		WARNING("Cannot identify target as a Stellaris");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	for (i=0;StellarisParts[i].partno;i++)
+	{
+		if (StellarisParts[i].partno==((did1>>16)&0xFF))
+			break;
+	}
+	
+	stellaris_info->target_name = StellarisParts[i].partname;
+	
+	stellaris_info->did0 = did0;
+	stellaris_info->did1 = did1;
+	
+	stellaris_info->num_lockbits = 1+stellaris_info->dc0&0xFFFF;
+	stellaris_info->num_pages = 2*(1+stellaris_info->dc0&0xFFFF);
+	stellaris_info->pagesize = 1024;
+	bank->size = 1024*stellaris_info->num_pages;
+	stellaris_info->pages_in_lockregion = 2;
+	target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
+
+	// Read main and master clock freqency register 
+	stellaris_read_clock_info(bank);
+	
+	status = stellaris_get_flash_status(bank);
+	
+	WARNING("stellaris flash only tested for LM3S811 series");
+	
+	return ERROR_OK;
+}
+
+/***************************************************************************
+*	flash operations                                         *
+***************************************************************************/
+
+int stellaris_erase_check(struct flash_bank_s *bank)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	int i;
+	
+	/* */
+	
+	return ERROR_OK;
+}
+
+int stellaris_protect_check(struct flash_bank_s *bank)
+{
+	u32 status;
+	
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+
+	if (stellaris_info->did1 == 0)
+	{
+		stellaris_read_part_info(bank);
+	}
+
+	if (stellaris_info->did1 == 0)
+	{
+		WARNING("Cannot identify target as an AT91SAM");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+		
+	status = stellaris_get_flash_status(bank);
+	stellaris_info->lockbits = status >> 16;
+	
+	return ERROR_OK;
+}
+
+int stellaris_erase(struct flash_bank_s *bank, int first, int last)
+{
+	int banknr;
+	u32 flash_fmc, flash_cris;
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	
+	if (stellaris_info->target->state != TARGET_HALTED)
+	{
+		return ERROR_TARGET_NOT_HALTED;
+	}
+	
+	if (stellaris_info->did1 == 0)
+	{
+		stellaris_read_part_info(bank);
+	}
+
+	if (stellaris_info->did1 == 0)
+	{
+		WARNING("Cannot identify target as an AT91SAM");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}	
+	
+	if ((first < 0) || (last < first) || (last >= stellaris_info->num_pages))
+	{
+		return ERROR_FLASH_SECTOR_INVALID;
+	}
+
+	/* Configure the flash controller timing */
+	stellaris_read_clock_info(bank);	
+	stellaris_set_flash_mode(bank,0);
+
+	/* Clear and disable flash programming interrupts */
+	target_write_u32(target, FLASH_CIM, 0);
+	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
+
+	if ((first == 0) && (last == (stellaris_info->num_pages-1)))
+	{
+		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
+		/* Wait until erase complete */
+		do
+		{
+			target_read_u32(target, FLASH_FMC, &flash_fmc);
+		}
+		while(flash_fmc & FMC_MERASE);
+		
+		return ERROR_OK;
+	}
+
+	for (banknr=first;banknr<=last;banknr++)
+	{
+		/* Address is first word in page */
+		target_write_u32(target, FLASH_FMA, banknr*stellaris_info->pagesize);
+		/* Write erase command */
+		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_ERASE);
+		/* Wait until erase complete */
+		do
+		{
+			target_read_u32(target, FLASH_FMC, &flash_fmc);
+		}
+		while(flash_fmc & FMC_ERASE);
+
+		/* Check acess violations */
+		target_read_u32(target, FLASH_CRIS, &flash_cris);
+		if(flash_cris & (AMASK))
+		{
+			WARNING("Error erasing flash page %i,  flash_cris 0x%x", banknr, flash_cris);
+			target_write_u32(target, FLASH_CRIS, 0);
+			return ERROR_FLASH_OPERATION_FAILED;
+		}
+	}
+
+	return ERROR_OK;
+}
+
+int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
+{
+	u32 cmd, fmppe, flash_fmc, flash_cris;
+	int lockregion;
+	
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	
+	if (stellaris_info->target->state != TARGET_HALTED)
+	{
+		return ERROR_TARGET_NOT_HALTED;
+	}
+	
+	if ((first < 0) || (last < first) || (last >= stellaris_info->num_lockbits))
+	{
+		return ERROR_FLASH_SECTOR_INVALID;
+	}
+	
+	if (stellaris_info->did1 == 0)
+	{
+		stellaris_read_part_info(bank);
+	}
+
+	if (stellaris_info->did1 == 0)
+	{
+		WARNING("Cannot identify target as an Stellaris MCU");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	/* Configure the flash controller timing */
+	stellaris_read_clock_info(bank);	
+	stellaris_set_flash_mode(bank,0);
+
+	fmppe = stellaris_info->lockbits;	
+	for (lockregion=first;lockregion<=last;lockregion++) 
+	{
+		if (set)
+			 fmppe &= ~(1<<lockregion); 
+		else
+			 fmppe |= (1<<lockregion); 
+	}
+
+	/* Clear and disable flash programming interrupts */
+	target_write_u32(target, FLASH_CIM, 0);
+	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
+	
+	DEBUG("fmppe 0x%x",fmppe);
+	target_write_u32(target, SCB_BASE|FMPPE, fmppe);
+	/* Commit FMPPE */
+	target_write_u32(target, FLASH_FMA, 1);
+	/* Write commit command */
+	/* TODO safety check, sice this cannot be undone */
+	WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
+	/* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
+	/* Wait until erase complete */
+	do
+	{
+		target_read_u32(target, FLASH_FMC, &flash_fmc);
+	}
+	while(flash_fmc & FMC_COMT);
+
+	/* Check acess violations */
+	target_read_u32(target, FLASH_CRIS, &flash_cris);
+	if(flash_cris & (AMASK))
+	{
+		WARNING("Error setting flash page protection,  flash_cris 0x%x", flash_cris);
+		target_write_u32(target, FLASH_CRIS, 0);
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
+		
+	return ERROR_OK;
+}
+
+u8 stellaris_write_code[] = 
+{
+/* Call with :	
+	r0 = buffer address
+	r1 = destination address
+	r2 = bytecount (in) - endaddr (work) 
+	r3 = pFLASH_CTRL_BASE
+	r4 = FLASHWRITECMD
+	r5 = #1
+	r6 = scratch
+	r7
+*/
+	0x07,0x4B,     		/* ldr r3,pFLASH_CTRL_BASE */
+	0x08,0x4C,     		/* ldr r4,FLASHWRITECMD */
+	0x01,0x25,     		/* movs r5, 1 */
+	0x00,0x26,     		/* movs r6, #0 */
+/* mainloop: */
+	0x19,0x60,     		/* str	r1, [r3, #0] */
+	0x87,0x59,     		/* ldr	r7, [r0, r6] */
+	0x5F,0x60,     		/* str	r7, [r3, #4] */
+	0x9C,0x60,     		/* str	r4, [r3, #8] */
+/* waitloop: */
+	0x9F,0x68,     		/* ldr	r7, [r3, #8] */
+	0x2F,0x42,     		/* tst	r7, r5 */
+	0xFC,0xD1,     		/* bne	waitloop */
+	0x04,0x31,     		/* adds	r1, r1, #4 */
+	0x04,0x36,     		/* adds	r6, r6, #4 */
+	0x96,0x42,     		/* cmp	r6, r2 */
+	0xF4,0xD1,     		/* bne	mainloop */
+	0x00,0xBE,     		/* bkpt #0 */
+/* pFLASH_CTRL_BASE: */
+	0x00,0xD0,0x0F,0x40, 	/* .word	0x400FD000 */
+/* FLASHWRITECMD: */
+	0x01,0x00,0x42,0xA4 	/* .word	0xA4420001 */
+};
+
+int stellaris_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 wcount)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	u32 buffer_size = 8192;
+	working_area_t *source;
+	working_area_t *write_algorithm;
+	u32 address = bank->base + offset;
+	reg_param_t reg_params[8];
+	armv7m_algorithm_t armv7m_info;
+	int retval;
+	
+
+	/* flash write code */
+	if (target_alloc_working_area(target, sizeof(stellaris_write_code), &write_algorithm) != ERROR_OK)
+		{
+			WARNING("no working area available, can't do block memory writes");
+			return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+		};
+
+	target_write_buffer(target, write_algorithm->address, sizeof(stellaris_write_code), stellaris_write_code);
+
+	/* memory buffer */
+	while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
+	{
+		buffer_size /= 2;
+		if (buffer_size <= 256)
+		{
+			/* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
+			if (write_algorithm)
+				target_free_working_area(target, write_algorithm);
+			
+			WARNING("no large enough working area available, can't do block memory writes");
+			return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+		}
+	};
+	
+	armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+	armv7m_info.core_mode = ARMV7M_MODE_ANY;
+	armv7m_info.core_state = ARMV7M_STATE_THUMB;
+	
+	init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
+	init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
+	init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
+	init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
+	init_reg_param(&reg_params[4], "r4", 32, PARAM_OUT);
+	init_reg_param(&reg_params[5], "r5", 32, PARAM_OUT);
+	init_reg_param(&reg_params[6], "r6", 32, PARAM_OUT);
+	init_reg_param(&reg_params[7], "r7", 32, PARAM_OUT);
+
+	while (wcount > 0)
+	{
+		u32 thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
+		
+		target_write_buffer(target, source->address, thisrun_count * 4, buffer);
+		
+		buf_set_u32(reg_params[0].value, 0, 32, source->address);
+		buf_set_u32(reg_params[1].value, 0, 32, address);
+		buf_set_u32(reg_params[2].value, 0, 32, 4*thisrun_count);
+		WARNING("Algorithm flash write  %i words to 0x%x, %i remaining",thisrun_count,address, wcount);
+		DEBUG("Algorithm flash write  %i words to 0x%x, %i remaining",thisrun_count,address, wcount);
+		if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, write_algorithm->address, write_algorithm->address + sizeof(stellaris_write_code)-10, 10000, &armv7m_info)) != ERROR_OK)
+		{
+			ERROR("error executing stellaris flash write algorithm");
+			target_free_working_area(target, source);
+			destroy_reg_param(&reg_params[0]);
+			destroy_reg_param(&reg_params[1]);
+			destroy_reg_param(&reg_params[2]);
+			return ERROR_FLASH_OPERATION_FAILED;
+		}
+	
+		buffer += thisrun_count * 4;
+		address += thisrun_count * 4;
+		wcount -= thisrun_count;
+	}
+	
+
+	target_free_working_area(target, write_algorithm);
+	target_free_working_area(target, source);
+	
+	destroy_reg_param(&reg_params[0]);
+	destroy_reg_param(&reg_params[1]);
+	destroy_reg_param(&reg_params[2]);
+	destroy_reg_param(&reg_params[3]);
+	destroy_reg_param(&reg_params[4]);
+	destroy_reg_param(&reg_params[5]);
+	destroy_reg_param(&reg_params[6]);
+	destroy_reg_param(&reg_params[7]);
+	
+	return ERROR_OK;
+}
+
+int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+{
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	target_t *target = stellaris_info->target;
+	u32 dst_min_alignment, wcount, bytes_remaining = count;
+	u32 address = offset;
+	u32 fcr,flash_cris,flash_fmc;
+	u32 retval;
+	
+	if (stellaris_info->target->state != TARGET_HALTED)
+	{
+		return ERROR_TARGET_NOT_HALTED;
+	}
+	
+	if (stellaris_info->did1 == 0)
+	{
+		stellaris_read_part_info(bank);
+	}
+
+	if (stellaris_info->did1 == 0)
+	{
+		WARNING("Cannot identify target as a Stellaris processor");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	if((offset & 3) || (count & 3))
+	{
+		WARNING("offset size must be word aligned");
+		return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+	}
+	
+	if (offset + count > bank->size)
+		return ERROR_FLASH_DST_OUT_OF_BANK;
+
+	/* Configure the flash controller timing */	
+	stellaris_read_clock_info(bank);	
+	stellaris_set_flash_mode(bank,0);
+
+	
+	/* Clear and disable flash programming interrupts */
+	target_write_u32(target, FLASH_CIM, 0);
+	target_write_u32(target, FLASH_MISC, PMISC|AMISC);
+
+	/* multiple words to be programmed? */
+	if (count > 0) 
+	{
+		/* try using a block write */
+		if ((retval = stellaris_write_block(bank, buffer, offset, count/4)) != ERROR_OK)
+		{
+			if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
+			{
+				/* if block write failed (no sufficient working area),
+				 * we use normal (slow) single dword accesses */ 
+				WARNING("couldn't use block writes, falling back to single memory accesses");
+			}
+			else if (retval == ERROR_FLASH_OPERATION_FAILED)
+			{
+				/* if an error occured, we examine the reason, and quit */
+				target_read_u32(target, FLASH_CRIS, &flash_cris);
+				
+				ERROR("flash writing failed with CRIS: 0x%x", flash_cris);
+				return ERROR_FLASH_OPERATION_FAILED;
+			}
+		}
+		else
+		{
+			buffer += count * 4;
+			address += count * 4;
+			count = 0;
+		}
+	}
+
+
+
+	while(count>0)
+	{
+		if (!(address&0xff)) DEBUG("0x%x",address);
+		/* Program one word */
+		target_write_u32(target, FLASH_FMA, address);
+		target_write_buffer(target, FLASH_FMD, 4, buffer);
+		target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
+		//DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE);
+		/* Wait until write complete */
+		do
+		{
+			target_read_u32(target, FLASH_FMC, &flash_fmc);
+		}
+		while(flash_fmc & FMC_WRITE);
+		buffer += 4;
+		address += 4;
+		count -= 4;
+	}
+	/* Check acess violations */
+	target_read_u32(target, FLASH_CRIS, &flash_cris);
+	if(flash_cris & (AMASK))
+	{
+		DEBUG("flash_cris 0x%x", flash_cris);
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	return ERROR_OK;
+}
+
+
+int stellaris_probe(struct flash_bank_s *bank)
+{
+	/* we can't probe on an stellaris
+	 * if this is an stellaris, it has the configured flash
+	 */
+	stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
+	
+	if (stellaris_info->did1 == 0)
+	{
+		stellaris_read_part_info(bank);
+	}
+
+	if (stellaris_info->did1 == 0)
+	{
+		WARNING("Cannot identify target as a LMI Stellaris");
+		return ERROR_FLASH_OPERATION_FAILED;
+	}
+	
+	return ERROR_OK;
+}