--- /dev/null
+/***************************************************************************
+ * 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(®_params[0], "r0", 32, PARAM_OUT);
+ init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
+ init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
+ init_reg_param(®_params[3], "r3", 32, PARAM_OUT);
+ init_reg_param(®_params[4], "r4", 32, PARAM_OUT);
+ init_reg_param(®_params[5], "r5", 32, PARAM_OUT);
+ init_reg_param(®_params[6], "r6", 32, PARAM_OUT);
+ init_reg_param(®_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(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_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(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+ destroy_reg_param(®_params[3]);
+ destroy_reg_param(®_params[4]);
+ destroy_reg_param(®_params[5]);
+ destroy_reg_param(®_params[6]);
+ destroy_reg_param(®_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;
+}
projects / openocd / commitdiff