/***************************************************************************
* 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>
#define DID0_VER(did0) ((did0>>28)&0x07)
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_auto_probe(struct flash_bank_s *bank);
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);
int stellaris_read_part_info(struct flash_bank_s *bank);
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);
int stellaris_read_part_info(struct flash_bank_s *bank);
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,
.auto_probe = stellaris_auto_probe,
.erase_check = stellaris_erase_check,
.protect_check = stellaris_protect_check,
.info = stellaris_info
};
struct {
u32 partno;
char *partname;
} StellarisParts[] =
{
{0x01,"LM3S101"},
{0x02,"LM3S102"},
{0x19,"LM3S300"},
{0x11,"LM3S301"},
{0x12,"LM3S310"},
{0x1A,"LM3S308"},
{0x13,"LM3S315"},
{0x14,"LM3S316"},
{0x17,"LM3S317"},
{0x18,"LM3S318"},
{0x15,"LM3S328"},
{0x2A,"LM3S600"},
{0x21,"LM3S601"},
{0x2B,"LM3S608"},
{0x22,"LM3S610"},
{0x23,"LM3S611"},
{0x24,"LM3S612"},
{0x25,"LM3S613"},
{0x26,"LM3S615"},
{0x28,"LM3S617"},
{0x29,"LM3S618"},
{0x27,"LM3S628"},
{0x38,"LM3S800"},
{0x31,"LM3S801"},
{0x39,"LM3S808"},
{0x32,"LM3S811"},
{0x33,"LM3S812"},
{0x34,"LM3S815"},
{0x36,"LM3S817"},
{0x37,"LM3S818"},
{0x35,"LM3S828"},
{0x51,"LM3S2110"},
{0x52,"LM3S2739"},
{0x53,"LM3S2651"},
{0x54,"LM3S2939"},
{0x55,"LM3S2965"},
{0x56,"LM3S2432"},
{0x57,"LM3S2620"},
{0x58,"LM3S2950"},
{0x59,"LM3S2412"},
{0x5A,"LM3S2533"},
{0x61,"LM3S8630"},
{0x62,"LM3S8970"},
{0x63,"LM3S8730"},
{0x64,"LM3S8530"},
{0x65,"LM3S8930"},
{0x71,"LM3S6610"},
{0x72,"LM3S6950"},
{0x73,"LM3S6965"},
{0x74,"LM3S6110"},
{0x75,"LM3S6432"},
{0x76,"LM3S6537"},
{0x77,"LM3S6753"},
{0x78,"LM3S6952"},
{0x82,"LM3S6422"},
{0x83,"LM3S6633"},
{0x84,"LM3S2139"},
{0x85,"LM3S2637"},
{0x86,"LM3S8738"},
{0x88,"LM3S8938"},
{0x89,"LM3S6938"},
{0x8B,"LM3S6637"},
{0x8C,"LM3S8933"},
{0x8D,"LM3S8733"},
{0x8E,"LM3S8538"},
{0x8F,"LM3S2948"},
{0xA1,"LM3S6100"},
{0xA2,"LM3S2410"},
{0xA3,"LM3S6730"},
{0xA4,"LM3S2730"},
{0xA5,"LM3S6420"},
{0xA6,"LM3S8962"},
{0xB3,"LM3S1635"},
{0xB4,"LM3S1850"},
{0xB5,"LM3S1960"},
{0xB7,"LM3S1937"},
{0xB8,"LM3S1968"},
{0xB9,"LM3S1751"},
{0xBA,"LM3S1439"},
{0xBB,"LM3S1512"},
{0xBC,"LM3S1435"},
{0xBD,"LM3S1637"},
{0xBE,"LM3S1958"},
{0xBF,"LM3S1110"},
{0xC0,"LM3S1620"},
{0xC1,"LM3S1150"},
{0xC2,"LM3S1165"},
{0xC3,"LM3S1133"},
{0xC4,"LM3S1162"},
{0xC5,"LM3S1138"},
{0xC6,"LM3S1332"},
{0xC7,"LM3S1538"},
{0xD0,"LM3S6815"},
{0xD1,"LM3S6816"},
{0xD2,"LM3S6915"},
{0xD3,"LM3S6916"},
{0xD4,"LM3S2016"},
{0xD5,"LM3S1615"},
{0xD6,"LM3S1616"},
{0xD7,"LM3S8971"},
{0xD8,"LM3S1108"},
{0xD9,"LM3S1101"},
{0xDA,"LM3S1608"},
{0xDB,"LM3S1601"},
{0xDC,"LM3S1918"},
{0xDD,"LM3S1911"},
{0xDE,"LM3S2108"},
{0xDF,"LM3S2101"},
{0xE0,"LM3S2608"},
{0xE1,"LM3S2601"},
{0xE2,"LM3S2918"},
{0xE3,"LM3S2911"},
{0xE4,"LM3S6118"},
{0xE5,"LM3S6111"},
{0xE6,"LM3S6618"},
{0xE7,"LM3S6611"},
{0xE8,"LM3S6918"},
{0xE9,"LM3S6911"},
{0,"Unknown part"}
};
char * StellarisClassname[2] =
{
"Sandstorm",
"Fury"
};
/***************************************************************************
* openocd command interface *
***************************************************************************/
/* flash_bank stellaris <base> <size> 0 0 <target#>
*/
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";
/* 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, device_class;
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;
}
if (DID0_VER(stellaris_info->did0)>0)
{
device_class = (stellaris_info->did0>>16)&0xFF;
}
else
{
device_class = 0;
}
printed = snprintf(buf, buf_size, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
device_class, StellarisClassname[device_class], stellaris_info->target_name,
'A' + (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)
{
target_t *target = bank->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 = bank->target;
u32 rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
unsigned long 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 = bank->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 = bank->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 = bank->target;
u32 did0,did1, ver, fam, 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);
ver = did0 >> 28;
if((ver != 0) && (ver != 1))
{
WARNING("Unknown did0 version, cannot identify target");
return ERROR_FLASH_OPERATION_FAILED;
}
ver = did1 >> 28;
fam = (did1 >> 24) & 0xF;
if(((ver != 0) && (ver != 1)) || (fam != 0))
{
WARNING("Unknown 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);
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 = bank->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;
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 = bank->target;
if (bank->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 Stellaris");
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_FMA, 0);
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);
/* if device has > 128k, then second erase cycle is needed */
if(stellaris_info->num_pages * stellaris_info->pagesize > 0x20000)
{
target_write_u32(target, FLASH_FMA, 0x20000);
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 fmppe, flash_fmc, flash_cris;
int lockregion;
stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
target_t *target = bank->target;
if (bank->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)
Used registers:
r3 = pFLASH_CTRL_BASE
r4 = FLASHWRITECMD
r5 = #1
r6 = bytes written
r7 = temp reg
*/
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 = bank->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;
DEBUG("(bank=%08X buffer=%08X offset=%08X wcount=%08X)",
(unsigned int)bank, (unsigned int)buffer, offset, wcount);
/* 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)
{
DEBUG("called target_alloc_working_area(target=%08X buffer_size=%08X source=%08X)",
(unsigned int)target, buffer_size, (unsigned int)source);
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 = bank->target;
u32 address = offset;
u32 flash_cris,flash_fmc;
u32 retval;
DEBUG("(bank=%08X buffer=%08X offset=%08X count=%08X)",
(unsigned int)bank, (unsigned int)buffer, offset, count);
if (bank->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;
stellaris_info->probed = 0;
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;
}
stellaris_info->probed = 1;
return ERROR_OK;
}
int stellaris_auto_probe(struct flash_bank_s *bank)
{
stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
if (stellaris_info->probed)
return ERROR_OK;
return stellaris_probe(bank);
}