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/* AVR programming algorithms
Copyright (C) 2009 Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Copyright (C) <2001> <AJ Erasmus> antone@sentechsa.com
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
*/
#include <ctype.h>
#include <string.h>
#include <stdint.h>
#include "progalgavr.h"
const byte ProgAlgAVR::EXTEST = 0x0;
const byte ProgAlgAVR::IDCODE = 0x1;
const byte ProgAlgAVR::SAMPLE_PRELOAD = 0x2;
const byte ProgAlgAVR::PROG_ENABLE = 0x4;
const byte ProgAlgAVR::PROG_COMMANDS = 0x5;
const byte ProgAlgAVR::PROG_PAGELOAD = 0x6;
const byte ProgAlgAVR::PROG_PAGEREAD = 0x7;
const byte ProgAlgAVR::AVR_RESET = 0xc;
const byte ProgAlgAVR::BYPASS = 0xf;
#define DO_ENABLE 0xA370
#define PROG_NOP1 0x2300
#define PROG_NOP2 0x3300
#define CHIP_ERASE_A 0x2380
#define CHIP_ERASE_B 0x3180
#define POLL_CHIP_ERASE 0x3380
#define ENT_FLASH_READ 0x2302
#define LOAD_ADDR_EXT_HIGH 0x0b
#define LOAD_ADDR_HIGH 0x07
#define LOAD_ADDR_LOW 0x03
#define REPEAT_ADDR_LOW 0x33
#define EN_FLASH_READ 0x3200
#define RD_FLASH_HIGH 0x3600
#define RD_FLASH_LOW 0x3700
#define ENT_FLASH_WRITE 0x2310
#define WRITE_PAGE 0x3500
#define POLL_WRITE_PAGE 0x3700
#define ENT_FUSE_READ 0x2304
#define EN_FUSE_READ 0x3a00
#define RD_FUSE_EXT 0x3e00
#define RD_FUSE_HIGH 0x3200
#define RD_FUSE_LOW 0x3600
#define RD_FUSE_LOCK 0x3700
#define ENT_FUSE_WRITE 0x2340
#define LOAD_DATA_LOW_BYTE 0x13
#define ENT_FUSE_WRITE 0x2340
#define WRITE_FUSE_EXT 0x3900
#define POLL_FUSE_EXT 0x3b00
#define WRITE_FUSE_HIGH 0x3500
#define POLL_FUSE_HIGH 0x3700
#define WRITE_FUSE_LOW 0x3100
#define POLL_FUSE_LOW 0x3300
#define ENT_EEPROM_READ 0x2303
#define READ_EEPROM_DUMMY 0x3200
#define READ_EEPROM_BYTE 0x3300
ProgAlgAVR::ProgAlgAVR(Jtag &j, unsigned int flashpagesize)
{
jtag=&j;
fp_size = flashpagesize;
progmode(true);
}
ProgAlgAVR::~ProgAlgAVR()
{
progmode(false); /* in case we forgot*/
}
void ProgAlgAVR::progmode(bool enter)
{
byte rstval[2]={0, 0};
if(enter)
{/* Enter Programming */
rstval[0] = 1;
jtag->shiftIR(&AVR_RESET);
jtag->shiftDR(rstval, 0, 1);
jtag->shortToByteArray(DO_ENABLE, rstval);
jtag->shiftIR(&PROG_ENABLE);
jtag->shiftDR(rstval, 0, 16);
}
else
{
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(PROG_NOP1, rstval);
jtag->shiftDR(rstval, 0, 15);
jtag->shortToByteArray(PROG_NOP2, rstval);
jtag->shiftDR(rstval, 0, 15);
jtag->shortToByteArray(0, rstval);
jtag->shiftIR(&PROG_ENABLE);
jtag->shiftDR(rstval, 0, 16);
jtag->shiftIR(&AVR_RESET);
jtag->shiftDR(rstval, 0, 1);
}
}
int ProgAlgAVR::erase(void)
{
byte cookies[2];
byte o_data[2];
int i;
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(CHIP_ERASE_A , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(CHIP_ERASE_B , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_CHIP_ERASE , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shiftDR(cookies,0, 15);
for (i=0; i<10; i++)
{
jtag->Usleep(1000);
jtag->shiftDR(cookies,o_data, 15);
if(o_data[1] & 0x02)
break;
}
if (1 == 10)
{
fprintf(stderr, "Problem Writing Fuse Extended Byte!!!\r\n");
return 1;
}
return 0;
}
void ProgAlgAVR::read_fuses(byte * fuses)
{
byte cookies[2];
byte o_data[2];
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(ENT_FUSE_READ, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(EN_FUSE_READ, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(RD_FUSE_EXT, cookies);
jtag->shiftDR(cookies,o_data, 15);
fuses[FUSE_EXT]= o_data[0];
jtag->shortToByteArray(RD_FUSE_HIGH, cookies);
jtag->shiftDR(cookies,o_data, 15);
fuses[FUSE_HIGH]= o_data[0];
jtag->shortToByteArray(RD_FUSE_LOW, cookies);
jtag->shiftDR(cookies,o_data, 15);
fuses[FUSE_LOW]= o_data[0];
jtag->shortToByteArray(RD_FUSE_LOCK, cookies);
jtag->shiftDR(cookies,o_data, 15);
fuses[FUSE_LOCK]= o_data[0];
}
int ProgAlgAVR::write_fuses(byte * fuses)
{
byte cookies[2];
byte o_data[2];
int i;
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(ENT_FUSE_WRITE, cookies);
jtag->shiftDR(cookies,0, 15);
if (fuses[FUSE_EXT] != 0xff)
{
cookies[0] = fuses[FUSE_EXT];
cookies[1] = LOAD_DATA_LOW_BYTE;
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_EXT , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(WRITE_FUSE_EXT , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_EXT , cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shiftDR(cookies,0, 15);
for (i=0; i<10; i++)
{
jtag->Usleep(1000);
jtag->shiftDR(cookies,o_data, 15);
if(o_data[1] & 0x02)
break;
}
if (1 == 10)
{
fprintf(stderr, "Problem Writing Fuse Extended Byte!!!\r\n");
return 1;
}
}
if (fuses[FUSE_HIGH] != 0xff)
{
cookies[0] = fuses[FUSE_HIGH];
cookies[1] = LOAD_DATA_LOW_BYTE;
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_HIGH, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(WRITE_FUSE_HIGH, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_HIGH, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shiftDR(cookies,0, 15);
for (i=0; i<10; i++)
{
jtag->Usleep(1000);
jtag->shiftDR(cookies,o_data, 15);
if(o_data[1] & 0x02)
break;
}
if (1 == 10)
{
fprintf(stderr, "Problem Writing Fuse HIGH Byte!!!\r\n");
return 1;
}
}
if (fuses[FUSE_LOW] != 0xff)
{
cookies[0] = fuses[FUSE_LOW];
cookies[1] = LOAD_DATA_LOW_BYTE;
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_LOW, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(WRITE_FUSE_LOW, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray(POLL_FUSE_LOW, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shiftDR(cookies,0, 15);
for (i=0; i<10; i++)
{
jtag->Usleep(1000);
jtag->shiftDR(cookies,o_data, 15);
if(o_data[1] & 0x02)
break;
}
if (1 == 10)
{
fprintf(stderr, "Problem Writing Fuse LOW Byte!!!\r\n");
return 1;
}
}
return 0;
}
void ProgAlgAVR::pageread_flash(unsigned int address, byte * buffer,
unsigned int size)
{
byte cookies[2];
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(ENT_FLASH_READ, cookies);
jtag->shiftDR(cookies,0, 15);
if(address & (fp_size -1) )
fprintf(stderr, "Unalied read access to address 0x%08x\n", address);
if (address >> 17)
{
cookies[0] = (address >> 17) & 0xff;
cookies[1] = LOAD_ADDR_EXT_HIGH;
jtag->shiftDR(cookies,0, 15);
}
cookies[0] = (address >> 9) & 0xff;
cookies[1] = LOAD_ADDR_HIGH;
jtag->shiftDR(cookies,0, 15);
cookies[0] = (address >> 1) & 0xff;;
cookies[1] = LOAD_ADDR_LOW;
jtag->shiftDR(cookies,0, 15);
jtag->shiftIR(&PROG_PAGEREAD);
for(unsigned int i = 0; i<size; i++)
{
jtag->shiftDR(buffer+i, buffer+i, 8, 0, 1);
}
jtag->shiftIR(&PROG_COMMANDS);
jtag->shiftIR(&PROG_COMMANDS);
}
/* Caller is responsible to write whole pages*/
int ProgAlgAVR::pagewrite_flash(unsigned int address, byte * buffer,
unsigned int size)
{
byte cookies[2];
byte o_data[2];
int i;
if(address & (fp_size -1))
fprintf(stderr, "Unalied write access to address 0x%08x\n", address);
if(size != fp_size)
fprintf(stderr, "Size is too small for a full page\n");
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray(ENT_FLASH_WRITE, cookies);
jtag->shiftDR(cookies,0, 15);
if (address >> 17)
{
cookies[0] = (address >> 17) & 0xff;
cookies[1] = LOAD_ADDR_EXT_HIGH;
jtag->shiftDR(cookies,0, 15);
}
cookies[0] = (address >> 9) & 0xff;
cookies[1] = LOAD_ADDR_HIGH;
jtag->shiftDR(cookies,0, 15);
cookies[0] = (address >> 1) & 0xff;;
cookies[1] = LOAD_ADDR_LOW;
jtag->shiftDR(cookies,0, 15);
jtag->shiftIR(&PROG_PAGELOAD);
for(unsigned int i = 0; i<size; i++)
{
jtag->shiftDR(buffer+i, 0, 8);
}
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray( POLL_WRITE_PAGE, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray( WRITE_PAGE, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray( POLL_WRITE_PAGE, cookies);
for (i=0; i<10; i++)
{
jtag->shiftDR(cookies,o_data, 15);
if(o_data[1] & 0x02)
break;
fprintf(stdout,".");
fflush(stderr);
jtag->Usleep(1000);
}
if (1 == 10)
{
fprintf(stderr, "Problem Writing Fuse LOW Byte!!!\r\n");
return 1;
}
return 0;
}
void ProgAlgAVR::read_eeprom(unsigned int address, byte * buffer, unsigned int size)
{
byte cookies[2];
byte o_data[2];
unsigned int i;
jtag->shiftIR(&PROG_COMMANDS);
jtag->shortToByteArray( ENT_EEPROM_READ, cookies);
jtag->shiftDR(cookies,0, 15);
for(i=0; i< size; i++)
{
cookies[0] = ((address+i) >> 8) & 0xff;
cookies[1] = LOAD_ADDR_HIGH;
jtag->shiftDR(cookies,0, 15);
cookies[0] = ((address+i) ) & 0xff;
cookies[1] = LOAD_ADDR_LOW;
jtag->shiftDR(cookies,0, 15);
cookies[0] = ((address+i) ) & 0xff;
cookies[1] = REPEAT_ADDR_LOW;
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray( READ_EEPROM_DUMMY, cookies);
jtag->shiftDR(cookies,0, 15);
jtag->shortToByteArray( READ_EEPROM_BYTE, cookies);
jtag->shiftDR(cookies, o_data, 15);
buffer[i] = o_data[0];
}
}
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