razzor/twiboot
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replace linux application

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This commit is contained in:
Olaf Rempel 2012-02-11 12:44:02 +01:00
parent 9424e20ea7
commit ca2a0a99ae
15 changed files with 2019 additions and 1015 deletions
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4
linux/Makefile
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@ -1,4 +1,5 @@
TARGET = twiboot TARGET = twiboot
TARGET2 = mpmboot
CFLAGS = -Wall -Wno-unused-result -O2 -MMD -MP -MF $(*F).d CFLAGS = -Wall -Wno-unused-result -O2 -MMD -MP -MF $(*F).d
@ -11,12 +12,13 @@ all: $(TARGET)
$(TARGET): $(SRC:.c=.o) $(TARGET): $(SRC:.c=.o)
@echo " Linking file: $@" @echo " Linking file: $@"
@$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS) > /dev/null @$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS) > /dev/null
@ln -sf $@ $(TARGET2)
%.o: %.c %.o: %.c
@echo " Building file: $<" @echo " Building file: $<"
@$(CC) -c $(CFLAGS) $< -o $@ @$(CC) -c $(CFLAGS) $< -o $@
clean: clean:
rm -rf $(TARGET) *.o *.d rm -rf $(TARGET) $(TARGET2) *.o *.d
-include $(shell find . -name \*.d 2> /dev/null) -include $(shell find . -name \*.d 2> /dev/null)

52
linux/chipinfo_avr.c Normal file
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@ -0,0 +1,52 @@
/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdint.h>
#include "chipinfo_avr.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
struct chipinfo {
uint8_t sig[3];
const char name[16];
};
static struct chipinfo chips[] = {
{ { 0x1E, 0x93, 0x07 }, "AVR Mega 8" },
{ { 0x1E, 0x93, 0x0A }, "AVR Mega 88" },
{ { 0x1E, 0x94, 0x06 }, "AVR Mega 168" },
{ { 0x1E, 0x95, 0x02 }, "AVR Mega 32" },
};
const char * chipinfo_get_avr_name(const uint8_t *sig)
{
int i;
for (i = 0; i < ARRAY_SIZE(chips); i++) {
struct chipinfo *chip = &chips[i];
if (chip->sig[0] == sig[0] && chip->sig[1] == sig[1] && chip->sig[2] == sig[2])
return chip->name;
}
return "unknown";
}

8
linux/chipinfo_avr.h Normal file
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@ -0,0 +1,8 @@
#ifndef _CHIPINFO_H_
#define _CHIPINFO_H_
#include <stdint.h>
const char * chipinfo_get_avr_name(const uint8_t *sig);
#endif /* _CHIPINFO_H_ */

50
linux/filedata.c
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@ -1,21 +1,21 @@
/*************************************************************************** /***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel * * Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de * * razzor@kopf-tisch.de *
* * * *
* This program is free software; you can redistribute it and/or modify * * 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 * * it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; version 2 of the License, * * the Free Software Foundation; version 2 of the License, *
* * * *
* This program is distributed in the hope that it will be useful, * * This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of * * but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. * * GNU General Public License for more details. *
* * * *
* You should have received a copy of the GNU General Public License * * You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the * * along with this program; if not, write to the *
* Free Software Foundation, Inc., * * Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/ ***************************************************************************/
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <unistd.h> #include <unistd.h>
@ -31,18 +31,18 @@
#define FILETYPE_BINARY 1 #define FILETYPE_BINARY 1
#define FILETYPE_INTELHEX 2 #define FILETYPE_INTELHEX 2
int dbuf_alloc(struct databuf **dbuf, uint32_t size) struct databuf * dbuf_alloc(uint32_t size)
{ {
*dbuf = malloc(sizeof(struct databuf) + size); struct databuf *dbuf = malloc(sizeof(struct databuf) + size);
if (*dbuf == NULL) { if (dbuf == NULL) {
perror("dbuf_alloc"); perror("dbuf_alloc");
return -1; return NULL;
} }
memset((*dbuf)->data, 0xFF, size); memset(dbuf->data, 0xFF, size);
(*dbuf)->size = size; dbuf->size = size;
(*dbuf)->length = 0; dbuf->length = 0;
return 0; return dbuf;
} }
void dbuf_free(struct databuf *dbuf) void dbuf_free(struct databuf *dbuf)

2
linux/filedata.h
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@ -9,7 +9,7 @@ struct databuf {
uint8_t data[0]; uint8_t data[0];
}; };
int dbuf_alloc(struct databuf **dbuf, uint32_t size); struct databuf * dbuf_alloc(uint32_t size);
void dbuf_free(struct databuf *dbuf); void dbuf_free(struct databuf *dbuf);
int file_getsize(const char *filename, uint32_t *size); int file_getsize(const char *filename, uint32_t *size);

635
linux/mpm.c Normal file
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@ -0,0 +1,635 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <sys/time.h>
#include "chipinfo_avr.h"
#include "multiboot.h"
#include "optarg.h"
#define READ_BLOCK_SIZE 256 /* bytes in one flash/eeprom read request */
#define WRITE_BLOCK_SIZE 16 /* bytes in one eeprom write request */
#define CMD_SWITCH_APPLICATION 0x01
#define CMD_GET_BOOTLOADER_VERSION 0x02
#define CMD_GET_CHIP_INFO 0x03
#define CMD_READ_MEMORY 0x11
#define CMD_WRITE_MEMORY 0x12
#define CAUSE_SUCCESS 0x00
#define CAUSE_COMMAND_NOT_SUPPORTED 0xF0
#define CAUSE_INVALID_PARAMETER 0xF1
#define CAUSE_UNSPECIFIED_ERROR 0xFF
/* CMD_SWITCH_APPLICATION parameter */
#define BOOTTYPE_BOOTLOADER 0x00
#define BOOTTYPE_APPLICATION 0x80
#define MEMTYPE_FLASH 0x01
#define MEMTYPE_EEPROM 0x02
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
struct multiboot_ops mpm_ops;
struct mpm_privdata {
char *device;
int fd;
int connected;
int address;
int flashsize;
int flashpage;
int eepromsize;
struct termios oldtio;
};
static struct option mpm_optargs[] = {
{"address", 1, 0, 'a'}, /* -a <addr> */
{"device", 1, 0, 'd'}, /* [ -d <device> ] */
};
static int mpm_optarg_cb(int val, const char *arg, void *privdata)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)privdata;
switch (val) {
case 'a': /* address */
{
char *endptr;
mpm->address = strtol(arg, &endptr, 16);
if (*endptr != '\0' || mpm->address < 0x01 || mpm->address > 0x7F) {
fprintf(stderr, "invalid address: '%s'\n", arg);
return -1;
}
}
break;
case 'd': /* device */
{
if (mpm->device != NULL) {
fprintf(stderr, "invalid device: '%s'\n", optarg);
return -1;
}
mpm->device = strdup(optarg);
if (mpm->device == NULL) {
perror("strdup()");
return -1;
}
}
break;
case 'h':
case '?': /* error */
fprintf(stderr, "Usage: mpmboot [options]\n"
" -a <address> - selects mpm address (0x01 - 0xFF)\n"
" -d <device> - selects mpm device\n"
" -r <flash|eeprom>:<file> - reads flash/eeprom to file (.bin | .hex | -)\n"
" -w <flash|eeprom>:<file> - write flash/eeprom from file (.bin | .hex)\n"
" -n - disable verify after write\n"
" -p <0|1|2> - progress bar mode\n"
"\n"
"Example: mpmboot -d /dev/ttyUSB0 -a 0x22 -w flash:blmc.hex -w flash:blmc_eeprom.hex\n"
"\n");
return -1;
default:
return 1;
}
return 0;
}
static struct multiboot * mpm_alloc(void)
{
struct multiboot * mboot = malloc(sizeof(struct multiboot));
if (mboot == NULL)
return NULL;
memset(mboot, 0x00, sizeof(struct multiboot));
mboot->ops = &mpm_ops;
struct mpm_privdata *mpm = malloc(sizeof(struct mpm_privdata));
if (mpm == NULL) {
free(mboot);
return NULL;
}
memset(mpm, 0x00, sizeof(struct mpm_privdata));
mpm->device = NULL;
mpm->address = 0;
optarg_register(mpm_optargs, ARRAY_SIZE(mpm_optargs), mpm_optarg_cb, (void *)mpm);
mboot->privdata = mpm;
return mboot;
}
static void mpm_free(struct multiboot *mboot)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
if (mpm->device != NULL)
free(mpm->device);
free(mpm);
free(mboot);
}
static int mpm_get_memtype(struct multiboot *mboot, const char *memname)
{
if (strcmp(memname, "flash") == 0)
return MEMTYPE_FLASH;
else if (strcmp(memname, "eeprom") == 0)
return MEMTYPE_EEPROM;
return -1;
}
static int mpm_get_memsize(struct multiboot *mboot, int memtype)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
if (!mpm->connected)
return 0;
switch (memtype) {
case MEMTYPE_FLASH:
return mpm->flashsize;
case MEMTYPE_EEPROM:
return mpm->eepromsize;
default:
return 0;
}
}
static int mpm_send(struct mpm_privdata *mpm, uint8_t command, uint8_t *data, int length)
{
struct termios tio;
if (tcgetattr(mpm->fd, &tio) < 0) {
perror("tcgetattr(tio)");
return -1;
}
tio.c_cflag |= PARODD;
if (tcsetattr(mpm->fd, TCSAFLUSH, &tio) < 0) {
perror("tcsetattr(tio)");
return -1;
}
// usleep(5000);
uint8_t address = mpm->address;
if (write(mpm->fd, &address, sizeof(address)) != sizeof(address)) {
perror("write(address)");
return -1;
}
usleep(500);
tio.c_cflag &= ~(PARODD);
if (tcsetattr(mpm->fd, TCSAFLUSH, &tio) < 0) {
perror("tcsetattr(tio)");
return -1;
}
uint8_t header[3];
header[0] = command;
header[1] = (length >> 8) & 0xFF;
header[2] = length & 0xFF;
if (write(mpm->fd, header, sizeof(header)) != sizeof(header)) {
perror("write(header)");
return -1;
}
if (data != NULL && length != 0) {
if (write(mpm->fd, data, length) != length) {
perror("write(data)");
return -1;
}
}
return 0;
}
static int myread(int fd, void *data, int size)
{
int pos = 0;
while (1) {
fd_set fdset;
struct timeval timeout = { .tv_sec = 1, .tv_usec = 0 };
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
int ret = select(fd +1, &fdset, NULL, NULL, &timeout);
if (ret == -1) {
perror("select");
return -1;
} else if (ret == 0) {
break;
} else if (FD_ISSET(fd, &fdset)) {
int len = read(fd, data + pos, size - pos);
if (len < 0) {
return -1;
} else {
pos += len;
if (pos == size) {
break;
}
}
}
}
return pos;
}
static int mpm_recv(struct mpm_privdata *mpm, uint8_t command, uint8_t *cause, uint8_t *buffer, uint16_t buffersize)
{
int len;
uint8_t header[4];
len = myread(mpm->fd, header, sizeof(header));
if (len != sizeof(header)) {
fprintf(stderr, "short read() from device (not addressed?)\n");
return -1;
}
if (header[0] != command) {
fprintf(stderr, "invalid command response (0x%02x != 0x%02x)\n", header[0], command);
return -1;
}
*cause = header[1];
uint16_t length = (header[2] << 8) | header[3];
// printf("mpm_recv() cmd=0x%02x cause=0x%02x length=0x%04x\n", command, *cause, length);
uint16_t bufferpos = 0;
while (length > 0) {
/* free space in output buffer? */
if ((bufferpos < buffersize) && (buffer != NULL)) {
uint16_t size = MIN(buffersize - bufferpos, length);
len = myread(mpm->fd, buffer + bufferpos, size);
if (len <= 0) {
fprintf(stderr, "short read() from device (%d != %d)\n", len, size);
return -1;
}
bufferpos += len;
length -= len;
} else {
uint8_t dummy[256];
/* no space in output buffer, but device still sends data -> do dummy read */
uint16_t size = MIN(sizeof(dummy), length);
len = myread(mpm->fd, dummy, size);
if (len <= 0) {
fprintf(stderr, "short read() from device (%d != %d)\n", len, size);
return -1;
}
length -= len;
}
}
return bufferpos;
}
static void mpm_close_device(struct mpm_privdata *mpm)
{
/* delay close() / tcsetattr() */
usleep(100000);
tcsetattr(mpm->fd, TCSANOW, &mpm->oldtio);
close(mpm->fd);
}
static int mpm_open_device(struct mpm_privdata *mpm)
{
mpm->fd = open(mpm->device, O_RDWR | O_NOCTTY | O_CLOEXEC);
if (mpm->fd < 0) {
perror("open()");
return -1;
}
if (tcgetattr(mpm->fd, &mpm->oldtio) < 0) {
perror("tcgetattr(oldtio)");
close(mpm->fd);
return -1;
}
struct termios newtio;
memset(&newtio, 0, sizeof(newtio));
newtio.c_iflag |= IGNBRK;
newtio.c_cflag |= B115200 | CS8 | CLOCAL | CREAD | PARENB | CMSPAR;
newtio.c_cc[VMIN] = 1;
newtio.c_cc[VTIME] = 0;
int err = tcsetattr(mpm->fd, TCSANOW, &newtio);
if (err < 0) {
perror("tcsetattr(newtio)");
close(mpm->fd);
return -1;
}
mpm->connected = 1;
return 0;
}
static int mpm_switch_application(struct mpm_privdata *mpm, uint8_t application)
{
uint8_t data[] = { application };
int ret = mpm_send(mpm, CMD_SWITCH_APPLICATION, data, sizeof(data));
if (ret < 0)
return ret;
uint8_t cause = CAUSE_SUCCESS;
ret = mpm_recv(mpm, CMD_SWITCH_APPLICATION, &cause, NULL, 0);
if (ret < 0)
return ret;
return (cause != CAUSE_SUCCESS);
}
static int mpm_read_version(struct mpm_privdata *mpm, uint8_t *version, uint16_t length)
{
memset(version, 0, length);
int ret = mpm_send(mpm, CMD_GET_BOOTLOADER_VERSION, NULL, 0);
if (ret < 0)
return ret;
uint8_t cause = CAUSE_SUCCESS;
ret = mpm_recv(mpm, CMD_GET_BOOTLOADER_VERSION, &cause, version, length);
if (ret < 0)
return ret;
int i;
for (i = 0; i < length; i++)
version[i] &= ~0x80;
return (cause != CAUSE_SUCCESS);
}
static int mpm_read_chipinfo(struct mpm_privdata *mpm, uint8_t *chipinfo, uint16_t length)
{
int ret = mpm_send(mpm, CMD_GET_CHIP_INFO, NULL, 0);
if (ret < 0)
return ret;
uint8_t cause = CAUSE_SUCCESS;
ret = mpm_recv(mpm, CMD_GET_CHIP_INFO, &cause, chipinfo, length);
if (ret < 0)
return ret;
return (cause != CAUSE_SUCCESS);
}
static int mpm_read_memory(struct mpm_privdata *mpm, uint8_t *buffer, uint16_t size, uint8_t memtype, uint16_t address)
{
uint8_t param[5] = {
memtype,
(address >> 8) & 0xFF,
(address & 0xFF),
(size >> 8) & 0xFF,
(size & 0xFF)
};
int ret = mpm_send(mpm, CMD_READ_MEMORY, param, sizeof(param));
if (ret < 0)
return ret;
uint8_t cause = CAUSE_SUCCESS;
ret = mpm_recv(mpm, CMD_READ_MEMORY, &cause, buffer, size);
if (ret < 0)
return ret;
return (cause != CAUSE_SUCCESS);
}
static int mpm_write_memory(struct mpm_privdata *mpm, uint8_t *buffer, uint16_t size, uint8_t memtype, uint16_t address)
{
int bufsize;
if (memtype == MEMTYPE_FLASH) {
if ((address & (mpm->flashpage -1)) != 0x00) {
fprintf(stderr, "mpm_write_memory(): address 0x%04x not aligned to pagesize 0x%02x\n", address, mpm->flashpage);
return -1;
}
bufsize = 5 + mpm->flashpage;
} else {
bufsize = 5 + size;
}
uint8_t *cmd = malloc(bufsize);
if (cmd == NULL)
return -1;
cmd[0] = memtype;
cmd[1] = (address >> 8) & 0xFF;
cmd[2] = (address & 0xFF);
cmd[3] = ((bufsize -5) >> 8) & 0xFF;
cmd[4] = ((bufsize -5) & 0xFF);
memcpy(cmd +5, buffer, size);
if (memtype == MEMTYPE_FLASH) {
memset(cmd +5 +size, 0xFF, mpm->flashpage - size);
}
int ret = mpm_send(mpm, CMD_WRITE_MEMORY, cmd, bufsize);
if (ret < 0)
return ret;
free(cmd);
uint8_t cause = CAUSE_SUCCESS;
ret = mpm_recv(mpm, CMD_WRITE_MEMORY, &cause, NULL, 0);
if (ret < 0)
return ret;
return (cause != CAUSE_SUCCESS);
}
static int mpm_close(struct multiboot *mboot)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
if (mpm->connected)
mpm_switch_application(mpm, BOOTTYPE_APPLICATION);
mpm_close_device(mpm);
return 0;
}
static int mpm_open(struct multiboot *mboot)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
if (mpm->address == 0) {
fprintf(stderr, "abort: no address given\n");
return -1;
}
if (mpm->device == NULL) {
fprintf(stderr, "abort: no device given\n");
return -1;
}
if (mpm_open_device(mpm) < 0)
return -1;
if (mpm_switch_application(mpm, BOOTTYPE_BOOTLOADER)) {
fprintf(stderr, "failed to switch to bootloader (invalid address?)\n");
mpm_close(mboot);
return -1;
}
/* wait for watchdog and startup time */
usleep(100000);
char version[16];
if (mpm_read_version(mpm, (uint8_t *)version, sizeof(version))) {
fprintf(stderr, "failed to get bootloader version");
mpm_close(mboot);
return -1;
}
uint8_t chipinfo[8];
if (mpm_read_chipinfo(mpm, chipinfo, sizeof(chipinfo))) {
fprintf(stderr, "failed to get bootloader version");
mpm_close(mboot);
return -1;
}
const char *chipname = chipinfo_get_avr_name(chipinfo);
mpm->flashpage = chipinfo[3];
mpm->flashsize = (chipinfo[4] << 8) + chipinfo[5];
mpm->eepromsize = (chipinfo[6] << 8) + chipinfo[7];
printf("device : %-16s (address: 0x%02X)\n", mpm->device, mpm->address);
printf("version : %-16s (sig: 0x%02x 0x%02x 0x%02x => %s)\n", version, chipinfo[0], chipinfo[1], chipinfo[2], chipname);
printf("flash size : 0x%04x / %5d (0x%02x bytes/page)\n", mpm->flashsize, mpm->flashsize, mpm->flashpage);
printf("eeprom size : 0x%04x / %5d\n", mpm->eepromsize, mpm->eepromsize);
return 0;
}
static int mpm_read(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "reading flash" : "reading eeprom";
int pos = 0;
int size = (memtype == MEMTYPE_FLASH) ? mpm->flashsize : mpm->eepromsize;
while (pos < size) {
mboot->progress_cb(progress_msg, pos, size);
int len = MIN(READ_BLOCK_SIZE, size - pos);
if (mpm_read_memory(mpm, dbuf->data + pos, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
pos += len;
}
dbuf->length = pos;
mboot->progress_cb(progress_msg, pos, size);
return 0;
}
static int mpm_write(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "writing flash" : "writing eeprom";
int pos = 0;
while (pos < dbuf->length) {
mboot->progress_cb(progress_msg, pos, dbuf->length);
int len = (memtype == MEMTYPE_FLASH) ? mpm->flashpage : WRITE_BLOCK_SIZE;
len = MIN(len, dbuf->length - pos);
if (mpm_write_memory(mpm, dbuf->data + pos, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
pos += len;
}
mboot->progress_cb(progress_msg, pos, dbuf->length);
return 0;
}
static int mpm_verify(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct mpm_privdata *mpm = (struct mpm_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "verifing flash" : "verifing eeprom";
int pos = 0;
uint8_t comp[READ_BLOCK_SIZE];
while (pos < dbuf->length) {
mboot->progress_cb(progress_msg, pos, dbuf->length);
int len = MIN(READ_BLOCK_SIZE, dbuf->length - pos);
if (mpm_read_memory(mpm, comp, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
if (memcmp(comp, dbuf->data + pos, len) != 0x00) {
mboot->progress_cb(progress_msg, -1, -1);
fprintf(stderr, "verify failed at page 0x%04x!!\n", pos);
return -1;
}
pos += len;
}
dbuf->length = pos;
mboot->progress_cb(progress_msg, pos, dbuf->length);
return 0;
}
struct multiboot_ops mpm_ops = {
.alloc = mpm_alloc,
.free = mpm_free,
.get_memtype = mpm_get_memtype,
.get_memsize = mpm_get_memsize,
.open = mpm_open,
.close = mpm_close,
.read = mpm_read,
.write = mpm_write,
.verify = mpm_verify,
};

320
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/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include "filedata.h"
#include "list.h"
#include "multiboot.h"
#include "optarg.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
#define ACTION_READ 0x01
#define ACTION_WRITE 0x02
struct mboot_action {
struct list_head list;
char *filename;
int memtype;
int mode;
};
static LIST_HEAD(action_list);
static struct option main_optargs[] = {
{"help", 0, 0, 'h'}, /* [ -h ] */
{"progress", 1, 0, 'p'}, /* [ -p <0|1|2> ] */
{"read", 1, 0, 'r'}, /* [ -r <flash|eeprom>:<file.hex> ] */
{"write", 1, 0, 'w'}, /* [ -w <flash|eeprom>:<file.hex> ] */
{"no-verify", 0, 0, 'n'}, /* [ -n ] */
{0, 0, 0, 0}
};
static void progress_mode0_cb(const char *msg, int pos, int size)
{
/* no progress output */
}
static void progress_mode1_cb(const char *msg, int pos, int size)
{
if (pos != -1 && size != -1) {
char stars[50];
int i;
int count = (pos * sizeof(stars) / size);
for (i = 0; i < sizeof(stars); i++)
stars[i] = (i < count) ? '*' : ' ';
printf("%-15s: [%s] (%d)\r", msg, stars, pos);
}
if (pos == size)
printf("\n");
}
static void progress_mode2_cb(const char *msg, int pos, int size)
{
static int old_count;
if (pos != -1 && size != -1) {
if (pos == 0) {
old_count = 0;
printf("%-15s: [", msg);
} else if (pos <=size) {
int i;
int count = (pos * 50 / size);
for (i = old_count; i < count; i++)
printf("*");
old_count = count;
if (pos == size) {
printf("] (%d)\n", pos);
}
}
}
}
static int add_action(struct multiboot *mboot, int mode, const char *arg)
{
struct mboot_action *action = malloc(sizeof(struct mboot_action));
if (action == NULL) {
perror("malloc()");
return -1;
}
char *argcopy = strdup(arg);
if (argcopy == NULL) {
perror("strdup()");
free(action);
return -1;
}
char *tok = strtok(argcopy, ":");
if (tok == NULL) {
fprintf(stderr, "invalid argument: '%s'\n", arg);
free(argcopy);
free(action);
return -1;
}
action->memtype = mboot->ops->get_memtype(mboot, tok);
if (action->memtype == -1) {
fprintf(stderr, "invalid memtype: '%s'\n", tok);
free(argcopy);
free(action);
return -1;
}
tok = strtok(NULL, ":");
if (tok == NULL) {
fprintf(stderr, "invalid argument: '%s'\n", arg);
free(argcopy);
free(action);
return -1;
}
action->filename = strdup(tok);
if (action->filename == NULL) {
perror("strdup()");
free(argcopy);
free(action);
return -1;
}
action->mode = mode;
list_add_tail(&action->list, &action_list);
free(argcopy);
return 0;
}
static int main_optarg_cb(int val, const char *arg, void *privdata)
{
struct multiboot *mboot = (struct multiboot *)privdata;
switch (val) {
case 'r': /* read */
{
if (add_action(mboot, ACTION_READ, arg) < 0)
return -1;
}
break;
case 'w': /* write */
{
if (add_action(mboot, ACTION_WRITE, arg) < 0)
return -1;
}
break;
case 'n': /* no verify after write */
mboot->verify = 0;
break;
case 'p':
{
switch (*arg) {
case '0':
mboot->progress_cb = progress_mode0_cb;
break;
case '1':
mboot->progress_cb = progress_mode1_cb;
break;
case '2':
mboot->progress_cb = progress_mode2_cb;
break;
default:
fprintf(stderr, "invalid progress bar mode: '%s'\n", arg);
return -1;
}
}
break;
}
return 0;
}
int main(int argc, char *argv[])
{
struct multiboot *mboot;
char *progname = strrchr(argv[0], '/');
progname = (progname != NULL) ? (progname +1) : argv[0];
if (strcmp(progname, "twiboot") == 0) {
mboot = twi_ops.alloc();
} else if (strcmp(progname, "mpmboot") == 0) {
mboot = mpm_ops.alloc();
} else {
fprintf(stderr, "invalid progname, use 'twiboot' or 'mpmboot'\n");
return -1;
}
if (mboot == NULL)
return -1;
mboot->verify = 1;
mboot->progress_cb = progress_mode1_cb;
optarg_register(main_optargs, ARRAY_SIZE(main_optargs), main_optarg_cb, (void *)mboot);
int abort = optarg_parse(argc, argv);
if (abort == -1 || mboot->ops->open(mboot) != 0)
return -1;
setbuf(stdout, NULL);
struct mboot_action *action, *tmp;
list_for_each_entry(action, &action_list, list) {
abort = 1;
if (action->mode == ACTION_READ) {
int memsize = mboot->ops->get_memsize(mboot, action->memtype);
if (memsize == 0)
break;
struct databuf *dbuf = dbuf_alloc(memsize);
if (dbuf == NULL)
break;
int result = mboot->ops->read(mboot, dbuf, action->memtype);
if (result != 0) {
fprintf(stderr, "failed to read from device\n");
dbuf_free(dbuf);
break;
}
result = file_write(action->filename, dbuf);
if (result != 0) {
fprintf(stderr, "failed to write file '%s'\n", action->filename);
dbuf_free(dbuf);
break;
}
dbuf_free(dbuf);
abort = 0;
} else if (action->mode == ACTION_WRITE) {
unsigned int size;
int result;
result = file_getsize(action->filename, &size);
if (result != 0)
break;
struct databuf *dbuf = dbuf_alloc(size);
if (dbuf == NULL)
break;
result = file_read(action->filename, dbuf);
if (result != 0) {
fprintf(stderr, "failed to read file '%s'\n", action->filename);
dbuf_free(dbuf);
break;
}
int memsize = mboot->ops->get_memsize(mboot, action->memtype);
if (memsize == 0) {
fprintf(stderr, "invalid memsize: 0x%04x > 0x%04x\n", dbuf->length, memsize);
dbuf_free(dbuf);
break;
}
result = mboot->ops->write(mboot, dbuf, action->memtype);
if (result != 0) {
fprintf(stderr, "failed to write to device\n");
dbuf_free(dbuf);
break;
}
if (mboot->verify) {
result = mboot->ops->verify(mboot, dbuf, action->memtype);
if (result != 0) {
fprintf(stderr, "failed to verify\n");
dbuf_free(dbuf);
break;
}
}
dbuf_free(dbuf);
abort = 0;
}
}
list_for_each_entry_safe(action, tmp, &action_list, list) {
free(action->filename);
free(action);
}
mboot->ops->close(mboot);
mboot->ops->free(mboot);
optarg_free();
return abort;
}

33
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#ifndef _MULTIBOOT_H_
#define _MULTIBOOT_H_
#include <stdint.h>
#include "filedata.h"
struct multiboot {
struct multiboot_ops *ops;
void *privdata;
int verify;
void (* progress_cb)(const char *msg, int pos, int max);
};
struct multiboot_ops {
struct multiboot * (* alloc)(void);
void (* free)(struct multiboot *mboot);
int (* get_memtype)(struct multiboot *mboot, const char *memname);
int (* get_memsize)(struct multiboot *mboot, int memtype);
int (* open)(struct multiboot *mboot);
int (* close)(struct multiboot *mboot);
int (* read)(struct multiboot *mboot, struct databuf *dbuf, int memtype);
int (* verify)(struct multiboot *mboot, struct databuf *dbuf, int memtype);
int (* write)(struct multiboot *mboot, struct databuf *dbuf, int memtype);
};
extern struct multiboot_ops twi_ops;
extern struct multiboot_ops mpm_ops;
#endif /* _MULTIBOOT_H_ */

193
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/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include "list.h"
#include "optarg.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
struct optarg_entry {
struct list_head list;
const struct option *opts;
int count;
int (* parser_cb)(int val, const char *arg, void *privdata);
void *privdata;
};
static LIST_HEAD(option_list);
int optarg_register(const struct option *opts, int count,
int (* parser_cb)(int val, const char *arg, void *privdata),
void *privdata)
{
struct optarg_entry *entry;
entry = malloc(sizeof(struct optarg_entry));
if (entry == NULL)
return -1;
entry->opts = opts; /* TODO: copy? */
entry->count = count;
entry->parser_cb = parser_cb;
entry->privdata = privdata;
list_add_tail(&entry->list, &option_list);
return 0;
}
void optarg_free(void)
{
struct optarg_entry *entry, *entry_tmp;
list_for_each_entry_safe(entry, entry_tmp, &option_list, list) {
list_del(&entry->list);
free(entry);
}
}
static void optarg_getsize(int *opt_count, int *optstring_len)
{
int count = 0;
int length = 0;
struct optarg_entry *entry;
list_for_each_entry(entry, &option_list, list) {
count += entry->count;
int i;
for (i = 0; i < entry->count; i++) {
switch (entry->opts[i].has_arg) {
case 0: /* no arguments */
case 1: /* has argument */
case 2: /* optional argument */
length += entry->opts[i].has_arg +1;
break;
default:
break;
}
}
}
*opt_count = count +1;
*optstring_len = length +1;
}
static void optarg_copy(struct option *opts, char *optstring)
{
struct optarg_entry *entry;
list_for_each_entry(entry, &option_list, list) {
memcpy(opts, entry->opts, sizeof(struct option) * entry->count);
opts += entry->count;
int i;
for (i = 0; i < entry->count; i++) {
switch (entry->opts[i].has_arg) {
case 0: /* no arguments */
*optstring++ = (char)entry->opts[i].val;
break;
case 1: /* has argument */
*optstring++ = (char)entry->opts[i].val;
*optstring++ = ':';
break;
case 2: /* optional argument */
*optstring++ = (char)entry->opts[i].val;
*optstring++ = ':';
*optstring++ = ':';
break;
default:
break;
}
}
}
memset(opts++, 0x00, sizeof(struct option));
*optstring++ = '\0';
}
int optarg_parse(int argc, char * const argv[])
{
struct option *longopts;
char *optstring;
int opt_count;
int optstring_len;
optarg_getsize(&opt_count, &optstring_len);
longopts = malloc(sizeof(struct option) * opt_count);
if (longopts == NULL)
return -1;
optstring = malloc(optstring_len);
if (optstring == NULL) {
free(longopts);
return -1;
}
optarg_copy(longopts, optstring);
int retval = 0;
int val = 0;
while (val != -1 && retval == 0) {
opterr = 1; /* print error message to stderr */
val = getopt_long(argc, argv, optstring, longopts, NULL);
if (val == 0x00) /* variable assigned (not supported) */
continue;
struct optarg_entry *entry;
list_for_each_entry(entry, &option_list, list) {
int ret = entry->parser_cb(val, optarg, entry->privdata);
/* option recognized, with error */
if (ret < 0) {
retval = ret;
break;
/* option recognized, no error */
} else if (ret == 0) {
break;
}
}
if (val == -1) /* parsing completed */
break;
if (val == '?') { /* parsing error */
retval = 1;
break;
}
}
free(optstring);
free(longopts);
return retval;
}

15
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#ifndef _OPTARG_H_
#define _OPTARG_H_
#include <getopt.h>
int optarg_register(const struct option *opts, int count,
int (* parser_cb)(int val, const char *arg, void *privdata),
void *privdata);
void optarg_free(void);
int optarg_parse(int argc, char * const argv[]);
#endif /* _OPTARG_H_ */

2
linux/rules/99-i2c-tiny-usb.rules Normal file
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SUBSYSTEM=="usb", ATTR{product}=="i2c-tiny-usb", RUN+="/sbin/modprobe -b i2c-dev"
SUBSYSTEM=="i2c-dev", DRIVERS=="i2c-tiny-usb", MODE="0660", GROUP="dialout"

329
linux/twb.c
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@ -1,329 +0,0 @@
/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include "filedata.h"
#include "list.h"
#include "twb.h"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
#define READ_BLOCK_SIZE 128 /* bytes in one flash/eeprom read request */
#define WRITE_BLOCK_SIZE 16 /* bytes in one eeprom write request */
/* SLA+R */
#define CMD_WAIT 0x00
#define CMD_READ_VERSION 0x01
#define CMD_READ_MEMORY 0x02
/* SLA+W */
#define CMD_SWITCH_APPLICATION CMD_READ_VERSION
#define CMD_WRITE_MEMORY CMD_READ_MEMORY
/* CMD_SWITCH_APPLICATION parameter */
#define BOOTTYPE_BOOTLOADER 0x00 /* only in APP */
#define BOOTTYPE_APPLICATION 0x80
/* CMD_{READ|WRITE}_* parameter */
#define MEMTYPE_CHIPINFO 0x00
#define MEMTYPE_FLASH 0x01
#define MEMTYPE_EEPROM 0x02
#define MEMTYPE_PARAMETERS 0x03 /* only in APP */
struct chipinfo {
uint8_t sig[3];
const char name[16];
};
static struct chipinfo chips[] = {
{ { 0x1E, 0x93, 0x07 }, "AVR Mega 8" },
{ { 0x1E, 0x93, 0x0A }, "AVR Mega 88" },
{ { 0x1E, 0x94, 0x06 }, "AVR Mega 168" },
};
static const char * twb_get_chipname(uint8_t *sig)
{
int i;
for (i = 0; i < ARRAY_SIZE(chips); i++) {
struct chipinfo *chip = &chips[i];
if (chip->sig[0] == sig[0] && chip->sig[1] == sig[1] && chip->sig[2] == sig[2])
return chip->name;
}
return "unknown";
}
static int twb_switch_application(struct twiboot *twb, uint8_t application)
{
uint8_t cmd[] = { CMD_SWITCH_APPLICATION, application };
return (write(twb->fd, cmd, sizeof(cmd)) != sizeof(cmd));
}
static int twb_read_version(struct twiboot *twb)
{
uint8_t cmd[] = { CMD_READ_VERSION };
if (write(twb->fd, cmd, sizeof(cmd)) != sizeof(cmd))
return -1;
memset(twb->version, 0, sizeof(twb->version));
if (read(twb->fd, twb->version, sizeof(twb->version)) != sizeof(twb->version))
return -1;
int i;
for (i = 0; i < sizeof(twb->version); i++)
twb->version[i] &= ~0x80;
return 0;
}
static int twb_read_memory(struct twiboot *twb, uint8_t *buffer, uint8_t size, uint8_t memtype, uint16_t address)
{
uint8_t cmd[] = { CMD_READ_MEMORY, memtype, (address >> 8) & 0xFF, (address & 0xFF) };
if (write(twb->fd, cmd, sizeof(cmd)) != sizeof(cmd))
return -1;
return (read(twb->fd, buffer, size) != size);
}
static int twb_write_memory(struct twiboot *twb, uint8_t *buffer, uint8_t size, uint8_t memtype, uint16_t address)
{
int bufsize;
if (memtype == MEMTYPE_FLASH) {
if ((address & (twb->pagesize -1)) != 0x00) {
fprintf(stderr, "twb_write_memory(): address 0x%04x not aligned to pagesize 0x%02x\n", address, twb->pagesize);
return -1;
}
bufsize = 4 + twb->pagesize;
} else {
bufsize = 4 + size;
}
uint8_t *cmd = malloc(bufsize);
if (cmd == NULL)
return -1;
cmd[0] = CMD_WRITE_MEMORY;
cmd[1] = memtype;
cmd[2] = (address >> 8) & 0xFF;
cmd[3] = (address & 0xFF);
memcpy(cmd +4, buffer, size);
if (memtype == MEMTYPE_FLASH) {
memset(cmd +4 +size, 0xFF, twb->pagesize - size);
}
int result = write(twb->fd, cmd, bufsize);
free(cmd);
return (result != bufsize);
}
static void twb_close_device(struct twiboot *twb)
{
if (twb->connected)
close(twb->fd);
if (twb->device != NULL)
free(twb->device);
twb->device = NULL;
}
static int twb_open_device(struct twiboot *twb)
{
twb->fd = open(twb->device, O_RDWR);
if (twb->fd < 0) {
fprintf(stderr, "failed to open '%s': %s\n", twb->device, strerror(errno));
return -1;
}
unsigned long funcs;
if (ioctl(twb->fd, I2C_FUNCS, &funcs)) {
perror("ioctl(I2C_FUNCS)");
close(twb->fd);
return -1;
}
if (!(funcs & I2C_FUNC_I2C)) {
fprintf(stderr, "I2C_FUNC_I2C not supported on '%s'!\n", twb->device);
close(twb->fd);
return -1;
}
if (ioctl(twb->fd, I2C_SLAVE, twb->address) < 0) {
fprintf(stderr, "failed to select slave address '%d': %s\n", twb->address, strerror(errno));
close(twb->fd);
return -1;
}
twb->connected = 1;
return 0;
}
int twb_close(struct twiboot *twb)
{
if (twb->connected)
twb_switch_application(twb, BOOTTYPE_APPLICATION);
twb_close_device(twb);
return 0;
}
int twb_open(struct twiboot *twb)
{
if (twb_open_device(twb) != 0)
return -1;
if (twb_switch_application(twb, BOOTTYPE_BOOTLOADER)) {
fprintf(stderr, "failed to switch to bootloader (invalid address?): %s\n", strerror(errno));
twb_close(twb);
return -1;
}
/* wait for watchdog and startup time */
usleep(100000);
if (twb_read_version(twb)) {
fprintf(stderr, "failed to get bootloader version: %s\n", strerror(errno));
twb_close(twb);
return -1;
}
uint8_t chipinfo[8];
if (twb_read_memory(twb, chipinfo, sizeof(chipinfo), MEMTYPE_CHIPINFO, 0x0000)) {
fprintf(stderr, "failed to get chipinfo: %s\n", strerror(errno));
twb_close(twb);
return -1;
}
memcpy(twb->signature, chipinfo, sizeof(twb->signature));
twb->chipname = twb_get_chipname(twb->signature);
twb->pagesize = chipinfo[3];
twb->flashsize = (chipinfo[4] << 8) + chipinfo[5];
twb->eepromsize = (chipinfo[6] << 8) + chipinfo[7];
return 0;
}
int twb_read(struct twiboot *twb, struct databuf *dbuf, int memtype)
{
int pos = 0;
int size = (memtype == MEMTYPE_FLASH) ? twb->flashsize : twb->eepromsize;
while (pos < size) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, size);
int len = MIN(READ_BLOCK_SIZE, size - pos);
if (twb_read_memory(twb, dbuf->data + pos, len, memtype, pos)) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, -1, -1);
return -1;
}
pos += len;
}
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, size);
dbuf->length = pos;
return 0;
}
int twb_write(struct twiboot *twb, struct databuf *dbuf, int memtype)
{
int pos = 0;
while (pos < dbuf->length) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, dbuf->length);
int len = (memtype == MEMTYPE_FLASH) ? twb->pagesize : WRITE_BLOCK_SIZE;
len = MIN(len, dbuf->length - pos);
if (twb_write_memory(twb, dbuf->data + pos, len, memtype, pos)) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, -1, -1);
return -1;
}
pos += len;
}
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, dbuf->length);
return 0;
}
int twb_verify(struct twiboot *twb, struct databuf *dbuf, int memtype)
{
int pos = 0;
uint8_t comp[READ_BLOCK_SIZE];
while (pos < dbuf->length) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, dbuf->length);
int len = MIN(READ_BLOCK_SIZE, dbuf->length - pos);
if (twb_read_memory(twb, comp, len, memtype, pos)) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, -1, -1);
return -1;
}
if (memcmp(comp, dbuf->data + pos, len) != 0x00) {
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, -1, -1);
fprintf(stderr, "verify failed at page 0x%04x!!\n", pos);
return -1;
}
pos += len;
}
if (twb->progress_cb)
twb->progress_cb(twb->progress_msg, pos, dbuf->length);
dbuf->length = pos;
return 0;
}

31
linux/twb.h
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#ifndef _TWB_H_
#define _TWB_H_
#include <stdint.h>
struct twiboot {
char *device;
uint8_t address;
int fd;
int connected;
char version[16];
uint8_t signature[3];
const char *chipname;
uint8_t pagesize;
uint16_t flashsize;
uint16_t eepromsize;
void (* progress_cb)(const char *msg, int pos, int max);
char *progress_msg;
};
int twb_open(struct twiboot *twb);
int twb_close(struct twiboot *twb);
int twb_read(struct twiboot *twb, struct databuf *dbuf, int memtype);
int twb_verify(struct twiboot *twb, struct databuf *dbuf, int memtype);
int twb_write(struct twiboot *twb, struct databuf *dbuf, int memtype);
#endif /* _TWIBOOT_H_ */

469
linux/twi.c Normal file
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/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include "chipinfo_avr.h"
#include "filedata.h"
#include "list.h"
#include "multiboot.h"
#include "optarg.h"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*x))
#define TWI_DEFAULT_DEVICE "/dev/i2c-0"
#define READ_BLOCK_SIZE 128 /* bytes in one flash/eeprom read request */
#define WRITE_BLOCK_SIZE 16 /* bytes in one eeprom write request */
/* SLA+R */
#define CMD_WAIT 0x00
#define CMD_READ_VERSION 0x01
#define CMD_READ_MEMORY 0x02
/* SLA+W */
#define CMD_SWITCH_APPLICATION CMD_READ_VERSION
#define CMD_WRITE_MEMORY CMD_READ_MEMORY
/* CMD_SWITCH_APPLICATION parameter */
#define BOOTTYPE_BOOTLOADER 0x00 /* only in APP */
#define BOOTTYPE_APPLICATION 0x80
/* CMD_{READ|WRITE}_* parameter */
#define MEMTYPE_CHIPINFO 0x00
#define MEMTYPE_FLASH 0x01
#define MEMTYPE_EEPROM 0x02
#define MEMTYPE_PARAMETERS 0x03 /* only in APP */
struct multiboot_ops twi_ops;
struct twi_privdata {
char *device;
uint8_t address;
int fd;
int connected;
uint8_t pagesize;
uint16_t flashsize;
uint16_t eepromsize;
};
static struct option twi_optargs[] = {
{"address", 1, 0, 'a'}, /* -a <addr> */
{"device", 1, 0, 'd'}, /* [ -d <device> ] */
};
static int twi_switch_application(struct twi_privdata *twi, uint8_t application)
{
uint8_t cmd[] = { CMD_SWITCH_APPLICATION, application };
return (write(twi->fd, cmd, sizeof(cmd)) != sizeof(cmd));
}
static int twi_read_version(struct twi_privdata *twi, char *version, int length)
{
uint8_t cmd[] = { CMD_READ_VERSION };
if (write(twi->fd, cmd, sizeof(cmd)) != sizeof(cmd))
return -1;
memset(version, 0, length);
if (read(twi->fd, version, length) != length)
return -1;
int i;
for (i = 0; i < length; i++)
version[i] &= ~0x80;
return 0;
}
static int twi_read_memory(struct twi_privdata *twi, uint8_t *buffer, uint8_t size, uint8_t memtype, uint16_t address)
{
uint8_t cmd[] = { CMD_READ_MEMORY, memtype, (address >> 8) & 0xFF, (address & 0xFF) };
if (write(twi->fd, cmd, sizeof(cmd)) != sizeof(cmd))
return -1;
return (read(twi->fd, buffer, size) != size);
}
static int twi_write_memory(struct twi_privdata *twi, uint8_t *buffer, uint8_t size, uint8_t memtype, uint16_t address)
{
int bufsize;
if (memtype == MEMTYPE_FLASH) {
if ((address & (twi->pagesize -1)) != 0x00) {
fprintf(stderr, "twi_write_memory(): address 0x%04x not aligned to pagesize 0x%02x\n", address, twi->pagesize);
return -1;
}
bufsize = 4 + twi->pagesize;
} else {
bufsize = 4 + size;
}
uint8_t *cmd = malloc(bufsize);
if (cmd == NULL)
return -1;
cmd[0] = CMD_WRITE_MEMORY;
cmd[1] = memtype;
cmd[2] = (address >> 8) & 0xFF;
cmd[3] = (address & 0xFF);
memcpy(cmd +4, buffer, size);
if (memtype == MEMTYPE_FLASH) {
memset(cmd +4 +size, 0xFF, twi->pagesize - size);
}
int result = write(twi->fd, cmd, bufsize);
free(cmd);
return (result != bufsize);
}
static void twi_close_device(struct twi_privdata *twi)
{
if (twi->connected)
close(twi->fd);
twi->connected = 0;
}
static int twi_open_device(struct twi_privdata *twi)
{
twi->fd = open(twi->device, O_RDWR);
if (twi->fd < 0) {
fprintf(stderr, "failed to open '%s': %s\n", twi->device, strerror(errno));
return -1;
}
unsigned long funcs;
if (ioctl(twi->fd, I2C_FUNCS, &funcs)) {
perror("ioctl(I2C_FUNCS)");
close(twi->fd);
return -1;
}
if (!(funcs & I2C_FUNC_I2C)) {
fprintf(stderr, "I2C_FUNC_I2C not supported on '%s'!\n", twi->device);
close(twi->fd);
return -1;
}
if (ioctl(twi->fd, I2C_SLAVE, twi->address) < 0) {
fprintf(stderr, "failed to select slave address '%d': %s\n", twi->address, strerror(errno));
close(twi->fd);
return -1;
}
twi->connected = 1;
return 0;
}
static int twi_close(struct multiboot *mboot)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
if (twi->connected)
twi_switch_application(twi, BOOTTYPE_APPLICATION);
twi_close_device(twi);
return 0;
}
static int twi_open(struct multiboot *mboot)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
if (twi->address == 0) {
fprintf(stderr, "abort: no address given\n");
return -1;
}
if (twi->device == NULL) {
twi->device = strdup(TWI_DEFAULT_DEVICE);
if (twi->device == NULL) {
perror("strdup()");
return -1;
}
}
if (twi_open_device(twi) != 0)
return -1;
if (twi_switch_application(twi, BOOTTYPE_BOOTLOADER)) {
fprintf(stderr, "failed to switch to bootloader (invalid address?): %s\n", strerror(errno));
twi_close(mboot);
return -1;
}
/* wait for watchdog and startup time */
usleep(100000);
char version[16];
if (twi_read_version(twi, version, sizeof(version))) {
fprintf(stderr, "failed to get bootloader version: %s\n", strerror(errno));
twi_close(mboot);
return -1;
}
uint8_t chipinfo[8];
if (twi_read_memory(twi, chipinfo, sizeof(chipinfo), MEMTYPE_CHIPINFO, 0x0000)) {
fprintf(stderr, "failed to get chipinfo: %s\n", strerror(errno));
twi_close(mboot);
return -1;
}
const char *chipname = chipinfo_get_avr_name(chipinfo);
twi->pagesize = chipinfo[3];
twi->flashsize = (chipinfo[4] << 8) + chipinfo[5];
twi->eepromsize = (chipinfo[6] << 8) + chipinfo[7];
printf("device : %-16s (address: 0x%02X)\n", twi->device, twi->address);
printf("version : %-16s (sig: 0x%02x 0x%02x 0x%02x => %s)\n", version, chipinfo[0], chipinfo[1], chipinfo[2], chipname);
printf("flash size : 0x%04x / %5d (0x%02x bytes/page)\n", twi->flashsize, twi->flashsize, twi->pagesize);
printf("eeprom size : 0x%04x / %5d\n", twi->eepromsize, twi->eepromsize);
return 0;
}
static int twi_read(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "reading flash" : "reading eeprom";
int pos = 0;
int size = (memtype == MEMTYPE_FLASH) ? twi->flashsize : twi->eepromsize;
while (pos < size) {
mboot->progress_cb(progress_msg, pos, size);
int len = MIN(READ_BLOCK_SIZE, size - pos);
if (twi_read_memory(twi, dbuf->data + pos, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
pos += len;
}
dbuf->length = pos;
mboot->progress_cb(progress_msg, pos, size);
return 0;
}
static int twi_write(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "writing flash" : "writing eeprom";
int pos = 0;
while (pos < dbuf->length) {
mboot->progress_cb(progress_msg, pos, dbuf->length);
int len = (memtype == MEMTYPE_FLASH) ? twi->pagesize : WRITE_BLOCK_SIZE;
len = MIN(len, dbuf->length - pos);
if (twi_write_memory(twi, dbuf->data + pos, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
pos += len;
}
mboot->progress_cb(progress_msg, pos, dbuf->length);
return 0;
}
static int twi_verify(struct multiboot *mboot, struct databuf *dbuf, int memtype)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
char *progress_msg = (memtype == MEMTYPE_FLASH) ? "verifing flash" : "verifing eeprom";
int pos = 0;
uint8_t comp[READ_BLOCK_SIZE];
while (pos < dbuf->length) {
mboot->progress_cb(progress_msg, pos, dbuf->length);
int len = MIN(READ_BLOCK_SIZE, dbuf->length - pos);
if (twi_read_memory(twi, comp, len, memtype, pos)) {
mboot->progress_cb(progress_msg, -1, -1);
return -1;
}
if (memcmp(comp, dbuf->data + pos, len) != 0x00) {
mboot->progress_cb(progress_msg, -1, -1);
fprintf(stderr, "verify failed at page 0x%04x!!\n", pos);
return -1;
}
pos += len;
}
dbuf->length = pos;
mboot->progress_cb(progress_msg, pos, dbuf->length);
return 0;
}
static int twi_optarg_cb(int val, const char *arg, void *privdata)
{
struct twi_privdata *twi = (struct twi_privdata *)privdata;
switch (val) {
case 'a': /* address */
{
char *endptr;
twi->address = strtol(arg, &endptr, 16);
if (*endptr != '\0' || twi->address < 0x01 || twi->address > 0x7F) {
fprintf(stderr, "invalid address: '%s'\n", arg);
return -1;
}
}
break;
case 'd': /* device */
{
if (twi->device != NULL) {
fprintf(stderr, "invalid device: '%s'\n", optarg);
return -1;
}
twi->device = strdup(optarg);
if (twi->device == NULL) {
perror("strdup()");
return -1;
}
}
break;
case 'h':
case '?': /* error */
fprintf(stderr, "Usage: twiboot [options]\n"
" -a <address> - selects i2c address (0x01 - 0x7F)\n"
" -d <device> - selects i2c device (default: /dev/i2c-0)\n"
" -r <flash|eeprom>:<file> - reads flash/eeprom to file (.bin | .hex | -)\n"
" -w <flash|eeprom>:<file> - write flash/eeprom from file (.bin | .hex)\n"
" -n - disable verify after write\n"
" -p <0|1|2> - progress bar mode\n"
"\n"
"Example: twiboot -a 0x22 -w flash:blmc.hex -w flash:blmc_eeprom.hex\n"
"\n");
return -1;
default:
return 1;
}
return 0;
}
static struct multiboot * twi_alloc(void)
{
struct multiboot * mboot = malloc(sizeof(struct multiboot));
if (mboot == NULL)
return NULL;
memset(mboot, 0x00, sizeof(struct multiboot));
mboot->ops = &twi_ops;
struct twi_privdata *twi = malloc(sizeof(struct twi_privdata));
if (twi == NULL) {
free(mboot);
return NULL;
}
memset(twi, 0x00, sizeof(struct twi_privdata));
twi->device = NULL;
twi->address = 0;
optarg_register(twi_optargs, ARRAY_SIZE(twi_optargs), twi_optarg_cb, (void *)twi);
mboot->privdata = twi;
return mboot;
}
static void twi_free(struct multiboot *mboot)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
if (twi->device != NULL)
free(twi->device);
free(twi);
free(mboot);
}
static int twi_get_memtype(struct multiboot *mboot, const char *memname)
{
if (strcmp(memname, "flash") == 0)
return MEMTYPE_FLASH;
else if (strcmp(memname, "eeprom") == 0)
return MEMTYPE_EEPROM;
return -1;
}
static int twi_get_memsize(struct multiboot *mboot, int memtype)
{
struct twi_privdata *twi = (struct twi_privdata *)mboot->privdata;
if (!twi->connected)
return 0;
switch (memtype) {
case MEMTYPE_FLASH:
return twi->flashsize;
case MEMTYPE_EEPROM:
return twi->eepromsize;
default:
return 0;
}
}
struct multiboot_ops twi_ops = {
.alloc = twi_alloc,
.free = twi_free,
.get_memtype = twi_get_memtype,
.get_memsize = twi_get_memsize,
.open = twi_open,
.close = twi_close,
.read = twi_read,
.write = twi_write,
.verify = twi_verify,
};

365
linux/twiboot.c
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/***************************************************************************
* Copyright (C) 10/2010 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* 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; version 2 of the License, *
* *
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include "filedata.h"
#include "list.h"
#include "twb.h"
#define OP_MODE_READ 0x01
#define OP_MODE_WRITE 0x02
#define OP_TYPE_FLASH 0x01
#define OP_TYPE_EEPROM 0x02
struct operation {
struct list_head list;
char *filename;
int flags;
int mode;
int memtype;
};
static LIST_HEAD(operation_list);
static struct option opts[] = {
{"address", 1, 0, 'a'}, // -a <addr>
{"device", 1, 0, 'd'}, // [ -d <device> ]
{"help", 0, 0, 'h'}, // [ -h ]
{"progress", 1, 0, 'p'}, // [ -p <0|1|2> ]
{"read", 1, 0, 'r'}, // [ -r <flash|eeprom>:<file.hex> ]
{"write", 1, 0, 'w'}, // [ -w <flash|eeprom>:<file.hex> ]
{"no-verify", 0, 0, 'n'}, // [ -n ]
{0, 0, 0, 0}
};
static struct operation * alloc_operation(const char *arg)
{
struct operation *op = malloc(sizeof(struct operation));
if (op == NULL) {
perror("malloc()");
return NULL;
}
if (strncmp(arg, "flash:", 6) == 0) {
op->memtype = OP_TYPE_FLASH;
op->filename = strdup(arg + 6);
} else if (strncmp(arg, "eeprom:", 7) == 0) {
op->memtype = OP_TYPE_EEPROM;
op->filename = strdup(arg + 7);
} else {
fprintf(stderr, "invalid memtype: '%s'\n", arg);
return NULL;
}
return op;
}
static void progress_mode1_cb(const char *msg, int pos, int size)
{
if (pos != -1 && size != -1) {
char stars[50];
int i;
int count = (pos * sizeof(stars) / size);
for (i = 0; i < sizeof(stars); i++)
stars[i] = (i < count) ? '*' : ' ';
printf("%-15s: [%s] (%d)\r", msg, stars, pos);
}
if (pos == size)
printf("\n");
}
static void progress_mode2_cb(const char *msg, int pos, int size)
{
static int old_count;
if (pos != -1 && size != -1) {
if (pos == 0) {
old_count = 0;
printf("%-15s: [", msg);
} else if (pos <=size) {
int i;
int count = (pos * 50 / size);
for (i = old_count; i < count; i++)
printf("*");
old_count = count;
if (pos == size) {
printf("] (%d)\n", pos);
}
}
}
}
int main(int argc, char *argv[])
{
struct twiboot twb;
int verify = 1, progress = 1;
memset(&twb, 0, sizeof(struct twiboot));
int arg = 0, code = 0, abort = 0;
while (code != -1) {
code = getopt_long(argc, argv, "a:d:hnp:r:w:", opts, &arg);
switch (code) {
case 'a': /* address */
{
char *endptr;
twb.address = strtol(optarg, &endptr, 16);
if (*endptr != '\0' || twb.address < 0x01 || twb.address > 0x7F) {
fprintf(stderr, "invalid address: '%s'\n", optarg);
abort = 1;
break;
}
break;
}
case 'd': /* device */
if (twb.device != NULL) {
fprintf(stderr, "invalid device: '%s'\n", optarg);
abort = 1;
break;
}
twb.device = strdup(optarg);
if (twb.device == NULL) {
perror("strdup()");
abort = 1;
break;
}
break;
case 'r': /* read */
{
struct operation *op = alloc_operation(optarg);
if (op != NULL) {
op->mode = OP_MODE_READ;
list_add_tail(&op->list, &operation_list);
} else {
abort = 1;
}
break;
}
case 'w': /* write */
{
struct operation *op = alloc_operation(optarg);
if (op != NULL) {
op->mode = OP_MODE_WRITE;
list_add_tail(&op->list, &operation_list);
} else {
abort = 1;
}
break;
}
case 'n': /* no verify */
verify = 0;
break;
case 'p': /* progress bar mode */
{
if (*optarg >= '0' && *optarg <= '2') {
progress = *optarg - '0';
} else {
fprintf(stderr, "invalid progress bar mode: '%s'\n", optarg);
abort = 1;
}
break;
}
progress = 0;
break;
case 'h':
case '?': /* error */
fprintf(stderr, "Usage: twiboot [options]\n"
" -a <address> - selects i2c address (0x01 - 0x7F)\n"
" -d <device> - selects i2c device (default: /dev/i2c-0)\n"
" -r <flash|eeprom>:<file> - reads flash/eeprom to file (.bin | .hex | -)\n"
" -w <flash|eeprom>:<file> - write flash/eeprom from file (.bin | .hex)\n"
" -n - disable verify after write\n"
" -p <0|1|2> - progress bar mode\n"
"\n"
"Example: twiboot -a 0x22 -w flash:blmc.hex -w flash:blmc_eeprom.hex\n"
"\n");
abort = 1;
break;
default: /* unknown / all options parsed */
break;
}
}
if (twb.address == 0) {
fprintf(stderr, "abort: no address given\n");
abort = 1;
}
if (twb.device == NULL) {
twb.device = strdup("/dev/i2c-0");
if (twb.device == NULL) {
perror("strdup()");
abort = 1;
}
}
if (!abort) {
if (twb_open(&twb) != 0x00)
abort = 1;
}
if (!abort) {
printf("device : %-16s (address: 0x%02X)\n", twb.device, twb.address);
printf("version : %-16s (sig: 0x%02x 0x%02x 0x%02x => %s)\n", twb.version, twb.signature[0], twb.signature[1], twb.signature[2], twb.chipname);
printf("flash size : 0x%04x / %5d (0x%02x bytes/page)\n", twb.flashsize, twb.flashsize, twb.pagesize);
printf("eeprom size : 0x%04x / %5d\n", twb.eepromsize, twb.eepromsize);
if (progress) {
setbuf(stdout, NULL);
twb.progress_cb = (progress == 1) ? progress_mode1_cb : progress_mode2_cb;
}
struct operation *op;
list_for_each_entry(op, &operation_list, list) {
abort = 1;
if (op->mode == OP_MODE_READ) {
struct databuf *dbuf;
int result;
if (op->memtype == OP_TYPE_FLASH) {
twb.progress_msg = "reading flash";
result = dbuf_alloc(&dbuf, twb.flashsize);
} else if (op->memtype == OP_TYPE_EEPROM) {
twb.progress_msg = "reading eeprom";
result = dbuf_alloc(&dbuf, twb.eepromsize);
}
if (result != 0x00)
break;
result = twb_read(&twb, dbuf, op->memtype);
if (result != 0x00) {
fprintf(stderr, "failed to read from device\n");
dbuf_free(dbuf);
break;
}
result = file_write(op->filename, dbuf);
if (result != 0x00) {
fprintf(stderr, "failed to write file '%s'\n", op->filename);
dbuf_free(dbuf);
break;
}
dbuf_free(dbuf);
} else if (op->mode == OP_MODE_WRITE) {
struct databuf *dbuf;
unsigned int size;
int result;
result = file_getsize(op->filename, &size);
if (result != 0x00)
break;
result = dbuf_alloc(&dbuf, size);
if (result != 0x00)
break;
result = file_read(op->filename, dbuf);
if (result != 0x00) {
fprintf(stderr, "failed to read file '%s'\n", op->filename);
dbuf_free(dbuf);
break;
}
if (op->memtype == OP_TYPE_FLASH) {
twb.progress_msg = "writing flash";
if (dbuf->length > twb.flashsize) {
fprintf(stderr, "invalid flash size: 0x%04x > 0x%04x\n", dbuf->length, twb.flashsize);
dbuf_free(dbuf);
break;
}
} else if (op->memtype == OP_TYPE_EEPROM) {
twb.progress_msg = "writing eeprom";
if (dbuf->length > twb.eepromsize) {
fprintf(stderr, "invalid eeprom size: 0x%04x > 0x%04x\n", dbuf->length, twb.eepromsize);
dbuf_free(dbuf);
break;
}
}
result = twb_write(&twb, dbuf, op->memtype);
if (result != 0x00) {
fprintf(stderr, "failed to write to device\n");
dbuf_free(dbuf);
break;
}
if (verify) {
if (op->memtype == OP_TYPE_FLASH) {
twb.progress_msg = "verifing flash";
} else if (op->memtype == OP_TYPE_EEPROM) {
twb.progress_msg = "verifing eeprom";
}
result = twb_verify(&twb, dbuf, op->memtype);
if (result != 0) {
fprintf(stderr, "failed to verify\n");
dbuf_free(dbuf);
break;
}
}
dbuf_free(dbuf);
}
abort = 0;
}
}
struct operation *op, *tmp;
list_for_each_entry_safe(op, tmp, &operation_list, list) {
free(op->filename);
free(op);
}
twb_close(&twb);
return abort;
}