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jtag3.c
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jtag3.c
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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2012 Joerg Wunsch <j@uriah.heep.sax.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; 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, see <http://www.gnu.org/licenses/>.
*/
/* $Id$ */
/*
* avrdude interface for Atmel JTAGICE3 programmer
*/
#include "ac_cfg.h"
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include "avrdude.h"
#include "avr.h"
#include "crc16.h"
#include "pgm.h"
#include "jtag3.h"
#include "jtag3_private.h"
#include "serial.h"
#include "usbdevs.h"
/*
* Private data for this programmer.
*/
struct pdata
{
unsigned short command_sequence; /* Next cmd seqno to issue. */
/*
* See jtag3_read_byte() for an explanation of the flash and
* EEPROM page caches.
*/
unsigned char *flash_pagecache;
unsigned long flash_pageaddr;
unsigned int flash_pagesize;
unsigned char *eeprom_pagecache;
unsigned long eeprom_pageaddr;
unsigned int eeprom_pagesize;
int prog_enabled; /* Cached value of PROGRAMMING status. */
/* JTAG chain stuff */
unsigned char jtagchain[4];
/* Start address of Xmega boot area */
unsigned long boot_start;
/* Function to set the appropriate clock parameter */
int (*set_sck)(PROGRAMMER *, unsigned char *);
};
#define PDATA(pgm) ((struct pdata *)(pgm->cookie))
/*
* pgm->flag is marked as "for private use of the programmer".
* The following defines this programmer's use of that field.
*/
#define PGM_FL_IS_DW (0x0001)
#define PGM_FL_IS_PDI (0x0002)
#define PGM_FL_IS_JTAG (0x0004)
static int jtag3_open(PROGRAMMER * pgm, char * port);
static int jtag3_initialize(PROGRAMMER * pgm, AVRPART * p);
static int jtag3_chip_erase(PROGRAMMER * pgm, AVRPART * p);
static int jtag3_read_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
unsigned long addr, unsigned char * value);
static int jtag3_write_byte(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
unsigned long addr, unsigned char data);
static int jtag3_set_sck_period(PROGRAMMER * pgm, double v);
static void jtag3_print_parms1(PROGRAMMER * pgm, const char * p);
static int jtag3_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
unsigned int page_size,
unsigned int addr, unsigned int n_bytes);
static unsigned char jtag3_memtype(PROGRAMMER * pgm, AVRPART * p, unsigned long addr);
static unsigned int jtag3_memaddr(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m, unsigned long addr);
void jtag3_setup(PROGRAMMER * pgm)
{
if ((pgm->cookie = malloc(sizeof(struct pdata))) == 0) {
fprintf(stderr,
"%s: jtag3_setup(): Out of memory allocating private data\n",
progname);
exit(1);
}
memset(pgm->cookie, 0, sizeof(struct pdata));
}
void jtag3_teardown(PROGRAMMER * pgm)
{
free(pgm->cookie);
}
static unsigned long
b4_to_u32(unsigned char *b)
{
unsigned long l;
l = b[0];
l += (unsigned)b[1] << 8;
l += (unsigned)b[2] << 16;
l += (unsigned)b[3] << 24;
return l;
}
static void
u32_to_b4(unsigned char *b, unsigned long l)
{
b[0] = l & 0xff;
b[1] = (l >> 8) & 0xff;
b[2] = (l >> 16) & 0xff;
b[3] = (l >> 24) & 0xff;
}
static unsigned short
b2_to_u16(unsigned char *b)
{
unsigned short l;
l = b[0];
l += (unsigned)b[1] << 8;
return l;
}
static void
u16_to_b2(unsigned char *b, unsigned short l)
{
b[0] = l & 0xff;
b[1] = (l >> 8) & 0xff;
}
static void jtag3_print_data(unsigned char *b, size_t s)
{
int i;
if (s < 2)
return;
for (i = 0; i < s; i++) {
fprintf(stderr, "0x%02x", b[i]);
if (i % 16 == 15)
putc('\n', stderr);
else
putc(' ', stderr);
}
if (i % 16 != 0)
putc('\n', stderr);
}
static void jtag3_prmsg(PROGRAMMER * pgm, unsigned char * data, size_t len)
{
int i;
if (verbose >= 4) {
fprintf(stderr, "Raw message:\n");
for (i = 0; i < len; i++) {
fprintf(stderr, "%02x ", data[i]);
if (i % 16 == 15)
putc('\n', stderr);
else
putc(' ', stderr);
}
if (i % 16 != 0)
putc('\n', stderr);
}
switch (data[0]) {
case SCOPE_INFO:
fprintf(stderr, "[info] ");
break;
case SCOPE_GENERAL:
fprintf(stderr, "[general] ");
break;
case SCOPE_AVR_ISP:
fprintf(stderr, "[AVRISP] ");
jtag3_print_data(data + 1, len - 1);
return;
case SCOPE_AVR:
fprintf(stderr, "[AVR] ");
break;
default:
fprintf(stderr, "[scope 0x%02x] ", data[0]);
break;
}
switch (data[1]) {
case RSP3_OK:
fprintf(stderr, "OK\n");
break;
case RSP3_FAILED:
fprintf(stderr, "FAILED");
if (len > 3)
{
char reason[50];
sprintf(reason, "0x%02x", data[3]);
switch (data[3])
{
case RSP3_FAIL_NO_ANSWER:
strcpy(reason, "target does not answer");
break;
case RSP3_FAIL_NO_TARGET_POWER:
strcpy(reason, "no target power");
break;
case RSP3_FAIL_NOT_UNDERSTOOD:
strcpy(reason, "command not understood");
break;
case RSP3_FAIL_WRONG_MODE:
strcpy(reason, "wrong (programming) mode");
break;
case RSP3_FAIL_PDI:
strcpy(reason, "PDI failure");
break;
case RSP3_FAIL_UNSUPP_MEMORY:
strcpy(reason, "unsupported memory type");
break;
case RSP3_FAIL_WRONG_LENGTH:
strcpy(reason, "wrong length in memory access");
break;
case RSP3_FAIL_DEBUGWIRE:
strcpy(reason, "debugWIRE communication failed");
break;
}
fprintf(stderr, ", reason: %s\n", reason);
}
else
{
fprintf(stderr, ", unspecified reason\n");
}
break;
case RSP3_DATA:
fprintf(stderr, "Data returned:\n");
jtag3_print_data(data + 2, len - 2);
break;
case RSP3_INFO:
fprintf(stderr, "Info returned:\n");
for (i = 2; i < len; i++) {
if (isprint(data[i]))
putc(data[i], stderr);
else
fprintf(stderr, "\\%03o", data[i]);
}
putc('\n', stderr);
break;
case RSP3_PC:
if (len < 7)
{
fprintf(stderr, "PC reply too short\n");
}
else
{
unsigned long pc = (data[6] << 24) | (data[5] << 16)
| (data[4] << 8) | data[3];
fprintf(stderr, "PC 0x%0lx\n", pc);
}
break;
default:
fprintf(stderr, "unknown message 0x%02x\n", data[1]);
}
}
static void jtag3_prevent(PROGRAMMER * pgm, unsigned char * data, size_t len)
{
int i;
if (verbose >= 4) {
fprintf(stderr, "Raw event:\n");
for (i = 0; i < len; i++) {
fprintf(stderr, "%02x ", data[i]);
if (i % 16 == 15)
putc('\n', stderr);
else
putc(' ', stderr);
}
if (i % 16 != 0)
putc('\n', stderr);
}
fprintf(stderr, "Event serial 0x%04x, ",
(data[3] << 8) | data[2]);
switch (data[4]) {
case SCOPE_INFO:
fprintf(stderr, "[info] ");
break;
case SCOPE_GENERAL:
fprintf(stderr, "[general] ");
break;
case SCOPE_AVR:
fprintf(stderr, "[AVR] ");
break;
default:
fprintf(stderr, "[scope 0x%02x] ", data[0]);
break;
}
switch (data[5]) {
case EVT3_BREAK:
fprintf(stderr, "BREAK");
if (len >= 11) {
fprintf(stderr, ", PC = 0x%lx, reason ", b4_to_u32(data + 6));
switch (data[10]) {
case 0x00:
fprintf(stderr, "unspecified");
break;
case 0x01:
fprintf(stderr, "program break");
break;
case 0x02:
fprintf(stderr, "data break PDSB");
break;
case 0x03:
fprintf(stderr, "data break PDMSB");
break;
default:
fprintf(stderr, "unknown: 0x%02x", data[10]);
}
/* There are two more bytes of data which always appear to be
* 0x01, 0x00. Purpose unknown. */
}
break;
case EVT3_SLEEP:
if (len >= 8 && data[7] == 0)
fprintf(stderr, "sleeping");
else if (len >= 8 && data[7] == 1)
fprintf(stderr, "wakeup");
else
fprintf(stderr, "unknown SLEEP event");
break;
case EVT3_POWER:
if (len >= 8 && data[7] == 0)
fprintf(stderr, "power-down");
else if (len >= 8 && data[7] == 1)
fprintf(stderr, "power-up");
else
fprintf(stderr, "unknown POWER event");
break;
default:
fprintf(stderr, "UNKNOWN 0x%02x", data[5]);
break;
}
putc('\n', stderr);
}
int jtag3_send(PROGRAMMER * pgm, unsigned char * data, size_t len)
{
unsigned char *buf;
if (verbose >= 3)
fprintf(stderr, "\n%s: jtag3_send(): sending %lu bytes\n",
progname, (unsigned long)len);
if ((buf = malloc(len + 4)) == NULL)
{
fprintf(stderr, "%s: jtag3_send(): out of memory",
progname);
return -1;
}
buf[0] = TOKEN;
buf[1] = 0; /* dummy */
u16_to_b2(buf + 2, PDATA(pgm)->command_sequence);
memcpy(buf + 4, data, len);
if (serial_send(&pgm->fd, buf, len + 4) != 0) {
fprintf(stderr,
"%s: jtag3_send(): failed to send command to serial port\n",
progname);
exit(1);
}
free(buf);
return 0;
}
static int jtag3_drain(PROGRAMMER * pgm, int display)
{
return serial_drain(&pgm->fd, display);
}
/*
* Receive one frame, return it in *msg. Received sequence number is
* returned in seqno. Any valid frame will be returned, regardless
* whether it matches the expected sequence number, including event
* notification frames (seqno == 0xffff).
*
* Caller must eventually free the buffer.
*/
static int jtag3_recv_frame(PROGRAMMER * pgm, unsigned char **msg) {
int rv;
unsigned char *buf = NULL;
if (verbose >= 4)
fprintf(stderr, "%s: jtag3_recv():\n", progname);
if ((buf = malloc(pgm->fd.usb.max_xfer)) == NULL) {
fprintf(stderr, "%s: jtag3_recv(): out of memory\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, buf, pgm->fd.usb.max_xfer);
if (rv < 0) {
/* timeout in receive */
if (verbose > 1)
fprintf(stderr,
"%s: jtag3_recv(): Timeout receiving packet\n",
progname);
free(buf);
return -1;
}
*msg = buf;
return rv;
}
int jtag3_recv(PROGRAMMER * pgm, unsigned char **msg) {
unsigned short r_seqno;
int rv;
for (;;) {
if ((rv = jtag3_recv_frame(pgm, msg)) <= 0)
return rv;
if ((rv & USB_RECV_FLAG_EVENT) != 0) {
if (verbose >= 3)
jtag3_prevent(pgm, *msg, rv & USB_RECV_LENGTH_MASK);
free(*msg);
continue;
}
rv &= USB_RECV_LENGTH_MASK;
r_seqno = ((*msg)[2] << 8) | (*msg)[1];
if (verbose >= 3)
fprintf(stderr, "%s: jtag3_recv(): "
"Got message seqno %d (command_sequence == %d)\n",
progname, r_seqno, PDATA(pgm)->command_sequence);
if (r_seqno == PDATA(pgm)->command_sequence) {
if (++(PDATA(pgm)->command_sequence) == 0xffff)
PDATA(pgm)->command_sequence = 0;
/*
* We move the payload to the beginning of the buffer, to make
* the job easier for the caller. We have to return the
* original pointer though, as the caller must free() it.
*/
memmove(*msg, *msg + 3, rv);
rv -= 3;
return rv;
}
if (verbose >= 2)
fprintf(stderr, "%s: jtag3_recv(): "
"got wrong sequence number, %u != %u\n",
progname, r_seqno, PDATA(pgm)->command_sequence);
free(*msg);
}
}
int jtag3_command(PROGRAMMER *pgm, unsigned char *cmd, unsigned int cmdlen,
unsigned char **resp, const char *descr)
{
int status;
unsigned char c;
if (verbose >= 2)
fprintf(stderr, "%s: Sending %s command: ",
progname, descr);
jtag3_send(pgm, cmd, cmdlen);
status = jtag3_recv(pgm, resp);
if (status <= 0) {
if (verbose >= 2)
putc('\n', stderr);
fprintf(stderr,
"%s: %s command: timeout/error communicating with programmer (status %d)\n",
progname, descr, status);
return -1;
} else if (verbose >= 3) {
putc('\n', stderr);
jtag3_prmsg(pgm, *resp, status);
} else if (verbose == 2)
fprintf(stderr, "0x%02x (%d bytes msg)\n", (*resp)[1], status);
c = (*resp)[1];
if ((c & RSP3_STATUS_MASK) != RSP3_OK) {
fprintf(stderr,
"%s: bad response to %s command: 0x%02x\n",
progname, descr, c);
free(*resp);
resp = 0;
return -1;
}
return status;
}
int jtag3_getsync(PROGRAMMER * pgm, int mode) {
unsigned char buf[3], *resp;
if (verbose >= 3)
fprintf(stderr, "%s: jtag3_getsync()\n", progname);
/* Get the sign-on information. */
buf[0] = SCOPE_GENERAL;
buf[1] = CMD3_SIGN_ON;
buf[2] = 0;
if (jtag3_command(pgm, buf, 3, &resp, "sign-on") < 0)
return -1;
free(resp);
return 0;
}
/*
* issue the 'chip erase' command to the AVR device
*/
static int jtag3_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char buf[8], *resp;
buf[0] = SCOPE_AVR;
buf[1] = CMD3_ERASE_MEMORY;
buf[2] = 0;
buf[3] = XMEGA_ERASE_CHIP;
buf[4] = buf[5] = buf[6] = buf[7] = 0; /* page address */
if (jtag3_command(pgm, buf, 8, &resp, "chip erase") < 0)
return -1;
free(resp);
return 0;
}
/*
* There is no chip erase functionality in debugWire mode.
*/
static int jtag3_chip_erase_dw(PROGRAMMER * pgm, AVRPART * p)
{
fprintf(stderr, "%s: Chip erase not supported in debugWire mode\n",
progname);
return 0;
}
static int jtag3_program_enable_dummy(PROGRAMMER * pgm, AVRPART * p)
{
return 0;
}
static int jtag3_program_enable(PROGRAMMER * pgm)
{
unsigned char buf[3], *resp;
int use_ext_reset;
if (PDATA(pgm)->prog_enabled)
return 0;
for (use_ext_reset = 0; use_ext_reset <= 1; use_ext_reset++) {
buf[0] = SCOPE_AVR;
buf[1] = CMD3_ENTER_PROGMODE;
buf[2] = 0;
if (jtag3_command(pgm, buf, 3, &resp, "enter progmode") >= 0) {
free(resp);
break;
}
/* XXX activate external reset here */
if (verbose > 0)
fprintf(stderr,
"%s: retrying with external reset applied\n",
progname);
}
PDATA(pgm)->prog_enabled = 1;
return 0;
}
static int jtag3_program_disable(PROGRAMMER * pgm)
{
unsigned char buf[3], *resp;
if (!PDATA(pgm)->prog_enabled)
return 0;
buf[0] = SCOPE_AVR;
buf[1] = CMD3_LEAVE_PROGMODE;
buf[2] = 0;
if (jtag3_command(pgm, buf, 3, &resp, "leave progmode") < 0)
return -1;
free(resp);
PDATA(pgm)->prog_enabled = 0;
return 0;
}
static int jtag3_set_sck_xmega_pdi(PROGRAMMER *pgm, unsigned char *clk)
{
return jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_CLK_XMEGA_PDI, clk, 2);
}
static int jtag3_set_sck_xmega_jtag(PROGRAMMER *pgm, unsigned char *clk)
{
return jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_CLK_XMEGA_JTAG, clk, 2);
}
static int jtag3_set_sck_mega_jtag(PROGRAMMER *pgm, unsigned char *clk)
{
return jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_CLK_MEGA_PROG, clk, 2);
}
/*
* initialize the AVR device and prepare it to accept commands
*/
static int jtag3_initialize(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char conn = 0, parm[4];
const char *ifname;
unsigned char cmd[4], *resp;
int status;
/*
* At least, as of firmware 2.12, the JTAGICE3 doesn't handle
* splitting packets correctly. On a large transfer, the first
* split packets are correct, but remaining packets contain just
* garbage.
*
* We move the check here so in case future firmware versions fix
* this, the check below can be made dependended on the actual
* firmware level. Retrieving the firmware version can always be
* accomplished with USB 1.1 (64 byte max) packets.
*
* Allow to override the check by -F (so users could try on newer
* firmware), but warn loudly.
*/
if (jtag3_getparm(pgm, SCOPE_GENERAL, 0, PARM3_FW_MAJOR, parm, 2) < 0)
return -1;
if (pgm->fd.usb.max_xfer < USBDEV_MAX_XFER_3) {
fprintf(stderr,
"%s: the JTAGICE3's firmware %d.%d is broken on USB 1.1 connections, sorry\n",
progname, parm[0], parm[1]);
if (ovsigck) {
fprintf(stderr,
"%s: forced to continue by option -F; THIS PUTS THE DEVICE'S DATA INTEGRITY AT RISK!\n",
progname);
} else {
serial_close(&pgm->fd);
return -1;
}
}
if (pgm->flag & PGM_FL_IS_DW) {
ifname = "debugWire";
if (p->flags & AVRPART_HAS_DW)
conn = PARM3_CONN_DW;
} else if (pgm->flag & PGM_FL_IS_PDI) {
ifname = "PDI";
if (p->flags & AVRPART_HAS_PDI)
conn = PARM3_CONN_PDI;
} else {
ifname = "JTAG";
if (p->flags & AVRPART_HAS_JTAG)
conn = PARM3_CONN_JTAG;
}
if (conn == 0) {
fprintf(stderr, "%s: jtag3_initialize(): part %s has no %s interface\n",
progname, p->desc, ifname);
return -1;
}
if (p->flags & AVRPART_HAS_PDI)
parm[0] = PARM3_ARCH_XMEGA;
else if (p->flags & AVRPART_HAS_DW)
parm[0] = PARM3_ARCH_TINY;
else
parm[0] = PARM3_ARCH_MEGA;
if (jtag3_setparm(pgm, SCOPE_AVR, 0, PARM3_ARCH, parm, 1) < 0)
return -1;
parm[0] = PARM3_SESS_PROGRAMMING;
if (jtag3_setparm(pgm, SCOPE_AVR, 0, PARM3_SESS_PURPOSE, parm, 1) < 0)
return -1;
parm[0] = conn;
if (jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_CONNECTION, parm, 1) < 0)
return -1;
if (conn == PARM3_CONN_PDI)
PDATA(pgm)->set_sck = jtag3_set_sck_xmega_pdi;
else if (conn == PARM3_CONN_JTAG) {
if (p->flags & AVRPART_HAS_PDI)
PDATA(pgm)->set_sck = jtag3_set_sck_xmega_jtag;
else
PDATA(pgm)->set_sck = jtag3_set_sck_mega_jtag;
}
if (pgm->bitclock != 0.0 && PDATA(pgm)->set_sck != NULL)
{
unsigned int clock = 1E-3 / pgm->bitclock; /* kHz */
if (verbose >= 2)
fprintf(stderr, "%s: jtag3_initialize(): "
"trying to set JTAG clock to %u kHz\n",
progname, clock);
parm[0] = clock & 0xff;
parm[1] = (clock >> 8) & 0xff;
if (PDATA(pgm)->set_sck(pgm, parm) < 0)
return -1;
}
if (conn == PARM3_CONN_JTAG)
{
if (verbose >= 2)
fprintf(stderr, "%s: jtag3_initialize(): "
"trying to set JTAG daisy-chain info to %d,%d,%d,%d\n",
progname,
PDATA(pgm)->jtagchain[0], PDATA(pgm)->jtagchain[1],
PDATA(pgm)->jtagchain[2], PDATA(pgm)->jtagchain[3]);
if (jtag3_setparm(pgm, SCOPE_AVR, 1, PARM3_JTAGCHAIN, PDATA(pgm)->jtagchain, 4) < 0)
return -1;
}
/* set device descriptor data */
if ((p->flags & AVRPART_HAS_PDI))
{
struct xmega_device_desc xd;
LNODEID ln;
AVRMEM * m;
u16_to_b2(xd.nvm_base_addr, p->nvm_base);
u16_to_b2(xd.mcu_base_addr, p->mcu_base);
for (ln = lfirst(p->mem); ln; ln = lnext(ln)) {
m = ldata(ln);
if (strcmp(m->desc, "flash") == 0) {
PDATA(pgm)->flash_pagesize = m->page_size;
u16_to_b2(xd.flash_page_size, m->page_size);
} else if (strcmp(m->desc, "eeprom") == 0) {
PDATA(pgm)->eeprom_pagesize = m->page_size;
xd.eeprom_page_size = m->page_size;
u16_to_b2(xd.eeprom_size, m->size);
u32_to_b4(xd.nvm_eeprom_offset, m->offset);
} else if (strcmp(m->desc, "application") == 0) {
u32_to_b4(xd.app_size, m->size);
u32_to_b4(xd.nvm_app_offset, m->offset);
} else if (strcmp(m->desc, "boot") == 0) {
u16_to_b2(xd.boot_size, m->size);
u32_to_b4(xd.nvm_boot_offset, m->offset);
} else if (strcmp(m->desc, "fuse1") == 0) {
u32_to_b4(xd.nvm_fuse_offset, m->offset & ~7);
} else if (strcmp(m->desc, "lock") == 0) {
u32_to_b4(xd.nvm_lock_offset, m->offset);
} else if (strcmp(m->desc, "usersig") == 0) {
u32_to_b4(xd.nvm_user_sig_offset, m->offset);
} else if (strcmp(m->desc, "prodsig") == 0) {
u32_to_b4(xd.nvm_prod_sig_offset, m->offset);
} else if (strcmp(m->desc, "data") == 0) {
u32_to_b4(xd.nvm_data_offset, m->offset);
}
}
if (jtag3_setparm(pgm, SCOPE_AVR, 2, PARM3_DEVICEDESC, (unsigned char *)&xd, sizeof xd) < 0)
return -1;
}
else
{
struct mega_device_desc md;
LNODEID ln;
AVRMEM * m;
unsigned int flashsize = 0;
memset(&md, 0, sizeof md);
for (ln = lfirst(p->mem); ln; ln = lnext(ln)) {
m = ldata(ln);
if (strcmp(m->desc, "flash") == 0) {
PDATA(pgm)->flash_pagesize = m->page_size;
u16_to_b2(md.flash_page_size, m->page_size);
u32_to_b4(md.flash_size, (flashsize = m->size));
// do we need it? just a wild guess
u32_to_b4(md.boot_address, (m->size - m->page_size * 4) / 2);
} else if (strcmp(m->desc, "eeprom") == 0) {
PDATA(pgm)->eeprom_pagesize = m->page_size;
md.eeprom_page_size = m->page_size;
u16_to_b2(md.eeprom_size, m->size);
}
}
//md.sram_offset[2] = p->sram; // do we need it?
if (p->ocdrev == -1) {
int ocdrev;
/* lacking a proper definition, guess the OCD revision */
if (p->flags & AVRPART_HAS_DW)
ocdrev = 1; /* exception: ATtiny13, 2313, 4313 */
else if (flashsize > 128 * 1024)
ocdrev = 4;
else
ocdrev = 3; /* many exceptions from that, actually */
fprintf(stderr,
"%s: part definition for %s lacks \"ocdrev\"; guessing %d\n",
progname, p->desc, ocdrev);
md.ocd_revision = ocdrev;
} else {
md.ocd_revision = p->ocdrev;
}
md.always_one = 1;
md.allow_full_page_bitstream = (p->flags & AVRPART_ALLOWFULLPAGEBITSTREAM) != 0;
md.idr_address = p->idr;
if (p->eecr == 0)
p->eecr = 0x3f; /* matches most "modern" mega/tiny AVRs */
md.eearh_address = p->eecr - 0x20 + 3;
md.eearl_address = p->eecr - 0x20 + 2;
md.eecr_address = p->eecr - 0x20;
md.eedr_address = p->eecr - 0x20 + 1;
md.spmcr_address = p->spmcr;
//md.osccal_address = p->osccal; // do we need it at all?
if (jtag3_setparm(pgm, SCOPE_AVR, 2, PARM3_DEVICEDESC, (unsigned char *)&md, sizeof md) < 0)
return -1;
}
cmd[0] = SCOPE_AVR;
cmd[1] = CMD3_SIGN_ON;
cmd[2] = 0;
cmd[3] = 0; /* external reset */
if ((status = jtag3_command(pgm, cmd, 4, &resp, "AVR sign-on")) < 0)
return -1;
/*
* Depending on the target connection, there are two different
* possible replies of the ICE. For a JTAG connection, the reply
* format is RSP3_DATA, followed by 4 bytes of the JTAG ID read from
* the device (followed by a trailing 0). For all other connections
* (except ISP which is handled completely differently, but that
* doesn't apply here anyway), the response is just RSP_OK.
*/
if (resp[1] == RSP3_DATA && status >= 7 && verbose >= 1)
/* JTAG ID has been returned */
fprintf(stderr, "%s: JTAG ID returned: 0x%02x 0x%02x 0x%02x 0x%02x\n",
progname, resp[3], resp[4], resp[5], resp[6]);
free(resp);
PDATA(pgm)->boot_start = ULONG_MAX;
if ((p->flags & AVRPART_HAS_PDI)) {
/*
* Find out where the border between application and boot area
* is.
*/
AVRMEM *bootmem = avr_locate_mem(p, "boot");
AVRMEM *flashmem = avr_locate_mem(p, "flash");
if (bootmem == NULL || flashmem == NULL) {
fprintf(stderr,
"%s: jtagmk3_initialize(): Cannot locate \"flash\" and \"boot\" memories in description\n",
progname);
} else {
PDATA(pgm)->boot_start = bootmem->offset - flashmem->offset;
}
}
free(PDATA(pgm)->flash_pagecache);
free(PDATA(pgm)->eeprom_pagecache);
if ((PDATA(pgm)->flash_pagecache = malloc(PDATA(pgm)->flash_pagesize)) == NULL) {
fprintf(stderr, "%s: jtag3_initialize(): Out of memory\n",
progname);
return -1;
}
if ((PDATA(pgm)->eeprom_pagecache = malloc(PDATA(pgm)->eeprom_pagesize)) == NULL) {
fprintf(stderr, "%s: jtag3_initialize(): Out of memory\n",
progname);
free(PDATA(pgm)->flash_pagecache);
return -1;
}
PDATA(pgm)->flash_pageaddr = PDATA(pgm)->eeprom_pageaddr = (unsigned long)-1L;
return 0;
}
static void jtag3_disable(PROGRAMMER * pgm)
{
free(PDATA(pgm)->flash_pagecache);
PDATA(pgm)->flash_pagecache = NULL;
free(PDATA(pgm)->eeprom_pagecache);
PDATA(pgm)->eeprom_pagecache = NULL;
/*
* jtag3_program_disable() doesn't do anything if the
* device is currently not in programming mode, so just
* call it unconditionally here.
*/
(void)jtag3_program_disable(pgm);
}
static void jtag3_enable(PROGRAMMER * pgm)
{
return;
}
static int jtag3_parseextparms(PROGRAMMER * pgm, LISTID extparms)
{
LNODEID ln;
const char *extended_param;
int rv = 0;
for (ln = lfirst(extparms); ln; ln = lnext(ln)) {
extended_param = ldata(ln);
if (strncmp(extended_param, "jtagchain=", strlen("jtagchain=")) == 0) {
unsigned int ub, ua, bb, ba;
if (sscanf(extended_param, "jtagchain=%u,%u,%u,%u", &ub, &ua, &bb, &ba)
!= 4) {
fprintf(stderr,
"%s: jtag3_parseextparms(): invalid JTAG chain '%s'\n",
progname, extended_param);
rv = -1;
continue;
}
if (verbose >= 2) {
fprintf(stderr,
"%s: jtag3_parseextparms(): JTAG chain parsed as:\n"
"%s %u units before, %u units after, %u bits before, %u bits after\n",
progname,
progbuf, ub, ua, bb, ba);
}
PDATA(pgm)->jtagchain[0] = ub;
PDATA(pgm)->jtagchain[1] = ua;
PDATA(pgm)->jtagchain[2] = bb;