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sparclite
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eload.c
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C/C++ Source or Header
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1995-07-29
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9KB
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452 lines
/* Program to load an image into the SPARClite monitor board via Ethernet
Copyright 1993 Free Software Foundation, Inc.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Call with:
eload PROG HOSTNAME
(HOSTNAME is the name (or IP address) of your eval board)
ie: eload hello sparky
*/
#include <stdio.h>
#include "ansidecl.h"
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "libiberty.h"
#include "bfd.h"
#include <errno.h>
#include <fcntl.h>
#include <termios.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <fcntl.h>
#include <sys/time.h>
#define min(A, B) (((A) < (B)) ? (A) : (B))
/* Where the code goes by default. */
#ifndef LOAD_ADDRESS
#define LOAD_ADDRESS 0x40000000
#endif
static void
usage()
{
fprintf (stderr, "usage: eload executable-file network-name\n");
exit (1);
}
static void
#ifdef ANSI_PROTOTYPES
sys_error (char *msg, ...)
#else
sys_error (va_alist)
va_dcl
#endif
{
int e = errno;
va_list args;
#ifdef ANSI_PROTOTYPES
va_start (args, msg);
#else
va_start (args);
#endif
#ifdef ANSI_PROTOTYPES
vfprintf (stderr, msg, args);
#else
{
char *msg1;
msg1 = va_arg (args, char *);
vfprintf (stderr, msg1, args);
}
#endif
va_end (args);
fprintf (stderr, ": %s\n", strerror(e));
exit (1);
}
static void
#ifdef ANSI_PROTOTYPES
error (char *msg, ...)
#else
error (va_alist)
va_dcl
#endif
{
va_list args;
#ifdef ANSI_PROTOTYPES
va_start (args, msg);
#else
va_start (args);
#endif
#ifdef ANSI_PROTOTYPES
vfprintf (stderr, msg, args);
#else
{
char *msg1;
msg1 = va_arg (args, char *);
vfprintf (stderr, msg1, args);
}
#endif
va_end (args);
fputc ('\n', stderr);
exit (1);
}
int netfd;
static int
recv_buf (fd, buf, len, timeout)
int fd, len;
unsigned char *buf;
int timeout;
{
int cc;
fd_set readfds;
FD_ZERO (&readfds);
FD_SET (fd, &readfds);
if (timeout >= 0)
{
struct timeval timebuf;
timebuf.tv_sec = timeout;
timebuf.tv_usec = 0;
cc = select (fd + 1, &readfds, 0, 0, &timebuf);
}
else
cc = select (fd + 1, &readfds, 0, 0, 0);
if (cc == 0)
return 0;
if (cc != 1)
sys_error ("recv_buf: Bad return value from select:");
cc = recv (fd, buf, len, 0);
if (cc < 0)
sys_error ("Got an error from recv: ");
return cc;
}
static void
send_buf (fd, buf, len)
int fd, len;
unsigned char *buf;
{
int cc;
cc = send (fd, buf, len, 0);
if (cc == len)
return;
if (cc < 0)
sys_error ("Got an error from send: ");
printf ("Short count in send: tried %d, sent %d\n", len, cc);
}
static unsigned short
calc_checksum (buffer, count)
unsigned char *buffer;
int count;
{
unsigned short checksum;
unsigned short *s;
s = (unsigned short *)buffer;
checksum = 0;
for (; count > 0; count -= 2)
checksum += *s++;
if (count != 0)
checksum += (*s & 0xff00);
return checksum;
}
static void
send_data (buffer, fd, addr, count)
unsigned char *buffer;
int fd;
unsigned long addr;
int count;
{
int cc, i;
static int pkt_num = 0;
unsigned char snd_buf[2000];
unsigned short checksum;
static unsigned long old_addr = -1;
while (1)
{
if (addr != old_addr)
{
snd_buf[0] = 0x1; /* Load command */
snd_buf[1] = 0x1; /* Loading address */
snd_buf[2] = addr >> 24;
snd_buf[3] = addr >> 16;
snd_buf[4] = addr >> 8;
snd_buf[5] = addr;
checksum = 0;
for (i = 0; i < 6; i++)
checksum += snd_buf[i];
checksum &= 0xff;
send_buf (fd, snd_buf, 6);
cc = recv_buf (fd, snd_buf, sizeof snd_buf, -1);
if (cc < 1)
{
fprintf (stderr, "Got back short checksum for load addr\n");
exit (1);
}
if (checksum != snd_buf[0])
{
fprintf (stderr, "Got back bad checksum for load addr\n");
exit (1);
}
pkt_num = 0; /* Load addr resets packet seq # */
old_addr = addr;
}
memcpy (snd_buf + 6, buffer, count);
checksum = calc_checksum (buffer, count);
snd_buf[0] = 0x1; /* Load command */
snd_buf[1] = 0x2; /* Loading data */
snd_buf[2] = pkt_num >> 8;
snd_buf[3] = pkt_num;
snd_buf[4] = checksum >> 8;
snd_buf[5] = checksum;
send_buf (fd, snd_buf, count + 6);
cc = recv_buf (fd, snd_buf, sizeof snd_buf, 3);
if (cc == 0)
{
fprintf (stderr
, "send_data: timeout sending %d bytes to addr 0x%lx, retrying\n", count, addr);
continue;
}
if (cc < 1)
{
fprintf (stderr, "Got back short response for load data\n");
exit (1);
}
if (snd_buf[0] != 0xff)
{
fprintf (stderr, "Got back bad response for load data\n");
exit (1);
}
old_addr += count;
pkt_num++;
return;
}
}
extern int optind;
int
main (argc, argv)
int argc;
char **argv;
{
int cc, c;
unsigned char buf[10];
asection *section;
bfd *pbfd;
unsigned long entry;
struct hostent *he;
struct sockaddr_in sockaddr;
while ((c = getopt(argc, argv, "")) != EOF)
{
switch (c)
{
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 2)
usage ();
pbfd = bfd_openr (argv[1], 0);
if (pbfd == NULL)
sys_error ("Open of PROG failed");
/* Setup the socket. Must be raw UDP. */
he = gethostbyname (argv[2]);
if (!he)
sys_error ("No such host");
netfd = socket (PF_INET, SOCK_DGRAM, 0);
sockaddr.sin_family = PF_INET;
sockaddr.sin_port = htons(7000);
memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr));
if (connect (netfd, &sockaddr, sizeof(sockaddr)))
sys_error ("Connect failed");
buf[0] = 0x5;
buf[1] = 0;
send_buf (netfd, buf, 2); /* Request version */
cc = recv_buf (netfd, buf, sizeof(buf), -1); /* Get response */
if (cc < 3)
{
fprintf (stderr, "SPARClite appears to be ill\n");
exit (1);
}
printf ("[SPARClite appears to be alive]\n");
if (!bfd_check_format (pbfd, bfd_object))
error ("It doesn't seem to be an object file");
for (section = pbfd->sections; section; section = section->next)
{
if (bfd_get_section_flags (pbfd, section) & SEC_ALLOC)
{
bfd_vma section_address;
unsigned long section_size;
const char *section_name;
section_name = bfd_get_section_name (pbfd, section);
section_address = bfd_get_section_vma (pbfd, section);
/* Adjust sections from a.out files, since they don't
carry their addresses with. */
if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
section_address += LOAD_ADDRESS;
section_size = bfd_section_size (pbfd, section);
printf("[Loading section %s at %lx (%ld bytes)]\n",
section_name, section_address, section_size);
/* Text, data or lit */
if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
{
file_ptr fptr;
fptr = 0;
while (section_size > 0)
{
char buffer[1024];
int count;
static char inds[] = "|/-\\";
static int k = 0;
count = min (section_size, 1024);
bfd_get_section_contents (pbfd, section, buffer, fptr,
count);
#if 0
{
int i;
unsigned char checksum;
checksum = 0;
for (i=0; i < count; i++)
checksum += buffer[i];
}
#endif
printf ("\r%c", inds[k++ % 4]);
fflush (stdout);
send_data (buffer, netfd, section_address, count);
section_address += count;
fptr += count;
section_size -= count;
}
}
else /* BSS */
printf ("Not loading BSS \n");
}
}
entry = bfd_get_start_address (pbfd);
printf ("[Starting %s at 0x%lx]\n", argv[1], entry);
buf[0] = 0x3;
buf[1] = 0;
buf[2] = entry >> 24;
buf[3] = entry >> 16;
buf[4] = entry >> 8;
buf[5] = entry;
send_buf (netfd, buf, 6); /* Send start addr */
cc = recv_buf (netfd, buf, sizeof(buf), -1); /* Get response */
if (cc < 1 || buf[0] != 0x55)
{
fprintf (stderr, "Failed to take start address\n");
exit (1);
}
exit (0);
}