+++ /dev/null
-/*
- * devmem2.c: Simple program to read/write from/to any location in memory.
- *
- * Copyright (C) 2000, Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
- *
- *
- * This software has been developed for the LART computing board
- * (http://www.lart.tudelft.nl/). The development has been sponsored by
- * the Mobile MultiMedia Communications (http://www.mmc.tudelft.nl/)
- * and Ubiquitous Communications (http://www.ubicom.tudelft.nl/)
- * projects.
- *
- * The author can be reached at:
- *
- * Jan-Derk Bakker
- * Information and Communication Theory Group
- * Faculty of Information Technology and Systems
- * Delft University of Technology
- * P.O. Box 5031
- * 2600 GA Delft
- * The Netherlands
- *
- *
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <signal.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <termios.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-
-
-#define FATAL do { fprintf(stderr, "Error at line %d, file %s (%d) [%s]\n", \
- __LINE__, __FILE__, errno, strerror(errno)); exit(1); } while(0)
-
-#define MAP_SIZE 4096UL
-#define MAP_MASK (MAP_SIZE - 1)
-
-int main(int argc, char **argv) {
-
- int fd, input_fd;
-
- void *map_base, *virt_addr;
- unsigned long read_result, writeval;
- off_t target;
- int access_type = 'w';
-
- if(argc < 3) {
- fprintf(stderr, "\nUsage:\t%s { address } { file }\n"
- "\taddress : memory address to act upon\n"
- "\tfile : file to load\n\n", argv[0]);
- exit(1);
- }
-
- input_fd = open(argv[2], O_RDONLY);
- if (input_fd < 0) FATAL;
-
- struct stat st;
- if (fstat(input_fd, &st) < 0) FATAL;
-
- char * buf = malloc(st.st_size);
- if (!buf) FATAL;
- if (read(input_fd, buf, st.st_size) != st.st_size) FATAL;
-
- target = strtoul(argv[1], 0, 0);
-
- fd = open("/dev/mem", O_RDWR | O_SYNC);
- if (fd < 0) FATAL;
-
- printf("/dev/mem opened.\n");
- fflush(stdout);
-
- /* Map one page */
- map_base = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, target & ~MAP_MASK);
-
- if (map_base == (void *) -1) FATAL;
-
- printf("Memory mapped at address %p.\n", map_base);
- fflush(stdout);
-
- virt_addr = map_base + (target & MAP_MASK);
- memcpy(virt_addr, buf, st.st_size);
-
- printf("Copied %d bytes.\n", st.st_size);
-
- return 0;
-}