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/*
* nios2sim-ng -- Nios II Simulator (Next Generation)
*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
*
* Based on Nios-sim, which is:
* Copyright (C) 2010 chysun2000@gmail.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
#include <string.h>
#include <errno.h>
#include "nios2sim-ng.h"
#include "image.h"
/* XXX: TMP */
#include "instruction.h"
#include "nios2.h"
#define PROGRAM_NAME "nios2sim-ng"
#define PROGRAM_VERSION VERSION /* Set in Makefile */
#define DEFAULT_MEM_SIZE (16 * 1024 * 1024)
bool verbose = false;
static void usage_and_exit(const int status)
{
fprintf(stdout, "Usage: %s [OPTION...] IMAGE\n"
" -c CMDLINE, --cmdline=CMDLINE\n"
" specify kernel command line\n"
" -m MEMSIZE, --memsize=MEMSIZE\n"
" set memory size for simulator (default %zu%s)\n"
" -M, --mmu simulate Nios II with MMU\n"
" -e, --elf image is in ELF format (default)\n"
" -s, --srec image is in SREC format\n"
" -d, --debug enable debug mode\n"
" -v, --verbose enable verbose outputs\n"
" -V, --version print version information and exit\n"
" -h, --help print this help and exit\n"
"\n"
"Example:\n"
" %s -s -m 32M -d -c console=ttyJ0 init=/bin/sh\n"
"",
PROGRAM_NAME, size_scale(DEFAULT_MEM_SIZE),
size_postfix(DEFAULT_MEM_SIZE), PROGRAM_NAME);
exit(status);
}
static const struct option long_opts[] = {
{ "cmdline", required_argument, NULL, 'c' },
{ "memsize", required_argument, NULL, 'm' },
{ "mmu", no_argument, NULL, 'M' },
{ "elf", no_argument, NULL, 'e' },
{ "srec", no_argument, NULL, 's' },
{ "debug", no_argument, NULL, 'd' },
{ "verbose", no_argument, NULL, 'v' },
{ "version", no_argument, NULL, 'V' },
{ "help", no_argument, NULL, 'h' },
{ NULL, 0, NULL, 0 }
};
static const char *short_opts = "c:m:MesdvVh";
static size_t parse_mem_size(char *opt)
{
size_t len = strlen(opt);
size_t mem_size;
size_t mul = 1;
switch (opt[len - 1]) {
case 'k':
case 'K':
mul = 1024;
opt[len - 1] = '\0';
break;
case 'm':
case 'M':
mul = 1024 * 1024;
opt[len - 1] = '\0';
break;
}
errno = 0;
mem_size = strtoul(optarg, NULL, 0);
if (errno != 0) {
err("Invalid memory size: %s\n", opt);
exit(EXIT_FAILURE);
}
mem_size *= mul;
return round_up(mem_size, 4);
}
int main(int argc, char *argv[])
{
char *image_path;
char *cmdline = "";
int image_format = FORMAT_ELF;
uint8_t *mem_base;
size_t mem_size = DEFAULT_MEM_SIZE;
struct nios2 cpu;
int c;
while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
switch(c) {
case 'c':
cmdline = optarg;
break;
case 'm':
mem_size = parse_mem_size(optarg);
break;
case 'M':
cpu.has_mmu = true;
case 'e':
image_format = FORMAT_ELF;
break;
case 's':
image_format = FORMAT_SREC;
break;
case 'd':
// set_debug_mode(get_nios_cpu());
break;
case 'v':
verbose = true;
break;
case 'V':
info("%s %s\n", PROGRAM_NAME, PROGRAM_VERSION);
exit(EXIT_SUCCESS);
/* never reached */
case 'h':
usage_and_exit(EXIT_SUCCESS);
/* never reached */
default:
usage_and_exit(EXIT_FAILURE);
}
}
if (optind >= argc) {
err("No image file specified\n");
exit(EXIT_FAILURE);
}
image_path = argv[optind];
mem_base = malloc(mem_size);
if (unlikely(mem_base == NULL)) {
err("Failed to allocate memory\n");
exit(EXIT_FAILURE);
}
memset(mem_base, 0x00, mem_size);
if (image_load(image_path, image_format, mem_base, mem_size))
exit(EXIT_FAILURE);
vinfo(" Image file: %s\n", image_path);
vinfo(" Image format: %s\n", image_format_str(image_format));
vinfo(" Memory size: %zu %sbytes\n", size_scale(mem_size), size_postfix(mem_size));
vinfo(" Memory base: %p\n", mem_base);
vinfo(" Kernel command line: %s\n", cmdline);
#if 0
printf("Base address:0x%08X, Entry address:0x%08X\n",image_info.base_addr,
image_info.entry_addr);
printf("Set command line:%s\n", cmd_line);
printf("Initrd: 0x%08x size:0x%08x\n",initrd_start, initrd_size);
printf("rootfs: %s \n",fs_image);
simulating();
#endif
exit(EXIT_SUCCESS);
}
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