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/* config.c -- Simulator configuration
   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
 
This file is part of OpenRISC 1000 Architectural Simulator.
 
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. */
 
/* Simulator configuration. Eventually this one will be a lot bigger. */
 
#include <stdlib.h>
#include "sim-config.h"
#include "abstract.h"
#include "spr_defs.h"
#include "pic.h"
 
struct config config;
 
void init_defconfig()
{
  unsigned long val;
 
  memset(&config, 0, sizeof(config));
  config.dc.tagtype = NONE/*VIRTUAL*/;
  config.ic.tagtype = NONE/*VIRTUAL*/;
  config.bp.bpb_sim = 1;
  config.bp.btic_sim = 1;
  config.clkcycle_ns = 4; /* 4 for 4ns (250MHz) */
  config.uarts[0].rxfile = "/tmp/uart0.rx";
  config.uarts[0].txfile = "/tmp/uart0.tx";
  config.uarts[0].baseaddr = 0x80000000;
  config.uarts[0].jitter = -1; /* Async behavior */
  config.dmas[0].baseaddr = 0x90000000;
  config.dmas[0].irq = INT_DMA;
  config.simdebug = 0;
  config.profile = 0;
  config.iprompt = 0;
  config.dependstats = 1;
  config.dependency = 1;
  config.history = 1;
  config.superscalar = 1;
  config.slp = 1;
  config.profile = 0;
  strcpy(config.mc.memory_table_file, "sim.mem");
 
  mtspr(SPR_VR, SPR_VR_VER & 0x1200);
 
  val = SPR_UPR_UP | SPR_UPR_DCP | SPR_UPR_ICP | SPR_UPR_DMP |
  SPR_UPR_IMP | SPR_UPR_OB32P | SPR_UPR_DUP | SPR_UPR_PICP |
  SPR_UPR_PMP | SPR_UPR_TTP;
 
  mtspr(SPR_UPR, val);
}
 
int parse_args(int argc, char *argv[])
{
  unsigned long val;
 
  argv++; argc--;
  while (argc) {
    if (argc && (*argv[0] != '-')) {
      config.filename = argv[0];
      argc--;
      argv++;
    } else
    if (strcmp(*argv, "-initmem") == 0) {  /* (CZ) */
      char *pattern,*s;
      if(!--argc)
        return 1;
      pattern = *(++argv);
      if(!strcmp(pattern,"random"))
        config.random_mem = 1;
      else
        {
          val = strtol(pattern,&s,0);
          if(*s)
            return 1;
          config.pattern_mem = val;
        }
    } else
    if (strcmp(*argv, "-nosrv") == 0) {  /* (CZ) */
      config.inhibit_server = 1;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-srv") == 0) {  /* (CZ) */
      char *s;
      if(!--argc)
        return 1;
      config.server_port = strtol(*(++argv),&s,10);
      if(*s)
        return 1;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-i") == 0) {
      config.iprompt = 1;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-v") == 0) {
      version();
      exit(0);
    } else
    if (strcmp(*argv, "-bpb") == 0) {
      config.bp.bpb_sim = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-hazards") == 0) {
      config.dependstats = 0;
      config.dependency = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-history") == 0) {
      config.history = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-superscalar") == 0) {
      config.superscalar = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-fast") == 0) {
      config.superscalar = 0;
      config.history = 0;
      config.dependstats = 0;
      config.dependency = 0;
      config.bp.bpb_sim = 0;
      config.bp.btic_sim = 0;
      config.slp = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-btic") == 0) {
      config.bp.btic_sim = 0;
      argv++; argc--;
    } else
    if (strcmp(*argv, "-upr") == 0) {
      argv++; argc--;
      val = strtoul(*argv, NULL, 0);
      mtspr(SPR_UPR, val);
      argv++; argc--;
    } else
    if (strcmp(*argv, "-ver") == 0) {
      argv++; argc--;
      val = strtoul(*argv, NULL, 0);
      setsprbits(SPR_VR, SPR_VR_VER, val);
      argv++; argc--;
    } else
    if (strcmp(*argv, "-rev") == 0) {
      argv++; argc--;
      val = strtoul(*argv, NULL, 0);
      setsprbits(SPR_VR, SPR_VR_REV, val);
      argv++; argc--;
    } else
    if (strcmp(*argv, "-profile") == 0) {
      config.profile = 1;
      argv++; argc--;
    } else {
      printf("Unknown option: %s\n", *argv);
      return 1;
    }
  }
 
  if (!argc)
    return 0;
 
  return 0;
}
 
void print_config()
{
  printf("Machine initialization...\n");
  if (testsprbits(SPR_UPR, SPR_UPR_DCP))
    printf("Data cache tag: %s\n", config.dc.tagtype == VIRTUAL ? "virtual" : "physical");
  else
    printf("No data cache.\n");
  if (testsprbits(SPR_UPR, SPR_UPR_ICP))
    printf("Insn cache tag: %s\n", config.ic.tagtype == VIRTUAL ? "virtual" : "physical");
  else
    printf("No instruction cache.\n");
  if (config.bp.bpb_sim)
    printf("BPB simulation on.\n");
  else
    printf("BPB simulation off.\n");
  if (config.bp.btic_sim)
    printf("BTIC simulation on.\n");
  else
    printf("BTIC simulation off.\n");
  printf("Clock cycle: %d ns\n", config.clkcycle_ns);
  /*printf("RAM: 0x%x to 0x%x (%d KB)\n\n", config.ram.startaddr, config.ram.endaddr);
    (config.ram.endaddr - config.ram.startaddr) / 1024); MM170901 different memory scheme.  */
 
  if (config.simdebug)
    printf("simdebug on, ");
  else
    printf("simdebug off, ");
  if (config.iprompt)
    printf("interactive prompt on\n");
  else
    printf("interactive prompt off\n");
}
 
 
char memory_file[256] = "sim.mem";
 
char *sections[] = {
  "",
  "mc"
};
 
/* Parameter definitions */
struct config_params {
  int section;
  char *name;
  char *type;
  void *addr;  
} config_params[] = {
  {1, "memory_table_file", "%255s", (void *)(&config.mc.memory_table_file[0])},
  {1, "enable",            "%i",    (void *)(&config.mc.enable)},
  {1, "POC",               "%i",    (void *)(&config.mc.POC)}
};
 
/* Read environment from a script file. Does not fail - assumes defaukt configuration instead.
   The syntax of script file is:
   param = value
   section x
     data
     param = value
   end
 
   Example:
   section mc
     memory_table_file = sim.mem
     enable = 1
     POC = 0x47892344
   end
 
 */
 
void read_script_file (char *filename)
{  
	FILE *f;
	unsigned long memory_needed = 0;
	char *home = getenv("HOME");
	char ctmp[STR_SIZE];
	int local = 1;
	int section = 0;
 
	sprintf(ctmp, "%s/.or1k/%s", home, filename);
	if ((f = fopen (filename, "rt")) != NULL
			|| home != NULL && !(local = 0) && (f = fopen (ctmp, "rt")) != NULL) {
		unsigned long start, length;
		char type[STR_SIZE];
		int nparam;
		int rd, wd;
		printf ("Reading script file from '%s':\n", local ? filename : ctmp);
    while (!feof(f)) {
      char param[STR_SIZE];
      if (fscanf(f, "%s ", &param) != 1) break;
      /* Is this a sections? */
      if (strcmp (param, "section") == 0) {
        int i;
        section = 0;
        if (fscanf (f, "%s\n", &param) != 1) {
          fprintf (stderr, "%s: ERROR: Section name required.\n", local ? filename : ctmp);
          exit (-1);
        }
        for (i = 1; i < sizeof(sections) / sizeof(char *); i++)
          if (strcmp (sections[i], param) == 0) {
            section = i;
            break;
          }
        if (!section) {
          fprintf (stderr, "%s: WARNING: Unknown section: %s; ignoring.\n", local ? filename : ctmp, param);
          /* just skip section */
          while (fscanf (f, "%s\n", &param) != 1 && strcmp (param, "end"));
        }
      } else if (strcmp (param, "end") == 0) {
        section = 0;
      } else {
        int i, found = -1;        
        for (i = 0; i < sizeof(config_params)/sizeof(struct config_params); i++)
          if (config_params[i].section == section && strcmp (config_params[i].name, param) == 0) {
            found = i;
            break;
          }
        if (found < 0) {
          fprintf (stderr, "%s: WARNING: Invalid parameter: %s; ignoring.\n", local ? filename : ctmp, param);
          fscanf (f, "%s\n", &param);
          continue;
        }
 
        /* Parse parameter value */
        {
          char fmt[8];
          sprintf (fmt, "= %s\n", config_params[found].type);
          fscanf (f, fmt, config_params[found].addr);
        }
      }
    }
		fclose (f);
		printf ("\n");
	} else {
		fprintf (stderr, "Cannot read script file from '%s',\nneither '%s'; assuming standard configuration.\n", filename, ctmp);
	}
 
	/* Initialize memory table.  */
	sim_read_memory_table (config.mc.memory_table_file);
}