dev_c3600.c

思科路由器仿真器,用来仿7200系列得,可以在电脑上模拟路由器-Cisco router simulator, used to fake a 7200 series can be simulated

      case 4:
         if (!cisco_eeprom_v4_find_field(&router->mb_eeprom,0xC3,&offset)) {
            cisco_eeprom_set_region(&router->mb_eeprom,offset,
                                    addr->eth_addr_byte,6);
         }
         break;

      default:
         vm_error(router->vm,"c3600_burn_mac_addr: unable to handle "
                  "EEPROM version %u\n",eeprom_ver);
         return(-1);
   }

   return(0);
}

/* Set chassis MAC address */
int c3600_chassis_set_mac_addr(c3600_t *router,char *mac_addr)
{
   if (parse_mac_addr(&router->mac_addr,mac_addr) == -1) {
      vm_error(router->vm,"unable to parse MAC address '%s'.\n",mac_addr);
      return(-1);
   }

   /* Set the chassis base MAC address */
   c3600_burn_mac_addr(router,&router->mac_addr);
   return(0);
}

/* Set the chassis type */
int c3600_chassis_set_type(c3600_t *router,char *chassis_type)
{  
   struct c3600_chassis_driver *driver;

   if (router->vm->status == VM_STATUS_RUNNING) {
      vm_error(router->vm,"unable to change chassis type when online.\n");
      return(-1);
   }

   if (!(driver = c3600_chassis_get_driver(chassis_type))) {
      vm_error(router->vm,"unknown chassis type '%s'.\n",chassis_type);
      return(-1);
   }

   router->chassis_driver = driver;

   /* Copy the mainboard EEPROM */
   if (cisco_eeprom_copy(&router->mb_eeprom,driver->eeprom) == -1) {
      vm_error(router->vm,"unable to set chassis EEPROM '%s'.\n",chassis_type);
      return(-1);
   }

   /* Set the chassis base MAC address */
   c3600_burn_mac_addr(router,&router->mac_addr);
   return(0);
}

/* Get the chassis ID */
int c3600_chassis_get_id(c3600_t *router)
{
   if (router->chassis_driver)
      return(router->chassis_driver->chassis_id);

   return(-1);
}

/* Show the list of available chassis drivers */
void c3600_chassis_show_drivers(void)
{
   int i;

   printf("Available C3600 chassis drivers:\n");

   for(i=0;chassis_drivers[i].chassis_type;i++) {
      printf("  * %s %s\n",
             chassis_drivers[i].chassis_type,
             !chassis_drivers[i].supported ? "(NOT WORKING)" : "");
   }
   
   printf("\n");
}

/* Create the main PCI bus for a GT64010 based system */
static int c3600_init_gt64010(c3600_t *router)
{
   if (!(router->vm->pci_bus[0] = pci_bus_create("PCI bus",0))) {
      vm_error(router->vm,"unable to create PCI data.\n");
      return(-1);
   }
   
   return(dev_gt64010_init(router->vm,"gt64010",C3600_GT64K_ADDR,0x1000,
                           C3600_GT64K_IRQ));
}

/* Create the two main PCI busses for a GT64120 based system */
static int c3600_init_gt64120(c3600_t *router)
{
   vm_instance_t *vm = router->vm;

   vm->pci_bus[0] = pci_bus_create("PCI bus #0",0);
   vm->pci_bus[1] = pci_bus_create("PCI bus #1",0);

   if (!vm->pci_bus[0] || !vm->pci_bus[1]) {
      vm_error(router->vm,"unable to create PCI data.\n");
      return(-1);
   }
   
   return(dev_gt64120_init(vm,"gt64120",C3600_GT64K_ADDR,0x1000,
                           C3600_GT64K_IRQ));
}

/* Initialize a Cisco 3620 */
static int c3620_init(c3600_t *router)
{
   vm_instance_t *vm = router->vm;
   int i;

   /* Set the processor type: R4700 */
   mips64_set_prid(vm->boot_cpu,MIPS_PRID_R4700);

   /* Initialize the Galileo GT-64010 PCI controller */
   if (c3600_init_gt64010(router) == -1)
      return(-1);

   /* Initialize PCI map (no PCI bridge for this chassis) */
   for(i=0;i<C3600_MAX_NM_BAYS;i++)
      router->nm_bay[i].pci_map = vm->pci_bus[0];

   vm->elf_machine_id = C3620_ELF_MACHINE_ID;
   return(0);
}

/* Initialize a Cisco 3640 */
static int c3640_init(c3600_t *router)
{
   vm_instance_t *vm = router->vm;
   struct nm_bay_info *bay;
   int i;

   /* Set the processor type: R4700 */
   mips64_set_prid(vm->boot_cpu,MIPS_PRID_R4700);

   /* Initialize the Galileo GT-64010 PCI controller */
   if (c3600_init_gt64010(router) == -1)
      return(-1);

   /* Create the NM PCI busses */
   vm->pci_bus_pool[0] = pci_bus_create("NM Slots 0,2",-1);
   vm->pci_bus_pool[1] = pci_bus_create("NM Slots 1,3",-1);

   /* Initialize PCI map and PCI bridges */
   for(i=0;i<=3;i++) {
      bay = c3600_nm_get_bay_info(3640,i);

      /* Map the NM PCI bus */
      router->nm_bay[i].pci_map = vm->pci_bus_pool[i & 1];

      if (bay && (bay->pci_bridge_device != -1))
         dev_dec21052_init(vm->pci_bus[0],bay->pci_bridge_device,
                           router->nm_bay[i].pci_map);
   }

   vm->elf_machine_id = C3640_ELF_MACHINE_ID;
   return(0);
}

/* Initialize a Cisco 3660 */
static int c3660_init(c3600_t *router)
{   
   vm_instance_t *vm = router->vm;
   struct nm_bay_info *bay;
   char bus_name[128];
   int i;

   /* Set the processor type: R5271 */
   mips64_set_prid(vm->boot_cpu,MIPS_PRID_R527x);

   /* Initialize the Galileo GT-64120 PCI controller */
   if (c3600_init_gt64120(router) == -1)
      return(-1);

   /* Create the NM PCI busses */
   for(i=1;i<=6;i++) {
      snprintf(bus_name,sizeof(bus_name),"NM Slot %d",i);
      vm->pci_bus_pool[i] = pci_bus_create(bus_name,-1);
   }

   /* Slot 0 is mapped to the first bus of GT64120 */
   router->nm_bay[0].pci_map = vm->pci_bus[0];

   /* Initialize PCI map and PCI bridges */
   for(i=1;i<C3600_MAX_NM_BAYS;i++) {
      bay = c3600_nm_get_bay_info(3660,i);

      /* Map the NM PCI bus */
      router->nm_bay[i].pci_map = vm->pci_bus_pool[i];

      /* Slots 1-6 are mapped to the second bus of GT64120 */
      if (bay && (bay->pci_bridge_device != -1))
         dev_dec21152_init(vm->pci_bus[1],bay->pci_bridge_device,
                           router->nm_bay[i].pci_map);
   }

   /* The motherboard has 2 integrated FastEthernet ports */
   c3600_nm_add_binding(router,"Leopard-2FE",0);

   vm->elf_machine_id = C3640_ELF_MACHINE_ID;
   return(0);
}

/* Show C3600 hardware info */
void c3600_show_hardware(c3600_t *router)
{
   vm_instance_t *vm = router->vm;

   printf("C3600 instance '%s' (id %d):\n",vm->name,vm->instance_id);

   printf("  VM Status  : %d\n",vm->status);
   printf("  RAM size   : %u Mb\n",vm->ram_size);
   printf("  NVRAM size : %u Kb\n",vm->nvram_size);
   printf("  Chassis    : %s\n",router->chassis_driver->chassis_type);
   printf("  IOS image  : %s\n\n",vm->ios_image);

   if (vm->debug_level > 0) {
      dev_show_list(vm);
      pci_dev_show_list(vm->pci_bus[0]);
      pci_dev_show_list(vm->pci_bus[1]);
      printf("\n");
   }
}

/* Initialize default parameters for a C3600 */
void c3600_init_defaults(c3600_t *router)
{   
   vm_instance_t *vm = router->vm;   
   n_eth_addr_t *m;
   m_uint16_t pid;

   pid = (m_uint16_t)getpid();

   /* Generate a chassis MAC address based on the instance ID */
   m = &router->mac_addr;
   m->eth_addr_byte[0] = vm_get_mac_addr_msb(vm);
   m->eth_addr_byte[1] = vm->instance_id & 0xFF;
   m->eth_addr_byte[2] = pid >> 8;
   m->eth_addr_byte[3] = pid & 0xFF;
   m->eth_addr_byte[4] = 0x00;
   m->eth_addr_byte[5] = 0x00;

   c3600_init_eeprom_groups(router);
   c3600_chassis_set_type(router,C3600_DEFAULT_CHASSIS);

   vm->ram_mmap          = C3600_DEFAULT_RAM_MMAP;
   vm->ram_size          = C3600_DEFAULT_RAM_SIZE;
   vm->rom_size          = C3600_DEFAULT_ROM_SIZE;
   vm->nvram_size        = C3600_DEFAULT_NVRAM_SIZE;
   vm->conf_reg_setup    = C3600_DEFAULT_CONF_REG;
   vm->clock_divisor     = C3600_DEFAULT_CLOCK_DIV;
   vm->nvram_rom_space   = C3600_NVRAM_ROM_RES_SIZE;
   router->nm_iomem_size = C3600_DEFAULT_IOMEM_SIZE;

   vm->pcmcia_disk_size[0] = C3600_DEFAULT_DISK0_SIZE;
   vm->pcmcia_disk_size[1] = C3600_DEFAULT_DISK1_SIZE;

   /* Enable NVRAM operations to load/store configs */
   vm->nvram_extract_config = c3600_nvram_extract_config;
   vm->nvram_push_config = c3600_nvram_push_config;
}

/* Initialize the C3600 Platform */
int c3600_init_platform(c3600_t *router)
{
   vm_instance_t *vm = router->vm;
   struct c3600_nm_bay *nm_bay;
   cpu_mips_t *cpu;
   int i;

   /* Copy config register setup into "active" config register */
   vm->conf_reg = vm->conf_reg_setup;

   /* Create Console and AUX ports */
   vm_init_vtty(vm);

   /* Create a CPU group */
   vm->cpu_group = cpu_group_create("System CPU");

   /* Initialize the virtual MIPS processor */
   if (!(cpu = cpu_create(vm,0))) {
      vm_error(vm,"unable to create CPU!\n");
      return(-1);
   }

   /* Add this CPU to the system CPU group */
   cpu_group_add(vm->cpu_group,cpu);
   vm->boot_cpu = cpu;

   /* Mark the Network IO interrupt as high priority */
   cpu->irq_idle_preempt[C3600_NETIO_IRQ] = TRUE;
   cpu->irq_idle_preempt[C3600_GT64K_IRQ] = TRUE;
   cpu->irq_idle_preempt[C3600_DUART_IRQ] = TRUE;

   /* Copy some parameters from VM to CPU (idle PC, ...) */
   cpu->idle_pc = vm->idle_pc;

   if (vm->timer_irq_check_itv)
      cpu->timer_irq_check_itv = vm->timer_irq_check_itv;

   /* Get chassis specific driver */
   if (!router->chassis_driver) {
      vm_error(vm,"no chassis defined.\n");
      return(-1);
   }

   /* Remote emulator control */
   dev_remote_control_init(vm,0x16000000,0x1000);

   /* Bootflash */
   dev_bootflash_init(vm,"bootflash",C3600_BOOTFLASH_ADDR,(8 * 1048576));

   /* NVRAM and calendar */
   dev_nvram_init(vm,"nvram",
                  C3600_NVRAM_ADDR,vm->nvram_size*1024,&vm->conf_reg);

   /* Bit-bucket zone */
   dev_zero_init(vm,"zero",C3600_BITBUCKET_ADDR,0xc00000);

   /* IO FPGA */
   if (dev_c3600_iofpga_init(router,C3600_IOFPGA_ADDR,0x40000) == -1)
      return(-1);

   /* PCI IO space */
   if (!(vm->pci_io_space = pci_io_data_init(vm,C3600_PCI_IO_ADDR)))
      return(-1);

   /* Initialize the chassis */
   if (router->chassis_driver->chassis_init(router) == -1)
      return(-1);

   /* Initialize RAM */
   vm_ram_init(vm,0x00000000ULL);

   /* Initialize ROM */
   if (!vm->rom_filename) {
      /* use embedded ROM */
      dev_rom_init(vm,"rom",C3600_ROM_ADDR,vm->rom_size*1048576);
   } else {
      /* use alternate ROM */
      dev_ram_init(vm,"rom",TRUE,TRUE,NULL,
                   C3600_ROM_ADDR,vm->rom_size*1048576);
   }

   /* Initialize the NS16552 DUART */
   dev_ns16552_init(vm,C3600_DUART_ADDR,0x1000,3,C3600_DUART_IRQ,
                    vm->vtty_con,vm->vtty_aux);

   /* Cirrus Logic PD6729 (PCI-to-PCMCIA host adapter) */
   dev_clpd6729_init(vm,vm->pci_bus[0],20,vm->pci_io_space,0x4402,0x4403);

   /* Initialize Network Modules */
   for(i=0;i<C3600_MAX_NM_BAYS;i++) {
      nm_bay = &router->nm_bay[i];

      if (!nm_bay->dev_type) 
         continue;

      if (c3600_nm_init(router,i) == -1) {
         vm_error(vm,"unable to create Network Module \"%s\"\n",
                  nm_bay->dev_type);
         return(-1);
      }
   }

   /* Show device list */
   c3600_show_hardware(router);
   return(0);
}

/* Boot the IOS image */
int c3600_boot_ios(c3600_t *router)
{   
   vm_instance_t *vm = router->vm;

   if (!vm->boot_cpu)
      return(-1);

   /* Suspend CPU activity since we will restart directly from ROM */
   vm_suspend(vm);

   /* Check that CPU activity is really suspended */
   if (cpu_group_sync_state(vm->cpu_group) == -1) {
      vm_error(vm,"unable to sync with system CPUs.\n");
      return(-1);
   }

   /* Reset the boot CPU */
   mips64_reset(vm->boot_cpu);

   /* Load IOS image */
   if (mips64_load_elf_image(vm->boot_cpu,vm->ios_image,
                             (vm->ghost_status == VM_GHOST_RAM_USE),
                             &vm->ios_entry_point) < 0) 
   {
      vm_error(vm,"failed to load Cisco IOS image '%s'.\n",vm->ios_image);
      return(-1);
   }

   /* Launch the simulation */
   printf("\nC3600 '%s': starting simulation (CPU0 PC=0x%llx), "
          "JIT %sabled.\n",
          vm->name,vm->boot_cpu->pc,vm->jit_use ? "en":"dis");

   vm_log(vm,"C3600_BOOT",
          "starting instance (CPU0 PC=0x%llx,idle_pc=0x%llx,JIT %s)\n",
          vm->boot_cpu->pc,vm->boot_cpu->idle_pc,vm->jit_use ? "on":"off");

   /* Start main CPU */
   if (vm->ghost_status != VM_GHOST_RAM_GENERATE) {
      vm->status = VM_STATUS_RUNNING;
      cpu_start(vm->boot_cpu);
   } else {
      vm->status = VM_STATUS_SHUTDOWN;
   }
   return(0);
}

/* Initialize a Cisco 3600 instance */
int c3600_init_instance(c3600_t *router)
{   
   vm_instance_t *vm = router->vm;
   m_uint32_t rom_entry_point;
   cpu_mips_t *cpu0;

   if (!vm->ios_image) {
      vm_error(vm,"no Cisco IOS image defined.");
      return(-1);
   }

   /* Initialize the C3600 platform */
   if (c3600_init_platform(router) == -1) {
      vm_error(vm,"unable to initialize the platform hardware.\n");
      return(-1);
   }

   /* Load IOS configuration file */
   if (vm->ios_config != NULL) {
      vm_nvram_push_config(vm,vm->ios_config);
      vm->conf_reg &= ~0x40;
   }

   /* Load ROM (ELF image or embedded) */
   cpu0 = vm->boot_cpu;
   rom_entry_point = (m_uint32_t)MIPS_ROM_PC;

   if ((vm->rom_filename != NULL) &&
       (mips64_load_elf_image(cpu0,vm->rom_filename,0,&rom_entry_point) < 0))
   {
      vm_error(vm,"unable to load alternate ROM '%s', "
               "fallback to embedded ROM.\n\n",vm->rom_filename);
      vm->rom_filename = NULL;
   }

   /* Load symbol file */
   if (vm->sym_filename) {
      mips64_sym_load_file(cpu0,vm->sym_filename);
      cpu0->sym_trace = 1;
   }

   return(c3600_boot_ios(router));
}

/* Stop a Cisco 3600 instance */
int c3600_stop_instance(c3600_t *router)
{
   vm_instance_t *vm = router->vm;

   printf("\nC3600 '%s': stopping simulation.\n",vm->name);
   vm_log(vm,"C3600_STOP","stopping simulation.\n");

   /* Stop all CPUs */
   if (vm->cpu_group != NULL) {
      vm_stop(vm);
      
      if (cpu_group_sync_state(vm->cpu_group) == -1) {
         vm_error(vm,"unable to sync with system CPUs.\n");
         return(-1);
      }
   }

   /* Free resources that were used during execution to emulate hardware */
   c3600_nm_shutdown_all(router);
   vm_hardware_shutdown(vm);
   return(0);
}