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dpavlin |
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/* |
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* Cisco C7200 (Predator) ROM emulation |
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* Copyright (c) 2006 Christophe Fillot. All rights reserved. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <errno.h> |
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#include "mips64.h" |
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#include "dynamips.h" |
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#include "memory.h" |
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#include "device.h" |
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/* Embedded ROM */ |
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static m_uint8_t microcode[] = { |
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#include "microcode_dump.inc" |
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}; |
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/* ROM private data */ |
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struct rom_data { |
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vm_obj_t vm_obj; |
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struct vdevice dev; |
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m_uint8_t *rom_ptr; |
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m_uint32_t rom_size; |
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}; |
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/* |
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* dev_rom_access() |
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*/ |
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void *dev_rom_access(cpu_mips_t *cpu,struct vdevice *dev, |
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m_uint32_t offset,u_int op_size,u_int op_type, |
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m_uint64_t *data) |
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{ |
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struct rom_data *d = dev->priv_data; |
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if (op_type == MTS_WRITE) { |
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cpu_log(cpu,"ROM","write attempt at address 0x%llx (data=0x%llx)\n", |
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dev->phys_addr+offset,*data); |
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return NULL; |
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} |
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if (offset >= d->rom_size) { |
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*data = 0; |
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return NULL; |
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} |
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return((void *)(d->rom_ptr + offset)); |
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} |
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/* Shutdown a ROM device */ |
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void dev_rom_shutdown(vm_instance_t *vm,struct rom_data *d) |
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{ |
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if (d != NULL) { |
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/* Remove the device */ |
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dev_remove(vm,&d->dev); |
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/* Free the structure itself */ |
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free(d); |
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} |
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} |
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/* Initialize a ROM zone */ |
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int dev_rom_init(vm_instance_t *vm,char *name,m_uint64_t paddr,m_uint32_t len) |
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{ |
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struct rom_data *d; |
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/* allocate the private data structure */ |
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if (!(d = malloc(sizeof(*d)))) { |
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fprintf(stderr,"ROM: unable to create device.\n"); |
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return(-1); |
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} |
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memset(d,0,sizeof(*d)); |
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d->rom_ptr = microcode; |
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d->rom_size = sizeof(microcode); |
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vm_object_init(&d->vm_obj); |
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d->vm_obj.name = name; |
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d->vm_obj.data = d; |
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d->vm_obj.shutdown = (vm_shutdown_t)dev_rom_shutdown; |
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dev_init(&d->dev); |
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d->dev.name = name; |
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d->dev.priv_data = d; |
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d->dev.phys_addr = paddr; |
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d->dev.phys_len = len; |
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d->dev.flags = VDEVICE_FLAG_CACHING; |
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d->dev.handler = dev_rom_access; |
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/* Map this device to the VM */ |
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vm_bind_device(vm,&d->dev); |
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vm_object_add(vm,&d->vm_obj); |
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return(0); |
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} |