/[dynamips]/upstream/dynamips-0.2.5/dev_rom.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /upstream/dynamips-0.2.5/dev_rom.c

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Revision 1 - (show annotations)
Sat Oct 6 16:01:44 2007 UTC (12 years, 1 month ago) by dpavlin
File MIME type: text/plain
File size: 2127 byte(s)
import 0.2.5 from upstream

1 /*
2 * Cisco C7200 (Predator) ROM emulation
3 * Copyright (c) 2006 Christophe Fillot. All rights reserved.
4 */
5
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <time.h>
10 #include <errno.h>
11
12 #include "mips64.h"
13 #include "dynamips.h"
14 #include "memory.h"
15 #include "device.h"
16
17 /* Embedded ROM */
18 static m_uint8_t microcode[] = {
19 #include "microcode_dump.inc"
20 };
21
22 /* ROM private data */
23 struct rom_data {
24 vm_obj_t vm_obj;
25 struct vdevice dev;
26 m_uint8_t *rom_ptr;
27 m_uint32_t rom_size;
28 };
29
30 /*
31 * dev_rom_access()
32 */
33 void *dev_rom_access(cpu_mips_t *cpu,struct vdevice *dev,
34 m_uint32_t offset,u_int op_size,u_int op_type,
35 m_uint64_t *data)
36 {
37 struct rom_data *d = dev->priv_data;
38
39 if (op_type == MTS_WRITE) {
40 cpu_log(cpu,"ROM","write attempt at address 0x%llx (data=0x%llx)\n",
41 dev->phys_addr+offset,*data);
42 return NULL;
43 }
44
45 if (offset >= d->rom_size) {
46 *data = 0;
47 return NULL;
48 }
49
50 return((void *)(d->rom_ptr + offset));
51 }
52
53 /* Shutdown a ROM device */
54 void dev_rom_shutdown(vm_instance_t *vm,struct rom_data *d)
55 {
56 if (d != NULL) {
57 /* Remove the device */
58 dev_remove(vm,&d->dev);
59
60 /* Free the structure itself */
61 free(d);
62 }
63 }
64
65 /* Initialize a ROM zone */
66 int dev_rom_init(vm_instance_t *vm,char *name,m_uint64_t paddr,m_uint32_t len)
67 {
68 struct rom_data *d;
69
70 /* allocate the private data structure */
71 if (!(d = malloc(sizeof(*d)))) {
72 fprintf(stderr,"ROM: unable to create device.\n");
73 return(-1);
74 }
75
76 memset(d,0,sizeof(*d));
77 d->rom_ptr = microcode;
78 d->rom_size = sizeof(microcode);
79
80 vm_object_init(&d->vm_obj);
81 d->vm_obj.name = name;
82 d->vm_obj.data = d;
83 d->vm_obj.shutdown = (vm_shutdown_t)dev_rom_shutdown;
84
85 dev_init(&d->dev);
86 d->dev.name = name;
87 d->dev.priv_data = d;
88 d->dev.phys_addr = paddr;
89 d->dev.phys_len = len;
90 d->dev.flags = VDEVICE_FLAG_CACHING;
91 d->dev.handler = dev_rom_access;
92
93 /* Map this device to the VM */
94 vm_bind_device(vm,&d->dev);
95 vm_object_add(vm,&d->vm_obj);
96 return(0);
97 }

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