1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* PowerMac NVRAM emulation
*
* Copyright (c) 2005-2007 Fabrice Bellard
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/hw.h"
#include "hw/nvram/openbios_firmware_abi.h"
#include "sysemu/sysemu.h"
#include "hw/ppc/mac.h"
#include <zlib.h>
/* debug NVR */
//#define DEBUG_NVR
#ifdef DEBUG_NVR
#define NVR_DPRINTF(fmt, ...) \
do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0)
#else
#define NVR_DPRINTF(fmt, ...)
#endif
#define DEF_SYSTEM_SIZE 0xc10
/* macio style NVRAM device */
static void macio_nvram_writeb(void *opaque, hwaddr addr,
uint64_t value, unsigned size)
{
MacIONVRAMState *s = opaque;
addr = (addr >> s->it_shift) & (s->size - 1);
s->data[addr] = value;
NVR_DPRINTF("writeb addr %04" PHYS_PRIx " val %" PRIx64 "\n", addr, value);
}
static uint64_t macio_nvram_readb(void *opaque, hwaddr addr,
unsigned size)
{
MacIONVRAMState *s = opaque;
uint32_t value;
addr = (addr >> s->it_shift) & (s->size - 1);
value = s->data[addr];
NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value);
return value;
}
static const MemoryRegionOps macio_nvram_ops = {
.read = macio_nvram_readb,
.write = macio_nvram_writeb,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.endianness = DEVICE_BIG_ENDIAN,
};
static const VMStateDescription vmstate_macio_nvram = {
.name = "macio_nvram",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size),
VMSTATE_END_OF_LIST()
}
};
static void macio_nvram_reset(DeviceState *dev)
{
}
static void macio_nvram_realizefn(DeviceState *dev, Error **errp)
{
SysBusDevice *d = SYS_BUS_DEVICE(dev);
MacIONVRAMState *s = MACIO_NVRAM(dev);
s->data = g_malloc0(s->size);
memory_region_init_io(&s->mem, OBJECT(s), &macio_nvram_ops, s,
"macio-nvram", s->size << s->it_shift);
sysbus_init_mmio(d, &s->mem);
}
static void macio_nvram_unrealizefn(DeviceState *dev, Error **errp)
{
MacIONVRAMState *s = MACIO_NVRAM(dev);
g_free(s->data);
}
static Property macio_nvram_properties[] = {
DEFINE_PROP_UINT32("size", MacIONVRAMState, size, 0),
DEFINE_PROP_UINT32("it_shift", MacIONVRAMState, it_shift, 0),
DEFINE_PROP_END_OF_LIST()
};
static void macio_nvram_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = macio_nvram_realizefn;
dc->unrealize = macio_nvram_unrealizefn;
dc->reset = macio_nvram_reset;
dc->vmsd = &vmstate_macio_nvram;
dc->props = macio_nvram_properties;
}
static const TypeInfo macio_nvram_type_info = {
.name = TYPE_MACIO_NVRAM,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MacIONVRAMState),
.class_init = macio_nvram_class_init,
};
static void macio_nvram_register_types(void)
{
type_register_static(&macio_nvram_type_info);
}
/* Set up a system OpenBIOS NVRAM partition */
static void pmac_format_nvram_partition_of(MacIONVRAMState *nvr, int off,
int len)
{
unsigned int i;
uint32_t start = off, end;
struct OpenBIOS_nvpart_v1 *part_header;
// OpenBIOS nvram variables
// Variable partition
part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
part_header->signature = OPENBIOS_PART_SYSTEM;
pstrcpy(part_header->name, sizeof(part_header->name), "system");
end = start + sizeof(struct OpenBIOS_nvpart_v1);
for (i = 0; i < nb_prom_envs; i++)
end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]);
// End marker
nvr->data[end++] = '\0';
end = start + ((end - start + 15) & ~15);
/* XXX: OpenBIOS is not able to grow up a partition. Leave some space for
new variables. */
if (end < DEF_SYSTEM_SIZE)
end = DEF_SYSTEM_SIZE;
OpenBIOS_finish_partition(part_header, end - start);
// free partition
start = end;
part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
part_header->signature = OPENBIOS_PART_FREE;
pstrcpy(part_header->name, sizeof(part_header->name), "free");
end = len;
OpenBIOS_finish_partition(part_header, end - start);
}
#define OSX_NVRAM_SIGNATURE (0x5A)
/* Set up a Mac OS X NVRAM partition */
static void pmac_format_nvram_partition_osx(MacIONVRAMState *nvr, int off,
int len)
{
uint32_t start = off;
struct OpenBIOS_nvpart_v1 *part_header;
unsigned char *data = &nvr->data[start];
/* empty partition */
part_header = (struct OpenBIOS_nvpart_v1 *)data;
part_header->signature = OSX_NVRAM_SIGNATURE;
pstrcpy(part_header->name, sizeof(part_header->name), "wwwwwwwwwwww");
OpenBIOS_finish_partition(part_header, len);
/* Generation */
stl_be_p(&data[20], 2);
/* Adler32 checksum */
stl_be_p(&data[16], adler32(0, &data[20], len - 20));
}
/* Set up NVRAM with OF and OSX partitions */
void pmac_format_nvram_partition(MacIONVRAMState *nvr, int len)
{
/*
* Mac OS X expects side "B" of the flash at the second half of NVRAM,
* so we use half of the chip for OF and the other half for a free OSX
* partition.
*/
pmac_format_nvram_partition_of(nvr, 0, len / 2);
pmac_format_nvram_partition_osx(nvr, len / 2, len / 2);
}
type_init(macio_nvram_register_types)
|
