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26#include "qemu/osdep.h"
27#include "hw/hw.h"
28#include "hw/nvram/chrp_nvram.h"
29#include "hw/ppc/mac.h"
30#include "qemu/cutils.h"
31#include "qemu/module.h"
32#include <zlib.h>
33
34
35
36
37#ifdef DEBUG_NVR
38#define NVR_DPRINTF(fmt, ...) \
39 do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0)
40#else
41#define NVR_DPRINTF(fmt, ...)
42#endif
43
44#define DEF_SYSTEM_SIZE 0xc10
45
46
47static void macio_nvram_writeb(void *opaque, hwaddr addr,
48 uint64_t value, unsigned size)
49{
50 MacIONVRAMState *s = opaque;
51
52 addr = (addr >> s->it_shift) & (s->size - 1);
53 s->data[addr] = value;
54 NVR_DPRINTF("writeb addr %04" HWADDR_PRIx " val %" PRIx64 "\n",
55 addr, value);
56}
57
58static uint64_t macio_nvram_readb(void *opaque, hwaddr addr,
59 unsigned size)
60{
61 MacIONVRAMState *s = opaque;
62 uint32_t value;
63
64 addr = (addr >> s->it_shift) & (s->size - 1);
65 value = s->data[addr];
66 NVR_DPRINTF("readb addr %04" HWADDR_PRIx " val %" PRIx32 "\n",
67 addr, value);
68
69 return value;
70}
71
72static const MemoryRegionOps macio_nvram_ops = {
73 .read = macio_nvram_readb,
74 .write = macio_nvram_writeb,
75 .valid.min_access_size = 1,
76 .valid.max_access_size = 4,
77 .impl.min_access_size = 1,
78 .impl.max_access_size = 1,
79 .endianness = DEVICE_BIG_ENDIAN,
80};
81
82static const VMStateDescription vmstate_macio_nvram = {
83 .name = "macio_nvram",
84 .version_id = 1,
85 .minimum_version_id = 1,
86 .fields = (VMStateField[]) {
87 VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, size),
88 VMSTATE_END_OF_LIST()
89 }
90};
91
92
93static void macio_nvram_reset(DeviceState *dev)
94{
95}
96
97static void macio_nvram_realizefn(DeviceState *dev, Error **errp)
98{
99 SysBusDevice *d = SYS_BUS_DEVICE(dev);
100 MacIONVRAMState *s = MACIO_NVRAM(dev);
101
102 s->data = g_malloc0(s->size);
103
104 memory_region_init_io(&s->mem, OBJECT(s), &macio_nvram_ops, s,
105 "macio-nvram", s->size << s->it_shift);
106 sysbus_init_mmio(d, &s->mem);
107}
108
109static void macio_nvram_unrealizefn(DeviceState *dev, Error **errp)
110{
111 MacIONVRAMState *s = MACIO_NVRAM(dev);
112
113 g_free(s->data);
114}
115
116static Property macio_nvram_properties[] = {
117 DEFINE_PROP_UINT32("size", MacIONVRAMState, size, 0),
118 DEFINE_PROP_UINT32("it_shift", MacIONVRAMState, it_shift, 0),
119 DEFINE_PROP_END_OF_LIST()
120};
121
122static void macio_nvram_class_init(ObjectClass *oc, void *data)
123{
124 DeviceClass *dc = DEVICE_CLASS(oc);
125
126 dc->realize = macio_nvram_realizefn;
127 dc->unrealize = macio_nvram_unrealizefn;
128 dc->reset = macio_nvram_reset;
129 dc->vmsd = &vmstate_macio_nvram;
130 dc->props = macio_nvram_properties;
131 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
132}
133
134static const TypeInfo macio_nvram_type_info = {
135 .name = TYPE_MACIO_NVRAM,
136 .parent = TYPE_SYS_BUS_DEVICE,
137 .instance_size = sizeof(MacIONVRAMState),
138 .class_init = macio_nvram_class_init,
139};
140
141static void macio_nvram_register_types(void)
142{
143 type_register_static(&macio_nvram_type_info);
144}
145
146
147static void pmac_format_nvram_partition_of(MacIONVRAMState *nvr, int off,
148 int len)
149{
150 int sysp_end;
151
152
153 sysp_end = chrp_nvram_create_system_partition(&nvr->data[off],
154 DEF_SYSTEM_SIZE) + off;
155
156
157 chrp_nvram_create_free_partition(&nvr->data[sysp_end], len - sysp_end);
158}
159
160#define OSX_NVRAM_SIGNATURE (0x5A)
161
162
163static void pmac_format_nvram_partition_osx(MacIONVRAMState *nvr, int off,
164 int len)
165{
166 uint32_t start = off;
167 ChrpNvramPartHdr *part_header;
168 unsigned char *data = &nvr->data[start];
169
170
171 part_header = (ChrpNvramPartHdr *)data;
172 part_header->signature = OSX_NVRAM_SIGNATURE;
173 pstrcpy(part_header->name, sizeof(part_header->name), "wwwwwwwwwwww");
174
175 chrp_nvram_finish_partition(part_header, len);
176
177
178 stl_be_p(&data[20], 2);
179
180
181 stl_be_p(&data[16], adler32(0, &data[20], len - 20));
182}
183
184
185void pmac_format_nvram_partition(MacIONVRAMState *nvr, int len)
186{
187
188
189
190
191
192 pmac_format_nvram_partition_of(nvr, 0, len / 2);
193 pmac_format_nvram_partition_osx(nvr, len / 2, len / 2);
194}
195type_init(macio_nvram_register_types)
196