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