root / hw / nvram / mac_nvram.c @ e28bee8e
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1 | 3cbee15b | j_mayer | /*
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2 | 3cbee15b | j_mayer | * PowerMac NVRAM emulation
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3 | 3cbee15b | j_mayer | *
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4 | 3cbee15b | j_mayer | * Copyright (c) 2005-2007 Fabrice Bellard
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5 | 3cbee15b | j_mayer | * Copyright (c) 2007 Jocelyn Mayer
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6 | 3cbee15b | j_mayer | *
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7 | 3cbee15b | j_mayer | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 3cbee15b | j_mayer | * of this software and associated documentation files (the "Software"), to deal
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9 | 3cbee15b | j_mayer | * in the Software without restriction, including without limitation the rights
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10 | 3cbee15b | j_mayer | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 3cbee15b | j_mayer | * copies of the Software, and to permit persons to whom the Software is
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12 | 3cbee15b | j_mayer | * furnished to do so, subject to the following conditions:
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13 | 3cbee15b | j_mayer | *
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14 | 3cbee15b | j_mayer | * The above copyright notice and this permission notice shall be included in
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15 | 3cbee15b | j_mayer | * all copies or substantial portions of the Software.
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16 | 3cbee15b | j_mayer | *
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17 | 3cbee15b | j_mayer | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 3cbee15b | j_mayer | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 3cbee15b | j_mayer | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 3cbee15b | j_mayer | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 3cbee15b | j_mayer | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 3cbee15b | j_mayer | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 3cbee15b | j_mayer | * THE SOFTWARE.
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24 | 3cbee15b | j_mayer | */
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25 | 83c9f4ca | Paolo Bonzini | #include "hw/hw.h" |
26 | 0d09e41a | Paolo Bonzini | #include "hw/sparc/firmware_abi.h" |
27 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
28 | 83c9f4ca | Paolo Bonzini | #include "hw/ppc/mac.h" |
29 | 3cbee15b | j_mayer | |
30 | ea026b2f | blueswir1 | /* debug NVR */
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31 | ea026b2f | blueswir1 | //#define DEBUG_NVR
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32 | ea026b2f | blueswir1 | |
33 | ea026b2f | blueswir1 | #ifdef DEBUG_NVR
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34 | 001faf32 | Blue Swirl | #define NVR_DPRINTF(fmt, ...) \
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35 | 001faf32 | Blue Swirl | do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0) |
36 | ea026b2f | blueswir1 | #else
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37 | 001faf32 | Blue Swirl | #define NVR_DPRINTF(fmt, ...)
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38 | ea026b2f | blueswir1 | #endif
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39 | ea026b2f | blueswir1 | |
40 | bd89f43f | aurel32 | #define DEF_SYSTEM_SIZE 0xc10 |
41 | bd89f43f | aurel32 | |
42 | 3cbee15b | j_mayer | /* Direct access to NVRAM */
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43 | 3743cca7 | Andreas Färber | uint8_t macio_nvram_read(MacIONVRAMState *s, uint32_t addr) |
44 | 3cbee15b | j_mayer | { |
45 | 3cbee15b | j_mayer | uint32_t ret; |
46 | 3cbee15b | j_mayer | |
47 | 3743cca7 | Andreas Färber | if (addr < s->size) {
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48 | 3cbee15b | j_mayer | ret = s->data[addr]; |
49 | 3743cca7 | Andreas Färber | } else {
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50 | 3cbee15b | j_mayer | ret = -1;
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51 | 3743cca7 | Andreas Färber | } |
52 | 3743cca7 | Andreas Färber | NVR_DPRINTF("read addr %04" PRIx32 " val %" PRIx8 "\n", addr, ret); |
53 | 3cbee15b | j_mayer | |
54 | 3cbee15b | j_mayer | return ret;
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55 | 3cbee15b | j_mayer | } |
56 | 3cbee15b | j_mayer | |
57 | 3743cca7 | Andreas Färber | void macio_nvram_write(MacIONVRAMState *s, uint32_t addr, uint8_t val)
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58 | 3cbee15b | j_mayer | { |
59 | 3743cca7 | Andreas Färber | NVR_DPRINTF("write addr %04" PRIx32 " val %" PRIx8 "\n", addr, val); |
60 | 3743cca7 | Andreas Färber | if (addr < s->size) {
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61 | 3cbee15b | j_mayer | s->data[addr] = val; |
62 | 3743cca7 | Andreas Färber | } |
63 | 3cbee15b | j_mayer | } |
64 | 3cbee15b | j_mayer | |
65 | 3cbee15b | j_mayer | /* macio style NVRAM device */
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66 | a8170e5e | Avi Kivity | static void macio_nvram_writeb(void *opaque, hwaddr addr, |
67 | 23c5e4ca | Avi Kivity | uint64_t value, unsigned size)
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68 | 3cbee15b | j_mayer | { |
69 | 3cbee15b | j_mayer | MacIONVRAMState *s = opaque; |
70 | 74e91155 | j_mayer | |
71 | 68af3f24 | blueswir1 | addr = (addr >> s->it_shift) & (s->size - 1);
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72 | 3cbee15b | j_mayer | s->data[addr] = value; |
73 | 3743cca7 | Andreas Färber | NVR_DPRINTF("writeb addr %04" PHYS_PRIx " val %" PRIx64 "\n", addr, value); |
74 | 3cbee15b | j_mayer | } |
75 | 3cbee15b | j_mayer | |
76 | a8170e5e | Avi Kivity | static uint64_t macio_nvram_readb(void *opaque, hwaddr addr, |
77 | 23c5e4ca | Avi Kivity | unsigned size)
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78 | 3cbee15b | j_mayer | { |
79 | 3cbee15b | j_mayer | MacIONVRAMState *s = opaque; |
80 | 3cbee15b | j_mayer | uint32_t value; |
81 | 3cbee15b | j_mayer | |
82 | 68af3f24 | blueswir1 | addr = (addr >> s->it_shift) & (s->size - 1);
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83 | 3cbee15b | j_mayer | value = s->data[addr]; |
84 | ea026b2f | blueswir1 | NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value); |
85 | 3cbee15b | j_mayer | |
86 | 3cbee15b | j_mayer | return value;
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87 | 3cbee15b | j_mayer | } |
88 | 3cbee15b | j_mayer | |
89 | 23c5e4ca | Avi Kivity | static const MemoryRegionOps macio_nvram_ops = { |
90 | 23c5e4ca | Avi Kivity | .read = macio_nvram_readb, |
91 | 23c5e4ca | Avi Kivity | .write = macio_nvram_writeb, |
92 | d8c6d07f | Andreas Färber | .endianness = DEVICE_BIG_ENDIAN, |
93 | 3cbee15b | j_mayer | }; |
94 | 3cbee15b | j_mayer | |
95 | 8e470f8a | Juan Quintela | static const VMStateDescription vmstate_macio_nvram = { |
96 | 8e470f8a | Juan Quintela | .name = "macio_nvram",
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97 | 8e470f8a | Juan Quintela | .version_id = 1,
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98 | 8e470f8a | Juan Quintela | .minimum_version_id = 1,
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99 | 8e470f8a | Juan Quintela | .minimum_version_id_old = 1,
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100 | 8e470f8a | Juan Quintela | .fields = (VMStateField[]) { |
101 | 8e470f8a | Juan Quintela | VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size), |
102 | 8e470f8a | Juan Quintela | VMSTATE_END_OF_LIST() |
103 | 8e470f8a | Juan Quintela | } |
104 | 8e470f8a | Juan Quintela | }; |
105 | 9b64997f | blueswir1 | |
106 | 9b64997f | blueswir1 | |
107 | 95ed3b7c | Andreas Färber | static void macio_nvram_reset(DeviceState *dev) |
108 | 6e6b7363 | blueswir1 | { |
109 | 6e6b7363 | blueswir1 | } |
110 | 6e6b7363 | blueswir1 | |
111 | 95ed3b7c | Andreas Färber | static void macio_nvram_realizefn(DeviceState *dev, Error **errp) |
112 | 3cbee15b | j_mayer | { |
113 | 95ed3b7c | Andreas Färber | SysBusDevice *d = SYS_BUS_DEVICE(dev); |
114 | 95ed3b7c | Andreas Färber | MacIONVRAMState *s = MACIO_NVRAM(dev); |
115 | 74e91155 | j_mayer | |
116 | 95ed3b7c | Andreas Färber | s->data = g_malloc0(s->size); |
117 | 3f7cbbbd | aurel32 | |
118 | 23c5e4ca | Avi Kivity | memory_region_init_io(&s->mem, &macio_nvram_ops, s, "macio-nvram",
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119 | 95ed3b7c | Andreas Färber | s->size << s->it_shift); |
120 | 95ed3b7c | Andreas Färber | sysbus_init_mmio(d, &s->mem); |
121 | 95ed3b7c | Andreas Färber | } |
122 | 95ed3b7c | Andreas Färber | |
123 | 95ed3b7c | Andreas Färber | static void macio_nvram_unrealizefn(DeviceState *dev, Error **errp) |
124 | 95ed3b7c | Andreas Färber | { |
125 | 95ed3b7c | Andreas Färber | MacIONVRAMState *s = MACIO_NVRAM(dev); |
126 | 95ed3b7c | Andreas Färber | |
127 | 95ed3b7c | Andreas Färber | g_free(s->data); |
128 | 95ed3b7c | Andreas Färber | } |
129 | 3cbee15b | j_mayer | |
130 | 95ed3b7c | Andreas Färber | static Property macio_nvram_properties[] = {
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131 | 95ed3b7c | Andreas Färber | DEFINE_PROP_UINT32("size", MacIONVRAMState, size, 0), |
132 | 95ed3b7c | Andreas Färber | DEFINE_PROP_UINT32("it_shift", MacIONVRAMState, it_shift, 0), |
133 | 95ed3b7c | Andreas Färber | DEFINE_PROP_END_OF_LIST() |
134 | 95ed3b7c | Andreas Färber | }; |
135 | 95ed3b7c | Andreas Färber | |
136 | 95ed3b7c | Andreas Färber | static void macio_nvram_class_init(ObjectClass *oc, void *data) |
137 | 95ed3b7c | Andreas Färber | { |
138 | 95ed3b7c | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(oc); |
139 | 95ed3b7c | Andreas Färber | |
140 | 95ed3b7c | Andreas Färber | dc->realize = macio_nvram_realizefn; |
141 | 95ed3b7c | Andreas Färber | dc->unrealize = macio_nvram_unrealizefn; |
142 | 95ed3b7c | Andreas Färber | dc->reset = macio_nvram_reset; |
143 | 95ed3b7c | Andreas Färber | dc->vmsd = &vmstate_macio_nvram; |
144 | 95ed3b7c | Andreas Färber | dc->props = macio_nvram_properties; |
145 | 3cbee15b | j_mayer | } |
146 | 3cbee15b | j_mayer | |
147 | 95ed3b7c | Andreas Färber | static const TypeInfo macio_nvram_type_info = { |
148 | 95ed3b7c | Andreas Färber | .name = TYPE_MACIO_NVRAM, |
149 | 95ed3b7c | Andreas Färber | .parent = TYPE_SYS_BUS_DEVICE, |
150 | 95ed3b7c | Andreas Färber | .instance_size = sizeof(MacIONVRAMState),
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151 | 95ed3b7c | Andreas Färber | .class_init = macio_nvram_class_init, |
152 | 95ed3b7c | Andreas Färber | }; |
153 | 95ed3b7c | Andreas Färber | |
154 | 95ed3b7c | Andreas Färber | static void macio_nvram_register_types(void) |
155 | 74e91155 | j_mayer | { |
156 | 95ed3b7c | Andreas Färber | type_register_static(&macio_nvram_type_info); |
157 | 74e91155 | j_mayer | } |
158 | 74e91155 | j_mayer | |
159 | 95efd11c | blueswir1 | /* Set up a system OpenBIOS NVRAM partition */
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160 | 3cbee15b | j_mayer | void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len) |
161 | 3cbee15b | j_mayer | { |
162 | 95efd11c | blueswir1 | unsigned int i; |
163 | 95efd11c | blueswir1 | uint32_t start = 0, end;
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164 | 95efd11c | blueswir1 | struct OpenBIOS_nvpart_v1 *part_header;
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165 | 95efd11c | blueswir1 | |
166 | 95efd11c | blueswir1 | // OpenBIOS nvram variables
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167 | 95efd11c | blueswir1 | // Variable partition
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168 | 95efd11c | blueswir1 | part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data;
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169 | 95efd11c | blueswir1 | part_header->signature = OPENBIOS_PART_SYSTEM; |
170 | 95efd11c | blueswir1 | pstrcpy(part_header->name, sizeof(part_header->name), "system"); |
171 | 95efd11c | blueswir1 | |
172 | 95efd11c | blueswir1 | end = start + sizeof(struct OpenBIOS_nvpart_v1); |
173 | 95efd11c | blueswir1 | for (i = 0; i < nb_prom_envs; i++) |
174 | 95efd11c | blueswir1 | end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]); |
175 | 95efd11c | blueswir1 | |
176 | 95efd11c | blueswir1 | // End marker
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177 | 95efd11c | blueswir1 | nvr->data[end++] = '\0';
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178 | 95efd11c | blueswir1 | |
179 | 95efd11c | blueswir1 | end = start + ((end - start + 15) & ~15); |
180 | bd89f43f | aurel32 | /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for
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181 | bd89f43f | aurel32 | new variables. */
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182 | bd89f43f | aurel32 | if (end < DEF_SYSTEM_SIZE)
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183 | bd89f43f | aurel32 | end = DEF_SYSTEM_SIZE; |
184 | 95efd11c | blueswir1 | OpenBIOS_finish_partition(part_header, end - start); |
185 | 95efd11c | blueswir1 | |
186 | 95efd11c | blueswir1 | // free partition
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187 | 95efd11c | blueswir1 | start = end; |
188 | 95efd11c | blueswir1 | part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
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189 | 95efd11c | blueswir1 | part_header->signature = OPENBIOS_PART_FREE; |
190 | 95efd11c | blueswir1 | pstrcpy(part_header->name, sizeof(part_header->name), "free"); |
191 | 95efd11c | blueswir1 | |
192 | 95efd11c | blueswir1 | end = len; |
193 | 95efd11c | blueswir1 | OpenBIOS_finish_partition(part_header, end - start); |
194 | 3cbee15b | j_mayer | } |
195 | 95ed3b7c | Andreas Färber | |
196 | 95ed3b7c | Andreas Färber | type_init(macio_nvram_register_types) |