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Commit | Line | Data |
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3cbee15b JM |
1 | /* |
2 | * PowerMac NVRAM emulation | |
3 | * | |
4 | * Copyright (c) 2005-2007 Fabrice Bellard | |
5 | * Copyright (c) 2007 Jocelyn Mayer | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
87ecb68b | 25 | #include "hw.h" |
95efd11c | 26 | #include "firmware_abi.h" |
9c17d615 | 27 | #include "sysemu/sysemu.h" |
baec1910 | 28 | #include "ppc/mac.h" |
3cbee15b | 29 | |
ea026b2f BS |
30 | /* debug NVR */ |
31 | //#define DEBUG_NVR | |
32 | ||
33 | #ifdef DEBUG_NVR | |
001faf32 BS |
34 | #define NVR_DPRINTF(fmt, ...) \ |
35 | do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0) | |
ea026b2f | 36 | #else |
001faf32 | 37 | #define NVR_DPRINTF(fmt, ...) |
ea026b2f BS |
38 | #endif |
39 | ||
bd89f43f AJ |
40 | #define DEF_SYSTEM_SIZE 0xc10 |
41 | ||
3cbee15b | 42 | /* Direct access to NVRAM */ |
3743cca7 | 43 | uint8_t macio_nvram_read(MacIONVRAMState *s, uint32_t addr) |
3cbee15b | 44 | { |
3cbee15b JM |
45 | uint32_t ret; |
46 | ||
3743cca7 | 47 | if (addr < s->size) { |
3cbee15b | 48 | ret = s->data[addr]; |
3743cca7 | 49 | } else { |
3cbee15b | 50 | ret = -1; |
3743cca7 AF |
51 | } |
52 | NVR_DPRINTF("read addr %04" PRIx32 " val %" PRIx8 "\n", addr, ret); | |
3cbee15b JM |
53 | |
54 | return ret; | |
55 | } | |
56 | ||
3743cca7 | 57 | void macio_nvram_write(MacIONVRAMState *s, uint32_t addr, uint8_t val) |
3cbee15b | 58 | { |
3743cca7 AF |
59 | NVR_DPRINTF("write addr %04" PRIx32 " val %" PRIx8 "\n", addr, val); |
60 | if (addr < s->size) { | |
3cbee15b | 61 | s->data[addr] = val; |
3743cca7 | 62 | } |
3cbee15b JM |
63 | } |
64 | ||
65 | /* macio style NVRAM device */ | |
a8170e5e | 66 | static void macio_nvram_writeb(void *opaque, hwaddr addr, |
23c5e4ca | 67 | uint64_t value, unsigned size) |
3cbee15b JM |
68 | { |
69 | MacIONVRAMState *s = opaque; | |
74e91155 | 70 | |
68af3f24 | 71 | addr = (addr >> s->it_shift) & (s->size - 1); |
3cbee15b | 72 | s->data[addr] = value; |
3743cca7 | 73 | NVR_DPRINTF("writeb addr %04" PHYS_PRIx " val %" PRIx64 "\n", addr, value); |
3cbee15b JM |
74 | } |
75 | ||
a8170e5e | 76 | static uint64_t macio_nvram_readb(void *opaque, hwaddr addr, |
23c5e4ca | 77 | unsigned size) |
3cbee15b JM |
78 | { |
79 | MacIONVRAMState *s = opaque; | |
80 | uint32_t value; | |
81 | ||
68af3f24 | 82 | addr = (addr >> s->it_shift) & (s->size - 1); |
3cbee15b | 83 | value = s->data[addr]; |
ea026b2f | 84 | NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value); |
3cbee15b JM |
85 | |
86 | return value; | |
87 | } | |
88 | ||
23c5e4ca AK |
89 | static const MemoryRegionOps macio_nvram_ops = { |
90 | .read = macio_nvram_readb, | |
91 | .write = macio_nvram_writeb, | |
d8c6d07f | 92 | .endianness = DEVICE_BIG_ENDIAN, |
3cbee15b JM |
93 | }; |
94 | ||
8e470f8a JQ |
95 | static const VMStateDescription vmstate_macio_nvram = { |
96 | .name = "macio_nvram", | |
97 | .version_id = 1, | |
98 | .minimum_version_id = 1, | |
99 | .minimum_version_id_old = 1, | |
100 | .fields = (VMStateField[]) { | |
101 | VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size), | |
102 | VMSTATE_END_OF_LIST() | |
103 | } | |
104 | }; | |
9b64997f | 105 | |
9b64997f | 106 | |
95ed3b7c | 107 | static void macio_nvram_reset(DeviceState *dev) |
6e6b7363 BS |
108 | { |
109 | } | |
110 | ||
95ed3b7c | 111 | static void macio_nvram_realizefn(DeviceState *dev, Error **errp) |
3cbee15b | 112 | { |
95ed3b7c AF |
113 | SysBusDevice *d = SYS_BUS_DEVICE(dev); |
114 | MacIONVRAMState *s = MACIO_NVRAM(dev); | |
74e91155 | 115 | |
95ed3b7c | 116 | s->data = g_malloc0(s->size); |
3f7cbbbd | 117 | |
23c5e4ca | 118 | memory_region_init_io(&s->mem, &macio_nvram_ops, s, "macio-nvram", |
95ed3b7c AF |
119 | s->size << s->it_shift); |
120 | sysbus_init_mmio(d, &s->mem); | |
121 | } | |
122 | ||
123 | static void macio_nvram_unrealizefn(DeviceState *dev, Error **errp) | |
124 | { | |
125 | MacIONVRAMState *s = MACIO_NVRAM(dev); | |
126 | ||
127 | g_free(s->data); | |
128 | } | |
3cbee15b | 129 | |
95ed3b7c AF |
130 | static Property macio_nvram_properties[] = { |
131 | DEFINE_PROP_UINT32("size", MacIONVRAMState, size, 0), | |
132 | DEFINE_PROP_UINT32("it_shift", MacIONVRAMState, it_shift, 0), | |
133 | DEFINE_PROP_END_OF_LIST() | |
134 | }; | |
135 | ||
136 | static void macio_nvram_class_init(ObjectClass *oc, void *data) | |
137 | { | |
138 | DeviceClass *dc = DEVICE_CLASS(oc); | |
139 | ||
140 | dc->realize = macio_nvram_realizefn; | |
141 | dc->unrealize = macio_nvram_unrealizefn; | |
142 | dc->reset = macio_nvram_reset; | |
143 | dc->vmsd = &vmstate_macio_nvram; | |
144 | dc->props = macio_nvram_properties; | |
3cbee15b JM |
145 | } |
146 | ||
95ed3b7c AF |
147 | static const TypeInfo macio_nvram_type_info = { |
148 | .name = TYPE_MACIO_NVRAM, | |
149 | .parent = TYPE_SYS_BUS_DEVICE, | |
150 | .instance_size = sizeof(MacIONVRAMState), | |
151 | .class_init = macio_nvram_class_init, | |
152 | }; | |
153 | ||
154 | static void macio_nvram_register_types(void) | |
74e91155 | 155 | { |
95ed3b7c | 156 | type_register_static(&macio_nvram_type_info); |
74e91155 JM |
157 | } |
158 | ||
95efd11c | 159 | /* Set up a system OpenBIOS NVRAM partition */ |
3cbee15b JM |
160 | void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len) |
161 | { | |
95efd11c BS |
162 | unsigned int i; |
163 | uint32_t start = 0, end; | |
164 | struct OpenBIOS_nvpart_v1 *part_header; | |
165 | ||
166 | // OpenBIOS nvram variables | |
167 | // Variable partition | |
168 | part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data; | |
169 | part_header->signature = OPENBIOS_PART_SYSTEM; | |
170 | pstrcpy(part_header->name, sizeof(part_header->name), "system"); | |
171 | ||
172 | end = start + sizeof(struct OpenBIOS_nvpart_v1); | |
173 | for (i = 0; i < nb_prom_envs; i++) | |
174 | end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]); | |
175 | ||
176 | // End marker | |
177 | nvr->data[end++] = '\0'; | |
178 | ||
179 | end = start + ((end - start + 15) & ~15); | |
bd89f43f AJ |
180 | /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for |
181 | new variables. */ | |
182 | if (end < DEF_SYSTEM_SIZE) | |
183 | end = DEF_SYSTEM_SIZE; | |
95efd11c BS |
184 | OpenBIOS_finish_partition(part_header, end - start); |
185 | ||
186 | // free partition | |
187 | start = end; | |
188 | part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start]; | |
189 | part_header->signature = OPENBIOS_PART_FREE; | |
190 | pstrcpy(part_header->name, sizeof(part_header->name), "free"); | |
191 | ||
192 | end = len; | |
193 | OpenBIOS_finish_partition(part_header, end - start); | |
3cbee15b | 194 | } |
95ed3b7c AF |
195 | |
196 | type_init(macio_nvram_register_types) |