]>
Commit | Line | Data |
---|---|---|
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 BS |
26 | #include "firmware_abi.h" |
27 | #include "sysemu.h" | |
3cbee15b JM |
28 | #include "ppc_mac.h" |
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 | ||
3cbee15b | 40 | struct MacIONVRAMState { |
8a11f43b | 41 | uint32_t size; |
74e91155 | 42 | int mem_index; |
68af3f24 | 43 | unsigned int it_shift; |
3f7cbbbd | 44 | uint8_t *data; |
3cbee15b JM |
45 | }; |
46 | ||
bd89f43f AJ |
47 | #define DEF_SYSTEM_SIZE 0xc10 |
48 | ||
3cbee15b JM |
49 | /* Direct access to NVRAM */ |
50 | uint32_t macio_nvram_read (void *opaque, uint32_t addr) | |
51 | { | |
52 | MacIONVRAMState *s = opaque; | |
53 | uint32_t ret; | |
54 | ||
3f7cbbbd | 55 | if (addr < s->size) |
3cbee15b JM |
56 | ret = s->data[addr]; |
57 | else | |
58 | ret = -1; | |
ea026b2f | 59 | NVR_DPRINTF("read addr %04x val %x\n", addr, ret); |
3cbee15b JM |
60 | |
61 | return ret; | |
62 | } | |
63 | ||
64 | void macio_nvram_write (void *opaque, uint32_t addr, uint32_t val) | |
65 | { | |
66 | MacIONVRAMState *s = opaque; | |
67 | ||
ea026b2f | 68 | NVR_DPRINTF("write addr %04x val %x\n", addr, val); |
3f7cbbbd | 69 | if (addr < s->size) |
3cbee15b JM |
70 | s->data[addr] = val; |
71 | } | |
72 | ||
73 | /* macio style NVRAM device */ | |
74 | static void macio_nvram_writeb (void *opaque, | |
c227f099 | 75 | target_phys_addr_t addr, uint32_t value) |
3cbee15b JM |
76 | { |
77 | MacIONVRAMState *s = opaque; | |
74e91155 | 78 | |
68af3f24 | 79 | addr = (addr >> s->it_shift) & (s->size - 1); |
3cbee15b | 80 | s->data[addr] = value; |
ea026b2f | 81 | NVR_DPRINTF("writeb addr %04x val %x\n", (int)addr, value); |
3cbee15b JM |
82 | } |
83 | ||
c227f099 | 84 | static uint32_t macio_nvram_readb (void *opaque, target_phys_addr_t addr) |
3cbee15b JM |
85 | { |
86 | MacIONVRAMState *s = opaque; | |
87 | uint32_t value; | |
88 | ||
68af3f24 | 89 | addr = (addr >> s->it_shift) & (s->size - 1); |
3cbee15b | 90 | value = s->data[addr]; |
ea026b2f | 91 | NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value); |
3cbee15b JM |
92 | |
93 | return value; | |
94 | } | |
95 | ||
d60efc6b | 96 | static CPUWriteMemoryFunc * const nvram_write[] = { |
3cbee15b JM |
97 | &macio_nvram_writeb, |
98 | &macio_nvram_writeb, | |
99 | &macio_nvram_writeb, | |
100 | }; | |
101 | ||
d60efc6b | 102 | static CPUReadMemoryFunc * const nvram_read[] = { |
3cbee15b JM |
103 | &macio_nvram_readb, |
104 | &macio_nvram_readb, | |
105 | &macio_nvram_readb, | |
106 | }; | |
107 | ||
8e470f8a JQ |
108 | static const VMStateDescription vmstate_macio_nvram = { |
109 | .name = "macio_nvram", | |
110 | .version_id = 1, | |
111 | .minimum_version_id = 1, | |
112 | .minimum_version_id_old = 1, | |
113 | .fields = (VMStateField[]) { | |
114 | VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size), | |
115 | VMSTATE_END_OF_LIST() | |
116 | } | |
117 | }; | |
9b64997f | 118 | |
9b64997f | 119 | |
6e6b7363 BS |
120 | static void macio_nvram_reset(void *opaque) |
121 | { | |
122 | } | |
123 | ||
c227f099 | 124 | MacIONVRAMState *macio_nvram_init (int *mem_index, target_phys_addr_t size, |
68af3f24 | 125 | unsigned int it_shift) |
3cbee15b JM |
126 | { |
127 | MacIONVRAMState *s; | |
74e91155 | 128 | |
3cbee15b | 129 | s = qemu_mallocz(sizeof(MacIONVRAMState)); |
3f7cbbbd | 130 | s->data = qemu_mallocz(size); |
74e91155 | 131 | s->size = size; |
68af3f24 | 132 | s->it_shift = it_shift; |
3f7cbbbd | 133 | |
2507c12a AG |
134 | s->mem_index = cpu_register_io_memory(nvram_read, nvram_write, s, |
135 | DEVICE_NATIVE_ENDIAN); | |
74e91155 | 136 | *mem_index = s->mem_index; |
8e470f8a | 137 | vmstate_register(NULL, -1, &vmstate_macio_nvram, s); |
a08d4367 | 138 | qemu_register_reset(macio_nvram_reset, s); |
3cbee15b JM |
139 | |
140 | return s; | |
141 | } | |
142 | ||
c227f099 | 143 | void macio_nvram_map (void *opaque, target_phys_addr_t mem_base) |
74e91155 JM |
144 | { |
145 | MacIONVRAMState *s; | |
146 | ||
147 | s = opaque; | |
68af3f24 BS |
148 | cpu_register_physical_memory(mem_base, s->size << s->it_shift, |
149 | s->mem_index); | |
74e91155 JM |
150 | } |
151 | ||
95efd11c | 152 | /* Set up a system OpenBIOS NVRAM partition */ |
3cbee15b JM |
153 | void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len) |
154 | { | |
95efd11c BS |
155 | unsigned int i; |
156 | uint32_t start = 0, end; | |
157 | struct OpenBIOS_nvpart_v1 *part_header; | |
158 | ||
159 | // OpenBIOS nvram variables | |
160 | // Variable partition | |
161 | part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data; | |
162 | part_header->signature = OPENBIOS_PART_SYSTEM; | |
163 | pstrcpy(part_header->name, sizeof(part_header->name), "system"); | |
164 | ||
165 | end = start + sizeof(struct OpenBIOS_nvpart_v1); | |
166 | for (i = 0; i < nb_prom_envs; i++) | |
167 | end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]); | |
168 | ||
169 | // End marker | |
170 | nvr->data[end++] = '\0'; | |
171 | ||
172 | end = start + ((end - start + 15) & ~15); | |
bd89f43f AJ |
173 | /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for |
174 | new variables. */ | |
175 | if (end < DEF_SYSTEM_SIZE) | |
176 | end = DEF_SYSTEM_SIZE; | |
95efd11c BS |
177 | OpenBIOS_finish_partition(part_header, end - start); |
178 | ||
179 | // free partition | |
180 | start = end; | |
181 | part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start]; | |
182 | part_header->signature = OPENBIOS_PART_FREE; | |
183 | pstrcpy(part_header->name, sizeof(part_header->name), "free"); | |
184 | ||
185 | end = len; | |
186 | OpenBIOS_finish_partition(part_header, end - start); | |
3cbee15b | 187 | } |