root / hw / pc_sysfw.c @ aebcf56f
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1 | cbc5b5f3 | Jordan Justen | /*
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2 | cbc5b5f3 | Jordan Justen | * QEMU PC System Firmware
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3 | cbc5b5f3 | Jordan Justen | *
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4 | cbc5b5f3 | Jordan Justen | * Copyright (c) 2003-2004 Fabrice Bellard
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5 | cbc5b5f3 | Jordan Justen | * Copyright (c) 2011-2012 Intel Corporation
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6 | cbc5b5f3 | Jordan Justen | *
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7 | cbc5b5f3 | Jordan Justen | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | cbc5b5f3 | Jordan Justen | * of this software and associated documentation files (the "Software"), to deal
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9 | cbc5b5f3 | Jordan Justen | * in the Software without restriction, including without limitation the rights
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10 | cbc5b5f3 | Jordan Justen | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | cbc5b5f3 | Jordan Justen | * copies of the Software, and to permit persons to whom the Software is
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12 | cbc5b5f3 | Jordan Justen | * furnished to do so, subject to the following conditions:
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13 | cbc5b5f3 | Jordan Justen | *
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14 | cbc5b5f3 | Jordan Justen | * The above copyright notice and this permission notice shall be included in
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15 | cbc5b5f3 | Jordan Justen | * all copies or substantial portions of the Software.
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16 | cbc5b5f3 | Jordan Justen | *
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17 | cbc5b5f3 | Jordan Justen | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | cbc5b5f3 | Jordan Justen | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | cbc5b5f3 | Jordan Justen | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | cbc5b5f3 | Jordan Justen | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | cbc5b5f3 | Jordan Justen | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | cbc5b5f3 | Jordan Justen | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | cbc5b5f3 | Jordan Justen | * THE SOFTWARE.
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24 | cbc5b5f3 | Jordan Justen | */
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25 | cbc5b5f3 | Jordan Justen | |
26 | dfc65f1f | Markus Armbruster | #include "blockdev.h" |
27 | 90ccf9f6 | Jordan Justen | #include "sysbus.h" |
28 | 90ccf9f6 | Jordan Justen | #include "hw.h" |
29 | cbc5b5f3 | Jordan Justen | #include "pc.h" |
30 | bd183c79 | Jordan Justen | #include "hw/boards.h" |
31 | cbc5b5f3 | Jordan Justen | #include "loader.h" |
32 | cbc5b5f3 | Jordan Justen | #include "sysemu.h" |
33 | bd183c79 | Jordan Justen | #include "flash.h" |
34 | bd183c79 | Jordan Justen | #include "kvm.h" |
35 | cbc5b5f3 | Jordan Justen | |
36 | cbc5b5f3 | Jordan Justen | #define BIOS_FILENAME "bios.bin" |
37 | cbc5b5f3 | Jordan Justen | |
38 | 90ccf9f6 | Jordan Justen | typedef struct PcSysFwDevice { |
39 | 90ccf9f6 | Jordan Justen | SysBusDevice busdev; |
40 | 90ccf9f6 | Jordan Justen | uint8_t rom_only; |
41 | 90ccf9f6 | Jordan Justen | } PcSysFwDevice; |
42 | 90ccf9f6 | Jordan Justen | |
43 | bd183c79 | Jordan Justen | static void pc_isa_bios_init(MemoryRegion *rom_memory, |
44 | bd183c79 | Jordan Justen | MemoryRegion *flash_mem, |
45 | bd183c79 | Jordan Justen | int ram_size)
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46 | bd183c79 | Jordan Justen | { |
47 | bd183c79 | Jordan Justen | int isa_bios_size;
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48 | bd183c79 | Jordan Justen | MemoryRegion *isa_bios; |
49 | bd183c79 | Jordan Justen | uint64_t flash_size; |
50 | bd183c79 | Jordan Justen | void *flash_ptr, *isa_bios_ptr;
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51 | bd183c79 | Jordan Justen | |
52 | bd183c79 | Jordan Justen | flash_size = memory_region_size(flash_mem); |
53 | bd183c79 | Jordan Justen | |
54 | bd183c79 | Jordan Justen | /* map the last 128KB of the BIOS in ISA space */
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55 | bd183c79 | Jordan Justen | isa_bios_size = flash_size; |
56 | bd183c79 | Jordan Justen | if (isa_bios_size > (128 * 1024)) { |
57 | bd183c79 | Jordan Justen | isa_bios_size = 128 * 1024; |
58 | bd183c79 | Jordan Justen | } |
59 | bd183c79 | Jordan Justen | isa_bios = g_malloc(sizeof(*isa_bios));
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60 | bd183c79 | Jordan Justen | memory_region_init_ram(isa_bios, "isa-bios", isa_bios_size);
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61 | bd183c79 | Jordan Justen | vmstate_register_ram_global(isa_bios); |
62 | bd183c79 | Jordan Justen | memory_region_add_subregion_overlap(rom_memory, |
63 | bd183c79 | Jordan Justen | 0x100000 - isa_bios_size,
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64 | bd183c79 | Jordan Justen | isa_bios, |
65 | bd183c79 | Jordan Justen | 1);
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66 | bd183c79 | Jordan Justen | |
67 | bd183c79 | Jordan Justen | /* copy ISA rom image from top of flash memory */
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68 | bd183c79 | Jordan Justen | flash_ptr = memory_region_get_ram_ptr(flash_mem); |
69 | bd183c79 | Jordan Justen | isa_bios_ptr = memory_region_get_ram_ptr(isa_bios); |
70 | bd183c79 | Jordan Justen | memcpy(isa_bios_ptr, |
71 | bd183c79 | Jordan Justen | ((uint8_t*)flash_ptr) + (flash_size - isa_bios_size), |
72 | bd183c79 | Jordan Justen | isa_bios_size); |
73 | bd183c79 | Jordan Justen | |
74 | bd183c79 | Jordan Justen | memory_region_set_readonly(isa_bios, true);
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75 | bd183c79 | Jordan Justen | } |
76 | bd183c79 | Jordan Justen | |
77 | bd183c79 | Jordan Justen | static void pc_fw_add_pflash_drv(void) |
78 | bd183c79 | Jordan Justen | { |
79 | bd183c79 | Jordan Justen | QemuOpts *opts; |
80 | bd183c79 | Jordan Justen | QEMUMachine *machine; |
81 | bd183c79 | Jordan Justen | char *filename;
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82 | bd183c79 | Jordan Justen | |
83 | bd183c79 | Jordan Justen | if (bios_name == NULL) { |
84 | bd183c79 | Jordan Justen | bios_name = BIOS_FILENAME; |
85 | bd183c79 | Jordan Justen | } |
86 | bd183c79 | Jordan Justen | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
87 | bd183c79 | Jordan Justen | |
88 | bd183c79 | Jordan Justen | opts = drive_add(IF_PFLASH, -1, filename, "readonly=on"); |
89 | 9cf1f002 | Stefan Weil | |
90 | 9cf1f002 | Stefan Weil | g_free(filename); |
91 | 9cf1f002 | Stefan Weil | |
92 | bd183c79 | Jordan Justen | if (opts == NULL) { |
93 | bd183c79 | Jordan Justen | return;
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94 | bd183c79 | Jordan Justen | } |
95 | bd183c79 | Jordan Justen | |
96 | bd183c79 | Jordan Justen | machine = find_default_machine(); |
97 | bd183c79 | Jordan Justen | if (machine == NULL) { |
98 | bd183c79 | Jordan Justen | return;
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99 | bd183c79 | Jordan Justen | } |
100 | bd183c79 | Jordan Justen | |
101 | bd183c79 | Jordan Justen | drive_init(opts, machine->use_scsi); |
102 | bd183c79 | Jordan Justen | } |
103 | bd183c79 | Jordan Justen | |
104 | bd183c79 | Jordan Justen | static void pc_system_flash_init(MemoryRegion *rom_memory, |
105 | bd183c79 | Jordan Justen | DriveInfo *pflash_drv) |
106 | bd183c79 | Jordan Justen | { |
107 | bd183c79 | Jordan Justen | BlockDriverState *bdrv; |
108 | bd183c79 | Jordan Justen | int64_t size; |
109 | bd183c79 | Jordan Justen | target_phys_addr_t phys_addr; |
110 | bd183c79 | Jordan Justen | int sector_bits, sector_size;
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111 | bd183c79 | Jordan Justen | pflash_t *system_flash; |
112 | bd183c79 | Jordan Justen | MemoryRegion *flash_mem; |
113 | bd183c79 | Jordan Justen | |
114 | bd183c79 | Jordan Justen | bdrv = pflash_drv->bdrv; |
115 | bd183c79 | Jordan Justen | size = bdrv_getlength(pflash_drv->bdrv); |
116 | bd183c79 | Jordan Justen | sector_bits = 12;
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117 | bd183c79 | Jordan Justen | sector_size = 1 << sector_bits;
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118 | bd183c79 | Jordan Justen | |
119 | bd183c79 | Jordan Justen | if ((size % sector_size) != 0) { |
120 | bd183c79 | Jordan Justen | fprintf(stderr, |
121 | bd183c79 | Jordan Justen | "qemu: PC system firmware (pflash) must be a multiple of 0x%x\n",
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122 | bd183c79 | Jordan Justen | sector_size); |
123 | bd183c79 | Jordan Justen | exit(1);
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124 | bd183c79 | Jordan Justen | } |
125 | bd183c79 | Jordan Justen | |
126 | bd183c79 | Jordan Justen | phys_addr = 0x100000000ULL - size;
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127 | bd183c79 | Jordan Justen | system_flash = pflash_cfi01_register(phys_addr, NULL, "system.flash", size, |
128 | bd183c79 | Jordan Justen | bdrv, sector_size, size >> sector_bits, |
129 | bd183c79 | Jordan Justen | 1, 0x0000, 0x0000, 0x0000, 0x0000, 0); |
130 | bd183c79 | Jordan Justen | flash_mem = pflash_cfi01_get_memory(system_flash); |
131 | bd183c79 | Jordan Justen | |
132 | bd183c79 | Jordan Justen | pc_isa_bios_init(rom_memory, flash_mem, size); |
133 | bd183c79 | Jordan Justen | } |
134 | bd183c79 | Jordan Justen | |
135 | bd183c79 | Jordan Justen | static void old_pc_system_rom_init(MemoryRegion *rom_memory) |
136 | cbc5b5f3 | Jordan Justen | { |
137 | cbc5b5f3 | Jordan Justen | char *filename;
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138 | cbc5b5f3 | Jordan Justen | MemoryRegion *bios, *isa_bios; |
139 | cbc5b5f3 | Jordan Justen | int bios_size, isa_bios_size;
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140 | cbc5b5f3 | Jordan Justen | int ret;
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141 | cbc5b5f3 | Jordan Justen | |
142 | cbc5b5f3 | Jordan Justen | /* BIOS load */
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143 | cbc5b5f3 | Jordan Justen | if (bios_name == NULL) { |
144 | cbc5b5f3 | Jordan Justen | bios_name = BIOS_FILENAME; |
145 | cbc5b5f3 | Jordan Justen | } |
146 | cbc5b5f3 | Jordan Justen | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
147 | cbc5b5f3 | Jordan Justen | if (filename) {
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148 | cbc5b5f3 | Jordan Justen | bios_size = get_image_size(filename); |
149 | cbc5b5f3 | Jordan Justen | } else {
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150 | cbc5b5f3 | Jordan Justen | bios_size = -1;
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151 | cbc5b5f3 | Jordan Justen | } |
152 | cbc5b5f3 | Jordan Justen | if (bios_size <= 0 || |
153 | cbc5b5f3 | Jordan Justen | (bios_size % 65536) != 0) { |
154 | cbc5b5f3 | Jordan Justen | goto bios_error;
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155 | cbc5b5f3 | Jordan Justen | } |
156 | cbc5b5f3 | Jordan Justen | bios = g_malloc(sizeof(*bios));
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157 | cbc5b5f3 | Jordan Justen | memory_region_init_ram(bios, "pc.bios", bios_size);
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158 | cbc5b5f3 | Jordan Justen | vmstate_register_ram_global(bios); |
159 | cbc5b5f3 | Jordan Justen | memory_region_set_readonly(bios, true);
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160 | cbc5b5f3 | Jordan Justen | ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1);
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161 | cbc5b5f3 | Jordan Justen | if (ret != 0) { |
162 | cbc5b5f3 | Jordan Justen | bios_error:
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163 | cbc5b5f3 | Jordan Justen | fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
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164 | cbc5b5f3 | Jordan Justen | exit(1);
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165 | cbc5b5f3 | Jordan Justen | } |
166 | cbc5b5f3 | Jordan Justen | if (filename) {
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167 | cbc5b5f3 | Jordan Justen | g_free(filename); |
168 | cbc5b5f3 | Jordan Justen | } |
169 | cbc5b5f3 | Jordan Justen | |
170 | cbc5b5f3 | Jordan Justen | /* map the last 128KB of the BIOS in ISA space */
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171 | cbc5b5f3 | Jordan Justen | isa_bios_size = bios_size; |
172 | cbc5b5f3 | Jordan Justen | if (isa_bios_size > (128 * 1024)) { |
173 | cbc5b5f3 | Jordan Justen | isa_bios_size = 128 * 1024; |
174 | cbc5b5f3 | Jordan Justen | } |
175 | cbc5b5f3 | Jordan Justen | isa_bios = g_malloc(sizeof(*isa_bios));
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176 | cbc5b5f3 | Jordan Justen | memory_region_init_alias(isa_bios, "isa-bios", bios,
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177 | cbc5b5f3 | Jordan Justen | bios_size - isa_bios_size, isa_bios_size); |
178 | cbc5b5f3 | Jordan Justen | memory_region_add_subregion_overlap(rom_memory, |
179 | cbc5b5f3 | Jordan Justen | 0x100000 - isa_bios_size,
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180 | cbc5b5f3 | Jordan Justen | isa_bios, |
181 | cbc5b5f3 | Jordan Justen | 1);
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182 | cbc5b5f3 | Jordan Justen | memory_region_set_readonly(isa_bios, true);
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183 | cbc5b5f3 | Jordan Justen | |
184 | cbc5b5f3 | Jordan Justen | /* map all the bios at the top of memory */
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185 | cbc5b5f3 | Jordan Justen | memory_region_add_subregion(rom_memory, |
186 | cbc5b5f3 | Jordan Justen | (uint32_t)(-bios_size), |
187 | cbc5b5f3 | Jordan Justen | bios); |
188 | cbc5b5f3 | Jordan Justen | } |
189 | cbc5b5f3 | Jordan Justen | |
190 | cbc5b5f3 | Jordan Justen | void pc_system_firmware_init(MemoryRegion *rom_memory)
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191 | cbc5b5f3 | Jordan Justen | { |
192 | bd183c79 | Jordan Justen | DriveInfo *pflash_drv; |
193 | 90ccf9f6 | Jordan Justen | PcSysFwDevice *sysfw_dev; |
194 | 90ccf9f6 | Jordan Justen | |
195 | 90ccf9f6 | Jordan Justen | sysfw_dev = (PcSysFwDevice*) qdev_create(NULL, "pc-sysfw"); |
196 | 90ccf9f6 | Jordan Justen | |
197 | 1d38574f | Anthony Liguori | qdev_init_nofail(DEVICE(sysfw_dev)); |
198 | 1d38574f | Anthony Liguori | |
199 | bd183c79 | Jordan Justen | if (sysfw_dev->rom_only) {
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200 | bd183c79 | Jordan Justen | old_pc_system_rom_init(rom_memory); |
201 | bd183c79 | Jordan Justen | return;
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202 | bd183c79 | Jordan Justen | } |
203 | bd183c79 | Jordan Justen | |
204 | bd183c79 | Jordan Justen | pflash_drv = drive_get(IF_PFLASH, 0, 0); |
205 | bd183c79 | Jordan Justen | |
206 | bd183c79 | Jordan Justen | /* Currently KVM cannot execute from device memory.
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207 | bd183c79 | Jordan Justen | Use old rom based firmware initialization for KVM. */
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208 | bd183c79 | Jordan Justen | if (kvm_enabled()) {
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209 | bd183c79 | Jordan Justen | if (pflash_drv != NULL) { |
210 | bd183c79 | Jordan Justen | fprintf(stderr, "qemu: pflash cannot be used with kvm enabled\n");
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211 | bd183c79 | Jordan Justen | exit(1);
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212 | bd183c79 | Jordan Justen | } else {
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213 | bd183c79 | Jordan Justen | sysfw_dev->rom_only = 1;
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214 | bd183c79 | Jordan Justen | old_pc_system_rom_init(rom_memory); |
215 | bd183c79 | Jordan Justen | return;
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216 | bd183c79 | Jordan Justen | } |
217 | bd183c79 | Jordan Justen | } |
218 | bd183c79 | Jordan Justen | |
219 | bd183c79 | Jordan Justen | /* If a pflash drive is not found, then create one using
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220 | bd183c79 | Jordan Justen | the bios filename. */
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221 | bd183c79 | Jordan Justen | if (pflash_drv == NULL) { |
222 | bd183c79 | Jordan Justen | pc_fw_add_pflash_drv(); |
223 | bd183c79 | Jordan Justen | pflash_drv = drive_get(IF_PFLASH, 0, 0); |
224 | bd183c79 | Jordan Justen | } |
225 | bd183c79 | Jordan Justen | |
226 | bd183c79 | Jordan Justen | if (pflash_drv != NULL) { |
227 | bd183c79 | Jordan Justen | pc_system_flash_init(rom_memory, pflash_drv); |
228 | bd183c79 | Jordan Justen | } else {
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229 | bd183c79 | Jordan Justen | fprintf(stderr, "qemu: PC system firmware (pflash) not available\n");
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230 | bd183c79 | Jordan Justen | exit(1);
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231 | bd183c79 | Jordan Justen | } |
232 | cbc5b5f3 | Jordan Justen | } |
233 | cbc5b5f3 | Jordan Justen | |
234 | 90ccf9f6 | Jordan Justen | static Property pcsysfw_properties[] = {
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235 | 1b89fafe | Jordan Justen | DEFINE_PROP_UINT8("rom_only", PcSysFwDevice, rom_only, 0), |
236 | 90ccf9f6 | Jordan Justen | DEFINE_PROP_END_OF_LIST(), |
237 | 90ccf9f6 | Jordan Justen | }; |
238 | 90ccf9f6 | Jordan Justen | |
239 | 1d38574f | Anthony Liguori | static int pcsysfw_init(DeviceState *dev) |
240 | 1d38574f | Anthony Liguori | { |
241 | 1d38574f | Anthony Liguori | return 0; |
242 | 1d38574f | Anthony Liguori | } |
243 | 1d38574f | Anthony Liguori | |
244 | 90ccf9f6 | Jordan Justen | static void pcsysfw_class_init (ObjectClass *klass, void *data) |
245 | 90ccf9f6 | Jordan Justen | { |
246 | 90ccf9f6 | Jordan Justen | DeviceClass *dc = DEVICE_CLASS (klass); |
247 | 90ccf9f6 | Jordan Justen | |
248 | 90ccf9f6 | Jordan Justen | dc->desc = "PC System Firmware";
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249 | 1d38574f | Anthony Liguori | dc->init = pcsysfw_init; |
250 | 90ccf9f6 | Jordan Justen | dc->props = pcsysfw_properties; |
251 | 90ccf9f6 | Jordan Justen | } |
252 | 90ccf9f6 | Jordan Justen | |
253 | 90ccf9f6 | Jordan Justen | static TypeInfo pcsysfw_info = {
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254 | 90ccf9f6 | Jordan Justen | .name = "pc-sysfw",
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255 | 90ccf9f6 | Jordan Justen | .parent = TYPE_SYS_BUS_DEVICE, |
256 | 90ccf9f6 | Jordan Justen | .instance_size = sizeof (PcSysFwDevice),
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257 | 90ccf9f6 | Jordan Justen | .class_init = pcsysfw_class_init, |
258 | 90ccf9f6 | Jordan Justen | }; |
259 | 90ccf9f6 | Jordan Justen | |
260 | 90ccf9f6 | Jordan Justen | static void pcsysfw_register (void) |
261 | 90ccf9f6 | Jordan Justen | { |
262 | 90ccf9f6 | Jordan Justen | type_register_static (&pcsysfw_info); |
263 | 90ccf9f6 | Jordan Justen | } |
264 | 90ccf9f6 | Jordan Justen | |
265 | 90ccf9f6 | Jordan Justen | type_init (pcsysfw_register); |