]>
Commit | Line | Data |
---|---|---|
cbc5b5f3 JJ |
1 | /* |
2 | * QEMU PC System Firmware | |
3 | * | |
4 | * Copyright (c) 2003-2004 Fabrice Bellard | |
5 | * Copyright (c) 2011-2012 Intel Corporation | |
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 | */ | |
25 | ||
b6a0aa05 | 26 | #include "qemu/osdep.h" |
da34e65c | 27 | #include "qapi/error.h" |
fa1d36df | 28 | #include "sysemu/block-backend.h" |
b4a42f81 | 29 | #include "qemu/error-report.h" |
922a01a0 | 30 | #include "qemu/option.h" |
d471bf3e | 31 | #include "qemu/units.h" |
83c9f4ca | 32 | #include "hw/sysbus.h" |
549e984e | 33 | #include "hw/i386/x86.h" |
0d09e41a | 34 | #include "hw/i386/pc.h" |
83c9f4ca | 35 | #include "hw/loader.h" |
a27bd6c7 | 36 | #include "hw/qdev-properties.h" |
0d09e41a | 37 | #include "hw/block/flash.h" |
9c17d615 | 38 | #include "sysemu/kvm.h" |
deae846f | 39 | #include "sev.h" |
cbc5b5f3 | 40 | |
ebc29e1b MA |
41 | #define FLASH_SECTOR_SIZE 4096 |
42 | ||
bd183c79 JJ |
43 | static void pc_isa_bios_init(MemoryRegion *rom_memory, |
44 | MemoryRegion *flash_mem, | |
45 | int ram_size) | |
46 | { | |
47 | int isa_bios_size; | |
48 | MemoryRegion *isa_bios; | |
49 | uint64_t flash_size; | |
50 | void *flash_ptr, *isa_bios_ptr; | |
51 | ||
52 | flash_size = memory_region_size(flash_mem); | |
53 | ||
54 | /* map the last 128KB of the BIOS in ISA space */ | |
d471bf3e | 55 | isa_bios_size = MIN(flash_size, 128 * KiB); |
bd183c79 | 56 | isa_bios = g_malloc(sizeof(*isa_bios)); |
98a99ce0 | 57 | memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size, |
f8ed85ac | 58 | &error_fatal); |
bd183c79 JJ |
59 | memory_region_add_subregion_overlap(rom_memory, |
60 | 0x100000 - isa_bios_size, | |
61 | isa_bios, | |
62 | 1); | |
63 | ||
64 | /* copy ISA rom image from top of flash memory */ | |
65 | flash_ptr = memory_region_get_ram_ptr(flash_mem); | |
66 | isa_bios_ptr = memory_region_get_ram_ptr(isa_bios); | |
67 | memcpy(isa_bios_ptr, | |
68 | ((uint8_t*)flash_ptr) + (flash_size - isa_bios_size), | |
69 | isa_bios_size); | |
70 | ||
71 | memory_region_set_readonly(isa_bios, true); | |
72 | } | |
73 | ||
ebc29e1b MA |
74 | static PFlashCFI01 *pc_pflash_create(PCMachineState *pcms, |
75 | const char *name, | |
76 | const char *alias_prop_name) | |
77 | { | |
df707969 | 78 | DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01); |
637a5acb | 79 | |
ebc29e1b MA |
80 | qdev_prop_set_uint64(dev, "sector-length", FLASH_SECTOR_SIZE); |
81 | qdev_prop_set_uint8(dev, "width", 1); | |
82 | qdev_prop_set_string(dev, "name", name); | |
d2623129 | 83 | object_property_add_child(OBJECT(pcms), name, OBJECT(dev)); |
ebc29e1b | 84 | object_property_add_alias(OBJECT(pcms), alias_prop_name, |
d2623129 | 85 | OBJECT(dev), "drive"); |
0b33521e AB |
86 | /* |
87 | * The returned reference is tied to the child property and | |
88 | * will be removed with object_unparent. | |
89 | */ | |
90 | object_unref(OBJECT(dev)); | |
ebc29e1b MA |
91 | return PFLASH_CFI01(dev); |
92 | } | |
637a5acb | 93 | |
ebc29e1b MA |
94 | void pc_system_flash_create(PCMachineState *pcms) |
95 | { | |
96 | PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); | |
97 | ||
98 | if (pcmc->pci_enabled) { | |
99 | pcms->flash[0] = pc_pflash_create(pcms, "system.flash0", | |
100 | "pflash0"); | |
101 | pcms->flash[1] = pc_pflash_create(pcms, "system.flash1", | |
102 | "pflash1"); | |
103 | } | |
104 | } | |
105 | ||
dd29b5c3 | 106 | void pc_system_flash_cleanup_unused(PCMachineState *pcms) |
ebc29e1b MA |
107 | { |
108 | char *prop_name; | |
109 | int i; | |
110 | Object *dev_obj; | |
111 | ||
112 | assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled); | |
113 | ||
114 | for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) { | |
115 | dev_obj = OBJECT(pcms->flash[i]); | |
116 | if (!object_property_get_bool(dev_obj, "realized", &error_abort)) { | |
117 | prop_name = g_strdup_printf("pflash%d", i); | |
df4fe0b2 | 118 | object_property_del(OBJECT(pcms), prop_name); |
ebc29e1b MA |
119 | g_free(prop_name); |
120 | object_unparent(dev_obj); | |
121 | pcms->flash[i] = NULL; | |
122 | } | |
123 | } | |
124 | } | |
125 | ||
126 | /* | |
127 | * Map the pcms->flash[] from 4GiB downward, and realize. | |
128 | * Map them in descending order, i.e. pcms->flash[0] at the top, | |
129 | * without gaps. | |
130 | * Stop at the first pcms->flash[0] lacking a block backend. | |
131 | * Set each flash's size from its block backend. Fatal error if the | |
132 | * size isn't a non-zero multiple of 4KiB, or the total size exceeds | |
0657c657 | 133 | * pcms->max_fw_size. |
637a5acb | 134 | * |
ebc29e1b MA |
135 | * If pcms->flash[0] has a block backend, its memory is passed to |
136 | * pc_isa_bios_init(). Merging several flash devices for isa-bios is | |
637a5acb LE |
137 | * not supported. |
138 | */ | |
ebc29e1b MA |
139 | static void pc_system_flash_map(PCMachineState *pcms, |
140 | MemoryRegion *rom_memory) | |
bd183c79 | 141 | { |
ebc29e1b MA |
142 | hwaddr total_size = 0; |
143 | int i; | |
4be74634 | 144 | BlockBackend *blk; |
bd183c79 | 145 | int64_t size; |
16434065 | 146 | PFlashCFI01 *system_flash; |
bd183c79 | 147 | MemoryRegion *flash_mem; |
952e0668 | 148 | void *flash_ptr; |
aacdb844 | 149 | int flash_size; |
bd183c79 | 150 | |
ebc29e1b MA |
151 | assert(PC_MACHINE_GET_CLASS(pcms)->pci_enabled); |
152 | ||
153 | for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) { | |
154 | system_flash = pcms->flash[i]; | |
155 | blk = pflash_cfi01_get_blk(system_flash); | |
156 | if (!blk) { | |
157 | break; | |
158 | } | |
4be74634 | 159 | size = blk_getlength(blk); |
637a5acb | 160 | if (size < 0) { |
ebc29e1b MA |
161 | error_report("can't get size of block device %s: %s", |
162 | blk_name(blk), strerror(-size)); | |
163 | exit(1); | |
637a5acb | 164 | } |
4cdd0a77 | 165 | if (size == 0 || !QEMU_IS_ALIGNED(size, FLASH_SECTOR_SIZE)) { |
ebc29e1b MA |
166 | error_report("system firmware block device %s has invalid size " |
167 | "%" PRId64, | |
168 | blk_name(blk), size); | |
169 | info_report("its size must be a non-zero multiple of 0x%x", | |
170 | FLASH_SECTOR_SIZE); | |
171 | exit(1); | |
172 | } | |
173 | if ((hwaddr)size != size | |
174 | || total_size > HWADDR_MAX - size | |
0657c657 | 175 | || total_size + size > pcms->max_fw_size) { |
ebc29e1b MA |
176 | error_report("combined size of system firmware exceeds " |
177 | "%" PRIu64 " bytes", | |
0657c657 | 178 | pcms->max_fw_size); |
637a5acb LE |
179 | exit(1); |
180 | } | |
181 | ||
ebc29e1b MA |
182 | total_size += size; |
183 | qdev_prop_set_uint32(DEVICE(system_flash), "num-blocks", | |
184 | size / FLASH_SECTOR_SIZE); | |
3c6ef471 | 185 | sysbus_realize_and_unref(SYS_BUS_DEVICE(system_flash), &error_fatal); |
ebc29e1b MA |
186 | sysbus_mmio_map(SYS_BUS_DEVICE(system_flash), 0, |
187 | 0x100000000ULL - total_size); | |
188 | ||
189 | if (i == 0) { | |
637a5acb LE |
190 | flash_mem = pflash_cfi01_get_memory(system_flash); |
191 | pc_isa_bios_init(rom_memory, flash_mem, size); | |
952e0668 | 192 | |
9617cddb JB |
193 | /* Encrypt the pflash boot ROM */ |
194 | if (sev_enabled()) { | |
195 | flash_ptr = memory_region_get_ram_ptr(flash_mem); | |
196 | flash_size = memory_region_size(flash_mem); | |
966f1ca5 | 197 | x86_firmware_configure(flash_ptr, flash_size); |
9617cddb | 198 | } |
637a5acb | 199 | } |
bd183c79 | 200 | } |
bd183c79 JJ |
201 | } |
202 | ||
5e640a9e PMD |
203 | void pc_system_firmware_init(PCMachineState *pcms, |
204 | MemoryRegion *rom_memory) | |
cbc5b5f3 | 205 | { |
5e640a9e | 206 | PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); |
ebc29e1b | 207 | int i; |
ebc29e1b | 208 | BlockBackend *pflash_blk[ARRAY_SIZE(pcms->flash)]; |
1d38574f | 209 | |
ebc29e1b | 210 | if (!pcmc->pci_enabled) { |
7d435078 | 211 | x86_bios_rom_init(MACHINE(pcms), "bios.bin", rom_memory, true); |
dafb82e0 | 212 | return; |
bd183c79 JJ |
213 | } |
214 | ||
ebc29e1b MA |
215 | /* Map legacy -drive if=pflash to machine properties */ |
216 | for (i = 0; i < ARRAY_SIZE(pcms->flash); i++) { | |
2d731dbd MA |
217 | pflash_cfi01_legacy_drive(pcms->flash[i], |
218 | drive_get(IF_PFLASH, 0, i)); | |
c8d8ef00 | 219 | pflash_blk[i] = pflash_cfi01_get_blk(pcms->flash[i]); |
ebc29e1b MA |
220 | } |
221 | ||
222 | /* Reject gaps */ | |
223 | for (i = 1; i < ARRAY_SIZE(pcms->flash); i++) { | |
224 | if (pflash_blk[i] && !pflash_blk[i - 1]) { | |
225 | error_report("pflash%d requires pflash%d", i, i - 1); | |
226 | exit(1); | |
227 | } | |
228 | } | |
229 | ||
230 | if (!pflash_blk[0]) { | |
231 | /* Machine property pflash0 not set, use ROM mode */ | |
7d435078 | 232 | x86_bios_rom_init(MACHINE(pcms), "bios.bin", rom_memory, false); |
ebc29e1b MA |
233 | } else { |
234 | if (kvm_enabled() && !kvm_readonly_mem_enabled()) { | |
235 | /* | |
236 | * Older KVM cannot execute from device memory. So, flash | |
237 | * memory cannot be used unless the readonly memory kvm | |
238 | * capability is present. | |
239 | */ | |
240 | error_report("pflash with kvm requires KVM readonly memory support"); | |
241 | exit(1); | |
242 | } | |
243 | ||
244 | pc_system_flash_map(pcms, rom_memory); | |
bd183c79 | 245 | } |
a904410a | 246 | |
ebc29e1b | 247 | pc_system_flash_cleanup_unused(pcms); |
cbc5b5f3 | 248 | } |
966f1ca5 GH |
249 | |
250 | void x86_firmware_configure(void *ptr, int size) | |
251 | { | |
252 | int ret; | |
253 | ||
254 | /* | |
255 | * OVMF places a GUIDed structures in the flash, so | |
256 | * search for them | |
257 | */ | |
258 | pc_system_parse_ovmf_flash(ptr, size); | |
259 | ||
260 | if (sev_enabled()) { | |
261 | ret = sev_es_save_reset_vector(ptr, size); | |
262 | if (ret) { | |
263 | error_report("failed to locate and/or save reset vector"); | |
264 | exit(1); | |
265 | } | |
266 | ||
267 | sev_encrypt_flash(ptr, size, &error_fatal); | |
268 | } | |
269 | } |