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Commit | Line | Data |
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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 | ||
9c17d615 | 26 | #include "sysemu/blockdev.h" |
b4a42f81 | 27 | #include "qemu/error-report.h" |
83c9f4ca PB |
28 | #include "hw/sysbus.h" |
29 | #include "hw/hw.h" | |
0d09e41a | 30 | #include "hw/i386/pc.h" |
bd183c79 | 31 | #include "hw/boards.h" |
83c9f4ca | 32 | #include "hw/loader.h" |
9c17d615 | 33 | #include "sysemu/sysemu.h" |
0d09e41a | 34 | #include "hw/block/flash.h" |
9c17d615 | 35 | #include "sysemu/kvm.h" |
cbc5b5f3 JJ |
36 | |
37 | #define BIOS_FILENAME "bios.bin" | |
38 | ||
90ccf9f6 JJ |
39 | typedef struct PcSysFwDevice { |
40 | SysBusDevice busdev; | |
dade922f | 41 | uint8_t isapc_ram_fw; |
90ccf9f6 JJ |
42 | } PcSysFwDevice; |
43 | ||
bd183c79 JJ |
44 | static void pc_isa_bios_init(MemoryRegion *rom_memory, |
45 | MemoryRegion *flash_mem, | |
46 | int ram_size) | |
47 | { | |
48 | int isa_bios_size; | |
49 | MemoryRegion *isa_bios; | |
50 | uint64_t flash_size; | |
51 | void *flash_ptr, *isa_bios_ptr; | |
52 | ||
53 | flash_size = memory_region_size(flash_mem); | |
54 | ||
55 | /* map the last 128KB of the BIOS in ISA space */ | |
7f87af39 | 56 | isa_bios_size = MIN(flash_size, 128 * 1024); |
bd183c79 | 57 | isa_bios = g_malloc(sizeof(*isa_bios)); |
2c9b15ca | 58 | memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size); |
bd183c79 JJ |
59 | vmstate_register_ram_global(isa_bios); |
60 | memory_region_add_subregion_overlap(rom_memory, | |
61 | 0x100000 - isa_bios_size, | |
62 | isa_bios, | |
63 | 1); | |
64 | ||
65 | /* copy ISA rom image from top of flash memory */ | |
66 | flash_ptr = memory_region_get_ram_ptr(flash_mem); | |
67 | isa_bios_ptr = memory_region_get_ram_ptr(isa_bios); | |
68 | memcpy(isa_bios_ptr, | |
69 | ((uint8_t*)flash_ptr) + (flash_size - isa_bios_size), | |
70 | isa_bios_size); | |
71 | ||
72 | memory_region_set_readonly(isa_bios, true); | |
73 | } | |
74 | ||
bd183c79 JJ |
75 | static void pc_system_flash_init(MemoryRegion *rom_memory, |
76 | DriveInfo *pflash_drv) | |
77 | { | |
78 | BlockDriverState *bdrv; | |
79 | int64_t size; | |
a8170e5e | 80 | hwaddr phys_addr; |
bd183c79 JJ |
81 | int sector_bits, sector_size; |
82 | pflash_t *system_flash; | |
83 | MemoryRegion *flash_mem; | |
84 | ||
85 | bdrv = pflash_drv->bdrv; | |
86 | size = bdrv_getlength(pflash_drv->bdrv); | |
87 | sector_bits = 12; | |
88 | sector_size = 1 << sector_bits; | |
89 | ||
90 | if ((size % sector_size) != 0) { | |
91 | fprintf(stderr, | |
92 | "qemu: PC system firmware (pflash) must be a multiple of 0x%x\n", | |
93 | sector_size); | |
94 | exit(1); | |
95 | } | |
96 | ||
97 | phys_addr = 0x100000000ULL - size; | |
98 | system_flash = pflash_cfi01_register(phys_addr, NULL, "system.flash", size, | |
99 | bdrv, sector_size, size >> sector_bits, | |
100 | 1, 0x0000, 0x0000, 0x0000, 0x0000, 0); | |
101 | flash_mem = pflash_cfi01_get_memory(system_flash); | |
102 | ||
103 | pc_isa_bios_init(rom_memory, flash_mem, size); | |
104 | } | |
105 | ||
dade922f | 106 | static void old_pc_system_rom_init(MemoryRegion *rom_memory, bool isapc_ram_fw) |
cbc5b5f3 JJ |
107 | { |
108 | char *filename; | |
109 | MemoryRegion *bios, *isa_bios; | |
110 | int bios_size, isa_bios_size; | |
111 | int ret; | |
112 | ||
113 | /* BIOS load */ | |
114 | if (bios_name == NULL) { | |
115 | bios_name = BIOS_FILENAME; | |
116 | } | |
117 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
118 | if (filename) { | |
119 | bios_size = get_image_size(filename); | |
120 | } else { | |
121 | bios_size = -1; | |
122 | } | |
123 | if (bios_size <= 0 || | |
124 | (bios_size % 65536) != 0) { | |
125 | goto bios_error; | |
126 | } | |
127 | bios = g_malloc(sizeof(*bios)); | |
2c9b15ca | 128 | memory_region_init_ram(bios, NULL, "pc.bios", bios_size); |
cbc5b5f3 | 129 | vmstate_register_ram_global(bios); |
dade922f JJ |
130 | if (!isapc_ram_fw) { |
131 | memory_region_set_readonly(bios, true); | |
132 | } | |
cbc5b5f3 JJ |
133 | ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); |
134 | if (ret != 0) { | |
135 | bios_error: | |
136 | fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name); | |
137 | exit(1); | |
138 | } | |
139 | if (filename) { | |
140 | g_free(filename); | |
141 | } | |
142 | ||
143 | /* map the last 128KB of the BIOS in ISA space */ | |
144 | isa_bios_size = bios_size; | |
145 | if (isa_bios_size > (128 * 1024)) { | |
146 | isa_bios_size = 128 * 1024; | |
147 | } | |
148 | isa_bios = g_malloc(sizeof(*isa_bios)); | |
2c9b15ca | 149 | memory_region_init_alias(isa_bios, NULL, "isa-bios", bios, |
cbc5b5f3 JJ |
150 | bios_size - isa_bios_size, isa_bios_size); |
151 | memory_region_add_subregion_overlap(rom_memory, | |
152 | 0x100000 - isa_bios_size, | |
153 | isa_bios, | |
154 | 1); | |
dade922f JJ |
155 | if (!isapc_ram_fw) { |
156 | memory_region_set_readonly(isa_bios, true); | |
157 | } | |
cbc5b5f3 JJ |
158 | |
159 | /* map all the bios at the top of memory */ | |
160 | memory_region_add_subregion(rom_memory, | |
161 | (uint32_t)(-bios_size), | |
162 | bios); | |
163 | } | |
164 | ||
6dd2a5c9 | 165 | void pc_system_firmware_init(MemoryRegion *rom_memory, bool isapc_ram_fw) |
cbc5b5f3 | 166 | { |
bd183c79 | 167 | DriveInfo *pflash_drv; |
1d38574f | 168 | |
bd183c79 JJ |
169 | pflash_drv = drive_get(IF_PFLASH, 0, 0); |
170 | ||
6dd2a5c9 | 171 | if (isapc_ram_fw || pflash_drv == NULL) { |
dafb82e0 | 172 | /* When a pflash drive is not found, use rom-mode */ |
6dd2a5c9 | 173 | old_pc_system_rom_init(rom_memory, isapc_ram_fw); |
dafb82e0 | 174 | return; |
bd183c79 JJ |
175 | } |
176 | ||
a904410a PB |
177 | if (kvm_enabled() && !kvm_readonly_mem_enabled()) { |
178 | /* Older KVM cannot execute from device memory. So, flash memory | |
179 | * cannot be used unless the readonly memory kvm capability is present. */ | |
180 | fprintf(stderr, "qemu: pflash with kvm requires KVM readonly memory support\n"); | |
bd183c79 JJ |
181 | exit(1); |
182 | } | |
a904410a PB |
183 | |
184 | pc_system_flash_init(rom_memory, pflash_drv); | |
cbc5b5f3 | 185 | } |