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80cabfad FB |
1 | /* |
2 | * QEMU PC System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2004 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
80cabfad FB |
24 | #include "vl.h" |
25 | ||
b41a2cd1 FB |
26 | /* output Bochs bios info messages */ |
27 | //#define DEBUG_BIOS | |
28 | ||
80cabfad FB |
29 | #define BIOS_FILENAME "bios.bin" |
30 | #define VGABIOS_FILENAME "vgabios.bin" | |
31 | #define LINUX_BOOT_FILENAME "linux_boot.bin" | |
32 | ||
33 | #define KERNEL_LOAD_ADDR 0x00100000 | |
34 | #define INITRD_LOAD_ADDR 0x00400000 | |
35 | #define KERNEL_PARAMS_ADDR 0x00090000 | |
36 | #define KERNEL_CMDLINE_ADDR 0x00099000 | |
37 | ||
38 | int speaker_data_on; | |
39 | int dummy_refresh_clock; | |
baca51fa | 40 | static fdctrl_t *floppy_controller; |
b0a21b53 | 41 | static RTCState *rtc_state; |
80cabfad | 42 | |
b41a2cd1 | 43 | static void ioport80_write(void *opaque, uint32_t addr, uint32_t data) |
80cabfad FB |
44 | { |
45 | } | |
46 | ||
b0a21b53 FB |
47 | /* PC cmos mappings */ |
48 | ||
80cabfad | 49 | #define REG_EQUIPMENT_BYTE 0x14 |
b0a21b53 FB |
50 | #define REG_IBM_CENTURY_BYTE 0x32 |
51 | #define REG_IBM_PS2_CENTURY_BYTE 0x37 | |
52 | ||
53 | ||
54 | static inline int to_bcd(RTCState *s, int a) | |
55 | { | |
56 | return ((a / 10) << 4) | (a % 10); | |
57 | } | |
80cabfad FB |
58 | |
59 | static void cmos_init(int ram_size, int boot_device) | |
60 | { | |
b0a21b53 | 61 | RTCState *s = rtc_state; |
80cabfad | 62 | int val; |
b41a2cd1 | 63 | int fd0, fd1, nb; |
b0a21b53 FB |
64 | time_t ti; |
65 | struct tm *tm; | |
66 | ||
67 | /* set the CMOS date */ | |
68 | time(&ti); | |
69 | tm = gmtime(&ti); | |
70 | rtc_set_date(s, tm); | |
71 | ||
72 | val = to_bcd(s, (tm->tm_year / 100) + 19); | |
73 | rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val); | |
74 | rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val); | |
80cabfad | 75 | |
b0a21b53 | 76 | /* various important CMOS locations needed by PC/Bochs bios */ |
80cabfad FB |
77 | |
78 | /* memory size */ | |
79 | val = (ram_size / 1024) - 1024; | |
80 | if (val > 65535) | |
81 | val = 65535; | |
b0a21b53 FB |
82 | rtc_set_memory(s, 0x17, val); |
83 | rtc_set_memory(s, 0x18, val >> 8); | |
84 | rtc_set_memory(s, 0x30, val); | |
85 | rtc_set_memory(s, 0x31, val >> 8); | |
80cabfad FB |
86 | |
87 | val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); | |
88 | if (val > 65535) | |
89 | val = 65535; | |
b0a21b53 FB |
90 | rtc_set_memory(s, 0x34, val); |
91 | rtc_set_memory(s, 0x35, val >> 8); | |
80cabfad FB |
92 | |
93 | switch(boot_device) { | |
94 | case 'a': | |
95 | case 'b': | |
b0a21b53 | 96 | rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */ |
80cabfad FB |
97 | break; |
98 | default: | |
99 | case 'c': | |
b0a21b53 | 100 | rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */ |
80cabfad FB |
101 | break; |
102 | case 'd': | |
b0a21b53 | 103 | rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */ |
80cabfad FB |
104 | break; |
105 | } | |
80cabfad | 106 | |
b41a2cd1 FB |
107 | /* floppy type */ |
108 | ||
baca51fa FB |
109 | fd0 = fdctrl_get_drive_type(floppy_controller, 0); |
110 | fd1 = fdctrl_get_drive_type(floppy_controller, 1); | |
80cabfad | 111 | |
b0a21b53 | 112 | val = 0; |
80cabfad FB |
113 | switch (fd0) { |
114 | case 0: | |
115 | /* 1.44 Mb 3"5 drive */ | |
b0a21b53 | 116 | val |= 0x40; |
80cabfad FB |
117 | break; |
118 | case 1: | |
119 | /* 2.88 Mb 3"5 drive */ | |
b0a21b53 | 120 | val |= 0x60; |
80cabfad FB |
121 | break; |
122 | case 2: | |
123 | /* 1.2 Mb 5"5 drive */ | |
b0a21b53 | 124 | val |= 0x20; |
80cabfad FB |
125 | break; |
126 | } | |
127 | switch (fd1) { | |
128 | case 0: | |
129 | /* 1.44 Mb 3"5 drive */ | |
b0a21b53 | 130 | val |= 0x04; |
80cabfad FB |
131 | break; |
132 | case 1: | |
133 | /* 2.88 Mb 3"5 drive */ | |
b0a21b53 | 134 | val |= 0x06; |
80cabfad FB |
135 | break; |
136 | case 2: | |
137 | /* 1.2 Mb 5"5 drive */ | |
b0a21b53 | 138 | val |= 0x02; |
80cabfad FB |
139 | break; |
140 | } | |
b0a21b53 FB |
141 | rtc_set_memory(s, 0x10, val); |
142 | ||
143 | val = 0; | |
b41a2cd1 | 144 | nb = 0; |
80cabfad FB |
145 | if (fd0 < 3) |
146 | nb++; | |
147 | if (fd1 < 3) | |
148 | nb++; | |
149 | switch (nb) { | |
150 | case 0: | |
151 | break; | |
152 | case 1: | |
b0a21b53 | 153 | val |= 0x01; /* 1 drive, ready for boot */ |
80cabfad FB |
154 | break; |
155 | case 2: | |
b0a21b53 | 156 | val |= 0x41; /* 2 drives, ready for boot */ |
80cabfad FB |
157 | break; |
158 | } | |
b0a21b53 FB |
159 | val |= 0x02; /* FPU is there */ |
160 | val |= 0x04; /* PS/2 mouse installed */ | |
161 | rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); | |
162 | ||
80cabfad FB |
163 | } |
164 | ||
b41a2cd1 | 165 | static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
80cabfad FB |
166 | { |
167 | speaker_data_on = (val >> 1) & 1; | |
168 | pit_set_gate(&pit_channels[2], val & 1); | |
169 | } | |
170 | ||
b41a2cd1 | 171 | static uint32_t speaker_ioport_read(void *opaque, uint32_t addr) |
80cabfad FB |
172 | { |
173 | int out; | |
b0a21b53 | 174 | out = pit_get_out(&pit_channels[2], qemu_get_clock(vm_clock)); |
80cabfad FB |
175 | dummy_refresh_clock ^= 1; |
176 | return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) | | |
177 | (dummy_refresh_clock << 4); | |
178 | } | |
179 | ||
80cabfad FB |
180 | /***********************************************************/ |
181 | /* Bochs BIOS debug ports */ | |
182 | ||
b41a2cd1 | 183 | void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) |
80cabfad FB |
184 | { |
185 | switch(addr) { | |
186 | /* Bochs BIOS messages */ | |
187 | case 0x400: | |
188 | case 0x401: | |
189 | fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val); | |
190 | exit(1); | |
191 | case 0x402: | |
192 | case 0x403: | |
193 | #ifdef DEBUG_BIOS | |
194 | fprintf(stderr, "%c", val); | |
195 | #endif | |
196 | break; | |
197 | ||
198 | /* LGPL'ed VGA BIOS messages */ | |
199 | case 0x501: | |
200 | case 0x502: | |
201 | fprintf(stderr, "VGA BIOS panic, line %d\n", val); | |
202 | exit(1); | |
203 | case 0x500: | |
204 | case 0x503: | |
205 | #ifdef DEBUG_BIOS | |
206 | fprintf(stderr, "%c", val); | |
207 | #endif | |
208 | break; | |
209 | } | |
210 | } | |
211 | ||
212 | void bochs_bios_init(void) | |
213 | { | |
b41a2cd1 FB |
214 | register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
215 | register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); | |
216 | register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); | |
217 | register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); | |
218 | ||
219 | register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); | |
220 | register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); | |
221 | register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); | |
222 | register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); | |
80cabfad FB |
223 | } |
224 | ||
225 | ||
226 | int load_kernel(const char *filename, uint8_t *addr, | |
227 | uint8_t *real_addr) | |
228 | { | |
229 | int fd, size; | |
230 | int setup_sects; | |
231 | ||
232 | fd = open(filename, O_RDONLY); | |
233 | if (fd < 0) | |
234 | return -1; | |
235 | ||
236 | /* load 16 bit code */ | |
237 | if (read(fd, real_addr, 512) != 512) | |
238 | goto fail; | |
239 | setup_sects = real_addr[0x1F1]; | |
240 | if (!setup_sects) | |
241 | setup_sects = 4; | |
242 | if (read(fd, real_addr + 512, setup_sects * 512) != | |
243 | setup_sects * 512) | |
244 | goto fail; | |
245 | ||
246 | /* load 32 bit code */ | |
247 | size = read(fd, addr, 16 * 1024 * 1024); | |
248 | if (size < 0) | |
249 | goto fail; | |
250 | close(fd); | |
251 | return size; | |
252 | fail: | |
253 | close(fd); | |
254 | return -1; | |
255 | } | |
256 | ||
b41a2cd1 FB |
257 | static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
258 | static const int ide_iobase2[2] = { 0x3f6, 0x376 }; | |
259 | static const int ide_irq[2] = { 14, 15 }; | |
260 | ||
261 | #define NE2000_NB_MAX 6 | |
262 | ||
263 | static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; | |
264 | static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; | |
265 | ||
80cabfad FB |
266 | /* PC hardware initialisation */ |
267 | void pc_init(int ram_size, int vga_ram_size, int boot_device, | |
268 | DisplayState *ds, const char **fd_filename, int snapshot, | |
269 | const char *kernel_filename, const char *kernel_cmdline, | |
270 | const char *initrd_filename) | |
271 | { | |
272 | char buf[1024]; | |
b41a2cd1 | 273 | int ret, linux_boot, initrd_size, i, nb_nics1, fd; |
80cabfad FB |
274 | |
275 | linux_boot = (kernel_filename != NULL); | |
276 | ||
277 | /* allocate RAM */ | |
278 | cpu_register_physical_memory(0, ram_size, 0); | |
279 | ||
280 | /* BIOS load */ | |
281 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME); | |
282 | ret = load_image(buf, phys_ram_base + 0x000f0000); | |
283 | if (ret != 0x10000) { | |
284 | fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf); | |
285 | exit(1); | |
286 | } | |
287 | ||
288 | /* VGA BIOS load */ | |
289 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); | |
290 | ret = load_image(buf, phys_ram_base + 0x000c0000); | |
291 | ||
292 | /* setup basic memory access */ | |
293 | cpu_register_physical_memory(0xc0000, 0x10000, 0xc0000 | IO_MEM_ROM); | |
294 | cpu_register_physical_memory(0xf0000, 0x10000, 0xf0000 | IO_MEM_ROM); | |
295 | ||
296 | bochs_bios_init(); | |
297 | ||
298 | if (linux_boot) { | |
299 | uint8_t bootsect[512]; | |
300 | ||
301 | if (bs_table[0] == NULL) { | |
302 | fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n"); | |
303 | exit(1); | |
304 | } | |
305 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME); | |
306 | ret = load_image(buf, bootsect); | |
307 | if (ret != sizeof(bootsect)) { | |
308 | fprintf(stderr, "qemu: could not load linux boot sector '%s'\n", | |
309 | buf); | |
310 | exit(1); | |
311 | } | |
312 | ||
313 | bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect)); | |
314 | ||
315 | /* now we can load the kernel */ | |
316 | ret = load_kernel(kernel_filename, | |
317 | phys_ram_base + KERNEL_LOAD_ADDR, | |
318 | phys_ram_base + KERNEL_PARAMS_ADDR); | |
319 | if (ret < 0) { | |
320 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
321 | kernel_filename); | |
322 | exit(1); | |
323 | } | |
324 | ||
325 | /* load initrd */ | |
326 | initrd_size = 0; | |
327 | if (initrd_filename) { | |
328 | initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR); | |
329 | if (initrd_size < 0) { | |
330 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", | |
331 | initrd_filename); | |
332 | exit(1); | |
333 | } | |
334 | } | |
335 | if (initrd_size > 0) { | |
336 | stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR); | |
337 | stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size); | |
338 | } | |
339 | pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096, | |
340 | kernel_cmdline); | |
341 | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F); | |
342 | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22, | |
343 | KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR); | |
344 | /* loader type */ | |
345 | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01); | |
346 | } | |
347 | ||
348 | /* init basic PC hardware */ | |
b41a2cd1 | 349 | register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
80cabfad FB |
350 | |
351 | vga_initialize(ds, phys_ram_base + ram_size, ram_size, | |
352 | vga_ram_size); | |
353 | ||
b0a21b53 | 354 | rtc_state = rtc_init(0x70, 8); |
b41a2cd1 FB |
355 | register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL); |
356 | register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL); | |
80cabfad FB |
357 | |
358 | pic_init(); | |
b0a21b53 | 359 | pit_init(0x40, 0); |
b41a2cd1 FB |
360 | |
361 | fd = serial_open_device(); | |
362 | serial_init(0x3f8, 4, fd); | |
363 | ||
364 | nb_nics1 = nb_nics; | |
365 | if (nb_nics1 > NE2000_NB_MAX) | |
366 | nb_nics1 = NE2000_NB_MAX; | |
367 | for(i = 0; i < nb_nics1; i++) { | |
368 | ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]); | |
369 | } | |
370 | ||
371 | for(i = 0; i < 2; i++) { | |
372 | ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i], | |
373 | bs_table[2 * i], bs_table[2 * i + 1]); | |
374 | } | |
80cabfad | 375 | kbd_init(); |
80cabfad | 376 | DMA_init(); |
67b915a5 FB |
377 | |
378 | #ifndef _WIN32 | |
379 | /* no audio supported yet for win32 */ | |
380 | AUD_init(); | |
80cabfad | 381 | SB16_init(); |
67b915a5 | 382 | #endif |
80cabfad | 383 | |
baca51fa | 384 | floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table); |
b41a2cd1 FB |
385 | |
386 | cmos_init(ram_size, boot_device); | |
80cabfad | 387 | } |