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1 | 80cabfad | bellard | /*
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2 | 80cabfad | bellard | * QEMU PC System Emulator
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3 | 80cabfad | bellard | *
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4 | 80cabfad | bellard | * Copyright (c) 2003-2004 Fabrice Bellard
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5 | 80cabfad | bellard | *
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6 | 80cabfad | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 80cabfad | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 80cabfad | bellard | * in the Software without restriction, including without limitation the rights
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9 | 80cabfad | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 80cabfad | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 80cabfad | bellard | * furnished to do so, subject to the following conditions:
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12 | 80cabfad | bellard | *
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13 | 80cabfad | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 80cabfad | bellard | * all copies or substantial portions of the Software.
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15 | 80cabfad | bellard | *
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16 | 80cabfad | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 80cabfad | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 80cabfad | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 80cabfad | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 80cabfad | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 80cabfad | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 80cabfad | bellard | * THE SOFTWARE.
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23 | 80cabfad | bellard | */
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24 | 80cabfad | bellard | #include "vl.h" |
25 | 80cabfad | bellard | |
26 | b41a2cd1 | bellard | /* output Bochs bios info messages */
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27 | b41a2cd1 | bellard | //#define DEBUG_BIOS
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28 | b41a2cd1 | bellard | |
29 | 80cabfad | bellard | #define BIOS_FILENAME "bios.bin" |
30 | 80cabfad | bellard | #define VGABIOS_FILENAME "vgabios.bin" |
31 | de9258a8 | bellard | #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin" |
32 | 80cabfad | bellard | #define LINUX_BOOT_FILENAME "linux_boot.bin" |
33 | 80cabfad | bellard | |
34 | 80cabfad | bellard | #define KERNEL_LOAD_ADDR 0x00100000 |
35 | 80cabfad | bellard | #define INITRD_LOAD_ADDR 0x00400000 |
36 | 80cabfad | bellard | #define KERNEL_PARAMS_ADDR 0x00090000 |
37 | 80cabfad | bellard | #define KERNEL_CMDLINE_ADDR 0x00099000 |
38 | 80cabfad | bellard | |
39 | 80cabfad | bellard | int speaker_data_on;
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40 | 80cabfad | bellard | int dummy_refresh_clock;
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41 | baca51fa | bellard | static fdctrl_t *floppy_controller;
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42 | b0a21b53 | bellard | static RTCState *rtc_state;
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43 | ec844b96 | bellard | static PITState *pit;
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44 | 80cabfad | bellard | |
45 | b41a2cd1 | bellard | static void ioport80_write(void *opaque, uint32_t addr, uint32_t data) |
46 | 80cabfad | bellard | { |
47 | 80cabfad | bellard | } |
48 | 80cabfad | bellard | |
49 | f929aad6 | bellard | /* MSDOS compatibility mode FPU exception support */
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50 | f929aad6 | bellard | /* XXX: add IGNNE support */
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51 | f929aad6 | bellard | void cpu_set_ferr(CPUX86State *s)
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52 | f929aad6 | bellard | { |
53 | f929aad6 | bellard | pic_set_irq(13, 1); |
54 | f929aad6 | bellard | } |
55 | f929aad6 | bellard | |
56 | f929aad6 | bellard | static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data) |
57 | f929aad6 | bellard | { |
58 | f929aad6 | bellard | pic_set_irq(13, 0); |
59 | f929aad6 | bellard | } |
60 | f929aad6 | bellard | |
61 | 28ab0e2e | bellard | /* TSC handling */
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62 | 28ab0e2e | bellard | |
63 | 28ab0e2e | bellard | uint64_t cpu_get_tsc(CPUX86State *env) |
64 | 28ab0e2e | bellard | { |
65 | 28ab0e2e | bellard | return qemu_get_clock(vm_clock);
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66 | 28ab0e2e | bellard | } |
67 | 28ab0e2e | bellard | |
68 | 3de388f6 | bellard | /* IRQ handling */
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69 | 3de388f6 | bellard | int cpu_get_pic_interrupt(CPUState *env)
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70 | 3de388f6 | bellard | { |
71 | 3de388f6 | bellard | int intno;
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72 | 3de388f6 | bellard | |
73 | 3de388f6 | bellard | #ifdef TARGET_X86_64
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74 | 3de388f6 | bellard | intno = apic_get_interrupt(env); |
75 | 3de388f6 | bellard | if (intno >= 0) { |
76 | 3de388f6 | bellard | /* set irq request if a PIC irq is still pending */
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77 | 3de388f6 | bellard | /* XXX: improve that */
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78 | 3de388f6 | bellard | pic_update_irq(isa_pic); |
79 | 3de388f6 | bellard | return intno;
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80 | 3de388f6 | bellard | } |
81 | 3de388f6 | bellard | #endif
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82 | 3de388f6 | bellard | /* read the irq from the PIC */
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83 | 3de388f6 | bellard | intno = pic_read_irq(isa_pic); |
84 | 3de388f6 | bellard | return intno;
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85 | 3de388f6 | bellard | } |
86 | 3de388f6 | bellard | |
87 | 3de388f6 | bellard | static void pic_irq_request(void *opaque, int level) |
88 | 3de388f6 | bellard | { |
89 | 3de388f6 | bellard | if (level)
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90 | 3de388f6 | bellard | cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HARD); |
91 | 3de388f6 | bellard | else
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92 | 3de388f6 | bellard | cpu_reset_interrupt(cpu_single_env, CPU_INTERRUPT_HARD); |
93 | 3de388f6 | bellard | } |
94 | 3de388f6 | bellard | |
95 | b0a21b53 | bellard | /* PC cmos mappings */
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96 | b0a21b53 | bellard | |
97 | 80cabfad | bellard | #define REG_EQUIPMENT_BYTE 0x14 |
98 | b0a21b53 | bellard | #define REG_IBM_CENTURY_BYTE 0x32 |
99 | b0a21b53 | bellard | #define REG_IBM_PS2_CENTURY_BYTE 0x37 |
100 | b0a21b53 | bellard | |
101 | b0a21b53 | bellard | |
102 | b0a21b53 | bellard | static inline int to_bcd(RTCState *s, int a) |
103 | b0a21b53 | bellard | { |
104 | b0a21b53 | bellard | return ((a / 10) << 4) | (a % 10); |
105 | b0a21b53 | bellard | } |
106 | 80cabfad | bellard | |
107 | 777428f2 | bellard | static int cmos_get_fd_drive_type(int fd0) |
108 | 777428f2 | bellard | { |
109 | 777428f2 | bellard | int val;
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110 | 777428f2 | bellard | |
111 | 777428f2 | bellard | switch (fd0) {
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112 | 777428f2 | bellard | case 0: |
113 | 777428f2 | bellard | /* 1.44 Mb 3"5 drive */
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114 | 777428f2 | bellard | val = 4;
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115 | 777428f2 | bellard | break;
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116 | 777428f2 | bellard | case 1: |
117 | 777428f2 | bellard | /* 2.88 Mb 3"5 drive */
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118 | 777428f2 | bellard | val = 5;
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119 | 777428f2 | bellard | break;
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120 | 777428f2 | bellard | case 2: |
121 | 777428f2 | bellard | /* 1.2 Mb 5"5 drive */
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122 | 777428f2 | bellard | val = 2;
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123 | 777428f2 | bellard | break;
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124 | 777428f2 | bellard | default:
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125 | 777428f2 | bellard | val = 0;
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126 | 777428f2 | bellard | break;
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127 | 777428f2 | bellard | } |
128 | 777428f2 | bellard | return val;
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129 | 777428f2 | bellard | } |
130 | 777428f2 | bellard | |
131 | ba6c2377 | bellard | static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd) |
132 | ba6c2377 | bellard | { |
133 | ba6c2377 | bellard | RTCState *s = rtc_state; |
134 | ba6c2377 | bellard | int cylinders, heads, sectors;
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135 | ba6c2377 | bellard | bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors); |
136 | ba6c2377 | bellard | rtc_set_memory(s, type_ofs, 47);
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137 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs, cylinders); |
138 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 1, cylinders >> 8); |
139 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 2, heads);
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140 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 3, 0xff); |
141 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 4, 0xff); |
142 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3)); |
143 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 6, cylinders);
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144 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 7, cylinders >> 8); |
145 | ba6c2377 | bellard | rtc_set_memory(s, info_ofs + 8, sectors);
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146 | ba6c2377 | bellard | } |
147 | ba6c2377 | bellard | |
148 | ba6c2377 | bellard | /* hd_table must contain 4 block drivers */
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149 | ba6c2377 | bellard | static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table) |
150 | 80cabfad | bellard | { |
151 | b0a21b53 | bellard | RTCState *s = rtc_state; |
152 | 80cabfad | bellard | int val;
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153 | b41a2cd1 | bellard | int fd0, fd1, nb;
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154 | b0a21b53 | bellard | time_t ti; |
155 | b0a21b53 | bellard | struct tm *tm;
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156 | ba6c2377 | bellard | int i;
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157 | b0a21b53 | bellard | |
158 | b0a21b53 | bellard | /* set the CMOS date */
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159 | b0a21b53 | bellard | time(&ti); |
160 | ee22c2f7 | bellard | if (rtc_utc)
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161 | ee22c2f7 | bellard | tm = gmtime(&ti); |
162 | ee22c2f7 | bellard | else
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163 | ee22c2f7 | bellard | tm = localtime(&ti); |
164 | b0a21b53 | bellard | rtc_set_date(s, tm); |
165 | b0a21b53 | bellard | |
166 | b0a21b53 | bellard | val = to_bcd(s, (tm->tm_year / 100) + 19); |
167 | b0a21b53 | bellard | rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val); |
168 | b0a21b53 | bellard | rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val); |
169 | 80cabfad | bellard | |
170 | b0a21b53 | bellard | /* various important CMOS locations needed by PC/Bochs bios */
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171 | 80cabfad | bellard | |
172 | 80cabfad | bellard | /* memory size */
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173 | 333190eb | bellard | val = 640; /* base memory in K */ |
174 | 333190eb | bellard | rtc_set_memory(s, 0x15, val);
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175 | 333190eb | bellard | rtc_set_memory(s, 0x16, val >> 8); |
176 | 333190eb | bellard | |
177 | 80cabfad | bellard | val = (ram_size / 1024) - 1024; |
178 | 80cabfad | bellard | if (val > 65535) |
179 | 80cabfad | bellard | val = 65535;
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180 | b0a21b53 | bellard | rtc_set_memory(s, 0x17, val);
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181 | b0a21b53 | bellard | rtc_set_memory(s, 0x18, val >> 8); |
182 | b0a21b53 | bellard | rtc_set_memory(s, 0x30, val);
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183 | b0a21b53 | bellard | rtc_set_memory(s, 0x31, val >> 8); |
184 | 80cabfad | bellard | |
185 | 9da98861 | bellard | if (ram_size > (16 * 1024 * 1024)) |
186 | 9da98861 | bellard | val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); |
187 | 9da98861 | bellard | else
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188 | 9da98861 | bellard | val = 0;
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189 | 80cabfad | bellard | if (val > 65535) |
190 | 80cabfad | bellard | val = 65535;
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191 | b0a21b53 | bellard | rtc_set_memory(s, 0x34, val);
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192 | b0a21b53 | bellard | rtc_set_memory(s, 0x35, val >> 8); |
193 | 80cabfad | bellard | |
194 | 80cabfad | bellard | switch(boot_device) {
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195 | 80cabfad | bellard | case 'a': |
196 | 80cabfad | bellard | case 'b': |
197 | b0a21b53 | bellard | rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */ |
198 | 80cabfad | bellard | break;
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199 | 80cabfad | bellard | default:
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200 | 80cabfad | bellard | case 'c': |
201 | b0a21b53 | bellard | rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */ |
202 | 80cabfad | bellard | break;
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203 | 80cabfad | bellard | case 'd': |
204 | b0a21b53 | bellard | rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */ |
205 | 80cabfad | bellard | break;
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206 | 80cabfad | bellard | } |
207 | 80cabfad | bellard | |
208 | b41a2cd1 | bellard | /* floppy type */
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209 | b41a2cd1 | bellard | |
210 | baca51fa | bellard | fd0 = fdctrl_get_drive_type(floppy_controller, 0);
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211 | baca51fa | bellard | fd1 = fdctrl_get_drive_type(floppy_controller, 1);
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212 | 80cabfad | bellard | |
213 | 777428f2 | bellard | val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
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214 | b0a21b53 | bellard | rtc_set_memory(s, 0x10, val);
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215 | b0a21b53 | bellard | |
216 | b0a21b53 | bellard | val = 0;
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217 | b41a2cd1 | bellard | nb = 0;
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218 | 80cabfad | bellard | if (fd0 < 3) |
219 | 80cabfad | bellard | nb++; |
220 | 80cabfad | bellard | if (fd1 < 3) |
221 | 80cabfad | bellard | nb++; |
222 | 80cabfad | bellard | switch (nb) {
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223 | 80cabfad | bellard | case 0: |
224 | 80cabfad | bellard | break;
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225 | 80cabfad | bellard | case 1: |
226 | b0a21b53 | bellard | val |= 0x01; /* 1 drive, ready for boot */ |
227 | 80cabfad | bellard | break;
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228 | 80cabfad | bellard | case 2: |
229 | b0a21b53 | bellard | val |= 0x41; /* 2 drives, ready for boot */ |
230 | 80cabfad | bellard | break;
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231 | 80cabfad | bellard | } |
232 | b0a21b53 | bellard | val |= 0x02; /* FPU is there */ |
233 | b0a21b53 | bellard | val |= 0x04; /* PS/2 mouse installed */ |
234 | b0a21b53 | bellard | rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); |
235 | b0a21b53 | bellard | |
236 | ba6c2377 | bellard | /* hard drives */
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237 | ba6c2377 | bellard | |
238 | ba6c2377 | bellard | rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0)); |
239 | ba6c2377 | bellard | if (hd_table[0]) |
240 | ba6c2377 | bellard | cmos_init_hd(0x19, 0x1b, hd_table[0]); |
241 | ba6c2377 | bellard | if (hd_table[1]) |
242 | ba6c2377 | bellard | cmos_init_hd(0x1a, 0x24, hd_table[1]); |
243 | ba6c2377 | bellard | |
244 | ba6c2377 | bellard | val = 0;
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245 | 40b6ecc6 | bellard | for (i = 0; i < 4; i++) { |
246 | ba6c2377 | bellard | if (hd_table[i]) {
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247 | 46d4767d | bellard | int cylinders, heads, sectors, translation;
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248 | 46d4767d | bellard | /* NOTE: bdrv_get_geometry_hint() returns the physical
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249 | 46d4767d | bellard | geometry. It is always such that: 1 <= sects <= 63, 1
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250 | 46d4767d | bellard | <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
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251 | 46d4767d | bellard | geometry can be different if a translation is done. */
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252 | 46d4767d | bellard | translation = bdrv_get_translation_hint(hd_table[i]); |
253 | 46d4767d | bellard | if (translation == BIOS_ATA_TRANSLATION_AUTO) {
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254 | 46d4767d | bellard | bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors); |
255 | 46d4767d | bellard | if (cylinders <= 1024 && heads <= 16 && sectors <= 63) { |
256 | 46d4767d | bellard | /* No translation. */
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257 | 46d4767d | bellard | translation = 0;
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258 | 46d4767d | bellard | } else {
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259 | 46d4767d | bellard | /* LBA translation. */
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260 | 46d4767d | bellard | translation = 1;
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261 | 46d4767d | bellard | } |
262 | 40b6ecc6 | bellard | } else {
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263 | 46d4767d | bellard | translation--; |
264 | ba6c2377 | bellard | } |
265 | ba6c2377 | bellard | val |= translation << (i * 2);
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266 | ba6c2377 | bellard | } |
267 | 40b6ecc6 | bellard | } |
268 | ba6c2377 | bellard | rtc_set_memory(s, 0x39, val);
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269 | ba6c2377 | bellard | |
270 | ba6c2377 | bellard | /* Disable check of 0x55AA signature on the last two bytes of
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271 | ba6c2377 | bellard | first sector of disk. XXX: make it the default ? */
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272 | ba6c2377 | bellard | // rtc_set_memory(s, 0x38, 1);
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273 | 80cabfad | bellard | } |
274 | 80cabfad | bellard | |
275 | b41a2cd1 | bellard | static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
276 | 80cabfad | bellard | { |
277 | 80cabfad | bellard | speaker_data_on = (val >> 1) & 1; |
278 | ec844b96 | bellard | pit_set_gate(pit, 2, val & 1); |
279 | 80cabfad | bellard | } |
280 | 80cabfad | bellard | |
281 | b41a2cd1 | bellard | static uint32_t speaker_ioport_read(void *opaque, uint32_t addr) |
282 | 80cabfad | bellard | { |
283 | 80cabfad | bellard | int out;
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284 | ec844b96 | bellard | out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
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285 | 80cabfad | bellard | dummy_refresh_clock ^= 1;
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286 | ec844b96 | bellard | return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) | |
287 | 80cabfad | bellard | (dummy_refresh_clock << 4);
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288 | 80cabfad | bellard | } |
289 | 80cabfad | bellard | |
290 | e1a23744 | bellard | static void ioport92_write(void *opaque, uint32_t addr, uint32_t val) |
291 | e1a23744 | bellard | { |
292 | e1a23744 | bellard | cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1); |
293 | e1a23744 | bellard | /* XXX: bit 0 is fast reset */
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294 | e1a23744 | bellard | } |
295 | e1a23744 | bellard | |
296 | e1a23744 | bellard | static uint32_t ioport92_read(void *opaque, uint32_t addr) |
297 | e1a23744 | bellard | { |
298 | e1a23744 | bellard | return ((cpu_single_env->a20_mask >> 20) & 1) << 1; |
299 | e1a23744 | bellard | } |
300 | e1a23744 | bellard | |
301 | 80cabfad | bellard | /***********************************************************/
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302 | 80cabfad | bellard | /* Bochs BIOS debug ports */
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303 | 80cabfad | bellard | |
304 | b41a2cd1 | bellard | void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) |
305 | 80cabfad | bellard | { |
306 | a2f659ee | bellard | static const char shutdown_str[8] = "Shutdown"; |
307 | a2f659ee | bellard | static int shutdown_index = 0; |
308 | a2f659ee | bellard | |
309 | 80cabfad | bellard | switch(addr) {
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310 | 80cabfad | bellard | /* Bochs BIOS messages */
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311 | 80cabfad | bellard | case 0x400: |
312 | 80cabfad | bellard | case 0x401: |
313 | 80cabfad | bellard | fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
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314 | 80cabfad | bellard | exit(1);
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315 | 80cabfad | bellard | case 0x402: |
316 | 80cabfad | bellard | case 0x403: |
317 | 80cabfad | bellard | #ifdef DEBUG_BIOS
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318 | 80cabfad | bellard | fprintf(stderr, "%c", val);
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319 | 80cabfad | bellard | #endif
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320 | 80cabfad | bellard | break;
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321 | a2f659ee | bellard | case 0x8900: |
322 | a2f659ee | bellard | /* same as Bochs power off */
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323 | a2f659ee | bellard | if (val == shutdown_str[shutdown_index]) {
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324 | a2f659ee | bellard | shutdown_index++; |
325 | a2f659ee | bellard | if (shutdown_index == 8) { |
326 | a2f659ee | bellard | shutdown_index = 0;
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327 | a2f659ee | bellard | qemu_system_shutdown_request(); |
328 | a2f659ee | bellard | } |
329 | a2f659ee | bellard | } else {
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330 | a2f659ee | bellard | shutdown_index = 0;
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331 | a2f659ee | bellard | } |
332 | a2f659ee | bellard | break;
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333 | 80cabfad | bellard | |
334 | 80cabfad | bellard | /* LGPL'ed VGA BIOS messages */
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335 | 80cabfad | bellard | case 0x501: |
336 | 80cabfad | bellard | case 0x502: |
337 | 80cabfad | bellard | fprintf(stderr, "VGA BIOS panic, line %d\n", val);
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338 | 80cabfad | bellard | exit(1);
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339 | 80cabfad | bellard | case 0x500: |
340 | 80cabfad | bellard | case 0x503: |
341 | 80cabfad | bellard | #ifdef DEBUG_BIOS
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342 | 80cabfad | bellard | fprintf(stderr, "%c", val);
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343 | 80cabfad | bellard | #endif
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344 | 80cabfad | bellard | break;
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345 | 80cabfad | bellard | } |
346 | 80cabfad | bellard | } |
347 | 80cabfad | bellard | |
348 | 80cabfad | bellard | void bochs_bios_init(void) |
349 | 80cabfad | bellard | { |
350 | b41a2cd1 | bellard | register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
351 | b41a2cd1 | bellard | register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); |
352 | b41a2cd1 | bellard | register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); |
353 | b41a2cd1 | bellard | register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); |
354 | a2f659ee | bellard | register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); |
355 | b41a2cd1 | bellard | |
356 | b41a2cd1 | bellard | register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); |
357 | b41a2cd1 | bellard | register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); |
358 | b41a2cd1 | bellard | register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); |
359 | b41a2cd1 | bellard | register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); |
360 | 80cabfad | bellard | } |
361 | 80cabfad | bellard | |
362 | 80cabfad | bellard | |
363 | 80cabfad | bellard | int load_kernel(const char *filename, uint8_t *addr, |
364 | 80cabfad | bellard | uint8_t *real_addr) |
365 | 80cabfad | bellard | { |
366 | 80cabfad | bellard | int fd, size;
|
367 | 80cabfad | bellard | int setup_sects;
|
368 | 80cabfad | bellard | |
369 | 096b7ea4 | bellard | fd = open(filename, O_RDONLY | O_BINARY); |
370 | 80cabfad | bellard | if (fd < 0) |
371 | 80cabfad | bellard | return -1; |
372 | 80cabfad | bellard | |
373 | 80cabfad | bellard | /* load 16 bit code */
|
374 | 80cabfad | bellard | if (read(fd, real_addr, 512) != 512) |
375 | 80cabfad | bellard | goto fail;
|
376 | 80cabfad | bellard | setup_sects = real_addr[0x1F1];
|
377 | 80cabfad | bellard | if (!setup_sects)
|
378 | 80cabfad | bellard | setup_sects = 4;
|
379 | 80cabfad | bellard | if (read(fd, real_addr + 512, setup_sects * 512) != |
380 | 80cabfad | bellard | setup_sects * 512)
|
381 | 80cabfad | bellard | goto fail;
|
382 | 80cabfad | bellard | |
383 | 80cabfad | bellard | /* load 32 bit code */
|
384 | 80cabfad | bellard | size = read(fd, addr, 16 * 1024 * 1024); |
385 | 80cabfad | bellard | if (size < 0) |
386 | 80cabfad | bellard | goto fail;
|
387 | 80cabfad | bellard | close(fd); |
388 | 80cabfad | bellard | return size;
|
389 | 80cabfad | bellard | fail:
|
390 | 80cabfad | bellard | close(fd); |
391 | 80cabfad | bellard | return -1; |
392 | 80cabfad | bellard | } |
393 | 80cabfad | bellard | |
394 | b41a2cd1 | bellard | static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
395 | b41a2cd1 | bellard | static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
396 | b41a2cd1 | bellard | static const int ide_irq[2] = { 14, 15 }; |
397 | b41a2cd1 | bellard | |
398 | b41a2cd1 | bellard | #define NE2000_NB_MAX 6 |
399 | b41a2cd1 | bellard | |
400 | 8d11df9e | bellard | static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
401 | b41a2cd1 | bellard | static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
402 | b41a2cd1 | bellard | |
403 | 8d11df9e | bellard | static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; |
404 | 8d11df9e | bellard | static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 }; |
405 | 8d11df9e | bellard | |
406 | 6508fe59 | bellard | static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; |
407 | 6508fe59 | bellard | static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; |
408 | 6508fe59 | bellard | |
409 | 80cabfad | bellard | /* PC hardware initialisation */
|
410 | b5ff2d6e | bellard | static void pc_init1(int ram_size, int vga_ram_size, int boot_device, |
411 | b5ff2d6e | bellard | DisplayState *ds, const char **fd_filename, int snapshot, |
412 | b5ff2d6e | bellard | const char *kernel_filename, const char *kernel_cmdline, |
413 | b5ff2d6e | bellard | const char *initrd_filename) |
414 | 80cabfad | bellard | { |
415 | 80cabfad | bellard | char buf[1024]; |
416 | 82c643ff | bellard | int ret, linux_boot, initrd_size, i, nb_nics1;
|
417 | 7587cf44 | bellard | unsigned long bios_offset, vga_bios_offset; |
418 | 7587cf44 | bellard | int bios_size, isa_bios_size;
|
419 | 46e50e9d | bellard | PCIBus *pci_bus; |
420 | 46e50e9d | bellard | |
421 | 80cabfad | bellard | linux_boot = (kernel_filename != NULL);
|
422 | 80cabfad | bellard | |
423 | 80cabfad | bellard | /* allocate RAM */
|
424 | 80cabfad | bellard | cpu_register_physical_memory(0, ram_size, 0); |
425 | 80cabfad | bellard | |
426 | 80cabfad | bellard | /* BIOS load */
|
427 | 7587cf44 | bellard | bios_offset = ram_size + vga_ram_size; |
428 | 7587cf44 | bellard | vga_bios_offset = bios_offset + 256 * 1024; |
429 | 7587cf44 | bellard | |
430 | 80cabfad | bellard | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME); |
431 | 7587cf44 | bellard | bios_size = get_image_size(buf); |
432 | 7587cf44 | bellard | if (bios_size <= 0 || |
433 | 7587cf44 | bellard | (bios_size % 65536) != 0 || |
434 | 7587cf44 | bellard | bios_size > (256 * 1024)) { |
435 | 7587cf44 | bellard | goto bios_error;
|
436 | 7587cf44 | bellard | } |
437 | 7587cf44 | bellard | ret = load_image(buf, phys_ram_base + bios_offset); |
438 | 7587cf44 | bellard | if (ret != bios_size) {
|
439 | 7587cf44 | bellard | bios_error:
|
440 | 80cabfad | bellard | fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
|
441 | 80cabfad | bellard | exit(1);
|
442 | 80cabfad | bellard | } |
443 | 7587cf44 | bellard | |
444 | 80cabfad | bellard | /* VGA BIOS load */
|
445 | de9258a8 | bellard | if (cirrus_vga_enabled) {
|
446 | de9258a8 | bellard | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME); |
447 | de9258a8 | bellard | } else {
|
448 | de9258a8 | bellard | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); |
449 | de9258a8 | bellard | } |
450 | 7587cf44 | bellard | ret = load_image(buf, phys_ram_base + vga_bios_offset); |
451 | 80cabfad | bellard | |
452 | 80cabfad | bellard | /* setup basic memory access */
|
453 | 7587cf44 | bellard | cpu_register_physical_memory(0xc0000, 0x10000, |
454 | 7587cf44 | bellard | vga_bios_offset | IO_MEM_ROM); |
455 | 7587cf44 | bellard | |
456 | 7587cf44 | bellard | /* map the last 128KB of the BIOS in ISA space */
|
457 | 7587cf44 | bellard | isa_bios_size = bios_size; |
458 | 7587cf44 | bellard | if (isa_bios_size > (128 * 1024)) |
459 | 7587cf44 | bellard | isa_bios_size = 128 * 1024; |
460 | 7587cf44 | bellard | cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size, |
461 | 7587cf44 | bellard | IO_MEM_UNASSIGNED); |
462 | 7587cf44 | bellard | cpu_register_physical_memory(0x100000 - isa_bios_size,
|
463 | 7587cf44 | bellard | isa_bios_size, |
464 | 7587cf44 | bellard | (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); |
465 | 7587cf44 | bellard | /* map all the bios at the top of memory */
|
466 | 7587cf44 | bellard | cpu_register_physical_memory((uint32_t)(-bios_size), |
467 | 7587cf44 | bellard | bios_size, bios_offset | IO_MEM_ROM); |
468 | 80cabfad | bellard | |
469 | 80cabfad | bellard | bochs_bios_init(); |
470 | 80cabfad | bellard | |
471 | 80cabfad | bellard | if (linux_boot) {
|
472 | 80cabfad | bellard | uint8_t bootsect[512];
|
473 | 41b9be47 | bellard | uint8_t old_bootsect[512];
|
474 | 80cabfad | bellard | |
475 | 80cabfad | bellard | if (bs_table[0] == NULL) { |
476 | 80cabfad | bellard | fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
|
477 | 80cabfad | bellard | exit(1);
|
478 | 80cabfad | bellard | } |
479 | 80cabfad | bellard | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME); |
480 | 80cabfad | bellard | ret = load_image(buf, bootsect); |
481 | 80cabfad | bellard | if (ret != sizeof(bootsect)) { |
482 | 80cabfad | bellard | fprintf(stderr, "qemu: could not load linux boot sector '%s'\n",
|
483 | 80cabfad | bellard | buf); |
484 | 80cabfad | bellard | exit(1);
|
485 | 80cabfad | bellard | } |
486 | 80cabfad | bellard | |
487 | 41b9be47 | bellard | if (bdrv_read(bs_table[0], 0, old_bootsect, 1) >= 0) { |
488 | 41b9be47 | bellard | /* copy the MSDOS partition table */
|
489 | 41b9be47 | bellard | memcpy(bootsect + 0x1be, old_bootsect + 0x1be, 0x40); |
490 | 41b9be47 | bellard | } |
491 | 41b9be47 | bellard | |
492 | 80cabfad | bellard | bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect)); |
493 | 80cabfad | bellard | |
494 | 80cabfad | bellard | /* now we can load the kernel */
|
495 | 80cabfad | bellard | ret = load_kernel(kernel_filename, |
496 | 80cabfad | bellard | phys_ram_base + KERNEL_LOAD_ADDR, |
497 | 80cabfad | bellard | phys_ram_base + KERNEL_PARAMS_ADDR); |
498 | 80cabfad | bellard | if (ret < 0) { |
499 | 80cabfad | bellard | fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
500 | 80cabfad | bellard | kernel_filename); |
501 | 80cabfad | bellard | exit(1);
|
502 | 80cabfad | bellard | } |
503 | 80cabfad | bellard | |
504 | 80cabfad | bellard | /* load initrd */
|
505 | 80cabfad | bellard | initrd_size = 0;
|
506 | 80cabfad | bellard | if (initrd_filename) {
|
507 | 80cabfad | bellard | initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR); |
508 | 80cabfad | bellard | if (initrd_size < 0) { |
509 | 80cabfad | bellard | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
510 | 80cabfad | bellard | initrd_filename); |
511 | 80cabfad | bellard | exit(1);
|
512 | 80cabfad | bellard | } |
513 | 80cabfad | bellard | } |
514 | 80cabfad | bellard | if (initrd_size > 0) { |
515 | 80cabfad | bellard | stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
|
516 | 80cabfad | bellard | stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
|
517 | 80cabfad | bellard | } |
518 | 80cabfad | bellard | pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
|
519 | 80cabfad | bellard | kernel_cmdline); |
520 | 80cabfad | bellard | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F); |
521 | 80cabfad | bellard | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
|
522 | 80cabfad | bellard | KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR); |
523 | 80cabfad | bellard | /* loader type */
|
524 | 80cabfad | bellard | stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01); |
525 | 80cabfad | bellard | } |
526 | 80cabfad | bellard | |
527 | 69b91039 | bellard | if (pci_enabled) {
|
528 | 46e50e9d | bellard | pci_bus = i440fx_init(); |
529 | 46e50e9d | bellard | piix3_init(pci_bus); |
530 | 46e50e9d | bellard | } else {
|
531 | 46e50e9d | bellard | pci_bus = NULL;
|
532 | 69b91039 | bellard | } |
533 | 69b91039 | bellard | |
534 | 80cabfad | bellard | /* init basic PC hardware */
|
535 | b41a2cd1 | bellard | register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
536 | 80cabfad | bellard | |
537 | f929aad6 | bellard | register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); |
538 | f929aad6 | bellard | |
539 | 1f04275e | bellard | if (cirrus_vga_enabled) {
|
540 | 1f04275e | bellard | if (pci_enabled) {
|
541 | 46e50e9d | bellard | pci_cirrus_vga_init(pci_bus, |
542 | 46e50e9d | bellard | ds, phys_ram_base + ram_size, ram_size, |
543 | 1f04275e | bellard | vga_ram_size); |
544 | 1f04275e | bellard | } else {
|
545 | 1f04275e | bellard | isa_cirrus_vga_init(ds, phys_ram_base + ram_size, ram_size, |
546 | 1f04275e | bellard | vga_ram_size); |
547 | 1f04275e | bellard | } |
548 | 1f04275e | bellard | } else {
|
549 | 46e50e9d | bellard | vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size, |
550 | 46e50e9d | bellard | vga_ram_size); |
551 | 1f04275e | bellard | } |
552 | 80cabfad | bellard | |
553 | b0a21b53 | bellard | rtc_state = rtc_init(0x70, 8); |
554 | b41a2cd1 | bellard | register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL); |
555 | b41a2cd1 | bellard | register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL); |
556 | 80cabfad | bellard | |
557 | e1a23744 | bellard | register_ioport_read(0x92, 1, 1, ioport92_read, NULL); |
558 | e1a23744 | bellard | register_ioport_write(0x92, 1, 1, ioport92_write, NULL); |
559 | e1a23744 | bellard | |
560 | 75598f61 | bellard | if (pci_enabled)
|
561 | 75598f61 | bellard | apic_init(cpu_single_env); |
562 | 3de388f6 | bellard | isa_pic = pic_init(pic_irq_request, cpu_single_env); |
563 | ec844b96 | bellard | pit = pit_init(0x40, 0); |
564 | b41a2cd1 | bellard | |
565 | 8d11df9e | bellard | for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
566 | 8d11df9e | bellard | if (serial_hds[i]) {
|
567 | 8d11df9e | bellard | serial_init(serial_io[i], serial_irq[i], serial_hds[i]); |
568 | 8d11df9e | bellard | } |
569 | 8d11df9e | bellard | } |
570 | b41a2cd1 | bellard | |
571 | 6508fe59 | bellard | for(i = 0; i < MAX_PARALLEL_PORTS; i++) { |
572 | 6508fe59 | bellard | if (parallel_hds[i]) {
|
573 | 6508fe59 | bellard | parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]); |
574 | 6508fe59 | bellard | } |
575 | 6508fe59 | bellard | } |
576 | 6508fe59 | bellard | |
577 | 69b91039 | bellard | if (pci_enabled) {
|
578 | 69b91039 | bellard | for(i = 0; i < nb_nics; i++) { |
579 | 46e50e9d | bellard | pci_ne2000_init(pci_bus, &nd_table[i]); |
580 | 69b91039 | bellard | } |
581 | 46e50e9d | bellard | pci_piix3_ide_init(pci_bus, bs_table); |
582 | 69b91039 | bellard | } else {
|
583 | 69b91039 | bellard | nb_nics1 = nb_nics; |
584 | 69b91039 | bellard | if (nb_nics1 > NE2000_NB_MAX)
|
585 | 69b91039 | bellard | nb_nics1 = NE2000_NB_MAX; |
586 | 69b91039 | bellard | for(i = 0; i < nb_nics1; i++) { |
587 | 69b91039 | bellard | isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]); |
588 | 69b91039 | bellard | } |
589 | b41a2cd1 | bellard | |
590 | 69b91039 | bellard | for(i = 0; i < 2; i++) { |
591 | 69b91039 | bellard | isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i], |
592 | 69b91039 | bellard | bs_table[2 * i], bs_table[2 * i + 1]); |
593 | 69b91039 | bellard | } |
594 | b41a2cd1 | bellard | } |
595 | 69b91039 | bellard | |
596 | 80cabfad | bellard | kbd_init(); |
597 | 7c29d0c0 | bellard | DMA_init(0);
|
598 | 67b915a5 | bellard | |
599 | aaaa7df6 | bellard | if (audio_enabled) {
|
600 | aaaa7df6 | bellard | AUD_init(); |
601 | fb065187 | bellard | #ifdef USE_SB16
|
602 | fb065187 | bellard | if (sb16_enabled)
|
603 | fb065187 | bellard | SB16_init (); |
604 | fb065187 | bellard | #endif
|
605 | fb065187 | bellard | #ifdef CONFIG_ADLIB
|
606 | fb065187 | bellard | if (adlib_enabled)
|
607 | fb065187 | bellard | Adlib_init (); |
608 | fb065187 | bellard | #endif
|
609 | fb065187 | bellard | #ifdef USE_GUS
|
610 | fb065187 | bellard | if (gus_enabled)
|
611 | fb065187 | bellard | GUS_init (); |
612 | fb065187 | bellard | #endif
|
613 | aaaa7df6 | bellard | } |
614 | 80cabfad | bellard | |
615 | baca51fa | bellard | floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table); |
616 | b41a2cd1 | bellard | |
617 | ba6c2377 | bellard | cmos_init(ram_size, boot_device, bs_table); |
618 | 69b91039 | bellard | |
619 | 69b91039 | bellard | /* must be done after all PCI devices are instanciated */
|
620 | 69b91039 | bellard | /* XXX: should be done in the Bochs BIOS */
|
621 | 69b91039 | bellard | if (pci_enabled) {
|
622 | 69b91039 | bellard | pci_bios_init(); |
623 | 69b91039 | bellard | } |
624 | 80cabfad | bellard | } |
625 | b5ff2d6e | bellard | |
626 | b5ff2d6e | bellard | QEMUMachine pc_machine = { |
627 | b5ff2d6e | bellard | "pc",
|
628 | b5ff2d6e | bellard | "Standard PC",
|
629 | b5ff2d6e | bellard | pc_init1, |
630 | b5ff2d6e | bellard | }; |