This source file includes following definitions.
- setup_arch
- get_cpuinfo
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11 #include <linux/errno.h>
12 #include <linux/sched.h>
13 #include <linux/kernel.h>
14 #include <linux/mm.h>
15 #include <linux/stddef.h>
16 #include <linux/unistd.h>
17 #include <linux/ptrace.h>
18 #include <linux/malloc.h>
19 #include <linux/ldt.h>
20 #include <linux/user.h>
21 #include <linux/a.out.h>
22 #include <linux/tty.h>
23 #include <linux/ioport.h>
24 #include <linux/delay.h>
25 #include <linux/config.h>
26
27 #include <asm/segment.h>
28 #include <asm/system.h>
29 #include <asm/smp.h>
30
31
32
33
34 char hard_math = 0;
35 char x86 = 0;
36 char x86_model = 0;
37 char x86_mask = 0;
38 int x86_capability = 0;
39 int fdiv_bug = 0;
40
41 char x86_vendor_id[13] = "Unknown";
42
43 char ignore_irq13 = 0;
44 char wp_works_ok = -1;
45 char hlt_works_ok = 1;
46
47
48
49
50 int EISA_bus = 0;
51
52
53
54
55 struct drive_info_struct { char dummy[32]; } drive_info;
56 struct screen_info screen_info;
57
58 unsigned char aux_device_present;
59 extern int ramdisk_size;
60 extern int root_mountflags;
61 extern int _etext, _edata, _end;
62
63 extern char empty_zero_page[PAGE_SIZE];
64
65
66
67
68 #define PARAM empty_zero_page
69 #define EXT_MEM_K (*(unsigned short *) (PARAM+2))
70 #define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
71 #define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
72 #define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
73 #define RAMDISK_SIZE (*(unsigned short *) (PARAM+0x1F8))
74 #define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
75 #define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
76 #define COMMAND_LINE ((char *) (PARAM+2048))
77 #define COMMAND_LINE_SIZE 256
78
79 static char command_line[COMMAND_LINE_SIZE] = { 0, };
80
81 void setup_arch(char **cmdline_p,
82 unsigned long * memory_start_p, unsigned long * memory_end_p)
83 {
84 unsigned long memory_start, memory_end;
85 char c = ' ', *to = command_line, *from = COMMAND_LINE;
86 int len = 0;
87 static unsigned char smptrap=0;
88
89 if(smptrap==1)
90 {
91 return;
92 }
93 smptrap=1;
94
95 ROOT_DEV = to_kdev_t(ORIG_ROOT_DEV);
96 drive_info = DRIVE_INFO;
97 screen_info = SCREEN_INFO;
98 aux_device_present = AUX_DEVICE_INFO;
99 memory_end = (1<<20) + (EXT_MEM_K<<10);
100 memory_end &= PAGE_MASK;
101 ramdisk_size = RAMDISK_SIZE;
102 #ifdef CONFIG_MAX_16M
103 if (memory_end > 16*1024*1024)
104 memory_end = 16*1024*1024;
105 #endif
106 if (MOUNT_ROOT_RDONLY)
107 root_mountflags |= MS_RDONLY;
108 memory_start = (unsigned long) &_end;
109 init_task.mm->start_code = TASK_SIZE;
110 init_task.mm->end_code = TASK_SIZE + (unsigned long) &_etext;
111 init_task.mm->end_data = TASK_SIZE + (unsigned long) &_edata;
112 init_task.mm->brk = TASK_SIZE + (unsigned long) &_end;
113
114 for (;;) {
115
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117
118
119
120 if (c == ' ' && *(const unsigned long *)from == *(const unsigned long *)"mem=") {
121 if (!memcmp(from+4, "nopentium", 9)) {
122 from += 9+4;
123 x86_capability &= ~8;
124 } else {
125 memory_end = simple_strtoul(from+4, &from, 0);
126 if ( *from == 'K' || *from == 'k' ) {
127 memory_end = memory_end << 10;
128 from++;
129 } else if ( *from == 'M' || *from == 'm' ) {
130 memory_end = memory_end << 20;
131 from++;
132 }
133 }
134 }
135 c = *(from++);
136 if (!c)
137 break;
138 if (COMMAND_LINE_SIZE <= ++len)
139 break;
140 *(to++) = c;
141 }
142 *to = '\0';
143 *cmdline_p = command_line;
144 *memory_start_p = memory_start;
145 *memory_end_p = memory_end;
146
147 request_region(0x00,0x20,"dma1");
148 request_region(0x40,0x20,"timer");
149 request_region(0x70,0x10,"rtc");
150 request_region(0x80,0x20,"dma page reg");
151 request_region(0xc0,0x20,"dma2");
152 request_region(0xf0,0x10,"npu");
153 }
154
155 int get_cpuinfo(char * buffer)
156 {
157 static const char *model[2][9]={{"DX","SX","DX/2","4","SX/2","6",
158 "DX/2-WB","DX/4"},
159 {"Pentium 60/66","Pentium 75+","3",
160 "4","5","6","7","8"}};
161 char mask[2];
162 #ifndef CONFIG_SMP
163 mask[0] = x86_mask+'@';
164 mask[1] = '\0';
165 return sprintf(buffer,"cpu\t\t: %c86\n"
166 "model\t\t: %s\n"
167 "mask\t\t: %s\n"
168 "vid\t\t: %s\n"
169 "fdiv_bug\t: %s\n"
170 "math\t\t: %s\n"
171 "hlt\t\t: %s\n"
172 "wp\t\t: %s\n"
173 "Integrated NPU\t: %s\n"
174 "Enhanced VM86\t: %s\n"
175 "IO Breakpoints\t: %s\n"
176 "4MB Pages\t: %s\n"
177 "TS Counters\t: %s\n"
178 "Pentium MSR\t: %s\n"
179 "Mach. Ch. Exep.\t: %s\n"
180 "CMPXCHGB8B\t: %s\n"
181 "BogoMips\t: %lu.%02lu\n",
182 x86+'0',
183 x86_model ? model[x86-4][x86_model-1] : "Unknown",
184 x86_mask ? mask : "Unknown",
185 x86_vendor_id,
186 fdiv_bug ? "yes" : "no",
187 hard_math ? "yes" : "no",
188 hlt_works_ok ? "yes" : "no",
189 wp_works_ok ? "yes" : "no",
190 x86_capability & 1 ? "yes" : "no",
191 x86_capability & 2 ? "yes" : "no",
192 x86_capability & 4 ? "yes" : "no",
193 x86_capability & 8 ? "yes" : "no",
194 x86_capability & 16 ? "yes" : "no",
195 x86_capability & 32 ? "yes" : "no",
196 x86_capability & 128 ? "yes" : "no",
197 x86_capability & 256 ? "yes" : "no",
198 loops_per_sec/500000, (loops_per_sec/5000) % 100
199 );
200 #else
201 char *bp=buffer;
202 int i;
203 bp+=sprintf(bp,"cpu\t\t: ");
204 for(i=0;i<32;i++)
205 if(cpu_present_map&(1<<i))
206 bp+=sprintf(bp,"%c86 ",cpu_data[i].x86+'0');
207 bp+=sprintf(bp,"\nmodel\t\t: ");
208 for(i=0;i<32;i++)
209 if(cpu_present_map&(1<<i))
210 bp+=sprintf(bp,"%-16s",cpu_data[i].x86_model?
211 model[cpu_data[i].x86-4][cpu_data[i].x86_model-1]:"Unknown");
212 bp+=sprintf(bp,"\nmask\t\t: ");
213 for(i=0;i<32;i++)
214 if(cpu_present_map&(1<<i))
215 {
216 mask[0] = cpu_data[i].x86_mask+'@';
217 mask[1] = '\0';
218 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_mask ? mask : "Unknown");
219 }
220 bp+=sprintf(bp,"\nvid\t\t: ");
221 for(i=0;i<32;i++)
222 if(cpu_present_map&(1<<i))
223 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_vendor_id);
224 bp+=sprintf(bp,"\nfdiv_bug\t: ");
225 for(i=0;i<32;i++)
226 if(cpu_present_map&(1<<i))
227 bp+=sprintf(bp,"%-16s", cpu_data[i].fdiv_bug?"yes":"no");
228 bp+=sprintf(bp,"\nmath\t\t: ");
229 for(i=0;i<32;i++)
230 if(cpu_present_map&(1<<i))
231 bp+=sprintf(bp,"%-16s", cpu_data[i].hard_math?"yes":"no");
232 bp+=sprintf(bp,"\nhlt\t\t: ");
233 for(i=0;i<32;i++)
234 if(cpu_present_map&(1<<i))
235 bp+=sprintf(bp,"%-16s", cpu_data[i].hlt_works_ok?"yes":"no");
236 bp+=sprintf(bp,"\nwp\t\t: ");
237 for(i=0;i<32;i++)
238 if(cpu_present_map&(1<<i))
239 bp+=sprintf(bp,"%-16s", cpu_data[i].wp_works_ok?"yes":"no");
240 bp+=sprintf(bp,"\nIntegrated NPU\t: ");
241 for(i=0;i<32;i++)
242 if(cpu_present_map&(1<<i))
243 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_capability&1?"yes":"no");
244 bp+=sprintf(bp,"\nEnhanced VM86\t: ");
245 for(i=0;i<32;i++)
246 if(cpu_present_map&(1<<i))
247 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_capability&2?"yes":"no");
248 bp+=sprintf(bp,"\nIO Breakpoints\t: ");
249 for(i=0;i<32;i++)
250 if(cpu_present_map&(1<<i))
251 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&4)?"yes":"no");
252 bp+=sprintf(bp,"\n4MB Pages\t: ");
253 for(i=0;i<32;i++)
254 if(cpu_present_map&(1<<i))
255 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability)&8?"yes":"no");
256 bp+=sprintf(bp,"\nTS Counters\t: ");
257 for(i=0;i<32;i++)
258 if(cpu_present_map&(1<<i))
259 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&16)?"yes":"no");
260 bp+=sprintf(bp,"\nPentium MSR\t: ");
261 for(i=0;i<32;i++)
262 if(cpu_present_map&(1<<i))
263 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&32)?"yes":"no");
264 bp+=sprintf(bp,"\nMach. Ch. Exep.\t: ");
265 for(i=0;i<32;i++)
266 if(cpu_present_map&(1<<i))
267 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&128)?"yes":"no");
268 bp+=sprintf(bp,"\nCMPXCHG8B\t: ");
269 for(i=0;i<32;i++)
270 if(cpu_present_map&(1<<i))
271 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&256)?"yes":"no");
272 bp+=sprintf(bp,"\nBogoMips\t: ");
273 for(i=0;i<32;i++)
274 {
275 char tmp[17];
276 if(cpu_present_map&(1<<i))
277 {
278 sprintf(tmp,"%lu.%02lu",cpu_data[i].udelay_val/500000L,
279 (cpu_data[i].udelay_val/5000L)%100);
280 bp+=sprintf(bp,"%-16s",tmp);
281 }
282 }
283 *bp++='\n';
284 return bp-buffer;
285 #endif
286 }
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