This source file includes following definitions.
- setup_arch
- i486model
- i586model
- getmodel
- 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 #ifdef CONFIG_APM
27 #include <linux/apm_bios.h>
28 #endif
29 #ifdef CONFIG_BLK_DEV_RAM
30 #include <linux/blk.h>
31 #endif
32 #include <asm/segment.h>
33 #include <asm/system.h>
34 #include <asm/smp.h>
35
36
37
38
39 char hard_math = 0;
40 char x86 = 0;
41 char x86_model = 0;
42 char x86_mask = 0;
43 int x86_capability = 0;
44 int fdiv_bug = 0;
45
46 char x86_vendor_id[13] = "Unknown";
47
48 char ignore_irq13 = 0;
49 char wp_works_ok = -1;
50 char hlt_works_ok = 1;
51
52
53
54
55 int EISA_bus = 0;
56
57
58
59
60 struct drive_info_struct { char dummy[32]; } drive_info;
61 struct screen_info screen_info;
62 #ifdef CONFIG_APM
63 struct apm_bios_info apm_bios_info;
64 #endif
65
66 unsigned char aux_device_present;
67
68 #ifdef CONFIG_BLK_DEV_RAM
69 extern int rd_doload;
70 extern int rd_prompt;
71 extern int rd_image_start;
72 #endif
73
74 extern int root_mountflags;
75 extern int _etext, _edata, _end;
76
77 extern char empty_zero_page[PAGE_SIZE];
78
79
80
81
82 #define PARAM empty_zero_page
83 #define EXT_MEM_K (*(unsigned short *) (PARAM+2))
84 #ifdef CONFIG_APM
85 #define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+64))
86 #endif
87 #define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
88 #define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
89 #define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
90 #define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
91 #define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
92 #define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
93 #define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
94 #define KERNEL_START (*(unsigned long *) (PARAM+0x214))
95 #define INITRD_START (*(unsigned long *) (PARAM+0x218))
96 #define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
97 #define COMMAND_LINE ((char *) (PARAM+2048))
98 #define COMMAND_LINE_SIZE 256
99
100 #define RAMDISK_IMAGE_START_MASK 0x07FF
101 #define RAMDISK_PROMPT_FLAG 0x8000
102 #define RAMDISK_LOAD_FLAG 0x4000
103
104 static char command_line[COMMAND_LINE_SIZE] = { 0, };
105 char saved_command_line[COMMAND_LINE_SIZE];
106
107 void setup_arch(char **cmdline_p,
108 unsigned long * memory_start_p, unsigned long * memory_end_p)
109 {
110 unsigned long memory_start, memory_end;
111 char c = ' ', *to = command_line, *from = COMMAND_LINE;
112 int len = 0;
113 static unsigned char smptrap=0;
114
115 if(smptrap==1)
116 {
117 return;
118 }
119 smptrap=1;
120
121 ROOT_DEV = to_kdev_t(ORIG_ROOT_DEV);
122 drive_info = DRIVE_INFO;
123 screen_info = SCREEN_INFO;
124 #ifdef CONFIG_APM
125 apm_bios_info = APM_BIOS_INFO;
126 #endif
127 aux_device_present = AUX_DEVICE_INFO;
128 memory_end = (1<<20) + (EXT_MEM_K<<10);
129 memory_end &= PAGE_MASK;
130 #ifdef CONFIG_BLK_DEV_RAM
131 rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
132 rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
133 rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
134 #endif
135 #ifdef CONFIG_MAX_16M
136 if (memory_end > 16*1024*1024)
137 memory_end = 16*1024*1024;
138 #endif
139 if (!MOUNT_ROOT_RDONLY)
140 root_mountflags &= ~MS_RDONLY;
141 memory_start = (unsigned long) &_end;
142 init_task.mm->start_code = TASK_SIZE;
143 init_task.mm->end_code = TASK_SIZE + (unsigned long) &_etext;
144 init_task.mm->end_data = TASK_SIZE + (unsigned long) &_edata;
145 init_task.mm->brk = TASK_SIZE + (unsigned long) &_end;
146
147
148 memcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
149 saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
150
151 for (;;) {
152
153
154
155
156
157 if (c == ' ' && *(const unsigned long *)from == *(const unsigned long *)"mem=") {
158 if (to != command_line) to--;
159 if (!memcmp(from+4, "nopentium", 9)) {
160 from += 9+4;
161 x86_capability &= ~8;
162 } else {
163 memory_end = simple_strtoul(from+4, &from, 0);
164 if ( *from == 'K' || *from == 'k' ) {
165 memory_end = memory_end << 10;
166 from++;
167 } else if ( *from == 'M' || *from == 'm' ) {
168 memory_end = memory_end << 20;
169 from++;
170 }
171 }
172 }
173 c = *(from++);
174 if (!c)
175 break;
176 if (COMMAND_LINE_SIZE <= ++len)
177 break;
178 *(to++) = c;
179 }
180 *to = '\0';
181 *cmdline_p = command_line;
182 *memory_start_p = memory_start;
183 *memory_end_p = memory_end;
184
185 #ifdef CONFIG_BLK_DEV_INITRD
186 if (LOADER_TYPE) {
187 initrd_start = INITRD_START;
188 initrd_end = INITRD_START+INITRD_SIZE;
189 if (initrd_end > memory_end) {
190 printk("initrd extends beyond end of memory "
191 "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
192 initrd_end,memory_end);
193 initrd_start = 0;
194 }
195 }
196 #endif
197
198
199 request_region(0x00,0x20,"dma1");
200 request_region(0x40,0x20,"timer");
201 request_region(0x70,0x10,"rtc");
202 request_region(0x80,0x20,"dma page reg");
203 request_region(0xc0,0x20,"dma2");
204 request_region(0xf0,0x10,"npu");
205 }
206
207 static const char * i486model(unsigned int nr)
208 {
209 static const char *model[] = {
210 "0", "DX","SX","DX/2","4","SX/2","6","DX/2-WB","DX/4","DX/4-WB"
211 };
212 if (nr < sizeof(model)/sizeof(char *))
213 return model[nr];
214 return "Unknown";
215 }
216
217 static const char * i586model(unsigned int nr)
218 {
219 static const char *model[] = {
220 "0", "Pentium 60/66","Pentium 75+","OverDrive PODP5V83"
221 };
222 if (nr < sizeof(model)/sizeof(char *))
223 return model[nr];
224 return "Unknown";
225 }
226
227 static const char * getmodel(int x86, int model)
228 {
229 switch (x86) {
230 case 4:
231 return i486model(model);
232 case 5:
233 return i586model(model);
234 }
235 return "Unknown";
236 }
237
238 int get_cpuinfo(char * buffer)
239 {
240 char mask[2];
241 #ifndef __SMP__
242 mask[0] = x86_mask+'@';
243 mask[1] = '\0';
244 return sprintf(buffer,"cpu\t\t: %c86\n"
245 "model\t\t: %s\n"
246 "mask\t\t: %s\n"
247 "vid\t\t: %s\n"
248 "fdiv_bug\t: %s\n"
249 "math\t\t: %s\n"
250 "hlt\t\t: %s\n"
251 "wp\t\t: %s\n"
252 "Integrated NPU\t: %s\n"
253 "Enhanced VM86\t: %s\n"
254 "IO Breakpoints\t: %s\n"
255 "4MB Pages\t: %s\n"
256 "TS Counters\t: %s\n"
257 "Pentium MSR\t: %s\n"
258 "Mach. Ch. Exep.\t: %s\n"
259 "CMPXCHGB8B\t: %s\n"
260 "BogoMips\t: %lu.%02lu\n",
261 x86+'0',
262 getmodel(x86, x86_model),
263 x86_mask ? mask : "Unknown",
264 x86_vendor_id,
265 fdiv_bug ? "yes" : "no",
266 hard_math ? "yes" : "no",
267 hlt_works_ok ? "yes" : "no",
268 wp_works_ok ? "yes" : "no",
269 x86_capability & 1 ? "yes" : "no",
270 x86_capability & 2 ? "yes" : "no",
271 x86_capability & 4 ? "yes" : "no",
272 x86_capability & 8 ? "yes" : "no",
273 x86_capability & 16 ? "yes" : "no",
274 x86_capability & 32 ? "yes" : "no",
275 x86_capability & 128 ? "yes" : "no",
276 x86_capability & 256 ? "yes" : "no",
277 loops_per_sec/500000, (loops_per_sec/5000) % 100
278 );
279 #else
280 char *bp=buffer;
281 int i;
282 bp+=sprintf(bp,"cpu\t\t: ");
283 for(i=0;i<32;i++)
284 if(cpu_present_map&(1<<i))
285 bp+=sprintf(bp,"%c86 ",cpu_data[i].x86+'0');
286 bp+=sprintf(bp,"\nmodel\t\t: ");
287 for(i=0;i<32;i++)
288 if(cpu_present_map&(1<<i))
289 bp+=sprintf(bp,"%-16s",getmodel(cpu_data[i].x86,cpu_data[i].x86_model));
290 bp+=sprintf(bp,"\nmask\t\t: ");
291 for(i=0;i<32;i++)
292 if(cpu_present_map&(1<<i))
293 {
294 mask[0] = cpu_data[i].x86_mask+'@';
295 mask[1] = '\0';
296 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_mask ? mask : "Unknown");
297 }
298 bp+=sprintf(bp,"\nvid\t\t: ");
299 for(i=0;i<32;i++)
300 if(cpu_present_map&(1<<i))
301 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_vendor_id);
302 bp+=sprintf(bp,"\nfdiv_bug\t: ");
303 for(i=0;i<32;i++)
304 if(cpu_present_map&(1<<i))
305 bp+=sprintf(bp,"%-16s", cpu_data[i].fdiv_bug?"yes":"no");
306 bp+=sprintf(bp,"\nmath\t\t: ");
307 for(i=0;i<32;i++)
308 if(cpu_present_map&(1<<i))
309 bp+=sprintf(bp,"%-16s", cpu_data[i].hard_math?"yes":"no");
310 bp+=sprintf(bp,"\nhlt\t\t: ");
311 for(i=0;i<32;i++)
312 if(cpu_present_map&(1<<i))
313 bp+=sprintf(bp,"%-16s", cpu_data[i].hlt_works_ok?"yes":"no");
314 bp+=sprintf(bp,"\nwp\t\t: ");
315 for(i=0;i<32;i++)
316 if(cpu_present_map&(1<<i))
317 bp+=sprintf(bp,"%-16s", cpu_data[i].wp_works_ok?"yes":"no");
318 bp+=sprintf(bp,"\nIntegrated NPU\t: ");
319 for(i=0;i<32;i++)
320 if(cpu_present_map&(1<<i))
321 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_capability&1?"yes":"no");
322 bp+=sprintf(bp,"\nEnhanced VM86\t: ");
323 for(i=0;i<32;i++)
324 if(cpu_present_map&(1<<i))
325 bp+=sprintf(bp,"%-16s", cpu_data[i].x86_capability&2?"yes":"no");
326 bp+=sprintf(bp,"\nIO Breakpoints\t: ");
327 for(i=0;i<32;i++)
328 if(cpu_present_map&(1<<i))
329 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&4)?"yes":"no");
330 bp+=sprintf(bp,"\n4MB Pages\t: ");
331 for(i=0;i<32;i++)
332 if(cpu_present_map&(1<<i))
333 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability)&8?"yes":"no");
334 bp+=sprintf(bp,"\nTS Counters\t: ");
335 for(i=0;i<32;i++)
336 if(cpu_present_map&(1<<i))
337 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&16)?"yes":"no");
338 bp+=sprintf(bp,"\nPentium MSR\t: ");
339 for(i=0;i<32;i++)
340 if(cpu_present_map&(1<<i))
341 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&32)?"yes":"no");
342 bp+=sprintf(bp,"\nMach. Ch. Exep.\t: ");
343 for(i=0;i<32;i++)
344 if(cpu_present_map&(1<<i))
345 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&128)?"yes":"no");
346 bp+=sprintf(bp,"\nCMPXCHG8B\t: ");
347 for(i=0;i<32;i++)
348 if(cpu_present_map&(1<<i))
349 bp+=sprintf(bp,"%-16s", (cpu_data[i].x86_capability&256)?"yes":"no");
350 bp+=sprintf(bp,"\nBogoMips\t: ");
351 for(i=0;i<32;i++)
352 {
353 char tmp[17];
354 if(cpu_present_map&(1<<i))
355 {
356 sprintf(tmp,"%lu.%02lu",cpu_data[i].udelay_val/500000L,
357 (cpu_data[i].udelay_val/5000L)%100);
358 bp+=sprintf(bp,"%-16s",tmp);
359 }
360 }
361 *bp++='\n';
362 return bp-buffer;
363 #endif
364 }
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