projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
m68k: print memory layout info in boot log
[deliverable/linux.git] / arch / m68k / kernel / setup_mm.c
CommitLineData
66d857b0
GU		 1/*
2 * linux/arch/m68k/kernel/setup.c
3 *
4 * Copyright (C) 1995 Hamish Macdonald
5 */
6
7/*
8 * This file handles the architecture-dependent parts of system setup
9 */
10
11#include <linux/kernel.h>
12#include <linux/mm.h>
13#include <linux/sched.h>
14#include <linux/delay.h>
15#include <linux/interrupt.h>
16#include <linux/fs.h>
17#include <linux/console.h>
18#include <linux/genhd.h>
19#include <linux/errno.h>
20#include <linux/string.h>
21#include <linux/init.h>
22#include <linux/bootmem.h>
23#include <linux/proc_fs.h>
24#include <linux/seq_file.h>
25#include <linux/module.h>
26#include <linux/initrd.h>
27
28#include <asm/bootinfo.h>
29#include <asm/sections.h>
30#include <asm/setup.h>
31#include <asm/fpu.h>
32#include <asm/irq.h>
33#include <asm/io.h>
34#include <asm/machdep.h>
35#ifdef CONFIG_AMIGA
36#include <asm/amigahw.h>
37#endif
38#ifdef CONFIG_ATARI
39#include <asm/atarihw.h>
40#include <asm/atari_stram.h>
41#endif
42#ifdef CONFIG_SUN3X
43#include <asm/dvma.h>
44#endif
45#include <asm/natfeat.h>
46
47#if !FPSTATESIZE || !NR_IRQS
48#warning No CPU/platform type selected, your kernel will not work!
49#warning Are you building an allnoconfig kernel?
50#endif
51
52unsigned long m68k_machtype;
53EXPORT_SYMBOL(m68k_machtype);
54unsigned long m68k_cputype;
55EXPORT_SYMBOL(m68k_cputype);
56unsigned long m68k_fputype;
57unsigned long m68k_mmutype;
58EXPORT_SYMBOL(m68k_mmutype);
59#ifdef CONFIG_VME
60unsigned long vme_brdtype;
61EXPORT_SYMBOL(vme_brdtype);
62#endif
63
64int m68k_is040or060;
65EXPORT_SYMBOL(m68k_is040or060);
66
67extern unsigned long availmem;
68
69int m68k_num_memory;
70EXPORT_SYMBOL(m68k_num_memory);
71int m68k_realnum_memory;
72EXPORT_SYMBOL(m68k_realnum_memory);
73unsigned long m68k_memoffset;
74struct mem_info m68k_memory[NUM_MEMINFO];
75EXPORT_SYMBOL(m68k_memory);
76
77struct mem_info m68k_ramdisk;
78
79static char m68k_command_line[CL_SIZE];
80
81void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
82/* machine dependent irq functions */
83void (*mach_init_IRQ) (void) __initdata = NULL;
84void (*mach_get_model) (char *model);
85void (*mach_get_hardware_list) (struct seq_file *m);
86/* machine dependent timer functions */
87unsigned long (*mach_gettimeoffset) (void);
88int (*mach_hwclk) (int, struct rtc_time*);
89EXPORT_SYMBOL(mach_hwclk);
90int (*mach_set_clock_mmss) (unsigned long);
91unsigned int (*mach_get_ss)(void);
92int (*mach_get_rtc_pll)(struct rtc_pll_info *);
93int (*mach_set_rtc_pll)(struct rtc_pll_info *);
94EXPORT_SYMBOL(mach_get_ss);
95EXPORT_SYMBOL(mach_get_rtc_pll);
96EXPORT_SYMBOL(mach_set_rtc_pll);
97void (*mach_reset)( void );
98void (*mach_halt)( void );
99void (*mach_power_off)( void );
100long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
101#ifdef CONFIG_HEARTBEAT
102void (*mach_heartbeat) (int);
103EXPORT_SYMBOL(mach_heartbeat);
104#endif
105#ifdef CONFIG_M68K_L2_CACHE
106void (*mach_l2_flush) (int);
107#endif
108#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
109void (*mach_beep)(unsigned int, unsigned int);
110EXPORT_SYMBOL(mach_beep);
111#endif
112#if defined(CONFIG_ISA) && defined(MULTI_ISA)
113int isa_type;
114int isa_sex;
115EXPORT_SYMBOL(isa_type);
116EXPORT_SYMBOL(isa_sex);
117#endif
118
119extern int amiga_parse_bootinfo(const struct bi_record *);
120extern int atari_parse_bootinfo(const struct bi_record *);
121extern int mac_parse_bootinfo(const struct bi_record *);
122extern int q40_parse_bootinfo(const struct bi_record *);
123extern int bvme6000_parse_bootinfo(const struct bi_record *);
124extern int mvme16x_parse_bootinfo(const struct bi_record *);
125extern int mvme147_parse_bootinfo(const struct bi_record *);
126extern int hp300_parse_bootinfo(const struct bi_record *);
127extern int apollo_parse_bootinfo(const struct bi_record *);
128
129extern void config_amiga(void);
130extern void config_atari(void);
131extern void config_mac(void);
132extern void config_sun3(void);
133extern void config_apollo(void);
134extern void config_mvme147(void);
135extern void config_mvme16x(void);
136extern void config_bvme6000(void);
137extern void config_hp300(void);
138extern void config_q40(void);
139extern void config_sun3x(void);
140
141#define MASK_256K 0xfffc0000
142
143extern void paging_init(void);
144
145static void __init m68k_parse_bootinfo(const struct bi_record *record)
146{
147 while (record->tag != BI_LAST) {
148 int unknown = 0;
149 const unsigned long *data = record->data;
150
151 switch (record->tag) {
152 case BI_MACHTYPE:
153 case BI_CPUTYPE:
154 case BI_FPUTYPE:
155 case BI_MMUTYPE:
156 /* Already set up by head.S */
157 break;
158
159 case BI_MEMCHUNK:
160 if (m68k_num_memory < NUM_MEMINFO) {
161 m68k_memory[m68k_num_memory].addr = data[0];
162 m68k_memory[m68k_num_memory].size = data[1];
163 m68k_num_memory++;
164 } else
165 printk("m68k_parse_bootinfo: too many memory chunks\n");
166 break;
167
168 case BI_RAMDISK:
169 m68k_ramdisk.addr = data[0];
170 m68k_ramdisk.size = data[1];
171 break;
172
173 case BI_COMMAND_LINE:
174 strlcpy(m68k_command_line, (const char *)data,
175 sizeof(m68k_command_line));
176 break;
177
178 default:
179 if (MACH_IS_AMIGA)
180 unknown = amiga_parse_bootinfo(record);
181 else if (MACH_IS_ATARI)
182 unknown = atari_parse_bootinfo(record);
183 else if (MACH_IS_MAC)
184 unknown = mac_parse_bootinfo(record);
185 else if (MACH_IS_Q40)
186 unknown = q40_parse_bootinfo(record);
187 else if (MACH_IS_BVME6000)
188 unknown = bvme6000_parse_bootinfo(record);
189 else if (MACH_IS_MVME16x)
190 unknown = mvme16x_parse_bootinfo(record);
191 else if (MACH_IS_MVME147)
192 unknown = mvme147_parse_bootinfo(record);
193 else if (MACH_IS_HP300)
194 unknown = hp300_parse_bootinfo(record);
195 else if (MACH_IS_APOLLO)
196 unknown = apollo_parse_bootinfo(record);
197 else
198 unknown = 1;
199 }
200 if (unknown)
201 printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
202 record->tag);
203 record = (struct bi_record *)((unsigned long)record +
204 record->size);
205 }
206
207 m68k_realnum_memory = m68k_num_memory;
208#ifdef CONFIG_SINGLE_MEMORY_CHUNK
209 if (m68k_num_memory > 1) {
210 printk("Ignoring last %i chunks of physical memory\n",
211 (m68k_num_memory - 1));
212 m68k_num_memory = 1;
213 }
214#endif
215}
216
217void __init setup_arch(char **cmdline_p)
218{
b2cb9241 219#ifndef CONFIG_SUN3
66d857b0 220 int i;
b2cb9241 221#endif
66d857b0
GU		 222
223 /* The bootinfo is located right after the kernel bss */
224 m68k_parse_bootinfo((const struct bi_record *)_end);
225
226 if (CPU_IS_040)
227 m68k_is040or060 = 4;
228 else if (CPU_IS_060)
229 m68k_is040or060 = 6;
230
231 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
232 * be confused by software FPU emulation. BEWARE.
233 * We should really do our own FPU check at startup.
234 * [what do we do with buggy 68LC040s? if we have problems
235 * with them, we should add a test to check_bugs() below] */
236#ifndef CONFIG_M68KFPU_EMU_ONLY
237 /* clear the fpu if we have one */
238 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
239 volatile int zero = 0;
240 asm volatile ("frestore %0" : : "m" (zero));
241 }
242#endif
243
244 if (CPU_IS_060) {
245 u32 pcr;
246
247 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
248 : "=d" (pcr));
249 if (((pcr >> 8) & 0xff) <= 5) {
250 printk("Enabling workaround for errata I14\n");
251 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
252 : : "d" (pcr | 0x20));
253 }
254 }
255
256 init_mm.start_code = PAGE_OFFSET;
257 init_mm.end_code = (unsigned long)_etext;
258 init_mm.end_data = (unsigned long)_edata;
259 init_mm.brk = (unsigned long)_end;
260
261 *cmdline_p = m68k_command_line;
262 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
263
264 parse_early_param();
265
266#ifdef CONFIG_DUMMY_CONSOLE
267 conswitchp = &dummy_con;
268#endif
269
270 switch (m68k_machtype) {
271#ifdef CONFIG_AMIGA
272 case MACH_AMIGA:
273 config_amiga();
274 break;
275#endif
276#ifdef CONFIG_ATARI
277 case MACH_ATARI:
278 config_atari();
279 break;
280#endif
281#ifdef CONFIG_MAC
282 case MACH_MAC:
283 config_mac();
284 break;
285#endif
286#ifdef CONFIG_SUN3
287 case MACH_SUN3:
288 config_sun3();
289 break;
290#endif
291#ifdef CONFIG_APOLLO
292 case MACH_APOLLO:
293 config_apollo();
294 break;
295#endif
296#ifdef CONFIG_MVME147
297 case MACH_MVME147:
298 config_mvme147();
299 break;
300#endif
301#ifdef CONFIG_MVME16x
302 case MACH_MVME16x:
303 config_mvme16x();
304 break;
305#endif
306#ifdef CONFIG_BVME6000
307 case MACH_BVME6000:
308 config_bvme6000();
309 break;
310#endif
311#ifdef CONFIG_HP300
312 case MACH_HP300:
313 config_hp300();
314 break;
315#endif
316#ifdef CONFIG_Q40
317 case MACH_Q40:
318 config_q40();
319 break;
320#endif
321#ifdef CONFIG_SUN3X
322 case MACH_SUN3X:
323 config_sun3x();
324 break;
325#endif
326 default:
327 panic("No configuration setup");
328 }
329
330#ifdef CONFIG_NATFEAT
331 nf_init();
332#endif
333
334 paging_init();
335
336#ifndef CONFIG_SUN3
337 for (i = 1; i < m68k_num_memory; i++)
338 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
339 m68k_memory[i].size);
340#ifdef CONFIG_BLK_DEV_INITRD
341 if (m68k_ramdisk.size) {
342 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
343 m68k_ramdisk.addr, m68k_ramdisk.size,
344 BOOTMEM_DEFAULT);
345 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
346 initrd_end = initrd_start + m68k_ramdisk.size;
347 printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
348 }
349#endif
350
351#ifdef CONFIG_ATARI
352 if (MACH_IS_ATARI)
353 atari_stram_reserve_pages((void *)availmem);
354#endif
355#ifdef CONFIG_SUN3X
356 if (MACH_IS_SUN3X) {
357 dvma_init();
358 }
359#endif
360
361#endif /* !CONFIG_SUN3 */
362
363/* set ISA defs early as possible */
364#if defined(CONFIG_ISA) && defined(MULTI_ISA)
365 if (MACH_IS_Q40) {
366 isa_type = ISA_TYPE_Q40;
367 isa_sex = 0;
368 }
369#ifdef CONFIG_AMIGA_PCMCIA
370 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
371 isa_type = ISA_TYPE_AG;
372 isa_sex = 1;
373 }
374#endif
375#endif
376}
377
378static int show_cpuinfo(struct seq_file *m, void *v)
379{
380 const char *cpu, *mmu, *fpu;
381 unsigned long clockfreq, clockfactor;
382
383#define LOOP_CYCLES_68020 (8)
384#define LOOP_CYCLES_68030 (8)
385#define LOOP_CYCLES_68040 (3)
386#define LOOP_CYCLES_68060 (1)
387
388 if (CPU_IS_020) {
389 cpu = "68020";
390 clockfactor = LOOP_CYCLES_68020;
391 } else if (CPU_IS_030) {
392 cpu = "68030";
393 clockfactor = LOOP_CYCLES_68030;
394 } else if (CPU_IS_040) {
395 cpu = "68040";
396 clockfactor = LOOP_CYCLES_68040;
397 } else if (CPU_IS_060) {
398 cpu = "68060";
399 clockfactor = LOOP_CYCLES_68060;
400 } else {
401 cpu = "680x0";
402 clockfactor = 0;
403 }
404
405#ifdef CONFIG_M68KFPU_EMU_ONLY
406 fpu = "none(soft float)";
407#else
408 if (m68k_fputype & FPU_68881)
409 fpu = "68881";
410 else if (m68k_fputype & FPU_68882)
411 fpu = "68882";
412 else if (m68k_fputype & FPU_68040)
413 fpu = "68040";
414 else if (m68k_fputype & FPU_68060)
415 fpu = "68060";
416 else if (m68k_fputype & FPU_SUNFPA)
417 fpu = "Sun FPA";
418 else
419 fpu = "none";
420#endif
421
422 if (m68k_mmutype & MMU_68851)
423 mmu = "68851";
424 else if (m68k_mmutype & MMU_68030)
425 mmu = "68030";
426 else if (m68k_mmutype & MMU_68040)
427 mmu = "68040";
428 else if (m68k_mmutype & MMU_68060)
429 mmu = "68060";
430 else if (m68k_mmutype & MMU_SUN3)
431 mmu = "Sun-3";
432 else if (m68k_mmutype & MMU_APOLLO)
433 mmu = "Apollo";
434 else
435 mmu = "unknown";
436
437 clockfreq = loops_per_jiffy * HZ * clockfactor;
438
439 seq_printf(m, "CPU:\t\t%s\n"
440 "MMU:\t\t%s\n"
441 "FPU:\t\t%s\n"
442 "Clocking:\t%lu.%1luMHz\n"
443 "BogoMips:\t%lu.%02lu\n"
444 "Calibration:\t%lu loops\n",
445 cpu, mmu, fpu,
446 clockfreq/1000000,(clockfreq/100000)%10,
447 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
448 loops_per_jiffy);
449 return 0;
450}
451
452static void *c_start(struct seq_file *m, loff_t *pos)
453{
454 return *pos < 1 ? (void *)1 : NULL;
455}
456static void *c_next(struct seq_file *m, void *v, loff_t *pos)
457{
458 ++*pos;
459 return NULL;
460}
461static void c_stop(struct seq_file *m, void *v)
462{
463}
464const struct seq_operations cpuinfo_op = {
465 .start = c_start,
466 .next = c_next,
467 .stop = c_stop,
468 .show = show_cpuinfo,
469};
470
471#ifdef CONFIG_PROC_HARDWARE
472static int hardware_proc_show(struct seq_file *m, void *v)
473{
474 char model[80];
475 unsigned long mem;
476 int i;
477
478 if (mach_get_model)
479 mach_get_model(model);
480 else
481 strcpy(model, "Unknown m68k");
482
483 seq_printf(m, "Model:\t\t%s\n", model);
484 for (mem = 0, i = 0; i < m68k_num_memory; i++)
485 mem += m68k_memory[i].size;
486 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
487
488 if (mach_get_hardware_list)
489 mach_get_hardware_list(m);
490
491 return 0;
492}
493
494static int hardware_proc_open(struct inode *inode, struct file *file)
495{
496 return single_open(file, hardware_proc_show, NULL);
497}
498
499static const struct file_operations hardware_proc_fops = {
500 .open = hardware_proc_open,
501 .read = seq_read,
502 .llseek = seq_lseek,
503 .release = single_release,
504};
505
506static int __init proc_hardware_init(void)
507{
508 proc_create("hardware", 0, NULL, &hardware_proc_fops);
509 return 0;
510}
511module_init(proc_hardware_init);
512#endif
513
514void check_bugs(void)
515{
516#ifndef CONFIG_M68KFPU_EMU
517 if (m68k_fputype == 0) {
518 printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
519 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
520 printk(KERN_EMERG "Upgrade your hardware or join the FPU "
521 "emulation project\n");
522 panic("no FPU");
523 }
524#endif /* !CONFIG_M68KFPU_EMU */
525}
526
527#ifdef CONFIG_ADB
528static int __init adb_probe_sync_enable (char *str) {
529 extern int __adb_probe_sync;
530 __adb_probe_sync = 1;
531 return 1;
532}
533
534__setup("adb_sync", adb_probe_sync_enable);
535#endif /* CONFIG_ADB */
Linux kernel - Deliverables
This page took 0.083091 seconds and 5 git commands to generate.