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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
46#if !FPSTATESIZE || !NR_IRQS
47#warning No CPU/platform type selected, your kernel will not work!
48#warning Are you building an allnoconfig kernel?
49#endif
50
51unsigned long m68k_machtype;
52EXPORT_SYMBOL(m68k_machtype);
53unsigned long m68k_cputype;
54EXPORT_SYMBOL(m68k_cputype);
55unsigned long m68k_fputype;
56unsigned long m68k_mmutype;
57EXPORT_SYMBOL(m68k_mmutype);
58#ifdef CONFIG_VME
59unsigned long vme_brdtype;
60EXPORT_SYMBOL(vme_brdtype);
61#endif
62
63int m68k_is040or060;
64EXPORT_SYMBOL(m68k_is040or060);
65
66extern unsigned long availmem;
67
68int m68k_num_memory;
69EXPORT_SYMBOL(m68k_num_memory);
70int m68k_realnum_memory;
71EXPORT_SYMBOL(m68k_realnum_memory);
72unsigned long m68k_memoffset;
73struct mem_info m68k_memory[NUM_MEMINFO];
74EXPORT_SYMBOL(m68k_memory);
75
76struct mem_info m68k_ramdisk;
77
78static char m68k_command_line[CL_SIZE];
79
80void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
81
82void (*mach_init_IRQ) (void) __initdata = NULL;
83void (*mach_get_model) (char *model);
84void (*mach_get_hardware_list) (struct seq_file *m);
85
86unsigned long (*mach_gettimeoffset) (void);
87int (*mach_hwclk) (int, struct rtc_time*);
88EXPORT_SYMBOL(mach_hwclk);
89int (*mach_set_clock_mmss) (unsigned long);
90unsigned int (*mach_get_ss)(void);
91int (*mach_get_rtc_pll)(struct rtc_pll_info *);
92int (*mach_set_rtc_pll)(struct rtc_pll_info *);
93EXPORT_SYMBOL(mach_get_ss);
94EXPORT_SYMBOL(mach_get_rtc_pll);
95EXPORT_SYMBOL(mach_set_rtc_pll);
96void (*mach_reset)( void );
97void (*mach_halt)( void );
98void (*mach_power_off)( void );
99long mach_max_dma_address = 0x00ffffff;
100#ifdef CONFIG_HEARTBEAT
101void (*mach_heartbeat) (int);
102EXPORT_SYMBOL(mach_heartbeat);
103#endif
104#ifdef CONFIG_M68K_L2_CACHE
105void (*mach_l2_flush) (int);
106#endif
107#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
108void (*mach_beep)(unsigned int, unsigned int);
109EXPORT_SYMBOL(mach_beep);
110#endif
111#if defined(CONFIG_ISA) && defined(MULTI_ISA)
112int isa_type;
113int isa_sex;
114EXPORT_SYMBOL(isa_type);
115EXPORT_SYMBOL(isa_sex);
116#endif
117
118extern int amiga_parse_bootinfo(const struct bi_record *);
119extern int atari_parse_bootinfo(const struct bi_record *);
120extern int mac_parse_bootinfo(const struct bi_record *);
121extern int q40_parse_bootinfo(const struct bi_record *);
122extern int bvme6000_parse_bootinfo(const struct bi_record *);
123extern int mvme16x_parse_bootinfo(const struct bi_record *);
124extern int mvme147_parse_bootinfo(const struct bi_record *);
125extern int hp300_parse_bootinfo(const struct bi_record *);
126extern int apollo_parse_bootinfo(const struct bi_record *);
127
128extern void config_amiga(void);
129extern void config_atari(void);
130extern void config_mac(void);
131extern void config_sun3(void);
132extern void config_apollo(void);
133extern void config_mvme147(void);
134extern void config_mvme16x(void);
135extern void config_bvme6000(void);
136extern void config_hp300(void);
137extern void config_q40(void);
138extern void config_sun3x(void);
139
140#define MASK_256K 0xfffc0000
141
142extern void paging_init(void);
143
144static void __init m68k_parse_bootinfo(const struct bi_record *record)
145{
146 while (record->tag != BI_LAST) {
147 int unknown = 0;
148 const unsigned long *data = record->data;
149
150 switch (record->tag) {
151 case BI_MACHTYPE:
152 case BI_CPUTYPE:
153 case BI_FPUTYPE:
154 case BI_MMUTYPE:
155
156 break;
157
158 case BI_MEMCHUNK:
159 if (m68k_num_memory < NUM_MEMINFO) {
160 m68k_memory[m68k_num_memory].addr = data[0];
161 m68k_memory[m68k_num_memory].size = data[1];
162 m68k_num_memory++;
163 } else
164 printk("m68k_parse_bootinfo: too many memory chunks\n");
165 break;
166
167 case BI_RAMDISK:
168 m68k_ramdisk.addr = data[0];
169 m68k_ramdisk.size = data[1];
170 break;
171
172 case BI_COMMAND_LINE:
173 strlcpy(m68k_command_line, (const char *)data,
174 sizeof(m68k_command_line));
175 break;
176
177 default:
178 if (MACH_IS_AMIGA)
179 unknown = amiga_parse_bootinfo(record);
180 else if (MACH_IS_ATARI)
181 unknown = atari_parse_bootinfo(record);
182 else if (MACH_IS_MAC)
183 unknown = mac_parse_bootinfo(record);
184 else if (MACH_IS_Q40)
185 unknown = q40_parse_bootinfo(record);
186 else if (MACH_IS_BVME6000)
187 unknown = bvme6000_parse_bootinfo(record);
188 else if (MACH_IS_MVME16x)
189 unknown = mvme16x_parse_bootinfo(record);
190 else if (MACH_IS_MVME147)
191 unknown = mvme147_parse_bootinfo(record);
192 else if (MACH_IS_HP300)
193 unknown = hp300_parse_bootinfo(record);
194 else if (MACH_IS_APOLLO)
195 unknown = apollo_parse_bootinfo(record);
196 else
197 unknown = 1;
198 }
199 if (unknown)
200 printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
201 record->tag);
202 record = (struct bi_record *)((unsigned long)record +
203 record->size);
204 }
205
206 m68k_realnum_memory = m68k_num_memory;
207#ifdef CONFIG_SINGLE_MEMORY_CHUNK
208 if (m68k_num_memory > 1) {
209 printk("Ignoring last %i chunks of physical memory\n",
210 (m68k_num_memory - 1));
211 m68k_num_memory = 1;
212 }
213#endif
214}
215
216void __init setup_arch(char **cmdline_p)
217{
218 int i;
219
220
221 m68k_parse_bootinfo((const struct bi_record *)_end);
222
223 if (CPU_IS_040)
224 m68k_is040or060 = 4;
225 else if (CPU_IS_060)
226 m68k_is040or060 = 6;
227
228
229
230
231
232
233#ifndef CONFIG_M68KFPU_EMU_ONLY
234
235 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
236 volatile int zero = 0;
237 asm volatile ("frestore %0" : : "m" (zero));
238 }
239#endif
240
241 if (CPU_IS_060) {
242 u32 pcr;
243
244 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
245 : "=d" (pcr));
246 if (((pcr >> 8) & 0xff) <= 5) {
247 printk("Enabling workaround for errata I14\n");
248 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
249 : : "d" (pcr | 0x20));
250 }
251 }
252
253 init_mm.start_code = PAGE_OFFSET;
254 init_mm.end_code = (unsigned long)_etext;
255 init_mm.end_data = (unsigned long)_edata;
256 init_mm.brk = (unsigned long)_end;
257
258 *cmdline_p = m68k_command_line;
259 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
260
261 parse_early_param();
262
263#ifdef CONFIG_DUMMY_CONSOLE
264 conswitchp = &dummy_con;
265#endif
266
267 switch (m68k_machtype) {
268#ifdef CONFIG_AMIGA
269 case MACH_AMIGA:
270 config_amiga();
271 break;
272#endif
273#ifdef CONFIG_ATARI
274 case MACH_ATARI:
275 config_atari();
276 break;
277#endif
278#ifdef CONFIG_MAC
279 case MACH_MAC:
280 config_mac();
281 break;
282#endif
283#ifdef CONFIG_SUN3
284 case MACH_SUN3:
285 config_sun3();
286 break;
287#endif
288#ifdef CONFIG_APOLLO
289 case MACH_APOLLO:
290 config_apollo();
291 break;
292#endif
293#ifdef CONFIG_MVME147
294 case MACH_MVME147:
295 config_mvme147();
296 break;
297#endif
298#ifdef CONFIG_MVME16x
299 case MACH_MVME16x:
300 config_mvme16x();
301 break;
302#endif
303#ifdef CONFIG_BVME6000
304 case MACH_BVME6000:
305 config_bvme6000();
306 break;
307#endif
308#ifdef CONFIG_HP300
309 case MACH_HP300:
310 config_hp300();
311 break;
312#endif
313#ifdef CONFIG_Q40
314 case MACH_Q40:
315 config_q40();
316 break;
317#endif
318#ifdef CONFIG_SUN3X
319 case MACH_SUN3X:
320 config_sun3x();
321 break;
322#endif
323 default:
324 panic("No configuration setup");
325 }
326
327 paging_init();
328
329#ifndef CONFIG_SUN3
330 for (i = 1; i < m68k_num_memory; i++)
331 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
332 m68k_memory[i].size);
333#ifdef CONFIG_BLK_DEV_INITRD
334 if (m68k_ramdisk.size) {
335 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
336 m68k_ramdisk.addr, m68k_ramdisk.size,
337 BOOTMEM_DEFAULT);
338 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
339 initrd_end = initrd_start + m68k_ramdisk.size;
340 printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
341 }
342#endif
343
344#ifdef CONFIG_ATARI
345 if (MACH_IS_ATARI)
346 atari_stram_reserve_pages((void *)availmem);
347#endif
348#ifdef CONFIG_SUN3X
349 if (MACH_IS_SUN3X) {
350 dvma_init();
351 }
352#endif
353
354#endif
355
356
357#if defined(CONFIG_ISA) && defined(MULTI_ISA)
358 if (MACH_IS_Q40) {
359 isa_type = ISA_TYPE_Q40;
360 isa_sex = 0;
361 }
362#ifdef CONFIG_GG2
363 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)) {
364 isa_type = ISA_TYPE_GG2;
365 isa_sex = 0;
366 }
367#endif
368#ifdef CONFIG_AMIGA_PCMCIA
369 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
370 isa_type = ISA_TYPE_AG;
371 isa_sex = 1;
372 }
373#endif
374#endif
375}
376
377static int show_cpuinfo(struct seq_file *m, void *v)
378{
379 const char *cpu, *mmu, *fpu;
380 unsigned long clockfreq, clockfactor;
381
382#define LOOP_CYCLES_68020 (8)
383#define LOOP_CYCLES_68030 (8)
384#define LOOP_CYCLES_68040 (3)
385#define LOOP_CYCLES_68060 (1)
386
387 if (CPU_IS_020) {
388 cpu = "68020";
389 clockfactor = LOOP_CYCLES_68020;
390 } else if (CPU_IS_030) {
391 cpu = "68030";
392 clockfactor = LOOP_CYCLES_68030;
393 } else if (CPU_IS_040) {
394 cpu = "68040";
395 clockfactor = LOOP_CYCLES_68040;
396 } else if (CPU_IS_060) {
397 cpu = "68060";
398 clockfactor = LOOP_CYCLES_68060;
399 } else {
400 cpu = "680x0";
401 clockfactor = 0;
402 }
403
404#ifdef CONFIG_M68KFPU_EMU_ONLY
405 fpu = "none(soft float)";
406#else
407 if (m68k_fputype & FPU_68881)
408 fpu = "68881";
409 else if (m68k_fputype & FPU_68882)
410 fpu = "68882";
411 else if (m68k_fputype & FPU_68040)
412 fpu = "68040";
413 else if (m68k_fputype & FPU_68060)
414 fpu = "68060";
415 else if (m68k_fputype & FPU_SUNFPA)
416 fpu = "Sun FPA";
417 else
418 fpu = "none";
419#endif
420
421 if (m68k_mmutype & MMU_68851)
422 mmu = "68851";
423 else if (m68k_mmutype & MMU_68030)
424 mmu = "68030";
425 else if (m68k_mmutype & MMU_68040)
426 mmu = "68040";
427 else if (m68k_mmutype & MMU_68060)
428 mmu = "68060";
429 else if (m68k_mmutype & MMU_SUN3)
430 mmu = "Sun-3";
431 else if (m68k_mmutype & MMU_APOLLO)
432 mmu = "Apollo";
433 else
434 mmu = "unknown";
435
436 clockfreq = loops_per_jiffy * HZ * clockfactor;
437
438 seq_printf(m, "CPU:\t\t%s\n"
439 "MMU:\t\t%s\n"
440 "FPU:\t\t%s\n"
441 "Clocking:\t%lu.%1luMHz\n"
442 "BogoMips:\t%lu.%02lu\n"
443 "Calibration:\t%lu loops\n",
444 cpu, mmu, fpu,
445 clockfreq/1000000,(clockfreq/100000)%10,
446 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
447 loops_per_jiffy);
448 return 0;
449}
450
451static void *c_start(struct seq_file *m, loff_t *pos)
452{
453 return *pos < 1 ? (void *)1 : NULL;
454}
455static void *c_next(struct seq_file *m, void *v, loff_t *pos)
456{
457 ++*pos;
458 return NULL;
459}
460static void c_stop(struct seq_file *m, void *v)
461{
462}
463const struct seq_operations cpuinfo_op = {
464 .start = c_start,
465 .next = c_next,
466 .stop = c_stop,
467 .show = show_cpuinfo,
468};
469
470#ifdef CONFIG_PROC_HARDWARE
471static int hardware_proc_show(struct seq_file *m, void *v)
472{
473 char model[80];
474 unsigned long mem;
475 int i;
476
477 if (mach_get_model)
478 mach_get_model(model);
479 else
480 strcpy(model, "Unknown m68k");
481
482 seq_printf(m, "Model:\t\t%s\n", model);
483 for (mem = 0, i = 0; i < m68k_num_memory; i++)
484 mem += m68k_memory[i].size;
485 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
486
487 if (mach_get_hardware_list)
488 mach_get_hardware_list(m);
489
490 return 0;
491}
492
493static int hardware_proc_open(struct inode *inode, struct file *file)
494{
495 return single_open(file, hardware_proc_show, NULL);
496}
497
498static const struct file_operations hardware_proc_fops = {
499 .open = hardware_proc_open,
500 .read = seq_read,
501 .llseek = seq_lseek,
502 .release = single_release,
503};
504
505static int __init proc_hardware_init(void)
506{
507 proc_create("hardware", 0, NULL, &hardware_proc_fops);
508 return 0;
509}
510module_init(proc_hardware_init);
511#endif
512
513void check_bugs(void)
514{
515#ifndef CONFIG_M68KFPU_EMU
516 if (m68k_fputype == 0) {
517 printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
518 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
519 printk(KERN_EMERG "Upgrade your hardware or join the FPU "
520 "emulation project\n");
521 panic("no FPU");
522 }
523#endif
524}
525
526#ifdef CONFIG_ADB
527static int __init adb_probe_sync_enable (char *str) {
528 extern int __adb_probe_sync;
529 __adb_probe_sync = 1;
530 return 1;
531}
532
533__setup("adb_sync", adb_probe_sync_enable);
534#endif
535
