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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/seq_file.h>
24#include <linux/module.h>
25#include <linux/initrd.h>
26
27#include <asm/bootinfo.h>
28#include <asm/setup.h>
29#include <asm/irq.h>
30#include <asm/io.h>
31#include <asm/machdep.h>
32#ifdef CONFIG_AMIGA
33#include <asm/amigahw.h>
34#endif
35#ifdef CONFIG_ATARI
36#include <asm/atarihw.h>
37#include <asm/atari_stram.h>
38#endif
39#ifdef CONFIG_SUN3X
40#include <asm/dvma.h>
41#endif
42
43unsigned long m68k_machtype;
44unsigned long m68k_cputype;
45EXPORT_SYMBOL(m68k_machtype);
46EXPORT_SYMBOL(m68k_cputype);
47unsigned long m68k_fputype;
48unsigned long m68k_mmutype;
49#ifdef CONFIG_VME
50unsigned long vme_brdtype;
51EXPORT_SYMBOL(vme_brdtype);
52#endif
53
54int m68k_is040or060;
55EXPORT_SYMBOL(m68k_is040or060);
56
57extern int end;
58extern unsigned long availmem;
59
60int m68k_num_memory;
61int m68k_realnum_memory;
62EXPORT_SYMBOL(m68k_realnum_memory);
63unsigned long m68k_memoffset;
64EXPORT_SYMBOL(m68k_memoffset);
65struct mem_info m68k_memory[NUM_MEMINFO];
66EXPORT_SYMBOL(m68k_memory);
67
68struct mem_info m68k_ramdisk;
69
70static char m68k_command_line[CL_SIZE];
71
72void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
73
74void (*mach_init_IRQ) (void) __initdata = NULL;
75void (*mach_get_model) (char *model);
76int (*mach_get_hardware_list) (char *buffer);
77
78unsigned long (*mach_gettimeoffset) (void);
79int (*mach_hwclk) (int, struct rtc_time*);
80EXPORT_SYMBOL(mach_hwclk);
81int (*mach_set_clock_mmss) (unsigned long);
82unsigned int (*mach_get_ss)(void);
83int (*mach_get_rtc_pll)(struct rtc_pll_info *);
84int (*mach_set_rtc_pll)(struct rtc_pll_info *);
85EXPORT_SYMBOL(mach_get_ss);
86EXPORT_SYMBOL(mach_get_rtc_pll);
87EXPORT_SYMBOL(mach_set_rtc_pll);
88void (*mach_reset)( void );
89void (*mach_halt)( void );
90void (*mach_power_off)( void );
91long mach_max_dma_address = 0x00ffffff;
92#ifdef CONFIG_HEARTBEAT
93void (*mach_heartbeat) (int);
94EXPORT_SYMBOL(mach_heartbeat);
95#endif
96#ifdef CONFIG_M68K_L2_CACHE
97void (*mach_l2_flush) (int);
98#endif
99#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
100void (*mach_beep)(unsigned int, unsigned int);
101EXPORT_SYMBOL(mach_beep);
102#endif
103#if defined(CONFIG_ISA) && defined(MULTI_ISA)
104int isa_type;
105int isa_sex;
106EXPORT_SYMBOL(isa_type);
107EXPORT_SYMBOL(isa_sex);
108#endif
109
110extern int amiga_parse_bootinfo(const struct bi_record *);
111extern int atari_parse_bootinfo(const struct bi_record *);
112extern int mac_parse_bootinfo(const struct bi_record *);
113extern int q40_parse_bootinfo(const struct bi_record *);
114extern int bvme6000_parse_bootinfo(const struct bi_record *);
115extern int mvme16x_parse_bootinfo(const struct bi_record *);
116extern int mvme147_parse_bootinfo(const struct bi_record *);
117extern int hp300_parse_bootinfo(const struct bi_record *);
118
119extern void config_amiga(void);
120extern void config_atari(void);
121extern void config_mac(void);
122extern void config_sun3(void);
123extern void config_apollo(void);
124extern void config_mvme147(void);
125extern void config_mvme16x(void);
126extern void config_bvme6000(void);
127extern void config_hp300(void);
128extern void config_q40(void);
129extern void config_sun3x(void);
130
131#define MASK_256K 0xfffc0000
132
133extern void paging_init(void);
134
135static void __init m68k_parse_bootinfo(const struct bi_record *record)
136{
137 while (record->tag != BI_LAST) {
138 int unknown = 0;
139 const unsigned long *data = record->data;
140
141 switch (record->tag) {
142 case BI_MACHTYPE:
143 case BI_CPUTYPE:
144 case BI_FPUTYPE:
145 case BI_MMUTYPE:
146
147 break;
148
149 case BI_MEMCHUNK:
150 if (m68k_num_memory < NUM_MEMINFO) {
151 m68k_memory[m68k_num_memory].addr = data[0];
152 m68k_memory[m68k_num_memory].size = data[1];
153 m68k_num_memory++;
154 } else
155 printk("m68k_parse_bootinfo: too many memory chunks\n");
156 break;
157
158 case BI_RAMDISK:
159 m68k_ramdisk.addr = data[0];
160 m68k_ramdisk.size = data[1];
161 break;
162
163 case BI_COMMAND_LINE:
164 strlcpy(m68k_command_line, (const char *)data,
165 sizeof(m68k_command_line));
166 break;
167
168 default:
169 if (MACH_IS_AMIGA)
170 unknown = amiga_parse_bootinfo(record);
171 else if (MACH_IS_ATARI)
172 unknown = atari_parse_bootinfo(record);
173 else if (MACH_IS_MAC)
174 unknown = mac_parse_bootinfo(record);
175 else if (MACH_IS_Q40)
176 unknown = q40_parse_bootinfo(record);
177 else if (MACH_IS_BVME6000)
178 unknown = bvme6000_parse_bootinfo(record);
179 else if (MACH_IS_MVME16x)
180 unknown = mvme16x_parse_bootinfo(record);
181 else if (MACH_IS_MVME147)
182 unknown = mvme147_parse_bootinfo(record);
183 else if (MACH_IS_HP300)
184 unknown = hp300_parse_bootinfo(record);
185 else
186 unknown = 1;
187 }
188 if (unknown)
189 printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
190 record->tag);
191 record = (struct bi_record *)((unsigned long)record +
192 record->size);
193 }
194
195 m68k_realnum_memory = m68k_num_memory;
196#ifdef CONFIG_SINGLE_MEMORY_CHUNK
197 if (m68k_num_memory > 1) {
198 printk("Ignoring last %i chunks of physical memory\n",
199 (m68k_num_memory - 1));
200 m68k_num_memory = 1;
201 }
202 m68k_memoffset = m68k_memory[0].addr-PAGE_OFFSET;
203#endif
204}
205
206void __init setup_arch(char **cmdline_p)
207{
208 extern int _etext, _edata, _end;
209 int i;
210
211
212 m68k_parse_bootinfo((const struct bi_record *)&_end);
213
214 if (CPU_IS_040)
215 m68k_is040or060 = 4;
216 else if (CPU_IS_060)
217 m68k_is040or060 = 6;
218
219
220
221
222
223
224#ifndef CONFIG_M68KFPU_EMU_ONLY
225
226 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
227 volatile int zero = 0;
228 asm volatile ("frestore %0" : : "m" (zero));
229 }
230#endif
231
232 if (CPU_IS_060) {
233 u32 pcr;
234
235 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
236 : "=d" (pcr));
237 if (((pcr >> 8) & 0xff) <= 5) {
238 printk("Enabling workaround for errata I14\n");
239 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
240 : : "d" (pcr | 0x20));
241 }
242 }
243
244 init_mm.start_code = PAGE_OFFSET;
245 init_mm.end_code = (unsigned long) &_etext;
246 init_mm.end_data = (unsigned long) &_edata;
247 init_mm.brk = (unsigned long) &_end;
248
249 *cmdline_p = m68k_command_line;
250 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
251
252 parse_early_param();
253
254#ifdef CONFIG_DUMMY_CONSOLE
255 conswitchp = &dummy_con;
256#endif
257
258 switch (m68k_machtype) {
259#ifdef CONFIG_AMIGA
260 case MACH_AMIGA:
261 config_amiga();
262 break;
263#endif
264#ifdef CONFIG_ATARI
265 case MACH_ATARI:
266 config_atari();
267 break;
268#endif
269#ifdef CONFIG_MAC
270 case MACH_MAC:
271 config_mac();
272 break;
273#endif
274#ifdef CONFIG_SUN3
275 case MACH_SUN3:
276 config_sun3();
277 break;
278#endif
279#ifdef CONFIG_APOLLO
280 case MACH_APOLLO:
281 config_apollo();
282 break;
283#endif
284#ifdef CONFIG_MVME147
285 case MACH_MVME147:
286 config_mvme147();
287 break;
288#endif
289#ifdef CONFIG_MVME16x
290 case MACH_MVME16x:
291 config_mvme16x();
292 break;
293#endif
294#ifdef CONFIG_BVME6000
295 case MACH_BVME6000:
296 config_bvme6000();
297 break;
298#endif
299#ifdef CONFIG_HP300
300 case MACH_HP300:
301 config_hp300();
302 break;
303#endif
304#ifdef CONFIG_Q40
305 case MACH_Q40:
306 config_q40();
307 break;
308#endif
309#ifdef CONFIG_SUN3X
310 case MACH_SUN3X:
311 config_sun3x();
312 break;
313#endif
314 default:
315 panic("No configuration setup");
316 }
317
318 paging_init();
319
320#ifndef CONFIG_SUN3
321 for (i = 1; i < m68k_num_memory; i++)
322 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
323 m68k_memory[i].size);
324#ifdef CONFIG_BLK_DEV_INITRD
325 if (m68k_ramdisk.size) {
326 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
327 m68k_ramdisk.addr, m68k_ramdisk.size);
328 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
329 initrd_end = initrd_start + m68k_ramdisk.size;
330 printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
331 }
332#endif
333
334#ifdef CONFIG_ATARI
335 if (MACH_IS_ATARI)
336 atari_stram_reserve_pages((void *)availmem);
337#endif
338#ifdef CONFIG_SUN3X
339 if (MACH_IS_SUN3X) {
340 dvma_init();
341 }
342#endif
343
344#endif
345
346
347#if defined(CONFIG_ISA) && defined(MULTI_ISA)
348#if defined(CONFIG_Q40)
349 if (MACH_IS_Q40) {
350 isa_type = Q40_ISA;
351 isa_sex = 0;
352 }
353#elif defined(CONFIG_GG2)
354 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)) {
355 isa_type = GG2_ISA;
356 isa_sex = 0;
357 }
358#elif defined(CONFIG_AMIGA_PCMCIA)
359 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
360 isa_type = AG_ISA;
361 isa_sex = 1;
362 }
363#endif
364#endif
365}
366
367static int show_cpuinfo(struct seq_file *m, void *v)
368{
369 const char *cpu, *mmu, *fpu;
370 unsigned long clockfreq, clockfactor;
371
372#define LOOP_CYCLES_68020 (8)
373#define LOOP_CYCLES_68030 (8)
374#define LOOP_CYCLES_68040 (3)
375#define LOOP_CYCLES_68060 (1)
376
377 if (CPU_IS_020) {
378 cpu = "68020";
379 clockfactor = LOOP_CYCLES_68020;
380 } else if (CPU_IS_030) {
381 cpu = "68030";
382 clockfactor = LOOP_CYCLES_68030;
383 } else if (CPU_IS_040) {
384 cpu = "68040";
385 clockfactor = LOOP_CYCLES_68040;
386 } else if (CPU_IS_060) {
387 cpu = "68060";
388 clockfactor = LOOP_CYCLES_68060;
389 } else {
390 cpu = "680x0";
391 clockfactor = 0;
392 }
393
394#ifdef CONFIG_M68KFPU_EMU_ONLY
395 fpu = "none(soft float)";
396#else
397 if (m68k_fputype & FPU_68881)
398 fpu = "68881";
399 else if (m68k_fputype & FPU_68882)
400 fpu = "68882";
401 else if (m68k_fputype & FPU_68040)
402 fpu = "68040";
403 else if (m68k_fputype & FPU_68060)
404 fpu = "68060";
405 else if (m68k_fputype & FPU_SUNFPA)
406 fpu = "Sun FPA";
407 else
408 fpu = "none";
409#endif
410
411 if (m68k_mmutype & MMU_68851)
412 mmu = "68851";
413 else if (m68k_mmutype & MMU_68030)
414 mmu = "68030";
415 else if (m68k_mmutype & MMU_68040)
416 mmu = "68040";
417 else if (m68k_mmutype & MMU_68060)
418 mmu = "68060";
419 else if (m68k_mmutype & MMU_SUN3)
420 mmu = "Sun-3";
421 else if (m68k_mmutype & MMU_APOLLO)
422 mmu = "Apollo";
423 else
424 mmu = "unknown";
425
426 clockfreq = loops_per_jiffy * HZ * clockfactor;
427
428 seq_printf(m, "CPU:\t\t%s\n"
429 "MMU:\t\t%s\n"
430 "FPU:\t\t%s\n"
431 "Clocking:\t%lu.%1luMHz\n"
432 "BogoMips:\t%lu.%02lu\n"
433 "Calibration:\t%lu loops\n",
434 cpu, mmu, fpu,
435 clockfreq/1000000,(clockfreq/100000)%10,
436 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
437 loops_per_jiffy);
438 return 0;
439}
440
441static void *c_start(struct seq_file *m, loff_t *pos)
442{
443 return *pos < 1 ? (void *)1 : NULL;
444}
445static void *c_next(struct seq_file *m, void *v, loff_t *pos)
446{
447 ++*pos;
448 return NULL;
449}
450static void c_stop(struct seq_file *m, void *v)
451{
452}
453struct seq_operations cpuinfo_op = {
454 .start = c_start,
455 .next = c_next,
456 .stop = c_stop,
457 .show = show_cpuinfo,
458};
459
460int get_hardware_list(char *buffer)
461{
462 int len = 0;
463 char model[80];
464 unsigned long mem;
465 int i;
466
467 if (mach_get_model)
468 mach_get_model(model);
469 else
470 strcpy(model, "Unknown m68k");
471
472 len += sprintf(buffer + len, "Model:\t\t%s\n", model);
473 for (mem = 0, i = 0; i < m68k_num_memory; i++)
474 mem += m68k_memory[i].size;
475 len += sprintf(buffer + len, "System Memory:\t%ldK\n", mem >> 10);
476
477 if (mach_get_hardware_list)
478 len += mach_get_hardware_list(buffer + len);
479
480 return len;
481}
482
483void check_bugs(void)
484{
485#ifndef CONFIG_M68KFPU_EMU
486 if (m68k_fputype == 0) {
487 printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
488 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
489 printk(KERN_EMERG "Upgrade your hardware or join the FPU "
490 "emulation project\n");
491 panic("no FPU");
492 }
493#endif
494}
495
496#ifdef CONFIG_ADB
497static int __init adb_probe_sync_enable (char *str) {
498 extern int __adb_probe_sync;
499 __adb_probe_sync = 1;
500 return 1;
501}
502
503__setup("adb_sync", adb_probe_sync_enable);
504#endif
505
