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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/m68k/kernel/setup.c
4 *
5 * Copyright (C) 1995 Hamish Macdonald
6 */
7
8/*
9 * This file handles the architecture-dependent parts of system setup
10 */
11
12#include <linux/kernel.h>
13#include <linux/mm.h>
14#include <linux/sched.h>
15#include <linux/delay.h>
16#include <linux/interrupt.h>
17#include <linux/fs.h>
18#include <linux/console.h>
19#include <linux/genhd.h>
20#include <linux/errno.h>
21#include <linux/string.h>
22#include <linux/init.h>
23#include <linux/memblock.h>
24#include <linux/proc_fs.h>
25#include <linux/seq_file.h>
26#include <linux/module.h>
27#include <linux/nvram.h>
28#include <linux/initrd.h>
29
30#include <asm/bootinfo.h>
31#include <asm/byteorder.h>
32#include <asm/sections.h>
33#include <asm/setup.h>
34#include <asm/fpu.h>
35#include <asm/irq.h>
36#include <asm/io.h>
37#include <asm/machdep.h>
38#ifdef CONFIG_AMIGA
39#include <asm/amigahw.h>
40#endif
41#include <asm/atarihw.h>
42#ifdef CONFIG_ATARI
43#include <asm/atari_stram.h>
44#endif
45#ifdef CONFIG_SUN3X
46#include <asm/dvma.h>
47#endif
48#include <asm/macintosh.h>
49#include <asm/natfeat.h>
50
51#if !FPSTATESIZE || !NR_IRQS
52#warning No CPU/platform type selected, your kernel will not work!
53#warning Are you building an allnoconfig kernel?
54#endif
55
56unsigned long m68k_machtype;
57EXPORT_SYMBOL(m68k_machtype);
58unsigned long m68k_cputype;
59EXPORT_SYMBOL(m68k_cputype);
60unsigned long m68k_fputype;
61unsigned long m68k_mmutype;
62EXPORT_SYMBOL(m68k_mmutype);
63#ifdef CONFIG_VME
64unsigned long vme_brdtype;
65EXPORT_SYMBOL(vme_brdtype);
66#endif
67
68int m68k_is040or060;
69EXPORT_SYMBOL(m68k_is040or060);
70
71extern unsigned long availmem;
72
73int m68k_num_memory;
74EXPORT_SYMBOL(m68k_num_memory);
75int m68k_realnum_memory;
76EXPORT_SYMBOL(m68k_realnum_memory);
77unsigned long m68k_memoffset;
78struct m68k_mem_info m68k_memory[NUM_MEMINFO];
79EXPORT_SYMBOL(m68k_memory);
80
81static struct m68k_mem_info m68k_ramdisk __initdata;
82
83static char m68k_command_line[CL_SIZE] __initdata;
84
85void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
86/* machine dependent irq functions */
87void (*mach_init_IRQ) (void) __initdata = NULL;
88void (*mach_get_model) (char *model);
89void (*mach_get_hardware_list) (struct seq_file *m);
90/* machine dependent timer functions */
91int (*mach_hwclk) (int, struct rtc_time*);
92EXPORT_SYMBOL(mach_hwclk);
93unsigned int (*mach_get_ss)(void);
94int (*mach_get_rtc_pll)(struct rtc_pll_info *);
95int (*mach_set_rtc_pll)(struct rtc_pll_info *);
96EXPORT_SYMBOL(mach_get_ss);
97EXPORT_SYMBOL(mach_get_rtc_pll);
98EXPORT_SYMBOL(mach_set_rtc_pll);
99void (*mach_reset)( void );
100void (*mach_halt)( void );
101void (*mach_power_off)( void );
102long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
103#ifdef CONFIG_HEARTBEAT
104void (*mach_heartbeat) (int);
105EXPORT_SYMBOL(mach_heartbeat);
106#endif
107#ifdef CONFIG_M68K_L2_CACHE
108void (*mach_l2_flush) (int);
109#endif
110#if defined(CONFIG_ISA) && defined(MULTI_ISA)
111int isa_type;
112int isa_sex;
113EXPORT_SYMBOL(isa_type);
114EXPORT_SYMBOL(isa_sex);
115#endif
116
117extern int amiga_parse_bootinfo(const struct bi_record *);
118extern int atari_parse_bootinfo(const struct bi_record *);
119extern int mac_parse_bootinfo(const struct bi_record *);
120extern int q40_parse_bootinfo(const struct bi_record *);
121extern int bvme6000_parse_bootinfo(const struct bi_record *);
122extern int mvme16x_parse_bootinfo(const struct bi_record *);
123extern int mvme147_parse_bootinfo(const struct bi_record *);
124extern int hp300_parse_bootinfo(const struct bi_record *);
125extern int apollo_parse_bootinfo(const struct bi_record *);
126
127extern void config_amiga(void);
128extern void config_atari(void);
129extern void config_mac(void);
130extern void config_sun3(void);
131extern void config_apollo(void);
132extern void config_mvme147(void);
133extern void config_mvme16x(void);
134extern void config_bvme6000(void);
135extern void config_hp300(void);
136extern void config_q40(void);
137extern void config_sun3x(void);
138
139#define MASK_256K 0xfffc0000
140
141extern void paging_init(void);
142
143static void __init m68k_parse_bootinfo(const struct bi_record *record)
144{
145 uint16_t tag;
146
147 save_bootinfo(record);
148
149 while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
150 int unknown = 0;
151 const void *data = record->data;
152 uint16_t size = be16_to_cpu(record->size);
153
154 switch (tag) {
155 case BI_MACHTYPE:
156 case BI_CPUTYPE:
157 case BI_FPUTYPE:
158 case BI_MMUTYPE:
159 /* Already set up by head.S */
160 break;
161
162 case BI_MEMCHUNK:
163 if (m68k_num_memory < NUM_MEMINFO) {
164 const struct mem_info *m = data;
165 m68k_memory[m68k_num_memory].addr =
166 be32_to_cpu(m->addr);
167 m68k_memory[m68k_num_memory].size =
168 be32_to_cpu(m->size);
169 m68k_num_memory++;
170 } else
171 pr_warn("%s: too many memory chunks\n",
172 __func__);
173 break;
174
175 case BI_RAMDISK:
176 {
177 const struct mem_info *m = data;
178 m68k_ramdisk.addr = be32_to_cpu(m->addr);
179 m68k_ramdisk.size = be32_to_cpu(m->size);
180 }
181 break;
182
183 case BI_COMMAND_LINE:
184 strlcpy(m68k_command_line, data,
185 sizeof(m68k_command_line));
186 break;
187
188 default:
189 if (MACH_IS_AMIGA)
190 unknown = amiga_parse_bootinfo(record);
191 else if (MACH_IS_ATARI)
192 unknown = atari_parse_bootinfo(record);
193 else if (MACH_IS_MAC)
194 unknown = mac_parse_bootinfo(record);
195 else if (MACH_IS_Q40)
196 unknown = q40_parse_bootinfo(record);
197 else if (MACH_IS_BVME6000)
198 unknown = bvme6000_parse_bootinfo(record);
199 else if (MACH_IS_MVME16x)
200 unknown = mvme16x_parse_bootinfo(record);
201 else if (MACH_IS_MVME147)
202 unknown = mvme147_parse_bootinfo(record);
203 else if (MACH_IS_HP300)
204 unknown = hp300_parse_bootinfo(record);
205 else if (MACH_IS_APOLLO)
206 unknown = apollo_parse_bootinfo(record);
207 else
208 unknown = 1;
209 }
210 if (unknown)
211 pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
212 tag);
213 record = (struct bi_record *)((unsigned long)record + size);
214 }
215
216 m68k_realnum_memory = m68k_num_memory;
217#ifdef CONFIG_SINGLE_MEMORY_CHUNK
218 if (m68k_num_memory > 1) {
219 pr_warn("%s: ignoring last %i chunks of physical memory\n",
220 __func__, (m68k_num_memory - 1));
221 m68k_num_memory = 1;
222 }
223#endif
224}
225
226void __init setup_arch(char **cmdline_p)
227{
228 /* The bootinfo is located right after the kernel */
229 if (!CPU_IS_COLDFIRE)
230 m68k_parse_bootinfo((const struct bi_record *)_end);
231
232 if (CPU_IS_040)
233 m68k_is040or060 = 4;
234 else if (CPU_IS_060)
235 m68k_is040or060 = 6;
236
237 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
238 * be confused by software FPU emulation. BEWARE.
239 * We should really do our own FPU check at startup.
240 * [what do we do with buggy 68LC040s? if we have problems
241 * with them, we should add a test to check_bugs() below] */
242#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
243 /* clear the fpu if we have one */
244 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
245 volatile int zero = 0;
246 asm volatile ("frestore %0" : : "m" (zero));
247 }
248#endif
249
250 if (CPU_IS_060) {
251 u32 pcr;
252
253 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
254 : "=d" (pcr));
255 if (((pcr >> 8) & 0xff) <= 5) {
256 pr_warn("Enabling workaround for errata I14\n");
257 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
258 : : "d" (pcr | 0x20));
259 }
260 }
261
262 init_mm.start_code = PAGE_OFFSET;
263 init_mm.end_code = (unsigned long)_etext;
264 init_mm.end_data = (unsigned long)_edata;
265 init_mm.brk = (unsigned long)_end;
266
267#if defined(CONFIG_BOOTPARAM)
268 strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
269 m68k_command_line[CL_SIZE - 1] = 0;
270#endif /* CONFIG_BOOTPARAM */
271 process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
272 *cmdline_p = m68k_command_line;
273 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
274
275 parse_early_param();
276
277#ifdef CONFIG_DUMMY_CONSOLE
278 conswitchp = &dummy_con;
279#endif
280
281 switch (m68k_machtype) {
282#ifdef CONFIG_AMIGA
283 case MACH_AMIGA:
284 config_amiga();
285 break;
286#endif
287#ifdef CONFIG_ATARI
288 case MACH_ATARI:
289 config_atari();
290 break;
291#endif
292#ifdef CONFIG_MAC
293 case MACH_MAC:
294 config_mac();
295 break;
296#endif
297#ifdef CONFIG_SUN3
298 case MACH_SUN3:
299 config_sun3();
300 break;
301#endif
302#ifdef CONFIG_APOLLO
303 case MACH_APOLLO:
304 config_apollo();
305 break;
306#endif
307#ifdef CONFIG_MVME147
308 case MACH_MVME147:
309 config_mvme147();
310 break;
311#endif
312#ifdef CONFIG_MVME16x
313 case MACH_MVME16x:
314 config_mvme16x();
315 break;
316#endif
317#ifdef CONFIG_BVME6000
318 case MACH_BVME6000:
319 config_bvme6000();
320 break;
321#endif
322#ifdef CONFIG_HP300
323 case MACH_HP300:
324 config_hp300();
325 break;
326#endif
327#ifdef CONFIG_Q40
328 case MACH_Q40:
329 config_q40();
330 break;
331#endif
332#ifdef CONFIG_SUN3X
333 case MACH_SUN3X:
334 config_sun3x();
335 break;
336#endif
337#ifdef CONFIG_COLDFIRE
338 case MACH_M54XX:
339 case MACH_M5441X:
340 cf_bootmem_alloc();
341 cf_mmu_context_init();
342 config_BSP(NULL, 0);
343 break;
344#endif
345 default:
346 panic("No configuration setup");
347 }
348
349 paging_init();
350
351#ifdef CONFIG_NATFEAT
352 nf_init();
353#endif
354
355#ifndef CONFIG_SUN3
356#ifdef CONFIG_BLK_DEV_INITRD
357 if (m68k_ramdisk.size) {
358 memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size);
359 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
360 initrd_end = initrd_start + m68k_ramdisk.size;
361 pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
362 }
363#endif
364
365#ifdef CONFIG_ATARI
366 if (MACH_IS_ATARI)
367 atari_stram_reserve_pages((void *)availmem);
368#endif
369#ifdef CONFIG_SUN3X
370 if (MACH_IS_SUN3X) {
371 dvma_init();
372 }
373#endif
374
375#endif /* !CONFIG_SUN3 */
376
377/* set ISA defs early as possible */
378#if defined(CONFIG_ISA) && defined(MULTI_ISA)
379 if (MACH_IS_Q40) {
380 isa_type = ISA_TYPE_Q40;
381 isa_sex = 0;
382 }
383#ifdef CONFIG_AMIGA_PCMCIA
384 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
385 isa_type = ISA_TYPE_AG;
386 isa_sex = 1;
387 }
388#endif
389#ifdef CONFIG_ATARI_ROM_ISA
390 if (MACH_IS_ATARI) {
391 isa_type = ISA_TYPE_ENEC;
392 isa_sex = 0;
393 }
394#endif
395#endif
396}
397
398static int show_cpuinfo(struct seq_file *m, void *v)
399{
400 const char *cpu, *mmu, *fpu;
401 unsigned long clockfreq, clockfactor;
402
403#define LOOP_CYCLES_68020 (8)
404#define LOOP_CYCLES_68030 (8)
405#define LOOP_CYCLES_68040 (3)
406#define LOOP_CYCLES_68060 (1)
407#define LOOP_CYCLES_COLDFIRE (2)
408
409 if (CPU_IS_020) {
410 cpu = "68020";
411 clockfactor = LOOP_CYCLES_68020;
412 } else if (CPU_IS_030) {
413 cpu = "68030";
414 clockfactor = LOOP_CYCLES_68030;
415 } else if (CPU_IS_040) {
416 cpu = "68040";
417 clockfactor = LOOP_CYCLES_68040;
418 } else if (CPU_IS_060) {
419 cpu = "68060";
420 clockfactor = LOOP_CYCLES_68060;
421 } else if (CPU_IS_COLDFIRE) {
422 cpu = "ColdFire";
423 clockfactor = LOOP_CYCLES_COLDFIRE;
424 } else {
425 cpu = "680x0";
426 clockfactor = 0;
427 }
428
429#ifdef CONFIG_M68KFPU_EMU_ONLY
430 fpu = "none(soft float)";
431#else
432 if (m68k_fputype & FPU_68881)
433 fpu = "68881";
434 else if (m68k_fputype & FPU_68882)
435 fpu = "68882";
436 else if (m68k_fputype & FPU_68040)
437 fpu = "68040";
438 else if (m68k_fputype & FPU_68060)
439 fpu = "68060";
440 else if (m68k_fputype & FPU_SUNFPA)
441 fpu = "Sun FPA";
442 else if (m68k_fputype & FPU_COLDFIRE)
443 fpu = "ColdFire";
444 else
445 fpu = "none";
446#endif
447
448 if (m68k_mmutype & MMU_68851)
449 mmu = "68851";
450 else if (m68k_mmutype & MMU_68030)
451 mmu = "68030";
452 else if (m68k_mmutype & MMU_68040)
453 mmu = "68040";
454 else if (m68k_mmutype & MMU_68060)
455 mmu = "68060";
456 else if (m68k_mmutype & MMU_SUN3)
457 mmu = "Sun-3";
458 else if (m68k_mmutype & MMU_APOLLO)
459 mmu = "Apollo";
460 else if (m68k_mmutype & MMU_COLDFIRE)
461 mmu = "ColdFire";
462 else
463 mmu = "unknown";
464
465 clockfreq = loops_per_jiffy * HZ * clockfactor;
466
467 seq_printf(m, "CPU:\t\t%s\n"
468 "MMU:\t\t%s\n"
469 "FPU:\t\t%s\n"
470 "Clocking:\t%lu.%1luMHz\n"
471 "BogoMips:\t%lu.%02lu\n"
472 "Calibration:\t%lu loops\n",
473 cpu, mmu, fpu,
474 clockfreq/1000000,(clockfreq/100000)%10,
475 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
476 loops_per_jiffy);
477 return 0;
478}
479
480static void *c_start(struct seq_file *m, loff_t *pos)
481{
482 return *pos < 1 ? (void *)1 : NULL;
483}
484static void *c_next(struct seq_file *m, void *v, loff_t *pos)
485{
486 ++*pos;
487 return NULL;
488}
489static void c_stop(struct seq_file *m, void *v)
490{
491}
492const struct seq_operations cpuinfo_op = {
493 .start = c_start,
494 .next = c_next,
495 .stop = c_stop,
496 .show = show_cpuinfo,
497};
498
499#ifdef CONFIG_PROC_HARDWARE
500static int hardware_proc_show(struct seq_file *m, void *v)
501{
502 char model[80];
503 unsigned long mem;
504 int i;
505
506 if (mach_get_model)
507 mach_get_model(model);
508 else
509 strcpy(model, "Unknown m68k");
510
511 seq_printf(m, "Model:\t\t%s\n", model);
512 for (mem = 0, i = 0; i < m68k_num_memory; i++)
513 mem += m68k_memory[i].size;
514 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
515
516 if (mach_get_hardware_list)
517 mach_get_hardware_list(m);
518
519 return 0;
520}
521
522static int __init proc_hardware_init(void)
523{
524 proc_create_single("hardware", 0, NULL, hardware_proc_show);
525 return 0;
526}
527module_init(proc_hardware_init);
528#endif
529
530void check_bugs(void)
531{
532#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
533 if (m68k_fputype == 0) {
534 pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
535 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
536 pr_emerg("Upgrade your hardware or join the FPU "
537 "emulation project\n");
538 panic("no FPU");
539 }
540#endif /* !CONFIG_M68KFPU_EMU */
541}
542
543#ifdef CONFIG_ADB
544static int __init adb_probe_sync_enable (char *str) {
545 extern int __adb_probe_sync;
546 __adb_probe_sync = 1;
547 return 1;
548}
549
550__setup("adb_sync", adb_probe_sync_enable);
551#endif /* CONFIG_ADB */
552
553#if IS_ENABLED(CONFIG_NVRAM)
554#ifdef CONFIG_MAC
555static unsigned char m68k_nvram_read_byte(int addr)
556{
557 if (MACH_IS_MAC)
558 return mac_pram_read_byte(addr);
559 return 0xff;
560}
561
562static void m68k_nvram_write_byte(unsigned char val, int addr)
563{
564 if (MACH_IS_MAC)
565 mac_pram_write_byte(val, addr);
566}
567#endif /* CONFIG_MAC */
568
569#ifdef CONFIG_ATARI
570static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos)
571{
572 if (MACH_IS_ATARI)
573 return atari_nvram_read(buf, count, ppos);
574 else if (MACH_IS_MAC)
575 return nvram_read_bytes(buf, count, ppos);
576 return -EINVAL;
577}
578
579static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos)
580{
581 if (MACH_IS_ATARI)
582 return atari_nvram_write(buf, count, ppos);
583 else if (MACH_IS_MAC)
584 return nvram_write_bytes(buf, count, ppos);
585 return -EINVAL;
586}
587
588static long m68k_nvram_set_checksum(void)
589{
590 if (MACH_IS_ATARI)
591 return atari_nvram_set_checksum();
592 return -EINVAL;
593}
594
595static long m68k_nvram_initialize(void)
596{
597 if (MACH_IS_ATARI)
598 return atari_nvram_initialize();
599 return -EINVAL;
600}
601#endif /* CONFIG_ATARI */
602
603static ssize_t m68k_nvram_get_size(void)
604{
605 if (MACH_IS_ATARI)
606 return atari_nvram_get_size();
607 else if (MACH_IS_MAC)
608 return mac_pram_get_size();
609 return -ENODEV;
610}
611
612/* Atari device drivers call .read (to get checksum validation) whereas
613 * Mac and PowerMac device drivers just use .read_byte.
614 */
615const struct nvram_ops arch_nvram_ops = {
616#ifdef CONFIG_MAC
617 .read_byte = m68k_nvram_read_byte,
618 .write_byte = m68k_nvram_write_byte,
619#endif
620#ifdef CONFIG_ATARI
621 .read = m68k_nvram_read,
622 .write = m68k_nvram_write,
623 .set_checksum = m68k_nvram_set_checksum,
624 .initialize = m68k_nvram_initialize,
625#endif
626 .get_size = m68k_nvram_get_size,
627};
628EXPORT_SYMBOL(arch_nvram_ops);
629#endif /* CONFIG_NVRAM */
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/byteorder.h>
30#include <asm/sections.h>
31#include <asm/setup.h>
32#include <asm/fpu.h>
33#include <asm/irq.h>
34#include <asm/io.h>
35#include <asm/machdep.h>
36#ifdef CONFIG_AMIGA
37#include <asm/amigahw.h>
38#endif
39#ifdef CONFIG_ATARI
40#include <asm/atarihw.h>
41#include <asm/atari_stram.h>
42#endif
43#ifdef CONFIG_SUN3X
44#include <asm/dvma.h>
45#endif
46#include <asm/natfeat.h>
47
48#if !FPSTATESIZE || !NR_IRQS
49#warning No CPU/platform type selected, your kernel will not work!
50#warning Are you building an allnoconfig kernel?
51#endif
52
53unsigned long m68k_machtype;
54EXPORT_SYMBOL(m68k_machtype);
55unsigned long m68k_cputype;
56EXPORT_SYMBOL(m68k_cputype);
57unsigned long m68k_fputype;
58unsigned long m68k_mmutype;
59EXPORT_SYMBOL(m68k_mmutype);
60#ifdef CONFIG_VME
61unsigned long vme_brdtype;
62EXPORT_SYMBOL(vme_brdtype);
63#endif
64
65int m68k_is040or060;
66EXPORT_SYMBOL(m68k_is040or060);
67
68extern unsigned long availmem;
69
70int m68k_num_memory;
71EXPORT_SYMBOL(m68k_num_memory);
72int m68k_realnum_memory;
73EXPORT_SYMBOL(m68k_realnum_memory);
74unsigned long m68k_memoffset;
75struct m68k_mem_info m68k_memory[NUM_MEMINFO];
76EXPORT_SYMBOL(m68k_memory);
77
78static struct m68k_mem_info m68k_ramdisk __initdata;
79
80static char m68k_command_line[CL_SIZE] __initdata;
81
82void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
83/* machine dependent irq functions */
84void (*mach_init_IRQ) (void) __initdata = NULL;
85void (*mach_get_model) (char *model);
86void (*mach_get_hardware_list) (struct seq_file *m);
87/* machine dependent timer functions */
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 IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
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 uint16_t tag;
148
149 save_bootinfo(record);
150
151 while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
152 int unknown = 0;
153 const void *data = record->data;
154 uint16_t size = be16_to_cpu(record->size);
155
156 switch (tag) {
157 case BI_MACHTYPE:
158 case BI_CPUTYPE:
159 case BI_FPUTYPE:
160 case BI_MMUTYPE:
161 /* Already set up by head.S */
162 break;
163
164 case BI_MEMCHUNK:
165 if (m68k_num_memory < NUM_MEMINFO) {
166 const struct mem_info *m = data;
167 m68k_memory[m68k_num_memory].addr =
168 be32_to_cpu(m->addr);
169 m68k_memory[m68k_num_memory].size =
170 be32_to_cpu(m->size);
171 m68k_num_memory++;
172 } else
173 pr_warn("%s: too many memory chunks\n",
174 __func__);
175 break;
176
177 case BI_RAMDISK:
178 {
179 const struct mem_info *m = data;
180 m68k_ramdisk.addr = be32_to_cpu(m->addr);
181 m68k_ramdisk.size = be32_to_cpu(m->size);
182 }
183 break;
184
185 case BI_COMMAND_LINE:
186 strlcpy(m68k_command_line, data,
187 sizeof(m68k_command_line));
188 break;
189
190 default:
191 if (MACH_IS_AMIGA)
192 unknown = amiga_parse_bootinfo(record);
193 else if (MACH_IS_ATARI)
194 unknown = atari_parse_bootinfo(record);
195 else if (MACH_IS_MAC)
196 unknown = mac_parse_bootinfo(record);
197 else if (MACH_IS_Q40)
198 unknown = q40_parse_bootinfo(record);
199 else if (MACH_IS_BVME6000)
200 unknown = bvme6000_parse_bootinfo(record);
201 else if (MACH_IS_MVME16x)
202 unknown = mvme16x_parse_bootinfo(record);
203 else if (MACH_IS_MVME147)
204 unknown = mvme147_parse_bootinfo(record);
205 else if (MACH_IS_HP300)
206 unknown = hp300_parse_bootinfo(record);
207 else if (MACH_IS_APOLLO)
208 unknown = apollo_parse_bootinfo(record);
209 else
210 unknown = 1;
211 }
212 if (unknown)
213 pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
214 tag);
215 record = (struct bi_record *)((unsigned long)record + size);
216 }
217
218 m68k_realnum_memory = m68k_num_memory;
219#ifdef CONFIG_SINGLE_MEMORY_CHUNK
220 if (m68k_num_memory > 1) {
221 pr_warn("%s: ignoring last %i chunks of physical memory\n",
222 __func__, (m68k_num_memory - 1));
223 m68k_num_memory = 1;
224 }
225#endif
226}
227
228void __init setup_arch(char **cmdline_p)
229{
230#ifndef CONFIG_SUN3
231 int i;
232#endif
233
234 /* The bootinfo is located right after the kernel */
235 if (!CPU_IS_COLDFIRE)
236 m68k_parse_bootinfo((const struct bi_record *)_end);
237
238 if (CPU_IS_040)
239 m68k_is040or060 = 4;
240 else if (CPU_IS_060)
241 m68k_is040or060 = 6;
242
243 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
244 * be confused by software FPU emulation. BEWARE.
245 * We should really do our own FPU check at startup.
246 * [what do we do with buggy 68LC040s? if we have problems
247 * with them, we should add a test to check_bugs() below] */
248#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
249 /* clear the fpu if we have one */
250 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
251 volatile int zero = 0;
252 asm volatile ("frestore %0" : : "m" (zero));
253 }
254#endif
255
256 if (CPU_IS_060) {
257 u32 pcr;
258
259 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
260 : "=d" (pcr));
261 if (((pcr >> 8) & 0xff) <= 5) {
262 pr_warn("Enabling workaround for errata I14\n");
263 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
264 : : "d" (pcr | 0x20));
265 }
266 }
267
268 init_mm.start_code = PAGE_OFFSET;
269 init_mm.end_code = (unsigned long)_etext;
270 init_mm.end_data = (unsigned long)_edata;
271 init_mm.brk = (unsigned long)_end;
272
273#if defined(CONFIG_BOOTPARAM)
274 strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
275 m68k_command_line[CL_SIZE - 1] = 0;
276#endif /* CONFIG_BOOTPARAM */
277 process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
278 *cmdline_p = m68k_command_line;
279 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
280
281 parse_early_param();
282
283#ifdef CONFIG_DUMMY_CONSOLE
284 conswitchp = &dummy_con;
285#endif
286
287 switch (m68k_machtype) {
288#ifdef CONFIG_AMIGA
289 case MACH_AMIGA:
290 config_amiga();
291 break;
292#endif
293#ifdef CONFIG_ATARI
294 case MACH_ATARI:
295 config_atari();
296 break;
297#endif
298#ifdef CONFIG_MAC
299 case MACH_MAC:
300 config_mac();
301 break;
302#endif
303#ifdef CONFIG_SUN3
304 case MACH_SUN3:
305 config_sun3();
306 break;
307#endif
308#ifdef CONFIG_APOLLO
309 case MACH_APOLLO:
310 config_apollo();
311 break;
312#endif
313#ifdef CONFIG_MVME147
314 case MACH_MVME147:
315 config_mvme147();
316 break;
317#endif
318#ifdef CONFIG_MVME16x
319 case MACH_MVME16x:
320 config_mvme16x();
321 break;
322#endif
323#ifdef CONFIG_BVME6000
324 case MACH_BVME6000:
325 config_bvme6000();
326 break;
327#endif
328#ifdef CONFIG_HP300
329 case MACH_HP300:
330 config_hp300();
331 break;
332#endif
333#ifdef CONFIG_Q40
334 case MACH_Q40:
335 config_q40();
336 break;
337#endif
338#ifdef CONFIG_SUN3X
339 case MACH_SUN3X:
340 config_sun3x();
341 break;
342#endif
343#ifdef CONFIG_COLDFIRE
344 case MACH_M54XX:
345 case MACH_M5441X:
346 config_BSP(NULL, 0);
347 break;
348#endif
349 default:
350 panic("No configuration setup");
351 }
352
353 paging_init();
354
355#ifdef CONFIG_NATFEAT
356 nf_init();
357#endif
358
359#ifndef CONFIG_SUN3
360 for (i = 1; i < m68k_num_memory; i++)
361 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
362 m68k_memory[i].size);
363#ifdef CONFIG_BLK_DEV_INITRD
364 if (m68k_ramdisk.size) {
365 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
366 m68k_ramdisk.addr, m68k_ramdisk.size,
367 BOOTMEM_DEFAULT);
368 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
369 initrd_end = initrd_start + m68k_ramdisk.size;
370 pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
371 }
372#endif
373
374#ifdef CONFIG_ATARI
375 if (MACH_IS_ATARI)
376 atari_stram_reserve_pages((void *)availmem);
377#endif
378#ifdef CONFIG_SUN3X
379 if (MACH_IS_SUN3X) {
380 dvma_init();
381 }
382#endif
383
384#endif /* !CONFIG_SUN3 */
385
386/* set ISA defs early as possible */
387#if defined(CONFIG_ISA) && defined(MULTI_ISA)
388 if (MACH_IS_Q40) {
389 isa_type = ISA_TYPE_Q40;
390 isa_sex = 0;
391 }
392#ifdef CONFIG_AMIGA_PCMCIA
393 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
394 isa_type = ISA_TYPE_AG;
395 isa_sex = 1;
396 }
397#endif
398#ifdef CONFIG_ATARI_ROM_ISA
399 if (MACH_IS_ATARI) {
400 isa_type = ISA_TYPE_ENEC;
401 isa_sex = 0;
402 }
403#endif
404#endif
405}
406
407static int show_cpuinfo(struct seq_file *m, void *v)
408{
409 const char *cpu, *mmu, *fpu;
410 unsigned long clockfreq, clockfactor;
411
412#define LOOP_CYCLES_68020 (8)
413#define LOOP_CYCLES_68030 (8)
414#define LOOP_CYCLES_68040 (3)
415#define LOOP_CYCLES_68060 (1)
416#define LOOP_CYCLES_COLDFIRE (2)
417
418 if (CPU_IS_020) {
419 cpu = "68020";
420 clockfactor = LOOP_CYCLES_68020;
421 } else if (CPU_IS_030) {
422 cpu = "68030";
423 clockfactor = LOOP_CYCLES_68030;
424 } else if (CPU_IS_040) {
425 cpu = "68040";
426 clockfactor = LOOP_CYCLES_68040;
427 } else if (CPU_IS_060) {
428 cpu = "68060";
429 clockfactor = LOOP_CYCLES_68060;
430 } else if (CPU_IS_COLDFIRE) {
431 cpu = "ColdFire";
432 clockfactor = LOOP_CYCLES_COLDFIRE;
433 } else {
434 cpu = "680x0";
435 clockfactor = 0;
436 }
437
438#ifdef CONFIG_M68KFPU_EMU_ONLY
439 fpu = "none(soft float)";
440#else
441 if (m68k_fputype & FPU_68881)
442 fpu = "68881";
443 else if (m68k_fputype & FPU_68882)
444 fpu = "68882";
445 else if (m68k_fputype & FPU_68040)
446 fpu = "68040";
447 else if (m68k_fputype & FPU_68060)
448 fpu = "68060";
449 else if (m68k_fputype & FPU_SUNFPA)
450 fpu = "Sun FPA";
451 else if (m68k_fputype & FPU_COLDFIRE)
452 fpu = "ColdFire";
453 else
454 fpu = "none";
455#endif
456
457 if (m68k_mmutype & MMU_68851)
458 mmu = "68851";
459 else if (m68k_mmutype & MMU_68030)
460 mmu = "68030";
461 else if (m68k_mmutype & MMU_68040)
462 mmu = "68040";
463 else if (m68k_mmutype & MMU_68060)
464 mmu = "68060";
465 else if (m68k_mmutype & MMU_SUN3)
466 mmu = "Sun-3";
467 else if (m68k_mmutype & MMU_APOLLO)
468 mmu = "Apollo";
469 else if (m68k_mmutype & MMU_COLDFIRE)
470 mmu = "ColdFire";
471 else
472 mmu = "unknown";
473
474 clockfreq = loops_per_jiffy * HZ * clockfactor;
475
476 seq_printf(m, "CPU:\t\t%s\n"
477 "MMU:\t\t%s\n"
478 "FPU:\t\t%s\n"
479 "Clocking:\t%lu.%1luMHz\n"
480 "BogoMips:\t%lu.%02lu\n"
481 "Calibration:\t%lu loops\n",
482 cpu, mmu, fpu,
483 clockfreq/1000000,(clockfreq/100000)%10,
484 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
485 loops_per_jiffy);
486 return 0;
487}
488
489static void *c_start(struct seq_file *m, loff_t *pos)
490{
491 return *pos < 1 ? (void *)1 : NULL;
492}
493static void *c_next(struct seq_file *m, void *v, loff_t *pos)
494{
495 ++*pos;
496 return NULL;
497}
498static void c_stop(struct seq_file *m, void *v)
499{
500}
501const struct seq_operations cpuinfo_op = {
502 .start = c_start,
503 .next = c_next,
504 .stop = c_stop,
505 .show = show_cpuinfo,
506};
507
508#ifdef CONFIG_PROC_HARDWARE
509static int hardware_proc_show(struct seq_file *m, void *v)
510{
511 char model[80];
512 unsigned long mem;
513 int i;
514
515 if (mach_get_model)
516 mach_get_model(model);
517 else
518 strcpy(model, "Unknown m68k");
519
520 seq_printf(m, "Model:\t\t%s\n", model);
521 for (mem = 0, i = 0; i < m68k_num_memory; i++)
522 mem += m68k_memory[i].size;
523 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
524
525 if (mach_get_hardware_list)
526 mach_get_hardware_list(m);
527
528 return 0;
529}
530
531static int hardware_proc_open(struct inode *inode, struct file *file)
532{
533 return single_open(file, hardware_proc_show, NULL);
534}
535
536static const struct file_operations hardware_proc_fops = {
537 .open = hardware_proc_open,
538 .read = seq_read,
539 .llseek = seq_lseek,
540 .release = single_release,
541};
542
543static int __init proc_hardware_init(void)
544{
545 proc_create("hardware", 0, NULL, &hardware_proc_fops);
546 return 0;
547}
548module_init(proc_hardware_init);
549#endif
550
551void check_bugs(void)
552{
553#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
554 if (m68k_fputype == 0) {
555 pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
556 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
557 pr_emerg("Upgrade your hardware or join the FPU "
558 "emulation project\n");
559 panic("no FPU");
560 }
561#endif /* !CONFIG_M68KFPU_EMU */
562}
563
564#ifdef CONFIG_ADB
565static int __init adb_probe_sync_enable (char *str) {
566 extern int __adb_probe_sync;
567 __adb_probe_sync = 1;
568 return 1;
569}
570
571__setup("adb_sync", adb_probe_sync_enable);
572#endif /* CONFIG_ADB */