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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/errno.h>
20#include <linux/string.h>
21#include <linux/init.h>
22#include <linux/memblock.h>
23#include <linux/proc_fs.h>
24#include <linux/seq_file.h>
25#include <linux/module.h>
26#include <linux/nvram.h>
27#include <linux/initrd.h>
28#include <linux/random.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#include <asm/config.h>
51
52#if !FPSTATESIZE || !NR_IRQS
53#warning No CPU/platform type selected, your kernel will not work!
54#warning Are you building an allnoconfig kernel?
55#endif
56
57unsigned long m68k_machtype;
58EXPORT_SYMBOL(m68k_machtype);
59unsigned long m68k_cputype;
60EXPORT_SYMBOL(m68k_cputype);
61unsigned long m68k_fputype;
62unsigned long m68k_mmutype;
63EXPORT_SYMBOL(m68k_mmutype);
64#ifdef CONFIG_VME
65unsigned long vme_brdtype;
66EXPORT_SYMBOL(vme_brdtype);
67#endif
68
69int m68k_is040or060;
70EXPORT_SYMBOL(m68k_is040or060);
71
72extern unsigned long availmem;
73
74int m68k_num_memory;
75EXPORT_SYMBOL(m68k_num_memory);
76int m68k_realnum_memory;
77EXPORT_SYMBOL(m68k_realnum_memory);
78unsigned long m68k_memoffset;
79struct m68k_mem_info m68k_memory[NUM_MEMINFO];
80EXPORT_SYMBOL(m68k_memory);
81
82static struct m68k_mem_info m68k_ramdisk __initdata;
83
84static char m68k_command_line[CL_SIZE] __initdata;
85
86void (*mach_sched_init) (void) __initdata = NULL;
87/* machine dependent irq functions */
88void (*mach_init_IRQ) (void) __initdata = NULL;
89void (*mach_get_model) (char *model);
90void (*mach_get_hardware_list) (struct seq_file *m);
91void (*mach_reset)( void );
92void (*mach_halt)( void );
93#ifdef CONFIG_HEARTBEAT
94void (*mach_heartbeat) (int);
95EXPORT_SYMBOL(mach_heartbeat);
96#endif
97#ifdef CONFIG_M68K_L2_CACHE
98void (*mach_l2_flush) (int);
99#endif
100#if defined(CONFIG_ISA) && defined(MULTI_ISA)
101int isa_type;
102int isa_sex;
103EXPORT_SYMBOL(isa_type);
104EXPORT_SYMBOL(isa_sex);
105#endif
106
107#define MASK_256K 0xfffc0000
108
109extern void paging_init(void);
110
111static void __init m68k_parse_bootinfo(const struct bi_record *record)
112{
113 const struct bi_record *first_record = record;
114 uint16_t tag;
115
116 while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
117 int unknown = 0;
118 const void *data = record->data;
119 uint16_t size = be16_to_cpu(record->size);
120
121 switch (tag) {
122 case BI_MACHTYPE:
123 case BI_CPUTYPE:
124 case BI_FPUTYPE:
125 case BI_MMUTYPE:
126 /* Already set up by head.S */
127 break;
128
129 case BI_MEMCHUNK:
130 if (m68k_num_memory < NUM_MEMINFO) {
131 const struct mem_info *m = data;
132 m68k_memory[m68k_num_memory].addr =
133 be32_to_cpu(m->addr);
134 m68k_memory[m68k_num_memory].size =
135 be32_to_cpu(m->size);
136 m68k_num_memory++;
137 } else
138 pr_warn("%s: too many memory chunks\n",
139 __func__);
140 break;
141
142 case BI_RAMDISK:
143 {
144 const struct mem_info *m = data;
145 m68k_ramdisk.addr = be32_to_cpu(m->addr);
146 m68k_ramdisk.size = be32_to_cpu(m->size);
147 }
148 break;
149
150 case BI_COMMAND_LINE:
151 strscpy(m68k_command_line, data,
152 sizeof(m68k_command_line));
153 break;
154
155 case BI_RNG_SEED: {
156 u16 len = be16_to_cpup(data);
157 add_bootloader_randomness(data + 2, len);
158 /*
159 * Zero the data to preserve forward secrecy, and zero the
160 * length to prevent kexec from using it.
161 */
162 memzero_explicit((void *)data, len + 2);
163 break;
164 }
165
166 default:
167 if (MACH_IS_AMIGA)
168 unknown = amiga_parse_bootinfo(record);
169 else if (MACH_IS_ATARI)
170 unknown = atari_parse_bootinfo(record);
171 else if (MACH_IS_MAC)
172 unknown = mac_parse_bootinfo(record);
173 else if (MACH_IS_Q40)
174 unknown = q40_parse_bootinfo(record);
175 else if (MACH_IS_BVME6000)
176 unknown = bvme6000_parse_bootinfo(record);
177 else if (MACH_IS_MVME16x)
178 unknown = mvme16x_parse_bootinfo(record);
179 else if (MACH_IS_MVME147)
180 unknown = mvme147_parse_bootinfo(record);
181 else if (MACH_IS_HP300)
182 unknown = hp300_parse_bootinfo(record);
183 else if (MACH_IS_APOLLO)
184 unknown = apollo_parse_bootinfo(record);
185 else if (MACH_IS_VIRT)
186 unknown = virt_parse_bootinfo(record);
187 else
188 unknown = 1;
189 }
190 if (unknown)
191 pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
192 tag);
193 record = (struct bi_record *)((unsigned long)record + size);
194 }
195
196 save_bootinfo(first_record);
197
198 m68k_realnum_memory = m68k_num_memory;
199#ifdef CONFIG_SINGLE_MEMORY_CHUNK
200 if (m68k_num_memory > 1) {
201 pr_warn("%s: ignoring last %i chunks of physical memory\n",
202 __func__, (m68k_num_memory - 1));
203 m68k_num_memory = 1;
204 }
205#endif
206}
207
208void __init setup_arch(char **cmdline_p)
209{
210 /* The bootinfo is located right after the kernel */
211 if (!CPU_IS_COLDFIRE)
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 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
220 * be confused by software FPU emulation. BEWARE.
221 * We should really do our own FPU check at startup.
222 * [what do we do with buggy 68LC040s? if we have problems
223 * with them, we should add a test to check_bugs() below] */
224#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
225 /* clear the fpu if we have one */
226 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
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 pr_warn("Enabling workaround for errata I14\n");
239 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
240 : : "d" (pcr | 0x20));
241 }
242 }
243
244 setup_initial_init_mm((void *)PAGE_OFFSET, _etext, _edata, _end);
245
246#if defined(CONFIG_BOOTPARAM)
247 strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
248 m68k_command_line[CL_SIZE - 1] = 0;
249#endif /* CONFIG_BOOTPARAM */
250 process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
251 *cmdline_p = m68k_command_line;
252 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
253
254 parse_early_param();
255
256 switch (m68k_machtype) {
257#ifdef CONFIG_AMIGA
258 case MACH_AMIGA:
259 config_amiga();
260 break;
261#endif
262#ifdef CONFIG_ATARI
263 case MACH_ATARI:
264 config_atari();
265 break;
266#endif
267#ifdef CONFIG_MAC
268 case MACH_MAC:
269 config_mac();
270 break;
271#endif
272#ifdef CONFIG_SUN3
273 case MACH_SUN3:
274 config_sun3();
275 break;
276#endif
277#ifdef CONFIG_APOLLO
278 case MACH_APOLLO:
279 config_apollo();
280 break;
281#endif
282#ifdef CONFIG_MVME147
283 case MACH_MVME147:
284 config_mvme147();
285 break;
286#endif
287#ifdef CONFIG_MVME16x
288 case MACH_MVME16x:
289 config_mvme16x();
290 break;
291#endif
292#ifdef CONFIG_BVME6000
293 case MACH_BVME6000:
294 config_bvme6000();
295 break;
296#endif
297#ifdef CONFIG_HP300
298 case MACH_HP300:
299 config_hp300();
300 break;
301#endif
302#ifdef CONFIG_Q40
303 case MACH_Q40:
304 config_q40();
305 break;
306#endif
307#ifdef CONFIG_SUN3X
308 case MACH_SUN3X:
309 config_sun3x();
310 break;
311#endif
312#ifdef CONFIG_COLDFIRE
313 case MACH_M54XX:
314 case MACH_M5441X:
315 cf_bootmem_alloc();
316 cf_mmu_context_init();
317 config_BSP(NULL, 0);
318 break;
319#endif
320#ifdef CONFIG_VIRT
321 case MACH_VIRT:
322 config_virt();
323 break;
324#endif
325 default:
326 panic("No configuration setup");
327 }
328
329#ifdef CONFIG_BLK_DEV_INITRD
330 if (m68k_ramdisk.size) {
331 memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size);
332 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
333 initrd_end = initrd_start + m68k_ramdisk.size;
334 pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
335 }
336#endif
337
338 paging_init();
339
340#ifdef CONFIG_NATFEAT
341 nf_init();
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/* set ISA defs early as possible */
355#if defined(CONFIG_ISA) && defined(MULTI_ISA)
356 if (MACH_IS_Q40) {
357 isa_type = ISA_TYPE_Q40;
358 isa_sex = 0;
359 }
360#ifdef CONFIG_AMIGA_PCMCIA
361 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
362 isa_type = ISA_TYPE_AG;
363 isa_sex = 1;
364 }
365#endif
366#ifdef CONFIG_ATARI_ROM_ISA
367 if (MACH_IS_ATARI) {
368 isa_type = ISA_TYPE_ENEC;
369 isa_sex = 0;
370 }
371#endif
372#endif
373}
374
375static int show_cpuinfo(struct seq_file *m, void *v)
376{
377 const char *cpu, *mmu, *fpu;
378 unsigned long clockfreq, clockfactor;
379
380#define LOOP_CYCLES_68020 (8)
381#define LOOP_CYCLES_68030 (8)
382#define LOOP_CYCLES_68040 (3)
383#define LOOP_CYCLES_68060 (1)
384#define LOOP_CYCLES_COLDFIRE (2)
385
386 if (CPU_IS_020) {
387 cpu = "68020";
388 clockfactor = LOOP_CYCLES_68020;
389 } else if (CPU_IS_030) {
390 cpu = "68030";
391 clockfactor = LOOP_CYCLES_68030;
392 } else if (CPU_IS_040) {
393 cpu = "68040";
394 clockfactor = LOOP_CYCLES_68040;
395 } else if (CPU_IS_060) {
396 cpu = "68060";
397 clockfactor = LOOP_CYCLES_68060;
398 } else if (CPU_IS_COLDFIRE) {
399 cpu = "ColdFire";
400 clockfactor = LOOP_CYCLES_COLDFIRE;
401 } else {
402 cpu = "680x0";
403 clockfactor = 0;
404 }
405
406#ifdef CONFIG_M68KFPU_EMU_ONLY
407 fpu = "none(soft float)";
408#else
409 if (m68k_fputype & FPU_68881)
410 fpu = "68881";
411 else if (m68k_fputype & FPU_68882)
412 fpu = "68882";
413 else if (m68k_fputype & FPU_68040)
414 fpu = "68040";
415 else if (m68k_fputype & FPU_68060)
416 fpu = "68060";
417 else if (m68k_fputype & FPU_SUNFPA)
418 fpu = "Sun FPA";
419 else if (m68k_fputype & FPU_COLDFIRE)
420 fpu = "ColdFire";
421 else
422 fpu = "none";
423#endif
424
425 if (m68k_mmutype & MMU_68851)
426 mmu = "68851";
427 else if (m68k_mmutype & MMU_68030)
428 mmu = "68030";
429 else if (m68k_mmutype & MMU_68040)
430 mmu = "68040";
431 else if (m68k_mmutype & MMU_68060)
432 mmu = "68060";
433 else if (m68k_mmutype & MMU_SUN3)
434 mmu = "Sun-3";
435 else if (m68k_mmutype & MMU_APOLLO)
436 mmu = "Apollo";
437 else if (m68k_mmutype & MMU_COLDFIRE)
438 mmu = "ColdFire";
439 else
440 mmu = "unknown";
441
442 clockfreq = loops_per_jiffy * HZ * clockfactor;
443
444 seq_printf(m, "CPU:\t\t%s\n"
445 "MMU:\t\t%s\n"
446 "FPU:\t\t%s\n"
447 "Clocking:\t%lu.%1luMHz\n"
448 "BogoMips:\t%lu.%02lu\n"
449 "Calibration:\t%lu loops\n",
450 cpu, mmu, fpu,
451 clockfreq/1000000,(clockfreq/100000)%10,
452 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
453 loops_per_jiffy);
454 return 0;
455}
456
457static void *c_start(struct seq_file *m, loff_t *pos)
458{
459 return *pos < 1 ? (void *)1 : NULL;
460}
461static void *c_next(struct seq_file *m, void *v, loff_t *pos)
462{
463 ++*pos;
464 return NULL;
465}
466static void c_stop(struct seq_file *m, void *v)
467{
468}
469const struct seq_operations cpuinfo_op = {
470 .start = c_start,
471 .next = c_next,
472 .stop = c_stop,
473 .show = show_cpuinfo,
474};
475
476#ifdef CONFIG_PROC_HARDWARE
477static int hardware_proc_show(struct seq_file *m, void *v)
478{
479 char model[80];
480 unsigned long mem;
481 int i;
482
483 if (mach_get_model)
484 mach_get_model(model);
485 else
486 strcpy(model, "Unknown m68k");
487
488 seq_printf(m, "Model:\t\t%s\n", model);
489 for (mem = 0, i = 0; i < m68k_num_memory; i++)
490 mem += m68k_memory[i].size;
491 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
492
493 if (mach_get_hardware_list)
494 mach_get_hardware_list(m);
495
496 return 0;
497}
498
499static int __init proc_hardware_init(void)
500{
501 proc_create_single("hardware", 0, NULL, hardware_proc_show);
502 return 0;
503}
504module_init(proc_hardware_init);
505#endif
506
507void check_bugs(void)
508{
509#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
510 if (m68k_fputype == 0) {
511 pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
512 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
513 pr_emerg("Upgrade your hardware or join the FPU "
514 "emulation project\n");
515 panic("no FPU");
516 }
517#endif /* !CONFIG_M68KFPU_EMU */
518}
519
520#ifdef CONFIG_ADB
521static int __init adb_probe_sync_enable (char *str) {
522 extern int __adb_probe_sync;
523 __adb_probe_sync = 1;
524 return 1;
525}
526
527__setup("adb_sync", adb_probe_sync_enable);
528#endif /* CONFIG_ADB */
529
530#if IS_ENABLED(CONFIG_NVRAM)
531#ifdef CONFIG_MAC
532static unsigned char m68k_nvram_read_byte(int addr)
533{
534 if (MACH_IS_MAC)
535 return mac_pram_read_byte(addr);
536 return 0xff;
537}
538
539static void m68k_nvram_write_byte(unsigned char val, int addr)
540{
541 if (MACH_IS_MAC)
542 mac_pram_write_byte(val, addr);
543}
544#endif /* CONFIG_MAC */
545
546#ifdef CONFIG_ATARI
547static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos)
548{
549 if (MACH_IS_ATARI)
550 return atari_nvram_read(buf, count, ppos);
551 else if (MACH_IS_MAC)
552 return nvram_read_bytes(buf, count, ppos);
553 return -EINVAL;
554}
555
556static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos)
557{
558 if (MACH_IS_ATARI)
559 return atari_nvram_write(buf, count, ppos);
560 else if (MACH_IS_MAC)
561 return nvram_write_bytes(buf, count, ppos);
562 return -EINVAL;
563}
564
565static long m68k_nvram_set_checksum(void)
566{
567 if (MACH_IS_ATARI)
568 return atari_nvram_set_checksum();
569 return -EINVAL;
570}
571
572static long m68k_nvram_initialize(void)
573{
574 if (MACH_IS_ATARI)
575 return atari_nvram_initialize();
576 return -EINVAL;
577}
578#endif /* CONFIG_ATARI */
579
580static ssize_t m68k_nvram_get_size(void)
581{
582 if (MACH_IS_ATARI)
583 return atari_nvram_get_size();
584 else if (MACH_IS_MAC)
585 return mac_pram_get_size();
586 return -ENODEV;
587}
588
589/* Atari device drivers call .read (to get checksum validation) whereas
590 * Mac and PowerMac device drivers just use .read_byte.
591 */
592const struct nvram_ops arch_nvram_ops = {
593#ifdef CONFIG_MAC
594 .read_byte = m68k_nvram_read_byte,
595 .write_byte = m68k_nvram_write_byte,
596#endif
597#ifdef CONFIG_ATARI
598 .read = m68k_nvram_read,
599 .write = m68k_nvram_write,
600 .set_checksum = m68k_nvram_set_checksum,
601 .initialize = m68k_nvram_initialize,
602#endif
603 .get_size = m68k_nvram_get_size,
604};
605EXPORT_SYMBOL(arch_nvram_ops);
606#endif /* CONFIG_NVRAM */
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/bootmem.h>
24#include <linux/proc_fs.h>
25#include <linux/seq_file.h>
26#include <linux/module.h>
27#include <linux/initrd.h>
28
29#include <asm/bootinfo.h>
30#include <asm/byteorder.h>
31#include <asm/sections.h>
32#include <asm/setup.h>
33#include <asm/fpu.h>
34#include <asm/irq.h>
35#include <asm/io.h>
36#include <asm/machdep.h>
37#ifdef CONFIG_AMIGA
38#include <asm/amigahw.h>
39#endif
40#ifdef CONFIG_ATARI
41#include <asm/atarihw.h>
42#include <asm/atari_stram.h>
43#endif
44#ifdef CONFIG_SUN3X
45#include <asm/dvma.h>
46#endif
47#include <asm/natfeat.h>
48
49#if !FPSTATESIZE || !NR_IRQS
50#warning No CPU/platform type selected, your kernel will not work!
51#warning Are you building an allnoconfig kernel?
52#endif
53
54unsigned long m68k_machtype;
55EXPORT_SYMBOL(m68k_machtype);
56unsigned long m68k_cputype;
57EXPORT_SYMBOL(m68k_cputype);
58unsigned long m68k_fputype;
59unsigned long m68k_mmutype;
60EXPORT_SYMBOL(m68k_mmutype);
61#ifdef CONFIG_VME
62unsigned long vme_brdtype;
63EXPORT_SYMBOL(vme_brdtype);
64#endif
65
66int m68k_is040or060;
67EXPORT_SYMBOL(m68k_is040or060);
68
69extern unsigned long availmem;
70
71int m68k_num_memory;
72EXPORT_SYMBOL(m68k_num_memory);
73int m68k_realnum_memory;
74EXPORT_SYMBOL(m68k_realnum_memory);
75unsigned long m68k_memoffset;
76struct m68k_mem_info m68k_memory[NUM_MEMINFO];
77EXPORT_SYMBOL(m68k_memory);
78
79static struct m68k_mem_info m68k_ramdisk __initdata;
80
81static char m68k_command_line[CL_SIZE] __initdata;
82
83void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
84/* machine dependent irq functions */
85void (*mach_init_IRQ) (void) __initdata = NULL;
86void (*mach_get_model) (char *model);
87void (*mach_get_hardware_list) (struct seq_file *m);
88/* machine dependent timer functions */
89int (*mach_hwclk) (int, struct rtc_time*);
90EXPORT_SYMBOL(mach_hwclk);
91int (*mach_set_clock_mmss) (unsigned long);
92unsigned int (*mach_get_ss)(void);
93int (*mach_get_rtc_pll)(struct rtc_pll_info *);
94int (*mach_set_rtc_pll)(struct rtc_pll_info *);
95EXPORT_SYMBOL(mach_get_ss);
96EXPORT_SYMBOL(mach_get_rtc_pll);
97EXPORT_SYMBOL(mach_set_rtc_pll);
98void (*mach_reset)( void );
99void (*mach_halt)( void );
100void (*mach_power_off)( void );
101long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
102#ifdef CONFIG_HEARTBEAT
103void (*mach_heartbeat) (int);
104EXPORT_SYMBOL(mach_heartbeat);
105#endif
106#ifdef CONFIG_M68K_L2_CACHE
107void (*mach_l2_flush) (int);
108#endif
109#if defined(CONFIG_ISA) && defined(MULTI_ISA)
110int isa_type;
111int isa_sex;
112EXPORT_SYMBOL(isa_type);
113EXPORT_SYMBOL(isa_sex);
114#endif
115
116extern int amiga_parse_bootinfo(const struct bi_record *);
117extern int atari_parse_bootinfo(const struct bi_record *);
118extern int mac_parse_bootinfo(const struct bi_record *);
119extern int q40_parse_bootinfo(const struct bi_record *);
120extern int bvme6000_parse_bootinfo(const struct bi_record *);
121extern int mvme16x_parse_bootinfo(const struct bi_record *);
122extern int mvme147_parse_bootinfo(const struct bi_record *);
123extern int hp300_parse_bootinfo(const struct bi_record *);
124extern int apollo_parse_bootinfo(const struct bi_record *);
125
126extern void config_amiga(void);
127extern void config_atari(void);
128extern void config_mac(void);
129extern void config_sun3(void);
130extern void config_apollo(void);
131extern void config_mvme147(void);
132extern void config_mvme16x(void);
133extern void config_bvme6000(void);
134extern void config_hp300(void);
135extern void config_q40(void);
136extern void config_sun3x(void);
137
138#define MASK_256K 0xfffc0000
139
140extern void paging_init(void);
141
142static void __init m68k_parse_bootinfo(const struct bi_record *record)
143{
144 uint16_t tag;
145
146 save_bootinfo(record);
147
148 while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
149 int unknown = 0;
150 const void *data = record->data;
151 uint16_t size = be16_to_cpu(record->size);
152
153 switch (tag) {
154 case BI_MACHTYPE:
155 case BI_CPUTYPE:
156 case BI_FPUTYPE:
157 case BI_MMUTYPE:
158 /* Already set up by head.S */
159 break;
160
161 case BI_MEMCHUNK:
162 if (m68k_num_memory < NUM_MEMINFO) {
163 const struct mem_info *m = data;
164 m68k_memory[m68k_num_memory].addr =
165 be32_to_cpu(m->addr);
166 m68k_memory[m68k_num_memory].size =
167 be32_to_cpu(m->size);
168 m68k_num_memory++;
169 } else
170 pr_warn("%s: too many memory chunks\n",
171 __func__);
172 break;
173
174 case BI_RAMDISK:
175 {
176 const struct mem_info *m = data;
177 m68k_ramdisk.addr = be32_to_cpu(m->addr);
178 m68k_ramdisk.size = be32_to_cpu(m->size);
179 }
180 break;
181
182 case BI_COMMAND_LINE:
183 strlcpy(m68k_command_line, data,
184 sizeof(m68k_command_line));
185 break;
186
187 default:
188 if (MACH_IS_AMIGA)
189 unknown = amiga_parse_bootinfo(record);
190 else if (MACH_IS_ATARI)
191 unknown = atari_parse_bootinfo(record);
192 else if (MACH_IS_MAC)
193 unknown = mac_parse_bootinfo(record);
194 else if (MACH_IS_Q40)
195 unknown = q40_parse_bootinfo(record);
196 else if (MACH_IS_BVME6000)
197 unknown = bvme6000_parse_bootinfo(record);
198 else if (MACH_IS_MVME16x)
199 unknown = mvme16x_parse_bootinfo(record);
200 else if (MACH_IS_MVME147)
201 unknown = mvme147_parse_bootinfo(record);
202 else if (MACH_IS_HP300)
203 unknown = hp300_parse_bootinfo(record);
204 else if (MACH_IS_APOLLO)
205 unknown = apollo_parse_bootinfo(record);
206 else
207 unknown = 1;
208 }
209 if (unknown)
210 pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
211 tag);
212 record = (struct bi_record *)((unsigned long)record + size);
213 }
214
215 m68k_realnum_memory = m68k_num_memory;
216#ifdef CONFIG_SINGLE_MEMORY_CHUNK
217 if (m68k_num_memory > 1) {
218 pr_warn("%s: ignoring last %i chunks of physical memory\n",
219 __func__, (m68k_num_memory - 1));
220 m68k_num_memory = 1;
221 }
222#endif
223}
224
225void __init setup_arch(char **cmdline_p)
226{
227#ifndef CONFIG_SUN3
228 int i;
229#endif
230
231 /* The bootinfo is located right after the kernel */
232 if (!CPU_IS_COLDFIRE)
233 m68k_parse_bootinfo((const struct bi_record *)_end);
234
235 if (CPU_IS_040)
236 m68k_is040or060 = 4;
237 else if (CPU_IS_060)
238 m68k_is040or060 = 6;
239
240 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
241 * be confused by software FPU emulation. BEWARE.
242 * We should really do our own FPU check at startup.
243 * [what do we do with buggy 68LC040s? if we have problems
244 * with them, we should add a test to check_bugs() below] */
245#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
246 /* clear the fpu if we have one */
247 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
248 volatile int zero = 0;
249 asm volatile ("frestore %0" : : "m" (zero));
250 }
251#endif
252
253 if (CPU_IS_060) {
254 u32 pcr;
255
256 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
257 : "=d" (pcr));
258 if (((pcr >> 8) & 0xff) <= 5) {
259 pr_warn("Enabling workaround for errata I14\n");
260 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
261 : : "d" (pcr | 0x20));
262 }
263 }
264
265 init_mm.start_code = PAGE_OFFSET;
266 init_mm.end_code = (unsigned long)_etext;
267 init_mm.end_data = (unsigned long)_edata;
268 init_mm.brk = (unsigned long)_end;
269
270#if defined(CONFIG_BOOTPARAM)
271 strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
272 m68k_command_line[CL_SIZE - 1] = 0;
273#endif /* CONFIG_BOOTPARAM */
274 process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
275 *cmdline_p = m68k_command_line;
276 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
277
278 parse_early_param();
279
280#ifdef CONFIG_DUMMY_CONSOLE
281 conswitchp = &dummy_con;
282#endif
283
284 switch (m68k_machtype) {
285#ifdef CONFIG_AMIGA
286 case MACH_AMIGA:
287 config_amiga();
288 break;
289#endif
290#ifdef CONFIG_ATARI
291 case MACH_ATARI:
292 config_atari();
293 break;
294#endif
295#ifdef CONFIG_MAC
296 case MACH_MAC:
297 config_mac();
298 break;
299#endif
300#ifdef CONFIG_SUN3
301 case MACH_SUN3:
302 config_sun3();
303 break;
304#endif
305#ifdef CONFIG_APOLLO
306 case MACH_APOLLO:
307 config_apollo();
308 break;
309#endif
310#ifdef CONFIG_MVME147
311 case MACH_MVME147:
312 config_mvme147();
313 break;
314#endif
315#ifdef CONFIG_MVME16x
316 case MACH_MVME16x:
317 config_mvme16x();
318 break;
319#endif
320#ifdef CONFIG_BVME6000
321 case MACH_BVME6000:
322 config_bvme6000();
323 break;
324#endif
325#ifdef CONFIG_HP300
326 case MACH_HP300:
327 config_hp300();
328 break;
329#endif
330#ifdef CONFIG_Q40
331 case MACH_Q40:
332 config_q40();
333 break;
334#endif
335#ifdef CONFIG_SUN3X
336 case MACH_SUN3X:
337 config_sun3x();
338 break;
339#endif
340#ifdef CONFIG_COLDFIRE
341 case MACH_M54XX:
342 case MACH_M5441X:
343 cf_bootmem_alloc();
344 cf_mmu_context_init();
345 config_BSP(NULL, 0);
346 break;
347#endif
348 default:
349 panic("No configuration setup");
350 }
351
352 paging_init();
353
354#ifdef CONFIG_NATFEAT
355 nf_init();
356#endif
357
358#ifndef CONFIG_SUN3
359 for (i = 1; i < m68k_num_memory; i++)
360 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
361 m68k_memory[i].size);
362#ifdef CONFIG_BLK_DEV_INITRD
363 if (m68k_ramdisk.size) {
364 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
365 m68k_ramdisk.addr, m68k_ramdisk.size,
366 BOOTMEM_DEFAULT);
367 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
368 initrd_end = initrd_start + m68k_ramdisk.size;
369 pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
370 }
371#endif
372
373#ifdef CONFIG_ATARI
374 if (MACH_IS_ATARI)
375 atari_stram_reserve_pages((void *)availmem);
376#endif
377#ifdef CONFIG_SUN3X
378 if (MACH_IS_SUN3X) {
379 dvma_init();
380 }
381#endif
382
383#endif /* !CONFIG_SUN3 */
384
385/* set ISA defs early as possible */
386#if defined(CONFIG_ISA) && defined(MULTI_ISA)
387 if (MACH_IS_Q40) {
388 isa_type = ISA_TYPE_Q40;
389 isa_sex = 0;
390 }
391#ifdef CONFIG_AMIGA_PCMCIA
392 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
393 isa_type = ISA_TYPE_AG;
394 isa_sex = 1;
395 }
396#endif
397#ifdef CONFIG_ATARI_ROM_ISA
398 if (MACH_IS_ATARI) {
399 isa_type = ISA_TYPE_ENEC;
400 isa_sex = 0;
401 }
402#endif
403#endif
404}
405
406static int show_cpuinfo(struct seq_file *m, void *v)
407{
408 const char *cpu, *mmu, *fpu;
409 unsigned long clockfreq, clockfactor;
410
411#define LOOP_CYCLES_68020 (8)
412#define LOOP_CYCLES_68030 (8)
413#define LOOP_CYCLES_68040 (3)
414#define LOOP_CYCLES_68060 (1)
415#define LOOP_CYCLES_COLDFIRE (2)
416
417 if (CPU_IS_020) {
418 cpu = "68020";
419 clockfactor = LOOP_CYCLES_68020;
420 } else if (CPU_IS_030) {
421 cpu = "68030";
422 clockfactor = LOOP_CYCLES_68030;
423 } else if (CPU_IS_040) {
424 cpu = "68040";
425 clockfactor = LOOP_CYCLES_68040;
426 } else if (CPU_IS_060) {
427 cpu = "68060";
428 clockfactor = LOOP_CYCLES_68060;
429 } else if (CPU_IS_COLDFIRE) {
430 cpu = "ColdFire";
431 clockfactor = LOOP_CYCLES_COLDFIRE;
432 } else {
433 cpu = "680x0";
434 clockfactor = 0;
435 }
436
437#ifdef CONFIG_M68KFPU_EMU_ONLY
438 fpu = "none(soft float)";
439#else
440 if (m68k_fputype & FPU_68881)
441 fpu = "68881";
442 else if (m68k_fputype & FPU_68882)
443 fpu = "68882";
444 else if (m68k_fputype & FPU_68040)
445 fpu = "68040";
446 else if (m68k_fputype & FPU_68060)
447 fpu = "68060";
448 else if (m68k_fputype & FPU_SUNFPA)
449 fpu = "Sun FPA";
450 else if (m68k_fputype & FPU_COLDFIRE)
451 fpu = "ColdFire";
452 else
453 fpu = "none";
454#endif
455
456 if (m68k_mmutype & MMU_68851)
457 mmu = "68851";
458 else if (m68k_mmutype & MMU_68030)
459 mmu = "68030";
460 else if (m68k_mmutype & MMU_68040)
461 mmu = "68040";
462 else if (m68k_mmutype & MMU_68060)
463 mmu = "68060";
464 else if (m68k_mmutype & MMU_SUN3)
465 mmu = "Sun-3";
466 else if (m68k_mmutype & MMU_APOLLO)
467 mmu = "Apollo";
468 else if (m68k_mmutype & MMU_COLDFIRE)
469 mmu = "ColdFire";
470 else
471 mmu = "unknown";
472
473 clockfreq = loops_per_jiffy * HZ * clockfactor;
474
475 seq_printf(m, "CPU:\t\t%s\n"
476 "MMU:\t\t%s\n"
477 "FPU:\t\t%s\n"
478 "Clocking:\t%lu.%1luMHz\n"
479 "BogoMips:\t%lu.%02lu\n"
480 "Calibration:\t%lu loops\n",
481 cpu, mmu, fpu,
482 clockfreq/1000000,(clockfreq/100000)%10,
483 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
484 loops_per_jiffy);
485 return 0;
486}
487
488static void *c_start(struct seq_file *m, loff_t *pos)
489{
490 return *pos < 1 ? (void *)1 : NULL;
491}
492static void *c_next(struct seq_file *m, void *v, loff_t *pos)
493{
494 ++*pos;
495 return NULL;
496}
497static void c_stop(struct seq_file *m, void *v)
498{
499}
500const struct seq_operations cpuinfo_op = {
501 .start = c_start,
502 .next = c_next,
503 .stop = c_stop,
504 .show = show_cpuinfo,
505};
506
507#ifdef CONFIG_PROC_HARDWARE
508static int hardware_proc_show(struct seq_file *m, void *v)
509{
510 char model[80];
511 unsigned long mem;
512 int i;
513
514 if (mach_get_model)
515 mach_get_model(model);
516 else
517 strcpy(model, "Unknown m68k");
518
519 seq_printf(m, "Model:\t\t%s\n", model);
520 for (mem = 0, i = 0; i < m68k_num_memory; i++)
521 mem += m68k_memory[i].size;
522 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
523
524 if (mach_get_hardware_list)
525 mach_get_hardware_list(m);
526
527 return 0;
528}
529
530static int hardware_proc_open(struct inode *inode, struct file *file)
531{
532 return single_open(file, hardware_proc_show, NULL);
533}
534
535static const struct file_operations hardware_proc_fops = {
536 .open = hardware_proc_open,
537 .read = seq_read,
538 .llseek = seq_lseek,
539 .release = single_release,
540};
541
542static int __init proc_hardware_init(void)
543{
544 proc_create("hardware", 0, NULL, &hardware_proc_fops);
545 return 0;
546}
547module_init(proc_hardware_init);
548#endif
549
550void check_bugs(void)
551{
552#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
553 if (m68k_fputype == 0) {
554 pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
555 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
556 pr_emerg("Upgrade your hardware or join the FPU "
557 "emulation project\n");
558 panic("no FPU");
559 }
560#endif /* !CONFIG_M68KFPU_EMU */
561}
562
563#ifdef CONFIG_ADB
564static int __init adb_probe_sync_enable (char *str) {
565 extern int __adb_probe_sync;
566 __adb_probe_sync = 1;
567 return 1;
568}
569
570__setup("adb_sync", adb_probe_sync_enable);
571#endif /* CONFIG_ADB */