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