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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/sections.h>
30#include <asm/setup.h>
31#include <asm/fpu.h>
32#include <asm/irq.h>
33#include <asm/io.h>
34#include <asm/machdep.h>
35#ifdef CONFIG_AMIGA
36#include <asm/amigahw.h>
37#endif
38#ifdef CONFIG_ATARI
39#include <asm/atarihw.h>
40#include <asm/atari_stram.h>
41#endif
42#ifdef CONFIG_SUN3X
43#include <asm/dvma.h>
44#endif
45#include <asm/natfeat.h>
46
47#if !FPSTATESIZE || !NR_IRQS
48#warning No CPU/platform type selected, your kernel will not work!
49#warning Are you building an allnoconfig kernel?
50#endif
51
52unsigned long m68k_machtype;
53EXPORT_SYMBOL(m68k_machtype);
54unsigned long m68k_cputype;
55EXPORT_SYMBOL(m68k_cputype);
56unsigned long m68k_fputype;
57unsigned long m68k_mmutype;
58EXPORT_SYMBOL(m68k_mmutype);
59#ifdef CONFIG_VME
60unsigned long vme_brdtype;
61EXPORT_SYMBOL(vme_brdtype);
62#endif
63
64int m68k_is040or060;
65EXPORT_SYMBOL(m68k_is040or060);
66
67extern unsigned long availmem;
68
69int m68k_num_memory;
70EXPORT_SYMBOL(m68k_num_memory);
71int m68k_realnum_memory;
72EXPORT_SYMBOL(m68k_realnum_memory);
73unsigned long m68k_memoffset;
74struct mem_info m68k_memory[NUM_MEMINFO];
75EXPORT_SYMBOL(m68k_memory);
76
77struct mem_info m68k_ramdisk;
78
79static char m68k_command_line[CL_SIZE];
80
81void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
82/* machine dependent irq functions */
83void (*mach_init_IRQ) (void) __initdata = NULL;
84void (*mach_get_model) (char *model);
85void (*mach_get_hardware_list) (struct seq_file *m);
86/* machine dependent timer functions */
87unsigned long (*mach_gettimeoffset) (void);
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 defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
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 while (record->tag != BI_LAST) {
148 int unknown = 0;
149 const unsigned long *data = record->data;
150
151 switch (record->tag) {
152 case BI_MACHTYPE:
153 case BI_CPUTYPE:
154 case BI_FPUTYPE:
155 case BI_MMUTYPE:
156 /* Already set up by head.S */
157 break;
158
159 case BI_MEMCHUNK:
160 if (m68k_num_memory < NUM_MEMINFO) {
161 m68k_memory[m68k_num_memory].addr = data[0];
162 m68k_memory[m68k_num_memory].size = data[1];
163 m68k_num_memory++;
164 } else
165 printk("m68k_parse_bootinfo: too many memory chunks\n");
166 break;
167
168 case BI_RAMDISK:
169 m68k_ramdisk.addr = data[0];
170 m68k_ramdisk.size = data[1];
171 break;
172
173 case BI_COMMAND_LINE:
174 strlcpy(m68k_command_line, (const char *)data,
175 sizeof(m68k_command_line));
176 break;
177
178 default:
179 if (MACH_IS_AMIGA)
180 unknown = amiga_parse_bootinfo(record);
181 else if (MACH_IS_ATARI)
182 unknown = atari_parse_bootinfo(record);
183 else if (MACH_IS_MAC)
184 unknown = mac_parse_bootinfo(record);
185 else if (MACH_IS_Q40)
186 unknown = q40_parse_bootinfo(record);
187 else if (MACH_IS_BVME6000)
188 unknown = bvme6000_parse_bootinfo(record);
189 else if (MACH_IS_MVME16x)
190 unknown = mvme16x_parse_bootinfo(record);
191 else if (MACH_IS_MVME147)
192 unknown = mvme147_parse_bootinfo(record);
193 else if (MACH_IS_HP300)
194 unknown = hp300_parse_bootinfo(record);
195 else if (MACH_IS_APOLLO)
196 unknown = apollo_parse_bootinfo(record);
197 else
198 unknown = 1;
199 }
200 if (unknown)
201 printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
202 record->tag);
203 record = (struct bi_record *)((unsigned long)record +
204 record->size);
205 }
206
207 m68k_realnum_memory = m68k_num_memory;
208#ifdef CONFIG_SINGLE_MEMORY_CHUNK
209 if (m68k_num_memory > 1) {
210 printk("Ignoring last %i chunks of physical memory\n",
211 (m68k_num_memory - 1));
212 m68k_num_memory = 1;
213 }
214#endif
215}
216
217void __init setup_arch(char **cmdline_p)
218{
219#ifndef CONFIG_SUN3
220 int i;
221#endif
222
223 /* The bootinfo is located right after the kernel bss */
224 m68k_parse_bootinfo((const struct bi_record *)_end);
225
226 if (CPU_IS_040)
227 m68k_is040or060 = 4;
228 else if (CPU_IS_060)
229 m68k_is040or060 = 6;
230
231 /* FIXME: m68k_fputype is passed in by Penguin booter, which can
232 * be confused by software FPU emulation. BEWARE.
233 * We should really do our own FPU check at startup.
234 * [what do we do with buggy 68LC040s? if we have problems
235 * with them, we should add a test to check_bugs() below] */
236#ifndef CONFIG_M68KFPU_EMU_ONLY
237 /* clear the fpu if we have one */
238 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
239 volatile int zero = 0;
240 asm volatile ("frestore %0" : : "m" (zero));
241 }
242#endif
243
244 if (CPU_IS_060) {
245 u32 pcr;
246
247 asm (".chip 68060; movec %%pcr,%0; .chip 68k"
248 : "=d" (pcr));
249 if (((pcr >> 8) & 0xff) <= 5) {
250 printk("Enabling workaround for errata I14\n");
251 asm (".chip 68060; movec %0,%%pcr; .chip 68k"
252 : : "d" (pcr | 0x20));
253 }
254 }
255
256 init_mm.start_code = PAGE_OFFSET;
257 init_mm.end_code = (unsigned long)_etext;
258 init_mm.end_data = (unsigned long)_edata;
259 init_mm.brk = (unsigned long)_end;
260
261 *cmdline_p = m68k_command_line;
262 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
263
264 parse_early_param();
265
266#ifdef CONFIG_DUMMY_CONSOLE
267 conswitchp = &dummy_con;
268#endif
269
270 switch (m68k_machtype) {
271#ifdef CONFIG_AMIGA
272 case MACH_AMIGA:
273 config_amiga();
274 break;
275#endif
276#ifdef CONFIG_ATARI
277 case MACH_ATARI:
278 config_atari();
279 break;
280#endif
281#ifdef CONFIG_MAC
282 case MACH_MAC:
283 config_mac();
284 break;
285#endif
286#ifdef CONFIG_SUN3
287 case MACH_SUN3:
288 config_sun3();
289 break;
290#endif
291#ifdef CONFIG_APOLLO
292 case MACH_APOLLO:
293 config_apollo();
294 break;
295#endif
296#ifdef CONFIG_MVME147
297 case MACH_MVME147:
298 config_mvme147();
299 break;
300#endif
301#ifdef CONFIG_MVME16x
302 case MACH_MVME16x:
303 config_mvme16x();
304 break;
305#endif
306#ifdef CONFIG_BVME6000
307 case MACH_BVME6000:
308 config_bvme6000();
309 break;
310#endif
311#ifdef CONFIG_HP300
312 case MACH_HP300:
313 config_hp300();
314 break;
315#endif
316#ifdef CONFIG_Q40
317 case MACH_Q40:
318 config_q40();
319 break;
320#endif
321#ifdef CONFIG_SUN3X
322 case MACH_SUN3X:
323 config_sun3x();
324 break;
325#endif
326 default:
327 panic("No configuration setup");
328 }
329
330#ifdef CONFIG_NATFEAT
331 nf_init();
332#endif
333
334 paging_init();
335
336#ifndef CONFIG_SUN3
337 for (i = 1; i < m68k_num_memory; i++)
338 free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
339 m68k_memory[i].size);
340#ifdef CONFIG_BLK_DEV_INITRD
341 if (m68k_ramdisk.size) {
342 reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
343 m68k_ramdisk.addr, m68k_ramdisk.size,
344 BOOTMEM_DEFAULT);
345 initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
346 initrd_end = initrd_start + m68k_ramdisk.size;
347 printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
348 }
349#endif
350
351#ifdef CONFIG_ATARI
352 if (MACH_IS_ATARI)
353 atari_stram_reserve_pages((void *)availmem);
354#endif
355#ifdef CONFIG_SUN3X
356 if (MACH_IS_SUN3X) {
357 dvma_init();
358 }
359#endif
360
361#endif /* !CONFIG_SUN3 */
362
363/* set ISA defs early as possible */
364#if defined(CONFIG_ISA) && defined(MULTI_ISA)
365 if (MACH_IS_Q40) {
366 isa_type = ISA_TYPE_Q40;
367 isa_sex = 0;
368 }
369#ifdef CONFIG_AMIGA_PCMCIA
370 if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
371 isa_type = ISA_TYPE_AG;
372 isa_sex = 1;
373 }
374#endif
375#endif
376}
377
378static int show_cpuinfo(struct seq_file *m, void *v)
379{
380 const char *cpu, *mmu, *fpu;
381 unsigned long clockfreq, clockfactor;
382
383#define LOOP_CYCLES_68020 (8)
384#define LOOP_CYCLES_68030 (8)
385#define LOOP_CYCLES_68040 (3)
386#define LOOP_CYCLES_68060 (1)
387
388 if (CPU_IS_020) {
389 cpu = "68020";
390 clockfactor = LOOP_CYCLES_68020;
391 } else if (CPU_IS_030) {
392 cpu = "68030";
393 clockfactor = LOOP_CYCLES_68030;
394 } else if (CPU_IS_040) {
395 cpu = "68040";
396 clockfactor = LOOP_CYCLES_68040;
397 } else if (CPU_IS_060) {
398 cpu = "68060";
399 clockfactor = LOOP_CYCLES_68060;
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
419 fpu = "none";
420#endif
421
422 if (m68k_mmutype & MMU_68851)
423 mmu = "68851";
424 else if (m68k_mmutype & MMU_68030)
425 mmu = "68030";
426 else if (m68k_mmutype & MMU_68040)
427 mmu = "68040";
428 else if (m68k_mmutype & MMU_68060)
429 mmu = "68060";
430 else if (m68k_mmutype & MMU_SUN3)
431 mmu = "Sun-3";
432 else if (m68k_mmutype & MMU_APOLLO)
433 mmu = "Apollo";
434 else
435 mmu = "unknown";
436
437 clockfreq = loops_per_jiffy * HZ * clockfactor;
438
439 seq_printf(m, "CPU:\t\t%s\n"
440 "MMU:\t\t%s\n"
441 "FPU:\t\t%s\n"
442 "Clocking:\t%lu.%1luMHz\n"
443 "BogoMips:\t%lu.%02lu\n"
444 "Calibration:\t%lu loops\n",
445 cpu, mmu, fpu,
446 clockfreq/1000000,(clockfreq/100000)%10,
447 loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
448 loops_per_jiffy);
449 return 0;
450}
451
452static void *c_start(struct seq_file *m, loff_t *pos)
453{
454 return *pos < 1 ? (void *)1 : NULL;
455}
456static void *c_next(struct seq_file *m, void *v, loff_t *pos)
457{
458 ++*pos;
459 return NULL;
460}
461static void c_stop(struct seq_file *m, void *v)
462{
463}
464const struct seq_operations cpuinfo_op = {
465 .start = c_start,
466 .next = c_next,
467 .stop = c_stop,
468 .show = show_cpuinfo,
469};
470
471#ifdef CONFIG_PROC_HARDWARE
472static int hardware_proc_show(struct seq_file *m, void *v)
473{
474 char model[80];
475 unsigned long mem;
476 int i;
477
478 if (mach_get_model)
479 mach_get_model(model);
480 else
481 strcpy(model, "Unknown m68k");
482
483 seq_printf(m, "Model:\t\t%s\n", model);
484 for (mem = 0, i = 0; i < m68k_num_memory; i++)
485 mem += m68k_memory[i].size;
486 seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
487
488 if (mach_get_hardware_list)
489 mach_get_hardware_list(m);
490
491 return 0;
492}
493
494static int hardware_proc_open(struct inode *inode, struct file *file)
495{
496 return single_open(file, hardware_proc_show, NULL);
497}
498
499static const struct file_operations hardware_proc_fops = {
500 .open = hardware_proc_open,
501 .read = seq_read,
502 .llseek = seq_lseek,
503 .release = single_release,
504};
505
506static int __init proc_hardware_init(void)
507{
508 proc_create("hardware", 0, NULL, &hardware_proc_fops);
509 return 0;
510}
511module_init(proc_hardware_init);
512#endif
513
514void check_bugs(void)
515{
516#ifndef CONFIG_M68KFPU_EMU
517 if (m68k_fputype == 0) {
518 printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
519 "WHICH IS REQUIRED BY LINUX/M68K ***\n");
520 printk(KERN_EMERG "Upgrade your hardware or join the FPU "
521 "emulation project\n");
522 panic("no FPU");
523 }
524#endif /* !CONFIG_M68KFPU_EMU */
525}
526
527#ifdef CONFIG_ADB
528static int __init adb_probe_sync_enable (char *str) {
529 extern int __adb_probe_sync;
530 __adb_probe_sync = 1;
531 return 1;
532}
533
534__setup("adb_sync", adb_probe_sync_enable);
535#endif /* CONFIG_ADB */
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 */