Loading...
1/*
2 * linux/arch/sparc64/kernel/setup.c
3 *
4 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#include <linux/errno.h>
9#include <linux/sched.h>
10#include <linux/kernel.h>
11#include <linux/mm.h>
12#include <linux/stddef.h>
13#include <linux/unistd.h>
14#include <linux/ptrace.h>
15#include <asm/smp.h>
16#include <linux/user.h>
17#include <linux/screen_info.h>
18#include <linux/delay.h>
19#include <linux/fs.h>
20#include <linux/seq_file.h>
21#include <linux/syscalls.h>
22#include <linux/kdev_t.h>
23#include <linux/major.h>
24#include <linux/string.h>
25#include <linux/init.h>
26#include <linux/inet.h>
27#include <linux/console.h>
28#include <linux/root_dev.h>
29#include <linux/interrupt.h>
30#include <linux/cpu.h>
31#include <linux/initrd.h>
32#include <linux/module.h>
33
34#include <asm/io.h>
35#include <asm/processor.h>
36#include <asm/oplib.h>
37#include <asm/page.h>
38#include <asm/pgtable.h>
39#include <asm/idprom.h>
40#include <asm/head.h>
41#include <asm/starfire.h>
42#include <asm/mmu_context.h>
43#include <asm/timer.h>
44#include <asm/sections.h>
45#include <asm/setup.h>
46#include <asm/mmu.h>
47#include <asm/ns87303.h>
48#include <asm/btext.h>
49#include <asm/elf.h>
50#include <asm/mdesc.h>
51#include <asm/cacheflush.h>
52
53#ifdef CONFIG_IP_PNP
54#include <net/ipconfig.h>
55#endif
56
57#include "entry.h"
58#include "kernel.h"
59
60/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
61 * operations in asm/ns87303.h
62 */
63DEFINE_SPINLOCK(ns87303_lock);
64EXPORT_SYMBOL(ns87303_lock);
65
66struct screen_info screen_info = {
67 0, 0, /* orig-x, orig-y */
68 0, /* unused */
69 0, /* orig-video-page */
70 0, /* orig-video-mode */
71 128, /* orig-video-cols */
72 0, 0, 0, /* unused, ega_bx, unused */
73 54, /* orig-video-lines */
74 0, /* orig-video-isVGA */
75 16 /* orig-video-points */
76};
77
78static void
79prom_console_write(struct console *con, const char *s, unsigned n)
80{
81 prom_write(s, n);
82}
83
84/* Exported for mm/init.c:paging_init. */
85unsigned long cmdline_memory_size = 0;
86
87static struct console prom_early_console = {
88 .name = "earlyprom",
89 .write = prom_console_write,
90 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
91 .index = -1,
92};
93
94/*
95 * Process kernel command line switches that are specific to the
96 * SPARC or that require special low-level processing.
97 */
98static void __init process_switch(char c)
99{
100 switch (c) {
101 case 'd':
102 case 's':
103 break;
104 case 'h':
105 prom_printf("boot_flags_init: Halt!\n");
106 prom_halt();
107 break;
108 case 'p':
109 prom_early_console.flags &= ~CON_BOOT;
110 break;
111 case 'P':
112 /* Force UltraSPARC-III P-Cache on. */
113 if (tlb_type != cheetah) {
114 printk("BOOT: Ignoring P-Cache force option.\n");
115 break;
116 }
117 cheetah_pcache_forced_on = 1;
118 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
119 cheetah_enable_pcache();
120 break;
121
122 default:
123 printk("Unknown boot switch (-%c)\n", c);
124 break;
125 }
126}
127
128static void __init boot_flags_init(char *commands)
129{
130 while (*commands) {
131 /* Move to the start of the next "argument". */
132 while (*commands && *commands == ' ')
133 commands++;
134
135 /* Process any command switches, otherwise skip it. */
136 if (*commands == '\0')
137 break;
138 if (*commands == '-') {
139 commands++;
140 while (*commands && *commands != ' ')
141 process_switch(*commands++);
142 continue;
143 }
144 if (!strncmp(commands, "mem=", 4)) {
145 /*
146 * "mem=XXX[kKmM]" overrides the PROM-reported
147 * memory size.
148 */
149 cmdline_memory_size = simple_strtoul(commands + 4,
150 &commands, 0);
151 if (*commands == 'K' || *commands == 'k') {
152 cmdline_memory_size <<= 10;
153 commands++;
154 } else if (*commands=='M' || *commands=='m') {
155 cmdline_memory_size <<= 20;
156 commands++;
157 }
158 }
159 while (*commands && *commands != ' ')
160 commands++;
161 }
162}
163
164extern unsigned short root_flags;
165extern unsigned short root_dev;
166extern unsigned short ram_flags;
167#define RAMDISK_IMAGE_START_MASK 0x07FF
168#define RAMDISK_PROMPT_FLAG 0x8000
169#define RAMDISK_LOAD_FLAG 0x4000
170
171extern int root_mountflags;
172
173char reboot_command[COMMAND_LINE_SIZE];
174
175static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
176
177void __init per_cpu_patch(void)
178{
179 struct cpuid_patch_entry *p;
180 unsigned long ver;
181 int is_jbus;
182
183 if (tlb_type == spitfire && !this_is_starfire)
184 return;
185
186 is_jbus = 0;
187 if (tlb_type != hypervisor) {
188 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
189 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
190 (ver >> 32UL) == __SERRANO_ID);
191 }
192
193 p = &__cpuid_patch;
194 while (p < &__cpuid_patch_end) {
195 unsigned long addr = p->addr;
196 unsigned int *insns;
197
198 switch (tlb_type) {
199 case spitfire:
200 insns = &p->starfire[0];
201 break;
202 case cheetah:
203 case cheetah_plus:
204 if (is_jbus)
205 insns = &p->cheetah_jbus[0];
206 else
207 insns = &p->cheetah_safari[0];
208 break;
209 case hypervisor:
210 insns = &p->sun4v[0];
211 break;
212 default:
213 prom_printf("Unknown cpu type, halting.\n");
214 prom_halt();
215 }
216
217 *(unsigned int *) (addr + 0) = insns[0];
218 wmb();
219 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
220
221 *(unsigned int *) (addr + 4) = insns[1];
222 wmb();
223 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
224
225 *(unsigned int *) (addr + 8) = insns[2];
226 wmb();
227 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
228
229 *(unsigned int *) (addr + 12) = insns[3];
230 wmb();
231 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
232
233 p++;
234 }
235}
236
237void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start,
238 struct sun4v_1insn_patch_entry *end)
239{
240 while (start < end) {
241 unsigned long addr = start->addr;
242
243 *(unsigned int *) (addr + 0) = start->insn;
244 wmb();
245 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
246
247 start++;
248 }
249}
250
251void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
252 struct sun4v_2insn_patch_entry *end)
253{
254 while (start < end) {
255 unsigned long addr = start->addr;
256
257 *(unsigned int *) (addr + 0) = start->insns[0];
258 wmb();
259 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
260
261 *(unsigned int *) (addr + 4) = start->insns[1];
262 wmb();
263 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
264
265 start++;
266 }
267}
268
269void __init sun4v_patch(void)
270{
271 extern void sun4v_hvapi_init(void);
272
273 if (tlb_type != hypervisor)
274 return;
275
276 sun4v_patch_1insn_range(&__sun4v_1insn_patch,
277 &__sun4v_1insn_patch_end);
278
279 sun4v_patch_2insn_range(&__sun4v_2insn_patch,
280 &__sun4v_2insn_patch_end);
281
282 sun4v_hvapi_init();
283}
284
285static void __init popc_patch(void)
286{
287 struct popc_3insn_patch_entry *p3;
288 struct popc_6insn_patch_entry *p6;
289
290 p3 = &__popc_3insn_patch;
291 while (p3 < &__popc_3insn_patch_end) {
292 unsigned long i, addr = p3->addr;
293
294 for (i = 0; i < 3; i++) {
295 *(unsigned int *) (addr + (i * 4)) = p3->insns[i];
296 wmb();
297 __asm__ __volatile__("flush %0"
298 : : "r" (addr + (i * 4)));
299 }
300
301 p3++;
302 }
303
304 p6 = &__popc_6insn_patch;
305 while (p6 < &__popc_6insn_patch_end) {
306 unsigned long i, addr = p6->addr;
307
308 for (i = 0; i < 6; i++) {
309 *(unsigned int *) (addr + (i * 4)) = p6->insns[i];
310 wmb();
311 __asm__ __volatile__("flush %0"
312 : : "r" (addr + (i * 4)));
313 }
314
315 p6++;
316 }
317}
318
319static void __init pause_patch(void)
320{
321 struct pause_patch_entry *p;
322
323 p = &__pause_3insn_patch;
324 while (p < &__pause_3insn_patch_end) {
325 unsigned long i, addr = p->addr;
326
327 for (i = 0; i < 3; i++) {
328 *(unsigned int *) (addr + (i * 4)) = p->insns[i];
329 wmb();
330 __asm__ __volatile__("flush %0"
331 : : "r" (addr + (i * 4)));
332 }
333
334 p++;
335 }
336}
337
338#ifdef CONFIG_SMP
339void __init boot_cpu_id_too_large(int cpu)
340{
341 prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
342 cpu, NR_CPUS);
343 prom_halt();
344}
345#endif
346
347/* On Ultra, we support all of the v8 capabilities. */
348unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
349 HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
350 HWCAP_SPARC_V9);
351EXPORT_SYMBOL(sparc64_elf_hwcap);
352
353static const char *hwcaps[] = {
354 "flush", "stbar", "swap", "muldiv", "v9",
355 "ultra3", "blkinit", "n2",
356
357 /* These strings are as they appear in the machine description
358 * 'hwcap-list' property for cpu nodes.
359 */
360 "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2",
361 "ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau",
362 "ima", "cspare", "pause", "cbcond",
363};
364
365static const char *crypto_hwcaps[] = {
366 "aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256",
367 "sha512", "mpmul", "montmul", "montsqr", "crc32c",
368};
369
370void cpucap_info(struct seq_file *m)
371{
372 unsigned long caps = sparc64_elf_hwcap;
373 int i, printed = 0;
374
375 seq_puts(m, "cpucaps\t\t: ");
376 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
377 unsigned long bit = 1UL << i;
378 if (caps & bit) {
379 seq_printf(m, "%s%s",
380 printed ? "," : "", hwcaps[i]);
381 printed++;
382 }
383 }
384 if (caps & HWCAP_SPARC_CRYPTO) {
385 unsigned long cfr;
386
387 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
388 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
389 unsigned long bit = 1UL << i;
390 if (cfr & bit) {
391 seq_printf(m, "%s%s",
392 printed ? "," : "", crypto_hwcaps[i]);
393 printed++;
394 }
395 }
396 }
397 seq_putc(m, '\n');
398}
399
400static void __init report_one_hwcap(int *printed, const char *name)
401{
402 if ((*printed) == 0)
403 printk(KERN_INFO "CPU CAPS: [");
404 printk(KERN_CONT "%s%s",
405 (*printed) ? "," : "", name);
406 if (++(*printed) == 8) {
407 printk(KERN_CONT "]\n");
408 *printed = 0;
409 }
410}
411
412static void __init report_crypto_hwcaps(int *printed)
413{
414 unsigned long cfr;
415 int i;
416
417 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
418
419 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
420 unsigned long bit = 1UL << i;
421 if (cfr & bit)
422 report_one_hwcap(printed, crypto_hwcaps[i]);
423 }
424}
425
426static void __init report_hwcaps(unsigned long caps)
427{
428 int i, printed = 0;
429
430 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
431 unsigned long bit = 1UL << i;
432 if (caps & bit)
433 report_one_hwcap(&printed, hwcaps[i]);
434 }
435 if (caps & HWCAP_SPARC_CRYPTO)
436 report_crypto_hwcaps(&printed);
437 if (printed != 0)
438 printk(KERN_CONT "]\n");
439}
440
441static unsigned long __init mdesc_cpu_hwcap_list(void)
442{
443 struct mdesc_handle *hp;
444 unsigned long caps = 0;
445 const char *prop;
446 int len;
447 u64 pn;
448
449 hp = mdesc_grab();
450 if (!hp)
451 return 0;
452
453 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu");
454 if (pn == MDESC_NODE_NULL)
455 goto out;
456
457 prop = mdesc_get_property(hp, pn, "hwcap-list", &len);
458 if (!prop)
459 goto out;
460
461 while (len) {
462 int i, plen;
463
464 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
465 unsigned long bit = 1UL << i;
466
467 if (!strcmp(prop, hwcaps[i])) {
468 caps |= bit;
469 break;
470 }
471 }
472 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
473 if (!strcmp(prop, crypto_hwcaps[i]))
474 caps |= HWCAP_SPARC_CRYPTO;
475 }
476
477 plen = strlen(prop) + 1;
478 prop += plen;
479 len -= plen;
480 }
481
482out:
483 mdesc_release(hp);
484 return caps;
485}
486
487/* This yields a mask that user programs can use to figure out what
488 * instruction set this cpu supports.
489 */
490static void __init init_sparc64_elf_hwcap(void)
491{
492 unsigned long cap = sparc64_elf_hwcap;
493 unsigned long mdesc_caps;
494
495 if (tlb_type == cheetah || tlb_type == cheetah_plus)
496 cap |= HWCAP_SPARC_ULTRA3;
497 else if (tlb_type == hypervisor) {
498 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 ||
499 sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
500 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
501 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
502 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
503 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
504 cap |= HWCAP_SPARC_BLKINIT;
505 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
506 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
507 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
508 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
509 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
510 cap |= HWCAP_SPARC_N2;
511 }
512
513 cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
514
515 mdesc_caps = mdesc_cpu_hwcap_list();
516 if (!mdesc_caps) {
517 if (tlb_type == spitfire)
518 cap |= AV_SPARC_VIS;
519 if (tlb_type == cheetah || tlb_type == cheetah_plus)
520 cap |= AV_SPARC_VIS | AV_SPARC_VIS2;
521 if (tlb_type == cheetah_plus) {
522 unsigned long impl, ver;
523
524 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
525 impl = ((ver >> 32) & 0xffff);
526 if (impl == PANTHER_IMPL)
527 cap |= AV_SPARC_POPC;
528 }
529 if (tlb_type == hypervisor) {
530 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1)
531 cap |= AV_SPARC_ASI_BLK_INIT;
532 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
533 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
534 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
535 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
536 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
537 cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
538 AV_SPARC_ASI_BLK_INIT |
539 AV_SPARC_POPC);
540 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
541 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
542 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
543 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
544 cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
545 AV_SPARC_FMAF);
546 }
547 }
548 sparc64_elf_hwcap = cap | mdesc_caps;
549
550 report_hwcaps(sparc64_elf_hwcap);
551
552 if (sparc64_elf_hwcap & AV_SPARC_POPC)
553 popc_patch();
554 if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
555 pause_patch();
556}
557
558void __init setup_arch(char **cmdline_p)
559{
560 /* Initialize PROM console and command line. */
561 *cmdline_p = prom_getbootargs();
562 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
563 parse_early_param();
564
565 boot_flags_init(*cmdline_p);
566#ifdef CONFIG_EARLYFB
567 if (btext_find_display())
568#endif
569 register_console(&prom_early_console);
570
571 if (tlb_type == hypervisor)
572 printk("ARCH: SUN4V\n");
573 else
574 printk("ARCH: SUN4U\n");
575
576#ifdef CONFIG_DUMMY_CONSOLE
577 conswitchp = &dummy_con;
578#endif
579
580 idprom_init();
581
582 if (!root_flags)
583 root_mountflags &= ~MS_RDONLY;
584 ROOT_DEV = old_decode_dev(root_dev);
585#ifdef CONFIG_BLK_DEV_RAM
586 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
587 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
588 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
589#endif
590
591 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
592
593#ifdef CONFIG_IP_PNP
594 if (!ic_set_manually) {
595 phandle chosen = prom_finddevice("/chosen");
596 u32 cl, sv, gw;
597
598 cl = prom_getintdefault (chosen, "client-ip", 0);
599 sv = prom_getintdefault (chosen, "server-ip", 0);
600 gw = prom_getintdefault (chosen, "gateway-ip", 0);
601 if (cl && sv) {
602 ic_myaddr = cl;
603 ic_servaddr = sv;
604 if (gw)
605 ic_gateway = gw;
606#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
607 ic_proto_enabled = 0;
608#endif
609 }
610 }
611#endif
612
613 /* Get boot processor trap_block[] setup. */
614 init_cur_cpu_trap(current_thread_info());
615
616 paging_init();
617 init_sparc64_elf_hwcap();
618}
619
620extern int stop_a_enabled;
621
622void sun_do_break(void)
623{
624 if (!stop_a_enabled)
625 return;
626
627 prom_printf("\n");
628 flush_user_windows();
629
630 prom_cmdline();
631}
632EXPORT_SYMBOL(sun_do_break);
633
634int stop_a_enabled = 1;
635EXPORT_SYMBOL(stop_a_enabled);
1/*
2 * linux/arch/sparc64/kernel/setup.c
3 *
4 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#include <linux/errno.h>
9#include <linux/sched.h>
10#include <linux/kernel.h>
11#include <linux/mm.h>
12#include <linux/stddef.h>
13#include <linux/unistd.h>
14#include <linux/ptrace.h>
15#include <asm/smp.h>
16#include <linux/user.h>
17#include <linux/screen_info.h>
18#include <linux/delay.h>
19#include <linux/fs.h>
20#include <linux/seq_file.h>
21#include <linux/syscalls.h>
22#include <linux/kdev_t.h>
23#include <linux/major.h>
24#include <linux/string.h>
25#include <linux/init.h>
26#include <linux/inet.h>
27#include <linux/console.h>
28#include <linux/root_dev.h>
29#include <linux/interrupt.h>
30#include <linux/cpu.h>
31#include <linux/initrd.h>
32#include <linux/module.h>
33#include <linux/start_kernel.h>
34
35#include <asm/io.h>
36#include <asm/processor.h>
37#include <asm/oplib.h>
38#include <asm/page.h>
39#include <asm/pgtable.h>
40#include <asm/idprom.h>
41#include <asm/head.h>
42#include <asm/starfire.h>
43#include <asm/mmu_context.h>
44#include <asm/timer.h>
45#include <asm/sections.h>
46#include <asm/setup.h>
47#include <asm/mmu.h>
48#include <asm/ns87303.h>
49#include <asm/btext.h>
50#include <asm/elf.h>
51#include <asm/mdesc.h>
52#include <asm/cacheflush.h>
53
54#ifdef CONFIG_IP_PNP
55#include <net/ipconfig.h>
56#endif
57
58#include "entry.h"
59#include "kernel.h"
60
61/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
62 * operations in asm/ns87303.h
63 */
64DEFINE_SPINLOCK(ns87303_lock);
65EXPORT_SYMBOL(ns87303_lock);
66
67struct screen_info screen_info = {
68 0, 0, /* orig-x, orig-y */
69 0, /* unused */
70 0, /* orig-video-page */
71 0, /* orig-video-mode */
72 128, /* orig-video-cols */
73 0, 0, 0, /* unused, ega_bx, unused */
74 54, /* orig-video-lines */
75 0, /* orig-video-isVGA */
76 16 /* orig-video-points */
77};
78
79static void
80prom_console_write(struct console *con, const char *s, unsigned int n)
81{
82 prom_write(s, n);
83}
84
85/* Exported for mm/init.c:paging_init. */
86unsigned long cmdline_memory_size = 0;
87
88static struct console prom_early_console = {
89 .name = "earlyprom",
90 .write = prom_console_write,
91 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
92 .index = -1,
93};
94
95/*
96 * Process kernel command line switches that are specific to the
97 * SPARC or that require special low-level processing.
98 */
99static void __init process_switch(char c)
100{
101 switch (c) {
102 case 'd':
103 case 's':
104 break;
105 case 'h':
106 prom_printf("boot_flags_init: Halt!\n");
107 prom_halt();
108 break;
109 case 'p':
110 prom_early_console.flags &= ~CON_BOOT;
111 break;
112 case 'P':
113 /* Force UltraSPARC-III P-Cache on. */
114 if (tlb_type != cheetah) {
115 printk("BOOT: Ignoring P-Cache force option.\n");
116 break;
117 }
118 cheetah_pcache_forced_on = 1;
119 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
120 cheetah_enable_pcache();
121 break;
122
123 default:
124 printk("Unknown boot switch (-%c)\n", c);
125 break;
126 }
127}
128
129static void __init boot_flags_init(char *commands)
130{
131 while (*commands) {
132 /* Move to the start of the next "argument". */
133 while (*commands && *commands == ' ')
134 commands++;
135
136 /* Process any command switches, otherwise skip it. */
137 if (*commands == '\0')
138 break;
139 if (*commands == '-') {
140 commands++;
141 while (*commands && *commands != ' ')
142 process_switch(*commands++);
143 continue;
144 }
145 if (!strncmp(commands, "mem=", 4))
146 cmdline_memory_size = memparse(commands + 4, &commands);
147
148 while (*commands && *commands != ' ')
149 commands++;
150 }
151}
152
153extern unsigned short root_flags;
154extern unsigned short root_dev;
155extern unsigned short ram_flags;
156#define RAMDISK_IMAGE_START_MASK 0x07FF
157#define RAMDISK_PROMPT_FLAG 0x8000
158#define RAMDISK_LOAD_FLAG 0x4000
159
160extern int root_mountflags;
161
162char reboot_command[COMMAND_LINE_SIZE];
163
164static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
165
166static void __init per_cpu_patch(void)
167{
168 struct cpuid_patch_entry *p;
169 unsigned long ver;
170 int is_jbus;
171
172 if (tlb_type == spitfire && !this_is_starfire)
173 return;
174
175 is_jbus = 0;
176 if (tlb_type != hypervisor) {
177 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
178 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
179 (ver >> 32UL) == __SERRANO_ID);
180 }
181
182 p = &__cpuid_patch;
183 while (p < &__cpuid_patch_end) {
184 unsigned long addr = p->addr;
185 unsigned int *insns;
186
187 switch (tlb_type) {
188 case spitfire:
189 insns = &p->starfire[0];
190 break;
191 case cheetah:
192 case cheetah_plus:
193 if (is_jbus)
194 insns = &p->cheetah_jbus[0];
195 else
196 insns = &p->cheetah_safari[0];
197 break;
198 case hypervisor:
199 insns = &p->sun4v[0];
200 break;
201 default:
202 prom_printf("Unknown cpu type, halting.\n");
203 prom_halt();
204 }
205
206 *(unsigned int *) (addr + 0) = insns[0];
207 wmb();
208 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
209
210 *(unsigned int *) (addr + 4) = insns[1];
211 wmb();
212 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
213
214 *(unsigned int *) (addr + 8) = insns[2];
215 wmb();
216 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
217
218 *(unsigned int *) (addr + 12) = insns[3];
219 wmb();
220 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
221
222 p++;
223 }
224}
225
226void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start,
227 struct sun4v_1insn_patch_entry *end)
228{
229 while (start < end) {
230 unsigned long addr = start->addr;
231
232 *(unsigned int *) (addr + 0) = start->insn;
233 wmb();
234 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
235
236 start++;
237 }
238}
239
240void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
241 struct sun4v_2insn_patch_entry *end)
242{
243 while (start < end) {
244 unsigned long addr = start->addr;
245
246 *(unsigned int *) (addr + 0) = start->insns[0];
247 wmb();
248 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
249
250 *(unsigned int *) (addr + 4) = start->insns[1];
251 wmb();
252 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
253
254 start++;
255 }
256}
257
258void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
259 struct sun4v_2insn_patch_entry *end)
260{
261 while (start < end) {
262 unsigned long addr = start->addr;
263
264 *(unsigned int *) (addr + 0) = start->insns[0];
265 wmb();
266 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
267
268 *(unsigned int *) (addr + 4) = start->insns[1];
269 wmb();
270 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
271
272 start++;
273 }
274}
275
276static void __init sun4v_patch(void)
277{
278 extern void sun4v_hvapi_init(void);
279
280 if (tlb_type != hypervisor)
281 return;
282
283 sun4v_patch_1insn_range(&__sun4v_1insn_patch,
284 &__sun4v_1insn_patch_end);
285
286 sun4v_patch_2insn_range(&__sun4v_2insn_patch,
287 &__sun4v_2insn_patch_end);
288 if (sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
289 sun4v_chip_type == SUN4V_CHIP_SPARC_SN)
290 sun_m7_patch_2insn_range(&__sun_m7_2insn_patch,
291 &__sun_m7_2insn_patch_end);
292
293 sun4v_hvapi_init();
294}
295
296static void __init popc_patch(void)
297{
298 struct popc_3insn_patch_entry *p3;
299 struct popc_6insn_patch_entry *p6;
300
301 p3 = &__popc_3insn_patch;
302 while (p3 < &__popc_3insn_patch_end) {
303 unsigned long i, addr = p3->addr;
304
305 for (i = 0; i < 3; i++) {
306 *(unsigned int *) (addr + (i * 4)) = p3->insns[i];
307 wmb();
308 __asm__ __volatile__("flush %0"
309 : : "r" (addr + (i * 4)));
310 }
311
312 p3++;
313 }
314
315 p6 = &__popc_6insn_patch;
316 while (p6 < &__popc_6insn_patch_end) {
317 unsigned long i, addr = p6->addr;
318
319 for (i = 0; i < 6; i++) {
320 *(unsigned int *) (addr + (i * 4)) = p6->insns[i];
321 wmb();
322 __asm__ __volatile__("flush %0"
323 : : "r" (addr + (i * 4)));
324 }
325
326 p6++;
327 }
328}
329
330static void __init pause_patch(void)
331{
332 struct pause_patch_entry *p;
333
334 p = &__pause_3insn_patch;
335 while (p < &__pause_3insn_patch_end) {
336 unsigned long i, addr = p->addr;
337
338 for (i = 0; i < 3; i++) {
339 *(unsigned int *) (addr + (i * 4)) = p->insns[i];
340 wmb();
341 __asm__ __volatile__("flush %0"
342 : : "r" (addr + (i * 4)));
343 }
344
345 p++;
346 }
347}
348
349void __init start_early_boot(void)
350{
351 int cpu;
352
353 check_if_starfire();
354 per_cpu_patch();
355 sun4v_patch();
356
357 cpu = hard_smp_processor_id();
358 if (cpu >= NR_CPUS) {
359 prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
360 cpu, NR_CPUS);
361 prom_halt();
362 }
363 current_thread_info()->cpu = cpu;
364
365 prom_init_report();
366 start_kernel();
367}
368
369/* On Ultra, we support all of the v8 capabilities. */
370unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
371 HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
372 HWCAP_SPARC_V9);
373EXPORT_SYMBOL(sparc64_elf_hwcap);
374
375static const char *hwcaps[] = {
376 "flush", "stbar", "swap", "muldiv", "v9",
377 "ultra3", "blkinit", "n2",
378
379 /* These strings are as they appear in the machine description
380 * 'hwcap-list' property for cpu nodes.
381 */
382 "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2",
383 "ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau",
384 "ima", "cspare", "pause", "cbcond", NULL /*reserved for crypto */,
385 "adp",
386};
387
388static const char *crypto_hwcaps[] = {
389 "aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256",
390 "sha512", "mpmul", "montmul", "montsqr", "crc32c",
391};
392
393void cpucap_info(struct seq_file *m)
394{
395 unsigned long caps = sparc64_elf_hwcap;
396 int i, printed = 0;
397
398 seq_puts(m, "cpucaps\t\t: ");
399 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
400 unsigned long bit = 1UL << i;
401 if (hwcaps[i] && (caps & bit)) {
402 seq_printf(m, "%s%s",
403 printed ? "," : "", hwcaps[i]);
404 printed++;
405 }
406 }
407 if (caps & HWCAP_SPARC_CRYPTO) {
408 unsigned long cfr;
409
410 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
411 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
412 unsigned long bit = 1UL << i;
413 if (cfr & bit) {
414 seq_printf(m, "%s%s",
415 printed ? "," : "", crypto_hwcaps[i]);
416 printed++;
417 }
418 }
419 }
420 seq_putc(m, '\n');
421}
422
423static void __init report_one_hwcap(int *printed, const char *name)
424{
425 if ((*printed) == 0)
426 printk(KERN_INFO "CPU CAPS: [");
427 printk(KERN_CONT "%s%s",
428 (*printed) ? "," : "", name);
429 if (++(*printed) == 8) {
430 printk(KERN_CONT "]\n");
431 *printed = 0;
432 }
433}
434
435static void __init report_crypto_hwcaps(int *printed)
436{
437 unsigned long cfr;
438 int i;
439
440 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
441
442 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
443 unsigned long bit = 1UL << i;
444 if (cfr & bit)
445 report_one_hwcap(printed, crypto_hwcaps[i]);
446 }
447}
448
449static void __init report_hwcaps(unsigned long caps)
450{
451 int i, printed = 0;
452
453 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
454 unsigned long bit = 1UL << i;
455 if (hwcaps[i] && (caps & bit))
456 report_one_hwcap(&printed, hwcaps[i]);
457 }
458 if (caps & HWCAP_SPARC_CRYPTO)
459 report_crypto_hwcaps(&printed);
460 if (printed != 0)
461 printk(KERN_CONT "]\n");
462}
463
464static unsigned long __init mdesc_cpu_hwcap_list(void)
465{
466 struct mdesc_handle *hp;
467 unsigned long caps = 0;
468 const char *prop;
469 int len;
470 u64 pn;
471
472 hp = mdesc_grab();
473 if (!hp)
474 return 0;
475
476 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu");
477 if (pn == MDESC_NODE_NULL)
478 goto out;
479
480 prop = mdesc_get_property(hp, pn, "hwcap-list", &len);
481 if (!prop)
482 goto out;
483
484 while (len) {
485 int i, plen;
486
487 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
488 unsigned long bit = 1UL << i;
489
490 if (hwcaps[i] && !strcmp(prop, hwcaps[i])) {
491 caps |= bit;
492 break;
493 }
494 }
495 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
496 if (!strcmp(prop, crypto_hwcaps[i]))
497 caps |= HWCAP_SPARC_CRYPTO;
498 }
499
500 plen = strlen(prop) + 1;
501 prop += plen;
502 len -= plen;
503 }
504
505out:
506 mdesc_release(hp);
507 return caps;
508}
509
510/* This yields a mask that user programs can use to figure out what
511 * instruction set this cpu supports.
512 */
513static void __init init_sparc64_elf_hwcap(void)
514{
515 unsigned long cap = sparc64_elf_hwcap;
516 unsigned long mdesc_caps;
517
518 if (tlb_type == cheetah || tlb_type == cheetah_plus)
519 cap |= HWCAP_SPARC_ULTRA3;
520 else if (tlb_type == hypervisor) {
521 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 ||
522 sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
523 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
524 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
525 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
526 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
527 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
528 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
529 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
530 cap |= HWCAP_SPARC_BLKINIT;
531 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
532 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
533 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
534 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
535 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
536 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
537 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
538 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
539 cap |= HWCAP_SPARC_N2;
540 }
541
542 cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
543
544 mdesc_caps = mdesc_cpu_hwcap_list();
545 if (!mdesc_caps) {
546 if (tlb_type == spitfire)
547 cap |= AV_SPARC_VIS;
548 if (tlb_type == cheetah || tlb_type == cheetah_plus)
549 cap |= AV_SPARC_VIS | AV_SPARC_VIS2;
550 if (tlb_type == cheetah_plus) {
551 unsigned long impl, ver;
552
553 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
554 impl = ((ver >> 32) & 0xffff);
555 if (impl == PANTHER_IMPL)
556 cap |= AV_SPARC_POPC;
557 }
558 if (tlb_type == hypervisor) {
559 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1)
560 cap |= AV_SPARC_ASI_BLK_INIT;
561 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
562 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
563 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
564 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
565 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
566 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
567 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
568 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
569 cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
570 AV_SPARC_ASI_BLK_INIT |
571 AV_SPARC_POPC);
572 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
573 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
574 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
575 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
576 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
577 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
578 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
579 cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
580 AV_SPARC_FMAF);
581 }
582 }
583 sparc64_elf_hwcap = cap | mdesc_caps;
584
585 report_hwcaps(sparc64_elf_hwcap);
586
587 if (sparc64_elf_hwcap & AV_SPARC_POPC)
588 popc_patch();
589 if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
590 pause_patch();
591}
592
593void __init setup_arch(char **cmdline_p)
594{
595 /* Initialize PROM console and command line. */
596 *cmdline_p = prom_getbootargs();
597 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
598 parse_early_param();
599
600 boot_flags_init(*cmdline_p);
601#ifdef CONFIG_EARLYFB
602 if (btext_find_display())
603#endif
604 register_console(&prom_early_console);
605
606 if (tlb_type == hypervisor)
607 printk("ARCH: SUN4V\n");
608 else
609 printk("ARCH: SUN4U\n");
610
611#ifdef CONFIG_DUMMY_CONSOLE
612 conswitchp = &dummy_con;
613#endif
614
615 idprom_init();
616
617 if (!root_flags)
618 root_mountflags &= ~MS_RDONLY;
619 ROOT_DEV = old_decode_dev(root_dev);
620#ifdef CONFIG_BLK_DEV_RAM
621 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
622 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
623 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
624#endif
625
626 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
627
628#ifdef CONFIG_IP_PNP
629 if (!ic_set_manually) {
630 phandle chosen = prom_finddevice("/chosen");
631 u32 cl, sv, gw;
632
633 cl = prom_getintdefault (chosen, "client-ip", 0);
634 sv = prom_getintdefault (chosen, "server-ip", 0);
635 gw = prom_getintdefault (chosen, "gateway-ip", 0);
636 if (cl && sv) {
637 ic_myaddr = cl;
638 ic_servaddr = sv;
639 if (gw)
640 ic_gateway = gw;
641#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
642 ic_proto_enabled = 0;
643#endif
644 }
645 }
646#endif
647
648 /* Get boot processor trap_block[] setup. */
649 init_cur_cpu_trap(current_thread_info());
650
651 paging_init();
652 init_sparc64_elf_hwcap();
653}
654
655extern int stop_a_enabled;
656
657void sun_do_break(void)
658{
659 if (!stop_a_enabled)
660 return;
661
662 prom_printf("\n");
663 flush_user_windows();
664
665 prom_cmdline();
666}
667EXPORT_SYMBOL(sun_do_break);
668
669int stop_a_enabled = 1;
670EXPORT_SYMBOL(stop_a_enabled);