blob: 13785547e435274bb6fa079968a9d516dc25800f [file] [log] [blame]
Adrian Bunkb00dc832008-05-19 16:52:27 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <asm/smp.h>
16#include <linux/user.h>
Jon Smirl894673e2006-07-10 04:44:13 -070017#include <linux/screen_info.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/delay.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#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>
David S. Millerac85fe82011-07-28 23:31:26 -070032#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#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>
David S. Miller5cbc3072007-05-25 15:49:59 -070047#include <asm/ns87303.h>
David S. Millerc57ec522009-11-27 17:33:43 -080048#include <asm/btext.h>
David S. Millerac85fe82011-07-28 23:31:26 -070049#include <asm/elf.h>
50#include <asm/mdesc.h>
David Howellsd550bbd2012-03-28 18:30:03 +010051#include <asm/cacheflush.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53#ifdef CONFIG_IP_PNP
54#include <net/ipconfig.h>
55#endif
56
David S. Miller3d5ae6b2008-03-25 21:51:40 -070057#include "entry.h"
Sam Ravnborg53ae3412008-12-07 00:02:08 -080058#include "kernel.h"
David S. Miller3d5ae6b2008-03-25 21:51:40 -070059
David S. Miller5cbc3072007-05-25 15:49:59 -070060/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
61 * operations in asm/ns87303.h
62 */
63DEFINE_SPINLOCK(ns87303_lock);
Sam Ravnborg917c3662009-01-08 16:58:20 -080064EXPORT_SYMBOL(ns87303_lock);
David S. Miller5cbc3072007-05-25 15:49:59 -070065
Linus Torvalds1da177e2005-04-16 15:20:36 -070066struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070078static void
79prom_console_write(struct console *con, const char *s, unsigned n)
80{
81 prom_write(s, n);
82}
83
Linus Torvalds1da177e2005-04-16 15:20:36 -070084/* Exported for mm/init.c:paging_init. */
85unsigned long cmdline_memory_size = 0;
86
David S. Miller3c62a2d2008-02-17 23:22:50 -080087static struct console prom_early_console = {
88 .name = "earlyprom",
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 .write = prom_console_write,
David S. Millerdb9a7fb2008-04-23 22:22:29 -070090 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 .index = -1,
92};
93
Linus Torvalds1da177e2005-04-16 15:20:36 -070094/*
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':
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 case 's':
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 break;
104 case 'h':
105 prom_printf("boot_flags_init: Halt!\n");
106 prom_halt();
107 break;
108 case 'p':
David S. Miller11032c12011-09-21 12:48:06 -0700109 prom_early_console.flags &= ~CON_BOOT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 break;
David S. Miller816242d2005-05-23 15:52:08 -0700111 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;
Rusty Russell373d4d02013-01-21 17:17:39 +1030118 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
David S. Miller816242d2005-05-23 15:52:08 -0700119 cheetah_enable_pcache();
120 break;
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 default:
123 printk("Unknown boot switch (-%c)\n", c);
124 break;
125 }
126}
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128static 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 }
David S. Millerc73fcc82007-07-20 16:59:26 -0700144 if (!strncmp(commands, "mem=", 4)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 /*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164extern 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
David S. Miller951bc822006-05-31 01:24:02 -0700177void __init per_cpu_patch(void)
David S. Miller92704a12006-02-26 23:27:19 -0800178{
David S. Miller92704a12006-02-26 23:27:19 -0800179 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
David S. Millerd82ace72006-02-09 02:52:44 -0800186 is_jbus = 0;
187 if (tlb_type != hypervisor) {
188 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
David S. Millerebd8c562006-02-17 08:38:06 -0800189 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
190 (ver >> 32UL) == __SERRANO_ID);
David S. Millerd82ace72006-02-09 02:52:44 -0800191 }
David S. Miller92704a12006-02-26 23:27:19 -0800192
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;
David S. Millerd96b8152006-02-04 15:40:53 -0800209 case hypervisor:
210 insns = &p->sun4v[0];
211 break;
David S. Miller92704a12006-02-26 23:27:19 -0800212 default:
213 prom_printf("Unknown cpu type, halting.\n");
214 prom_halt();
Joe Perches6cb79b32011-06-03 14:45:23 +0000215 }
David S. Miller92704a12006-02-26 23:27:19 -0800216
217 *(unsigned int *) (addr + 0) = insns[0];
David S. Miller840aaef2006-02-06 15:52:05 -0800218 wmb();
David S. Miller92704a12006-02-26 23:27:19 -0800219 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
220
221 *(unsigned int *) (addr + 4) = insns[1];
David S. Miller840aaef2006-02-06 15:52:05 -0800222 wmb();
David S. Miller92704a12006-02-26 23:27:19 -0800223 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
224
225 *(unsigned int *) (addr + 8) = insns[2];
David S. Miller840aaef2006-02-06 15:52:05 -0800226 wmb();
David S. Miller92704a12006-02-26 23:27:19 -0800227 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
228
229 *(unsigned int *) (addr + 12) = insns[3];
David S. Miller840aaef2006-02-06 15:52:05 -0800230 wmb();
David S. Miller92704a12006-02-26 23:27:19 -0800231 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
232
233 p++;
234 }
David S. Miller92704a12006-02-26 23:27:19 -0800235}
236
David S. Miller0b641202011-11-17 22:44:58 -0800237void 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
David S. Miller951bc822006-05-31 01:24:02 -0700269void __init sun4v_patch(void)
David S. Miller936f4822006-02-05 21:29:28 -0800270{
David S. Millerc7754d42007-05-15 17:03:54 -0700271 extern void sun4v_hvapi_init(void);
David S. Miller936f4822006-02-05 21:29:28 -0800272
273 if (tlb_type != hypervisor)
274 return;
275
David S. Miller0b641202011-11-17 22:44:58 -0800276 sun4v_patch_1insn_range(&__sun4v_1insn_patch,
277 &__sun4v_1insn_patch_end);
David S. Miller936f4822006-02-05 21:29:28 -0800278
David S. Miller0b641202011-11-17 22:44:58 -0800279 sun4v_patch_2insn_range(&__sun4v_2insn_patch,
280 &__sun4v_2insn_patch_end);
David S. Millerc7754d42007-05-15 17:03:54 -0700281
282 sun4v_hvapi_init();
David S. Miller936f4822006-02-05 21:29:28 -0800283}
284
David S. Milleref7c4d42011-07-29 09:42:07 -0700285static void __init popc_patch(void)
286{
287 struct popc_3insn_patch_entry *p3;
David S. Miller56d205c2011-08-02 20:23:34 -0700288 struct popc_6insn_patch_entry *p6;
David S. Milleref7c4d42011-07-29 09:42:07 -0700289
290 p3 = &__popc_3insn_patch;
291 while (p3 < &__popc_3insn_patch_end) {
David S. Miller56d205c2011-08-02 20:23:34 -0700292 unsigned long i, addr = p3->addr;
David S. Milleref7c4d42011-07-29 09:42:07 -0700293
David S. Miller56d205c2011-08-02 20:23:34 -0700294 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 }
David S. Milleref7c4d42011-07-29 09:42:07 -0700300
301 p3++;
302 }
David S. Miller56d205c2011-08-02 20:23:34 -0700303
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 }
David S. Milleref7c4d42011-07-29 09:42:07 -0700317}
318
David S. Millere9b9eb52012-10-27 23:00:41 -0700319static void __init pause_patch(void)
320{
321 struct pause_patch_entry *p;
322
David S. Miller187818c2012-10-28 13:04:47 -0700323 p = &__pause_3insn_patch;
324 while (p < &__pause_3insn_patch_end) {
David S. Millere9b9eb52012-10-27 23:00:41 -0700325 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
David S. Miller951bc822006-05-31 01:24:02 -0700338#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
David S. Millerac85fe82011-07-28 23:31:26 -0700347/* 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",
David S. Miller6f859c02012-08-16 16:41:04 -0700362 "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",
David S. Millerac85fe82011-07-28 23:31:26 -0700368};
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 }
David S. Miller6f859c02012-08-16 16:41:04 -0700384 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 }
David S. Millerac85fe82011-07-28 23:31:26 -0700397 seq_putc(m, '\n');
398}
399
David S. Miller6f859c02012-08-16 16:41:04 -0700400static 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
David S. Millerac85fe82011-07-28 23:31:26 -0700426static void __init report_hwcaps(unsigned long caps)
427{
428 int i, printed = 0;
429
David S. Millerac85fe82011-07-28 23:31:26 -0700430 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
431 unsigned long bit = 1UL << i;
David S. Miller6f859c02012-08-16 16:41:04 -0700432 if (caps & bit)
433 report_one_hwcap(&printed, hwcaps[i]);
David S. Millerac85fe82011-07-28 23:31:26 -0700434 }
David S. Miller6f859c02012-08-16 16:41:04 -0700435 if (caps & HWCAP_SPARC_CRYPTO)
436 report_crypto_hwcaps(&printed);
437 if (printed != 0)
438 printk(KERN_CONT "]\n");
David S. Millerac85fe82011-07-28 23:31:26 -0700439}
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 }
David S. Miller6f859c02012-08-16 16:41:04 -0700472 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
473 if (!strcmp(prop, crypto_hwcaps[i]))
474 caps |= HWCAP_SPARC_CRYPTO;
475 }
David S. Millerac85fe82011-07-28 23:31:26 -0700476
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 ||
David S. Miller08cefa92011-09-11 10:42:20 -0700500 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
501 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
502 sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
David S. Millerac85fe82011-07-28 23:31:26 -0700503 cap |= HWCAP_SPARC_BLKINIT;
504 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
David S. Miller08cefa92011-09-11 10:42:20 -0700505 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
506 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
507 sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
David S. Millerac85fe82011-07-28 23:31:26 -0700508 cap |= HWCAP_SPARC_N2;
509 }
510
511 cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
512
513 mdesc_caps = mdesc_cpu_hwcap_list();
514 if (!mdesc_caps) {
515 if (tlb_type == spitfire)
516 cap |= AV_SPARC_VIS;
517 if (tlb_type == cheetah || tlb_type == cheetah_plus)
518 cap |= AV_SPARC_VIS | AV_SPARC_VIS2;
David S. Miller1a8e0da2011-08-29 21:14:29 -0700519 if (tlb_type == cheetah_plus) {
520 unsigned long impl, ver;
521
522 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
523 impl = ((ver >> 32) & 0xffff);
524 if (impl == PANTHER_IMPL)
525 cap |= AV_SPARC_POPC;
526 }
David S. Millerac85fe82011-07-28 23:31:26 -0700527 if (tlb_type == hypervisor) {
528 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1)
529 cap |= AV_SPARC_ASI_BLK_INIT;
530 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
David S. Miller08cefa92011-09-11 10:42:20 -0700531 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
532 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
533 sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
David S. Millerac85fe82011-07-28 23:31:26 -0700534 cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
535 AV_SPARC_ASI_BLK_INIT |
536 AV_SPARC_POPC);
David S. Miller08cefa92011-09-11 10:42:20 -0700537 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
538 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
539 sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
David S. Millerac85fe82011-07-28 23:31:26 -0700540 cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
541 AV_SPARC_FMAF);
542 }
543 }
544 sparc64_elf_hwcap = cap | mdesc_caps;
545
546 report_hwcaps(sparc64_elf_hwcap);
David S. Milleref7c4d42011-07-29 09:42:07 -0700547
548 if (sparc64_elf_hwcap & AV_SPARC_POPC)
549 popc_patch();
David S. Millere9b9eb52012-10-27 23:00:41 -0700550 if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
551 pause_patch();
David S. Millerac85fe82011-07-28 23:31:26 -0700552}
553
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554void __init setup_arch(char **cmdline_p)
555{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 /* Initialize PROM console and command line. */
557 *cmdline_p = prom_getbootargs();
Zhao Hongjiang117a0c52013-06-09 16:57:58 +0800558 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
David S. Millerce3b1d42008-03-19 03:54:09 -0700559 parse_early_param();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560
David S. Miller3c62a2d2008-02-17 23:22:50 -0800561 boot_flags_init(*cmdline_p);
David S. Millerc57ec522009-11-27 17:33:43 -0800562#ifdef CONFIG_EARLYFB
563 if (btext_find_display())
564#endif
565 register_console(&prom_early_console);
David S. Miller3c62a2d2008-02-17 23:22:50 -0800566
David S. Miller3a8c0692006-02-09 02:54:54 -0800567 if (tlb_type == hypervisor)
568 printk("ARCH: SUN4V\n");
569 else
570 printk("ARCH: SUN4U\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
572#ifdef CONFIG_DUMMY_CONSOLE
573 conswitchp = &dummy_con;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574#endif
575
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 idprom_init();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
578 if (!root_flags)
579 root_mountflags &= ~MS_RDONLY;
580 ROOT_DEV = old_decode_dev(root_dev);
Andrew Morton467418f2006-03-19 12:46:55 -0800581#ifdef CONFIG_BLK_DEV_RAM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
583 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
584 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
585#endif
586
Al Virof3169642006-01-12 01:05:42 -0800587 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
589#ifdef CONFIG_IP_PNP
590 if (!ic_set_manually) {
Andres Salomon8d125562010-10-08 14:18:11 -0700591 phandle chosen = prom_finddevice("/chosen");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 u32 cl, sv, gw;
593
594 cl = prom_getintdefault (chosen, "client-ip", 0);
595 sv = prom_getintdefault (chosen, "server-ip", 0);
596 gw = prom_getintdefault (chosen, "gateway-ip", 0);
597 if (cl && sv) {
598 ic_myaddr = cl;
599 ic_servaddr = sv;
600 if (gw)
601 ic_gateway = gw;
602#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
603 ic_proto_enabled = 0;
604#endif
605 }
606 }
607#endif
608
David S. Miller56fb4df2006-02-26 23:24:22 -0800609 /* Get boot processor trap_block[] setup. */
David S. Miller72aff532006-02-17 01:29:17 -0800610 init_cur_cpu_trap(current_thread_info());
David S. Miller52845cd2006-02-26 23:32:33 -0800611
612 paging_init();
David S. Millerac85fe82011-07-28 23:31:26 -0700613 init_sparc64_elf_hwcap();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614}
615
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616extern int stop_a_enabled;
617
618void sun_do_break(void)
619{
620 if (!stop_a_enabled)
621 return;
622
623 prom_printf("\n");
624 flush_user_windows();
625
626 prom_cmdline();
627}
Sam Ravnborg917c3662009-01-08 16:58:20 -0800628EXPORT_SYMBOL(sun_do_break);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630int stop_a_enabled = 1;
Sam Ravnborg917c3662009-01-08 16:58:20 -0800631EXPORT_SYMBOL(stop_a_enabled);