1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25#include <linux/module.h>
26#include <linux/init.h>
27
28#include <linux/acpi.h>
29#include <linux/bootmem.h>
30#include <linux/console.h>
31#include <linux/delay.h>
32#include <linux/kernel.h>
33#include <linux/reboot.h>
34#include <linux/sched.h>
35#include <linux/seq_file.h>
36#include <linux/string.h>
37#include <linux/threads.h>
38#include <linux/screen_info.h>
39#include <linux/dmi.h>
40#include <linux/serial.h>
41#include <linux/serial_core.h>
42#include <linux/efi.h>
43#include <linux/initrd.h>
44#include <linux/pm.h>
45#include <linux/cpufreq.h>
46#include <linux/kexec.h>
47#include <linux/crash_dump.h>
48
49#include <asm/machvec.h>
50#include <asm/mca.h>
51#include <asm/meminit.h>
52#include <asm/page.h>
53#include <asm/patch.h>
54#include <asm/pgtable.h>
55#include <asm/processor.h>
56#include <asm/sal.h>
57#include <asm/sections.h>
58#include <asm/setup.h>
59#include <asm/smp.h>
60#include <asm/tlbflush.h>
61#include <asm/unistd.h>
62#include <asm/hpsim.h>
63
64#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
65# error "struct cpuinfo_ia64 too big!"
66#endif
67
68#ifdef CONFIG_SMP
69unsigned long __per_cpu_offset[NR_CPUS];
70EXPORT_SYMBOL(__per_cpu_offset);
71#endif
72
73DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info);
74EXPORT_SYMBOL(ia64_cpu_info);
75DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
76#ifdef CONFIG_SMP
77EXPORT_SYMBOL(local_per_cpu_offset);
78#endif
79unsigned long ia64_cycles_per_usec;
80struct ia64_boot_param *ia64_boot_param;
81struct screen_info screen_info;
82unsigned long vga_console_iobase;
83unsigned long vga_console_membase;
84
85static struct resource data_resource = {
86 .name = "Kernel data",
87 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
88};
89
90static struct resource code_resource = {
91 .name = "Kernel code",
92 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
93};
94
95static struct resource bss_resource = {
96 .name = "Kernel bss",
97 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
98};
99
100unsigned long ia64_max_cacheline_size;
101
102unsigned long ia64_iobase;
103EXPORT_SYMBOL(ia64_iobase);
104struct io_space io_space[MAX_IO_SPACES];
105EXPORT_SYMBOL(io_space);
106unsigned int num_io_spaces;
107
108
109
110
111
112#define I_CACHE_STRIDE_SHIFT 5
113unsigned long ia64_i_cache_stride_shift = ~0;
114
115
116
117
118
119#define CACHE_STRIDE_SHIFT 5
120unsigned long ia64_cache_stride_shift = ~0;
121
122
123
124
125
126
127
128
129
130
131unsigned long ia64_max_iommu_merge_mask = ~0UL;
132EXPORT_SYMBOL(ia64_max_iommu_merge_mask);
133
134
135
136
137struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata;
138int num_rsvd_regions __initdata;
139
140
141
142
143
144
145
146
147int __init
148filter_rsvd_memory (u64 start, u64 end, void *arg)
149{
150 u64 range_start, range_end, prev_start;
151 void (*func)(unsigned long, unsigned long, int);
152 int i;
153
154#if IGNORE_PFN0
155 if (start == PAGE_OFFSET) {
156 printk(KERN_WARNING "warning: skipping physical page 0\n");
157 start += PAGE_SIZE;
158 if (start >= end) return 0;
159 }
160#endif
161
162
163
164 prev_start = PAGE_OFFSET;
165 func = arg;
166
167 for (i = 0; i < num_rsvd_regions; ++i) {
168 range_start = max(start, prev_start);
169 range_end = min(end, rsvd_region[i].start);
170
171 if (range_start < range_end)
172 call_pernode_memory(__pa(range_start), range_end - range_start, func);
173
174
175 if (range_end == end) return 0;
176
177 prev_start = rsvd_region[i].end;
178 }
179
180 return 0;
181}
182
183
184
185
186
187int __init
188filter_memory(u64 start, u64 end, void *arg)
189{
190 void (*func)(unsigned long, unsigned long, int);
191
192#if IGNORE_PFN0
193 if (start == PAGE_OFFSET) {
194 printk(KERN_WARNING "warning: skipping physical page 0\n");
195 start += PAGE_SIZE;
196 if (start >= end)
197 return 0;
198 }
199#endif
200 func = arg;
201 if (start < end)
202 call_pernode_memory(__pa(start), end - start, func);
203 return 0;
204}
205
206static void __init
207sort_regions (struct rsvd_region *rsvd_region, int max)
208{
209 int j;
210
211
212 while (max--) {
213 for (j = 0; j < max; ++j) {
214 if (rsvd_region[j].start > rsvd_region[j+1].start) {
215 struct rsvd_region tmp;
216 tmp = rsvd_region[j];
217 rsvd_region[j] = rsvd_region[j + 1];
218 rsvd_region[j + 1] = tmp;
219 }
220 }
221 }
222}
223
224
225static int __init
226merge_regions (struct rsvd_region *rsvd_region, int max)
227{
228 int i;
229 for (i = 1; i < max; ++i) {
230 if (rsvd_region[i].start >= rsvd_region[i-1].end)
231 continue;
232 if (rsvd_region[i].end > rsvd_region[i-1].end)
233 rsvd_region[i-1].end = rsvd_region[i].end;
234 --max;
235 memmove(&rsvd_region[i], &rsvd_region[i+1],
236 (max - i) * sizeof(struct rsvd_region));
237 }
238 return max;
239}
240
241
242
243
244static int __init register_memory(void)
245{
246 code_resource.start = ia64_tpa(_text);
247 code_resource.end = ia64_tpa(_etext) - 1;
248 data_resource.start = ia64_tpa(_etext);
249 data_resource.end = ia64_tpa(_edata) - 1;
250 bss_resource.start = ia64_tpa(__bss_start);
251 bss_resource.end = ia64_tpa(_end) - 1;
252 efi_initialize_iomem_resources(&code_resource, &data_resource,
253 &bss_resource);
254
255 return 0;
256}
257
258__initcall(register_memory);
259
260
261#ifdef CONFIG_KEXEC
262
263
264
265
266
267
268
269
270
271
272
273static int __init check_crashkernel_memory(unsigned long pbase, size_t size)
274{
275 if (ia64_platform_is("sn2") || ia64_platform_is("uv"))
276 return 1;
277 else
278 return pbase < (1UL << 32);
279}
280
281static void __init setup_crashkernel(unsigned long total, int *n)
282{
283 unsigned long long base = 0, size = 0;
284 int ret;
285
286 ret = parse_crashkernel(boot_command_line, total,
287 &size, &base);
288 if (ret == 0 && size > 0) {
289 if (!base) {
290 sort_regions(rsvd_region, *n);
291 *n = merge_regions(rsvd_region, *n);
292 base = kdump_find_rsvd_region(size,
293 rsvd_region, *n);
294 }
295
296 if (!check_crashkernel_memory(base, size)) {
297 pr_warning("crashkernel: There would be kdump memory "
298 "at %ld GB but this is unusable because it "
299 "must\nbe below 4 GB. Change the memory "
300 "configuration of the machine.\n",
301 (unsigned long)(base >> 30));
302 return;
303 }
304
305 if (base != ~0UL) {
306 printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
307 "for crashkernel (System RAM: %ldMB)\n",
308 (unsigned long)(size >> 20),
309 (unsigned long)(base >> 20),
310 (unsigned long)(total >> 20));
311 rsvd_region[*n].start =
312 (unsigned long)__va(base);
313 rsvd_region[*n].end =
314 (unsigned long)__va(base + size);
315 (*n)++;
316 crashk_res.start = base;
317 crashk_res.end = base + size - 1;
318 }
319 }
320 efi_memmap_res.start = ia64_boot_param->efi_memmap;
321 efi_memmap_res.end = efi_memmap_res.start +
322 ia64_boot_param->efi_memmap_size;
323 boot_param_res.start = __pa(ia64_boot_param);
324 boot_param_res.end = boot_param_res.start +
325 sizeof(*ia64_boot_param);
326}
327#else
328static inline void __init setup_crashkernel(unsigned long total, int *n)
329{}
330#endif
331
332
333
334
335
336
337
338
339void __init
340reserve_memory (void)
341{
342 int n = 0;
343 unsigned long total_memory;
344
345
346
347
348 rsvd_region[n].start = (unsigned long) ia64_boot_param;
349 rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param);
350 n++;
351
352 rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap);
353 rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size;
354 n++;
355
356 rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line);
357 rsvd_region[n].end = (rsvd_region[n].start
358 + strlen(__va(ia64_boot_param->command_line)) + 1);
359 n++;
360
361 rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START);
362 rsvd_region[n].end = (unsigned long) ia64_imva(_end);
363 n++;
364
365#ifdef CONFIG_BLK_DEV_INITRD
366 if (ia64_boot_param->initrd_start) {
367 rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start);
368 rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size;
369 n++;
370 }
371#endif
372
373#ifdef CONFIG_CRASH_DUMP
374 if (reserve_elfcorehdr(&rsvd_region[n].start,
375 &rsvd_region[n].end) == 0)
376 n++;
377#endif
378
379 total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
380 n++;
381
382 setup_crashkernel(total_memory, &n);
383
384
385 rsvd_region[n].start = ~0UL;
386 rsvd_region[n].end = ~0UL;
387 n++;
388
389 num_rsvd_regions = n;
390 BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n);
391
392 sort_regions(rsvd_region, num_rsvd_regions);
393 num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions);
394}
395
396
397
398
399
400
401
402
403void __init
404find_initrd (void)
405{
406#ifdef CONFIG_BLK_DEV_INITRD
407 if (ia64_boot_param->initrd_start) {
408 initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start);
409 initrd_end = initrd_start+ia64_boot_param->initrd_size;
410
411 printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n",
412 initrd_start, ia64_boot_param->initrd_size);
413 }
414#endif
415}
416
417static void __init
418io_port_init (void)
419{
420 unsigned long phys_iobase;
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437 phys_iobase = efi_get_iobase();
438 if (!phys_iobase) {
439 phys_iobase = ia64_get_kr(IA64_KR_IO_BASE);
440 printk(KERN_INFO "No I/O port range found in EFI memory map, "
441 "falling back to AR.KR0 (0x%lx)\n", phys_iobase);
442 }
443 ia64_iobase = (unsigned long) ioremap(phys_iobase, 0);
444 ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase));
445
446
447 io_space[0].mmio_base = ia64_iobase;
448 io_space[0].sparse = 1;
449 num_io_spaces = 1;
450}
451
452
453
454
455
456
457
458
459
460
461static inline int __init
462early_console_setup (char *cmdline)
463{
464 int earlycons = 0;
465
466#ifdef CONFIG_SERIAL_SGI_L1_CONSOLE
467 {
468 extern int sn_serial_console_early_setup(void);
469 if (!sn_serial_console_early_setup())
470 earlycons++;
471 }
472#endif
473#ifdef CONFIG_EFI_PCDP
474 if (!efi_setup_pcdp_console(cmdline))
475 earlycons++;
476#endif
477 if (!simcons_register())
478 earlycons++;
479
480 return (earlycons) ? 0 : -1;
481}
482
483static inline void
484mark_bsp_online (void)
485{
486#ifdef CONFIG_SMP
487
488 set_cpu_online(smp_processor_id(), true);
489#endif
490}
491
492static __initdata int nomca;
493static __init int setup_nomca(char *s)
494{
495 nomca = 1;
496 return 0;
497}
498early_param("nomca", setup_nomca);
499
500#ifdef CONFIG_CRASH_DUMP
501int __init reserve_elfcorehdr(u64 *start, u64 *end)
502{
503 u64 length;
504
505
506
507
508
509
510
511 if (!is_vmcore_usable())
512 return -EINVAL;
513
514 if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) {
515 vmcore_unusable();
516 return -EINVAL;
517 }
518
519 *start = (unsigned long)__va(elfcorehdr_addr);
520 *end = *start + length;
521 return 0;
522}
523
524#endif
525
526void __init
527setup_arch (char **cmdline_p)
528{
529 unw_init();
530
531 ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
532
533 *cmdline_p = __va(ia64_boot_param->command_line);
534 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
535
536 efi_init();
537 io_port_init();
538
539#ifdef CONFIG_IA64_GENERIC
540
541
542
543
544
545 machvec_init_from_cmdline(*cmdline_p);
546#endif
547
548 parse_early_param();
549
550 if (early_console_setup(*cmdline_p) == 0)
551 mark_bsp_online();
552
553#ifdef CONFIG_ACPI
554
555 acpi_table_init();
556 early_acpi_boot_init();
557# ifdef CONFIG_ACPI_NUMA
558 acpi_numa_init();
559 acpi_numa_fixup();
560# ifdef CONFIG_ACPI_HOTPLUG_CPU
561 prefill_possible_map();
562# endif
563 per_cpu_scan_finalize((cpumask_weight(&early_cpu_possible_map) == 0 ?
564 32 : cpumask_weight(&early_cpu_possible_map)),
565 additional_cpus > 0 ? additional_cpus : 0);
566# endif
567#endif
568
569#ifdef CONFIG_SMP
570 smp_build_cpu_map();
571#endif
572 find_memory();
573
574
575 ia64_sal_init(__va(efi.sal_systab));
576
577#ifdef CONFIG_ITANIUM
578 ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist);
579#else
580 {
581 unsigned long num_phys_stacked;
582
583 if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96)
584 ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist);
585 }
586#endif
587
588#ifdef CONFIG_SMP
589 cpu_physical_id(0) = hard_smp_processor_id();
590#endif
591
592 cpu_init();
593 mmu_context_init();
594
595#ifdef CONFIG_VT
596 if (!conswitchp) {
597# if defined(CONFIG_DUMMY_CONSOLE)
598 conswitchp = &dummy_con;
599# endif
600# if defined(CONFIG_VGA_CONSOLE)
601
602
603
604
605
606
607 if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
608 conswitchp = &vga_con;
609# endif
610 }
611#endif
612
613
614 if (!nomca)
615 ia64_mca_init();
616
617 platform_setup(cmdline_p);
618#ifndef CONFIG_IA64_HP_SIM
619 check_sal_cache_flush();
620#endif
621 paging_init();
622}
623
624
625
626
627static int
628show_cpuinfo (struct seq_file *m, void *v)
629{
630#ifdef CONFIG_SMP
631# define lpj c->loops_per_jiffy
632# define cpunum c->cpu
633#else
634# define lpj loops_per_jiffy
635# define cpunum 0
636#endif
637 static struct {
638 unsigned long mask;
639 const char *feature_name;
640 } feature_bits[] = {
641 { 1UL << 0, "branchlong" },
642 { 1UL << 1, "spontaneous deferral"},
643 { 1UL << 2, "16-byte atomic ops" }
644 };
645 char features[128], *cp, *sep;
646 struct cpuinfo_ia64 *c = v;
647 unsigned long mask;
648 unsigned long proc_freq;
649 int i, size;
650
651 mask = c->features;
652
653
654 memcpy(features, "standard", 9);
655 cp = features;
656 size = sizeof(features);
657 sep = "";
658 for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) {
659 if (mask & feature_bits[i].mask) {
660 cp += snprintf(cp, size, "%s%s", sep,
661 feature_bits[i].feature_name),
662 sep = ", ";
663 mask &= ~feature_bits[i].mask;
664 size = sizeof(features) - (cp - features);
665 }
666 }
667 if (mask && size > 1) {
668
669 snprintf(cp, size, "%s0x%lx", sep, mask);
670 }
671
672 proc_freq = cpufreq_quick_get(cpunum);
673 if (!proc_freq)
674 proc_freq = c->proc_freq / 1000;
675
676 seq_printf(m,
677 "processor : %d\n"
678 "vendor : %s\n"
679 "arch : IA-64\n"
680 "family : %u\n"
681 "model : %u\n"
682 "model name : %s\n"
683 "revision : %u\n"
684 "archrev : %u\n"
685 "features : %s\n"
686 "cpu number : %lu\n"
687 "cpu regs : %u\n"
688 "cpu MHz : %lu.%03lu\n"
689 "itc MHz : %lu.%06lu\n"
690 "BogoMIPS : %lu.%02lu\n",
691 cpunum, c->vendor, c->family, c->model,
692 c->model_name, c->revision, c->archrev,
693 features, c->ppn, c->number,
694 proc_freq / 1000, proc_freq % 1000,
695 c->itc_freq / 1000000, c->itc_freq % 1000000,
696 lpj*HZ/500000, (lpj*HZ/5000) % 100);
697#ifdef CONFIG_SMP
698 seq_printf(m, "siblings : %u\n",
699 cpumask_weight(&cpu_core_map[cpunum]));
700 if (c->socket_id != -1)
701 seq_printf(m, "physical id: %u\n", c->socket_id);
702 if (c->threads_per_core > 1 || c->cores_per_socket > 1)
703 seq_printf(m,
704 "core id : %u\n"
705 "thread id : %u\n",
706 c->core_id, c->thread_id);
707#endif
708 seq_printf(m,"\n");
709
710 return 0;
711}
712
713static void *
714c_start (struct seq_file *m, loff_t *pos)
715{
716#ifdef CONFIG_SMP
717 while (*pos < nr_cpu_ids && !cpu_online(*pos))
718 ++*pos;
719#endif
720 return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL;
721}
722
723static void *
724c_next (struct seq_file *m, void *v, loff_t *pos)
725{
726 ++*pos;
727 return c_start(m, pos);
728}
729
730static void
731c_stop (struct seq_file *m, void *v)
732{
733}
734
735const struct seq_operations cpuinfo_op = {
736 .start = c_start,
737 .next = c_next,
738 .stop = c_stop,
739 .show = show_cpuinfo
740};
741
742#define MAX_BRANDS 8
743static char brandname[MAX_BRANDS][128];
744
745static char *
746get_model_name(__u8 family, __u8 model)
747{
748 static int overflow;
749 char brand[128];
750 int i;
751
752 memcpy(brand, "Unknown", 8);
753 if (ia64_pal_get_brand_info(brand)) {
754 if (family == 0x7)
755 memcpy(brand, "Merced", 7);
756 else if (family == 0x1f) switch (model) {
757 case 0: memcpy(brand, "McKinley", 9); break;
758 case 1: memcpy(brand, "Madison", 8); break;
759 case 2: memcpy(brand, "Madison up to 9M cache", 23); break;
760 }
761 }
762 for (i = 0; i < MAX_BRANDS; i++)
763 if (strcmp(brandname[i], brand) == 0)
764 return brandname[i];
765 for (i = 0; i < MAX_BRANDS; i++)
766 if (brandname[i][0] == '\0')
767 return strcpy(brandname[i], brand);
768 if (overflow++ == 0)
769 printk(KERN_ERR
770 "%s: Table overflow. Some processor model information will be missing\n",
771 __func__);
772 return "Unknown";
773}
774
775static void
776identify_cpu (struct cpuinfo_ia64 *c)
777{
778 union {
779 unsigned long bits[5];
780 struct {
781
782 char vendor[16];
783
784
785 u64 ppn;
786
787
788 unsigned number : 8;
789 unsigned revision : 8;
790 unsigned model : 8;
791 unsigned family : 8;
792 unsigned archrev : 8;
793 unsigned reserved : 24;
794
795
796 u64 features;
797 } field;
798 } cpuid;
799 pal_vm_info_1_u_t vm1;
800 pal_vm_info_2_u_t vm2;
801 pal_status_t status;
802 unsigned long impl_va_msb = 50, phys_addr_size = 44;
803 int i;
804 for (i = 0; i < 5; ++i)
805 cpuid.bits[i] = ia64_get_cpuid(i);
806
807 memcpy(c->vendor, cpuid.field.vendor, 16);
808#ifdef CONFIG_SMP
809 c->cpu = smp_processor_id();
810
811
812
813
814 c->threads_per_core = c->cores_per_socket = c->num_log = 1;
815 c->socket_id = -1;
816
817 identify_siblings(c);
818
819 if (c->threads_per_core > smp_num_siblings)
820 smp_num_siblings = c->threads_per_core;
821#endif
822 c->ppn = cpuid.field.ppn;
823 c->number = cpuid.field.number;
824 c->revision = cpuid.field.revision;
825 c->model = cpuid.field.model;
826 c->family = cpuid.field.family;
827 c->archrev = cpuid.field.archrev;
828 c->features = cpuid.field.features;
829 c->model_name = get_model_name(c->family, c->model);
830
831 status = ia64_pal_vm_summary(&vm1, &vm2);
832 if (status == PAL_STATUS_SUCCESS) {
833 impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb;
834 phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size;
835 }
836 c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1));
837 c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1));
838}
839
840
841
842
843
844
845
846
847static void
848get_cache_info(void)
849{
850 unsigned long line_size, max = 1;
851 unsigned long l, levels, unique_caches;
852 pal_cache_config_info_t cci;
853 long status;
854
855 status = ia64_pal_cache_summary(&levels, &unique_caches);
856 if (status != 0) {
857 printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n",
858 __func__, status);
859 max = SMP_CACHE_BYTES;
860
861 ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
862
863 ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
864 goto out;
865 }
866
867 for (l = 0; l < levels; ++l) {
868
869 status = ia64_pal_cache_config_info(l, 2, &cci);
870 if (status != 0) {
871 printk(KERN_ERR "%s: ia64_pal_cache_config_info"
872 "(l=%lu, 2) failed (status=%ld)\n",
873 __func__, l, status);
874 max = SMP_CACHE_BYTES;
875
876 cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
877
878 ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
879 cci.pcci_unified = 1;
880 } else {
881 if (cci.pcci_stride < ia64_cache_stride_shift)
882 ia64_cache_stride_shift = cci.pcci_stride;
883
884 line_size = 1 << cci.pcci_line_size;
885 if (line_size > max)
886 max = line_size;
887 }
888
889 if (!cci.pcci_unified) {
890
891 status = ia64_pal_cache_config_info(l, 1, &cci);
892 if (status != 0) {
893 printk(KERN_ERR "%s: ia64_pal_cache_config_info"
894 "(l=%lu, 1) failed (status=%ld)\n",
895 __func__, l, status);
896
897 cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
898 }
899 }
900 if (cci.pcci_stride < ia64_i_cache_stride_shift)
901 ia64_i_cache_stride_shift = cci.pcci_stride;
902 }
903 out:
904 if (max > ia64_max_cacheline_size)
905 ia64_max_cacheline_size = max;
906}
907
908
909
910
911
912void
913cpu_init (void)
914{
915 extern void ia64_mmu_init(void *);
916 static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG;
917 unsigned long num_phys_stacked;
918 pal_vm_info_2_u_t vmi;
919 unsigned int max_ctx;
920 struct cpuinfo_ia64 *cpu_info;
921 void *cpu_data;
922
923 cpu_data = per_cpu_init();
924#ifdef CONFIG_SMP
925
926
927
928
929 if (smp_processor_id() == 0) {
930 cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0));
931 cpumask_set_cpu(0, &cpu_core_map[0]);
932 } else {
933
934
935
936
937
938
939
940 ia64_set_kr(IA64_KR_PER_CPU_DATA,
941 ia64_tpa(cpu_data) - (long) __per_cpu_start);
942 }
943#endif
944
945 get_cache_info();
946
947
948
949
950
951
952
953 cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start);
954 identify_cpu(cpu_info);
955
956#ifdef CONFIG_MCKINLEY
957 {
958# define FEATURE_SET 16
959 struct ia64_pal_retval iprv;
960
961 if (cpu_info->family == 0x1f) {
962 PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0);
963 if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80))
964 PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES,
965 (iprv.v1 | 0x80), FEATURE_SET, 0);
966 }
967 }
968#endif
969
970
971 memset(task_pt_regs(current), 0, sizeof(struct pt_regs));
972
973 ia64_set_kr(IA64_KR_FPU_OWNER, 0);
974
975
976
977
978
979
980
981
982 ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page)));
983
984
985
986
987
988
989
990
991
992
993 ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR
994 | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC));
995 atomic_inc(&init_mm.mm_count);
996 current->active_mm = &init_mm;
997 BUG_ON(current->mm);
998
999 ia64_mmu_init(ia64_imva(cpu_data));
1000 ia64_mca_cpu_init(ia64_imva(cpu_data));
1001
1002
1003 ia64_set_itc(0);
1004
1005
1006 ia64_set_itv(1 << 16);
1007 ia64_set_lrr0(1 << 16);
1008 ia64_set_lrr1(1 << 16);
1009 ia64_setreg(_IA64_REG_CR_PMV, 1 << 16);
1010 ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16);
1011
1012
1013 ia64_setreg(_IA64_REG_CR_TPR, 0);
1014
1015
1016 while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR)
1017 ia64_eoi();
1018
1019#ifdef CONFIG_SMP
1020 normal_xtp();
1021#endif
1022
1023
1024 if (ia64_pal_vm_summary(NULL, &vmi) == 0) {
1025 max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1;
1026 setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL);
1027 } else {
1028 printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n");
1029 max_ctx = (1U << 15) - 1;
1030 }
1031 while (max_ctx < ia64_ctx.max_ctx) {
1032 unsigned int old = ia64_ctx.max_ctx;
1033 if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old)
1034 break;
1035 }
1036
1037 if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) {
1038 printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical "
1039 "stacked regs\n");
1040 num_phys_stacked = 96;
1041 }
1042
1043 if (num_phys_stacked > max_num_phys_stacked) {
1044 ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8);
1045 max_num_phys_stacked = num_phys_stacked;
1046 }
1047 platform_cpu_init();
1048}
1049
1050void __init
1051check_bugs (void)
1052{
1053 ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles,
1054 (unsigned long) __end___mckinley_e9_bundles);
1055}
1056
1057static int __init run_dmi_scan(void)
1058{
1059 dmi_scan_machine();
1060 dmi_memdev_walk();
1061 dmi_set_dump_stack_arch_desc();
1062 return 0;
1063}
1064core_initcall(run_dmi_scan);
1065