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26#include <linux/module.h>
27#include <linux/init.h>
28
29#include <linux/acpi.h>
30#include <linux/console.h>
31#include <linux/delay.h>
32#include <linux/cpu.h>
33#include <linux/kernel.h>
34#include <linux/memblock.h>
35#include <linux/reboot.h>
36#include <linux/sched/mm.h>
37#include <linux/sched/clock.h>
38#include <linux/sched/task_stack.h>
39#include <linux/seq_file.h>
40#include <linux/string.h>
41#include <linux/threads.h>
42#include <linux/screen_info.h>
43#include <linux/dmi.h>
44#include <linux/serial.h>
45#include <linux/serial_core.h>
46#include <linux/efi.h>
47#include <linux/initrd.h>
48#include <linux/pm.h>
49#include <linux/cpufreq.h>
50#include <linux/kexec.h>
51#include <linux/crash_dump.h>
52
53#include <asm/machvec.h>
54#include <asm/mca.h>
55#include <asm/meminit.h>
56#include <asm/page.h>
57#include <asm/patch.h>
58#include <asm/pgtable.h>
59#include <asm/processor.h>
60#include <asm/sal.h>
61#include <asm/sections.h>
62#include <asm/setup.h>
63#include <asm/smp.h>
64#include <asm/tlbflush.h>
65#include <asm/unistd.h>
66#include <asm/hpsim.h>
67
68#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
69# error "struct cpuinfo_ia64 too big!"
70#endif
71
72#ifdef CONFIG_SMP
73unsigned long __per_cpu_offset[NR_CPUS];
74EXPORT_SYMBOL(__per_cpu_offset);
75#endif
76
77DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info);
78EXPORT_SYMBOL(ia64_cpu_info);
79DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
80#ifdef CONFIG_SMP
81EXPORT_SYMBOL(local_per_cpu_offset);
82#endif
83unsigned long ia64_cycles_per_usec;
84struct ia64_boot_param *ia64_boot_param;
85struct screen_info screen_info;
86unsigned long vga_console_iobase;
87unsigned long vga_console_membase;
88
89static struct resource data_resource = {
90 .name = "Kernel data",
91 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
92};
93
94static struct resource code_resource = {
95 .name = "Kernel code",
96 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
97};
98
99static struct resource bss_resource = {
100 .name = "Kernel bss",
101 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
102};
103
104unsigned long ia64_max_cacheline_size;
105
106unsigned long ia64_iobase;
107EXPORT_SYMBOL(ia64_iobase);
108struct io_space io_space[MAX_IO_SPACES];
109EXPORT_SYMBOL(io_space);
110unsigned int num_io_spaces;
111
112
113
114
115
116#define I_CACHE_STRIDE_SHIFT 5
117unsigned long ia64_i_cache_stride_shift = ~0;
118
119
120
121
122
123#define CACHE_STRIDE_SHIFT 5
124unsigned long ia64_cache_stride_shift = ~0;
125
126
127
128
129struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata;
130int num_rsvd_regions __initdata;
131
132
133
134
135
136
137
138
139int __init
140filter_rsvd_memory (u64 start, u64 end, void *arg)
141{
142 u64 range_start, range_end, prev_start;
143 void (*func)(unsigned long, unsigned long, int);
144 int i;
145
146#if IGNORE_PFN0
147 if (start == PAGE_OFFSET) {
148 printk(KERN_WARNING "warning: skipping physical page 0\n");
149 start += PAGE_SIZE;
150 if (start >= end) return 0;
151 }
152#endif
153
154
155
156 prev_start = PAGE_OFFSET;
157 func = arg;
158
159 for (i = 0; i < num_rsvd_regions; ++i) {
160 range_start = max(start, prev_start);
161 range_end = min(end, rsvd_region[i].start);
162
163 if (range_start < range_end)
164 call_pernode_memory(__pa(range_start), range_end - range_start, func);
165
166
167 if (range_end == end) return 0;
168
169 prev_start = rsvd_region[i].end;
170 }
171
172 return 0;
173}
174
175
176
177
178
179int __init
180filter_memory(u64 start, u64 end, void *arg)
181{
182 void (*func)(unsigned long, unsigned long, int);
183
184#if IGNORE_PFN0
185 if (start == PAGE_OFFSET) {
186 printk(KERN_WARNING "warning: skipping physical page 0\n");
187 start += PAGE_SIZE;
188 if (start >= end)
189 return 0;
190 }
191#endif
192 func = arg;
193 if (start < end)
194 call_pernode_memory(__pa(start), end - start, func);
195 return 0;
196}
197
198static void __init
199sort_regions (struct rsvd_region *rsvd_region, int max)
200{
201 int j;
202
203
204 while (max--) {
205 for (j = 0; j < max; ++j) {
206 if (rsvd_region[j].start > rsvd_region[j+1].start) {
207 struct rsvd_region tmp;
208 tmp = rsvd_region[j];
209 rsvd_region[j] = rsvd_region[j + 1];
210 rsvd_region[j + 1] = tmp;
211 }
212 }
213 }
214}
215
216
217static int __init
218merge_regions (struct rsvd_region *rsvd_region, int max)
219{
220 int i;
221 for (i = 1; i < max; ++i) {
222 if (rsvd_region[i].start >= rsvd_region[i-1].end)
223 continue;
224 if (rsvd_region[i].end > rsvd_region[i-1].end)
225 rsvd_region[i-1].end = rsvd_region[i].end;
226 --max;
227 memmove(&rsvd_region[i], &rsvd_region[i+1],
228 (max - i) * sizeof(struct rsvd_region));
229 }
230 return max;
231}
232
233
234
235
236static int __init register_memory(void)
237{
238 code_resource.start = ia64_tpa(_text);
239 code_resource.end = ia64_tpa(_etext) - 1;
240 data_resource.start = ia64_tpa(_etext);
241 data_resource.end = ia64_tpa(_edata) - 1;
242 bss_resource.start = ia64_tpa(__bss_start);
243 bss_resource.end = ia64_tpa(_end) - 1;
244 efi_initialize_iomem_resources(&code_resource, &data_resource,
245 &bss_resource);
246
247 return 0;
248}
249
250__initcall(register_memory);
251
252
253#ifdef CONFIG_KEXEC
254
255
256
257
258
259
260
261
262
263
264
265static int __init check_crashkernel_memory(unsigned long pbase, size_t size)
266{
267 if (ia64_platform_is("sn2") || ia64_platform_is("uv"))
268 return 1;
269 else
270 return pbase < (1UL << 32);
271}
272
273static void __init setup_crashkernel(unsigned long total, int *n)
274{
275 unsigned long long base = 0, size = 0;
276 int ret;
277
278 ret = parse_crashkernel(boot_command_line, total,
279 &size, &base);
280 if (ret == 0 && size > 0) {
281 if (!base) {
282 sort_regions(rsvd_region, *n);
283 *n = merge_regions(rsvd_region, *n);
284 base = kdump_find_rsvd_region(size,
285 rsvd_region, *n);
286 }
287
288 if (!check_crashkernel_memory(base, size)) {
289 pr_warning("crashkernel: There would be kdump memory "
290 "at %ld GB but this is unusable because it "
291 "must\nbe below 4 GB. Change the memory "
292 "configuration of the machine.\n",
293 (unsigned long)(base >> 30));
294 return;
295 }
296
297 if (base != ~0UL) {
298 printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
299 "for crashkernel (System RAM: %ldMB)\n",
300 (unsigned long)(size >> 20),
301 (unsigned long)(base >> 20),
302 (unsigned long)(total >> 20));
303 rsvd_region[*n].start =
304 (unsigned long)__va(base);
305 rsvd_region[*n].end =
306 (unsigned long)__va(base + size);
307 (*n)++;
308 crashk_res.start = base;
309 crashk_res.end = base + size - 1;
310 }
311 }
312 efi_memmap_res.start = ia64_boot_param->efi_memmap;
313 efi_memmap_res.end = efi_memmap_res.start +
314 ia64_boot_param->efi_memmap_size;
315 boot_param_res.start = __pa(ia64_boot_param);
316 boot_param_res.end = boot_param_res.start +
317 sizeof(*ia64_boot_param);
318}
319#else
320static inline void __init setup_crashkernel(unsigned long total, int *n)
321{}
322#endif
323
324
325
326
327
328
329
330
331void __init
332reserve_memory (void)
333{
334 int n = 0;
335 unsigned long total_memory;
336
337
338
339
340 rsvd_region[n].start = (unsigned long) ia64_boot_param;
341 rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param);
342 n++;
343
344 rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap);
345 rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size;
346 n++;
347
348 rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line);
349 rsvd_region[n].end = (rsvd_region[n].start
350 + strlen(__va(ia64_boot_param->command_line)) + 1);
351 n++;
352
353 rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START);
354 rsvd_region[n].end = (unsigned long) ia64_imva(_end);
355 n++;
356
357#ifdef CONFIG_BLK_DEV_INITRD
358 if (ia64_boot_param->initrd_start) {
359 rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start);
360 rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size;
361 n++;
362 }
363#endif
364
365#ifdef CONFIG_CRASH_DUMP
366 if (reserve_elfcorehdr(&rsvd_region[n].start,
367 &rsvd_region[n].end) == 0)
368 n++;
369#endif
370
371 total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
372 n++;
373
374 setup_crashkernel(total_memory, &n);
375
376
377 rsvd_region[n].start = ~0UL;
378 rsvd_region[n].end = ~0UL;
379 n++;
380
381 num_rsvd_regions = n;
382 BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n);
383
384 sort_regions(rsvd_region, num_rsvd_regions);
385 num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions);
386
387
388 for (n = 0; n < num_rsvd_regions - 1; n++) {
389 struct rsvd_region *region = &rsvd_region[n];
390 phys_addr_t addr = __pa(region->start);
391 phys_addr_t size = region->end - region->start;
392
393 memblock_reserve(addr, size);
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
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428
429
430
431
432
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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 clear_sched_clock_stable();
624}
625
626
627
628
629static int
630show_cpuinfo (struct seq_file *m, void *v)
631{
632#ifdef CONFIG_SMP
633# define lpj c->loops_per_jiffy
634# define cpunum c->cpu
635#else
636# define lpj loops_per_jiffy
637# define cpunum 0
638#endif
639 static struct {
640 unsigned long mask;
641 const char *feature_name;
642 } feature_bits[] = {
643 { 1UL << 0, "branchlong" },
644 { 1UL << 1, "spontaneous deferral"},
645 { 1UL << 2, "16-byte atomic ops" }
646 };
647 char features[128], *cp, *sep;
648 struct cpuinfo_ia64 *c = v;
649 unsigned long mask;
650 unsigned long proc_freq;
651 int i, size;
652
653 mask = c->features;
654
655
656 memcpy(features, "standard", 9);
657 cp = features;
658 size = sizeof(features);
659 sep = "";
660 for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) {
661 if (mask & feature_bits[i].mask) {
662 cp += snprintf(cp, size, "%s%s", sep,
663 feature_bits[i].feature_name),
664 sep = ", ";
665 mask &= ~feature_bits[i].mask;
666 size = sizeof(features) - (cp - features);
667 }
668 }
669 if (mask && size > 1) {
670
671 snprintf(cp, size, "%s0x%lx", sep, mask);
672 }
673
674 proc_freq = cpufreq_quick_get(cpunum);
675 if (!proc_freq)
676 proc_freq = c->proc_freq / 1000;
677
678 seq_printf(m,
679 "processor : %d\n"
680 "vendor : %s\n"
681 "arch : IA-64\n"
682 "family : %u\n"
683 "model : %u\n"
684 "model name : %s\n"
685 "revision : %u\n"
686 "archrev : %u\n"
687 "features : %s\n"
688 "cpu number : %lu\n"
689 "cpu regs : %u\n"
690 "cpu MHz : %lu.%03lu\n"
691 "itc MHz : %lu.%06lu\n"
692 "BogoMIPS : %lu.%02lu\n",
693 cpunum, c->vendor, c->family, c->model,
694 c->model_name, c->revision, c->archrev,
695 features, c->ppn, c->number,
696 proc_freq / 1000, proc_freq % 1000,
697 c->itc_freq / 1000000, c->itc_freq % 1000000,
698 lpj*HZ/500000, (lpj*HZ/5000) % 100);
699#ifdef CONFIG_SMP
700 seq_printf(m, "siblings : %u\n",
701 cpumask_weight(&cpu_core_map[cpunum]));
702 if (c->socket_id != -1)
703 seq_printf(m, "physical id: %u\n", c->socket_id);
704 if (c->threads_per_core > 1 || c->cores_per_socket > 1)
705 seq_printf(m,
706 "core id : %u\n"
707 "thread id : %u\n",
708 c->core_id, c->thread_id);
709#endif
710 seq_printf(m,"\n");
711
712 return 0;
713}
714
715static void *
716c_start (struct seq_file *m, loff_t *pos)
717{
718#ifdef CONFIG_SMP
719 while (*pos < nr_cpu_ids && !cpu_online(*pos))
720 ++*pos;
721#endif
722 return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL;
723}
724
725static void *
726c_next (struct seq_file *m, void *v, loff_t *pos)
727{
728 ++*pos;
729 return c_start(m, pos);
730}
731
732static void
733c_stop (struct seq_file *m, void *v)
734{
735}
736
737const struct seq_operations cpuinfo_op = {
738 .start = c_start,
739 .next = c_next,
740 .stop = c_stop,
741 .show = show_cpuinfo
742};
743
744#define MAX_BRANDS 8
745static char brandname[MAX_BRANDS][128];
746
747static char *
748get_model_name(__u8 family, __u8 model)
749{
750 static int overflow;
751 char brand[128];
752 int i;
753
754 memcpy(brand, "Unknown", 8);
755 if (ia64_pal_get_brand_info(brand)) {
756 if (family == 0x7)
757 memcpy(brand, "Merced", 7);
758 else if (family == 0x1f) switch (model) {
759 case 0: memcpy(brand, "McKinley", 9); break;
760 case 1: memcpy(brand, "Madison", 8); break;
761 case 2: memcpy(brand, "Madison up to 9M cache", 23); break;
762 }
763 }
764 for (i = 0; i < MAX_BRANDS; i++)
765 if (strcmp(brandname[i], brand) == 0)
766 return brandname[i];
767 for (i = 0; i < MAX_BRANDS; i++)
768 if (brandname[i][0] == '\0')
769 return strcpy(brandname[i], brand);
770 if (overflow++ == 0)
771 printk(KERN_ERR
772 "%s: Table overflow. Some processor model information will be missing\n",
773 __func__);
774 return "Unknown";
775}
776
777static void
778identify_cpu (struct cpuinfo_ia64 *c)
779{
780 union {
781 unsigned long bits[5];
782 struct {
783
784 char vendor[16];
785
786
787 u64 ppn;
788
789
790 unsigned number : 8;
791 unsigned revision : 8;
792 unsigned model : 8;
793 unsigned family : 8;
794 unsigned archrev : 8;
795 unsigned reserved : 24;
796
797
798 u64 features;
799 } field;
800 } cpuid;
801 pal_vm_info_1_u_t vm1;
802 pal_vm_info_2_u_t vm2;
803 pal_status_t status;
804 unsigned long impl_va_msb = 50, phys_addr_size = 44;
805 int i;
806 for (i = 0; i < 5; ++i)
807 cpuid.bits[i] = ia64_get_cpuid(i);
808
809 memcpy(c->vendor, cpuid.field.vendor, 16);
810#ifdef CONFIG_SMP
811 c->cpu = smp_processor_id();
812
813
814
815
816 c->threads_per_core = c->cores_per_socket = c->num_log = 1;
817 c->socket_id = -1;
818
819 identify_siblings(c);
820
821 if (c->threads_per_core > smp_num_siblings)
822 smp_num_siblings = c->threads_per_core;
823#endif
824 c->ppn = cpuid.field.ppn;
825 c->number = cpuid.field.number;
826 c->revision = cpuid.field.revision;
827 c->model = cpuid.field.model;
828 c->family = cpuid.field.family;
829 c->archrev = cpuid.field.archrev;
830 c->features = cpuid.field.features;
831 c->model_name = get_model_name(c->family, c->model);
832
833 status = ia64_pal_vm_summary(&vm1, &vm2);
834 if (status == PAL_STATUS_SUCCESS) {
835 impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb;
836 phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size;
837 }
838 c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1));
839 c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1));
840}
841
842
843
844
845
846
847
848
849static void
850get_cache_info(void)
851{
852 unsigned long line_size, max = 1;
853 unsigned long l, levels, unique_caches;
854 pal_cache_config_info_t cci;
855 long status;
856
857 status = ia64_pal_cache_summary(&levels, &unique_caches);
858 if (status != 0) {
859 printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n",
860 __func__, status);
861 max = SMP_CACHE_BYTES;
862
863 ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
864
865 ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
866 goto out;
867 }
868
869 for (l = 0; l < levels; ++l) {
870
871 status = ia64_pal_cache_config_info(l, 2, &cci);
872 if (status != 0) {
873 printk(KERN_ERR "%s: ia64_pal_cache_config_info"
874 "(l=%lu, 2) failed (status=%ld)\n",
875 __func__, l, status);
876 max = SMP_CACHE_BYTES;
877
878 cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
879
880 ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
881 cci.pcci_unified = 1;
882 } else {
883 if (cci.pcci_stride < ia64_cache_stride_shift)
884 ia64_cache_stride_shift = cci.pcci_stride;
885
886 line_size = 1 << cci.pcci_line_size;
887 if (line_size > max)
888 max = line_size;
889 }
890
891 if (!cci.pcci_unified) {
892
893 status = ia64_pal_cache_config_info(l, 1, &cci);
894 if (status != 0) {
895 printk(KERN_ERR "%s: ia64_pal_cache_config_info"
896 "(l=%lu, 1) failed (status=%ld)\n",
897 __func__, l, status);
898
899 cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
900 }
901 }
902 if (cci.pcci_stride < ia64_i_cache_stride_shift)
903 ia64_i_cache_stride_shift = cci.pcci_stride;
904 }
905 out:
906 if (max > ia64_max_cacheline_size)
907 ia64_max_cacheline_size = max;
908}
909
910
911
912
913
914void
915cpu_init (void)
916{
917 extern void ia64_mmu_init(void *);
918 static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG;
919 unsigned long num_phys_stacked;
920 pal_vm_info_2_u_t vmi;
921 unsigned int max_ctx;
922 struct cpuinfo_ia64 *cpu_info;
923 void *cpu_data;
924
925 cpu_data = per_cpu_init();
926#ifdef CONFIG_SMP
927
928
929
930
931 if (smp_processor_id() == 0) {
932 cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0));
933 cpumask_set_cpu(0, &cpu_core_map[0]);
934 } else {
935
936
937
938
939
940
941
942 ia64_set_kr(IA64_KR_PER_CPU_DATA,
943 ia64_tpa(cpu_data) - (long) __per_cpu_start);
944 }
945#endif
946
947 get_cache_info();
948
949
950
951
952
953
954
955 cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start);
956 identify_cpu(cpu_info);
957
958#ifdef CONFIG_MCKINLEY
959 {
960# define FEATURE_SET 16
961 struct ia64_pal_retval iprv;
962
963 if (cpu_info->family == 0x1f) {
964 PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0);
965 if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80))
966 PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES,
967 (iprv.v1 | 0x80), FEATURE_SET, 0);
968 }
969 }
970#endif
971
972
973 memset(task_pt_regs(current), 0, sizeof(struct pt_regs));
974
975 ia64_set_kr(IA64_KR_FPU_OWNER, 0);
976
977
978
979
980
981
982
983
984 ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page)));
985
986
987
988
989
990
991
992
993
994
995 ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR
996 | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC));
997 mmgrab(&init_mm);
998 current->active_mm = &init_mm;
999 BUG_ON(current->mm);
1000
1001 ia64_mmu_init(ia64_imva(cpu_data));
1002 ia64_mca_cpu_init(ia64_imva(cpu_data));
1003
1004
1005 ia64_set_itc(0);
1006
1007
1008 ia64_set_itv(1 << 16);
1009 ia64_set_lrr0(1 << 16);
1010 ia64_set_lrr1(1 << 16);
1011 ia64_setreg(_IA64_REG_CR_PMV, 1 << 16);
1012 ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16);
1013
1014
1015 ia64_setreg(_IA64_REG_CR_TPR, 0);
1016
1017
1018 while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR)
1019 ia64_eoi();
1020
1021#ifdef CONFIG_SMP
1022 normal_xtp();
1023#endif
1024
1025
1026 if (ia64_pal_vm_summary(NULL, &vmi) == 0) {
1027 max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1;
1028 setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL);
1029 } else {
1030 printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n");
1031 max_ctx = (1U << 15) - 1;
1032 }
1033 while (max_ctx < ia64_ctx.max_ctx) {
1034 unsigned int old = ia64_ctx.max_ctx;
1035 if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old)
1036 break;
1037 }
1038
1039 if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) {
1040 printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical "
1041 "stacked regs\n");
1042 num_phys_stacked = 96;
1043 }
1044
1045 if (num_phys_stacked > max_num_phys_stacked) {
1046 ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8);
1047 max_num_phys_stacked = num_phys_stacked;
1048 }
1049 platform_cpu_init();
1050}
1051
1052void __init
1053check_bugs (void)
1054{
1055 ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles,
1056 (unsigned long) __end___mckinley_e9_bundles);
1057}
1058
1059static int __init run_dmi_scan(void)
1060{
1061 dmi_setup();
1062 return 0;
1063}
1064core_initcall(run_dmi_scan);
1065