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