2 * linux/arch/arm/kernel/setup.c
4 * Copyright (C) 1995-2001 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/stddef.h>
13 #include <linux/ioport.h>
14 #include <linux/delay.h>
15 #include <linux/utsname.h>
16 #include <linux/initrd.h>
17 #include <linux/console.h>
18 #include <linux/bootmem.h>
19 #include <linux/seq_file.h>
20 #include <linux/screen_info.h>
21 #include <linux/init.h>
22 #include <linux/root_dev.h>
23 #include <linux/cpu.h>
24 #include <linux/interrupt.h>
25 #include <linux/smp.h>
29 #include <asm/cputype.h>
31 #include <asm/procinfo.h>
32 #include <asm/setup.h>
33 #include <asm/mach-types.h>
34 #include <asm/cacheflush.h>
35 #include <asm/cachetype.h>
36 #include <asm/tlbflush.h>
38 #include <asm/mach/arch.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/time.h>
41 #include <asm/traps.h>
47 #define MEM_SIZE (16*1024*1024)
50 #if defined(CONFIG_FPE_NWFPE) || defined(CONFIG_FPE_FASTFPE)
53 static int __init fpe_setup(char *line)
55 memcpy(fpe_type, line, 8);
59 __setup("fpe=", fpe_setup);
62 extern void paging_init(struct meminfo *, struct machine_desc *desc);
63 extern void reboot_setup(char *str);
64 extern void _text, _etext, __data_start, _edata, _end;
66 unsigned int processor_id;
67 EXPORT_SYMBOL(processor_id);
68 unsigned int __machine_arch_type;
69 EXPORT_SYMBOL(__machine_arch_type);
71 unsigned int __atags_pointer __initdata;
73 unsigned int system_rev;
74 EXPORT_SYMBOL(system_rev);
76 unsigned int system_serial_low;
77 EXPORT_SYMBOL(system_serial_low);
79 unsigned int system_serial_high;
80 EXPORT_SYMBOL(system_serial_high);
82 unsigned int elf_hwcap;
83 EXPORT_SYMBOL(elf_hwcap);
85 unsigned long __initdata vmalloc_reserve = 128 << 20;
89 struct processor processor;
92 struct cpu_tlb_fns cpu_tlb;
95 struct cpu_user_fns cpu_user;
98 struct cpu_cache_fns cpu_cache;
100 #ifdef CONFIG_OUTER_CACHE
101 struct outer_cache_fns outer_cache;
108 } ____cacheline_aligned;
110 static struct stack stacks[NR_CPUS];
112 char elf_platform[ELF_PLATFORM_SIZE];
113 EXPORT_SYMBOL(elf_platform);
115 static struct meminfo meminfo __initdata = { 0, };
116 static const char *cpu_name;
117 static const char *machine_name;
118 static char __initdata command_line[COMMAND_LINE_SIZE];
120 static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
121 static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
122 #define ENDIANNESS ((char)endian_test.l)
124 DEFINE_PER_CPU(struct cpuinfo_arm, cpu_data);
127 * Standard memory resources
129 static struct resource mem_res[] = {
134 .flags = IORESOURCE_MEM
137 .name = "Kernel text",
140 .flags = IORESOURCE_MEM
143 .name = "Kernel data",
146 .flags = IORESOURCE_MEM
150 #define video_ram mem_res[0]
151 #define kernel_code mem_res[1]
152 #define kernel_data mem_res[2]
154 static struct resource io_res[] = {
159 .flags = IORESOURCE_IO | IORESOURCE_BUSY
165 .flags = IORESOURCE_IO | IORESOURCE_BUSY
171 .flags = IORESOURCE_IO | IORESOURCE_BUSY
175 #define lp0 io_res[0]
176 #define lp1 io_res[1]
177 #define lp2 io_res[2]
179 static const char *cache_types[16] = {
198 static const char *cache_clean[16] = {
217 static const char *cache_lockdown[16] = {
236 static const char *proc_arch[] = {
256 #define CACHE_TYPE(x) (((x) >> 25) & 15)
257 #define CACHE_S(x) ((x) & (1 << 24))
258 #define CACHE_DSIZE(x) (((x) >> 12) & 4095) /* only if S=1 */
259 #define CACHE_ISIZE(x) ((x) & 4095)
261 #define CACHE_SIZE(y) (((y) >> 6) & 7)
262 #define CACHE_ASSOC(y) (((y) >> 3) & 7)
263 #define CACHE_M(y) ((y) & (1 << 2))
264 #define CACHE_LINE(y) ((y) & 3)
266 static inline void dump_cache(const char *prefix, int cpu, unsigned int cache)
268 unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
270 printk("CPU%u: %s: %d bytes, associativity %d, %d byte lines, %d sets\n",
272 mult << (8 + CACHE_SIZE(cache)),
273 (mult << CACHE_ASSOC(cache)) >> 1,
274 8 << CACHE_LINE(cache),
275 1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
279 static void __init dump_cpu_info(int cpu)
281 unsigned int info = read_cpuid_cachetype();
283 if (info != read_cpuid_id()) {
284 printk("CPU%u: D %s %s cache\n", cpu, cache_is_vivt() ? "VIVT" : "VIPT",
285 cache_types[CACHE_TYPE(info)]);
287 dump_cache("I cache", cpu, CACHE_ISIZE(info));
288 dump_cache("D cache", cpu, CACHE_DSIZE(info));
290 dump_cache("cache", cpu, CACHE_ISIZE(info));
294 if (arch_is_coherent())
295 printk("Cache coherency enabled\n");
298 int cpu_architecture(void)
302 if ((read_cpuid_id() & 0x0008f000) == 0) {
303 cpu_arch = CPU_ARCH_UNKNOWN;
304 } else if ((read_cpuid_id() & 0x0008f000) == 0x00007000) {
305 cpu_arch = (read_cpuid_id() & (1 << 23)) ? CPU_ARCH_ARMv4T : CPU_ARCH_ARMv3;
306 } else if ((read_cpuid_id() & 0x00080000) == 0x00000000) {
307 cpu_arch = (read_cpuid_id() >> 16) & 7;
309 cpu_arch += CPU_ARCH_ARMv3;
310 } else if ((read_cpuid_id() & 0x000f0000) == 0x000f0000) {
313 /* Revised CPUID format. Read the Memory Model Feature
314 * Register 0 and check for VMSAv7 or PMSAv7 */
315 asm("mrc p15, 0, %0, c0, c1, 4"
317 if ((mmfr0 & 0x0000000f) == 0x00000003 ||
318 (mmfr0 & 0x000000f0) == 0x00000030)
319 cpu_arch = CPU_ARCH_ARMv7;
320 else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
321 (mmfr0 & 0x000000f0) == 0x00000020)
322 cpu_arch = CPU_ARCH_ARMv6;
324 cpu_arch = CPU_ARCH_UNKNOWN;
326 cpu_arch = CPU_ARCH_UNKNOWN;
332 * These functions re-use the assembly code in head.S, which
333 * already provide the required functionality.
335 extern struct proc_info_list *lookup_processor_type(unsigned int);
336 extern struct machine_desc *lookup_machine_type(unsigned int);
338 static void __init setup_processor(void)
340 struct proc_info_list *list;
343 * locate processor in the list of supported processor
344 * types. The linker builds this table for us from the
345 * entries in arch/arm/mm/proc-*.S
347 list = lookup_processor_type(read_cpuid_id());
349 printk("CPU configuration botched (ID %08x), unable "
350 "to continue.\n", read_cpuid_id());
354 cpu_name = list->cpu_name;
357 processor = *list->proc;
360 cpu_tlb = *list->tlb;
363 cpu_user = *list->user;
366 cpu_cache = *list->cache;
369 printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
370 cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
371 proc_arch[cpu_architecture()], cr_alignment);
373 sprintf(init_utsname()->machine, "%s%c", list->arch_name, ENDIANNESS);
374 sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);
375 elf_hwcap = list->elf_hwcap;
376 #ifndef CONFIG_ARM_THUMB
377 elf_hwcap &= ~HWCAP_THUMB;
384 * cpu_init - initialise one CPU.
386 * cpu_init dumps the cache information, initialises SMP specific
387 * information, and sets up the per-CPU stacks.
391 unsigned int cpu = smp_processor_id();
392 struct stack *stk = &stacks[cpu];
394 if (cpu >= NR_CPUS) {
395 printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
399 if (system_state == SYSTEM_BOOTING)
403 * setup stacks for re-entrant exception handlers
415 "I" (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
416 "I" (offsetof(struct stack, irq[0])),
417 "I" (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
418 "I" (offsetof(struct stack, abt[0])),
419 "I" (PSR_F_BIT | PSR_I_BIT | UND_MODE),
420 "I" (offsetof(struct stack, und[0])),
421 "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
425 static struct machine_desc * __init setup_machine(unsigned int nr)
427 struct machine_desc *list;
430 * locate machine in the list of supported machines.
432 list = lookup_machine_type(nr);
434 printk("Machine configuration botched (nr %d), unable "
435 "to continue.\n", nr);
439 printk("Machine: %s\n", list->name);
444 static void __init arm_add_memory(unsigned long start, unsigned long size)
446 struct membank *bank;
449 * Ensure that start/size are aligned to a page boundary.
450 * Size is appropriately rounded down, start is rounded up.
452 size -= start & ~PAGE_MASK;
454 bank = &meminfo.bank[meminfo.nr_banks++];
456 bank->start = PAGE_ALIGN(start);
457 bank->size = size & PAGE_MASK;
458 bank->node = PHYS_TO_NID(start);
462 * Pick out the memory size. We look for mem=size@start,
463 * where start and size are "size[KkMm]"
465 static void __init early_mem(char **p)
467 static int usermem __initdata = 0;
468 unsigned long size, start;
471 * If the user specifies memory size, we
472 * blow away any automatically generated
477 meminfo.nr_banks = 0;
481 size = memparse(*p, p);
483 start = memparse(*p + 1, p);
485 arm_add_memory(start, size);
487 __early_param("mem=", early_mem);
490 * vmalloc=size forces the vmalloc area to be exactly 'size'
491 * bytes. This can be used to increase (or decrease) the vmalloc
492 * area - the default is 128m.
494 static void __init early_vmalloc(char **arg)
496 vmalloc_reserve = memparse(*arg, arg);
498 __early_param("vmalloc=", early_vmalloc);
501 * Initial parsing of the command line.
503 static void __init parse_cmdline(char **cmdline_p, char *from)
505 char c = ' ', *to = command_line;
510 extern struct early_params __early_begin, __early_end;
511 struct early_params *p;
513 for (p = &__early_begin; p < &__early_end; p++) {
514 int arglen = strlen(p->arg);
516 if (memcmp(from, p->arg, arglen) == 0) {
517 if (to != command_line)
522 while (*from != ' ' && *from != '\0')
531 if (COMMAND_LINE_SIZE <= ++len)
536 *cmdline_p = command_line;
540 setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
542 #ifdef CONFIG_BLK_DEV_RAM
543 extern int rd_size, rd_image_start, rd_prompt, rd_doload;
545 rd_image_start = image_start;
555 request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
557 struct resource *res;
560 kernel_code.start = virt_to_phys(&_text);
561 kernel_code.end = virt_to_phys(&_etext - 1);
562 kernel_data.start = virt_to_phys(&__data_start);
563 kernel_data.end = virt_to_phys(&_end - 1);
565 for (i = 0; i < mi->nr_banks; i++) {
566 unsigned long virt_start, virt_end;
568 if (mi->bank[i].size == 0)
571 virt_start = __phys_to_virt(mi->bank[i].start);
572 virt_end = virt_start + mi->bank[i].size - 1;
574 res = alloc_bootmem_low(sizeof(*res));
575 res->name = "System RAM";
576 res->start = __virt_to_phys(virt_start);
577 res->end = __virt_to_phys(virt_end);
578 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
580 request_resource(&iomem_resource, res);
582 if (kernel_code.start >= res->start &&
583 kernel_code.end <= res->end)
584 request_resource(res, &kernel_code);
585 if (kernel_data.start >= res->start &&
586 kernel_data.end <= res->end)
587 request_resource(res, &kernel_data);
590 if (mdesc->video_start) {
591 video_ram.start = mdesc->video_start;
592 video_ram.end = mdesc->video_end;
593 request_resource(&iomem_resource, &video_ram);
597 * Some machines don't have the possibility of ever
598 * possessing lp0, lp1 or lp2
600 if (mdesc->reserve_lp0)
601 request_resource(&ioport_resource, &lp0);
602 if (mdesc->reserve_lp1)
603 request_resource(&ioport_resource, &lp1);
604 if (mdesc->reserve_lp2)
605 request_resource(&ioport_resource, &lp2);
611 * This is the new way of passing data to the kernel at boot time. Rather
612 * than passing a fixed inflexible structure to the kernel, we pass a list
613 * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE
614 * tag for the list to be recognised (to distinguish the tagged list from
615 * a param_struct). The list is terminated with a zero-length tag (this tag
616 * is not parsed in any way).
618 static int __init parse_tag_core(const struct tag *tag)
620 if (tag->hdr.size > 2) {
621 if ((tag->u.core.flags & 1) == 0)
622 root_mountflags &= ~MS_RDONLY;
623 ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
628 __tagtable(ATAG_CORE, parse_tag_core);
630 static int __init parse_tag_mem32(const struct tag *tag)
632 if (meminfo.nr_banks >= NR_BANKS) {
634 "Ignoring memory bank 0x%08x size %dKB\n",
635 tag->u.mem.start, tag->u.mem.size / 1024);
638 arm_add_memory(tag->u.mem.start, tag->u.mem.size);
642 __tagtable(ATAG_MEM, parse_tag_mem32);
644 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
645 struct screen_info screen_info = {
646 .orig_video_lines = 30,
647 .orig_video_cols = 80,
648 .orig_video_mode = 0,
649 .orig_video_ega_bx = 0,
650 .orig_video_isVGA = 1,
651 .orig_video_points = 8
654 static int __init parse_tag_videotext(const struct tag *tag)
656 screen_info.orig_x = tag->u.videotext.x;
657 screen_info.orig_y = tag->u.videotext.y;
658 screen_info.orig_video_page = tag->u.videotext.video_page;
659 screen_info.orig_video_mode = tag->u.videotext.video_mode;
660 screen_info.orig_video_cols = tag->u.videotext.video_cols;
661 screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
662 screen_info.orig_video_lines = tag->u.videotext.video_lines;
663 screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
664 screen_info.orig_video_points = tag->u.videotext.video_points;
668 __tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
671 static int __init parse_tag_ramdisk(const struct tag *tag)
673 setup_ramdisk((tag->u.ramdisk.flags & 1) == 0,
674 (tag->u.ramdisk.flags & 2) == 0,
675 tag->u.ramdisk.start, tag->u.ramdisk.size);
679 __tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
681 static int __init parse_tag_serialnr(const struct tag *tag)
683 system_serial_low = tag->u.serialnr.low;
684 system_serial_high = tag->u.serialnr.high;
688 __tagtable(ATAG_SERIAL, parse_tag_serialnr);
690 static int __init parse_tag_revision(const struct tag *tag)
692 system_rev = tag->u.revision.rev;
696 __tagtable(ATAG_REVISION, parse_tag_revision);
698 static int __init parse_tag_cmdline(const struct tag *tag)
700 strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
704 __tagtable(ATAG_CMDLINE, parse_tag_cmdline);
707 * Scan the tag table for this tag, and call its parse function.
708 * The tag table is built by the linker from all the __tagtable
711 static int __init parse_tag(const struct tag *tag)
713 extern struct tagtable __tagtable_begin, __tagtable_end;
716 for (t = &__tagtable_begin; t < &__tagtable_end; t++)
717 if (tag->hdr.tag == t->tag) {
722 return t < &__tagtable_end;
726 * Parse all tags in the list, checking both the global and architecture
727 * specific tag tables.
729 static void __init parse_tags(const struct tag *t)
731 for (; t->hdr.size; t = tag_next(t))
734 "Ignoring unrecognised tag 0x%08x\n",
739 * This holds our defaults.
741 static struct init_tags {
742 struct tag_header hdr1;
743 struct tag_core core;
744 struct tag_header hdr2;
745 struct tag_mem32 mem;
746 struct tag_header hdr3;
747 } init_tags __initdata = {
748 { tag_size(tag_core), ATAG_CORE },
749 { 1, PAGE_SIZE, 0xff },
750 { tag_size(tag_mem32), ATAG_MEM },
751 { MEM_SIZE, PHYS_OFFSET },
755 static void (*init_machine)(void) __initdata;
757 static int __init customize_machine(void)
759 /* customizes platform devices, or adds new ones */
764 arch_initcall(customize_machine);
766 void __init setup_arch(char **cmdline_p)
768 struct tag *tags = (struct tag *)&init_tags;
769 struct machine_desc *mdesc;
770 char *from = default_command_line;
773 mdesc = setup_machine(machine_arch_type);
774 machine_name = mdesc->name;
776 if (mdesc->soft_reboot)
780 tags = phys_to_virt(__atags_pointer);
781 else if (mdesc->boot_params)
782 tags = phys_to_virt(mdesc->boot_params);
785 * If we have the old style parameters, convert them to
788 if (tags->hdr.tag != ATAG_CORE)
789 convert_to_tag_list(tags);
790 if (tags->hdr.tag != ATAG_CORE)
791 tags = (struct tag *)&init_tags;
794 mdesc->fixup(mdesc, tags, &from, &meminfo);
796 if (tags->hdr.tag == ATAG_CORE) {
797 if (meminfo.nr_banks != 0)
798 squash_mem_tags(tags);
803 init_mm.start_code = (unsigned long) &_text;
804 init_mm.end_code = (unsigned long) &_etext;
805 init_mm.end_data = (unsigned long) &_edata;
806 init_mm.brk = (unsigned long) &_end;
808 memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
809 boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
810 parse_cmdline(cmdline_p, from);
811 paging_init(&meminfo, mdesc);
812 request_standard_resources(&meminfo, mdesc);
821 * Set up various architecture-specific pointers
823 init_arch_irq = mdesc->init_irq;
824 system_timer = mdesc->timer;
825 init_machine = mdesc->init_machine;
828 #if defined(CONFIG_VGA_CONSOLE)
829 conswitchp = &vga_con;
830 #elif defined(CONFIG_DUMMY_CONSOLE)
831 conswitchp = &dummy_con;
838 static int __init topology_init(void)
842 for_each_possible_cpu(cpu) {
843 struct cpuinfo_arm *cpuinfo = &per_cpu(cpu_data, cpu);
844 cpuinfo->cpu.hotpluggable = 1;
845 register_cpu(&cpuinfo->cpu, cpu);
851 subsys_initcall(topology_init);
853 static const char *hwcap_str[] = {
869 c_show_cache(struct seq_file *m, const char *type, unsigned int cache)
871 unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
873 seq_printf(m, "%s size\t\t: %d\n"
875 "%s line length\t: %d\n"
877 type, mult << (8 + CACHE_SIZE(cache)),
878 type, (mult << CACHE_ASSOC(cache)) >> 1,
879 type, 8 << CACHE_LINE(cache),
880 type, 1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
884 static int c_show(struct seq_file *m, void *v)
888 seq_printf(m, "Processor\t: %s rev %d (%s)\n",
889 cpu_name, read_cpuid_id() & 15, elf_platform);
891 #if defined(CONFIG_SMP)
892 for_each_online_cpu(i) {
894 * glibc reads /proc/cpuinfo to determine the number of
895 * online processors, looking for lines beginning with
896 * "processor". Give glibc what it expects.
898 seq_printf(m, "processor\t: %d\n", i);
899 seq_printf(m, "BogoMIPS\t: %lu.%02lu\n\n",
900 per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
901 (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);
903 #else /* CONFIG_SMP */
904 seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
905 loops_per_jiffy / (500000/HZ),
906 (loops_per_jiffy / (5000/HZ)) % 100);
909 /* dump out the processor features */
910 seq_puts(m, "Features\t: ");
912 for (i = 0; hwcap_str[i]; i++)
913 if (elf_hwcap & (1 << i))
914 seq_printf(m, "%s ", hwcap_str[i]);
916 seq_printf(m, "\nCPU implementer\t: 0x%02x\n", read_cpuid_id() >> 24);
917 seq_printf(m, "CPU architecture: %s\n", proc_arch[cpu_architecture()]);
919 if ((read_cpuid_id() & 0x0008f000) == 0x00000000) {
921 seq_printf(m, "CPU part\t: %07x\n", read_cpuid_id() >> 4);
923 if ((read_cpuid_id() & 0x0008f000) == 0x00007000) {
925 seq_printf(m, "CPU variant\t: 0x%02x\n",
926 (read_cpuid_id() >> 16) & 127);
929 seq_printf(m, "CPU variant\t: 0x%x\n",
930 (read_cpuid_id() >> 20) & 15);
932 seq_printf(m, "CPU part\t: 0x%03x\n",
933 (read_cpuid_id() >> 4) & 0xfff);
935 seq_printf(m, "CPU revision\t: %d\n", read_cpuid_id() & 15);
938 unsigned int cache_info = read_cpuid_cachetype();
939 if (cache_info != read_cpuid_id()) {
940 seq_printf(m, "Cache type\t: %s\n"
941 "Cache clean\t: %s\n"
942 "Cache lockdown\t: %s\n"
943 "Cache format\t: %s\n",
944 cache_types[CACHE_TYPE(cache_info)],
945 cache_clean[CACHE_TYPE(cache_info)],
946 cache_lockdown[CACHE_TYPE(cache_info)],
947 CACHE_S(cache_info) ? "Harvard" : "Unified");
949 if (CACHE_S(cache_info)) {
950 c_show_cache(m, "I", CACHE_ISIZE(cache_info));
951 c_show_cache(m, "D", CACHE_DSIZE(cache_info));
953 c_show_cache(m, "Cache", CACHE_ISIZE(cache_info));
960 seq_printf(m, "Hardware\t: %s\n", machine_name);
961 seq_printf(m, "Revision\t: %04x\n", system_rev);
962 seq_printf(m, "Serial\t\t: %08x%08x\n",
963 system_serial_high, system_serial_low);
968 static void *c_start(struct seq_file *m, loff_t *pos)
970 return *pos < 1 ? (void *)1 : NULL;
973 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
979 static void c_stop(struct seq_file *m, void *v)
983 const struct seq_operations cpuinfo_op = {