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 int root_mountflags;
65 extern void _stext, _text, _etext, __data_start, _edata, _end;
67 unsigned int processor_id;
68 EXPORT_SYMBOL(processor_id);
69 unsigned int __machine_arch_type;
70 EXPORT_SYMBOL(__machine_arch_type);
72 unsigned int __atags_pointer __initdata;
74 unsigned int system_rev;
75 EXPORT_SYMBOL(system_rev);
77 unsigned int system_serial_low;
78 EXPORT_SYMBOL(system_serial_low);
80 unsigned int system_serial_high;
81 EXPORT_SYMBOL(system_serial_high);
83 unsigned int elf_hwcap;
84 EXPORT_SYMBOL(elf_hwcap);
86 unsigned long __initdata vmalloc_reserve = 128 << 20;
90 struct processor processor;
93 struct cpu_tlb_fns cpu_tlb;
96 struct cpu_user_fns cpu_user;
99 struct cpu_cache_fns cpu_cache;
101 #ifdef CONFIG_OUTER_CACHE
102 struct outer_cache_fns outer_cache;
109 } ____cacheline_aligned;
111 static struct stack stacks[NR_CPUS];
113 char elf_platform[ELF_PLATFORM_SIZE];
114 EXPORT_SYMBOL(elf_platform);
116 unsigned long phys_initrd_start __initdata = 0;
117 unsigned long phys_initrd_size __initdata = 0;
119 static struct meminfo meminfo __initdata = { 0, };
120 static const char *cpu_name;
121 static const char *machine_name;
122 static char __initdata command_line[COMMAND_LINE_SIZE];
124 static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
125 static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
126 #define ENDIANNESS ((char)endian_test.l)
128 DEFINE_PER_CPU(struct cpuinfo_arm, cpu_data);
131 * Standard memory resources
133 static struct resource mem_res[] = {
138 .flags = IORESOURCE_MEM
141 .name = "Kernel text",
144 .flags = IORESOURCE_MEM
147 .name = "Kernel data",
150 .flags = IORESOURCE_MEM
154 #define video_ram mem_res[0]
155 #define kernel_code mem_res[1]
156 #define kernel_data mem_res[2]
158 static struct resource io_res[] = {
163 .flags = IORESOURCE_IO | IORESOURCE_BUSY
169 .flags = IORESOURCE_IO | IORESOURCE_BUSY
175 .flags = IORESOURCE_IO | IORESOURCE_BUSY
179 #define lp0 io_res[0]
180 #define lp1 io_res[1]
181 #define lp2 io_res[2]
183 static const char *cache_types[16] = {
202 static const char *cache_clean[16] = {
221 static const char *cache_lockdown[16] = {
240 static const char *proc_arch[] = {
260 #define CACHE_TYPE(x) (((x) >> 25) & 15)
261 #define CACHE_S(x) ((x) & (1 << 24))
262 #define CACHE_DSIZE(x) (((x) >> 12) & 4095) /* only if S=1 */
263 #define CACHE_ISIZE(x) ((x) & 4095)
265 #define CACHE_SIZE(y) (((y) >> 6) & 7)
266 #define CACHE_ASSOC(y) (((y) >> 3) & 7)
267 #define CACHE_M(y) ((y) & (1 << 2))
268 #define CACHE_LINE(y) ((y) & 3)
270 static inline void dump_cache(const char *prefix, int cpu, unsigned int cache)
272 unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
274 printk("CPU%u: %s: %d bytes, associativity %d, %d byte lines, %d sets\n",
276 mult << (8 + CACHE_SIZE(cache)),
277 (mult << CACHE_ASSOC(cache)) >> 1,
278 8 << CACHE_LINE(cache),
279 1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
283 static void __init dump_cpu_info(int cpu)
285 unsigned int info = read_cpuid_cachetype();
287 if (info != read_cpuid_id()) {
288 printk("CPU%u: D %s %s cache\n", cpu, cache_is_vivt() ? "VIVT" : "VIPT",
289 cache_types[CACHE_TYPE(info)]);
291 dump_cache("I cache", cpu, CACHE_ISIZE(info));
292 dump_cache("D cache", cpu, CACHE_DSIZE(info));
294 dump_cache("cache", cpu, CACHE_ISIZE(info));
298 if (arch_is_coherent())
299 printk("Cache coherency enabled\n");
302 int cpu_architecture(void)
306 if ((read_cpuid_id() & 0x0008f000) == 0) {
307 cpu_arch = CPU_ARCH_UNKNOWN;
308 } else if ((read_cpuid_id() & 0x0008f000) == 0x00007000) {
309 cpu_arch = (read_cpuid_id() & (1 << 23)) ? CPU_ARCH_ARMv4T : CPU_ARCH_ARMv3;
310 } else if ((read_cpuid_id() & 0x00080000) == 0x00000000) {
311 cpu_arch = (read_cpuid_id() >> 16) & 7;
313 cpu_arch += CPU_ARCH_ARMv3;
314 } else if ((read_cpuid_id() & 0x000f0000) == 0x000f0000) {
317 /* Revised CPUID format. Read the Memory Model Feature
318 * Register 0 and check for VMSAv7 or PMSAv7 */
319 asm("mrc p15, 0, %0, c0, c1, 4"
321 if ((mmfr0 & 0x0000000f) == 0x00000003 ||
322 (mmfr0 & 0x000000f0) == 0x00000030)
323 cpu_arch = CPU_ARCH_ARMv7;
324 else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
325 (mmfr0 & 0x000000f0) == 0x00000020)
326 cpu_arch = CPU_ARCH_ARMv6;
328 cpu_arch = CPU_ARCH_UNKNOWN;
330 cpu_arch = CPU_ARCH_UNKNOWN;
336 * These functions re-use the assembly code in head.S, which
337 * already provide the required functionality.
339 extern struct proc_info_list *lookup_processor_type(unsigned int);
340 extern struct machine_desc *lookup_machine_type(unsigned int);
342 static void __init setup_processor(void)
344 struct proc_info_list *list;
347 * locate processor in the list of supported processor
348 * types. The linker builds this table for us from the
349 * entries in arch/arm/mm/proc-*.S
351 list = lookup_processor_type(read_cpuid_id());
353 printk("CPU configuration botched (ID %08x), unable "
354 "to continue.\n", read_cpuid_id());
358 cpu_name = list->cpu_name;
361 processor = *list->proc;
364 cpu_tlb = *list->tlb;
367 cpu_user = *list->user;
370 cpu_cache = *list->cache;
373 printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
374 cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
375 proc_arch[cpu_architecture()], cr_alignment);
377 sprintf(init_utsname()->machine, "%s%c", list->arch_name, ENDIANNESS);
378 sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);
379 elf_hwcap = list->elf_hwcap;
380 #ifndef CONFIG_ARM_THUMB
381 elf_hwcap &= ~HWCAP_THUMB;
388 * cpu_init - initialise one CPU.
390 * cpu_init dumps the cache information, initialises SMP specific
391 * information, and sets up the per-CPU stacks.
395 unsigned int cpu = smp_processor_id();
396 struct stack *stk = &stacks[cpu];
398 if (cpu >= NR_CPUS) {
399 printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
403 if (system_state == SYSTEM_BOOTING)
407 * setup stacks for re-entrant exception handlers
419 "I" (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
420 "I" (offsetof(struct stack, irq[0])),
421 "I" (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
422 "I" (offsetof(struct stack, abt[0])),
423 "I" (PSR_F_BIT | PSR_I_BIT | UND_MODE),
424 "I" (offsetof(struct stack, und[0])),
425 "I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
429 static struct machine_desc * __init setup_machine(unsigned int nr)
431 struct machine_desc *list;
434 * locate machine in the list of supported machines.
436 list = lookup_machine_type(nr);
438 printk("Machine configuration botched (nr %d), unable "
439 "to continue.\n", nr);
443 printk("Machine: %s\n", list->name);
448 static void __init early_initrd(char **p)
450 unsigned long start, size;
452 start = memparse(*p, p);
454 size = memparse((*p) + 1, p);
456 phys_initrd_start = start;
457 phys_initrd_size = size;
460 __early_param("initrd=", early_initrd);
462 static void __init arm_add_memory(unsigned long start, unsigned long size)
464 struct membank *bank;
467 * Ensure that start/size are aligned to a page boundary.
468 * Size is appropriately rounded down, start is rounded up.
470 size -= start & ~PAGE_MASK;
472 bank = &meminfo.bank[meminfo.nr_banks++];
474 bank->start = PAGE_ALIGN(start);
475 bank->size = size & PAGE_MASK;
476 bank->node = PHYS_TO_NID(start);
480 * Pick out the memory size. We look for mem=size@start,
481 * where start and size are "size[KkMm]"
483 static void __init early_mem(char **p)
485 static int usermem __initdata = 0;
486 unsigned long size, start;
489 * If the user specifies memory size, we
490 * blow away any automatically generated
495 meminfo.nr_banks = 0;
499 size = memparse(*p, p);
501 start = memparse(*p + 1, p);
503 arm_add_memory(start, size);
505 __early_param("mem=", early_mem);
508 * vmalloc=size forces the vmalloc area to be exactly 'size'
509 * bytes. This can be used to increase (or decrease) the vmalloc
510 * area - the default is 128m.
512 static void __init early_vmalloc(char **arg)
514 vmalloc_reserve = memparse(*arg, arg);
516 __early_param("vmalloc=", early_vmalloc);
519 * Initial parsing of the command line.
521 static void __init parse_cmdline(char **cmdline_p, char *from)
523 char c = ' ', *to = command_line;
528 extern struct early_params __early_begin, __early_end;
529 struct early_params *p;
531 for (p = &__early_begin; p < &__early_end; p++) {
532 int arglen = strlen(p->arg);
534 if (memcmp(from, p->arg, arglen) == 0) {
535 if (to != command_line)
540 while (*from != ' ' && *from != '\0')
549 if (COMMAND_LINE_SIZE <= ++len)
554 *cmdline_p = command_line;
558 setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
560 #ifdef CONFIG_BLK_DEV_RAM
561 extern int rd_size, rd_image_start, rd_prompt, rd_doload;
563 rd_image_start = image_start;
573 request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
575 struct resource *res;
578 kernel_code.start = virt_to_phys(&_text);
579 kernel_code.end = virt_to_phys(&_etext - 1);
580 kernel_data.start = virt_to_phys(&__data_start);
581 kernel_data.end = virt_to_phys(&_end - 1);
583 for (i = 0; i < mi->nr_banks; i++) {
584 unsigned long virt_start, virt_end;
586 if (mi->bank[i].size == 0)
589 virt_start = __phys_to_virt(mi->bank[i].start);
590 virt_end = virt_start + mi->bank[i].size - 1;
592 res = alloc_bootmem_low(sizeof(*res));
593 res->name = "System RAM";
594 res->start = __virt_to_phys(virt_start);
595 res->end = __virt_to_phys(virt_end);
596 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
598 request_resource(&iomem_resource, res);
600 if (kernel_code.start >= res->start &&
601 kernel_code.end <= res->end)
602 request_resource(res, &kernel_code);
603 if (kernel_data.start >= res->start &&
604 kernel_data.end <= res->end)
605 request_resource(res, &kernel_data);
608 if (mdesc->video_start) {
609 video_ram.start = mdesc->video_start;
610 video_ram.end = mdesc->video_end;
611 request_resource(&iomem_resource, &video_ram);
615 * Some machines don't have the possibility of ever
616 * possessing lp0, lp1 or lp2
618 if (mdesc->reserve_lp0)
619 request_resource(&ioport_resource, &lp0);
620 if (mdesc->reserve_lp1)
621 request_resource(&ioport_resource, &lp1);
622 if (mdesc->reserve_lp2)
623 request_resource(&ioport_resource, &lp2);
629 * This is the new way of passing data to the kernel at boot time. Rather
630 * than passing a fixed inflexible structure to the kernel, we pass a list
631 * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE
632 * tag for the list to be recognised (to distinguish the tagged list from
633 * a param_struct). The list is terminated with a zero-length tag (this tag
634 * is not parsed in any way).
636 static int __init parse_tag_core(const struct tag *tag)
638 if (tag->hdr.size > 2) {
639 if ((tag->u.core.flags & 1) == 0)
640 root_mountflags &= ~MS_RDONLY;
641 ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
646 __tagtable(ATAG_CORE, parse_tag_core);
648 static int __init parse_tag_mem32(const struct tag *tag)
650 if (meminfo.nr_banks >= NR_BANKS) {
652 "Ignoring memory bank 0x%08x size %dKB\n",
653 tag->u.mem.start, tag->u.mem.size / 1024);
656 arm_add_memory(tag->u.mem.start, tag->u.mem.size);
660 __tagtable(ATAG_MEM, parse_tag_mem32);
662 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
663 struct screen_info screen_info = {
664 .orig_video_lines = 30,
665 .orig_video_cols = 80,
666 .orig_video_mode = 0,
667 .orig_video_ega_bx = 0,
668 .orig_video_isVGA = 1,
669 .orig_video_points = 8
672 static int __init parse_tag_videotext(const struct tag *tag)
674 screen_info.orig_x = tag->u.videotext.x;
675 screen_info.orig_y = tag->u.videotext.y;
676 screen_info.orig_video_page = tag->u.videotext.video_page;
677 screen_info.orig_video_mode = tag->u.videotext.video_mode;
678 screen_info.orig_video_cols = tag->u.videotext.video_cols;
679 screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
680 screen_info.orig_video_lines = tag->u.videotext.video_lines;
681 screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
682 screen_info.orig_video_points = tag->u.videotext.video_points;
686 __tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
689 static int __init parse_tag_ramdisk(const struct tag *tag)
691 setup_ramdisk((tag->u.ramdisk.flags & 1) == 0,
692 (tag->u.ramdisk.flags & 2) == 0,
693 tag->u.ramdisk.start, tag->u.ramdisk.size);
697 __tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
699 static int __init parse_tag_initrd(const struct tag *tag)
701 printk(KERN_WARNING "ATAG_INITRD is deprecated; "
702 "please update your bootloader.\n");
703 phys_initrd_start = __virt_to_phys(tag->u.initrd.start);
704 phys_initrd_size = tag->u.initrd.size;
708 __tagtable(ATAG_INITRD, parse_tag_initrd);
710 static int __init parse_tag_initrd2(const struct tag *tag)
712 phys_initrd_start = tag->u.initrd.start;
713 phys_initrd_size = tag->u.initrd.size;
717 __tagtable(ATAG_INITRD2, parse_tag_initrd2);
719 static int __init parse_tag_serialnr(const struct tag *tag)
721 system_serial_low = tag->u.serialnr.low;
722 system_serial_high = tag->u.serialnr.high;
726 __tagtable(ATAG_SERIAL, parse_tag_serialnr);
728 static int __init parse_tag_revision(const struct tag *tag)
730 system_rev = tag->u.revision.rev;
734 __tagtable(ATAG_REVISION, parse_tag_revision);
736 static int __init parse_tag_cmdline(const struct tag *tag)
738 strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
742 __tagtable(ATAG_CMDLINE, parse_tag_cmdline);
745 * Scan the tag table for this tag, and call its parse function.
746 * The tag table is built by the linker from all the __tagtable
749 static int __init parse_tag(const struct tag *tag)
751 extern struct tagtable __tagtable_begin, __tagtable_end;
754 for (t = &__tagtable_begin; t < &__tagtable_end; t++)
755 if (tag->hdr.tag == t->tag) {
760 return t < &__tagtable_end;
764 * Parse all tags in the list, checking both the global and architecture
765 * specific tag tables.
767 static void __init parse_tags(const struct tag *t)
769 for (; t->hdr.size; t = tag_next(t))
772 "Ignoring unrecognised tag 0x%08x\n",
777 * This holds our defaults.
779 static struct init_tags {
780 struct tag_header hdr1;
781 struct tag_core core;
782 struct tag_header hdr2;
783 struct tag_mem32 mem;
784 struct tag_header hdr3;
785 } init_tags __initdata = {
786 { tag_size(tag_core), ATAG_CORE },
787 { 1, PAGE_SIZE, 0xff },
788 { tag_size(tag_mem32), ATAG_MEM },
789 { MEM_SIZE, PHYS_OFFSET },
793 static void (*init_machine)(void) __initdata;
795 static int __init customize_machine(void)
797 /* customizes platform devices, or adds new ones */
802 arch_initcall(customize_machine);
804 void __init setup_arch(char **cmdline_p)
806 struct tag *tags = (struct tag *)&init_tags;
807 struct machine_desc *mdesc;
808 char *from = default_command_line;
811 mdesc = setup_machine(machine_arch_type);
812 machine_name = mdesc->name;
814 if (mdesc->soft_reboot)
818 tags = phys_to_virt(__atags_pointer);
819 else if (mdesc->boot_params)
820 tags = phys_to_virt(mdesc->boot_params);
823 * If we have the old style parameters, convert them to
826 if (tags->hdr.tag != ATAG_CORE)
827 convert_to_tag_list(tags);
828 if (tags->hdr.tag != ATAG_CORE)
829 tags = (struct tag *)&init_tags;
832 mdesc->fixup(mdesc, tags, &from, &meminfo);
834 if (tags->hdr.tag == ATAG_CORE) {
835 if (meminfo.nr_banks != 0)
836 squash_mem_tags(tags);
841 init_mm.start_code = (unsigned long) &_text;
842 init_mm.end_code = (unsigned long) &_etext;
843 init_mm.end_data = (unsigned long) &_edata;
844 init_mm.brk = (unsigned long) &_end;
846 memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
847 boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
848 parse_cmdline(cmdline_p, from);
849 paging_init(&meminfo, mdesc);
850 request_standard_resources(&meminfo, mdesc);
859 * Set up various architecture-specific pointers
861 init_arch_irq = mdesc->init_irq;
862 system_timer = mdesc->timer;
863 init_machine = mdesc->init_machine;
866 #if defined(CONFIG_VGA_CONSOLE)
867 conswitchp = &vga_con;
868 #elif defined(CONFIG_DUMMY_CONSOLE)
869 conswitchp = &dummy_con;
876 static int __init topology_init(void)
880 for_each_possible_cpu(cpu) {
881 struct cpuinfo_arm *cpuinfo = &per_cpu(cpu_data, cpu);
882 cpuinfo->cpu.hotpluggable = 1;
883 register_cpu(&cpuinfo->cpu, cpu);
889 subsys_initcall(topology_init);
891 static const char *hwcap_str[] = {
907 c_show_cache(struct seq_file *m, const char *type, unsigned int cache)
909 unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
911 seq_printf(m, "%s size\t\t: %d\n"
913 "%s line length\t: %d\n"
915 type, mult << (8 + CACHE_SIZE(cache)),
916 type, (mult << CACHE_ASSOC(cache)) >> 1,
917 type, 8 << CACHE_LINE(cache),
918 type, 1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
922 static int c_show(struct seq_file *m, void *v)
926 seq_printf(m, "Processor\t: %s rev %d (%s)\n",
927 cpu_name, read_cpuid_id() & 15, elf_platform);
929 #if defined(CONFIG_SMP)
930 for_each_online_cpu(i) {
932 * glibc reads /proc/cpuinfo to determine the number of
933 * online processors, looking for lines beginning with
934 * "processor". Give glibc what it expects.
936 seq_printf(m, "processor\t: %d\n", i);
937 seq_printf(m, "BogoMIPS\t: %lu.%02lu\n\n",
938 per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
939 (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);
941 #else /* CONFIG_SMP */
942 seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
943 loops_per_jiffy / (500000/HZ),
944 (loops_per_jiffy / (5000/HZ)) % 100);
947 /* dump out the processor features */
948 seq_puts(m, "Features\t: ");
950 for (i = 0; hwcap_str[i]; i++)
951 if (elf_hwcap & (1 << i))
952 seq_printf(m, "%s ", hwcap_str[i]);
954 seq_printf(m, "\nCPU implementer\t: 0x%02x\n", read_cpuid_id() >> 24);
955 seq_printf(m, "CPU architecture: %s\n", proc_arch[cpu_architecture()]);
957 if ((read_cpuid_id() & 0x0008f000) == 0x00000000) {
959 seq_printf(m, "CPU part\t: %07x\n", read_cpuid_id() >> 4);
961 if ((read_cpuid_id() & 0x0008f000) == 0x00007000) {
963 seq_printf(m, "CPU variant\t: 0x%02x\n",
964 (read_cpuid_id() >> 16) & 127);
967 seq_printf(m, "CPU variant\t: 0x%x\n",
968 (read_cpuid_id() >> 20) & 15);
970 seq_printf(m, "CPU part\t: 0x%03x\n",
971 (read_cpuid_id() >> 4) & 0xfff);
973 seq_printf(m, "CPU revision\t: %d\n", read_cpuid_id() & 15);
976 unsigned int cache_info = read_cpuid_cachetype();
977 if (cache_info != read_cpuid_id()) {
978 seq_printf(m, "Cache type\t: %s\n"
979 "Cache clean\t: %s\n"
980 "Cache lockdown\t: %s\n"
981 "Cache format\t: %s\n",
982 cache_types[CACHE_TYPE(cache_info)],
983 cache_clean[CACHE_TYPE(cache_info)],
984 cache_lockdown[CACHE_TYPE(cache_info)],
985 CACHE_S(cache_info) ? "Harvard" : "Unified");
987 if (CACHE_S(cache_info)) {
988 c_show_cache(m, "I", CACHE_ISIZE(cache_info));
989 c_show_cache(m, "D", CACHE_DSIZE(cache_info));
991 c_show_cache(m, "Cache", CACHE_ISIZE(cache_info));
998 seq_printf(m, "Hardware\t: %s\n", machine_name);
999 seq_printf(m, "Revision\t: %04x\n", system_rev);
1000 seq_printf(m, "Serial\t\t: %08x%08x\n",
1001 system_serial_high, system_serial_low);
1006 static void *c_start(struct seq_file *m, loff_t *pos)
1008 return *pos < 1 ? (void *)1 : NULL;
1011 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
1017 static void c_stop(struct seq_file *m, void *v)
1021 const struct seq_operations cpuinfo_op = {