Commit | Line | Data |
---|---|---|
711fa809 | 1 | /* |
11c19656 | 2 | * arch/sh/kernel/setup.c |
1da177e4 | 3 | * |
1da177e4 | 4 | * This file handles the architecture-dependent parts of initialization |
11c19656 PM |
5 | * |
6 | * Copyright (C) 1999 Niibe Yutaka | |
01066625 | 7 | * Copyright (C) 2002 - 2007 Paul Mundt |
1da177e4 | 8 | */ |
894673ee | 9 | #include <linux/screen_info.h> |
1da177e4 LT |
10 | #include <linux/ioport.h> |
11 | #include <linux/init.h> | |
12 | #include <linux/initrd.h> | |
13 | #include <linux/bootmem.h> | |
14 | #include <linux/console.h> | |
15 | #include <linux/seq_file.h> | |
16 | #include <linux/root_dev.h> | |
17 | #include <linux/utsname.h> | |
01066625 | 18 | #include <linux/nodemask.h> |
1da177e4 | 19 | #include <linux/cpu.h> |
22a9835c | 20 | #include <linux/pfn.h> |
711fa809 | 21 | #include <linux/fs.h> |
01066625 | 22 | #include <linux/mm.h> |
4d5ade5b | 23 | #include <linux/kexec.h> |
98d877c4 | 24 | #include <linux/module.h> |
0016a126 | 25 | #include <linux/smp.h> |
b9e393c2 PM |
26 | #include <linux/err.h> |
27 | #include <linux/debugfs.h> | |
daf423db | 28 | #include <linux/crash_dump.h> |
fa43972f | 29 | #include <linux/mmzone.h> |
1da177e4 LT |
30 | #include <asm/uaccess.h> |
31 | #include <asm/io.h> | |
7a302a96 | 32 | #include <asm/page.h> |
cd01204b | 33 | #include <asm/elf.h> |
1da177e4 LT |
34 | #include <asm/sections.h> |
35 | #include <asm/irq.h> | |
36 | #include <asm/setup.h> | |
de02797a | 37 | #include <asm/clock.h> |
01066625 | 38 | #include <asm/mmu_context.h> |
1da177e4 | 39 | |
1da177e4 LT |
40 | /* |
41 | * Initialize loops_per_jiffy as 10000000 (1000MIPS). | |
42 | * This value will be used at the very early stage of serial setup. | |
43 | * The bigger value means no problem. | |
44 | */ | |
2d4a73d5 PM |
45 | struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = { |
46 | [0] = { | |
47 | .type = CPU_SH_NONE, | |
48 | .loops_per_jiffy = 10000000, | |
49 | }, | |
50 | }; | |
51 | EXPORT_SYMBOL(cpu_data); | |
82f81f47 PM |
52 | |
53 | /* | |
54 | * The machine vector. First entry in .machvec.init, or clobbered by | |
55 | * sh_mv= on the command line, prior to .machvec.init teardown. | |
56 | */ | |
fd8f20e8 | 57 | struct sh_machine_vector sh_mv = { .mv_name = "generic", }; |
971ac16d | 58 | EXPORT_SYMBOL(sh_mv); |
82f81f47 | 59 | |
2c7834a6 | 60 | #ifdef CONFIG_VT |
1da177e4 | 61 | struct screen_info screen_info; |
2c7834a6 | 62 | #endif |
1da177e4 | 63 | |
1da177e4 LT |
64 | extern int root_mountflags; |
65 | ||
65463b73 | 66 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 67 | #define RAMDISK_PROMPT_FLAG 0x8000 |
65463b73 | 68 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 69 | |
53c82622 | 70 | static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, }; |
1da177e4 | 71 | |
69d1ef4c PM |
72 | static struct resource code_resource = { |
73 | .name = "Kernel code", | |
74 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
75 | }; | |
76 | ||
77 | static struct resource data_resource = { | |
78 | .name = "Kernel data", | |
79 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
80 | }; | |
1da177e4 | 81 | |
3d83984e MD |
82 | static struct resource bss_resource = { |
83 | .name = "Kernel bss", | |
84 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
85 | }; | |
86 | ||
98d877c4 PM |
87 | unsigned long memory_start; |
88 | EXPORT_SYMBOL(memory_start); | |
7e5186ea | 89 | unsigned long memory_end = 0; |
98d877c4 | 90 | EXPORT_SYMBOL(memory_end); |
1da177e4 | 91 | |
0146ba78 MD |
92 | static struct resource mem_resources[MAX_NUMNODES]; |
93 | ||
cd01204b PM |
94 | int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; |
95 | ||
9655ad03 | 96 | static int __init early_parse_mem(char *p) |
1da177e4 | 97 | { |
9655ad03 | 98 | unsigned long size; |
1da177e4 | 99 | |
d02b08f6 | 100 | memory_start = (unsigned long)__va(__MEMORY_START); |
9655ad03 | 101 | size = memparse(p, &p); |
80a68a43 SM |
102 | |
103 | if (size > __MEMORY_SIZE) { | |
104 | static char msg[] __initdata = KERN_ERR | |
105 | "Using mem= to increase the size of kernel memory " | |
106 | "is not allowed.\n" | |
107 | " Recompile the kernel with the correct value for " | |
108 | "CONFIG_MEMORY_SIZE.\n"; | |
109 | printk(msg); | |
110 | return 0; | |
111 | } | |
112 | ||
9655ad03 | 113 | memory_end = memory_start + size; |
2c7834a6 | 114 | |
1da177e4 LT |
115 | return 0; |
116 | } | |
9655ad03 | 117 | early_param("mem", early_parse_mem); |
1da177e4 | 118 | |
01066625 PM |
119 | /* |
120 | * Register fully available low RAM pages with the bootmem allocator. | |
121 | */ | |
122 | static void __init register_bootmem_low_pages(void) | |
1da177e4 | 123 | { |
01066625 | 124 | unsigned long curr_pfn, last_pfn, pages; |
b641fe01 | 125 | |
1da177e4 | 126 | /* |
01066625 | 127 | * We are rounding up the start address of usable memory: |
1da177e4 | 128 | */ |
01066625 | 129 | curr_pfn = PFN_UP(__MEMORY_START); |
1da177e4 LT |
130 | |
131 | /* | |
01066625 | 132 | * ... and at the end of the usable range downwards: |
1da177e4 | 133 | */ |
01066625 | 134 | last_pfn = PFN_DOWN(__pa(memory_end)); |
1da177e4 | 135 | |
01066625 PM |
136 | if (last_pfn > max_low_pfn) |
137 | last_pfn = max_low_pfn; | |
138 | ||
139 | pages = last_pfn - curr_pfn; | |
140 | free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages)); | |
141 | } | |
142 | ||
7d7712a3 BW |
143 | #ifdef CONFIG_KEXEC |
144 | static void __init reserve_crashkernel(void) | |
145 | { | |
146 | unsigned long long free_mem; | |
147 | unsigned long long crash_size, crash_base; | |
148 | int ret; | |
149 | ||
150 | free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; | |
151 | ||
152 | ret = parse_crashkernel(boot_command_line, free_mem, | |
153 | &crash_size, &crash_base); | |
154 | if (ret == 0 && crash_size) { | |
18a01a3b | 155 | if (crash_base <= 0) { |
7d7712a3 BW |
156 | printk(KERN_INFO "crashkernel reservation failed - " |
157 | "you have to specify a base address\n"); | |
18a01a3b BW |
158 | return; |
159 | } | |
160 | ||
161 | if (reserve_bootmem(crash_base, crash_size, | |
162 | BOOTMEM_EXCLUSIVE) < 0) { | |
163 | printk(KERN_INFO "crashkernel reservation failed - " | |
164 | "memory is in use\n"); | |
165 | return; | |
166 | } | |
167 | ||
168 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " | |
169 | "for crashkernel (System RAM: %ldMB)\n", | |
170 | (unsigned long)(crash_size >> 20), | |
171 | (unsigned long)(crash_base >> 20), | |
172 | (unsigned long)(free_mem >> 20)); | |
173 | crashk_res.start = crash_base; | |
174 | crashk_res.end = crash_base + crash_size - 1; | |
34894c78 | 175 | insert_resource(&iomem_resource, &crashk_res); |
7d7712a3 BW |
176 | } |
177 | } | |
178 | #else | |
179 | static inline void __init reserve_crashkernel(void) | |
180 | {} | |
181 | #endif | |
182 | ||
0146ba78 MD |
183 | void __init __add_active_range(unsigned int nid, unsigned long start_pfn, |
184 | unsigned long end_pfn) | |
185 | { | |
186 | struct resource *res = &mem_resources[nid]; | |
187 | ||
188 | WARN_ON(res->name); /* max one active range per node for now */ | |
189 | ||
190 | res->name = "System RAM"; | |
191 | res->start = start_pfn << PAGE_SHIFT; | |
192 | res->end = (end_pfn << PAGE_SHIFT) - 1; | |
193 | res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
194 | if (request_resource(&iomem_resource, res)) { | |
195 | pr_err("unable to request memory_resource 0x%lx 0x%lx\n", | |
196 | start_pfn, end_pfn); | |
197 | return; | |
198 | } | |
199 | ||
200 | /* | |
201 | * We don't know which RAM region contains kernel data, | |
202 | * so we try it repeatedly and let the resource manager | |
203 | * test it. | |
204 | */ | |
205 | request_resource(res, &code_resource); | |
206 | request_resource(res, &data_resource); | |
207 | request_resource(res, &bss_resource); | |
208 | ||
0146ba78 MD |
209 | add_active_range(nid, start_pfn, end_pfn); |
210 | } | |
211 | ||
2826fa61 | 212 | void __init setup_bootmem_allocator(unsigned long free_pfn) |
01066625 PM |
213 | { |
214 | unsigned long bootmap_size; | |
1da177e4 LT |
215 | |
216 | /* | |
217 | * Find a proper area for the bootmem bitmap. After this | |
218 | * bootstrap step all allocations (until the page allocator | |
219 | * is intact) must be done via bootmem_alloc(). | |
220 | */ | |
2826fa61 | 221 | bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn, |
01066625 | 222 | min_low_pfn, max_low_pfn); |
1da177e4 | 223 | |
0146ba78 | 224 | __add_active_range(0, min_low_pfn, max_low_pfn); |
01066625 | 225 | register_bootmem_low_pages(); |
1da177e4 | 226 | |
01066625 | 227 | node_set_online(0); |
b641fe01 | 228 | |
1da177e4 LT |
229 | /* |
230 | * Reserve the kernel text and | |
231 | * Reserve the bootmem bitmap. We do this in two steps (first step | |
232 | * was init_bootmem()), because this catches the (definitely buggy) | |
233 | * case of us accidentally initializing the bootmem allocator with | |
234 | * an invalid RAM area. | |
235 | */ | |
01066625 | 236 | reserve_bootmem(__MEMORY_START+PAGE_SIZE, |
72a7fe39 BW |
237 | (PFN_PHYS(free_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START, |
238 | BOOTMEM_DEFAULT); | |
1da177e4 LT |
239 | |
240 | /* | |
241 | * reserve physical page 0 - it's a special BIOS page on many boxes, | |
242 | * enabling clean reboots, SMP operation, laptop functions. | |
243 | */ | |
72a7fe39 | 244 | reserve_bootmem(__MEMORY_START, PAGE_SIZE, BOOTMEM_DEFAULT); |
1da177e4 | 245 | |
2826fa61 PM |
246 | sparse_memory_present_with_active_regions(0); |
247 | ||
1da177e4 | 248 | #ifdef CONFIG_BLK_DEV_INITRD |
3f9654f0 | 249 | ROOT_DEV = Root_RAM0; |
1da177e4 LT |
250 | |
251 | if (LOADER_TYPE && INITRD_START) { | |
252 | if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) { | |
01066625 | 253 | reserve_bootmem(INITRD_START + __MEMORY_START, |
72a7fe39 | 254 | INITRD_SIZE, BOOTMEM_DEFAULT); |
41504c39 PM |
255 | initrd_start = INITRD_START + PAGE_OFFSET + |
256 | __MEMORY_START; | |
1da177e4 LT |
257 | initrd_end = initrd_start + INITRD_SIZE; |
258 | } else { | |
259 | printk("initrd extends beyond end of memory " | |
260 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", | |
261 | INITRD_START + INITRD_SIZE, | |
262 | max_low_pfn << PAGE_SHIFT); | |
263 | initrd_start = 0; | |
264 | } | |
265 | } | |
266 | #endif | |
7d7712a3 BW |
267 | |
268 | reserve_crashkernel(); | |
01066625 PM |
269 | } |
270 | ||
271 | #ifndef CONFIG_NEED_MULTIPLE_NODES | |
272 | static void __init setup_memory(void) | |
273 | { | |
274 | unsigned long start_pfn; | |
275 | ||
276 | /* | |
277 | * Partially used pages are not usable - thus | |
278 | * we are rounding upwards: | |
279 | */ | |
280 | start_pfn = PFN_UP(__pa(_end)); | |
281 | setup_bootmem_allocator(start_pfn); | |
282 | } | |
283 | #else | |
284 | extern void __init setup_memory(void); | |
285 | #endif | |
286 | ||
daf423db SH |
287 | /* |
288 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by | |
289 | * is_kdump_kernel() to determine if we are booting after a panic. Hence | |
290 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. | |
291 | */ | |
292 | #ifdef CONFIG_CRASH_DUMP | |
293 | /* elfcorehdr= specifies the location of elf core header | |
294 | * stored by the crashed kernel. | |
295 | */ | |
296 | static int __init parse_elfcorehdr(char *arg) | |
297 | { | |
298 | if (!arg) | |
299 | return -EINVAL; | |
300 | elfcorehdr_addr = memparse(arg, &arg); | |
301 | return 0; | |
302 | } | |
303 | early_param("elfcorehdr", parse_elfcorehdr); | |
304 | #endif | |
305 | ||
01066625 PM |
306 | void __init setup_arch(char **cmdline_p) |
307 | { | |
308 | enable_mmu(); | |
309 | ||
01066625 PM |
310 | ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); |
311 | ||
0105346c PM |
312 | printk(KERN_NOTICE "Boot params:\n" |
313 | "... MOUNT_ROOT_RDONLY - %08lx\n" | |
314 | "... RAMDISK_FLAGS - %08lx\n" | |
315 | "... ORIG_ROOT_DEV - %08lx\n" | |
316 | "... LOADER_TYPE - %08lx\n" | |
317 | "... INITRD_START - %08lx\n" | |
318 | "... INITRD_SIZE - %08lx\n", | |
319 | MOUNT_ROOT_RDONLY, RAMDISK_FLAGS, | |
320 | ORIG_ROOT_DEV, LOADER_TYPE, | |
321 | INITRD_START, INITRD_SIZE); | |
322 | ||
01066625 PM |
323 | #ifdef CONFIG_BLK_DEV_RAM |
324 | rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; | |
325 | rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); | |
326 | rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); | |
327 | #endif | |
328 | ||
329 | if (!MOUNT_ROOT_RDONLY) | |
330 | root_mountflags &= ~MS_RDONLY; | |
331 | init_mm.start_code = (unsigned long) _text; | |
332 | init_mm.end_code = (unsigned long) _etext; | |
333 | init_mm.end_data = (unsigned long) _edata; | |
334 | init_mm.brk = (unsigned long) _end; | |
335 | ||
336 | code_resource.start = virt_to_phys(_text); | |
337 | code_resource.end = virt_to_phys(_etext)-1; | |
338 | data_resource.start = virt_to_phys(_etext); | |
339 | data_resource.end = virt_to_phys(_edata)-1; | |
3d83984e MD |
340 | bss_resource.start = virt_to_phys(__bss_start); |
341 | bss_resource.end = virt_to_phys(_ebss)-1; | |
01066625 | 342 | |
d02b08f6 | 343 | memory_start = (unsigned long)__va(__MEMORY_START); |
7e5186ea PM |
344 | if (!memory_end) |
345 | memory_end = memory_start + __MEMORY_SIZE; | |
9655ad03 | 346 | |
ba36197c PM |
347 | #ifdef CONFIG_CMDLINE_BOOL |
348 | strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line)); | |
349 | #else | |
350 | strlcpy(command_line, COMMAND_LINE, sizeof(command_line)); | |
351 | #endif | |
9655ad03 | 352 | |
ba36197c PM |
353 | /* Save unparsed command line copy for /proc/cmdline */ |
354 | memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); | |
9655ad03 PM |
355 | *cmdline_p = command_line; |
356 | ||
01066625 PM |
357 | parse_early_param(); |
358 | ||
9655ad03 | 359 | sh_mv_setup(); |
01066625 PM |
360 | |
361 | /* | |
362 | * Find the highest page frame number we have available | |
363 | */ | |
364 | max_pfn = PFN_DOWN(__pa(memory_end)); | |
365 | ||
366 | /* | |
367 | * Determine low and high memory ranges: | |
368 | */ | |
369 | max_low_pfn = max_pfn; | |
370 | min_low_pfn = __MEMORY_START >> PAGE_SHIFT; | |
371 | ||
372 | nodes_clear(node_online_map); | |
dfbb9042 PM |
373 | |
374 | /* Setup bootmem with available RAM */ | |
01066625 | 375 | setup_memory(); |
01066625 | 376 | sparse_init(); |
1da177e4 LT |
377 | |
378 | #ifdef CONFIG_DUMMY_CONSOLE | |
379 | conswitchp = &dummy_con; | |
380 | #endif | |
381 | ||
382 | /* Perform the machine specific initialisation */ | |
2c7834a6 PM |
383 | if (likely(sh_mv.mv_setup)) |
384 | sh_mv.mv_setup(cmdline_p); | |
1da177e4 | 385 | |
dfbb9042 | 386 | paging_init(); |
0016a126 PM |
387 | |
388 | #ifdef CONFIG_SMP | |
389 | plat_smp_setup(); | |
390 | #endif | |
dfbb9042 | 391 | } |
1da177e4 | 392 | |
1da177e4 | 393 | static const char *cpu_name[] = { |
a8f67f4b | 394 | [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263", |
b552c7e8 | 395 | [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619", |
e5723e0e PM |
396 | [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706", |
397 | [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708", | |
398 | [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710", | |
3ea6bc3d | 399 | [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720", |
31a49c4b YS |
400 | [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729", |
401 | [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S", | |
402 | [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751", | |
403 | [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760", | |
e5723e0e | 404 | [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501", |
7d740a06 YS |
405 | [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770", |
406 | [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781", | |
407 | [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785", | |
408 | [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3", | |
c2672f62 | 409 | [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103", |
178dd0cd | 410 | [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723", |
9109a30e | 411 | [CPU_SH7366] = "SH7366", [CPU_SH_NONE] = "Unknown" |
1da177e4 LT |
412 | }; |
413 | ||
11c19656 | 414 | const char *get_cpu_subtype(struct sh_cpuinfo *c) |
1da177e4 | 415 | { |
11c19656 | 416 | return cpu_name[c->type]; |
1da177e4 | 417 | } |
b19a33ca | 418 | EXPORT_SYMBOL(get_cpu_subtype); |
1da177e4 LT |
419 | |
420 | #ifdef CONFIG_PROC_FS | |
2220d164 | 421 | /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */ |
1da177e4 | 422 | static const char *cpu_flags[] = { |
2220d164 | 423 | "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr", |
074f98df | 424 | "ptea", "llsc", "l2", "op32", NULL |
1da177e4 LT |
425 | }; |
426 | ||
11c19656 | 427 | static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c) |
1da177e4 LT |
428 | { |
429 | unsigned long i; | |
430 | ||
431 | seq_printf(m, "cpu flags\t:"); | |
432 | ||
11c19656 | 433 | if (!c->flags) { |
1da177e4 LT |
434 | seq_printf(m, " %s\n", cpu_flags[0]); |
435 | return; | |
436 | } | |
437 | ||
de02797a | 438 | for (i = 0; cpu_flags[i]; i++) |
11c19656 | 439 | if ((c->flags & (1 << i))) |
1da177e4 LT |
440 | seq_printf(m, " %s", cpu_flags[i+1]); |
441 | ||
442 | seq_printf(m, "\n"); | |
443 | } | |
444 | ||
2c7834a6 PM |
445 | static void show_cacheinfo(struct seq_file *m, const char *type, |
446 | struct cache_info info) | |
1da177e4 LT |
447 | { |
448 | unsigned int cache_size; | |
449 | ||
450 | cache_size = info.ways * info.sets * info.linesz; | |
451 | ||
de02797a PM |
452 | seq_printf(m, "%s size\t: %2dKiB (%d-way)\n", |
453 | type, cache_size >> 10, info.ways); | |
1da177e4 LT |
454 | } |
455 | ||
456 | /* | |
457 | * Get CPU information for use by the procfs. | |
458 | */ | |
459 | static int show_cpuinfo(struct seq_file *m, void *v) | |
460 | { | |
11c19656 PM |
461 | struct sh_cpuinfo *c = v; |
462 | unsigned int cpu = c - cpu_data; | |
463 | ||
464 | if (!cpu_online(cpu)) | |
465 | return 0; | |
1da177e4 | 466 | |
11c19656 | 467 | if (cpu == 0) |
1da177e4 LT |
468 | seq_printf(m, "machine\t\t: %s\n", get_system_type()); |
469 | ||
470 | seq_printf(m, "processor\t: %d\n", cpu); | |
96b644bd | 471 | seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); |
11c19656 | 472 | seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c)); |
3611ee7a SM |
473 | if (c->cut_major == -1) |
474 | seq_printf(m, "cut\t\t: unknown\n"); | |
475 | else if (c->cut_minor == -1) | |
476 | seq_printf(m, "cut\t\t: %d.x\n", c->cut_major); | |
477 | else | |
478 | seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor); | |
1da177e4 | 479 | |
11c19656 | 480 | show_cpuflags(m, c); |
1da177e4 LT |
481 | |
482 | seq_printf(m, "cache type\t: "); | |
483 | ||
484 | /* | |
485 | * Check for what type of cache we have, we support both the | |
486 | * unified cache on the SH-2 and SH-3, as well as the harvard | |
487 | * style cache on the SH-4. | |
488 | */ | |
11c19656 | 489 | if (c->icache.flags & SH_CACHE_COMBINED) { |
1da177e4 | 490 | seq_printf(m, "unified\n"); |
11c19656 | 491 | show_cacheinfo(m, "cache", c->icache); |
1da177e4 LT |
492 | } else { |
493 | seq_printf(m, "split (harvard)\n"); | |
11c19656 PM |
494 | show_cacheinfo(m, "icache", c->icache); |
495 | show_cacheinfo(m, "dcache", c->dcache); | |
1da177e4 LT |
496 | } |
497 | ||
72c35543 | 498 | /* Optional secondary cache */ |
11c19656 PM |
499 | if (c->flags & CPU_HAS_L2_CACHE) |
500 | show_cacheinfo(m, "scache", c->scache); | |
72c35543 | 501 | |
1da177e4 | 502 | seq_printf(m, "bogomips\t: %lu.%02lu\n", |
11c19656 PM |
503 | c->loops_per_jiffy/(500000/HZ), |
504 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
1da177e4 | 505 | |
db62e5bd | 506 | return 0; |
1da177e4 LT |
507 | } |
508 | ||
1da177e4 LT |
509 | static void *c_start(struct seq_file *m, loff_t *pos) |
510 | { | |
511 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; | |
512 | } | |
513 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
514 | { | |
515 | ++*pos; | |
516 | return c_start(m, pos); | |
517 | } | |
518 | static void c_stop(struct seq_file *m, void *v) | |
519 | { | |
520 | } | |
773c7bd6 | 521 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
522 | .start = c_start, |
523 | .next = c_next, | |
524 | .stop = c_stop, | |
525 | .show = show_cpuinfo, | |
526 | }; | |
527 | #endif /* CONFIG_PROC_FS */ | |
b9e393c2 PM |
528 | |
529 | struct dentry *sh_debugfs_root; | |
530 | ||
531 | static int __init sh_debugfs_init(void) | |
532 | { | |
533 | sh_debugfs_root = debugfs_create_dir("sh", NULL); | |
534 | if (IS_ERR(sh_debugfs_root)) | |
535 | return PTR_ERR(sh_debugfs_root); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | arch_initcall(sh_debugfs_init); |