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> |
cf204fa7 PM |
30 | #include <linux/clk.h> |
31 | #include <linux/delay.h> | |
1da177e4 LT |
32 | #include <asm/uaccess.h> |
33 | #include <asm/io.h> | |
7a302a96 | 34 | #include <asm/page.h> |
cd01204b | 35 | #include <asm/elf.h> |
1da177e4 LT |
36 | #include <asm/sections.h> |
37 | #include <asm/irq.h> | |
38 | #include <asm/setup.h> | |
de02797a | 39 | #include <asm/clock.h> |
01066625 | 40 | #include <asm/mmu_context.h> |
1da177e4 | 41 | |
1da177e4 LT |
42 | /* |
43 | * Initialize loops_per_jiffy as 10000000 (1000MIPS). | |
44 | * This value will be used at the very early stage of serial setup. | |
45 | * The bigger value means no problem. | |
46 | */ | |
2d4a73d5 PM |
47 | struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = { |
48 | [0] = { | |
49 | .type = CPU_SH_NONE, | |
50 | .loops_per_jiffy = 10000000, | |
51 | }, | |
52 | }; | |
53 | EXPORT_SYMBOL(cpu_data); | |
82f81f47 PM |
54 | |
55 | /* | |
56 | * The machine vector. First entry in .machvec.init, or clobbered by | |
57 | * sh_mv= on the command line, prior to .machvec.init teardown. | |
58 | */ | |
fd8f20e8 | 59 | struct sh_machine_vector sh_mv = { .mv_name = "generic", }; |
971ac16d | 60 | EXPORT_SYMBOL(sh_mv); |
82f81f47 | 61 | |
2c7834a6 | 62 | #ifdef CONFIG_VT |
1da177e4 | 63 | struct screen_info screen_info; |
2c7834a6 | 64 | #endif |
1da177e4 | 65 | |
1da177e4 LT |
66 | extern int root_mountflags; |
67 | ||
65463b73 | 68 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 69 | #define RAMDISK_PROMPT_FLAG 0x8000 |
65463b73 | 70 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 71 | |
53c82622 | 72 | static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, }; |
1da177e4 | 73 | |
69d1ef4c PM |
74 | static struct resource code_resource = { |
75 | .name = "Kernel code", | |
76 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
77 | }; | |
78 | ||
79 | static struct resource data_resource = { | |
80 | .name = "Kernel data", | |
81 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
82 | }; | |
1da177e4 | 83 | |
3d83984e MD |
84 | static struct resource bss_resource = { |
85 | .name = "Kernel bss", | |
86 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
87 | }; | |
88 | ||
98d877c4 PM |
89 | unsigned long memory_start; |
90 | EXPORT_SYMBOL(memory_start); | |
7e5186ea | 91 | unsigned long memory_end = 0; |
98d877c4 | 92 | EXPORT_SYMBOL(memory_end); |
1da177e4 | 93 | |
0146ba78 MD |
94 | static struct resource mem_resources[MAX_NUMNODES]; |
95 | ||
cd01204b PM |
96 | int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; |
97 | ||
9655ad03 | 98 | static int __init early_parse_mem(char *p) |
1da177e4 | 99 | { |
9655ad03 | 100 | unsigned long size; |
1da177e4 | 101 | |
d02b08f6 | 102 | memory_start = (unsigned long)__va(__MEMORY_START); |
9655ad03 | 103 | size = memparse(p, &p); |
80a68a43 SM |
104 | |
105 | if (size > __MEMORY_SIZE) { | |
106 | static char msg[] __initdata = KERN_ERR | |
107 | "Using mem= to increase the size of kernel memory " | |
108 | "is not allowed.\n" | |
109 | " Recompile the kernel with the correct value for " | |
110 | "CONFIG_MEMORY_SIZE.\n"; | |
111 | printk(msg); | |
112 | return 0; | |
113 | } | |
114 | ||
9655ad03 | 115 | memory_end = memory_start + size; |
2c7834a6 | 116 | |
1da177e4 LT |
117 | return 0; |
118 | } | |
9655ad03 | 119 | early_param("mem", early_parse_mem); |
1da177e4 | 120 | |
01066625 PM |
121 | /* |
122 | * Register fully available low RAM pages with the bootmem allocator. | |
123 | */ | |
124 | static void __init register_bootmem_low_pages(void) | |
1da177e4 | 125 | { |
01066625 | 126 | unsigned long curr_pfn, last_pfn, pages; |
b641fe01 | 127 | |
1da177e4 | 128 | /* |
01066625 | 129 | * We are rounding up the start address of usable memory: |
1da177e4 | 130 | */ |
01066625 | 131 | curr_pfn = PFN_UP(__MEMORY_START); |
1da177e4 LT |
132 | |
133 | /* | |
01066625 | 134 | * ... and at the end of the usable range downwards: |
1da177e4 | 135 | */ |
01066625 | 136 | last_pfn = PFN_DOWN(__pa(memory_end)); |
1da177e4 | 137 | |
01066625 PM |
138 | if (last_pfn > max_low_pfn) |
139 | last_pfn = max_low_pfn; | |
140 | ||
141 | pages = last_pfn - curr_pfn; | |
142 | free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages)); | |
143 | } | |
144 | ||
7d7712a3 BW |
145 | #ifdef CONFIG_KEXEC |
146 | static void __init reserve_crashkernel(void) | |
147 | { | |
148 | unsigned long long free_mem; | |
149 | unsigned long long crash_size, crash_base; | |
4aeaa223 | 150 | void *vp; |
7d7712a3 BW |
151 | int ret; |
152 | ||
153 | free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; | |
154 | ||
155 | ret = parse_crashkernel(boot_command_line, free_mem, | |
156 | &crash_size, &crash_base); | |
157 | if (ret == 0 && crash_size) { | |
18a01a3b | 158 | if (crash_base <= 0) { |
4aeaa223 MD |
159 | vp = alloc_bootmem_nopanic(crash_size); |
160 | if (!vp) { | |
161 | printk(KERN_INFO "crashkernel allocation " | |
162 | "failed\n"); | |
163 | return; | |
164 | } | |
165 | crash_base = __pa(vp); | |
166 | } else if (reserve_bootmem(crash_base, crash_size, | |
18a01a3b BW |
167 | BOOTMEM_EXCLUSIVE) < 0) { |
168 | printk(KERN_INFO "crashkernel reservation failed - " | |
169 | "memory is in use\n"); | |
170 | return; | |
171 | } | |
172 | ||
173 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " | |
174 | "for crashkernel (System RAM: %ldMB)\n", | |
175 | (unsigned long)(crash_size >> 20), | |
176 | (unsigned long)(crash_base >> 20), | |
177 | (unsigned long)(free_mem >> 20)); | |
178 | crashk_res.start = crash_base; | |
179 | crashk_res.end = crash_base + crash_size - 1; | |
34894c78 | 180 | insert_resource(&iomem_resource, &crashk_res); |
7d7712a3 BW |
181 | } |
182 | } | |
183 | #else | |
184 | static inline void __init reserve_crashkernel(void) | |
185 | {} | |
186 | #endif | |
187 | ||
cf204fa7 PM |
188 | #ifndef CONFIG_GENERIC_CALIBRATE_DELAY |
189 | void __cpuinit calibrate_delay(void) | |
190 | { | |
191 | struct clk *clk = clk_get(NULL, "cpu_clk"); | |
192 | ||
193 | if (IS_ERR(clk)) | |
194 | panic("Need a sane CPU clock definition!"); | |
195 | ||
196 | loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ; | |
197 | ||
198 | printk(KERN_INFO "Calibrating delay loop (skipped)... " | |
199 | "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n", | |
200 | loops_per_jiffy/(500000/HZ), | |
201 | (loops_per_jiffy/(5000/HZ)) % 100, | |
202 | loops_per_jiffy); | |
203 | } | |
204 | #endif | |
205 | ||
0146ba78 MD |
206 | void __init __add_active_range(unsigned int nid, unsigned long start_pfn, |
207 | unsigned long end_pfn) | |
208 | { | |
209 | struct resource *res = &mem_resources[nid]; | |
210 | ||
211 | WARN_ON(res->name); /* max one active range per node for now */ | |
212 | ||
213 | res->name = "System RAM"; | |
214 | res->start = start_pfn << PAGE_SHIFT; | |
215 | res->end = (end_pfn << PAGE_SHIFT) - 1; | |
216 | res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
217 | if (request_resource(&iomem_resource, res)) { | |
218 | pr_err("unable to request memory_resource 0x%lx 0x%lx\n", | |
219 | start_pfn, end_pfn); | |
220 | return; | |
221 | } | |
222 | ||
223 | /* | |
224 | * We don't know which RAM region contains kernel data, | |
225 | * so we try it repeatedly and let the resource manager | |
226 | * test it. | |
227 | */ | |
228 | request_resource(res, &code_resource); | |
229 | request_resource(res, &data_resource); | |
230 | request_resource(res, &bss_resource); | |
231 | ||
0146ba78 MD |
232 | add_active_range(nid, start_pfn, end_pfn); |
233 | } | |
234 | ||
2826fa61 | 235 | void __init setup_bootmem_allocator(unsigned long free_pfn) |
01066625 PM |
236 | { |
237 | unsigned long bootmap_size; | |
1da177e4 LT |
238 | |
239 | /* | |
240 | * Find a proper area for the bootmem bitmap. After this | |
241 | * bootstrap step all allocations (until the page allocator | |
242 | * is intact) must be done via bootmem_alloc(). | |
243 | */ | |
2826fa61 | 244 | bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn, |
01066625 | 245 | min_low_pfn, max_low_pfn); |
1da177e4 | 246 | |
0146ba78 | 247 | __add_active_range(0, min_low_pfn, max_low_pfn); |
01066625 | 248 | register_bootmem_low_pages(); |
1da177e4 | 249 | |
01066625 | 250 | node_set_online(0); |
b641fe01 | 251 | |
1da177e4 LT |
252 | /* |
253 | * Reserve the kernel text and | |
254 | * Reserve the bootmem bitmap. We do this in two steps (first step | |
255 | * was init_bootmem()), because this catches the (definitely buggy) | |
256 | * case of us accidentally initializing the bootmem allocator with | |
257 | * an invalid RAM area. | |
258 | */ | |
f040ddaf SM |
259 | reserve_bootmem(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET, |
260 | (PFN_PHYS(free_pfn) + bootmap_size + PAGE_SIZE - 1) - | |
261 | (__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET), | |
262 | BOOTMEM_DEFAULT); | |
1da177e4 LT |
263 | |
264 | /* | |
48865163 | 265 | * Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET. |
1da177e4 | 266 | */ |
48865163 CS |
267 | if (CONFIG_ZERO_PAGE_OFFSET != 0) |
268 | reserve_bootmem(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET, | |
269 | BOOTMEM_DEFAULT); | |
1da177e4 | 270 | |
2826fa61 PM |
271 | sparse_memory_present_with_active_regions(0); |
272 | ||
1da177e4 | 273 | #ifdef CONFIG_BLK_DEV_INITRD |
3f9654f0 | 274 | ROOT_DEV = Root_RAM0; |
1da177e4 LT |
275 | |
276 | if (LOADER_TYPE && INITRD_START) { | |
28d6e52c SM |
277 | unsigned long initrd_start_phys = INITRD_START + __MEMORY_START; |
278 | ||
279 | if (initrd_start_phys + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) { | |
280 | reserve_bootmem(initrd_start_phys, INITRD_SIZE, | |
281 | BOOTMEM_DEFAULT); | |
282 | initrd_start = (unsigned long)__va(initrd_start_phys); | |
1da177e4 LT |
283 | initrd_end = initrd_start + INITRD_SIZE; |
284 | } else { | |
285 | printk("initrd extends beyond end of memory " | |
28d6e52c SM |
286 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", |
287 | initrd_start_phys + INITRD_SIZE, | |
9a19eb2a | 288 | (unsigned long)PFN_PHYS(max_low_pfn)); |
1da177e4 LT |
289 | initrd_start = 0; |
290 | } | |
291 | } | |
292 | #endif | |
7d7712a3 BW |
293 | |
294 | reserve_crashkernel(); | |
01066625 PM |
295 | } |
296 | ||
297 | #ifndef CONFIG_NEED_MULTIPLE_NODES | |
298 | static void __init setup_memory(void) | |
299 | { | |
300 | unsigned long start_pfn; | |
301 | ||
302 | /* | |
303 | * Partially used pages are not usable - thus | |
304 | * we are rounding upwards: | |
305 | */ | |
306 | start_pfn = PFN_UP(__pa(_end)); | |
307 | setup_bootmem_allocator(start_pfn); | |
308 | } | |
309 | #else | |
310 | extern void __init setup_memory(void); | |
311 | #endif | |
312 | ||
daf423db SH |
313 | /* |
314 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by | |
315 | * is_kdump_kernel() to determine if we are booting after a panic. Hence | |
316 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. | |
317 | */ | |
318 | #ifdef CONFIG_CRASH_DUMP | |
319 | /* elfcorehdr= specifies the location of elf core header | |
320 | * stored by the crashed kernel. | |
321 | */ | |
322 | static int __init parse_elfcorehdr(char *arg) | |
323 | { | |
324 | if (!arg) | |
325 | return -EINVAL; | |
326 | elfcorehdr_addr = memparse(arg, &arg); | |
327 | return 0; | |
328 | } | |
329 | early_param("elfcorehdr", parse_elfcorehdr); | |
330 | #endif | |
331 | ||
01066625 PM |
332 | void __init setup_arch(char **cmdline_p) |
333 | { | |
334 | enable_mmu(); | |
335 | ||
01066625 PM |
336 | ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); |
337 | ||
0105346c PM |
338 | printk(KERN_NOTICE "Boot params:\n" |
339 | "... MOUNT_ROOT_RDONLY - %08lx\n" | |
340 | "... RAMDISK_FLAGS - %08lx\n" | |
341 | "... ORIG_ROOT_DEV - %08lx\n" | |
342 | "... LOADER_TYPE - %08lx\n" | |
343 | "... INITRD_START - %08lx\n" | |
344 | "... INITRD_SIZE - %08lx\n", | |
345 | MOUNT_ROOT_RDONLY, RAMDISK_FLAGS, | |
346 | ORIG_ROOT_DEV, LOADER_TYPE, | |
347 | INITRD_START, INITRD_SIZE); | |
348 | ||
01066625 PM |
349 | #ifdef CONFIG_BLK_DEV_RAM |
350 | rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; | |
351 | rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); | |
352 | rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); | |
353 | #endif | |
354 | ||
355 | if (!MOUNT_ROOT_RDONLY) | |
356 | root_mountflags &= ~MS_RDONLY; | |
357 | init_mm.start_code = (unsigned long) _text; | |
358 | init_mm.end_code = (unsigned long) _etext; | |
359 | init_mm.end_data = (unsigned long) _edata; | |
360 | init_mm.brk = (unsigned long) _end; | |
361 | ||
362 | code_resource.start = virt_to_phys(_text); | |
363 | code_resource.end = virt_to_phys(_etext)-1; | |
364 | data_resource.start = virt_to_phys(_etext); | |
365 | data_resource.end = virt_to_phys(_edata)-1; | |
3d83984e MD |
366 | bss_resource.start = virt_to_phys(__bss_start); |
367 | bss_resource.end = virt_to_phys(_ebss)-1; | |
01066625 | 368 | |
d02b08f6 | 369 | memory_start = (unsigned long)__va(__MEMORY_START); |
7e5186ea PM |
370 | if (!memory_end) |
371 | memory_end = memory_start + __MEMORY_SIZE; | |
9655ad03 | 372 | |
ba36197c PM |
373 | #ifdef CONFIG_CMDLINE_BOOL |
374 | strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line)); | |
375 | #else | |
376 | strlcpy(command_line, COMMAND_LINE, sizeof(command_line)); | |
377 | #endif | |
9655ad03 | 378 | |
ba36197c PM |
379 | /* Save unparsed command line copy for /proc/cmdline */ |
380 | memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); | |
9655ad03 PM |
381 | *cmdline_p = command_line; |
382 | ||
01066625 PM |
383 | parse_early_param(); |
384 | ||
9655ad03 | 385 | sh_mv_setup(); |
01066625 PM |
386 | |
387 | /* | |
388 | * Find the highest page frame number we have available | |
389 | */ | |
390 | max_pfn = PFN_DOWN(__pa(memory_end)); | |
391 | ||
392 | /* | |
393 | * Determine low and high memory ranges: | |
394 | */ | |
395 | max_low_pfn = max_pfn; | |
396 | min_low_pfn = __MEMORY_START >> PAGE_SHIFT; | |
397 | ||
398 | nodes_clear(node_online_map); | |
dfbb9042 PM |
399 | |
400 | /* Setup bootmem with available RAM */ | |
01066625 | 401 | setup_memory(); |
01066625 | 402 | sparse_init(); |
1da177e4 LT |
403 | |
404 | #ifdef CONFIG_DUMMY_CONSOLE | |
405 | conswitchp = &dummy_con; | |
406 | #endif | |
407 | ||
408 | /* Perform the machine specific initialisation */ | |
2c7834a6 PM |
409 | if (likely(sh_mv.mv_setup)) |
410 | sh_mv.mv_setup(cmdline_p); | |
1da177e4 | 411 | |
dfbb9042 | 412 | paging_init(); |
0016a126 PM |
413 | |
414 | #ifdef CONFIG_SMP | |
415 | plat_smp_setup(); | |
416 | #endif | |
dfbb9042 | 417 | } |
1da177e4 | 418 | |
1da177e4 | 419 | static const char *cpu_name[] = { |
2825999e | 420 | [CPU_SH7201] = "SH7201", |
a8f67f4b | 421 | [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263", |
b552c7e8 | 422 | [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619", |
e5723e0e PM |
423 | [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706", |
424 | [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708", | |
425 | [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710", | |
3ea6bc3d | 426 | [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720", |
31a49c4b YS |
427 | [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729", |
428 | [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S", | |
429 | [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751", | |
430 | [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760", | |
e5723e0e | 431 | [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501", |
7d740a06 YS |
432 | [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770", |
433 | [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781", | |
434 | [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785", | |
55ba99eb | 435 | [CPU_SH7786] = "SH7786", |
7d740a06 | 436 | [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3", |
c2672f62 | 437 | [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103", |
178dd0cd | 438 | [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723", |
9109a30e | 439 | [CPU_SH7366] = "SH7366", [CPU_SH_NONE] = "Unknown" |
1da177e4 LT |
440 | }; |
441 | ||
11c19656 | 442 | const char *get_cpu_subtype(struct sh_cpuinfo *c) |
1da177e4 | 443 | { |
11c19656 | 444 | return cpu_name[c->type]; |
1da177e4 | 445 | } |
b19a33ca | 446 | EXPORT_SYMBOL(get_cpu_subtype); |
1da177e4 LT |
447 | |
448 | #ifdef CONFIG_PROC_FS | |
2220d164 | 449 | /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */ |
1da177e4 | 450 | static const char *cpu_flags[] = { |
2220d164 | 451 | "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr", |
8263a67e | 452 | "ptea", "llsc", "l2", "op32", "pteaex", NULL |
1da177e4 LT |
453 | }; |
454 | ||
11c19656 | 455 | static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c) |
1da177e4 LT |
456 | { |
457 | unsigned long i; | |
458 | ||
459 | seq_printf(m, "cpu flags\t:"); | |
460 | ||
11c19656 | 461 | if (!c->flags) { |
1da177e4 LT |
462 | seq_printf(m, " %s\n", cpu_flags[0]); |
463 | return; | |
464 | } | |
465 | ||
de02797a | 466 | for (i = 0; cpu_flags[i]; i++) |
11c19656 | 467 | if ((c->flags & (1 << i))) |
1da177e4 LT |
468 | seq_printf(m, " %s", cpu_flags[i+1]); |
469 | ||
470 | seq_printf(m, "\n"); | |
471 | } | |
472 | ||
2c7834a6 PM |
473 | static void show_cacheinfo(struct seq_file *m, const char *type, |
474 | struct cache_info info) | |
1da177e4 LT |
475 | { |
476 | unsigned int cache_size; | |
477 | ||
478 | cache_size = info.ways * info.sets * info.linesz; | |
479 | ||
de02797a PM |
480 | seq_printf(m, "%s size\t: %2dKiB (%d-way)\n", |
481 | type, cache_size >> 10, info.ways); | |
1da177e4 LT |
482 | } |
483 | ||
484 | /* | |
485 | * Get CPU information for use by the procfs. | |
486 | */ | |
487 | static int show_cpuinfo(struct seq_file *m, void *v) | |
488 | { | |
11c19656 PM |
489 | struct sh_cpuinfo *c = v; |
490 | unsigned int cpu = c - cpu_data; | |
491 | ||
492 | if (!cpu_online(cpu)) | |
493 | return 0; | |
1da177e4 | 494 | |
11c19656 | 495 | if (cpu == 0) |
1da177e4 LT |
496 | seq_printf(m, "machine\t\t: %s\n", get_system_type()); |
497 | ||
498 | seq_printf(m, "processor\t: %d\n", cpu); | |
96b644bd | 499 | seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); |
11c19656 | 500 | seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c)); |
3611ee7a SM |
501 | if (c->cut_major == -1) |
502 | seq_printf(m, "cut\t\t: unknown\n"); | |
503 | else if (c->cut_minor == -1) | |
504 | seq_printf(m, "cut\t\t: %d.x\n", c->cut_major); | |
505 | else | |
506 | seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor); | |
1da177e4 | 507 | |
11c19656 | 508 | show_cpuflags(m, c); |
1da177e4 LT |
509 | |
510 | seq_printf(m, "cache type\t: "); | |
511 | ||
512 | /* | |
513 | * Check for what type of cache we have, we support both the | |
514 | * unified cache on the SH-2 and SH-3, as well as the harvard | |
515 | * style cache on the SH-4. | |
516 | */ | |
11c19656 | 517 | if (c->icache.flags & SH_CACHE_COMBINED) { |
1da177e4 | 518 | seq_printf(m, "unified\n"); |
11c19656 | 519 | show_cacheinfo(m, "cache", c->icache); |
1da177e4 LT |
520 | } else { |
521 | seq_printf(m, "split (harvard)\n"); | |
11c19656 PM |
522 | show_cacheinfo(m, "icache", c->icache); |
523 | show_cacheinfo(m, "dcache", c->dcache); | |
1da177e4 LT |
524 | } |
525 | ||
72c35543 | 526 | /* Optional secondary cache */ |
11c19656 PM |
527 | if (c->flags & CPU_HAS_L2_CACHE) |
528 | show_cacheinfo(m, "scache", c->scache); | |
72c35543 | 529 | |
1da177e4 | 530 | seq_printf(m, "bogomips\t: %lu.%02lu\n", |
11c19656 PM |
531 | c->loops_per_jiffy/(500000/HZ), |
532 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
1da177e4 | 533 | |
db62e5bd | 534 | return 0; |
1da177e4 LT |
535 | } |
536 | ||
1da177e4 LT |
537 | static void *c_start(struct seq_file *m, loff_t *pos) |
538 | { | |
539 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; | |
540 | } | |
541 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
542 | { | |
543 | ++*pos; | |
544 | return c_start(m, pos); | |
545 | } | |
546 | static void c_stop(struct seq_file *m, void *v) | |
547 | { | |
548 | } | |
773c7bd6 | 549 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
550 | .start = c_start, |
551 | .next = c_next, | |
552 | .stop = c_stop, | |
553 | .show = show_cpuinfo, | |
554 | }; | |
555 | #endif /* CONFIG_PROC_FS */ | |
b9e393c2 PM |
556 | |
557 | struct dentry *sh_debugfs_root; | |
558 | ||
559 | static int __init sh_debugfs_init(void) | |
560 | { | |
561 | sh_debugfs_root = debugfs_create_dir("sh", NULL); | |
9986b311 Z |
562 | if (!sh_debugfs_root) |
563 | return -ENOMEM; | |
b9e393c2 PM |
564 | if (IS_ERR(sh_debugfs_root)) |
565 | return PTR_ERR(sh_debugfs_root); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | arch_initcall(sh_debugfs_init); |