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> | |
87a00dc0 | 32 | #include <linux/platform_device.h> |
c601a51a | 33 | #include <linux/lmb.h> |
1da177e4 LT |
34 | #include <asm/uaccess.h> |
35 | #include <asm/io.h> | |
7a302a96 | 36 | #include <asm/page.h> |
cd01204b | 37 | #include <asm/elf.h> |
1da177e4 LT |
38 | #include <asm/sections.h> |
39 | #include <asm/irq.h> | |
40 | #include <asm/setup.h> | |
de02797a | 41 | #include <asm/clock.h> |
01066625 | 42 | #include <asm/mmu_context.h> |
1da177e4 | 43 | |
1da177e4 LT |
44 | /* |
45 | * Initialize loops_per_jiffy as 10000000 (1000MIPS). | |
46 | * This value will be used at the very early stage of serial setup. | |
47 | * The bigger value means no problem. | |
48 | */ | |
2d4a73d5 PM |
49 | struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = { |
50 | [0] = { | |
51 | .type = CPU_SH_NONE, | |
52 | .loops_per_jiffy = 10000000, | |
53 | }, | |
54 | }; | |
55 | EXPORT_SYMBOL(cpu_data); | |
82f81f47 PM |
56 | |
57 | /* | |
58 | * The machine vector. First entry in .machvec.init, or clobbered by | |
59 | * sh_mv= on the command line, prior to .machvec.init teardown. | |
60 | */ | |
fd8f20e8 | 61 | struct sh_machine_vector sh_mv = { .mv_name = "generic", }; |
971ac16d | 62 | EXPORT_SYMBOL(sh_mv); |
82f81f47 | 63 | |
2c7834a6 | 64 | #ifdef CONFIG_VT |
1da177e4 | 65 | struct screen_info screen_info; |
2c7834a6 | 66 | #endif |
1da177e4 | 67 | |
1da177e4 LT |
68 | extern int root_mountflags; |
69 | ||
65463b73 | 70 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 71 | #define RAMDISK_PROMPT_FLAG 0x8000 |
65463b73 | 72 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 73 | |
53c82622 | 74 | static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, }; |
1da177e4 | 75 | |
69d1ef4c PM |
76 | static struct resource code_resource = { |
77 | .name = "Kernel code", | |
78 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
79 | }; | |
80 | ||
81 | static struct resource data_resource = { | |
82 | .name = "Kernel data", | |
83 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
84 | }; | |
1da177e4 | 85 | |
3d83984e MD |
86 | static struct resource bss_resource = { |
87 | .name = "Kernel bss", | |
88 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM, | |
89 | }; | |
90 | ||
98d877c4 PM |
91 | unsigned long memory_start; |
92 | EXPORT_SYMBOL(memory_start); | |
7e5186ea | 93 | unsigned long memory_end = 0; |
98d877c4 | 94 | EXPORT_SYMBOL(memory_end); |
1da177e4 | 95 | |
0146ba78 MD |
96 | static struct resource mem_resources[MAX_NUMNODES]; |
97 | ||
cd01204b PM |
98 | int l1i_cache_shape, l1d_cache_shape, l2_cache_shape; |
99 | ||
9655ad03 | 100 | static int __init early_parse_mem(char *p) |
1da177e4 | 101 | { |
9655ad03 | 102 | unsigned long size; |
1da177e4 | 103 | |
d02b08f6 | 104 | memory_start = (unsigned long)__va(__MEMORY_START); |
9655ad03 | 105 | size = memparse(p, &p); |
80a68a43 SM |
106 | |
107 | if (size > __MEMORY_SIZE) { | |
0bd4781d | 108 | printk(KERN_ERR |
80a68a43 SM |
109 | "Using mem= to increase the size of kernel memory " |
110 | "is not allowed.\n" | |
111 | " Recompile the kernel with the correct value for " | |
0bd4781d | 112 | "CONFIG_MEMORY_SIZE.\n"); |
80a68a43 SM |
113 | return 0; |
114 | } | |
115 | ||
9655ad03 | 116 | memory_end = memory_start + size; |
2c7834a6 | 117 | |
1da177e4 LT |
118 | return 0; |
119 | } | |
9655ad03 | 120 | early_param("mem", early_parse_mem); |
1da177e4 | 121 | |
01066625 PM |
122 | /* |
123 | * Register fully available low RAM pages with the bootmem allocator. | |
124 | */ | |
125 | static void __init register_bootmem_low_pages(void) | |
1da177e4 | 126 | { |
01066625 | 127 | unsigned long curr_pfn, last_pfn, pages; |
b641fe01 | 128 | |
1da177e4 | 129 | /* |
01066625 | 130 | * We are rounding up the start address of usable memory: |
1da177e4 | 131 | */ |
01066625 | 132 | curr_pfn = PFN_UP(__MEMORY_START); |
1da177e4 LT |
133 | |
134 | /* | |
01066625 | 135 | * ... and at the end of the usable range downwards: |
1da177e4 | 136 | */ |
01066625 | 137 | last_pfn = PFN_DOWN(__pa(memory_end)); |
1da177e4 | 138 | |
01066625 PM |
139 | if (last_pfn > max_low_pfn) |
140 | last_pfn = max_low_pfn; | |
141 | ||
142 | pages = last_pfn - curr_pfn; | |
143 | free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages)); | |
144 | } | |
145 | ||
7d7712a3 BW |
146 | #ifdef CONFIG_KEXEC |
147 | static void __init reserve_crashkernel(void) | |
148 | { | |
149 | unsigned long long free_mem; | |
150 | unsigned long long crash_size, crash_base; | |
4aeaa223 | 151 | void *vp; |
7d7712a3 BW |
152 | int ret; |
153 | ||
154 | free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; | |
155 | ||
156 | ret = parse_crashkernel(boot_command_line, free_mem, | |
157 | &crash_size, &crash_base); | |
158 | if (ret == 0 && crash_size) { | |
18a01a3b | 159 | if (crash_base <= 0) { |
7b551f9d | 160 | vp = alloc_bootmem_nopanic(crash_size); |
4aeaa223 MD |
161 | if (!vp) { |
162 | printk(KERN_INFO "crashkernel allocation " | |
163 | "failed\n"); | |
164 | return; | |
165 | } | |
166 | crash_base = __pa(vp); | |
167 | } else if (reserve_bootmem(crash_base, crash_size, | |
18a01a3b BW |
168 | BOOTMEM_EXCLUSIVE) < 0) { |
169 | printk(KERN_INFO "crashkernel reservation failed - " | |
170 | "memory is in use\n"); | |
171 | return; | |
172 | } | |
173 | ||
174 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " | |
175 | "for crashkernel (System RAM: %ldMB)\n", | |
176 | (unsigned long)(crash_size >> 20), | |
177 | (unsigned long)(crash_base >> 20), | |
178 | (unsigned long)(free_mem >> 20)); | |
179 | crashk_res.start = crash_base; | |
180 | crashk_res.end = crash_base + crash_size - 1; | |
34894c78 | 181 | insert_resource(&iomem_resource, &crashk_res); |
7d7712a3 BW |
182 | } |
183 | } | |
184 | #else | |
185 | static inline void __init reserve_crashkernel(void) | |
186 | {} | |
187 | #endif | |
188 | ||
cf204fa7 PM |
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 | } | |
cf204fa7 | 204 | |
0146ba78 MD |
205 | void __init __add_active_range(unsigned int nid, unsigned long start_pfn, |
206 | unsigned long end_pfn) | |
207 | { | |
208 | struct resource *res = &mem_resources[nid]; | |
209 | ||
210 | WARN_ON(res->name); /* max one active range per node for now */ | |
211 | ||
212 | res->name = "System RAM"; | |
213 | res->start = start_pfn << PAGE_SHIFT; | |
214 | res->end = (end_pfn << PAGE_SHIFT) - 1; | |
215 | res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
216 | if (request_resource(&iomem_resource, res)) { | |
217 | pr_err("unable to request memory_resource 0x%lx 0x%lx\n", | |
218 | start_pfn, end_pfn); | |
219 | return; | |
220 | } | |
221 | ||
222 | /* | |
223 | * We don't know which RAM region contains kernel data, | |
224 | * so we try it repeatedly and let the resource manager | |
225 | * test it. | |
226 | */ | |
227 | request_resource(res, &code_resource); | |
228 | request_resource(res, &data_resource); | |
229 | request_resource(res, &bss_resource); | |
230 | ||
0146ba78 MD |
231 | add_active_range(nid, start_pfn, end_pfn); |
232 | } | |
233 | ||
2826fa61 | 234 | void __init setup_bootmem_allocator(unsigned long free_pfn) |
01066625 PM |
235 | { |
236 | unsigned long bootmap_size; | |
c601a51a MF |
237 | unsigned long bootmap_pages, bootmem_paddr; |
238 | u64 total_pages = (lmb_end_of_DRAM() - __MEMORY_START) >> PAGE_SHIFT; | |
239 | int i; | |
240 | ||
241 | bootmap_pages = bootmem_bootmap_pages(total_pages); | |
242 | ||
243 | bootmem_paddr = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE); | |
1da177e4 LT |
244 | |
245 | /* | |
246 | * Find a proper area for the bootmem bitmap. After this | |
247 | * bootstrap step all allocations (until the page allocator | |
248 | * is intact) must be done via bootmem_alloc(). | |
249 | */ | |
c601a51a MF |
250 | bootmap_size = init_bootmem_node(NODE_DATA(0), |
251 | bootmem_paddr >> PAGE_SHIFT, | |
01066625 | 252 | min_low_pfn, max_low_pfn); |
1da177e4 | 253 | |
c601a51a MF |
254 | /* Add active regions with valid PFNs. */ |
255 | for (i = 0; i < lmb.memory.cnt; i++) { | |
256 | unsigned long start_pfn, end_pfn; | |
257 | start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT; | |
258 | end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i); | |
259 | __add_active_range(0, start_pfn, end_pfn); | |
260 | } | |
b641fe01 | 261 | |
1da177e4 | 262 | /* |
c601a51a MF |
263 | * Add all physical memory to the bootmem map and mark each |
264 | * area as present. | |
1da177e4 | 265 | */ |
c601a51a | 266 | register_bootmem_low_pages(); |
1da177e4 | 267 | |
c601a51a MF |
268 | /* Reserve the sections we're already using. */ |
269 | for (i = 0; i < lmb.reserved.cnt; i++) | |
270 | reserve_bootmem(lmb.reserved.region[i].base, | |
271 | lmb_size_bytes(&lmb.reserved, i), | |
48865163 | 272 | BOOTMEM_DEFAULT); |
1da177e4 | 273 | |
c601a51a MF |
274 | node_set_online(0); |
275 | ||
2826fa61 PM |
276 | sparse_memory_present_with_active_regions(0); |
277 | ||
1da177e4 | 278 | #ifdef CONFIG_BLK_DEV_INITRD |
3f9654f0 | 279 | ROOT_DEV = Root_RAM0; |
1da177e4 LT |
280 | |
281 | if (LOADER_TYPE && INITRD_START) { | |
28d6e52c SM |
282 | unsigned long initrd_start_phys = INITRD_START + __MEMORY_START; |
283 | ||
284 | if (initrd_start_phys + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) { | |
285 | reserve_bootmem(initrd_start_phys, INITRD_SIZE, | |
286 | BOOTMEM_DEFAULT); | |
287 | initrd_start = (unsigned long)__va(initrd_start_phys); | |
1da177e4 LT |
288 | initrd_end = initrd_start + INITRD_SIZE; |
289 | } else { | |
290 | printk("initrd extends beyond end of memory " | |
28d6e52c SM |
291 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", |
292 | initrd_start_phys + INITRD_SIZE, | |
9a19eb2a | 293 | (unsigned long)PFN_PHYS(max_low_pfn)); |
1da177e4 LT |
294 | initrd_start = 0; |
295 | } | |
296 | } | |
297 | #endif | |
7d7712a3 BW |
298 | |
299 | reserve_crashkernel(); | |
01066625 PM |
300 | } |
301 | ||
302 | #ifndef CONFIG_NEED_MULTIPLE_NODES | |
303 | static void __init setup_memory(void) | |
304 | { | |
305 | unsigned long start_pfn; | |
c601a51a MF |
306 | u64 base = min_low_pfn << PAGE_SHIFT; |
307 | u64 size = (max_low_pfn << PAGE_SHIFT) - base; | |
01066625 PM |
308 | |
309 | /* | |
310 | * Partially used pages are not usable - thus | |
311 | * we are rounding upwards: | |
312 | */ | |
313 | start_pfn = PFN_UP(__pa(_end)); | |
c601a51a MF |
314 | |
315 | lmb_add(base, size); | |
316 | ||
317 | /* | |
318 | * Reserve the kernel text and | |
319 | * Reserve the bootmem bitmap. We do this in two steps (first step | |
320 | * was init_bootmem()), because this catches the (definitely buggy) | |
321 | * case of us accidentally initializing the bootmem allocator with | |
322 | * an invalid RAM area. | |
323 | */ | |
324 | lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET, | |
325 | (PFN_PHYS(start_pfn) + PAGE_SIZE - 1) - | |
326 | (__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET)); | |
327 | ||
328 | /* | |
329 | * Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET. | |
330 | */ | |
331 | if (CONFIG_ZERO_PAGE_OFFSET != 0) | |
332 | lmb_reserve(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET); | |
333 | ||
334 | lmb_analyze(); | |
335 | lmb_dump_all(); | |
336 | ||
01066625 PM |
337 | setup_bootmem_allocator(start_pfn); |
338 | } | |
339 | #else | |
340 | extern void __init setup_memory(void); | |
341 | #endif | |
342 | ||
daf423db SH |
343 | /* |
344 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by | |
345 | * is_kdump_kernel() to determine if we are booting after a panic. Hence | |
346 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. | |
347 | */ | |
348 | #ifdef CONFIG_CRASH_DUMP | |
349 | /* elfcorehdr= specifies the location of elf core header | |
350 | * stored by the crashed kernel. | |
351 | */ | |
352 | static int __init parse_elfcorehdr(char *arg) | |
353 | { | |
354 | if (!arg) | |
355 | return -EINVAL; | |
356 | elfcorehdr_addr = memparse(arg, &arg); | |
357 | return 0; | |
358 | } | |
359 | early_param("elfcorehdr", parse_elfcorehdr); | |
360 | #endif | |
361 | ||
87a00dc0 MD |
362 | void __init __attribute__ ((weak)) plat_early_device_setup(void) |
363 | { | |
364 | } | |
365 | ||
01066625 PM |
366 | void __init setup_arch(char **cmdline_p) |
367 | { | |
368 | enable_mmu(); | |
369 | ||
01066625 PM |
370 | ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); |
371 | ||
0105346c PM |
372 | printk(KERN_NOTICE "Boot params:\n" |
373 | "... MOUNT_ROOT_RDONLY - %08lx\n" | |
374 | "... RAMDISK_FLAGS - %08lx\n" | |
375 | "... ORIG_ROOT_DEV - %08lx\n" | |
376 | "... LOADER_TYPE - %08lx\n" | |
377 | "... INITRD_START - %08lx\n" | |
378 | "... INITRD_SIZE - %08lx\n", | |
379 | MOUNT_ROOT_RDONLY, RAMDISK_FLAGS, | |
380 | ORIG_ROOT_DEV, LOADER_TYPE, | |
381 | INITRD_START, INITRD_SIZE); | |
382 | ||
01066625 PM |
383 | #ifdef CONFIG_BLK_DEV_RAM |
384 | rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; | |
385 | rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); | |
386 | rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); | |
387 | #endif | |
388 | ||
389 | if (!MOUNT_ROOT_RDONLY) | |
390 | root_mountflags &= ~MS_RDONLY; | |
391 | init_mm.start_code = (unsigned long) _text; | |
392 | init_mm.end_code = (unsigned long) _etext; | |
393 | init_mm.end_data = (unsigned long) _edata; | |
394 | init_mm.brk = (unsigned long) _end; | |
395 | ||
396 | code_resource.start = virt_to_phys(_text); | |
397 | code_resource.end = virt_to_phys(_etext)-1; | |
398 | data_resource.start = virt_to_phys(_etext); | |
399 | data_resource.end = virt_to_phys(_edata)-1; | |
3d83984e MD |
400 | bss_resource.start = virt_to_phys(__bss_start); |
401 | bss_resource.end = virt_to_phys(_ebss)-1; | |
01066625 | 402 | |
d02b08f6 | 403 | memory_start = (unsigned long)__va(__MEMORY_START); |
7e5186ea PM |
404 | if (!memory_end) |
405 | memory_end = memory_start + __MEMORY_SIZE; | |
9655ad03 | 406 | |
ba36197c PM |
407 | #ifdef CONFIG_CMDLINE_BOOL |
408 | strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line)); | |
409 | #else | |
410 | strlcpy(command_line, COMMAND_LINE, sizeof(command_line)); | |
411 | #endif | |
9655ad03 | 412 | |
ba36197c PM |
413 | /* Save unparsed command line copy for /proc/cmdline */ |
414 | memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); | |
9655ad03 PM |
415 | *cmdline_p = command_line; |
416 | ||
01066625 PM |
417 | parse_early_param(); |
418 | ||
87a00dc0 MD |
419 | plat_early_device_setup(); |
420 | ||
9655ad03 | 421 | sh_mv_setup(); |
01066625 PM |
422 | |
423 | /* | |
424 | * Find the highest page frame number we have available | |
425 | */ | |
426 | max_pfn = PFN_DOWN(__pa(memory_end)); | |
427 | ||
428 | /* | |
429 | * Determine low and high memory ranges: | |
430 | */ | |
431 | max_low_pfn = max_pfn; | |
432 | min_low_pfn = __MEMORY_START >> PAGE_SHIFT; | |
433 | ||
434 | nodes_clear(node_online_map); | |
dfbb9042 PM |
435 | |
436 | /* Setup bootmem with available RAM */ | |
c601a51a | 437 | lmb_init(); |
01066625 | 438 | setup_memory(); |
01066625 | 439 | sparse_init(); |
1da177e4 LT |
440 | |
441 | #ifdef CONFIG_DUMMY_CONSOLE | |
442 | conswitchp = &dummy_con; | |
443 | #endif | |
444 | ||
445 | /* Perform the machine specific initialisation */ | |
2c7834a6 PM |
446 | if (likely(sh_mv.mv_setup)) |
447 | sh_mv.mv_setup(cmdline_p); | |
1da177e4 | 448 | |
dfbb9042 | 449 | paging_init(); |
0016a126 PM |
450 | |
451 | #ifdef CONFIG_SMP | |
452 | plat_smp_setup(); | |
453 | #endif | |
dfbb9042 | 454 | } |
1da177e4 | 455 | |
eb9b9b56 MD |
456 | /* processor boot mode configuration */ |
457 | int generic_mode_pins(void) | |
458 | { | |
459 | pr_warning("generic_mode_pins(): missing mode pin configuration\n"); | |
460 | return 0; | |
461 | } | |
462 | ||
463 | int test_mode_pin(int pin) | |
464 | { | |
0d4fdbb6 | 465 | return sh_mv.mv_mode_pins() & pin; |
eb9b9b56 MD |
466 | } |
467 | ||
1da177e4 | 468 | static const char *cpu_name[] = { |
2825999e | 469 | [CPU_SH7201] = "SH7201", |
a8f67f4b | 470 | [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263", |
b552c7e8 | 471 | [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619", |
e5723e0e PM |
472 | [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706", |
473 | [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708", | |
474 | [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710", | |
3ea6bc3d | 475 | [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720", |
31a49c4b YS |
476 | [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729", |
477 | [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S", | |
478 | [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751", | |
479 | [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760", | |
e5723e0e | 480 | [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501", |
7d740a06 YS |
481 | [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770", |
482 | [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781", | |
483 | [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785", | |
c01f0f1a | 484 | [CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757", |
7d740a06 | 485 | [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3", |
c2672f62 | 486 | [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103", |
178dd0cd | 487 | [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723", |
0207a2ef KM |
488 | [CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724", |
489 | [CPU_SH_NONE] = "Unknown" | |
1da177e4 LT |
490 | }; |
491 | ||
11c19656 | 492 | const char *get_cpu_subtype(struct sh_cpuinfo *c) |
1da177e4 | 493 | { |
11c19656 | 494 | return cpu_name[c->type]; |
1da177e4 | 495 | } |
b19a33ca | 496 | EXPORT_SYMBOL(get_cpu_subtype); |
1da177e4 LT |
497 | |
498 | #ifdef CONFIG_PROC_FS | |
2220d164 | 499 | /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */ |
1da177e4 | 500 | static const char *cpu_flags[] = { |
2220d164 | 501 | "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr", |
8263a67e | 502 | "ptea", "llsc", "l2", "op32", "pteaex", NULL |
1da177e4 LT |
503 | }; |
504 | ||
11c19656 | 505 | static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c) |
1da177e4 LT |
506 | { |
507 | unsigned long i; | |
508 | ||
509 | seq_printf(m, "cpu flags\t:"); | |
510 | ||
11c19656 | 511 | if (!c->flags) { |
1da177e4 LT |
512 | seq_printf(m, " %s\n", cpu_flags[0]); |
513 | return; | |
514 | } | |
515 | ||
de02797a | 516 | for (i = 0; cpu_flags[i]; i++) |
11c19656 | 517 | if ((c->flags & (1 << i))) |
1da177e4 LT |
518 | seq_printf(m, " %s", cpu_flags[i+1]); |
519 | ||
520 | seq_printf(m, "\n"); | |
521 | } | |
522 | ||
2c7834a6 PM |
523 | static void show_cacheinfo(struct seq_file *m, const char *type, |
524 | struct cache_info info) | |
1da177e4 LT |
525 | { |
526 | unsigned int cache_size; | |
527 | ||
528 | cache_size = info.ways * info.sets * info.linesz; | |
529 | ||
de02797a PM |
530 | seq_printf(m, "%s size\t: %2dKiB (%d-way)\n", |
531 | type, cache_size >> 10, info.ways); | |
1da177e4 LT |
532 | } |
533 | ||
534 | /* | |
535 | * Get CPU information for use by the procfs. | |
536 | */ | |
537 | static int show_cpuinfo(struct seq_file *m, void *v) | |
538 | { | |
11c19656 PM |
539 | struct sh_cpuinfo *c = v; |
540 | unsigned int cpu = c - cpu_data; | |
541 | ||
542 | if (!cpu_online(cpu)) | |
543 | return 0; | |
1da177e4 | 544 | |
11c19656 | 545 | if (cpu == 0) |
1da177e4 LT |
546 | seq_printf(m, "machine\t\t: %s\n", get_system_type()); |
547 | ||
548 | seq_printf(m, "processor\t: %d\n", cpu); | |
96b644bd | 549 | seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); |
11c19656 | 550 | seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c)); |
3611ee7a SM |
551 | if (c->cut_major == -1) |
552 | seq_printf(m, "cut\t\t: unknown\n"); | |
553 | else if (c->cut_minor == -1) | |
554 | seq_printf(m, "cut\t\t: %d.x\n", c->cut_major); | |
555 | else | |
556 | seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor); | |
1da177e4 | 557 | |
11c19656 | 558 | show_cpuflags(m, c); |
1da177e4 LT |
559 | |
560 | seq_printf(m, "cache type\t: "); | |
561 | ||
562 | /* | |
563 | * Check for what type of cache we have, we support both the | |
564 | * unified cache on the SH-2 and SH-3, as well as the harvard | |
565 | * style cache on the SH-4. | |
566 | */ | |
11c19656 | 567 | if (c->icache.flags & SH_CACHE_COMBINED) { |
1da177e4 | 568 | seq_printf(m, "unified\n"); |
11c19656 | 569 | show_cacheinfo(m, "cache", c->icache); |
1da177e4 LT |
570 | } else { |
571 | seq_printf(m, "split (harvard)\n"); | |
11c19656 PM |
572 | show_cacheinfo(m, "icache", c->icache); |
573 | show_cacheinfo(m, "dcache", c->dcache); | |
1da177e4 LT |
574 | } |
575 | ||
72c35543 | 576 | /* Optional secondary cache */ |
11c19656 PM |
577 | if (c->flags & CPU_HAS_L2_CACHE) |
578 | show_cacheinfo(m, "scache", c->scache); | |
72c35543 | 579 | |
1da177e4 | 580 | seq_printf(m, "bogomips\t: %lu.%02lu\n", |
11c19656 PM |
581 | c->loops_per_jiffy/(500000/HZ), |
582 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
1da177e4 | 583 | |
db62e5bd | 584 | return 0; |
1da177e4 LT |
585 | } |
586 | ||
1da177e4 LT |
587 | static void *c_start(struct seq_file *m, loff_t *pos) |
588 | { | |
589 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; | |
590 | } | |
591 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
592 | { | |
593 | ++*pos; | |
594 | return c_start(m, pos); | |
595 | } | |
596 | static void c_stop(struct seq_file *m, void *v) | |
597 | { | |
598 | } | |
773c7bd6 | 599 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
600 | .start = c_start, |
601 | .next = c_next, | |
602 | .stop = c_stop, | |
603 | .show = show_cpuinfo, | |
604 | }; | |
605 | #endif /* CONFIG_PROC_FS */ | |
b9e393c2 PM |
606 | |
607 | struct dentry *sh_debugfs_root; | |
608 | ||
609 | static int __init sh_debugfs_init(void) | |
610 | { | |
611 | sh_debugfs_root = debugfs_create_dir("sh", NULL); | |
9986b311 Z |
612 | if (!sh_debugfs_root) |
613 | return -ENOMEM; | |
b9e393c2 PM |
614 | if (IS_ERR(sh_debugfs_root)) |
615 | return PTR_ERR(sh_debugfs_root); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | arch_initcall(sh_debugfs_init); |